Add --allow-releaseinfo-change to the first main apt-get update because ppa:ondrej/php changed its Label

I got:

```
Updating system packages...

FAILED: apt-get update
-----------------------------------------
Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:3 http://archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:5 https://ppa.launchpadcontent.net/duplicity-team/duplicity-release-git/ubuntu jammy InRelease
Get:6 https://ppa.launchpadcontent.net/ondrej/php/ubuntu jammy InRelease [24.6 kB]
Reading package lists...
E: Repository 'https://ppa.launchpadcontent.net/ondrej/php/ubuntu jammy InRelease' changed its 'Label' value from '***** The main PPA for supported PHP versions with many PECL extensions *****' to 'PPA for PHP'
```

.gitignore

@@ -5,4 +5,5 @@ tools/__pycache__/
 externals/
 .env
 .vagrant
-api/docs/api-docs.html
+api/docs/api-docs.html
+*.code-workspace

CHANGELOG.md

@@ -1,6 +1,284 @@
 CHANGELOG
 =========
 
+Version 72 (June 3, 2025)
+-------------------------
+
+Upgrades
+
+* Roundcube upgraded to version 1.6.11, fixing a security vulnerability.
+
+Control Panel
+
+* A warning during daily tasks related to no TLS certificates being expired is fixed.
+
+Version 71 (January 4, 2025)
+----------------------------
+
+(Version 71a was posted on January 6, 2025 and fixes a setup regression.)
+
+Upgrades
+
+* Roundcube upgraded to version 1.6.9.
+* Z-Push upgraded to version 2.7.5.
+
+Automated Maintenance
+
+* Daily automated tasks are now run at 1am in the box's timezone and full backups are now restricted to running only on Saturdays and Sundays at that time.
+* Backups now exclude the owncloud-backup folder so that we're not backing up backups.
+* Old TLS certificates are now automatically deleted to improve control panel performance.
+
+Setup
+
+* Fixed broken setup if SSH was configured to listen on multiple ports.
+* Ubuntu MOTD advertisements are now disabled.
+* Fixed missing Roundcube dependency package if NextCloud isn't installed.
+
+Control Panel
+
+* Improved status checks for secondary nameservers.
+* Spamhaus is now queried for the box's IPv6 address also.
+* DSA and EC private keys are now accepted for TLS certificates.
+* Timeouts for loading slow control panel pages are reduced.
+
+And other minor fixes.
+
+Version 70 (August 15, 2024)
+----------------------------
+
+* Roundcube is updated to version 1.6.8 fixing security vulnerabilities.
+
+Version 69 (July 20, 2024)
+--------------------------
+
+Package updates:
+
+* Nextcloud is updated to 26.0.13.
+* Z-Push is updated to 2.7.3.
+
+Other updates:
+
+* Fixed an error generating the weekly statistics.
+* Fixed file permissions when setting up Nextcloud.
+* Added an undocumented option to proxy websockets.
+* Internal improvements to the code to make it more reliable and readable.
+
+Version 69a (July 21, 2024) and 69b (July 23, 2024) correct setup failures.
+
+Version 68 (April 1, 2024)
+--------------------------
+
+Package updates:
+
+* Roundcube updated to version 1.6.6.
+* Nextcloud is updated to version 26.0.12.
+
+Mail:
+
+* Updated postfix's configuration to guard against SMTP smuggling to the long-term fix (https://www.postfix.org/smtp-smuggling.html).
+
+Control Panel:
+
+* Improved reporting of Spamhaus response codes.
+* Improved detection of SSH port.
+* Fixed an error if last saved status check results were corrupted.
+* Other minor fixes.
+
+Other:
+
+* fail2ban is updated to see "HTTP/2.0" requests to munin also.
+* Internal improvements to the code to make it more reliable and readable.
+
+Version 67 (December 22, 2023)
+------------------------------
+
+* Guard against a newly published vulnerability called SMTP Smuggling. See https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/.
+
+Version 66 (December 17, 2023)
+------------------------------
+
+* Some users reported an error installing Mail-in-a-Box related to the virtualenv command. This is hopefully fixed.
+* Roundcube is updated to 1.6.5 fixing a security vulnerability.
+* For Mail-in-a-Box developers, a new setup variable is added to pull the source code from a different repository.
+
+Version 65 (October 27, 2023)
+-----------------------------
+
+* Roundcube updated to 1.6.4 fixing a security vulnerability.
+* zpush.sh updated to version 2.7.1.
+* Fixed a typo in the control panel.
+
+Version 64 (September 2, 2023)
+------------------------------
+
+* Fixed broken installation when upgrading from Mail-in-a-Box version 56 (Nextcloud 22) and earlier because of an upstream packaging issue.
+* Fixed backups to work with the latest duplicity package which was not backwards compatible.
+* Fixed setting B2 as a backup target with a slash in the application key.
+* Turned off OpenDMARC diagnostic reports sent in response to incoming mail.
+* Fixed some crashes when using an unreleased version of Mail-in-a-Box.
+* Added z-push administration scripts.
+
+Version 63 (July 27, 2023)
+--------------------------
+
+* Nextcloud updated to 25.0.7.
+
+Version 62 (May 20, 2023)
+-------------------------
+
+Package updates:
+
+* Nextcloud updated to 23.0.12 (and its apps also updated).
+* Roundcube updated to 1.6.1.
+* Z-Push to 2.7.0, which has compatibility for Ubuntu 22.04, so it works again.
+
+Mail:
+
+* Roundcube's password change page is now working again.
+
+Control panel:
+
+* Allow setting the backup location's S3 region name for non-AWS S3-compatible backup hosts.
+* Control panel pages can be opened in a new tab/window and bookmarked and browser history navigation now works.
+* Add a Copy button to put the rsync backup public key on clipboard.
+* Allow secondary DNS xfr: items added in the control panel to be hostnames too.
+* Fixed issue where sshkeygen fails when IPv6 is disabled.
+* Fixed issue opening munin reports.
+* Fixed report formatting in status emails sent to the administrator.
+
+Version 61.1 (January 28, 2023)
+-------------------------------
+
+* Fixed rsync backups not working with the default port.
+* Reverted "Improve error messages in the management tools when external command-line tools are run." because of the possibility of user secrets being included in error messages.
+* Fix for TLS certificate SHA fingerprint not being displayed during setup.
+
+Version 61 (January 21, 2023)
+-----------------------------
+
+System:
+
+* fail2ban didn't start after setup.
+
+Mail:
+
+* Disable Roundcube password plugin since it was corrupting the user database.
+
+Control panel:
+
+* Fix changing existing backup settings when the rsync type is used.
+* Allow setting a custom port for rsync backups.
+* Fixes to DNS lookups during status checks when there are timeouts, enforce timeouts better.
+* A new check is added to ensure fail2ban is running.
+* Fixed a color.
+* Improve error messages in the management tools when external command-line tools are run.
+
+Version 60.1 (October 30, 2022)
+-------------------------------
+
+* A setup issue where the DNS server nsd isn't running at the end of setup is (hopefully) fixed.
+* Nextcloud is updated to 23.0.10 (contacts to 4.2.2, calendar to 3.5.1).
+
+Version 60 (October 11, 2022)
+-----------------------------
+
+This is the first release for Ubuntu 22.04.
+
+**Before upgrading**, you must **first upgrade your existing Ubuntu 18.04 box to Mail-in-a-Box v0.51 or later**, if you haven't already done so. That may not be possible after Ubuntu 18.04 reaches its end of life in April 2023, so please complete the upgrade well before then. (If you are not using Nextcloud's contacts or calendar, you can migrate to the latest version of Mail-in-a-Box from any previous version.)
+
+For complete upgrade instructions, see:
+
+https://discourse.mailinabox.email/t/version-60-for-ubuntu-22-04-is-about-to-be-released/9558
+
+No major features of Mail-in-a-Box have changed in this release, although some minor fixes were made.
+
+With the newer version of Ubuntu the following software packages we use are updated:
+
+* dovecot is upgraded to 2.3.16, postfix to 3.6.4, opendmark to 1.4 (which adds ARC-Authentication-Results headers), and spampd to 2.53 (alleviating a mail delivery rate limiting bug).
+* Nextcloud is upgraded to 23.0.4 (contacts to 4.2.0, calendar to 3.5.0).
+* Roundcube is upgraded to 1.6.0.
+* certbot is upgraded to 1.21 (via the Ubuntu repository instead of a PPA).
+* fail2ban is upgraded to 0.11.2.
+* nginx is upgraded to 1.18.
+* PHP is upgraded from 7.2 to 8.0.
+
+Also:
+
+* Roundcube's login session cookie was tightened. Existing sessions may require a manual logout.
+* Moved Postgrey's database under $STORAGE_ROOT.
+
+Version 57a (June 19, 2022)
+---------------------------
+
+* The Backblaze backups fix posted in Version 57 was incomplete. It's now fixed.
+
+Version 57 (June 12, 2022)
+--------------------------
+
+Setup:
+
+* Fixed issue upgrading from Mail-in-a-Box v0.40-v0.50 because of a changed URL that Nextcloud is downloaded from.
+
+Backups:
+
+* Fixed S3 backups which broke with duplicity 0.8.23.
+* Fixed Backblaze backups which broke with latest b2sdk package by rolling back its version.
+
+Control panel:
+
+* Fixed spurious changes in system status checks messages by sorting DNSSEC DS records.
+* Fixed fail2ban lockout over IPv6 from excessive loads of the system status checks.
+* Fixed an incorrect IPv6 system status check message.
+
+Version 56 (January 19, 2022)
+-----------------------------
+
+Software updates:
+
+* Roundcube updated to 1.5.2 (from 1.5.0), and the persistent_login and CardDAV (to 4.3.0 from 3.0.3) plugins are updated.
+* Nextcloud updated to 20.0.14 (from 20.0.8), contacts to 4.0.7 (from 3.5.1), and calendar to 3.0.4 (from 2.2.0).
+
+Setup:
+
+* Fixed failed setup if a previous attempt failed while updating Nextcloud.
+
+Control panel:
+
+* Fixed a crash if a custom DNS entry is not under a zone managed by the box.
+* Fix DNSSEC instructions typo.
+
+Other:
+
+* Set systemd journald log retention to 10 days (from no limit) to reduce disk usage.
+* Fixed log processing for submission lines that have a sasl_sender or other extra information.
+* Fix DNS secondary nameserver refresh failure retry period.
+
+Version 55 (October 18, 2021)
+-----------------------------
+
+Mail:
+
+* "SMTPUTF8" is now disabled in Postfix. Because Dovecot still does not support SMTPUTF8, incoming mail to internationalized addresses was bouncing. This fixes incoming mail to internationalized domains (which was probably working prior to v0.40), but it will prevent sending outbound mail to addresses with internationalized local-parts.
+* Upgraded to Roundcube 1.5.
+
+Control panel:
+
+* The control panel menus are now hidden before login, but now non-admins can log in to access the mail and contacts/calendar instruction pages.
+* The login form now disables browser autocomplete in the two-factor authentication code field.
+* After logging in, the default page is now a fast-loading welcome page rather than the slow-loading system status checks page.
+* The backup retention period option now displays for B2 backup targets.
+* The DNSSEC DS record recommendations are cleaned up and now recommend changing records that use SHA1.
+* The Munin monitoring pages no longer require a separate HTTP basic authentication login and can be used if two-factor authentication is turned on.
+* Control panel logins are now tied to a session backend that allows true logouts (rather than an encrypted cookie).
+* Failed logins no longer directly reveal whether the email address corresponds to a user account.
+* Browser dark mode now inverts the color scheme.
+
+Other:
+
+* Fail2ban's IPv6 support is enabled.
+* The mail log tool now doesn't crash if there are email addresses in log messages with invalid UTF-8 characters.
+* Additional nsd.conf files can be placed in /etc/nsd.conf.d.
+
 v0.54 (June 20, 2021)
 ---------------------
 
@@ -31,7 +309,7 @@ Setup:
 v0.53a (May 8, 2021)
 --------------------
 
-The download URL for Z-Push has been revised becaue the old URL stopped working.
+The download URL for Z-Push has been revised because the old URL stopped working.
 
 v0.53 (April 12, 2021)
 ----------------------
@@ -250,7 +528,7 @@ Changes:
 * Added support for S3-compatible backup services besides Amazon S3.
 * Fixed the control panel login page to let LastPass save passwords.
 * Fixed an error in the user privileges API.
-* Silenced some spurrious messages.
+* Silenced some spurious messages.
 
 Software updates:
 
@@ -314,7 +592,7 @@ Setup:
 
 Control Panel:
 
-* The users page now documents that passwords should only have ASCII characters to prevent character encoding mismaches between clients and the server.
+* The users page now documents that passwords should only have ASCII characters to prevent character encoding mismatches between clients and the server.
 * The users page no longer shows user mailbox sizes because this was extremely slow for very large mailboxes.
 * The Mail-in-a-Box version is now shown in the system status checks even when the new-version check is disabled.
 * The alises page now warns that alises should not be used to forward mail off of the box. Mail filters within Roundcube are better for that.
@@ -642,7 +920,7 @@ v0.17c (April 1, 2016)
 
 This update addresses some minor security concerns and some installation issues.
 
-ownCoud:
+ownCloud:
 
 * Block web access to the configuration parameters (config.php). There is no immediate impact (see [#776](https://github.com/mail-in-a-box/mailinabox/pull/776)), although advanced users may want to take note.
 
@@ -658,7 +936,7 @@ Control panel:
 Setup:
 
 * Setup dialogs did not appear correctly when connecting to SSH using Putty on Windows.
-* We now install Roundcube from our own mirror because Sourceforge's downloads experience frequent intermittant unavailability.
+* We now install Roundcube from our own mirror because Sourceforge's downloads experience frequent intermittent unavailability.
 
 v0.17b (March 1, 2016)
 ----------------------
@@ -701,7 +979,7 @@ This update primarily adds automatic SSL (now "TLS") certificate provisioning fr
 
 Control Panel:
 
-* The SSL certificates (now referred to as "TLS ccertificates") page now supports provisioning free certificates from Let's Encrypt.
+* The SSL certificates (now referred to as "TLS certificates") page now supports provisioning free certificates from Let's Encrypt.
 * Report free memory usage.
 * Fix a crash when the git directory is not checked out to a tag.
 * When IPv6 is enabled, check that all domains (besides the system hostname) resolve over IPv6.
@@ -794,7 +1072,7 @@ Control panel:
 System:
 
 * Tweaks to fail2ban settings.
-* Fixed a spurrious warning while installing munin.
+* Fixed a spurious warning while installing munin.
 
 v0.13b (August 30, 2015)
 ------------------------
@@ -808,7 +1086,7 @@ Note: v0.13 (no 'a', August 19, 2015) was pulled immediately due to an ownCloud
 
 Mail:
 
-* Outbound mail headers (the Recieved: header) are tweaked to possibly improve deliverability.
+* Outbound mail headers (the Received: header) are tweaked to possibly improve deliverability.
 * Some MIME messages would hang Roundcube due to a missing package.
 * The users permitted to send as an alias can now be different from where an alias forwards to.
 
@@ -840,7 +1118,7 @@ v0.12c was posted to work around the current Sourceforge.net outage: pyzor's rem
 v0.12b (July 4, 2015)
 ---------------------
 
-This version corrects a minor regression in v0.12 related to creating aliases targetting multiple addresses.
+This version corrects a minor regression in v0.12 related to creating aliases targeting multiple addresses.
 
 v0.12 (July 3, 2015)
 --------------------
@@ -893,7 +1171,7 @@ Control panel:
 
 System:
 * The munin system monitoring tool is now installed and accessible at /admin/munin.
-* ownCloud updated to version 8.0.4. The ownCloud installation step now is reslient to download problems. The ownCloud configuration file is now stored in STORAGE_ROOT to fix loss of data when moving STORAGE_ROOT to a new machine.
+* ownCloud updated to version 8.0.4. The ownCloud installation step now is resilient to download problems. The ownCloud configuration file is now stored in STORAGE_ROOT to fix loss of data when moving STORAGE_ROOT to a new machine.
 * The setup scripts now run `apt-get update` prior to installing anything to ensure the apt database is in sync with the packages actually available.
 
 
@@ -931,7 +1209,7 @@ DNS:
 * Internationalized Domain Names (IDNs) should now work in email. If you had custom DNS or custom web settings for internationalized domains, check that they are still working.
 * It is now possible to set multiple TXT and other types of records on the same domain in the control panel.
 * The custom DNS API was completely rewritten to support setting multiple records of the same type on a domain. Any existing client code using the DNS API will have to be rewritten. (Existing code will just get 404s back.)
-* On some systems the `nsd` service failed to start if network inferfaces were not ready.
+* On some systems the `nsd` service failed to start if network interfaces were not ready.
 
 System / Control Panel:
 

CODE_OF_CONDUCT.md

@@ -2,13 +2,13 @@
 
 Mail-in-a-Box is an open source community project about working, as a group, to empower ourselves and others to have control over our own digital communications. Just as we hope to increase technological diversity on the Internet through decentralization, we also believe that diverse viewpoints and voices among our community members foster innovation and creative solutions to the challenges we face.
 
-We are committed to providing a safe, welcoming, and harrassment-free space for collaboration, for everyone, without regard to age, disability, economic situation, ethnicity, gender identity and expression, language fluency, level of knowledge or experience, nationality, personal appearance, race, religion, sexual identity and orientation, or any other attribute. Community comes first. This policy supersedes all other project goals.
+We are committed to providing a safe, welcoming, and harassment-free space for collaboration, for everyone, without regard to age, disability, economic situation, ethnicity, gender identity and expression, language fluency, level of knowledge or experience, nationality, personal appearance, race, religion, sexual identity and orientation, or any other attribute. Community comes first. This policy supersedes all other project goals.
 
 The maintainers of Mail-in-a-Box share the dual responsibility of leading by example and enforcing these policies as necessary to maintain an open and welcoming environment. All community members should be excellent to each other.
 
 ## Scope
 
-This Code of Conduct applies to all places where Mail-in-a-Box community activity is ocurring, including on GitHub, in discussion forums, on Slack, on social media, and in real life. The Code of Conduct applies not only on websites/at events run by the Mail-in-a-Box community (e.g. our GitHub organization, our Slack team) but also at any other location where the Mail-in-a-Box community is present (e.g. in issues of other GitHub organizations where Mail-in-a-Box community members are discussing problems related to Mail-in-a-Box, or real-life professional conferences), or whenever a Mail-in-a-Box community member is representing Mail-in-a-Box to the public at large or acting on behalf of Mail-in-a-Box.
+This Code of Conduct applies to all places where Mail-in-a-Box community activity is occurring, including on GitHub, in discussion forums, on Slack, on social media, and in real life. The Code of Conduct applies not only on websites/at events run by the Mail-in-a-Box community (e.g. our GitHub organization, our Slack team) but also at any other location where the Mail-in-a-Box community is present (e.g. in issues of other GitHub organizations where Mail-in-a-Box community members are discussing problems related to Mail-in-a-Box, or real-life professional conferences), or whenever a Mail-in-a-Box community member is representing Mail-in-a-Box to the public at large or acting on behalf of Mail-in-a-Box.
 
 This code does not apply to activity on a server running Mail-in-a-Box software, unless your server is hosting a service for the Mail-in-a-Box community at large.
 

CONTRIBUTING.md

@@ -20,9 +20,9 @@ _If you're seeing an error message about your *IP address being listed in the Sp
 
 ### Modifying your `hosts` file
 
-After a while, Mail-in-a-Box will be available at `192.168.50.4` (unless you changed that in your `Vagrantfile`). To be able to use the web-based bits, we recommend to add a hostname to your `hosts` file:
+After a while, Mail-in-a-Box will be available at `192.168.56.4` (unless you changed that in your `Vagrantfile`). To be able to use the web-based bits, we recommend to add a hostname to your `hosts` file:
 
-    $ echo "192.168.50.4 mailinabox.lan" | sudo tee -a /etc/hosts
+    $ echo "192.168.56.4 mailinabox.lan" | sudo tee -a /etc/hosts
 
 You should now be able to navigate to https://mailinabox.lan/admin using your browser. There should be an initial admin user with the name `me@mailinabox.lan` and the password `12345678`.
 

README.md

@@ -23,7 +23,7 @@ Additionally, this project has a [Code of Conduct](CODE_OF_CONDUCT.md), which su
 In The Box
 ----------
 
-Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a working mail server by installing and configuring various components.
+Mail-in-a-Box turns a fresh Ubuntu 22.04 LTS 64-bit machine into a working mail server by installing and configuring various components.
 
 It is a one-click email appliance. There are no user-configurable setup options. It "just works."
 
@@ -42,6 +42,8 @@ It also includes system management tools:
 * A control panel for adding/removing mail users, aliases, custom DNS records, configuring backups, etc.
 * An API for all of the actions on the control panel
 
+Internationalized domain names are supported and configured easily (but SMTPUTF8 is not supported, unfortunately).
+
 It also supports static website hosting since the box is serving HTTPS anyway. (To serve a website for your domains elsewhere, just add a custom DNS "A" record in you Mail-in-a-Box's control panel to point domains to another server.)
 
 For more information on how Mail-in-a-Box handles your privacy, see the [security details page](security.md).
@@ -52,13 +54,13 @@ Installation
 
 See the [setup guide](https://mailinabox.email/guide.html) for detailed, user-friendly instructions.
 
-For experts, start with a completely fresh (really, I mean it) Ubuntu 18.04 LTS 64-bit machine. On the machine...
+For experts, start with a completely fresh (really, I mean it) Ubuntu 22.04 LTS 64-bit machine. On the machine...
 
-Clone this repository and checkout the tag corresponding to the most recent release:
+Clone this repository and checkout the tag corresponding to the most recent release (which you can find in the tags or releases lists on GitHub):
 
 	$ git clone https://github.com/mail-in-a-box/mailinabox
 	$ cd mailinabox
-	$ git checkout v0.54
+	$ git checkout TAGNAME
 
 Begin the installation.
 

Vagrantfile

@@ -2,14 +2,14 @@
 # vi: set ft=ruby :
 
 Vagrant.configure("2") do |config|
-  config.vm.box = "ubuntu/bionic64"
+  config.vm.box = "ubuntu/jammy64"
 
   # Network config: Since it's a mail server, the machine must be connected
   # to the public web. However, we currently don't want to expose SSH since
   # the machine's box will let anyone log into it. So instead we'll put the
   # machine on a private network.
   config.vm.hostname = "mailinabox.lan"
-  config.vm.network "private_network", ip: "192.168.50.4"
+  config.vm.network "private_network", ip: "192.168.56.4"
 
   config.vm.provision :shell, :inline => <<-SH
     # Set environment variables so that the setup script does

api/mailinabox.yml

@@ -54,24 +54,24 @@ tags:
       System operations, which include system status checks, new version checks
       and reboot status.
 paths:
-  /me:
+  /login:
-    get:
+    post:
       tags:
         - User
-      summary: Get user information
+      summary: Exchange a username and password for a session API key.
       description: |
-        Returns user information. Used for user authentication.
+        Returns user information and a session API key.
 
         Authenticate a user by supplying the auth token as a base64 encoded string in
         format `email:password` using basic authentication headers.
 
         If successful, a long-lived `api_key` is returned which can be used for subsequent
-        requests to the API.
+        requests to the API in place of the password.
-      operationId: getMe
+      operationId: login
       x-codeSamples:
         - lang: curl
           source: |
-            curl -X GET "https://{host}/admin/me" \
+            curl -X POST "https://{host}/admin/login" \
               -u "<email>:<password>"
       responses:
         200:
@@ -92,6 +92,26 @@ paths:
                     privileges:
                       - admin
                     status: ok
+  /logout:
+    post:
+      tags:
+        - User
+      summary: Invalidates a session API key.
+      description: |
+        Invalidates a session API key so that it cannot be used after this API call.
+      operationId: logout
+      x-codeSamples:
+        - lang: curl
+          source: |
+            curl -X POST "https://{host}/admin/logout" \
+              -u "<email>:<session_key>"
+      responses:
+        200:
+          description: Successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/LogoutResponse'
   /system/status:
     post:
       tags:
@@ -1803,7 +1823,7 @@ components:
 
         The `access-token` is comprised of the Base64 encoding of `username:password`.
         The `username` is the mail user's email address, and `password` can either be the mail user's
-        password, or the `api_key` returned from the `getMe` operation.
+        password, or the `api_key` returned from the `login` operation.
 
         When using `curl`, you can supply user credentials using the `-u` or `--user` parameter.
   requestBodies:
@@ -2705,3 +2725,8 @@ components:
           nullable: true
     MfaDisableSuccessResponse:
       type: string
+    LogoutResponse:
+      type: object
+      properties:
+        status:
+          type: string

conf/dovecot-mailboxes.conf

@@ -52,7 +52,7 @@ namespace inbox {
 
   # dovevot's standard mailboxes configuration file marks two sent folders
   # with the \Sent attribute, just in case clients don't agree about which
-  # they're using. We'll keep that, plus add Junk as an alterative for Spam.
+  # they're using. We'll keep that, plus add Junk as an alternative for Spam.
   # These are not auto-created.
   mailbox "Sent Messages" {
     special_use = \Sent

conf/fail2ban/filter.d/miab-munin.conf

@@ -3,5 +3,5 @@
 before = common.conf
 
 [Definition]
-failregex=<HOST> - .*GET /admin/munin/.* HTTP/1.1\" 401.*
+failregex=<HOST> - .*GET /admin/munin/.* HTTP/\d+\.\d+\" 401.*
 ignoreregex =

conf/fail2ban/jails.conf

@@ -5,7 +5,7 @@
 # Whitelist our own IP addresses. 127.0.0.1/8 is the default. But our status checks
 # ping services over the public interface so we should whitelist that address of
 # ours too. The string is substituted during installation.
-ignoreip = 127.0.0.1/8 PUBLIC_IP
+ignoreip = 127.0.0.1/8 PUBLIC_IP ::1 PUBLIC_IPV6
 
 [dovecot]
 enabled = true
@@ -74,7 +74,7 @@ action   = iptables-allports[name=recidive]
 # The last line on the action will sent an email to the configured address. This mail will
 # notify the administrator that someone has been repeatedly triggering one of the other jails.
 # By default we don't configure this address and no action is required from the admin anyway.
-# So the notification is ommited. This will prevent message appearing in the mail.log that mail
+# So the notification is omitted. This will prevent message appearing in the mail.log that mail
 # can't be delivered to fail2ban@$HOSTNAME.
 
 [postfix-sasl]

conf/mailinabox.service

@@ -4,6 +4,7 @@ After=multi-user.target
 
 [Service]
 Type=idle
+IgnoreSIGPIPE=False
 ExecStart=/usr/local/lib/mailinabox/start
 
 [Install]

conf/mozilla-autoconfig.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <clientConfig version="1.1">
     <emailProvider id="PRIMARY_HOSTNAME">
-      <domain>PRIMARY_HOSTNAME</domain>
+      <domain purpose="mx">PRIMARY_HOSTNAME</domain>
 
       <displayName>PRIMARY_HOSTNAME (Mail-in-a-Box)</displayName>
       <displayShortName>PRIMARY_HOSTNAME</displayShortName>
@@ -14,6 +14,14 @@
          <authentication>password-cleartext</authentication>
       </incomingServer>
 
+      <incomingServer type="pop3">
+         <hostname>PRIMARY_HOSTNAME</hostname>
+         <port>995</port>
+         <socketType>SSL</socketType>
+         <username>%EMAILADDRESS%</username>
+         <authentication>password-cleartext</authentication>
+      </incomingServer>
+
       <outgoingServer type="smtp">
          <hostname>PRIMARY_HOSTNAME</hostname>
          <port>465</port>
@@ -29,6 +37,20 @@
       </documentation>
     </emailProvider>
 
+    <addressbook type="carddav">
+      <username>%EMAILADDRESS%</username>
+      <authentication system="http">basic</authentication>
+      <!-- Redirects to: https://PRIMARY_HOSTNAME/cloud/remote.php/carddav/ -->
+      <url>https://PRIMARY_HOSTNAME/.well-known/carddav</url>
+    </addressbook>
+
+    <calendar type="caldav">
+      <username>%EMAILADDRESS%</username>
+      <authentication system="http">basic</authentication>
+      <!-- Redirects to: https://PRIMARY_HOSTNAME/cloud/remote.php/caldav/ -->
+      <url>https://PRIMARY_HOSTNAME/.well-known/caldav</url>
+    </calendar>
+
     <webMail>
       <loginPage url="https://PRIMARY_HOSTNAME/mail/" />
       <loginPageInfo url="https://PRIMARY_HOSTNAME/mail/" >

conf/nginx-alldomains.conf

@@ -37,7 +37,7 @@
 		return 403;
 	}
 	location ~ /mail/.*\.php {
-		# note: ~ has precendence over a regular location block
+		# note: ~ has precedence over a regular location block
 		include fastcgi_params;
 		fastcgi_split_path_info ^/mail(/.*)()$;
 		fastcgi_index index.php;

conf/nginx-primaryonly.conf

@@ -38,7 +38,7 @@
 		}
 	}
 	location ~ ^(/cloud)((?:/ocs)?/[^/]+\.php)(/.*)?$ {
-		# note: ~ has precendence over a regular location block
+		# note: ~ has precedence over a regular location block
 		# Accept URLs like:
 		# /cloud/index.php/apps/files/
 		# /cloud/index.php/apps/files/ajax/scan.php (it's really index.php; see 6fdef379adfdeac86cc2220209bdf4eb9562268d)
@@ -73,4 +73,9 @@
 	rewrite ^/.well-known/carddav /cloud/remote.php/carddav/ redirect;
 	rewrite ^/.well-known/caldav /cloud/remote.php/caldav/ redirect;
 
+	# This addresses those service discovery issues mentioned in:
+	# https://docs.nextcloud.com/server/23/admin_manual/issues/general_troubleshooting.html#service-discovery
+	rewrite ^/.well-known/webfinger /cloud/index.php/.well-known/webfinger redirect;
+	rewrite ^/.well-known/nodeinfo /cloud/index.php/.well-known/nodeinfo redirect;
+
 	# ADDITIONAL DIRECTIVES HERE

conf/nginx-ssl.conf

@@ -12,8 +12,6 @@ ssl_session_timeout 1d;
 # nginx 1.5.9+ ONLY
 ssl_buffer_size 1400; 
 
-ssl_stapling on;
-ssl_stapling_verify on;
 resolver 127.0.0.1 valid=86400;
 resolver_timeout 10;
 

conf/nginx-top.conf

@@ -7,6 +7,6 @@
 ##       your own --- please do not ask for help from us.
 
 upstream php-fpm {
-	server unix:/var/run/php/php7.2-fpm.sock;
+	server unix:/var/run/php/php8.0-fpm.sock;
 }
 

management/auth.py

@@ -1,6 +1,7 @@
-import base64, os, os.path, hmac, json
+import base64, hmac, json, secrets
+from datetime import timedelta
 
-from flask import make_response
+from expiringdict import ExpiringDict
 
 import utils
 from mailconfig import get_mail_password, get_mail_user_privileges
@@ -9,150 +10,149 @@ from mfa import get_hash_mfa_state, validate_auth_mfa
 DEFAULT_KEY_PATH   = '/var/lib/mailinabox/api.key'
 DEFAULT_AUTH_REALM = 'Mail-in-a-Box Management Server'
 
-class KeyAuthService:
+class AuthService:
-	"""Generate an API key for authenticating clients
-
-	Clients must read the key from the key file and send the key with all HTTP
-	requests. The key is passed as the username field in the standard HTTP
-	Basic Auth header.
-	"""
 	def __init__(self):
 		self.auth_realm = DEFAULT_AUTH_REALM
-		self.key = self._generate_key()
 		self.key_path = DEFAULT_KEY_PATH
+		self.max_session_duration = timedelta(days=2)
 
-	def write_key(self):
+		self.init_system_api_key()
-		"""Write key to file so authorized clients can get the key
+		self.sessions = ExpiringDict(max_len=64, max_age_seconds=self.max_session_duration.total_seconds())
 
-		The key file is created with mode 0640 so that additional users can be
+	def init_system_api_key(self):
-		authorized to access the API by granting group/ACL read permissions on
+		"""Write an API key to a local file so local processes can use the API"""
-		the key file.
-		"""
-		def create_file_with_mode(path, mode):
-			# Based on answer by A-B-B: http://stackoverflow.com/a/15015748
-			old_umask = os.umask(0)
-			try:
-				return os.fdopen(os.open(path, os.O_WRONLY | os.O_CREAT, mode), 'w')
-			finally:
-				os.umask(old_umask)
 
-		os.makedirs(os.path.dirname(self.key_path), exist_ok=True)
+		with open(self.key_path, encoding='utf-8') as file:
+			self.key = file.read()
 
-		with create_file_with_mode(self.key_path, 0o640) as key_file:
+	def authenticate(self, request, env, login_only=False, logout=False):
-			key_file.write(self.key + '\n')
+		"""Test if the HTTP Authorization header's username matches the system key, a session key,
-
+		or if the username/password passed in the header matches a local user.
-	def authenticate(self, request, env):
-		"""Test if the client key passed in HTTP Authorization header matches the service key
-		or if the or username/password passed in the header matches an administrator user.
 		Returns a tuple of the user's email address and list of user privileges (e.g.
 		('my@email', []) or ('my@email', ['admin']); raises a ValueError on login failure.
-		If the user used an API key, the user's email is returned as None."""
+		If the user used the system API key, the user's email is returned as None since
+		this key is not associated with a user."""
 
-		def decode(s):
+		def parse_http_authorization_basic(header):
-			return base64.b64decode(s.encode('ascii')).decode('ascii')
+			def decode(s):
-
+				return base64.b64decode(s.encode('ascii')).decode('ascii')
-		def parse_basic_auth(header):
 			if " " not in header:
 				return None, None
 			scheme, credentials = header.split(maxsplit=1)
 			if scheme != 'Basic':
 				return None, None
-
 			credentials = decode(credentials)
 			if ":" not in credentials:
 				return None, None
 			username, password = credentials.split(':', maxsplit=1)
 			return username, password
 
-		header = request.headers.get('Authorization')
+		username, password = parse_http_authorization_basic(request.headers.get('Authorization', ''))
-		if not header:
+		if username in {None, ""}:
-			raise ValueError("No authorization header provided.")
+			msg = "Authorization header invalid."
+			raise ValueError(msg)
 
-		username, password = parse_basic_auth(header)
+		if username.strip() == "" and password.strip() == "":
+			msg = "No email address, password, session key, or API key provided."
+			raise ValueError(msg)
 
-		if username in (None, ""):
+		# If user passed the system API key, grant administrative privs. This key
-			raise ValueError("Authorization header invalid.")
+		# is not associated with a user.
-		elif username == self.key:
+		if username == self.key and not login_only:
-			# The user passed the master API key which grants administrative privs.
 			return (None, ["admin"])
+
+		# If the password corresponds with a session token for the user, grant access for that user.
+		if self.get_session(username, password, "login", env) and not login_only:
+			sessionid = password
+			session = self.sessions[sessionid]
+			if logout:
+				# Clear the session.
+				del self.sessions[sessionid]
+			else:
+				# Re-up the session so that it does not expire.
+				self.sessions[sessionid] = session
+
+		# If no password was given, but a username was given, we're missing some information.
+		elif password.strip() == "":
+			msg = "Enter a password."
+			raise ValueError(msg)
+
 		else:
-			# The user is trying to log in with a username and either a password
+			# The user is trying to log in with a username and a password
-			# (and possibly a MFA token) or a user-specific API key.
+			# (and possibly a MFA token). On failure, an exception is raised.
-			return (username, self.check_user_auth(username, password, request, env))
+			self.check_user_auth(username, password, request, env)
+
+		# Get privileges for authorization. This call should never fail because by this
+		# point we know the email address is a valid user --- unless the user has been
+		# deleted after the session was granted. On error the call will return a tuple
+		# of an error message and an HTTP status code.
+		privs = get_mail_user_privileges(username, env)
+		if isinstance(privs, tuple): raise ValueError(privs[0])
+
+		# Return the authorization information.
+		return (username, privs)
 
 	def check_user_auth(self, email, pw, request, env):
 		# Validate a user's login email address and password. If MFA is enabled,
 		# check the MFA token in the X-Auth-Token header.
 		#
-		# On success returns a list of privileges (e.g. [] or ['admin']). On login
+		# On login failure, raises a ValueError with a login error message. On
-		# failure, raises a ValueError with a login error message.
+		# success, nothing is returned.
 
-		# Sanity check.
+		# Authenticate.
-		if email == "" or pw == "":
+		try:
-			raise ValueError("Enter an email address and password.")
-
-		# The password might be a user-specific API key. create_user_key raises
-		# a ValueError if the user does not exist.
-		if hmac.compare_digest(self.create_user_key(email, env), pw):
-			# OK.
-			pass
-		else:
 			# Get the hashed password of the user. Raise a ValueError if the
-			# email address does not correspond to a user.
+			# email address does not correspond to a user. But wrap it in the
+			# same exception as if a password fails so we don't easily reveal
+			# if an email address is valid.
 			pw_hash = get_mail_password(email, env)
 
-			# Authenticate.
+			# Use 'doveadm pw' to check credentials. doveadm will return
-			try:
+			# a non-zero exit status if the credentials are no good,
-				# Use 'doveadm pw' to check credentials. doveadm will return
+			# and check_call will raise an exception in that case.
-				# a non-zero exit status if the credentials are no good,
+			utils.shell('check_call', [
-				# and check_call will raise an exception in that case.
+				"/usr/bin/doveadm", "pw",
-				utils.shell('check_call', [
+				"-p", pw,
-					"/usr/bin/doveadm", "pw",
+				"-t", pw_hash,
-					"-p", pw,
+				])
-					"-t", pw_hash,
+		except:
-					])
+			# Login failed.
-			except:
+			msg = "Incorrect email address or password."
-				# Login failed.
+			raise ValueError(msg)
-				raise ValueError("Invalid password.")
 
-			# If MFA is enabled, check that MFA passes.
+		# If MFA is enabled, check that MFA passes.
-			status, hints = validate_auth_mfa(email, request, env)
+		status, hints = validate_auth_mfa(email, request, env)
-			if not status:
+		if not status:
-				# Login valid. Hints may have more info.
+			# Login valid. Hints may have more info.
-				raise ValueError(",".join(hints))
+			raise ValueError(",".join(hints))
 
-		# Get privileges for authorization. This call should never fail because by this
+	def create_user_password_state_token(self, email, env):
-		# point we know the email address is a valid user. But on error the call will
+		# Create a token that changes if the user's password or MFA options change
-		# return a tuple of an error message and an HTTP status code.
+		# so that sessions become invalid if any of that information changes.
-		privs = get_mail_user_privileges(email, env)
+		msg = get_mail_password(email, env).encode("utf8")
-		if isinstance(privs, tuple): raise ValueError(privs[0])
-
-		# Return a list of privileges.
-		return privs
-
-	def create_user_key(self, email, env):
-		# Create a user API key, which is a shared secret that we can re-generate from
-		# static information in our database. The shared secret contains the user's
-		# email address, current hashed password, and current MFA state, so that the
-		# key becomes invalid if any of that information changes.
-		#
-		# Use an HMAC to generate the API key using our master API key as a key,
-		# which also means that the API key becomes invalid when our master API key
-		# changes --- i.e. when this process is restarted.
-		#
-		# Raises ValueError via get_mail_password if the user doesn't exist.
-
-		# Construct the HMAC message from the user's email address and current password.
-		msg = b"AUTH:" + email.encode("utf8") + b" " + get_mail_password(email, env).encode("utf8")
 
 		# Add to the message the current MFA state, which is a list of MFA information.
 		# Turn it into a string stably.
 		msg += b" " + json.dumps(get_hash_mfa_state(email, env), sort_keys=True).encode("utf8")
 
-		# Make the HMAC.
+		# Make a HMAC using the system API key as a hash key.
 		hash_key = self.key.encode('ascii')
 		return hmac.new(hash_key, msg, digestmod="sha256").hexdigest()
 
-	def _generate_key(self):
+	def create_session_key(self, username, env, type=None):
-		raw_key = os.urandom(32)
+		# Create a new session.
-		return base64.b64encode(raw_key).decode('ascii')
+		token = secrets.token_hex(32)
+		self.sessions[token] = {
+			"email": username,
+			"password_token": self.create_user_password_state_token(username, env),
+			"type": type,
+		}
+		return token
+
+	def get_session(self, user_email, session_key, session_type, env):
+		if session_key not in self.sessions: return None
+		session = self.sessions[session_key]
+		if session_type == "login" and session["email"] != user_email: return None
+		if session["type"] != session_type: return None
+		if session["password_token"] != self.create_user_password_state_token(session["email"], env): return None
+		return session

management/backup.py

@@ -7,20 +7,17 @@
 # 4) The stopped services are restarted.
 # 5) STORAGE_ROOT/backup/after-backup is executed if it exists.
 
-import os, os.path, shutil, glob, re, datetime, sys
+import os, os.path, re, datetime, sys
 import dateutil.parser, dateutil.relativedelta, dateutil.tz
+from datetime import date
 import rtyaml
 from exclusiveprocess import Lock
 
-from utils import load_environment, shell, wait_for_service, fix_boto
+from utils import load_environment, shell, wait_for_service
-
+import operator
-rsync_ssh_options = [
-	"--ssh-options= -i /root/.ssh/id_rsa_miab",
-	"--rsync-options= -e \"/usr/bin/ssh -oStrictHostKeyChecking=no -oBatchMode=yes -p 22 -i /root/.ssh/id_rsa_miab\"",
-]
 
 def backup_status(env):
-	# If backups are dissbled, return no status.
+	# If backups are disabled, return no status.
 	config = get_backup_config(env)
 	if config["target"] == "off":
 		return { }
@@ -62,18 +59,19 @@ def backup_status(env):
 		"/usr/bin/duplicity",
 		"collection-status",
 		"--archive-dir", backup_cache_dir,
-		"--gpg-options", "--cipher-algo=AES256",
+		"--gpg-options", "'--cipher-algo=AES256'",
 		"--log-fd", "1",
-		config["target"],
+		*get_duplicity_additional_args(env),
-		] + rsync_ssh_options,
+		get_duplicity_target_url(config)
-		get_env(env),
+		],
+		get_duplicity_env_vars(env),
 		trap=True)
 	if code != 0:
 		# Command failed. This is likely due to an improperly configured remote
 		# destination for the backups or the last backup job terminated unexpectedly.
 		raise Exception("Something is wrong with the backup: " + collection_status)
 	for line in collection_status.split('\n'):
-		if line.startswith(" full") or line.startswith(" inc"):
+		if line.startswith((" full", " inc")):
 			backup = parse_line(line)
 			backups[backup["date"]] = backup
 
@@ -94,7 +92,7 @@ def backup_status(env):
 
 	# Ensure the rows are sorted reverse chronologically.
 	# This is relied on by should_force_full() and the next step.
-	backups = sorted(backups.values(), key = lambda b : b["date"], reverse=True)
+	backups = sorted(backups.values(), key = operator.itemgetter("date"), reverse=True)
 
 	# Get the average size of incremental backups, the size of the
 	# most recent full backup, and the date of the most recent
@@ -161,6 +159,8 @@ def should_force_full(config, env):
 	# since the last full backup is greater than half the size
 	# of that full backup.
 	inc_size = 0
+	# Check if day of week is a weekend day
+	weekend = date.today().weekday()>=5
 	for bak in backup_status(env)["backups"]:
 		if not bak["full"]:
 			# Scan through the incremental backups cumulating
@@ -169,17 +169,17 @@ def should_force_full(config, env):
 		else:
 			# ...until we reach the most recent full backup.
 			# Return if we should to a full backup, which is based
-			# on the size of the increments relative to the full
+			# on whether it is a weekend day, the size of the
-			# backup, as well as the age of the full backup.
+			# increments relative to the full backup, as well as
-			if inc_size > .5*bak["size"]:
+			# the age of the full backup.
-				return True
+			if weekend:
-			if dateutil.parser.parse(bak["date"]) + datetime.timedelta(days=config["min_age_in_days"]*10+1) < datetime.datetime.now(dateutil.tz.tzlocal()):
+				if inc_size > .5*bak["size"]:
-				return True
+					return True
+				if dateutil.parser.parse(bak["date"]) + datetime.timedelta(days=config["min_age_in_days"]*10+1) < datetime.datetime.now(dateutil.tz.tzlocal()):
+					return True
 			return False
-	else:
+	# If we got here there are no (full) backups, so make one.
-		# If we got here there are no (full) backups, so make one.
+	return True
-		# (I love for/else blocks. Here it's just to show off.)
-		return True
 
 def get_passphrase(env):
 	# Get the encryption passphrase. secret_key.txt is 2048 random
@@ -189,13 +189,67 @@ def get_passphrase(env):
 	# only needs to be 43 base64-characters to match AES256's key
 	# length of 32 bytes.
 	backup_root = os.path.join(env["STORAGE_ROOT"], 'backup')
-	with open(os.path.join(backup_root, 'secret_key.txt')) as f:
+	with open(os.path.join(backup_root, 'secret_key.txt'), encoding="utf-8") as f:
 		passphrase = f.readline().strip()
 	if len(passphrase) < 43: raise Exception("secret_key.txt's first line is too short!")
 
 	return passphrase
 
-def get_env(env):
+def get_duplicity_target_url(config):
+	target = config["target"]
+
+	if get_target_type(config) == "s3":
+		from urllib.parse import urlsplit, urlunsplit
+		target = list(urlsplit(target))
+
+		# Although we store the S3 hostname in the target URL,
+		# duplicity no longer accepts it in the target URL. The hostname in
+		# the target URL must be the bucket name. The hostname is passed
+		# via get_duplicity_additional_args. Move the first part of the
+		# path (the bucket name) into the hostname URL component, and leave
+		# the rest for the path. (The S3 region name is also stored in the
+		# hostname part of the URL, in the username portion, which we also
+		# have to drop here).
+		target[1], target[2] = target[2].lstrip('/').split('/', 1)
+
+		target = urlunsplit(target)
+
+	return target
+
+def get_duplicity_additional_args(env):
+	config = get_backup_config(env)
+
+	if get_target_type(config) == 'rsync':
+		# Extract a port number for the ssh transport.  Duplicity accepts the
+		# optional port number syntax in the target, but it doesn't appear to act
+		# on it, so we set the ssh port explicitly via the duplicity options.
+		from urllib.parse import urlsplit
+		try:
+			port = urlsplit(config["target"]).port
+		except ValueError:
+			port = 22
+		if port is None:
+			port = 22
+
+		return [
+			f"--ssh-options='-i /root/.ssh/id_rsa_miab -p {port}'",
+			f"--rsync-options='-e \"/usr/bin/ssh -oStrictHostKeyChecking=no -oBatchMode=yes -p {port} -i /root/.ssh/id_rsa_miab\"'",
+		]
+	if get_target_type(config) == 's3':
+		# See note about hostname in get_duplicity_target_url.
+		# The region name, which is required by some non-AWS endpoints,
+		# is saved inside the username portion of the URL.
+		from urllib.parse import urlsplit, urlunsplit
+		target = urlsplit(config["target"])
+		endpoint_url = urlunsplit(("https", target.hostname, '', '', ''))
+		args = ["--s3-endpoint-url", endpoint_url]
+		if target.username: # region name is stuffed here
+			args += ["--s3-region-name", target.username]
+		return args
+
+	return []
+
+def get_duplicity_env_vars(env):
 	config = get_backup_config(env)
 
 	env = { "PASSPHRASE" : get_passphrase(env) }
@@ -203,12 +257,13 @@ def get_env(env):
 	if get_target_type(config) == 's3':
 		env["AWS_ACCESS_KEY_ID"] = config["target_user"]
 		env["AWS_SECRET_ACCESS_KEY"] = config["target_pass"]
+		env["AWS_REQUEST_CHECKSUM_CALCULATION"] = "WHEN_REQUIRED"
+		env["AWS_RESPONSE_CHECKSUM_VALIDATION"] = "WHEN_REQUIRED"
 
 	return env
 
 def get_target_type(config):
-	protocol = config["target"].split(":")[0]
+	return config["target"].split(":")[0]
-	return protocol
 
 def perform_backup(full_backup):
 	env = load_environment()
@@ -247,9 +302,10 @@ def perform_backup(full_backup):
 			if quit:
 				sys.exit(code)
 
-	service_command("php7.2-fpm", "stop", quit=True)
+	service_command("php8.0-fpm", "stop", quit=True)
 	service_command("postfix", "stop", quit=True)
 	service_command("dovecot", "stop", quit=True)
+	service_command("postgrey", "stop", quit=True)
 
 	# Execute a pre-backup script that copies files outside the homedir.
 	# Run as the STORAGE_USER user, not as root. Pass our settings in
@@ -270,18 +326,21 @@ def perform_backup(full_backup):
 			"--verbosity", "warning", "--no-print-statistics",
 			"--archive-dir", backup_cache_dir,
 			"--exclude", backup_root,
+			"--exclude", os.path.join(env["STORAGE_ROOT"], "owncloud-backup"),
 			"--volsize", "250",
-			"--gpg-options", "--cipher-algo=AES256",
+			"--gpg-options", "'--cipher-algo=AES256'",
+			"--allow-source-mismatch",
+			*get_duplicity_additional_args(env),
 			env["STORAGE_ROOT"],
-			config["target"],
+			get_duplicity_target_url(config),
-			"--allow-source-mismatch"
+			],
-			] + rsync_ssh_options,
+			get_duplicity_env_vars(env))
-			get_env(env))
 	finally:
 		# Start services again.
+		service_command("postgrey", "start", quit=False)
 		service_command("dovecot", "start", quit=False)
 		service_command("postfix", "start", quit=False)
-		service_command("php7.2-fpm", "start", quit=False)
+		service_command("php8.0-fpm", "start", quit=False)
 
 	# Remove old backups. This deletes all backup data no longer needed
 	# from more than 3 days ago.
@@ -292,9 +351,10 @@ def perform_backup(full_backup):
 		"--verbosity", "error",
 		"--archive-dir", backup_cache_dir,
 		"--force",
-		config["target"]
+		*get_duplicity_additional_args(env),
-		] + rsync_ssh_options,
+		get_duplicity_target_url(config)
-		get_env(env))
+		],
+		get_duplicity_env_vars(env))
 
 	# From duplicity's manual:
 	# "This should only be necessary after a duplicity session fails or is
@@ -307,9 +367,10 @@ def perform_backup(full_backup):
 		"--verbosity", "error",
 		"--archive-dir", backup_cache_dir,
 		"--force",
-		config["target"]
+		*get_duplicity_additional_args(env),
-		] + rsync_ssh_options,
+		get_duplicity_target_url(config)
-		get_env(env))
+		],
+		get_duplicity_env_vars(env))
 
 	# Change ownership of backups to the user-data user, so that the after-bcakup
 	# script can access them.
@@ -345,9 +406,11 @@ def run_duplicity_verification():
 		"--compare-data",
 		"--archive-dir", backup_cache_dir,
 		"--exclude", backup_root,
-		config["target"],
+		"--exclude", os.path.join(env["STORAGE_ROOT"], "owncloud-backup"),
+		*get_duplicity_additional_args(env),
+		get_duplicity_target_url(config),
 		env["STORAGE_ROOT"],
-	] + rsync_ssh_options, get_env(env))
+	], get_duplicity_env_vars(env))
 
 def run_duplicity_restore(args):
 	env = load_environment()
@@ -357,9 +420,23 @@ def run_duplicity_restore(args):
 		"/usr/bin/duplicity",
 		"restore",
 		"--archive-dir", backup_cache_dir,
-		config["target"],
+		*get_duplicity_additional_args(env),
-		] + rsync_ssh_options + args,
+		get_duplicity_target_url(config),
-	get_env(env))
+		*args],
+		get_duplicity_env_vars(env))
+
+def print_duplicity_command():
+	import shlex
+	env = load_environment()
+	config = get_backup_config(env)
+	backup_cache_dir = os.path.join(env["STORAGE_ROOT"], 'backup', 'cache')
+	for k, v in get_duplicity_env_vars(env).items():
+		print(f"export {k}={shlex.quote(v)}")
+	print("duplicity", "{command}", shlex.join([
+		"--archive-dir", backup_cache_dir,
+		*get_duplicity_additional_args(env),
+		get_duplicity_target_url(config)
+		]))
 
 def list_target_files(config):
 	import urllib.parse
@@ -371,23 +448,32 @@ def list_target_files(config):
 	if target.scheme == "file":
 		return [(fn, os.path.getsize(os.path.join(target.path, fn))) for fn in os.listdir(target.path)]
 
-	elif target.scheme == "rsync":
+	if target.scheme == "rsync":
 		rsync_fn_size_re = re.compile(r'.*    ([^ ]*) [^ ]* [^ ]* (.*)')
 		rsync_target = '{host}:{path}'
 
+		# Strip off any trailing port specifier because it's not valid in rsync's
+		# DEST syntax.  Explicitly set the port number for the ssh transport.
+		user_host, *_ = target.netloc.rsplit(':', 1)
+		try:
+			port = target.port
+		except ValueError:
+			 port = 22
+		if port is None:
+			port = 22
+
 		target_path = target.path
 		if not target_path.endswith('/'):
-			target_path = target_path + '/'
+			target_path += '/'
-		if target_path.startswith('/'):
+		target_path = target_path.removeprefix('/')
-			target_path = target_path[1:]
 
 		rsync_command = [ 'rsync',
 					'-e',
-					'/usr/bin/ssh -i /root/.ssh/id_rsa_miab -oStrictHostKeyChecking=no -oBatchMode=yes',
+					f'/usr/bin/ssh -i /root/.ssh/id_rsa_miab -oStrictHostKeyChecking=no -oBatchMode=yes -p {port}',
 					'--list-only',
 					'-r',
 					rsync_target.format(
-						host=target.netloc,
+						host=user_host,
 						path=target_path)
 				]
 
@@ -399,83 +485,71 @@ def list_target_files(config):
 				if match:
 					ret.append( (match.groups()[1], int(match.groups()[0].replace(',',''))) )
 			return ret
+		if 'Permission denied (publickey).' in listing:
+			reason = "Invalid user or check you correctly copied the SSH key."
+		elif 'No such file or directory' in listing:
+			reason = f"Provided path {target_path} is invalid."
+		elif 'Network is unreachable' in listing:
+			reason = f"The IP address {target.hostname} is unreachable."
+		elif 'Could not resolve hostname' in listing:
+			reason = f"The hostname {target.hostname} cannot be resolved."
 		else:
-			if 'Permission denied (publickey).' in listing:
+			reason = ("Unknown error."
-				reason = "Invalid user or check you correctly copied the SSH key."
+					"Please check running 'management/backup.py --verify'"
-			elif 'No such file or directory' in listing:
+					"from mailinabox sources to debug the issue.")
-				reason = "Provided path {} is invalid.".format(target_path)
+		msg = f"Connection to rsync host failed: {reason}"
-			elif 'Network is unreachable' in listing:
+		raise ValueError(msg)
-				reason = "The IP address {} is unreachable.".format(target.hostname)
-			elif 'Could not resolve hostname' in listing:
-				reason = "The hostname {} cannot be resolved.".format(target.hostname)
-			else:
-				reason = "Unknown error." \
-						"Please check running 'management/backup.py --verify'" \
-						"from mailinabox sources to debug the issue."
-			raise ValueError("Connection to rsync host failed: {}".format(reason))
 
-	elif target.scheme == "s3":
+	if target.scheme == "s3":
-		# match to a Region
+		import boto3.s3
-		fix_boto() # must call prior to importing boto
+		from botocore.exceptions import ClientError
-		import boto.s3
-		from boto.exception import BotoServerError
-		custom_region = False
-		for region in boto.s3.regions():
-			if region.endpoint == target.hostname:
-				break
-		else:
-			# If region is not found this is a custom region
-			custom_region = True
 
+		# separate bucket from path in target
 		bucket = target.path[1:].split('/')[0]
 		path = '/'.join(target.path[1:].split('/')[1:]) + '/'
 
-		# Create a custom region with custom endpoint
-		if custom_region:
-			from boto.s3.connection import S3Connection
-			region = boto.s3.S3RegionInfo(name=bucket, endpoint=target.hostname, connection_cls=S3Connection)
-
 		# If no prefix is specified, set the path to '', otherwise boto won't list the files
 		if path == '/':
 			path = ''
 
 		if bucket == "":
-			raise ValueError("Enter an S3 bucket name.")
+			msg = "Enter an S3 bucket name."
+			raise ValueError(msg)
 
 		# connect to the region & bucket
 		try:
-			conn = region.connect(aws_access_key_id=config["target_user"], aws_secret_access_key=config["target_pass"])
+			if config['target_user'] == "" and config['target_pass'] == "":
-			bucket = conn.get_bucket(bucket)
+				s3 = boto3.client('s3', endpoint_url=f'https://{target.hostname}')
-		except BotoServerError as e:
+			else:
-			if e.status == 403:
+				s3 = boto3.client('s3', \
-				raise ValueError("Invalid S3 access key or secret access key.")
+					endpoint_url=f'https://{target.hostname}', \
-			elif e.status == 404:
+					aws_access_key_id=config['target_user'], \
-				raise ValueError("Invalid S3 bucket name.")
+					aws_secret_access_key=config['target_pass'])
-			elif e.status == 301:
+			bucket_objects = s3.list_objects_v2(Bucket=bucket, Prefix=path)['Contents']
-				raise ValueError("Incorrect region for this bucket.")
+			backup_list = [(key['Key'][len(path):], key['Size']) for key in bucket_objects]
-			raise ValueError(e.reason)
+		except ClientError as e:
-
+			raise ValueError(e)
-		return [(key.name[len(path):], key.size) for key in bucket.list(prefix=path)]
+		return backup_list
-	elif target.scheme == 'b2':
+	if target.scheme == 'b2':
 		from b2sdk.v1 import InMemoryAccountInfo, B2Api
 		from b2sdk.v1.exception import NonExistentBucket
 		info = InMemoryAccountInfo()
 		b2_api = B2Api(info)
-		
+
 		# Extract information from target
 		b2_application_keyid = target.netloc[:target.netloc.index(':')]
-		b2_application_key = target.netloc[target.netloc.index(':')+1:target.netloc.index('@')]
+		b2_application_key = urllib.parse.unquote(target.netloc[target.netloc.index(':')+1:target.netloc.index('@')])
 		b2_bucket = target.netloc[target.netloc.index('@')+1:]
 
 		try:
 			b2_api.authorize_account("production", b2_application_keyid, b2_application_key)
 			bucket = b2_api.get_bucket_by_name(b2_bucket)
-		except NonExistentBucket as e:
+		except NonExistentBucket:
-			raise ValueError("B2 Bucket does not exist. Please double check your information!")
+			msg = "B2 Bucket does not exist. Please double check your information!"
+			raise ValueError(msg)
 		return [(key.file_name, key.size) for key, _ in bucket.ls()]
 
-	else:
+	raise ValueError(config["target"])
-		raise ValueError(config["target"])
 
 
 def backup_set_custom(env, target, target_user, target_pass, min_age):
@@ -492,7 +566,7 @@ def backup_set_custom(env, target, target_user, target_pass, min_age):
 
 	# Validate.
 	try:
-		if config["target"] not in ("off", "local"):
+		if config["target"] not in {"off", "local"}:
 			# these aren't supported by the following function, which expects a full url in the target key,
 			# which is what is there except when loading the config prior to saving
 			list_target_files(config)
@@ -514,8 +588,9 @@ def get_backup_config(env, for_save=False, for_ui=False):
 
 	# Merge in anything written to custom.yaml.
 	try:
-		custom_config = rtyaml.load(open(os.path.join(backup_root, 'custom.yaml')))
+		with open(os.path.join(backup_root, 'custom.yaml'), encoding="utf-8") as f:
-		if not isinstance(custom_config, dict): raise ValueError() # caught below
+			custom_config = rtyaml.load(f)
+		if not isinstance(custom_config, dict): raise ValueError # caught below
 		config.update(custom_config)
 	except:
 		pass
@@ -528,8 +603,7 @@ def get_backup_config(env, for_save=False, for_ui=False):
 	# authentication details. The user will have to re-enter it.
 	if for_ui:
 		for field in ("target_user", "target_pass"):
-			if field in config:
+			config.pop(field, None)
-				del config[field]
 
 	# helper fields for the admin
 	config["file_target_directory"] = os.path.join(backup_root, 'encrypted')
@@ -539,17 +613,17 @@ def get_backup_config(env, for_save=False, for_ui=False):
 		config["target"] = "file://" + config["file_target_directory"]
 	ssh_pub_key = os.path.join('/root', '.ssh', 'id_rsa_miab.pub')
 	if os.path.exists(ssh_pub_key):
-		config["ssh_pub_key"] = open(ssh_pub_key, 'r').read()
+		with open(ssh_pub_key, encoding="utf-8") as f:
+			config["ssh_pub_key"] = f.read()
 
 	return config
 
 def write_backup_config(env, newconfig):
 	backup_root = os.path.join(env["STORAGE_ROOT"], 'backup')
-	with open(os.path.join(backup_root, 'custom.yaml'), "w") as f:
+	with open(os.path.join(backup_root, 'custom.yaml'), "w", encoding="utf-8") as f:
 		f.write(rtyaml.dump(newconfig))
 
 if __name__ == "__main__":
-	import sys
 	if sys.argv[-1] == "--verify":
 		# Run duplicity's verification command to check a) the backup files
 		# are readable, and b) report if they are up to date.
@@ -558,7 +632,7 @@ if __name__ == "__main__":
 	elif sys.argv[-1] == "--list":
 		# List the saved backup files.
 		for fn, size in list_target_files(get_backup_config(load_environment())):
-			print("{}\t{}".format(fn, size))
+			print(f"{fn}\t{size}")
 
 	elif sys.argv[-1] == "--status":
 		# Show backup status.
@@ -571,6 +645,9 @@ if __name__ == "__main__":
 		# to duplicity. The restore path should be specified.
 		run_duplicity_restore(sys.argv[2:])
 
+	elif sys.argv[-1] == "--duplicity-command":
+		print_duplicity_command()
+
 	else:
 		# Perform a backup. Add --full to force a full backup rather than
 		# possibly performing an incremental backup.

management/cli.py

@@ -6,7 +6,8 @@
 # root API key. This file is readable only by root, so this
 # tool can only be used as root.
 
-import sys, getpass, urllib.request, urllib.error, json, re, csv
+import sys, getpass, urllib.request, urllib.error, json, csv
+import contextlib
 
 def mgmt(cmd, data=None, is_json=False):
 	# The base URL for the management daemon. (Listens on IPv4 only.)
@@ -19,10 +20,8 @@ def mgmt(cmd, data=None, is_json=False):
 		response = urllib.request.urlopen(req)
 	except urllib.error.HTTPError as e:
 		if e.code == 401:
-			try:
+			with contextlib.suppress(Exception):
 				print(e.read().decode("utf8"))
-			except:
-				pass
 			print("The management daemon refused access. The API key file may be out of sync. Try 'service mailinabox restart'.", file=sys.stderr)
 		elif hasattr(e, 'read'):
 			print(e.read().decode('utf8'), file=sys.stderr)
@@ -47,7 +46,8 @@ def read_password():
     return first
 
 def setup_key_auth(mgmt_uri):
-	key = open('/var/lib/mailinabox/api.key').read().strip()
+	with open('/var/lib/mailinabox/api.key', encoding='utf-8') as f:
+		key = f.read().strip()
 
 	auth_handler = urllib.request.HTTPBasicAuthHandler()
 	auth_handler.add_password(
@@ -65,6 +65,7 @@ if len(sys.argv) < 2:
   {cli} user password user@domain.com [password]
   {cli} user remove user@domain.com
   {cli} user make-admin user@domain.com
+  {cli} user quota user@domain [new-quota]       (get or set user quota)
   {cli} user remove-admin user@domain.com
   {cli} user admins                              (lists admins)
   {cli} user mfa show user@domain.com            (shows MFA devices for user, if any)
@@ -90,12 +91,9 @@ elif sys.argv[1] == "user" and len(sys.argv) == 2:
 				print("*", end='')
 			print()
 
-elif sys.argv[1] == "user" and sys.argv[2] in ("add", "password"):
+elif sys.argv[1] == "user" and sys.argv[2] in {"add", "password"}:
 	if len(sys.argv) < 5:
-		if len(sys.argv) < 4:
+		email = input('email: ') if len(sys.argv) < 4 else sys.argv[3]
-			email = input("email: ")
-		else:
-			email = sys.argv[3]
 		pw = read_password()
 	else:
 		email, pw = sys.argv[3:5]
@@ -108,11 +106,8 @@ elif sys.argv[1] == "user" and sys.argv[2] in ("add", "password"):
 elif sys.argv[1] == "user" and sys.argv[2] == "remove" and len(sys.argv) == 4:
 	print(mgmt("/mail/users/remove", { "email": sys.argv[3] }))
 
-elif sys.argv[1] == "user" and sys.argv[2] in ("make-admin", "remove-admin") and len(sys.argv) == 4:
+elif sys.argv[1] == "user" and sys.argv[2] in {"make-admin", "remove-admin"} and len(sys.argv) == 4:
-	if sys.argv[2] == "make-admin":
+	action = 'add' if sys.argv[2] == 'make-admin' else 'remove'
-		action = "add"
-	else:
-		action = "remove"
 	print(mgmt("/mail/users/privileges/" + action, { "email": sys.argv[3], "privilege": "admin" }))
 
 elif sys.argv[1] == "user" and sys.argv[2] == "admins":
@@ -123,6 +118,14 @@ elif sys.argv[1] == "user" and sys.argv[2] == "admins":
 			if "admin" in user['privileges']:
 				print(user['email'])
 
+elif sys.argv[1] == "user" and sys.argv[2] == "quota" and len(sys.argv) == 4:
+	# Get a user's quota
+	print(mgmt(f"/mail/users/quota?text=1&email={sys.argv[3]}"))
+
+elif sys.argv[1] == "user" and sys.argv[2] == "quota" and len(sys.argv) == 5:
+	# Set a user's quota
+	users = mgmt("/mail/users/quota", { "email": sys.argv[3], "quota": sys.argv[4] })
+
 elif sys.argv[1] == "user" and len(sys.argv) == 5 and sys.argv[2:4] == ["mfa", "show"]:
 	# Show MFA status for a user.
 	status = mgmt("/mfa/status", { "user": sys.argv[4] }, is_json=True)
@@ -131,7 +134,7 @@ elif sys.argv[1] == "user" and len(sys.argv) == 5 and sys.argv[2:4] == ["mfa", "
 	for mfa in status["enabled_mfa"]:
 		W.writerow([mfa["id"], mfa["type"], mfa["label"]])
 
-elif sys.argv[1] == "user" and len(sys.argv) in (5, 6) and sys.argv[2:4] == ["mfa", "disable"]:
+elif sys.argv[1] == "user" and len(sys.argv) in {5, 6} and sys.argv[2:4] == ["mfa", "disable"]:
 	# Disable MFA (all or a particular device) for a user.
 	print(mgmt("/mfa/disable", { "user": sys.argv[4], "mfa-id": sys.argv[5] if len(sys.argv) == 6 else None }))
 
@@ -147,4 +150,3 @@ elif sys.argv[1] == "alias" and sys.argv[2] == "remove" and len(sys.argv) == 4:
 else:
 	print("Invalid command-line arguments.")
 	sys.exit(1)
-

management/daemon.py

@@ -1,5 +1,8 @@
 #!/usr/local/lib/mailinabox/env/bin/python3
 #
+# The API can be accessed on the command line, e.g. use `curl` like so:
+#    curl --user $(</var/lib/mailinabox/api.key): http://localhost:10222/mail/users
+#
 # During development, you can start the Mail-in-a-Box control panel
 # by running this script, e.g.:
 #
@@ -8,32 +11,32 @@
 # service mailinabox start # when done debugging, start it up again
 
 import os, os.path, re, json, time
-import multiprocessing.pool, subprocess
+import multiprocessing.pool
 
 from functools import wraps
 
-from flask import Flask, request, render_template, abort, Response, send_from_directory, make_response
+from flask import Flask, request, render_template, Response, send_from_directory, make_response
 
 import auth, utils
 from mailconfig import get_mail_users, get_mail_users_ex, get_admins, add_mail_user, set_mail_password, remove_mail_user
 from mailconfig import get_mail_user_privileges, add_remove_mail_user_privilege
 from mailconfig import get_mail_aliases, get_mail_aliases_ex, get_mail_domains, add_mail_alias, remove_mail_alias
+from mailconfig import get_mail_quota, set_mail_quota
 from mfa import get_public_mfa_state, provision_totp, validate_totp_secret, enable_mfa, disable_mfa
+import contextlib
 
 env = utils.load_environment()
 
-auth_service = auth.KeyAuthService()
+auth_service = auth.AuthService()
 
 # We may deploy via a symbolic link, which confuses flask's template finding.
 me = __file__
-try:
+with contextlib.suppress(OSError):
 	me = os.readlink(__file__)
-except OSError:
-	pass
 
 # for generating CSRs we need a list of country codes
 csr_country_codes = []
-with open(os.path.join(os.path.dirname(me), "csr_country_codes.tsv")) as f:
+with open(os.path.join(os.path.dirname(me), "csr_country_codes.tsv"), encoding="utf-8") as f:
 	for line in f:
 		if line.strip() == "" or line.startswith("#"): continue
 		code, name = line.strip().split("\t")[0:2]
@@ -53,8 +56,10 @@ def authorized_personnel_only(viewfunc):
 		try:
 			email, privs = auth_service.authenticate(request, env)
 		except ValueError as e:
-			# Write a line in the log recording the failed login
+			# Write a line in the log recording the failed login, unless no authorization header
-			log_failed_login(request)
+			# was given which can happen on an initial request before a 403 response.
+			if "Authorization" in request.headers:
+				log_failed_login(request)
 
 			# Authentication failed.
 			error = str(e)
@@ -75,7 +80,7 @@ def authorized_personnel_only(viewfunc):
 		# Not authorized. Return a 401 (send auth) and a prompt to authorize by default.
 		status = 401
 		headers = {
-			'WWW-Authenticate': 'Basic realm="{0}"'.format(auth_service.auth_realm),
+			'WWW-Authenticate': f'Basic realm="{auth_service.auth_realm}"',
 			'X-Reason': error,
 		}
 
@@ -85,15 +90,14 @@ def authorized_personnel_only(viewfunc):
 			status = 403
 			headers = None
 
-		if request.headers.get('Accept') in (None, "", "*/*"):
+		if request.headers.get('Accept') in {None, "", "*/*"}:
 			# Return plain text output.
 			return Response(error+"\n", status=status, mimetype='text/plain', headers=headers)
-		else:
+		# Return JSON output.
-			# Return JSON output.
+		return Response(json.dumps({
-			return Response(json.dumps({
+			"status": "error",
-				"status": "error",
+			"reason": error,
-				"reason": error,
+			})+"\n", status=status, mimetype='application/json', headers=headers)
-				})+"\n", status=status, mimetype='application/json', headers=headers)
 
 	return newview
 
@@ -116,9 +120,9 @@ def index():
 	no_users_exist = (len(get_mail_users(env)) == 0)
 	no_admins_exist = (len(get_admins(env)) == 0)
 
-	utils.fix_boto() # must call prior to importing boto
+	import boto3.s3
-	import boto.s3
+	backup_s3_hosts = [(r, f"s3.{r}.amazonaws.com") for r in boto3.session.Session().get_available_regions('s3')]
-	backup_s3_hosts = [(r.name, r.endpoint) for r in boto.s3.regions()]
+
 
 	return render_template('index.html',
 		hostname=env['PRIMARY_HOSTNAME'],
@@ -131,38 +135,48 @@ def index():
 		csr_country_codes=csr_country_codes,
 	)
 
-@app.route('/me')
+# Create a session key by checking the username/password in the Authorization header.
-def me():
+@app.route('/login', methods=["POST"])
+def login():
 	# Is the caller authorized?
 	try:
-		email, privs = auth_service.authenticate(request, env)
+		email, privs = auth_service.authenticate(request, env, login_only=True)
 	except ValueError as e:
 		if "missing-totp-token" in str(e):
 			return json_response({
 				"status": "missing-totp-token",
 				"reason": str(e),
 			})
-		else:
+		# Log the failed login
-			# Log the failed login
+		log_failed_login(request)
-			log_failed_login(request)
+		return json_response({
-			return json_response({
+			"status": "invalid",
-				"status": "invalid",
+			"reason": str(e),
-				"reason": str(e),
+		})
-			})
 
+	# Return a new session for the user.
 	resp = {
 		"status": "ok",
 		"email": email,
 		"privileges": privs,
+		"api_key": auth_service.create_session_key(email, env, type='login'),
 	}
 
-	# Is authorized as admin? Return an API key for future use.
+	app.logger.info("New login session created for %s", email)
-	if "admin" in privs:
-		resp["api_key"] = auth_service.create_user_key(email, env)
 
 	# Return.
 	return json_response(resp)
 
+@app.route('/logout', methods=["POST"])
+def logout():
+	try:
+		email, _ = auth_service.authenticate(request, env, logout=True)
+		app.logger.info("%s logged out", email)
+	except ValueError:
+		pass
+	finally:
+		return json_response({ "status": "ok" })
+
 # MAIL
 
 @app.route('/mail/users')
@@ -170,14 +184,36 @@ def me():
 def mail_users():
 	if request.args.get("format", "") == "json":
 		return json_response(get_mail_users_ex(env, with_archived=True))
-	else:
+	return "".join(x+"\n" for x in get_mail_users(env))
-		return "".join(x+"\n" for x in get_mail_users(env))
 
 @app.route('/mail/users/add', methods=['POST'])
 @authorized_personnel_only
 def mail_users_add():
+	quota = request.form.get('quota', '0')
 	try:
-		return add_mail_user(request.form.get('email', ''), request.form.get('password', ''), request.form.get('privileges', ''), env)
+		return add_mail_user(request.form.get('email', ''), request.form.get('password', ''), request.form.get('privileges', ''), quota, env)
+	except ValueError as e:
+		return (str(e), 400)
+
+@app.route('/mail/users/quota', methods=['GET'])
+@authorized_personnel_only
+def get_mail_users_quota():
+	email = request.values.get('email', '')
+	quota = get_mail_quota(email, env)
+
+	if request.values.get('text'):
+		return quota
+
+	return json_response({
+		"email": email,
+		"quota": quota
+	})
+
+@app.route('/mail/users/quota', methods=['POST'])
+@authorized_personnel_only
+def mail_users_quota():
+	try:
+		return set_mail_quota(request.form.get('email', ''), request.form.get('quota'), env)
 	except ValueError as e:
 		return (str(e), 400)
 
@@ -218,8 +254,7 @@ def mail_user_privs_remove():
 def mail_aliases():
 	if request.args.get("format", "") == "json":
 		return json_response(get_mail_aliases_ex(env))
-	else:
+	return "".join(address+"\t"+receivers+"\t"+(senders or "")+"\n" for address, receivers, senders, auto in get_mail_aliases(env))
-		return "".join(address+"\t"+receivers+"\t"+(senders or "")+"\n" for address, receivers, senders in get_mail_aliases(env))
 
 @app.route('/mail/aliases/add', methods=['POST'])
 @authorized_personnel_only
@@ -314,7 +349,7 @@ def dns_get_records(qname=None, rtype=None):
 		r["sort-order"]["created"] = i
 	domain_sort_order = utils.sort_domains([r["qname"] for r in records], env)
 	for i, r in enumerate(sorted(records, key = lambda r : (
-			zones.index(r["zone"]),
+			zones.index(r["zone"]) if r.get("zone") else 0, # record is not within a zone managed by the box
 			domain_sort_order.index(r["qname"]),
 			r["rtype"]))):
 		r["sort-order"]["qname"] = i
@@ -339,9 +374,9 @@ def dns_set_record(qname, rtype="A"):
 			# Get the existing records matching the qname and rtype.
 			return dns_get_records(qname, rtype)
 
-		elif request.method in ("POST", "PUT"):
+		if request.method in {"POST", "PUT"}:
 			# There is a default value for A/AAAA records.
-			if rtype in ("A", "AAAA") and value == "":
+			if rtype in {"A", "AAAA"} and value == "":
 				value = request.environ.get("HTTP_X_FORWARDED_FOR") # normally REMOTE_ADDR but we're behind nginx as a reverse proxy
 
 			# Cannot add empty records.
@@ -403,7 +438,7 @@ def ssl_get_status():
 		{
 			"domain": d["domain"],
 			"status": d["ssl_certificate"][0],
-			"text": d["ssl_certificate"][1] + ((" " + cant_provision[d["domain"]] if d["domain"] in cant_provision else ""))
+			"text": d["ssl_certificate"][1] + (" " + cant_provision[d["domain"]] if d["domain"] in cant_provision else "")
 		} for d in domains_status ]
 
 	# Warn the user about domain names not hosted here because of other settings.
@@ -475,7 +510,7 @@ def totp_post_enable():
 	secret = request.form.get('secret')
 	token = request.form.get('token')
 	label = request.form.get('label')
-	if type(token) != str:
+	if not isinstance(token, str):
 		return ("Bad Input", 400)
 	try:
 		validate_totp_secret(secret)
@@ -497,8 +532,8 @@ def totp_post_disable():
 		return (str(e), 400)
 	if result: # success
 		return "OK"
-	else: # error
+	# error
-		return ("Invalid user or MFA id.", 400)
+	return ("Invalid user or MFA id.", 400)
 
 # WEB
 
@@ -555,6 +590,8 @@ def system_status():
 	# Create a temporary pool of processes for the status checks
 	with multiprocessing.pool.Pool(processes=5) as pool:
 		run_checks(False, env, output, pool)
+		pool.close()
+		pool.join()
 	return json_response(output.items)
 
 @app.route('/system/updates')
@@ -562,8 +599,7 @@ def system_status():
 def show_updates():
 	from status_checks import list_apt_updates
 	return "".join(
-		"%s (%s)\n"
+		"{} ({})\n".format(p["package"], p["version"])
-		% (p["package"], p["version"])
 		for p in list_apt_updates())
 
 @app.route('/system/update-packages', methods=["POST"])
@@ -581,8 +617,7 @@ def needs_reboot():
 	from status_checks import is_reboot_needed_due_to_package_installation
 	if is_reboot_needed_due_to_package_installation():
 		return json_response(True)
-	else:
+	return json_response(False)
-		return json_response(False)
 
 @app.route('/system/reboot', methods=["POST"])
 @authorized_personnel_only
@@ -591,8 +626,7 @@ def do_reboot():
 	from status_checks import is_reboot_needed_due_to_package_installation
 	if is_reboot_needed_due_to_package_installation():
 		return utils.shell("check_output", ["/sbin/shutdown", "-r", "now"], capture_stderr=True)
-	else:
+	return "No reboot is required, so it is not allowed."
-		return "No reboot is required, so it is not allowed."
 
 
 @app.route('/system/backup/status')
@@ -638,16 +672,41 @@ def privacy_status_set():
 # MUNIN
 
 @app.route('/munin/')
-@app.route('/munin/<path:filename>')
 @authorized_personnel_only
-def munin(filename=""):
+def munin_start():
-	# Checks administrative access (@authorized_personnel_only) and then just proxies
+	# Munin pages, static images, and dynamically generated images are served
-	# the request to static files.
+	# outside of the AJAX API. We'll start with a 'start' API that sets a cookie
+	# that subsequent requests will read for authorization. (We don't use cookies
+	# for the API to avoid CSRF vulnerabilities.)
+	response = make_response("OK")
+	response.set_cookie("session", auth_service.create_session_key(request.user_email, env, type='cookie'),
+	    max_age=60*30, secure=True, httponly=True, samesite="Strict") # 30 minute duration
+	return response
+
+def check_request_cookie_for_admin_access():
+	session = auth_service.get_session(None, request.cookies.get("session", ""), "cookie", env)
+	if not session: return False
+	privs = get_mail_user_privileges(session["email"], env)
+	if not isinstance(privs, list): return False
+	return "admin" in privs
+
+def authorized_personnel_only_via_cookie(f):
+	@wraps(f)
+	def g(*args, **kwargs):
+		if not check_request_cookie_for_admin_access():
+			return Response("Unauthorized", status=403, mimetype='text/plain', headers={})
+		return f(*args, **kwargs)
+	return g
+
+@app.route('/munin/<path:filename>')
+@authorized_personnel_only_via_cookie
+def munin_static_file(filename=""):
+	# Proxy the request to static files.
 	if filename == "": filename = "index.html"
 	return send_from_directory("/var/cache/munin/www", filename)
 
 @app.route('/munin/cgi-graph/<path:filename>')
-@authorized_personnel_only
+@authorized_personnel_only_via_cookie
 def munin_cgi(filename):
 	""" Relay munin cgi dynazoom requests
 	/usr/lib/munin/cgi/munin-cgi-graph is a perl cgi script in the munin package
@@ -665,7 +724,7 @@ def munin_cgi(filename):
 	support infrastructure like spawn-fcgi.
 	"""
 
-	COMMAND = 'su - munin --preserve-environment --shell=/bin/bash -c /usr/lib/munin/cgi/munin-cgi-graph'
+	COMMAND = 'su munin --preserve-environment --shell=/bin/bash -c /usr/lib/munin/cgi/munin-cgi-graph'
 	# su changes user, we use the munin user here
 	# --preserve-environment retains the environment, which is where Popen's `env` data is
 	# --shell=/bin/bash ensures the shell used is bash
@@ -677,7 +736,7 @@ def munin_cgi(filename):
 
 	query_str = request.query_string.decode("utf-8", 'ignore')
 
-	env = {'PATH_INFO': '/%s/' % filename, 'REQUEST_METHOD': 'GET', 'QUERY_STRING': query_str}
+	env = {'PATH_INFO': f'/{filename}/', 'REQUEST_METHOD': 'GET', 'QUERY_STRING': query_str}
 	code, binout = utils.shell('check_output',
 							   COMMAND.split(" ", 5),
 							   # Using a maxsplit of 5 keeps the last arguments together
@@ -707,14 +766,11 @@ def log_failed_login(request):
 	# During setup we call the management interface directly to determine the user
 	# status. So we can't always use X-Forwarded-For because during setup that header
 	# will not be present.
-	if request.headers.getlist("X-Forwarded-For"):
+	ip = request.headers.getlist("X-Forwarded-For")[0] if request.headers.getlist("X-Forwarded-For") else request.remote_addr
-		ip = request.headers.getlist("X-Forwarded-For")[0]
-	else:
-		ip = request.remote_addr
 
 	# We need to add a timestamp to the log message, otherwise /dev/log will eat the "duplicate"
 	# message.
-	app.logger.warning( "Mail-in-a-Box Management Daemon: Failed login attempt from ip %s - timestamp %s" % (ip, time.time()))
+	app.logger.warning("Mail-in-a-Box Management Daemon: Failed login attempt from ip %s - timestamp %s", ip, time.time())
 
 
 # APP
@@ -724,30 +780,10 @@ if __name__ == '__main__':
 		# Turn on Flask debugging.
 		app.debug = True
 
-		# Use a stable-ish master API key so that login sessions don't restart on each run.
-		# Use /etc/machine-id to seed the key with a stable secret, but add something
-		# and hash it to prevent possibly exposing the machine id, using the time so that
-		# the key is not valid indefinitely.
-		import hashlib
-		with open("/etc/machine-id") as f:
-			api_key = f.read()
-		api_key += "|" + str(int(time.time() / (60*60*2)))
-		hasher = hashlib.sha1()
-		hasher.update(api_key.encode("ascii"))
-		auth_service.key = hasher.hexdigest()
-
-	if "APIKEY" in os.environ: auth_service.key = os.environ["APIKEY"]
-
 	if not app.debug:
 		app.logger.addHandler(utils.create_syslog_handler())
 
-	# For testing on the command line, you can use `curl` like so:
+	#app.logger.info('API key: ' + auth_service.key)
-	#    curl --user $(</var/lib/mailinabox/api.key): http://localhost:10222/mail/users
-	auth_service.write_key()
-
-	# For testing in the browser, you can copy the API key that's output to the
-	# debug console and enter that as the username
-	app.logger.info('API key: ' + auth_service.key)
 
 	# Start the application server. Listens on 127.0.0.1 (IPv4 only).
 	app.run(port=10222)

management/daily_tasks.sh

@@ -11,7 +11,7 @@ export LC_TYPE=en_US.UTF-8
 
 # On Mondays, i.e. once a week, send the administrator a report of total emails
 # sent and received so the admin might notice server abuse.
-if [ `date "+%u"` -eq 1 ]; then
+if [ "$(date "+%u")" -eq 1 ]; then
     management/mail_log.py -t week | management/email_administrator.py "Mail-in-a-Box Usage Report"
 fi
 

management/dns_update.py

@@ -4,19 +4,19 @@
 # and mail aliases and restarts nsd.
 ########################################################################
 
-import sys, os, os.path, urllib.parse, datetime, re, hashlib, base64
+import sys, os, os.path, datetime, re, hashlib, base64
 import ipaddress
 import rtyaml
 import dns.resolver
 
-from utils import shell, load_env_vars_from_file, safe_domain_name, sort_domains
+from utils import shell, load_env_vars_from_file, safe_domain_name, sort_domains, get_ssh_port
 from ssl_certificates import get_ssl_certificates, check_certificate
 
 # From https://stackoverflow.com/questions/3026957/how-to-validate-a-domain-name-using-regex-php/16491074#16491074
 # This regular expression matches domain names according to RFCs, it also accepts fqdn with an leading dot,
-# underscores, as well as asteriks which are allowed in domain names but not hostnames (i.e. allowed in
+# underscores, as well as asterisks which are allowed in domain names but not hostnames (i.e. allowed in
 # DNS but not in URLs), which are common in certain record types like for DKIM.
-DOMAIN_RE = "^(?!\-)(?:[*][.])?(?:[a-zA-Z\d\-_]{0,62}[a-zA-Z\d_]\.){1,126}(?!\d+)[a-zA-Z\d_]{1,63}(\.?)$"
+DOMAIN_RE = r"^(?!\-)(?:[*][.])?(?:[a-zA-Z\d\-_]{0,62}[a-zA-Z\d_]\.){1,126}(?!\d+)[a-zA-Z\d_]{1,63}(\.?)$"
 
 def get_dns_domains(env):
 	# Add all domain names in use by email users and mail aliases, any
@@ -38,7 +38,7 @@ def get_dns_zones(env):
 	# Exclude domains that are subdomains of other domains we know. Proceed
 	# by looking at shorter domains first.
 	zone_domains = set()
-	for domain in sorted(domains, key=lambda d : len(d)):
+	for domain in sorted(domains, key=len):
 		for d in zone_domains:
 			if domain.endswith("." + d):
 				# We found a parent domain already in the list.
@@ -48,9 +48,7 @@ def get_dns_zones(env):
 			zone_domains.add(domain)
 
 	# Make a nice and safe filename for each domain.
-	zonefiles = []
+	zonefiles = [[domain, safe_domain_name(domain) + ".txt"] for domain in zone_domains]
-	for domain in zone_domains:
-		zonefiles.append([domain, safe_domain_name(domain) + ".txt"])
 
 	# Sort the list so that the order is nice and so that nsd.conf has a
 	# stable order so we don't rewrite the file & restart the service
@@ -96,9 +94,18 @@ def do_dns_update(env, force=False):
 		if len(updated_domains) == 0:
 			updated_domains.append("DNS configuration")
 
-	# Kick nsd if anything changed.
+	# Tell nsd to reload changed zone files.
 	if len(updated_domains) > 0:
-		shell('check_call', ["/usr/sbin/service", "nsd", "restart"])
+		# 'reconfig' is needed if there are added or removed zones, but
+		# it may not reload existing zones, so we call 'reload' too. If
+		# nsd isn't running, nsd-control fails, so in that case revert
+		# to restarting nsd to make sure it is running. Restarting nsd
+		# should also refresh everything.
+		try:
+			shell('check_call', ["/usr/sbin/nsd-control", "reconfig"])
+			shell('check_call', ["/usr/sbin/nsd-control", "reload"])
+		except:
+			shell('check_call', ["/usr/sbin/service", "nsd", "restart"])
 
 	# Write the OpenDKIM configuration tables for all of the mail domains.
 	from mailconfig import get_mail_domains
@@ -116,8 +123,7 @@ def do_dns_update(env, force=False):
 	if len(updated_domains) == 0:
 		# if nothing was updated (except maybe OpenDKIM's files), don't show any output
 		return ""
-	else:
+	return "updated DNS: " + ",".join(updated_domains) + "\n"
-		return "updated DNS: " + ",".join(updated_domains) + "\n"
 
 ########################################################################
 
@@ -179,14 +185,13 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 	# is managed outside of the box.
 	if is_zone:
 		# Obligatory NS record to ns1.PRIMARY_HOSTNAME.
-		records.append((None,  "NS",  "ns1.%s." % env["PRIMARY_HOSTNAME"], False))
+		records.append((None,  "NS",  "ns1.{}.".format(env["PRIMARY_HOSTNAME"]), False))
 
 		# NS record to ns2.PRIMARY_HOSTNAME or whatever the user overrides.
 		# User may provide one or more additional nameservers
 		secondary_ns_list = get_secondary_dns(additional_records, mode="NS") \
 			or ["ns2." + env["PRIMARY_HOSTNAME"]]
-		for secondary_ns in secondary_ns_list:
+		records.extend((None,  "NS", secondary_ns+'.', False) for secondary_ns in secondary_ns_list)
-			records.append((None,  "NS", secondary_ns+'.', False))
 
 
 	# In PRIMARY_HOSTNAME...
@@ -203,8 +208,7 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 		records.append(("_443._tcp", "TLSA", build_tlsa_record(env), "Optional. When DNSSEC is enabled, provides out-of-band HTTPS certificate validation for a few web clients that support it."))
 
 		# Add a SSHFP records to help SSH key validation. One per available SSH key on this system.
-		for value in build_sshfp_records():
+		records.extend((None, "SSHFP", value, "Optional. Provides an out-of-band method for verifying an SSH key before connecting. Use 'VerifyHostKeyDNS yes' (or 'VerifyHostKeyDNS ask') when connecting with ssh.") for value in build_sshfp_records())
-			records.append((None, "SSHFP", value, "Optional. Provides an out-of-band method for verifying an SSH key before connecting. Use 'VerifyHostKeyDNS yes' (or 'VerifyHostKeyDNS ask') when connecting with ssh."))
 
 	# Add DNS records for any subdomains of this domain. We should not have a zone for
 	# both a domain and one of its subdomains.
@@ -214,7 +218,7 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 			subdomain_qname = subdomain[0:-len("." + domain)]
 			subzone = build_zone(subdomain, domain_properties, additional_records, env, is_zone=False)
 			for child_qname, child_rtype, child_value, child_explanation in subzone:
-				if child_qname == None:
+				if child_qname is None:
 					child_qname = subdomain_qname
 				else:
 					child_qname += "." + subdomain_qname
@@ -222,10 +226,7 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 
 	has_rec_base = list(records) # clone current state
 	def has_rec(qname, rtype, prefix=None):
-		for rec in has_rec_base:
+		return any(rec[0] == qname and rec[1] == rtype and (prefix is None or rec[2].startswith(prefix)) for rec in has_rec_base)
-			if rec[0] == qname and rec[1] == rtype and (prefix is None or rec[2].startswith(prefix)):
-				return True
-		return False
 
 	# The user may set other records that don't conflict with our settings.
 	# Don't put any TXT records above this line, or it'll prevent any custom TXT records.
@@ -251,16 +252,16 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 	# was set. So set has_rec_base to a clone of the current set of DNS settings, and don't update
 	# during this process.
 	has_rec_base = list(records)
-	a_expl = "Required. May have a different value. Sets the IP address that %s resolves to for web hosting and other services besides mail. The A record must be present but its value does not affect mail delivery." % domain
+	a_expl = f"Required. May have a different value. Sets the IP address that {domain} resolves to for web hosting and other services besides mail. The A record must be present but its value does not affect mail delivery."
 	if domain_properties[domain]["auto"]:
-		if domain.startswith("ns1.") or domain.startswith("ns2."): a_expl = False # omit from 'External DNS' page since this only applies if box is its own DNS server
+		if domain.startswith(("ns1.", "ns2.")): a_expl = False # omit from 'External DNS' page since this only applies if box is its own DNS server
-		if domain.startswith("www."): a_expl = "Optional. Sets the IP address that %s resolves to so that the box can provide a redirect to the parent domain." % domain
+		if domain.startswith("www."): a_expl = f"Optional. Sets the IP address that {domain} resolves to so that the box can provide a redirect to the parent domain."
 		if domain.startswith("mta-sts."): a_expl = "Optional. MTA-STS Policy Host serving /.well-known/mta-sts.txt."
 		if domain.startswith("autoconfig."): a_expl = "Provides email configuration autodiscovery support for Thunderbird Autoconfig."
 		if domain.startswith("autodiscover."): a_expl = "Provides email configuration autodiscovery support for Z-Push ActiveSync Autodiscover."
 	defaults = [
 		(None,  "A",    env["PUBLIC_IP"], a_expl),
-		(None,  "AAAA", env.get('PUBLIC_IPV6'), "Optional. Sets the IPv6 address that %s resolves to, e.g. for web hosting. (It is not necessary for receiving mail on this domain.)" % domain),
+		(None,  "AAAA", env.get('PUBLIC_IPV6'), f"Optional. Sets the IPv6 address that {domain} resolves to, e.g. for web hosting. (It is not necessary for receiving mail on this domain.)"),
 	]
 	for qname, rtype, value, explanation in defaults:
 		if value is None or value.strip() == "": continue # skip IPV6 if not set
@@ -278,27 +279,27 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 	if domain_properties[domain]["mail"]:
 		# The MX record says where email for the domain should be delivered: Here!
 		if not has_rec(None, "MX", prefix="10 "):
-			records.append((None,  "MX",  "10 %s." % env["PRIMARY_HOSTNAME"], "Required. Specifies the hostname (and priority) of the machine that handles @%s mail." % domain))
+			records.append((None,  "MX",  "10 {}.".format(env["PRIMARY_HOSTNAME"]), f"Required. Specifies the hostname (and priority) of the machine that handles @{domain} mail."))
 
 		# SPF record: Permit the box ('mx', see above) to send mail on behalf of
 		# the domain, and no one else.
 		# Skip if the user has set a custom SPF record.
 		if not has_rec(None, "TXT", prefix="v=spf1 "):
-			records.append((None,  "TXT", 'v=spf1 mx -all', "Recommended. Specifies that only the box is permitted to send @%s mail." % domain))
+			records.append((None,  "TXT", 'v=spf1 mx -all', f"Recommended. Specifies that only the box is permitted to send @{domain} mail."))
 
 		# Append the DKIM TXT record to the zone as generated by OpenDKIM.
 		# Skip if the user has set a DKIM record already.
 		opendkim_record_file = os.path.join(env['STORAGE_ROOT'], 'mail/dkim/mail.txt')
-		with open(opendkim_record_file) as orf:
+		with open(opendkim_record_file, encoding="utf-8") as orf:
 			m = re.match(r'(\S+)\s+IN\s+TXT\s+\( ((?:"[^"]+"\s+)+)\)', orf.read(), re.S)
 			val = "".join(re.findall(r'"([^"]+)"', m.group(2)))
 			if not has_rec(m.group(1), "TXT", prefix="v=DKIM1; "):
-				records.append((m.group(1), "TXT", val, "Recommended. Provides a way for recipients to verify that this machine sent @%s mail." % domain))
+				records.append((m.group(1), "TXT", val, f"Recommended. Provides a way for recipients to verify that this machine sent @{domain} mail."))
 
 		# Append a DMARC record.
 		# Skip if the user has set a DMARC record already.
 		if not has_rec("_dmarc", "TXT", prefix="v=DMARC1; "):
-			records.append(("_dmarc", "TXT", 'v=DMARC1; p=quarantine', "Recommended. Specifies that mail that does not originate from the box but claims to be from @%s or which does not have a valid DKIM signature is suspect and should be quarantined by the recipient's mail system." % domain))
+			records.append(("_dmarc", "TXT", 'v=DMARC1; p=quarantine;', f"Recommended. Specifies that mail that does not originate from the box but claims to be from @{domain} or which does not have a valid DKIM signature is suspect and should be quarantined by the recipient's mail system."))
 
 	if domain_properties[domain]["user"]:
 		# Add CardDAV/CalDAV SRV records on the non-primary hostname that points to the primary hostname
@@ -355,15 +356,15 @@ def build_zone(domain, domain_properties, additional_records, env, is_zone=True)
 	# non-mail domain and also may include qnames from custom DNS records.
 	# Do this once at the end of generating a zone.
 	if is_zone:
-		qnames_with_a = set(qname for (qname, rtype, value, explanation) in records if rtype in ("A", "AAAA"))
+		qnames_with_a = {qname for (qname, rtype, value, explanation) in records if rtype in {"A", "AAAA"}}
-		qnames_with_mx = set(qname for (qname, rtype, value, explanation) in records if rtype == "MX")
+		qnames_with_mx = {qname for (qname, rtype, value, explanation) in records if rtype == "MX"}
 		for qname in qnames_with_a - qnames_with_mx:
 			# Mark this domain as not sending mail with hard-fail SPF and DMARC records.
 			d = (qname+"." if qname else "") + domain
 			if not has_rec(qname, "TXT", prefix="v=spf1 "):
-				records.append((qname,  "TXT", 'v=spf1 -all', "Recommended. Prevents use of this domain name for outbound mail by specifying that no servers are valid sources for mail from @%s. If you do send email from this domain name you should either override this record such that the SPF rule does allow the originating server, or, take the recommended approach and have the box handle mail for this domain (simply add any receiving alias at this domain name to make this machine treat the domain name as one of its mail domains)." % d))
+				records.append((qname,  "TXT", 'v=spf1 -all', f"Recommended. Prevents use of this domain name for outbound mail by specifying that no servers are valid sources for mail from @{d}. If you do send email from this domain name you should either override this record such that the SPF rule does allow the originating server, or, take the recommended approach and have the box handle mail for this domain (simply add any receiving alias at this domain name to make this machine treat the domain name as one of its mail domains)."))
 			if not has_rec("_dmarc" + ("."+qname if qname else ""), "TXT", prefix="v=DMARC1; "):
-				records.append(("_dmarc" + ("."+qname if qname else ""), "TXT", 'v=DMARC1; p=reject', "Recommended. Prevents use of this domain name for outbound mail by specifying that the SPF rule should be honoured for mail from @%s." % d))
+				records.append(("_dmarc" + ("."+qname if qname else ""), "TXT", 'v=DMARC1; p=reject;', f"Recommended. Prevents use of this domain name for outbound mail by specifying that the SPF rule should be honoured for mail from @{d}."))
 
 			# And with a null MX record (https://explained-from-first-principles.com/email/#null-mx-record)
 			if not has_rec(qname, "MX"):
@@ -440,29 +441,24 @@ def build_sshfp_records():
 
 	# Get our local fingerprints by running ssh-keyscan. The output looks
 	# like the known_hosts file: hostname, keytype, fingerprint. The order
-	# of the output is arbitrary, so sort it to prevent spurrious updates
+	# of the output is arbitrary, so sort it to prevent spurious updates
 	# to the zone file (that trigger bumping the serial number). However,
 	# if SSH has been configured to listen on a nonstandard port, we must
 	# specify that port to sshkeyscan.
 
-	port = 22
+	port = get_ssh_port()
-	with open('/etc/ssh/sshd_config', 'r') as f:
-		for line in f:
-			s = line.rstrip().split()
-			if len(s) == 2 and s[0] == 'Port':
-				try:
-					port = int(s[1])
-				except ValueError:
-					pass
-				break
 
-	keys = shell("check_output", ["ssh-keyscan", "-t", "rsa,dsa,ecdsa,ed25519", "-p", str(port), "localhost"])
+	# If nothing returned, SSH is probably not installed.
+	if not port:
+		return
+
+	keys = shell("check_output", ["ssh-keyscan", "-4", "-t", "rsa,dsa,ecdsa,ed25519", "-p", str(port), "localhost"])
 	keys = sorted(keys.split("\n"))
 
 	for key in keys:
 		if key.strip() == "" or key[0] == "#": continue
 		try:
-			host, keytype, pubkey = key.split(" ")
+			_host, keytype, pubkey = key.split(" ")
 			yield "%d %d ( %s )" % (
 				algorithm_number[keytype],
 				2, # specifies we are using SHA-256 on next line
@@ -484,7 +480,7 @@ def write_nsd_zone(domain, zonefile, records, env, force):
 	# @ the PRIMARY_HOSTNAME. Hopefully that's legit.
 	#
 	# For the refresh through TTL fields, a good reference is:
-	# http://www.peerwisdom.org/2013/05/15/dns-understanding-the-soa-record/
+	# https://www.ripe.net/publications/docs/ripe-203
 	#
 	# A hash of the available DNSSEC keys are added in a comment so that when
 	# the keys change we force a re-generation of the zone which triggers
@@ -497,7 +493,7 @@ $TTL 86400          ; default time to live
 @ IN SOA ns1.{primary_domain}. hostmaster.{primary_domain}. (
            __SERIAL__     ; serial number
            7200     ; Refresh (secondary nameserver update interval)
-           86400    ; Retry (when refresh fails, how often to try again)
+           3600     ; Retry (when refresh fails, how often to try again, should be lower than the refresh)
            1209600  ; Expire (when refresh fails, how long secondary nameserver will keep records around anyway)
            86400    ; Negative TTL (how long negative responses are cached)
            )
@@ -507,7 +503,7 @@ $TTL 86400          ; default time to live
 	zone = zone.format(domain=domain, primary_domain=env["PRIMARY_HOSTNAME"])
 
 	# Add records.
-	for subdomain, querytype, value, explanation in records:
+	for subdomain, querytype, value, _explanation in records:
 		if subdomain:
 			zone += subdomain
 		zone += "\tIN\t" + querytype + "\t"
@@ -525,7 +521,7 @@ $TTL 86400          ; default time to live
 		zone += value + "\n"
 
 	# Append a stable hash of DNSSEC signing keys in a comment.
-	zone += "\n; DNSSEC signing keys hash: {}\n".format(hash_dnssec_keys(domain, env))
+	zone += f"\n; DNSSEC signing keys hash: {hash_dnssec_keys(domain, env)}\n"
 
 	# DNSSEC requires re-signing a zone periodically. That requires
 	# bumping the serial number even if no other records have changed.
@@ -541,7 +537,7 @@ $TTL 86400          ; default time to live
 		# We've signed the domain. Check if we are close to the expiration
 		# time of the signature. If so, we'll force a bump of the serial
 		# number so we can re-sign it.
-		with open(zonefile + ".signed") as f:
+		with open(zonefile + ".signed", encoding="utf-8") as f:
 			signed_zone = f.read()
 		expiration_times = re.findall(r"\sRRSIG\s+SOA\s+\d+\s+\d+\s\d+\s+(\d{14})", signed_zone)
 		if len(expiration_times) == 0:
@@ -560,7 +556,7 @@ $TTL 86400          ; default time to live
 	if os.path.exists(zonefile):
 		# If the zone already exists, is different, and has a later serial number,
 		# increment the number.
-		with open(zonefile) as f:
+		with open(zonefile, encoding="utf-8") as f:
 			existing_zone = f.read()
 			m = re.search(r"(\d+)\s*;\s*serial number", existing_zone)
 			if m:
@@ -584,7 +580,7 @@ $TTL 86400          ; default time to live
 	zone = zone.replace("__SERIAL__", serial)
 
 	# Write the zone file.
-	with open(zonefile, "w") as f:
+	with open(zonefile, "w", encoding="utf-8") as f:
 		f.write(zone)
 
 	return True # file is updated
@@ -594,44 +590,45 @@ def get_dns_zonefile(zone, env):
 		if zone == domain:
 			break
 	else:
-		raise ValueError("%s is not a domain name that corresponds to a zone." % zone)
+		msg = f"{zone} is not a domain name that corresponds to a zone."
+		raise ValueError(msg)
 
 	nsd_zonefile = "/etc/nsd/zones/" + fn
-	with open(nsd_zonefile, "r") as f:
+	with open(nsd_zonefile, encoding="utf-8") as f:
 		return f.read()
 
 ########################################################################
 
 def write_nsd_conf(zonefiles, additional_records, env):
 	# Write the list of zones to a configuration file.
-	nsd_conf_file = "/etc/nsd/zones.conf"
+	nsd_conf_file = "/etc/nsd/nsd.conf.d/zones.conf"
 	nsdconf = ""
 
 	# Append the zones.
 	for domain, zonefile in zonefiles:
-		nsdconf += """
+		nsdconf += f"""
 zone:
-	name: %s
+	name: {domain}
-	zonefile: %s
+	zonefile: {zonefile}
-""" % (domain, zonefile)
+"""
 
 		# If custom secondary nameservers have been set, allow zone transfers
 		# and, if not a subnet, notifies to them.
 		for ipaddr in get_secondary_dns(additional_records, mode="xfr"):
 			if "/" not in ipaddr:
-				nsdconf += "\n\tnotify: %s NOKEY" % (ipaddr)
+				nsdconf += f"\n\tnotify: {ipaddr} NOKEY"
-			nsdconf += "\n\tprovide-xfr: %s NOKEY\n" % (ipaddr)
+			nsdconf += f"\n\tprovide-xfr: {ipaddr} NOKEY\n"
 
 	# Check if the file is changing. If it isn't changing,
 	# return False to flag that no change was made.
 	if os.path.exists(nsd_conf_file):
-		with open(nsd_conf_file) as f:
+		with open(nsd_conf_file, encoding="utf-8") as f:
 			if f.read() == nsdconf:
 				return False
 
 	# Write out new contents and return True to signal that
 	# configuration changed.
-	with open(nsd_conf_file, "w") as f:
+	with open(nsd_conf_file, "w", encoding="utf-8") as f:
 		f.write(nsdconf)
 	return True
 
@@ -665,9 +662,8 @@ def hash_dnssec_keys(domain, env):
 	keydata = []
 	for keytype, keyfn in sorted(find_dnssec_signing_keys(domain, env)):
 		oldkeyfn = os.path.join(env['STORAGE_ROOT'], 'dns/dnssec', keyfn + ".private")
-		keydata.append(keytype)
+		keydata.extend((keytype, keyfn))
-		keydata.append(keyfn)
+		with open(oldkeyfn, encoding="utf-8") as fr:
-		with open(oldkeyfn, "r") as fr:
 			keydata.append( fr.read() )
 	keydata = "".join(keydata).encode("utf8")
 	return hashlib.sha1(keydata).hexdigest()
@@ -695,12 +691,12 @@ def sign_zone(domain, zonefile, env):
 			# Use os.umask and open().write() to securely create a copy that only
 			# we (root) can read.
 			oldkeyfn = os.path.join(env['STORAGE_ROOT'], 'dns/dnssec', keyfn + ext)
-			with open(oldkeyfn, "r") as fr:
+			with open(oldkeyfn, encoding="utf-8") as fr:
 				keydata = fr.read()
 			keydata = keydata.replace("_domain_", domain)
 			prev_umask = os.umask(0o77) # ensure written file is not world-readable
 			try:
-				with open(newkeyfn + ext, "w") as fw:
+				with open(newkeyfn + ext, "w", encoding="utf-8") as fw:
 					fw.write(keydata)
 			finally:
 				os.umask(prev_umask) # other files we write should be world-readable
@@ -720,9 +716,9 @@ def sign_zone(domain, zonefile, env):
 
 		# zonefile to sign
 		"/etc/nsd/zones/" + zonefile,
-	]
 		# keys to sign with (order doesn't matter -- it'll figure it out)
-		+ all_keys
+		*all_keys
+	]
 	)
 
 	# Create a DS record based on the patched-up key files. The DS record is specific to the
@@ -734,7 +730,7 @@ def sign_zone(domain, zonefile, env):
 	# be used, so we'll pre-generate all for each key. One DS record per line. Only one
 	# needs to actually be deployed at the registrar. We'll select the preferred one
 	# in the status checks.
-	with open("/etc/nsd/zones/" + zonefile + ".ds", "w") as f:
+	with open("/etc/nsd/zones/" + zonefile + ".ds", "w", encoding="utf-8") as f:
 		for key in ksk_keys:
 			for digest_type in ('1', '2', '4'):
 				rr_ds = shell('check_output', ["/usr/bin/ldns-key2ds",
@@ -771,7 +767,7 @@ def write_opendkim_tables(domains, env):
 		# So we must have a separate KeyTable entry for each domain.
 		"SigningTable":
 			"".join(
-				"*@{domain} {domain}\n".format(domain=domain)
+				f"*@{domain} {domain}\n"
 				for domain in domains
 			),
 
@@ -780,7 +776,7 @@ def write_opendkim_tables(domains, env):
 		# signing domain must match the sender's From: domain.
 		"KeyTable":
 			"".join(
-				"{domain} {domain}:mail:{key_file}\n".format(domain=domain, key_file=opendkim_key_file)
+				f"{domain} {domain}:mail:{opendkim_key_file}\n"
 				for domain in domains
 			),
 	}
@@ -789,12 +785,12 @@ def write_opendkim_tables(domains, env):
 	for filename, content in config.items():
 		# Don't write the file if it doesn't need an update.
 		if os.path.exists("/etc/opendkim/" + filename):
-			with open("/etc/opendkim/" + filename) as f:
+			with open("/etc/opendkim/" + filename, encoding="utf-8") as f:
 				if f.read() == content:
 					continue
 
 		# The contents needs to change.
-		with open("/etc/opendkim/" + filename, "w") as f:
+		with open("/etc/opendkim/" + filename, "w", encoding="utf-8") as f:
 			f.write(content)
 		did_update = True
 
@@ -806,8 +802,9 @@ def write_opendkim_tables(domains, env):
 
 def get_custom_dns_config(env, only_real_records=False):
 	try:
-		custom_dns = rtyaml.load(open(os.path.join(env['STORAGE_ROOT'], 'dns/custom.yaml')))
+		with open(os.path.join(env['STORAGE_ROOT'], 'dns/custom.yaml'), encoding="utf-8") as f:
-		if not isinstance(custom_dns, dict): raise ValueError() # caught below
+			custom_dns = rtyaml.load(f)
+		if not isinstance(custom_dns, dict): raise ValueError # caught below
 	except:
 		return [ ]
 
@@ -825,7 +822,7 @@ def get_custom_dns_config(env, only_real_records=False):
 
 		# No other type of data is allowed.
 		else:
-			raise ValueError()
+			raise ValueError
 
 		for rtype, value2 in values:
 			if isinstance(value2, str):
@@ -835,7 +832,7 @@ def get_custom_dns_config(env, only_real_records=False):
 					yield (qname, rtype, value3)
 			# No other type of data is allowed.
 			else:
-				raise ValueError()
+				raise ValueError
 
 def filter_custom_records(domain, custom_dns_iter):
 	for qname, rtype, value in custom_dns_iter:
@@ -851,10 +848,7 @@ def filter_custom_records(domain, custom_dns_iter):
 		# our short form (None => domain, or a relative QNAME) if
 		# domain is not None.
 		if domain is not None:
-			if qname == domain:
+			qname = None if qname == domain else qname[0:len(qname) - len("." + domain)]
-				qname = None
-			else:
-				qname = qname[0:len(qname)-len("." + domain)]
 
 		yield (qname, rtype, value)
 
@@ -890,12 +884,12 @@ def write_custom_dns_config(config, env):
 
 	# Write.
 	config_yaml = rtyaml.dump(dns)
-	with open(os.path.join(env['STORAGE_ROOT'], 'dns/custom.yaml'), "w") as f:
+	with open(os.path.join(env['STORAGE_ROOT'], 'dns/custom.yaml'), "w", encoding="utf-8") as f:
 		f.write(config_yaml)
 
 def set_custom_dns_record(qname, rtype, value, action, env):
 	# validate qname
-	for zone, fn in get_dns_zones(env):
+	for zone, _fn in get_dns_zones(env):
 		# It must match a zone apex or be a subdomain of a zone
 		# that we are otherwise hosting.
 		if qname == zone or qname.endswith("."+zone):
@@ -903,34 +897,39 @@ def set_custom_dns_record(qname, rtype, value, action, env):
 	else:
 		# No match.
 		if qname != "_secondary_nameserver":
-			raise ValueError("%s is not a domain name or a subdomain of a domain name managed by this box." % qname)
+			msg = f"{qname} is not a domain name or a subdomain of a domain name managed by this box."
+			raise ValueError(msg)
 
 	# validate rtype
 	rtype = rtype.upper()
 	if value is not None and qname != "_secondary_nameserver":
 		if not re.search(DOMAIN_RE, qname):
-			raise ValueError("Invalid name.")
+			msg = "Invalid name."
+			raise ValueError(msg)
 
-		if rtype in ("A", "AAAA"):
+		if rtype in {"A", "AAAA"}:
 			if value != "local": # "local" is a special flag for us
 				v = ipaddress.ip_address(value) # raises a ValueError if there's a problem
 				if rtype == "A" and not isinstance(v, ipaddress.IPv4Address): raise ValueError("That's an IPv6 address.")
 				if rtype == "AAAA" and not isinstance(v, ipaddress.IPv6Address): raise ValueError("That's an IPv4 address.")
-		elif rtype in ("CNAME", "NS"):
+		elif rtype in {"CNAME", "NS"}:
 			if rtype == "NS" and qname == zone:
-				raise ValueError("NS records can only be set for subdomains.")
+				msg = "NS records can only be set for subdomains."
+				raise ValueError(msg)
 
 			# ensure value has a trailing dot
 			if not value.endswith("."):
-				value = value + "."
+				value += "."
 
 			if not re.search(DOMAIN_RE, value):
-				raise ValueError("Invalid value.")
+				msg = "Invalid value."
-		elif rtype in ("CNAME", "TXT", "SRV", "MX", "SSHFP", "CAA"):
+				raise ValueError(msg)
+		elif rtype in {"CNAME", "TXT", "SRV", "MX", "SSHFP", "CAA"}:
 			# anything goes
 			pass
 		else:
-			raise ValueError("Unknown record type '%s'." % rtype)
+			msg = f"Unknown record type '{rtype}'."
+			raise ValueError(msg)
 
 	# load existing config
 	config = list(get_custom_dns_config(env))
@@ -959,7 +958,7 @@ def set_custom_dns_record(qname, rtype, value, action, env):
 				# Drop this record.
 				made_change = True
 				continue
-			if value == None and (_qname, _rtype) == (qname, rtype):
+			if value is None and (_qname, _rtype) == (qname, rtype):
 				# Drop all qname-rtype records.
 				made_change = True
 				continue
@@ -969,7 +968,7 @@ def set_custom_dns_record(qname, rtype, value, action, env):
 		# Preserve this record.
 		newconfig.append((_qname, _rtype, _value))
 
-	if action in ("add", "set") and needs_add and value is not None:
+	if action in {"add", "set"} and needs_add and value is not None:
 		newconfig.append((qname, rtype, value))
 		made_change = True
 
@@ -983,36 +982,45 @@ def set_custom_dns_record(qname, rtype, value, action, env):
 def get_secondary_dns(custom_dns, mode=None):
 	resolver = dns.resolver.get_default_resolver()
 	resolver.timeout = 10
+	resolver.lifetime = 10
 
 	values = []
-	for qname, rtype, value in custom_dns:
+	for qname, _rtype, value in custom_dns:
 		if qname != '_secondary_nameserver': continue
 		for hostname in value.split(" "):
 			hostname = hostname.strip()
-			if mode == None:
+			if mode is None:
 				# Just return the setting.
 				values.append(hostname)
 				continue
 
-			# This is a hostname. Before including in zone xfr lines,
+			# If the entry starts with "xfr:" only include it in the zone transfer settings.
-			# resolve to an IP address. Otherwise just return the hostname.
+			if hostname.startswith("xfr:"):
-			# It may not resolve to IPv6, so don't throw an exception if it
+				if mode != "xfr": continue
-			# doesn't.
+				hostname = hostname[4:]
-			if not hostname.startswith("xfr:"):
-				if mode == "xfr":
-					response = dns.resolver.query(hostname+'.', "A", raise_on_no_answer=False)
-					values.extend(map(str, response))
-					response = dns.resolver.query(hostname+'.', "AAAA", raise_on_no_answer=False)
-					values.extend(map(str, response))
-					continue
-				values.append(hostname)
 
-			# This is a zone-xfer-only IP address. Do not return if
+			# If is a hostname, before including in zone xfr lines,
-			# we're querying for NS record hostnames. Only return if
+			# resolve to an IP address.
-			# we're querying for zone xfer IP addresses - return the
+			# It may not resolve to IPv6, so don't throw an exception if it
-			# IP address.
+			# doesn't. Skip the entry if there is a DNS error.
-			elif mode == "xfr":
+			if mode == "xfr":
-				values.append(hostname[4:])
+				try:
+					ipaddress.ip_interface(hostname) # test if it's an IP address or CIDR notation
+					values.append(hostname)
+				except ValueError:
+					try:
+						response = dns.resolver.resolve(hostname+'.', "A", raise_on_no_answer=False)
+						values.extend(map(str, response))
+					except dns.exception.DNSException:
+						pass
+					try:
+						response = dns.resolver.resolve(hostname+'.', "AAAA", raise_on_no_answer=False)
+						values.extend(map(str, response))
+					except dns.exception.DNSException:
+						pass
+
+			else:
+				values.append(hostname)
 
 	return values
 
@@ -1021,25 +1029,29 @@ def set_secondary_dns(hostnames, env):
 		# Validate that all hostnames are valid and that all zone-xfer IP addresses are valid.
 		resolver = dns.resolver.get_default_resolver()
 		resolver.timeout = 5
+		resolver.lifetime = 5
+
 		for item in hostnames:
 			if not item.startswith("xfr:"):
 				# Resolve hostname.
 				try:
-					response = resolver.query(item, "A")
+					resolver.resolve(item, "A")
-				except (dns.resolver.NoNameservers, dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
+				except (dns.resolver.NoNameservers, dns.resolver.NXDOMAIN, dns.resolver.NoAnswer, dns.resolver.Timeout):
 					try:
-						response = resolver.query(item, "AAAA")
+						resolver.resolve(item, "AAAA")
-					except (dns.resolver.NoNameservers, dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
+					except (dns.resolver.NoNameservers, dns.resolver.NXDOMAIN, dns.resolver.NoAnswer, dns.resolver.Timeout):
-						raise ValueError("Could not resolve the IP address of %s." % item)
+						msg = f"Could not resolve the IP address of {item}."
+						raise ValueError(msg)
 			else:
 				# Validate IP address.
 				try:
 					if "/" in item[4:]:
-						v = ipaddress.ip_network(item[4:]) # raises a ValueError if there's a problem
+						ipaddress.ip_network(item[4:]) # raises a ValueError if there's a problem
 					else:
-						v = ipaddress.ip_address(item[4:]) # raises a ValueError if there's a problem
+						ipaddress.ip_address(item[4:]) # raises a ValueError if there's a problem
 				except ValueError:
-					raise ValueError("'%s' is not an IPv4 or IPv6 address or subnet." % item[4:])
+					msg = f"'{item[4:]}' is not an IPv4 or IPv6 address or subnet."
+					raise ValueError(msg)
 
 		# Set.
 		set_custom_dns_record("_secondary_nameserver", "A", " ".join(hostnames), "set", env)
@@ -1055,14 +1067,13 @@ def get_custom_dns_records(custom_dns, qname, rtype):
 	for qname1, rtype1, value in custom_dns:
 		if qname1 == qname and rtype1 == rtype:
 			yield value
-	return None
 
 ########################################################################
 
 def build_recommended_dns(env):
 	ret = []
-	for (domain, zonefile, records) in build_zones(env):
+	for (domain, _zonefile, records) in build_zones(env):
-		# remove records that we don't dislay
+		# remove records that we don't display
 		records = [r for r in records if r[3] is not False]
 
 		# put Required at the top, then Recommended, then everythiing else
@@ -1070,10 +1081,7 @@ def build_recommended_dns(env):
 
 		# expand qnames
 		for i in range(len(records)):
-			if records[i][0] == None:
+			qname = domain if records[i][0] is None else records[i][0] + "." + domain
-				qname = domain
-			else:
-				qname = records[i][0] + "." + domain
 
 			records[i] = {
 				"qname": qname,
@@ -1091,8 +1099,10 @@ if __name__ == "__main__":
 	env = load_environment()
 	if sys.argv[-1] == "--lint":
 		write_custom_dns_config(get_custom_dns_config(env), env)
+	elif sys.argv[-1] == "--update":
+		do_dns_update(env, force=True)
 	else:
-		for zone, records in build_recommended_dns(env):
+		for _zone, records in build_recommended_dns(env):
 			for record in records:
 				print("; " + record['explanation'])
 				print(record['qname'], record['rtype'], record['value'], sep="\t")

management/email_administrator.py

@@ -29,7 +29,7 @@ content = sys.stdin.read().strip()
 
 # If there's nothing coming in, just exit.
 if content == "":
-	sys.exit(0)
+    sys.exit(0)
 
 # create MIME message
 msg = MIMEMultipart('alternative')
@@ -37,11 +37,11 @@ msg = MIMEMultipart('alternative')
 # In Python 3.6:
 #msg = Message()
 
-msg['From'] = "\"%s\" <%s>" % (env['PRIMARY_HOSTNAME'], admin_addr)
+msg['From'] = '"{}" <{}>'.format(env['PRIMARY_HOSTNAME'], admin_addr)
 msg['To'] = admin_addr
-msg['Subject'] = "[%s] %s" % (env['PRIMARY_HOSTNAME'], subject)
+msg['Subject'] = "[{}] {}".format(env['PRIMARY_HOSTNAME'], subject)
 
-content_html = "<html><body><pre>{}</pre></body></html>".format(html.escape(content))
+content_html = f'<html><body><pre style="overflow-x: scroll; white-space: pre;">{html.escape(content)}</pre></body></html>'
 
 msg.attach(MIMEText(content, 'plain'))
 msg.attach(MIMEText(content_html, 'html'))

management/mail_log.py

@@ -71,9 +71,10 @@ def scan_files(collector):
 
         if not os.path.exists(fn):
             continue
-        elif fn[-3:] == '.gz':
+        if fn[-3:] == '.gz':
             tmp_file = tempfile.NamedTemporaryFile()
-            shutil.copyfileobj(gzip.open(fn), tmp_file)
+            with gzip.open(fn, 'rb') as f:
+                shutil.copyfileobj(f, tmp_file)
 
         if VERBOSE:
             print("Processing file", fn, "...")
@@ -115,12 +116,11 @@ def scan_mail_log(env):
     try:
         import mailconfig
         collector["known_addresses"] = (set(mailconfig.get_mail_users(env)) |
-                                        set(alias[0] for alias in mailconfig.get_mail_aliases(env)))
+                                        {alias[0] for alias in mailconfig.get_mail_aliases(env)})
     except ImportError:
         pass
 
-    print("Scanning logs from {:%Y-%m-%d %H:%M:%S} to {:%Y-%m-%d %H:%M:%S}".format(
+    print(f"Scanning logs from {START_DATE:%Y-%m-%d %H:%M:%S} to {END_DATE:%Y-%m-%d %H:%M:%S}"
-        START_DATE, END_DATE)
     )
 
     # Scan the lines in the log files until the date goes out of range
@@ -226,7 +226,7 @@ def scan_mail_log(env):
             ],
             sub_data=[
                 ("Protocol and Source", [[
-                    "{} {}: {} times".format(protocol_name, host, count)
+                    f"{protocol_name} {host}: {count} times"
                     for (protocol_name, host), count
                     in sorted(u["totals_by_protocol_and_host"].items(), key=lambda kv:-kv[1])
                   ] for u in data.values()])
@@ -302,8 +302,7 @@ def scan_mail_log(env):
                 for date, sender, message in user_data["blocked"]:
                     if len(sender) > 64:
                         sender = sender[:32] + "…" + sender[-32:]
-                    user_rejects.append("%s - %s " % (date, sender))
+                    user_rejects.extend((f'{date} - {sender} ', f'  {message}'))
-                    user_rejects.append("  %s" % message)
                 rejects.append(user_rejects)
 
         print_user_table(
@@ -320,8 +319,8 @@ def scan_mail_log(env):
 
     if collector["other-services"] and VERBOSE and False:
         print_header("Other services")
-        print("The following unkown services were found in the log file.")
+        print("The following unknown services were found in the log file.")
-        print(" ", *sorted(list(collector["other-services"])), sep='\n│ ')
+        print(" ", *sorted(collector["other-services"]), sep='\n│ ')
 
 
 def scan_mail_log_line(line, collector):
@@ -332,7 +331,7 @@ def scan_mail_log_line(line, collector):
     if not m:
         return True
 
-    date, system, service, log = m.groups()
+    date, _system, service, log = m.groups()
     collector["scan_count"] += 1
 
     # print()
@@ -343,7 +342,7 @@ def scan_mail_log_line(line, collector):
 
     # Replaced the dateutil parser for a less clever way of parser that is roughly 4 times faster.
     # date = dateutil.parser.parse(date)
-    
+
     # strptime fails on Feb 29 with ValueError: day is out of range for month if correct year is not provided.
     # See https://bugs.python.org/issue26460
     date = datetime.datetime.strptime(str(NOW.year) + ' ' + date, '%Y %b %d %H:%M:%S')
@@ -356,7 +355,7 @@ def scan_mail_log_line(line, collector):
     if date > END_DATE:
         # Don't process, and halt
         return False
-    elif date < START_DATE:
+    if date < START_DATE:
         # Don't process, but continue
         return True
 
@@ -375,9 +374,9 @@ def scan_mail_log_line(line, collector):
     elif service == "postfix/smtpd":
         if SCAN_BLOCKED:
             scan_postfix_smtpd_line(date, log, collector)
-    elif service in ("postfix/qmgr", "postfix/pickup", "postfix/cleanup", "postfix/scache",
+    elif service in {"postfix/qmgr", "postfix/pickup", "postfix/cleanup", "postfix/scache",
                      "spampd", "postfix/anvil", "postfix/master", "opendkim", "postfix/lmtp",
-                     "postfix/tlsmgr", "anvil"):
+                     "postfix/tlsmgr", "anvil"}:
         # nothing to look at
         return True
     else:
@@ -391,8 +390,8 @@ def scan_mail_log_line(line, collector):
 def scan_postgrey_line(date, log, collector):
     """ Scan a postgrey log line and extract interesting data """
 
-    m = re.match("action=(greylist|pass), reason=(.*?), (?:delay=\d+, )?client_name=(.*), "
+    m = re.match(r"action=(greylist|pass), reason=(.*?), (?:delay=\d+, )?client_name=(.*), "
-                 "client_address=(.*), sender=(.*), recipient=(.*)",
+                 r"client_address=(.*), sender=(.*), recipient=(.*)",
                  log)
 
     if m:
@@ -424,7 +423,7 @@ def scan_postfix_smtpd_line(date, log, collector):
 
     # Check if the incoming mail was rejected
 
-    m = re.match("NOQUEUE: reject: RCPT from .*?: (.*?); from=<(.*?)> to=<(.*?)>", log)
+    m = re.match(r"NOQUEUE: reject: RCPT from .*?: (.*?); from=<(.*?)> to=<(.*?)>", log)
 
     if m:
         message, sender, user = m.groups()
@@ -434,42 +433,41 @@ def scan_postfix_smtpd_line(date, log, collector):
             return
 
         # only log mail to known recipients
-        if user_match(user):
+        if user_match(user) and (collector["known_addresses"] is None or user in collector["known_addresses"]):
-            if collector["known_addresses"] is None or user in collector["known_addresses"]:
+            data = collector["rejected"].get(
-                data = collector["rejected"].get(
+                user,
-                    user,
+                {
-                    {
+                    "blocked": [],
-                        "blocked": [],
+                    "earliest": None,
-                        "earliest": None,
+                    "latest": None,
-                        "latest": None,
+                }
-                    }
+            )
-                )
+            # simplify this one
-                # simplify this one
+            m = re.search(
+                r"Client host \[(.*?)\] blocked using zen.spamhaus.org; (.*)", message
+            )
+            if m:
+                message = "ip blocked: " + m.group(2)
+            else:
+                # simplify this one too
                 m = re.search(
-                    r"Client host \[(.*?)\] blocked using zen.spamhaus.org; (.*)", message
+                    r"Sender address \[.*@(.*)\] blocked using dbl.spamhaus.org; (.*)", message
                 )
                 if m:
-                    message = "ip blocked: " + m.group(2)
+                    message = "domain blocked: " + m.group(2)
-                else:
-                    # simplify this one too
-                    m = re.search(
-                        r"Sender address \[.*@(.*)\] blocked using dbl.spamhaus.org; (.*)", message
-                    )
-                    if m:
-                        message = "domain blocked: " + m.group(2)
 
-                if data["earliest"] is None:
+            if data["earliest"] is None:
-                    data["earliest"] = date
+                data["earliest"] = date
-                data["latest"] = date
+            data["latest"] = date
-                data["blocked"].append((date, sender, message))
+            data["blocked"].append((date, sender, message))
 
-                collector["rejected"][user] = data
+            collector["rejected"][user] = data
 
 
 def scan_dovecot_login_line(date, log, collector, protocol_name):
     """ Scan a dovecot login log line and extract interesting data """
 
-    m = re.match("Info: Login: user=<(.*?)>, method=PLAIN, rip=(.*?),", log)
+    m = re.match(r"Info: Login: user=<(.*?)>, method=PLAIN, rip=(.*?),", log)
 
     if m:
         # TODO: CHECK DIT
@@ -497,9 +495,9 @@ def add_login(user, date, protocol_name, host, collector):
             data["latest"] = date
 
             data["totals_by_protocol"][protocol_name] += 1
-            data["totals_by_protocol_and_host"][(protocol_name, host)] += 1
+            data["totals_by_protocol_and_host"][protocol_name, host] += 1
 
-            if host not in ("127.0.0.1", "::1") or True:
+            if host not in {"127.0.0.1", "::1"} or True:
                 data["activity-by-hour"][protocol_name][date.hour] += 1
 
             collector["logins"][user] = data
@@ -513,7 +511,7 @@ def scan_postfix_lmtp_line(date, log, collector):
 
     """
 
-    m = re.match("([A-Z0-9]+): to=<(\S+)>, .* Saved", log)
+    m = re.match(r"([A-Z0-9]+): to=<(\S+)>, .* Saved", log)
 
     if m:
         _, user = m.groups()
@@ -549,11 +547,12 @@ def scan_postfix_submission_line(date, log, collector):
     """
 
     # Match both the 'plain' and 'login' sasl methods, since both authentication methods are
-    # allowed by Dovecot
+    # allowed by Dovecot. Exclude trailing comma after the username when additional fields
-    m = re.match("([A-Z0-9]+): client=(\S+), sasl_method=(PLAIN|LOGIN), sasl_username=(\S+)", log)
+	# follow after.
+    m = re.match(r"([A-Z0-9]+): client=(\S+), sasl_method=(PLAIN|LOGIN), sasl_username=(\S+)(?<!,)", log)
 
     if m:
-        _, client, method, user = m.groups()
+        _, client, _method, user = m.groups()
 
         if user_match(user):
             # Get the user data, or create it if the user is new
@@ -586,7 +585,7 @@ def scan_postfix_submission_line(date, log, collector):
 def readline(filename):
     """ A generator that returns the lines of a file
     """
-    with open(filename) as file:
+    with open(filename, errors='replace', encoding='utf-8') as file:
         while True:
           line = file.readline()
           if not line:
@@ -609,7 +608,8 @@ def valid_date(string):
     try:
         date = dateutil.parser.parse(string)
     except ValueError:
-        raise argparse.ArgumentTypeError("Unrecognized date and/or time '%s'" % string)
+        msg = f"Unrecognized date and/or time '{string}'"
+        raise argparse.ArgumentTypeError(msg)
     return date
 
 
@@ -620,10 +620,7 @@ def print_time_table(labels, data, do_print=True):
     data.insert(0, [str(h) for h in range(24)])
 
     temp = "│ {:<%d} " % max(len(l) for l in labels)
-    lines = []
+    lines = [temp.format(label) for label in labels]
-
-    for label in labels:
-        lines.append(temp.format(label))
 
     for h in range(24):
         max_len = max(len(str(d[h])) for d in data)
@@ -637,8 +634,8 @@ def print_time_table(labels, data, do_print=True):
 
     if do_print:
         print("\n".join(lines))
-    else:
+        return None
-        return lines
+    return lines
 
 
 def print_user_table(users, data=None, sub_data=None, activity=None, latest=None, earliest=None,
@@ -670,10 +667,10 @@ def print_user_table(users, data=None, sub_data=None, activity=None, latest=None
                 col_str = str_temp.format(d[row][:31] + "…" if len(d[row]) > 32 else d[row])
                 col_left[col] = True
             elif isinstance(d[row], datetime.datetime):
-                col_str = "{:<20}".format(str(d[row]))
+                col_str = f"{d[row]!s:<20}"
                 col_left[col] = True
             else:
-                temp = "{:>%s}" % max(5, len(l) + 1, len(str(d[row])) + 1)
+                temp = f"{{:>{max(5, len(l) + 1, len(str(d[row])) + 1)}}}"
                 col_str = temp.format(str(d[row]))
             col_widths[col] = max(col_widths[col], len(col_str))
             line += col_str
@@ -682,7 +679,7 @@ def print_user_table(users, data=None, sub_data=None, activity=None, latest=None
                 data_accum[col] += d[row]
 
         try:
-            if None not in [latest, earliest]:
+            if None not in [latest, earliest]: # noqa: PLR6201
                 vert_pos = len(line)
                 e = earliest[row]
                 l = latest[row]
@@ -710,13 +707,10 @@ def print_user_table(users, data=None, sub_data=None, activity=None, latest=None
                 if sub_data is not None:
                     for l, d in sub_data:
                         if d[row]:
-                            lines.append("┬")
+                            lines.extend(('┬', f'│ {l}', '├─%s─' % (len(l) * '─'), '│'))
-                            lines.append("│ %s" % l)
-                            lines.append("├─%s─" % (len(l) * "─"))
-                            lines.append("│")
                             max_len = 0
                             for v in list(d[row]):
-                                lines.append("│ %s" % v)
+                                lines.append(f"│ {v}")
                                 max_len = max(max_len, len(v))
                             lines.append("└" + (max_len + 1) * "─")
 
@@ -738,7 +732,7 @@ def print_user_table(users, data=None, sub_data=None, activity=None, latest=None
         else:
             header += l.rjust(max(5, len(l) + 1, col_widths[col]))
 
-    if None not in (latest, earliest):
+    if None not in [latest, earliest]: # noqa: PLR6201
         header += " │ timespan   "
 
     lines.insert(0, header.rstrip())
@@ -763,7 +757,7 @@ def print_user_table(users, data=None, sub_data=None, activity=None, latest=None
         footer += temp.format(data_accum[row])
 
     try:
-        if None not in [latest, earliest]:
+        if None not in [latest, earliest]: # noqa: PLR6201
             max_l = max(latest)
             min_e = min(earliest)
             timespan = relativedelta(max_l, min_e)
@@ -842,7 +836,7 @@ if __name__ == "__main__":
         END_DATE = args.enddate
         if args.timespan == 'today':
             args.timespan = 'day'
-        print("Setting end date to {}".format(END_DATE))
+        print(f"Setting end date to {END_DATE}")
 
     START_DATE = END_DATE - TIME_DELTAS[args.timespan]
 

management/mailconfig.py

@@ -9,15 +9,17 @@
 # Python 3 in setup/questions.sh to validate the email
 # address entered by the user.
 
-import subprocess, shutil, os, sqlite3, re
+import os, sqlite3, re
+
 import utils
 from email_validator import validate_email as validate_email_, EmailNotValidError
 import idna
+import operator
 
 def validate_email(email, mode=None):
 	# Checks that an email address is syntactically valid. Returns True/False.
-	# Until Postfix supports SMTPUTF8, an email address may contain ASCII
+	# An email address may contain ASCII characters only because Dovecot's
-	# characters only; IDNs must be IDNA-encoded.
+	# authentication mechanism gets confused with other character encodings.
 	#
 	# When mode=="user", we're checking that this can be a user account name.
 	# Dovecot has tighter restrictions - letters, numbers, underscore, and
@@ -86,17 +88,13 @@ def prettify_idn_email_address(email):
 
 def is_dcv_address(email):
 	email = email.lower()
-	for localpart in ("admin", "administrator", "postmaster", "hostmaster", "webmaster", "abuse"):
+	return any(email.startswith((localpart + "@", localpart + "+")) for localpart in ("admin", "administrator", "postmaster", "hostmaster", "webmaster", "abuse"))
-		if email.startswith(localpart+"@") or email.startswith(localpart+"+"):
-			return True
-	return False
 
 def open_database(env, with_connection=False):
 	conn = sqlite3.connect(env["STORAGE_ROOT"] + "/mail/users.sqlite")
 	if not with_connection:
 		return conn.cursor()
-	else:
+	return conn, conn.cursor()
-		return conn, conn.cursor()
 
 def get_mail_users(env):
 	# Returns a flat, sorted list of all user accounts.
@@ -105,6 +103,17 @@ def get_mail_users(env):
 	users = [ row[0] for row in c.fetchall() ]
 	return utils.sort_email_addresses(users, env)
 
+def sizeof_fmt(num):
+	for unit in ['','K','M','G','T']:
+		if abs(num) < 1024.0:
+			if abs(num) > 99:
+				return f"{num:3.0f}{unit}"
+			return f"{num:2.1f}{unit}"
+
+		num /= 1024.0
+
+	return str(num)
+
 def get_mail_users_ex(env, with_archived=False):
 	# Returns a complex data structure of all user accounts, optionally
 	# including archived (status="inactive") accounts.
@@ -128,13 +137,42 @@ def get_mail_users_ex(env, with_archived=False):
 	users = []
 	active_accounts = set()
 	c = open_database(env)
-	c.execute('SELECT email, privileges FROM users')
+	c.execute('SELECT email, privileges, quota FROM users')
-	for email, privileges in c.fetchall():
+	for email, privileges, quota in c.fetchall():
 		active_accounts.add(email)
 
+		(user, domain) = email.split('@')
+		box_size = 0
+		box_quota = 0
+		percent = ''
+		try:
+			dirsize_file = os.path.join(env['STORAGE_ROOT'], f'mail/mailboxes/{domain}/{user}/maildirsize')
+			with open(dirsize_file, encoding="utf-8") as f:
+				box_quota = int(f.readline().split('S')[0])
+				for line in f:
+					(size, _count) = line.split(' ')
+					box_size += int(size)
+
+			try:
+				percent = (box_size / box_quota) * 100
+			except:
+				percent = 'Error'
+
+		except:
+			box_size = '?'
+			box_quota = '?'
+			percent = '?'
+
+		if quota == '0':
+			percent = ''
+
 		user = {
 			"email": email,
 			"privileges": parse_privs(privileges),
+            "quota": quota,
+			"box_quota": box_quota,
+			"box_size": sizeof_fmt(box_size) if box_size != '?' else box_size,
+			"percent": f'{percent:3.0f}%' if type(percent) != str else percent,
 			"status": "active",
 		}
 		users.append(user)
@@ -153,6 +191,9 @@ def get_mail_users_ex(env, with_archived=False):
 						"privileges": [],
 						"status": "inactive",
 						"mailbox": mbox,
+                        "box_size": '?',
+                        "box_quota": '?',
+                        "percent": '?',
 					}
 					users.append(user)
 
@@ -186,14 +227,13 @@ def get_admins(env):
 	return users
 
 def get_mail_aliases(env):
-	# Returns a sorted list of tuples of (address, forward-tos, permitted-senders).
+	# Returns a sorted list of tuples of (address, forward-tos, permitted-senders, auto).
 	c = open_database(env)
-	c.execute('SELECT source, destination, permitted_senders FROM aliases')
+	c.execute('SELECT source, destination, permitted_senders, 0 as auto FROM aliases UNION SELECT source, destination, permitted_senders, 1 as auto FROM auto_aliases')
 	aliases = { row[0]: row for row in c.fetchall() } # make dict
 
 	# put in a canonical order: sort by domain, then by email address lexicographically
-	aliases = [ aliases[address] for address in utils.sort_email_addresses(aliases.keys(), env) ]
+	return [ aliases[address] for address in utils.sort_email_addresses(aliases.keys(), env) ]
-	return aliases
 
 def get_mail_aliases_ex(env):
 	# Returns a complex data structure of all mail aliases, similar
@@ -208,7 +248,7 @@ def get_mail_aliases_ex(env):
 	#         address_display: "name@domain.tld", # full Unicode
 	#         forwards_to: ["user1@domain.com", "receiver-only1@domain.com", ...],
 	#         permitted_senders: ["user1@domain.com", "sender-only1@domain.com", ...] OR null,
-	#         required: True|False
+	#         auto: True|False
 	#       },
 	#       ...
 	#     ]
@@ -216,15 +256,16 @@ def get_mail_aliases_ex(env):
 	#   ...
 	# ]
 
-	required_aliases = get_required_aliases(env)
 	domains = {}
-	for address, forwards_to, permitted_senders in get_mail_aliases(env):
+	for address, forwards_to, permitted_senders, auto in get_mail_aliases(env):
+		# skip auto domain maps since these are not informative in the control panel's aliases list
+		if auto and address.startswith("@"): continue
+
 		# get alias info
 		domain = get_domain(address)
-		required = (address in required_aliases)
 
 		# add to list
-		if not domain in domains:
+		if domain not in domains:
 			domains[domain] = {
 				"domain": domain,
 				"aliases": [],
@@ -234,7 +275,7 @@ def get_mail_aliases_ex(env):
 			"address_display": prettify_idn_email_address(address),
 			"forwards_to": [prettify_idn_email_address(r.strip()) for r in forwards_to.split(",")],
 			"permitted_senders": [prettify_idn_email_address(s.strip()) for s in permitted_senders.split(",")] if permitted_senders is not None else None,
-			"required": required,
+			"auto": bool(auto),
 		})
 
 	# Sort domains.
@@ -242,7 +283,7 @@ def get_mail_aliases_ex(env):
 
 	# Sort aliases within each domain first by required-ness then lexicographically by address.
 	for domain in domains:
-		domain["aliases"].sort(key = lambda alias : (alias["required"], alias["address"]))
+		domain["aliases"].sort(key = operator.itemgetter("auto", "address"))
 	return domains
 
 def get_domain(emailaddr, as_unicode=True):
@@ -261,22 +302,23 @@ def get_domain(emailaddr, as_unicode=True):
 def get_mail_domains(env, filter_aliases=lambda alias : True, users_only=False):
 	# Returns the domain names (IDNA-encoded) of all of the email addresses
 	# configured on the system. If users_only is True, only return domains
-	# with email addresses that correspond to user accounts.
+	# with email addresses that correspond to user accounts. Exclude Unicode
+	# forms of domain names listed in the automatic aliases table.
 	domains = []
 	domains.extend([get_domain(login, as_unicode=False) for login in get_mail_users(env)])
 	if not users_only:
-		domains.extend([get_domain(address, as_unicode=False) for address, *_ in get_mail_aliases(env) if filter_aliases(address) ])
+		domains.extend([get_domain(address, as_unicode=False) for address, _, _, auto in get_mail_aliases(env) if filter_aliases(address) and not auto ])
 	return set(domains)
 
-def add_mail_user(email, pw, privs, env):
+def add_mail_user(email, pw, privs, quota, env):
 	# validate email
 	if email.strip() == "":
 		return ("No email address provided.", 400)
-	elif not validate_email(email):
+	if not validate_email(email):
 		return ("Invalid email address.", 400)
-	elif not validate_email(email, mode='user'):
+	if not validate_email(email, mode='user'):
 		return ("User account email addresses may only use the lowercase ASCII letters a-z, the digits 0-9, underscore (_), hyphen (-), and period (.).", 400)
-	elif is_dcv_address(email) and len(get_mail_users(env)) > 0:
+	if is_dcv_address(email) and len(get_mail_users(env)) > 0:
 		# Make domain control validation hijacking a little harder to mess up by preventing the usual
 		# addresses used for DCV from being user accounts. Except let it be the first account because
 		# during box setup the user won't know the rules.
@@ -294,6 +336,14 @@ def add_mail_user(email, pw, privs, env):
 			validation = validate_privilege(p)
 			if validation: return validation
 
+	if quota is None:
+		quota = '0'
+
+	try:
+		quota = validate_quota(quota)
+	except ValueError as e:
+		return (str(e), 400)
+
 	# get the database
 	conn, c = open_database(env, with_connection=True)
 
@@ -302,14 +352,16 @@ def add_mail_user(email, pw, privs, env):
 
 	# add the user to the database
 	try:
-		c.execute("INSERT INTO users (email, password, privileges) VALUES (?, ?, ?)",
+		c.execute("INSERT INTO users (email, password, privileges, quota) VALUES (?, ?, ?, ?)",
-			(email, pw, "\n".join(privs)))
+			(email, pw, "\n".join(privs), quota))
 	except sqlite3.IntegrityError:
 		return ("User already exists.", 400)
 
 	# write databasebefore next step
 	conn.commit()
 
+	dovecot_quota_recalc(email)
+
 	# Update things in case any new domains are added.
 	return kick(env, "mail user added")
 
@@ -324,7 +376,7 @@ def set_mail_password(email, pw, env):
 	conn, c = open_database(env, with_connection=True)
 	c.execute("UPDATE users SET password=? WHERE email=?", (pw, email))
 	if c.rowcount != 1:
-		return ("That's not a user (%s)." % email, 400)
+		return (f"That's not a user ({email}).", 400)
 	conn.commit()
 	return "OK"
 
@@ -334,6 +386,58 @@ def hash_password(pw):
 	# http://wiki2.dovecot.org/Authentication/PasswordSchemes
 	return utils.shell('check_output', ["/usr/bin/doveadm", "pw", "-s", "SHA512-CRYPT", "-p", pw]).strip()
 
+
+def get_mail_quota(email, env):
+	_conn, c = open_database(env, with_connection=True)
+	c.execute("SELECT quota FROM users WHERE email=?", (email,))
+	rows = c.fetchall()
+	if len(rows) != 1:
+		return (f"That's not a user ({email}).", 400)
+
+	return rows[0][0]
+
+
+def set_mail_quota(email, quota, env):
+	# validate that password is acceptable
+	quota = validate_quota(quota)
+
+	# update the database
+	conn, c = open_database(env, with_connection=True)
+	c.execute("UPDATE users SET quota=? WHERE email=?", (quota, email))
+	if c.rowcount != 1:
+		return (f"That's not a user ({email}).", 400)
+	conn.commit()
+
+	dovecot_quota_recalc(email)
+
+	return "OK"
+
+def dovecot_quota_recalc(email):
+	# dovecot processes running for the user will not recognize the new quota setting
+	# a reload is necessary to reread the quota setting, but it will also shut down
+	# running dovecot processes.  Email clients generally log back in when they lose
+	# a connection.
+	# subprocess.call(['doveadm', 'reload'])
+
+	# force dovecot to recalculate the quota info for the user.
+	utils.shell("check_call", ["doveadm", "quota", "recalc", "-u", email])
+
+def validate_quota(quota):
+	# validate quota
+	quota = quota.strip().upper()
+
+	if quota == "":
+		msg = "No quota provided."
+		raise ValueError(msg)
+	if re.search(r"[\s,.]", quota):
+		msg = "Quotas cannot contain spaces, commas, or decimal points."
+		raise ValueError(msg)
+	if not re.match(r'^[\d]+[GM]?$', quota):
+		msg = "Invalid quota."
+		raise ValueError(msg)
+
+	return quota
+
 def get_mail_password(email, env):
 	# Gets the hashed password for a user. Passwords are stored in Dovecot's
 	# password format, with a prefixed scheme.
@@ -343,7 +447,8 @@ def get_mail_password(email, env):
 	c.execute('SELECT password FROM users WHERE email=?', (email,))
 	rows = c.fetchall()
 	if len(rows) != 1:
-		raise ValueError("That's not a user (%s)." % email)
+		msg = f"That's not a user ({email})."
+		raise ValueError(msg)
 	return rows[0][0]
 
 def remove_mail_user(email, env):
@@ -351,7 +456,7 @@ def remove_mail_user(email, env):
 	conn, c = open_database(env, with_connection=True)
 	c.execute("DELETE FROM users WHERE email=?", (email,))
 	if c.rowcount != 1:
-		return ("That's not a user (%s)." % email, 400)
+		return (f"That's not a user ({email}).", 400)
 	conn.commit()
 
 	# Update things in case any domains are removed.
@@ -367,12 +472,12 @@ def get_mail_user_privileges(email, env, empty_on_error=False):
 	rows = c.fetchall()
 	if len(rows) != 1:
 		if empty_on_error: return []
-		return ("That's not a user (%s)." % email, 400)
+		return (f"That's not a user ({email}).", 400)
 	return parse_privs(rows[0][0])
 
 def validate_privilege(priv):
 	if "\n" in priv or priv.strip() == "":
-		return ("That's not a valid privilege (%s)." % priv, 400)
+		return (f"That's not a valid privilege ({priv}).", 400)
 	return None
 
 def add_remove_mail_user_privilege(email, priv, action, env):
@@ -415,7 +520,7 @@ def add_mail_alias(address, forwards_to, permitted_senders, env, update_if_exist
 	if address == "":
 		return ("No email address provided.", 400)
 	if not validate_email(address, mode='alias'):
-		return ("Invalid email address (%s)." % address, 400)
+		return (f"Invalid email address ({address}).", 400)
 
 	# validate forwards_to
 	validated_forwards_to = []
@@ -444,7 +549,7 @@ def add_mail_alias(address, forwards_to, permitted_senders, env, update_if_exist
 				# Strip any +tag from email alias and check privileges
 				privileged_email = re.sub(r"(?=\+)[^@]*(?=@)",'',email)
 				if not validate_email(email):
-					return ("Invalid receiver email address (%s)." % email, 400)
+					return (f"Invalid receiver email address ({email}).", 400)
 				if is_dcv_source and not is_dcv_address(email) and "admin" not in get_mail_user_privileges(privileged_email, env, empty_on_error=True):
 					# Make domain control validation hijacking a little harder to mess up by
 					# requiring aliases for email addresses typically used in DCV to forward
@@ -464,7 +569,7 @@ def add_mail_alias(address, forwards_to, permitted_senders, env, update_if_exist
 			login = login.strip()
 			if login == "": continue
 			if login not in valid_logins:
-				return ("Invalid permitted sender: %s is not a user on this system." % login, 400)
+				return (f"Invalid permitted sender: {login} is not a user on this system.", 400)
 			validated_permitted_senders.append(login)
 
 	# Make sure the alias has either a forwards_to or a permitted_sender.
@@ -475,10 +580,7 @@ def add_mail_alias(address, forwards_to, permitted_senders, env, update_if_exist
 
 	forwards_to = ",".join(validated_forwards_to)
 
-	if len(validated_permitted_senders) == 0:
+	permitted_senders = None if len(validated_permitted_senders) == 0 else ",".join(validated_permitted_senders)
-		permitted_senders = None
-	else:
-		permitted_senders = ",".join(validated_permitted_senders)
 
 	conn, c = open_database(env, with_connection=True)
 	try:
@@ -486,16 +588,16 @@ def add_mail_alias(address, forwards_to, permitted_senders, env, update_if_exist
 		return_status = "alias added"
 	except sqlite3.IntegrityError:
 		if not update_if_exists:
-			return ("Alias already exists (%s)." % address, 400)
+			return (f"Alias already exists ({address}).", 400)
-		else:
+		c.execute("UPDATE aliases SET destination = ?, permitted_senders = ? WHERE source = ?", (forwards_to, permitted_senders, address))
-			c.execute("UPDATE aliases SET destination = ?, permitted_senders = ? WHERE source = ?", (forwards_to, permitted_senders, address))
+		return_status = "alias updated"
-			return_status = "alias updated"
 
 	conn.commit()
 
 	if do_kick:
 		# Update things in case any new domains are added.
 		return kick(env, return_status)
+	return None
 
 def remove_mail_alias(address, env, do_kick=True):
 	# convert Unicode domain to IDNA
@@ -505,12 +607,20 @@ def remove_mail_alias(address, env, do_kick=True):
 	conn, c = open_database(env, with_connection=True)
 	c.execute("DELETE FROM aliases WHERE source=?", (address,))
 	if c.rowcount != 1:
-		return ("That's not an alias (%s)." % address, 400)
+		return (f"That's not an alias ({address}).", 400)
 	conn.commit()
 
 	if do_kick:
 		# Update things in case any domains are removed.
 		return kick(env, "alias removed")
+	return None
+
+def add_auto_aliases(aliases, env):
+	conn, c = open_database(env, with_connection=True)
+	c.execute("DELETE FROM auto_aliases")
+	for source, destination in aliases.items():
+		c.execute("INSERT INTO auto_aliases (source, destination) VALUES (?, ?)", (source, destination))
+	conn.commit()
 
 def get_system_administrator(env):
 	return "administrator@" + env['PRIMARY_HOSTNAME']
@@ -555,41 +665,36 @@ def kick(env, mail_result=None):
 	if mail_result is not None:
 		results.append(mail_result + "\n")
 
-	# Ensure every required alias exists.
+	auto_aliases = { }
 
-	existing_users = get_mail_users(env)
+	# Map required aliases to the administrator alias (which should be created manually).
-	existing_alias_records = get_mail_aliases(env)
+	administrator = get_system_administrator(env)
-	existing_aliases = set(a for a, *_ in existing_alias_records) # just first entry in tuple
 	required_aliases = get_required_aliases(env)
+	for alias in required_aliases:
+		if alias == administrator: continue # don't make an alias from the administrator to itself --- this alias must be created manually
+		auto_aliases[alias] = administrator
 
-	def ensure_admin_alias_exists(address):
+	# Add domain maps from Unicode forms of IDNA domains to the ASCII forms stored in the alias table.
-		# If a user account exists with that address, we're good.
+	for domain in get_mail_domains(env):
-		if address in existing_users:
+		try:
-			return
+			domain_unicode = idna.decode(domain.encode("ascii"))
+			if domain == domain_unicode: continue # not an IDNA/Unicode domain
+			auto_aliases["@" + domain_unicode] = "@" + domain
+		except (ValueError, UnicodeError, idna.IDNAError):
+			continue
 
-		# If the alias already exists, we're good.
+	add_auto_aliases(auto_aliases, env)
-		if address in existing_aliases:
-			return
 
-		# Doesn't exist.
+	# Remove auto-generated postmaster/admin/abuse alises from the main aliases table.
-		administrator = get_system_administrator(env)
+	# They are now stored in the auto_aliases table.
-		if address == administrator: return # don't make an alias from the administrator to itself --- this alias must be created manually
+	for address, forwards_to, _permitted_senders, auto in get_mail_aliases(env):
-		add_mail_alias(address, administrator, "", env, do_kick=False)
-		if administrator not in existing_aliases: return # don't report the alias in output if the administrator alias isn't in yet -- this is a hack to supress confusing output on initial setup
-		results.append("added alias %s (=> %s)\n" % (address, administrator))
-
-	for address in required_aliases:
-		ensure_admin_alias_exists(address)
-
-	# Remove auto-generated postmaster/admin on domains we no
-	# longer have any other email addresses for.
-	for address, forwards_to, *_ in existing_alias_records:
 		user, domain = address.split("@")
-		if user in ("postmaster", "admin", "abuse") \
+		if user in {"postmaster", "admin", "abuse"} \
 			and address not in required_aliases \
-			and forwards_to == get_system_administrator(env):
+			and forwards_to == get_system_administrator(env) \
+			and not auto:
 			remove_mail_alias(address, env, do_kick=False)
-			results.append("removed alias %s (was to %s; domain no longer used for email)\n" % (address, forwards_to))
+			results.append(f"removed alias {address} (was to {forwards_to}; domain no longer used for email)\n")
 
 	# Update DNS and nginx in case any domains are added/removed.
 
@@ -604,9 +709,11 @@ def kick(env, mail_result=None):
 def validate_password(pw):
 	# validate password
 	if pw.strip() == "":
-		raise ValueError("No password provided.")
+		msg = "No password provided."
+		raise ValueError(msg)
 	if len(pw) < 8:
-		raise ValueError("Passwords must be at least eight characters.")
+		msg = "Passwords must be at least eight characters."
+		raise ValueError(msg)
 
 if __name__ == "__main__":
 	import sys

management/mfa.py

@@ -41,9 +41,11 @@ def enable_mfa(email, type, secret, token, label, env):
 		# Sanity check with the provide current token.
 		totp = pyotp.TOTP(secret)
 		if not totp.verify(token, valid_window=1):
-			raise ValueError("Invalid token.")
+			msg = "Invalid token."
+			raise ValueError(msg)
 	else:
-		raise ValueError("Invalid MFA type.")
+		msg = "Invalid MFA type."
+		raise ValueError(msg)
 
 	conn, c = open_database(env, with_connection=True)
 	c.execute('INSERT INTO mfa (user_id, type, secret, label) VALUES (?, ?, ?, ?)', (get_user_id(email, c), type, secret, label))
@@ -66,10 +68,12 @@ def disable_mfa(email, mfa_id, env):
 	return c.rowcount > 0
 
 def validate_totp_secret(secret):
-	if type(secret) != str or secret.strip() == "":
+	if not isinstance(secret, str) or secret.strip() == "":
-		raise ValueError("No secret provided.")
+		msg = "No secret provided."
+		raise ValueError(msg)
 	if len(secret) != 32:
-		raise ValueError("Secret should be a 32 characters base32 string")
+		msg = "Secret should be a 32 characters base32 string"
+		raise ValueError(msg)
 
 def provision_totp(email, env):
 	# Make a new secret.

management/ssl_certificates.py

@@ -4,7 +4,8 @@
 import os, os.path, re, shutil, subprocess, tempfile
 
 from utils import shell, safe_domain_name, sort_domains
-import idna
+import functools
+import operator
 
 # SELECTING SSL CERTIFICATES FOR USE IN WEB
 
@@ -13,7 +14,7 @@ def get_ssl_certificates(env):
 	# that the certificates are good for to the best certificate for
 	# the domain.
 
-	from cryptography.hazmat.primitives.asymmetric.rsa import RSAPrivateKey
+	from cryptography.hazmat.primitives.asymmetric import dsa, rsa, ec
 	from cryptography.x509 import Certificate
 
 	# The certificates are all stored here:
@@ -58,37 +59,33 @@ def get_ssl_certificates(env):
 			# Not a valid PEM format for a PEM type we care about.
 			continue
 
-		# Remember where we got this object.
-		pem._filename = fn
-
-		# Is it a private key?
-		if isinstance(pem, RSAPrivateKey):
-			private_keys[pem.public_key().public_numbers()] = pem
-
 		# Is it a certificate?
 		if isinstance(pem, Certificate):
-			certificates.append(pem)
+			certificates.append({ "filename": fn, "cert": pem })
+		# It is a private key
+		elif (isinstance(pem, (rsa.RSAPrivateKey, dsa.DSAPrivateKey, ec.EllipticCurvePrivateKey))):
+			private_keys[pem.public_key().public_numbers()] = { "filename": fn, "key": pem }
+
 
 	# Process the certificates.
 	domains = { }
 	for cert in certificates:
 		# What domains is this certificate good for?
-		cert_domains, primary_domain = get_certificate_domains(cert)
+		cert_domains, primary_domain = get_certificate_domains(cert["cert"])
-		cert._primary_domain = primary_domain
+		cert["primary_domain"] = primary_domain
 
 		# Is there a private key file for this certificate?
-		private_key = private_keys.get(cert.public_key().public_numbers())
+		private_key = private_keys.get(cert["cert"].public_key().public_numbers())
 		if not private_key:
 			continue
-		cert._private_key = private_key
+		cert["private_key"] = private_key
 
 		# Add this cert to the list of certs usable for the domains.
 		for domain in cert_domains:
 			# The primary hostname can only use a certificate mapped
 			# to the system private key.
-			if domain == env['PRIMARY_HOSTNAME']:
+			if domain == env['PRIMARY_HOSTNAME'] and cert["private_key"]["filename"] != os.path.join(env['STORAGE_ROOT'], 'ssl', 'ssl_private_key.pem'):
-				if cert._private_key._filename != os.path.join(env['STORAGE_ROOT'], 'ssl', 'ssl_private_key.pem'):
+				continue
-					continue
 
 			domains.setdefault(domain, []).append(cert)
 
@@ -100,10 +97,10 @@ def get_ssl_certificates(env):
 		#for c in cert_list: print(domain, c.not_valid_before, c.not_valid_after, "("+str(now)+")", c.issuer, c.subject, c._filename)
 		cert_list.sort(key = lambda cert : (
 			# must be valid NOW
-			cert.not_valid_before <= now <= cert.not_valid_after,
+			cert["cert"].not_valid_before <= now <= cert["cert"].not_valid_after,
 
 			# prefer one that is not self-signed
-			cert.issuer != cert.subject,
+			cert["cert"].issuer != cert["cert"].subject,
 
 			###########################################################
 			# The above lines ensure that valid certificates are chosen
@@ -113,7 +110,7 @@ def get_ssl_certificates(env):
 
 			# prefer one with the expiration furthest into the future so
 			# that we can easily rotate to new certs as we get them
-			cert.not_valid_after,
+			cert["cert"].not_valid_after,
 
 			###########################################################
 			# We always choose the certificate that is good for the
@@ -128,15 +125,15 @@ def get_ssl_certificates(env):
 
 			# in case a certificate is installed in multiple paths,
 			# prefer the... lexicographically last one?
-			cert._filename,
+			cert["filename"],
 
 		), reverse=True)
 		cert = cert_list.pop(0)
 		ret[domain] = {
-			"private-key": cert._private_key._filename,
+			"private-key": cert["private_key"]["filename"],
-			"certificate": cert._filename,
+			"certificate": cert["filename"],
-			"primary-domain": cert._primary_domain,
+			"primary-domain": cert["primary_domain"],
-			"certificate_object": cert,
+			"certificate_object": cert["cert"],
 			}
 
 	return ret
@@ -153,23 +150,21 @@ def get_domain_ssl_files(domain, ssl_certificates, env, allow_missing_cert=False
 			"certificate_object": load_pem(load_cert_chain(ssl_certificate)[0]),
 		}
 
-	if use_main_cert:
+	if use_main_cert and domain == env['PRIMARY_HOSTNAME']:
-		if domain == env['PRIMARY_HOSTNAME']:
+		# The primary domain must use the server certificate because
-			# The primary domain must use the server certificate because
+		# it is hard-coded in some service configuration files.
-			# it is hard-coded in some service configuration files.
+		return system_certificate
-			return system_certificate
 
-	wildcard_domain = re.sub("^[^\.]+", "*", domain)
+	wildcard_domain = re.sub(r"^[^\.]+", "*", domain)
 	if domain in ssl_certificates:
 		return ssl_certificates[domain]
-	elif wildcard_domain in ssl_certificates:
+	if wildcard_domain in ssl_certificates:
 		return ssl_certificates[wildcard_domain]
-	elif not allow_missing_cert:
+	if not allow_missing_cert:
 		# No valid certificate is available for this domain! Return default files.
 		return system_certificate
-	else:
+	# No valid certificate is available for this domain.
-		# No valid certificate is available for this domain.
+	return None
-		return None
 
 
 # PROVISIONING CERTIFICATES FROM LETSENCRYPT
@@ -215,7 +210,7 @@ def get_certificates_to_provision(env, limit_domains=None, show_valid_certs=True
 				if not value: continue # IPv6 is not configured
 				response = query_dns(domain, rtype)
 				if response != normalize_ip(value):
-					bad_dns.append("%s (%s)" % (response, rtype))
+					bad_dns.append(f"{response} ({rtype})")
 
 			if bad_dns:
 				domains_cant_provision[domain] = "The domain name does not resolve to this machine: " \
@@ -268,11 +263,11 @@ def provision_certificates(env, limit_domains):
 	# primary domain listed in each certificate.
 	from dns_update import get_dns_zones
 	certs = { }
-	for zone, zonefile in get_dns_zones(env):
+	for zone, _zonefile in get_dns_zones(env):
 		certs[zone] = [[]]
 	for domain in sort_domains(domains, env):
 		# Does the domain end with any domain we've seen so far.
-		for parent in certs.keys():
+		for parent in certs:
 			if domain.endswith("." + parent):
 				# Add this to the parent's list of domains.
 				# Start a new group if the list already has
@@ -289,7 +284,7 @@ def provision_certificates(env, limit_domains):
 
 	# Flatten to a list of lists of domains (from a mapping). Remove empty
 	# lists (zones with no domains that need certs).
-	certs = sum(certs.values(), [])
+	certs = functools.reduce(operator.iadd, certs.values(), [])
 	certs = [_ for _ in certs if len(_) > 0]
 
 	# Prepare to provision.
@@ -417,7 +412,7 @@ def create_csr(domain, ssl_key, country_code, env):
 				"openssl", "req", "-new",
 				"-key", ssl_key,
 				"-sha256",
-				"-subj", "/C=%s/CN=%s" % (country_code, domain)])
+				"-subj", f"/C={country_code}/CN={domain}"])
 
 def install_cert(domain, ssl_cert, ssl_chain, env, raw=False):
 	# Write the combined cert+chain to a temporary path and validate that it is OK.
@@ -438,7 +433,7 @@ def install_cert(domain, ssl_cert, ssl_chain, env, raw=False):
 			cert_status += " " + cert_status_details
 		return cert_status
 
-	# Copy certifiate into ssl directory.
+	# Copy certificate into ssl directory.
 	install_cert_copy_file(fn, env)
 
 	# Run post-install steps.
@@ -453,8 +448,8 @@ def install_cert_copy_file(fn, env):
 	from cryptography.hazmat.primitives import hashes
 	from binascii import hexlify
 	cert = load_pem(load_cert_chain(fn)[0])
-	all_domains, cn = get_certificate_domains(cert)
+	_all_domains, cn = get_certificate_domains(cert)
-	path = "%s-%s-%s.pem" % (
+	path = "{}-{}-{}.pem".format(
 		safe_domain_name(cn), # common name, which should be filename safe because it is IDNA-encoded, but in case of a malformed cert make sure it's ok to use as a filename
 		cert.not_valid_after.date().isoformat().replace("-", ""), # expiration date
 		hexlify(cert.fingerprint(hashes.SHA256())).decode("ascii")[0:8], # fingerprint prefix
@@ -509,7 +504,7 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 	# Check that the ssl_certificate & ssl_private_key files are good
 	# for the provided domain.
 
-	from cryptography.hazmat.primitives.asymmetric.rsa import RSAPrivateKey
+	from cryptography.hazmat.primitives.asymmetric import rsa, dsa, ec
 	from cryptography.x509 import Certificate
 
 	# The ssl_certificate file may contain a chain of certificates. We'll
@@ -520,33 +515,35 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 		cert = load_pem(ssl_cert_chain[0])
 		if not isinstance(cert, Certificate): raise ValueError("This is not a certificate file.")
 	except ValueError as e:
-		return ("There is a problem with the certificate file: %s" % str(e), None)
+		return (f"There is a problem with the certificate file: {e!s}", None)
 
 	# First check that the domain name is one of the names allowed by
 	# the certificate.
 	if domain is not None:
-		certificate_names, cert_primary_name = get_certificate_domains(cert)
+		certificate_names, _cert_primary_name = get_certificate_domains(cert)
 
 		# Check that the domain appears among the acceptable names, or a wildcard
 		# form of the domain name (which is a stricter check than the specs but
 		# should work in normal cases).
-		wildcard_domain = re.sub("^[^\.]+", "*", domain)
+		wildcard_domain = re.sub(r"^[^\.]+", "*", domain)
 		if domain not in certificate_names and wildcard_domain not in certificate_names:
-			return ("The certificate is for the wrong domain name. It is for %s."
+			return ("The certificate is for the wrong domain name. It is for {}.".format(", ".join(sorted(certificate_names))), None)
-				% ", ".join(sorted(certificate_names)), None)
 
 	# Second, check that the certificate matches the private key.
 	if ssl_private_key is not None:
 		try:
-			priv_key = load_pem(open(ssl_private_key, 'rb').read())
+			with open(ssl_private_key, 'rb') as f:
+				priv_key = load_pem(f.read())
 		except ValueError as e:
-			return ("The private key file %s is not a private key file: %s" % (ssl_private_key, str(e)), None)
+			return (f"The private key file {ssl_private_key} is not a private key file: {e!s}", None)
 
-		if not isinstance(priv_key, RSAPrivateKey):
+		if (not isinstance(priv_key, rsa.RSAPrivateKey)
-			return ("The private key file %s is not a private key file." % ssl_private_key, None)
+			and not isinstance(priv_key, dsa.DSAPrivateKey)
+			and not isinstance(priv_key, ec.EllipticCurvePrivateKey)):
+			return (f"The private key file {ssl_private_key} is not a private key file.", None)
 
 		if priv_key.public_key().public_numbers() != cert.public_key().public_numbers():
-			return ("The certificate does not correspond to the private key at %s." % ssl_private_key, None)
+			return (f"The certificate does not correspond to the private key at {ssl_private_key}.", None)
 
 		# We could also use the openssl command line tool to get the modulus
 		# listed in each file. The output of each command below looks like "Modulus=XXXXX".
@@ -568,7 +565,7 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 	import datetime
 	now = datetime.datetime.utcnow()
 	if not(cert.not_valid_before <= now <= cert.not_valid_after):
-		return ("The certificate has expired or is not yet valid. It is valid from %s to %s." % (cert.not_valid_before, cert.not_valid_after), None)
+		return (f"The certificate has expired or is not yet valid. It is valid from {cert.not_valid_before} to {cert.not_valid_after}.", None)
 
 	# Next validate that the certificate is valid. This checks whether the certificate
 	# is self-signed, that the chain of trust makes sense, that it is signed by a CA
@@ -590,34 +587,33 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 		# Certificate is self-signed. Probably we detected this above.
 		return ("SELF-SIGNED", None)
 
-	elif retcode != 0:
+	if retcode != 0:
 		if "unable to get local issuer certificate" in verifyoutput:
-			return ("The certificate is missing an intermediate chain or the intermediate chain is incorrect or incomplete. (%s)" % verifyoutput, None)
+			return (f"The certificate is missing an intermediate chain or the intermediate chain is incorrect or incomplete. ({verifyoutput})", None)
 
 		# There is some unknown problem. Return the `openssl verify` raw output.
 		return ("There is a problem with the certificate.", verifyoutput.strip())
 
+	# `openssl verify` returned a zero exit status so the cert is currently
+	# good.
+
+	# But is it expiring soon?
+	cert_expiration_date = cert.not_valid_after
+	ndays = (cert_expiration_date-now).days
+	if not rounded_time or ndays <= 10:
+		# Yikes better renew soon!
+		expiry_info = "The certificate expires in %d days on %s." % (ndays, cert_expiration_date.date().isoformat())
 	else:
-		# `openssl verify` returned a zero exit status so the cert is currently
+		# We'll renew it with Lets Encrypt.
-		# good.
+		expiry_info = f"The certificate expires on {cert_expiration_date.date().isoformat()}."
 
-		# But is it expiring soon?
+	if warn_if_expiring_soon and ndays <= warn_if_expiring_soon:
-		cert_expiration_date = cert.not_valid_after
+		# Warn on day 10 to give 4 days for us to automatically renew the
-		ndays = (cert_expiration_date-now).days
+		# certificate, which occurs on day 14.
-		if not rounded_time or ndays <= 10:
+		return ("The certificate is expiring soon: " + expiry_info, None)
-			# Yikes better renew soon!
-			expiry_info = "The certificate expires in %d days on %s." % (ndays, cert_expiration_date.date().isoformat())
-		else:
-			# We'll renew it with Lets Encrypt.
-			expiry_info = "The certificate expires on %s." % cert_expiration_date.date().isoformat()
 
-		if warn_if_expiring_soon and ndays <= warn_if_expiring_soon:
+	# Return the special OK code.
-			# Warn on day 10 to give 4 days for us to automatically renew the
+	return ("OK", expiry_info)
-			# certificate, which occurs on day 14.
-			return ("The certificate is expiring soon: " + expiry_info, None)
-
-		# Return the special OK code.
-		return ("OK", expiry_info)
 
 def load_cert_chain(pemfile):
 	# A certificate .pem file may contain a chain of certificates.
@@ -627,7 +623,8 @@ def load_cert_chain(pemfile):
 		pem = f.read() + b"\n" # ensure trailing newline
 		pemblocks = re.findall(re_pem, pem)
 		if len(pemblocks) == 0:
-			raise ValueError("File does not contain valid PEM data.")
+			msg = "File does not contain valid PEM data."
+			raise ValueError(msg)
 		return pemblocks
 
 def load_pem(pem):
@@ -638,9 +635,10 @@ def load_pem(pem):
 	from cryptography.hazmat.backends import default_backend
 	pem_type = re.match(b"-+BEGIN (.*?)-+[\r\n]", pem)
 	if pem_type is None:
-		raise ValueError("File is not a valid PEM-formatted file.")
+		msg = "File is not a valid PEM-formatted file."
+		raise ValueError(msg)
 	pem_type = pem_type.group(1)
-	if pem_type in (b"RSA PRIVATE KEY", b"PRIVATE KEY"):
+	if pem_type.endswith(b"PRIVATE KEY"):
 		return serialization.load_pem_private_key(pem, password=None, backend=default_backend())
 	if pem_type == b"CERTIFICATE":
 		return load_pem_x509_certificate(pem, default_backend())
@@ -669,13 +667,11 @@ def get_certificate_domains(cert):
 	def idna_decode_dns_name(dns_name):
 		if dns_name.startswith("*."):
 			return "*." + idna.encode(dns_name[2:]).decode('ascii')
-		else:
+		return idna.encode(dns_name).decode('ascii')
-			return idna.encode(dns_name).decode('ascii')
 
 	try:
 		sans = cert.extensions.get_extension_for_oid(OID_SUBJECT_ALTERNATIVE_NAME).value.get_values_for_type(DNSName)
-		for san in sans:
+		names.update(idna_decode_dns_name(san) for san in sans)
-			names.add(idna_decode_dns_name(san))
 	except ExtensionNotFound:
 		pass
 

management/status_checks.py

@@ -4,11 +4,11 @@
 # TLS certificates have been signed, etc., and if not tells the user
 # what to do next.
 
-import sys, os, os.path, re, subprocess, datetime, multiprocessing.pool
+import sys, os, os.path, re, datetime, multiprocessing.pool
 import asyncio
+import dateutil.parser, dateutil.relativedelta, dateutil.tz
 
 import dns.reversename, dns.resolver
-import dateutil.parser, dateutil.tz
 import idna
 import psutil
 import postfix_mta_sts_resolver.resolver
@@ -18,7 +18,8 @@ from web_update import get_web_domains, get_domains_with_a_records
 from ssl_certificates import get_ssl_certificates, get_domain_ssl_files, check_certificate
 from mailconfig import get_mail_domains, get_mail_aliases
 
-from utils import shell, sort_domains, load_env_vars_from_file, load_settings
+from utils import shell, sort_domains, load_env_vars_from_file, load_settings, get_ssh_port, get_ssh_config_value
+from backup import get_backup_config, backup_status
 
 def get_services():
 	return [
@@ -66,35 +67,23 @@ def run_checks(rounded_values, env, output, pool, domains_to_check=None):
 	run_network_checks(env, output)
 	run_domain_checks(rounded_values, env, output, pool, domains_to_check=domains_to_check)
 
-def get_ssh_port():
-	# Returns ssh port
-	try:
-		output = shell('check_output', ['sshd', '-T'])
-	except FileNotFoundError:
-		# sshd is not installed. That's ok.
-		return None
-
-	returnNext = False
-	for e in output.split():
-		if returnNext:
-			return int(e)
-		if e == "port":
-			returnNext = True
-
-	# Did not find port!
-	return None
-
 def run_services_checks(env, output, pool):
 	# Check that system services are running.
 	all_running = True
 	fatal = False
 	ret = pool.starmap(check_service, ((i, service, env) for i, service in enumerate(get_services())), chunksize=1)
-	for i, running, fatal2, output2 in sorted(ret):
+	for _i, running, fatal2, output2 in sorted(ret):
 		if output2 is None: continue # skip check (e.g. no port was set, e.g. no sshd)
 		all_running = all_running and running
 		fatal = fatal or fatal2
 		output2.playback(output)
 
+	# Check fail2ban.
+	code, ret = shell('check_output', ["fail2ban-client", "status"], capture_stderr=True, trap=True)
+	if code != 0:
+		output.print_error("fail2ban is not running.")
+		all_running = False
+
 	if all_running:
 		output.print_ok("All system services are running.")
 
@@ -119,7 +108,7 @@ def check_service(i, service, env):
 		try:
 			s.connect((ip, service["port"]))
 			return True
-		except OSError as e:
+		except OSError:
 			# timed out or some other odd error
 			return False
 		finally:
@@ -135,7 +124,7 @@ def check_service(i, service, env):
 
 			# IPv4 ok but IPv6 failed. Try the PRIVATE_IPV6 address to see if the service is bound to the interface.
 			elif service["port"] != 53 and try_connect(env["PRIVATE_IPV6"]):
-				output.print_error("%s is running (and available over IPv4 and the local IPv6 address), but it is not publicly accessible at %s:%d." % (service['name'], env['PUBLIC_IP'], service['port']))
+				output.print_error("%s is running (and available over IPv4 and the local IPv6 address), but it is not publicly accessible at %s:%d." % (service['name'], env['PUBLIC_IPV6'], service['port']))
 			else:
 				output.print_error("%s is running and available over IPv4 but is not accessible over IPv6 at %s port %d." % (service['name'], env['PUBLIC_IPV6'], service['port']))
 
@@ -146,18 +135,17 @@ def check_service(i, service, env):
 			output.print_error("%s is not running (port %d)." % (service['name'], service['port']))
 
 		# Why is nginx not running?
-		if not running and service["port"] in (80, 443):
+		if not running and service["port"] in {80, 443}:
 			output.print_line(shell('check_output', ['nginx', '-t'], capture_stderr=True, trap=True)[1].strip())
 
+	# Service should be running locally.
+	elif try_connect("127.0.0.1"):
+		running = True
 	else:
-		# Service should be running locally.
+		output.print_error("%s is not running (port %d)." % (service['name'], service['port']))
-		if try_connect("127.0.0.1"):
-			running = True
-		else:
-			output.print_error("%s is not running (port %d)." % (service['name'], service['port']))
 
 	# Flag if local DNS is not running.
-	if not running and service["port"] == 53 and service["public"] == False:
+	if not running and service["port"] == 53 and service["public"] is False:
 		fatal = True
 
 	return (i, running, fatal, output)
@@ -169,6 +157,7 @@ def run_system_checks(rounded_values, env, output):
 	check_system_aliases(env, output)
 	check_free_disk_space(rounded_values, env, output)
 	check_free_memory(rounded_values, env, output)
+	check_backup(rounded_values, env, output)
 
 def check_ufw(env, output):
 	if not os.path.isfile('/usr/sbin/ufw'):
@@ -189,7 +178,7 @@ def check_ufw(env, output):
 		for service in get_services():
 			if service["public"] and not is_port_allowed(ufw, service["port"]):
 				not_allowed_ports += 1
-				output.print_error("Port %s (%s) should be allowed in the firewall, please re-run the setup." % (service["port"], service["name"]))
+				output.print_error("Port {} ({}) should be allowed in the firewall, please re-run the setup.".format(service["port"], service["name"]))
 
 		if not_allowed_ports == 0:
 			output.print_ok("Firewall is active.")
@@ -202,20 +191,15 @@ def is_port_allowed(ufw, port):
 	return any(re.match(str(port) +"[/ \t].*", item) for item in ufw)
 
 def check_ssh_password(env, output):
-	# Check that SSH login with password is disabled. The openssh-server
+	config_value = get_ssh_config_value("passwordauthentication")
-	# package may not be installed so check that before trying to access
+	if config_value:
-	# the configuration file.
+		if config_value == "no":
-	if not os.path.exists("/etc/ssh/sshd_config"):
+			output.print_ok("SSH disallows password-based login.")
-		return
+		else:
-	sshd = open("/etc/ssh/sshd_config").read()
+			output.print_error("""The SSH server on this machine permits password-based login. A more secure
-	if re.search("\nPasswordAuthentication\s+yes", sshd) \
+				way to log in is using a public key. Add your SSH public key to $HOME/.ssh/authorized_keys, check
-		or not re.search("\nPasswordAuthentication\s+no", sshd):
+				that you can log in without a password, set the option 'PasswordAuthentication no' in
-		output.print_error("""The SSH server on this machine permits password-based login. A more secure
+				/etc/ssh/sshd_config, and then restart the openssh via 'sudo service ssh restart'.""")
-			way to log in is using a public key. Add your SSH public key to $HOME/.ssh/authorized_keys, check
-			that you can log in without a password, set the option 'PasswordAuthentication no' in
-			/etc/ssh/sshd_config, and then restart the openssh via 'sudo service ssh restart'.""")
-	else:
-		output.print_ok("SSH disallows password-based login.")
 
 def is_reboot_needed_due_to_package_installation():
 	return os.path.exists("/var/run/reboot-required")
@@ -230,7 +214,7 @@ def check_software_updates(env, output):
 	else:
 		output.print_error("There are %d software packages that can be updated." % len(pkgs))
 		for p in pkgs:
-			output.print_line("%s (%s)" % (p["package"], p["version"]))
+			output.print_line("{} ({})".format(p["package"], p["version"]))
 
 def check_system_aliases(env, output):
 	# Check that the administrator alias exists since that's where all
@@ -253,10 +237,21 @@ def check_free_disk_space(rounded_values, env, output):
 		if rounded_values: disk_msg = "The disk has less than 15% free space."
 		output.print_error(disk_msg)
 
+	# Check that there's only one duplicity cache. If there's more than one,
+	# it's probably no longer in use, and we can recommend clearing the cache
+	# to save space. The cache directory may not exist yet, which is OK.
+	backup_cache_path = os.path.join(env['STORAGE_ROOT'], 'backup/cache')
+	try:
+		backup_cache_count = len(os.listdir(backup_cache_path))
+	except:
+		backup_cache_count = 0
+	if backup_cache_count > 1:
+		output.print_warning(f"The backup cache directory {backup_cache_path} has more than one backup target cache. Consider clearing this directory to save disk space.")
+
 def check_free_memory(rounded_values, env, output):
 	# Check free memory.
 	percent_free = 100 - psutil.virtual_memory().percent
-	memory_msg = "System memory is %s%% free." % str(round(percent_free))
+	memory_msg = f"System memory is {round(percent_free)!s}% free."
 	if percent_free >= 20:
 		if rounded_values: memory_msg = "System free memory is at least 20%."
 		output.print_ok(memory_msg)
@@ -267,6 +262,37 @@ def check_free_memory(rounded_values, env, output):
 		if rounded_values: memory_msg = "System free memory is below 10%."
 		output.print_error(memory_msg)
 
+
+def check_backup(rounded_values, env, output):
+	# Check backups
+	backup_config = get_backup_config(env, for_ui=True)
+	
+	# Is the backup enabled?
+	if backup_config.get("target", "off") == "off":
+		output.print_warning("Backups are disabled. It is recommended to enable a backup for your box.")
+		return
+	else:
+		output.print_ok("Backups are enabled")
+	
+	# Get the age of the most recent backup
+	backup_stat = backup_status(env)
+	
+	backups = backup_stat.get("backups", {})
+	if backups and len(backups) > 0:
+		most_recent = backups[0]["date"]
+		
+		# Calculate time between most recent backup and current time
+		now = datetime.datetime.now(dateutil.tz.tzlocal())
+		bk_date = dateutil.parser.parse(most_recent).astimezone(dateutil.tz.tzlocal())
+		bk_age = dateutil.relativedelta.relativedelta(now, bk_date)
+		
+		if bk_age.days > 7:
+			output.print_error("Backup is more than a week old")
+	else:
+		output.print_error("Could not obtain backup status or no backup has been made (yet). "
+			"This could happen if you have just enabled backups. In that case, check back tomorrow.")
+
+
 def run_network_checks(env, output):
 	# Also see setup/network-checks.sh.
 
@@ -277,7 +303,7 @@ def run_network_checks(env, output):
 	# Stop if we cannot make an outbound connection on port 25. Many residential
 	# networks block outbound port 25 to prevent their network from sending spam.
 	# See if we can reach one of Google's MTAs with a 5-second timeout.
-	code, ret = shell("check_call", ["/bin/nc", "-z", "-w5", "aspmx.l.google.com", "25"], trap=True)
+	_code, ret = shell("check_call", ["/bin/nc", "-z", "-w5", "aspmx.l.google.com", "25"], trap=True)
 	if ret == 0:
 		output.print_ok("Outbound mail (SMTP port 25) is not blocked.")
 	else:
@@ -292,14 +318,43 @@ def run_network_checks(env, output):
 	# will not be able to reliably send mail in these cases.
 	rev_ip4 = ".".join(reversed(env['PUBLIC_IP'].split('.')))
 	zen = query_dns(rev_ip4+'.zen.spamhaus.org', 'A', nxdomain=None)
+	evaluate_spamhaus_lookup(env['PUBLIC_IP'], 'IPv4', rev_ip4, output, zen)
+
+	if not env['PUBLIC_IPV6']:
+		return
+
+	from ipaddress import IPv6Address
+
+	rev_ip6 = ".".join(reversed(IPv6Address(env['PUBLIC_IPV6']).exploded.split(':')))
+	zen = query_dns(rev_ip6+'.zen.spamhaus.org', 'A', nxdomain=None)
+	evaluate_spamhaus_lookup(env['PUBLIC_IPV6'], 'IPv6', rev_ip6, output, zen)
+
+
+def evaluate_spamhaus_lookup(lookupaddress, lookuptype, lookupdomain, output, zen):
+	# See https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now. for
+	# information on spamhaus return codes
 	if zen is None:
-		output.print_ok("IP address is not blacklisted by zen.spamhaus.org.")
+		output.print_ok(f"{lookuptype} address is not blacklisted by zen.spamhaus.org.")
 	elif zen == "[timeout]":
-		output.print_warning("Connection to zen.spamhaus.org timed out. We could not determine whether your server's IP address is blacklisted. Please try again later.")
+		output.print_warning(f"""Connection to zen.spamhaus.org timed out. Could not determine whether this box's
+		 	{lookuptype} address is blacklisted. Please try again later.""")
+	elif zen == "[Not Set]":
+		output.print_warning(f"""Could not connect to zen.spamhaus.org. Could not determine whether this box's
+			{lookuptype} address is blacklisted. Please try again later.""")
+	elif zen == "127.255.255.252":
+		output.print_warning(f"""Incorrect spamhaus query: {lookupdomain + '.zen.spamhaus.org'}. Could not determine whether
+		 	this box's {lookuptype} address is blacklisted.""")
+	elif zen == "127.255.255.254":
+		output.print_warning(f"""Mail-in-a-Box is configured to use a public DNS server. This is not supported by
+			spamhaus. Could not determine whether this box's {lookuptype} address is blacklisted.""")
+	elif zen == "127.255.255.255":
+		output.print_warning(f"""Too many queries have been performed on the spamhaus server. Could not determine
+		 	whether this box's {lookuptype} address is blacklisted.""")
 	else:
-		output.print_error("""The IP address of this machine %s is listed in the Spamhaus Block List (code %s),
+		output.print_error(f"""The {lookuptype} address of this machine {lookupaddress} is listed in the Spamhaus Block
-			which may prevent recipients from receiving your email. See http://www.spamhaus.org/query/ip/%s."""
+		 	List (code {zen}), which may prevent recipients from receiving your email. See
-			% (env['PUBLIC_IP'], zen, env['PUBLIC_IP']))
+		 	http://www.spamhaus.org/query/ip/{lookupaddress}.""")
+
 
 def run_domain_checks(rounded_time, env, output, pool, domains_to_check=None):
 	# Get the list of domains we handle mail for.
@@ -320,7 +375,7 @@ def run_domain_checks(rounded_time, env, output, pool, domains_to_check=None):
 	domains_to_check = [
 		d for d in domains_to_check
 		if not (
-		   d.split(".", 1)[0] in ("www", "autoconfig", "autodiscover", "mta-sts")
+		   d.split(".", 1)[0] in {"www", "autoconfig", "autodiscover", "mta-sts"}
 		   and len(d.split(".", 1)) == 2
 		   and d.split(".", 1)[1] in domains_to_check
 		)
@@ -402,10 +457,9 @@ def check_primary_hostname_dns(domain, env, output, dns_domains, dns_zonefiles):
 	# If a DS record is set on the zone containing this domain, check DNSSEC now.
 	has_dnssec = False
 	for zone in dns_domains:
-		if zone == domain or domain.endswith("." + zone):
+		if (zone == domain or domain.endswith("." + zone)) and query_dns(zone, "DS", nxdomain=None) is not None:
-			if query_dns(zone, "DS", nxdomain=None) is not None:
+			has_dnssec = True
-				has_dnssec = True
+			check_dnssec(zone, env, output, dns_zonefiles, is_checking_primary=True)
-				check_dnssec(zone, env, output, dns_zonefiles, is_checking_primary=True)
 
 	ip = query_dns(domain, "A")
 	ns_ips = query_dns("ns1." + domain, "A") + '/' + query_dns("ns2." + domain, "A")
@@ -417,73 +471,69 @@ def check_primary_hostname_dns(domain, env, output, dns_domains, dns_zonefiles):
 	# the nameserver, are reporting the right info --- but if the glue is incorrect this
 	# will probably fail.
 	if ns_ips == env['PUBLIC_IP'] + '/' + env['PUBLIC_IP']:
-		output.print_ok("Nameserver glue records are correct at registrar. [ns1/ns2.%s ↦ %s]" % (env['PRIMARY_HOSTNAME'], env['PUBLIC_IP']))
+		output.print_ok("Nameserver glue records are correct at registrar. [ns1/ns2.{} ↦ {}]".format(env['PRIMARY_HOSTNAME'], env['PUBLIC_IP']))
 
 	elif ip == env['PUBLIC_IP']:
 		# The NS records are not what we expect, but the domain resolves correctly, so
 		# the user may have set up external DNS. List this discrepancy as a warning.
-		output.print_warning("""Nameserver glue records (ns1.%s and ns2.%s) should be configured at your domain name
+		output.print_warning("""Nameserver glue records (ns1.{} and ns2.{}) should be configured at your domain name
-			registrar as having the IP address of this box (%s). They currently report addresses of %s. If you have set up External DNS, this may be OK."""
+			registrar as having the IP address of this box ({}). They currently report addresses of {}. If you have set up External DNS, this may be OK.""".format(env['PRIMARY_HOSTNAME'], env['PRIMARY_HOSTNAME'], env['PUBLIC_IP'], ns_ips))
-			% (env['PRIMARY_HOSTNAME'], env['PRIMARY_HOSTNAME'], env['PUBLIC_IP'], ns_ips))
 
 	else:
-		output.print_error("""Nameserver glue records are incorrect. The ns1.%s and ns2.%s nameservers must be configured at your domain name
+		output.print_error("""Nameserver glue records are incorrect. The ns1.{} and ns2.{} nameservers must be configured at your domain name
-			registrar as having the IP address %s. They currently report addresses of %s. It may take several hours for
+			registrar as having the IP address {}. They currently report addresses of {}. It may take several hours for
-			public DNS to update after a change."""
+			public DNS to update after a change.""".format(env['PRIMARY_HOSTNAME'], env['PRIMARY_HOSTNAME'], env['PUBLIC_IP'], ns_ips))
-			% (env['PRIMARY_HOSTNAME'], env['PRIMARY_HOSTNAME'], env['PUBLIC_IP'], ns_ips))
 
 	# Check that PRIMARY_HOSTNAME resolves to PUBLIC_IP[V6] in public DNS.
 	ipv6 = query_dns(domain, "AAAA") if env.get("PUBLIC_IPV6") else None
 	if ip == env['PUBLIC_IP'] and not (ipv6 and env['PUBLIC_IPV6'] and ipv6 != normalize_ip(env['PUBLIC_IPV6'])):
-		output.print_ok("Domain resolves to box's IP address. [%s ↦ %s]" % (env['PRIMARY_HOSTNAME'], my_ips))
+		output.print_ok("Domain resolves to box's IP address. [{} ↦ {}]".format(env['PRIMARY_HOSTNAME'], my_ips))
 	else:
-		output.print_error("""This domain must resolve to your box's IP address (%s) in public DNS but it currently resolves
+		output.print_error("""This domain must resolve to this box's IP address ({}) in public DNS but it currently resolves
-			to %s. It may take several hours for public DNS to update after a change. This problem may result from other
+			to {}. It may take several hours for public DNS to update after a change. This problem may result from other
-			issues listed above."""
+			issues listed above.""".format(my_ips, ip + ((" / " + ipv6) if ipv6 is not None else "")))
-			% (my_ips, ip + ((" / " + ipv6) if ipv6 is not None else "")))
 
 
 	# Check reverse DNS matches the PRIMARY_HOSTNAME. Note that it might not be
 	# a DNS zone if it is a subdomain of another domain we have a zone for.
 	existing_rdns_v4 = query_dns(dns.reversename.from_address(env['PUBLIC_IP']), "PTR")
 	existing_rdns_v6 = query_dns(dns.reversename.from_address(env['PUBLIC_IPV6']), "PTR") if env.get("PUBLIC_IPV6") else None
-	if existing_rdns_v4 == domain and existing_rdns_v6 in (None, domain):
+	if existing_rdns_v4 == domain and existing_rdns_v6 in {None, domain}:
-		output.print_ok("Reverse DNS is set correctly at ISP. [%s ↦ %s]" % (my_ips, env['PRIMARY_HOSTNAME']))
+		output.print_ok("Reverse DNS is set correctly at ISP. [{} ↦ {}]".format(my_ips, env['PRIMARY_HOSTNAME']))
 	elif existing_rdns_v4 == existing_rdns_v6 or existing_rdns_v6 is None:
-		output.print_error("""Your box's reverse DNS is currently %s, but it should be %s. Your ISP or cloud provider will have instructions
+		output.print_error(f"""This box's reverse DNS is currently {existing_rdns_v4}, but it should be {domain}. Your ISP or cloud provider will have instructions
-			on setting up reverse DNS for your box.""" % (existing_rdns_v4, domain) )
+			on setting up reverse DNS for this box.""" )
 	else:
-		output.print_error("""Your box's reverse DNS is currently %s (IPv4) and %s (IPv6), but it should be %s. Your ISP or cloud provider will have instructions
+		output.print_error(f"""This box's reverse DNS is currently {existing_rdns_v4} (IPv4) and {existing_rdns_v6} (IPv6), but it should be {domain}. Your ISP or cloud provider will have instructions
-			on setting up reverse DNS for your box.""" % (existing_rdns_v4, existing_rdns_v6, domain) )
+			on setting up reverse DNS for this box.""" )
 
 	# Check the TLSA record.
 	tlsa_qname = "_25._tcp." + domain
 	tlsa25 = query_dns(tlsa_qname, "TLSA", nxdomain=None)
 	tlsa25_expected = build_tlsa_record(env)
 	if tlsa25 == tlsa25_expected:
-		output.print_ok("""The DANE TLSA record for incoming mail is correct (%s).""" % tlsa_qname,)
+		output.print_ok(f"""The DANE TLSA record for incoming mail is correct ({tlsa_qname}).""",)
 	elif tlsa25 is None:
 		if has_dnssec:
 			# Omit a warning about it not being set if DNSSEC isn't enabled,
 			# since TLSA shouldn't be used without DNSSEC.
 			output.print_warning("""The DANE TLSA record for incoming mail is not set. This is optional.""")
 	else:
-		output.print_error("""The DANE TLSA record for incoming mail (%s) is not correct. It is '%s' but it should be '%s'.
+		output.print_error(f"""The DANE TLSA record for incoming mail ({tlsa_qname}) is not correct. It is '{tlsa25}' but it should be '{tlsa25_expected}'.
-			It may take several hours for public DNS to update after a change."""
+			It may take several hours for public DNS to update after a change.""")
-                        % (tlsa_qname, tlsa25, tlsa25_expected))
 
 	# Check that the hostmaster@ email address exists.
 	check_alias_exists("Hostmaster contact address", "hostmaster@" + domain, env, output)
 
 def check_alias_exists(alias_name, alias, env, output):
-	mail_aliases = dict([(address, receivers) for address, receivers, *_ in get_mail_aliases(env)])
+	mail_aliases = {address: receivers for address, receivers, *_ in get_mail_aliases(env)}
 	if alias in mail_aliases:
 		if mail_aliases[alias]:
-			output.print_ok("%s exists as a mail alias. [%s ↦ %s]" % (alias_name, alias, mail_aliases[alias]))
+			output.print_ok(f"{alias_name} exists as a mail alias. [{alias} ↦ {mail_aliases[alias]}]")
 		else:
-			output.print_error("""You must set the destination of the mail alias for %s to direct email to you or another administrator.""" % alias)
+			output.print_error(f"""You must set the destination of the mail alias for {alias} to direct email to you or another administrator.""")
 	else:
-		output.print_error("""You must add a mail alias for %s which directs email to you or another administrator.""" % alias)
+		output.print_error(f"""You must add a mail alias for {alias} which directs email to you or another administrator.""")
 
 def check_dns_zone(domain, env, output, dns_zonefiles):
 	# If a DS record is set at the registrar, check DNSSEC first because it will affect the NS query.
@@ -505,44 +555,69 @@ def check_dns_zone(domain, env, output, dns_zonefiles):
 	secondary_ns = custom_secondary_ns or ["ns2." + env['PRIMARY_HOSTNAME']]
 
 	existing_ns = query_dns(domain, "NS")
-	correct_ns = "; ".join(sorted(["ns1." + env['PRIMARY_HOSTNAME']] + secondary_ns))
+	correct_ns = "; ".join(sorted(["ns1." + env["PRIMARY_HOSTNAME"], *secondary_ns]))
 	ip = query_dns(domain, "A")
 
 	probably_external_dns = False
 
 	if existing_ns.lower() == correct_ns.lower():
-		output.print_ok("Nameservers are set correctly at registrar. [%s]" % correct_ns)
+		output.print_ok(f"Nameservers are set correctly at registrar. [{correct_ns}]")
 	elif ip == correct_ip:
 		# The domain resolves correctly, so maybe the user is using External DNS.
-		output.print_warning("""The nameservers set on this domain at your domain name registrar should be %s. They are currently %s.
+		output.print_warning(f"""The nameservers set on this domain at your domain name registrar should be {correct_ns}. They are currently {existing_ns}.
-			If you are using External DNS, this may be OK."""
+			If you are using External DNS, this may be OK.""" )
-				% (correct_ns, existing_ns) )
 		probably_external_dns = True
 	else:
-		output.print_error("""The nameservers set on this domain are incorrect. They are currently %s. Use your domain name registrar's
+		output.print_error(f"""The nameservers set on this domain are incorrect. They are currently {existing_ns}. Use your domain name registrar's
-			control panel to set the nameservers to %s."""
+			control panel to set the nameservers to {correct_ns}.""" )
-				% (existing_ns, correct_ns) )
 
 	# Check that each custom secondary nameserver resolves the IP address.
 
 	if custom_secondary_ns and not probably_external_dns:
+		SOARecord = query_dns(domain, "SOA", at=env['PUBLIC_IP'])# Explicitly ask the local dns server.
+
 		for ns in custom_secondary_ns:
 			# We must first resolve the nameserver to an IP address so we can query it.
 			ns_ips = query_dns(ns, "A")
-			if not ns_ips:
+			if not ns_ips or ns_ips in {'[Not Set]', '[timeout]'}:
-				output.print_error("Secondary nameserver %s is not valid (it doesn't resolve to an IP address)." % ns)
+				output.print_error(f"Secondary nameserver {ns} is not valid (it doesn't resolve to an IP address).")
 				continue
 			# Choose the first IP if nameserver returns multiple
 			ns_ip = ns_ips.split('; ')[0]
+			
+			# No need to check if we could not obtain the SOA record
+			if SOARecord == '[timeout]':
+				checkSOA = False
+			else:			
+				checkSOA = True
 
 			# Now query it to see what it says about this domain.
 			ip = query_dns(domain, "A", at=ns_ip, nxdomain=None)
 			if ip == correct_ip:
-				output.print_ok("Secondary nameserver %s resolved the domain correctly." % ns)
+				output.print_ok(f"Secondary nameserver {ns} resolved the domain correctly.")
 			elif ip is None:
-				output.print_error("Secondary nameserver %s is not configured to resolve this domain." % ns)
+				output.print_error(f"Secondary nameserver {ns} is not configured to resolve this domain.")
+				# No need to check SOA record if not configured as nameserver
+				checkSOA = False
+			elif ip == '[timeout]':
+				output.print_error(f"Secondary nameserver {ns} did not resolve this domain, result: {ip}")
+				checkSOA = False
 			else:
-				output.print_error("Secondary nameserver %s is not configured correctly. (It resolved this domain as %s. It should be %s.)" % (ns, ip, correct_ip))
+				output.print_error(f"Secondary nameserver {ns} is not configured correctly. (It resolved this domain as {ip}. It should be {correct_ip}.)")
+
+			if checkSOA:
+				# Check that secondary DNS server is synchronized with our primary DNS server. Simplified by checking the SOA record which has a version number
+				SOASecondary = query_dns(domain, "SOA", at=ns_ip)
+
+				if SOARecord == SOASecondary:
+					output.print_ok(f"Secondary nameserver {ns} has consistent SOA record.")
+				elif SOASecondary == '[Not Set]':
+					output.print_error(f"Secondary nameserver {ns} has no SOA record configured.")
+				elif SOASecondary == '[timeout]':
+					output.print_warning(f"Secondary nameserver {ns} timed out on checking SOA record.")
+				else:
+					output.print_error(f"""Secondary nameserver {ns} has inconsistent SOA record (primary: {SOARecord} versus secondary: {SOASecondary}).
+					Check that synchronization between secondary and primary DNS servers is properly set-up.""")
 
 def check_dns_zone_suggestions(domain, env, output, dns_zonefiles, domains_with_a_records):
 	# Warn if a custom DNS record is preventing this or the automatic www redirect from
@@ -550,7 +625,7 @@ def check_dns_zone_suggestions(domain, env, output, dns_zonefiles, domains_with_
 	if domain in domains_with_a_records:
 		output.print_warning("""Web has been disabled for this domain because you have set a custom DNS record.""")
 	if "www." + domain in domains_with_a_records:
-		output.print_warning("""A redirect from 'www.%s' has been disabled for this domain because you have set a custom DNS record on the www subdomain.""" % domain)
+		output.print_warning(f"""A redirect from 'www.{domain}' has been disabled for this domain because you have set a custom DNS record on the www subdomain.""")
 
 	# Since DNSSEC is optional, if a DS record is NOT set at the registrar suggest it.
 	# (If it was set, we did the check earlier.)
@@ -571,7 +646,7 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 	expected_ds_records = { }
 	ds_file = '/etc/nsd/zones/' + dns_zonefiles[domain] + '.ds'
 	if not os.path.exists(ds_file): return # Domain is in our database but DNS has not yet been updated.
-	with open(ds_file) as f:
+	with open(ds_file, encoding="utf-8") as f:
 		for rr_ds in f:
 			rr_ds = rr_ds.rstrip()
 			ds_keytag, ds_alg, ds_digalg, ds_digest = rr_ds.split("\t")[4].split(" ")
@@ -579,10 +654,11 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 			# Some registrars may want the public key so they can compute the digest. The DS
 			# record that we suggest using is for the KSK (and that's how the DS records were generated).
 			# We'll also give the nice name for the key algorithm.
-			dnssec_keys = load_env_vars_from_file(os.path.join(env['STORAGE_ROOT'], 'dns/dnssec/%s.conf' % alg_name_map[ds_alg]))
+			dnssec_keys = load_env_vars_from_file(os.path.join(env['STORAGE_ROOT'], f'dns/dnssec/{alg_name_map[ds_alg]}.conf'))
-			dnsssec_pubkey = open(os.path.join(env['STORAGE_ROOT'], 'dns/dnssec/' + dnssec_keys['KSK'] + '.key')).read().split("\t")[3].split(" ")[3]
+			with open(os.path.join(env['STORAGE_ROOT'], 'dns/dnssec/' + dnssec_keys['KSK'] + '.key'), encoding="utf-8") as f:
+				dnsssec_pubkey = f.read().split("\t")[3].split(" ")[3]
 
-			expected_ds_records[ (ds_keytag, ds_alg, ds_digalg, ds_digest) ] = {
+			expected_ds_records[ ds_keytag, ds_alg, ds_digalg, ds_digest ] = {
 				"record": rr_ds,
 				"keytag": ds_keytag,
 				"alg": ds_alg,
@@ -612,17 +688,19 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 			#
 			# But it may not be preferred. Only algorithm 13 is preferred. Warn if any of the
 			# matched zones uses a different algorithm.
-			if set(r[1] for r in matched_ds) == { '13' }: # all are alg 13
+			if {r[1] for r in matched_ds} == { '13' } and {r[2] for r in matched_ds} <= { '2', '4' }: # all are alg 13 and digest type 2 or 4
 				output.print_ok("DNSSEC 'DS' record is set correctly at registrar.")
 				return
-			elif '13' in set(r[1] for r in matched_ds): # some but not all are alg 13
+			if len([r for r in matched_ds if r[1] == '13' and r[2] in { '2', '4' }]) > 0: # some but not all are alg 13
-				output.print_ok("DNSSEC 'DS' record is set correctly at registrar. (Records using algorithm other than ECDSAP256SHA256 should be removed.)")
+				output.print_ok("DNSSEC 'DS' record is set correctly at registrar. (Records using algorithm other than ECDSAP256SHA256 and digest types other than SHA-256/384 should be removed.)")
 				return
-			else: # no record uses alg 13
+			# no record uses alg 13
-				output.print_warning("DNSSEC 'DS' record set at registrar is valid but should be updated to ECDSAP256SHA256 (see below).")
+			output.print_warning("""DNSSEC 'DS' record set at registrar is valid but should be updated to ECDSAP256SHA256 and SHA-256 (see below).
+				IMPORTANT: Do not delete existing DNSSEC 'DS' records for this domain until confirmation that the new DNSSEC 'DS' record
+				for this domain is valid.""")
 		else:
 			if is_checking_primary:
-				output.print_error("""The DNSSEC 'DS' record for %s is incorrect. See further details below.""" % domain)
+				output.print_error(f"""The DNSSEC 'DS' record for {domain} is incorrect. See further details below.""")
 				return
 			output.print_error("""This domain's DNSSEC DS record is incorrect. The chain of trust is broken between the public DNS system
 				and this machine's DNS server. It may take several hours for public DNS to update after a change. If you did not recently
@@ -630,7 +708,8 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 
 	output.print_line("""Follow the instructions provided by your domain name registrar to set a DS record.
 		Registrars support different sorts of DS records. Use the first option that works:""")
-	preferred_ds_order = [(7, 1), (7, 2), (8, 4), (13, 4), (8, 1), (8, 2), (13, 1), (13, 2)] # low to high
+	preferred_ds_order = [(7, 2), (8, 4), (13, 4), (8, 2), (13, 2)] # low to high, see https://github.com/mail-in-a-box/mailinabox/issues/1998
+
 	def preferred_ds_order_func(ds_suggestion):
 		k = (int(ds_suggestion['alg']), int(ds_suggestion['digalg']))
 		if k in preferred_ds_order:
@@ -638,13 +717,14 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 		return -1 # index before first item
 	output.print_line("")
 	for i, ds_suggestion in enumerate(sorted(expected_ds_records.values(), key=preferred_ds_order_func, reverse=True)):
+		if preferred_ds_order_func(ds_suggestion) == -1: continue # don't offer record types that the RFC says we must not offer
 		output.print_line("")
 		output.print_line("Option " + str(i+1) + ":")
 		output.print_line("----------")
 		output.print_line("Key Tag: " + ds_suggestion['keytag'])
-		output.print_line("Key Flags: KSK")
+		output.print_line("Key Flags: KSK / 257")
-		output.print_line("Algorithm: %s / %s" % (ds_suggestion['alg'], ds_suggestion['alg_name']))
+		output.print_line("Algorithm: {} / {}".format(ds_suggestion['alg'], ds_suggestion['alg_name']))
-		output.print_line("Digest Type: %s / %s" % (ds_suggestion['digalg'], ds_suggestion['digalg_name']))
+		output.print_line("Digest Type: {} / {}".format(ds_suggestion['digalg'], ds_suggestion['digalg_name']))
 		output.print_line("Digest: " + ds_suggestion['digest'])
 		output.print_line("Public Key: ")
 		output.print_line(ds_suggestion['pubkey'], monospace=True)
@@ -654,8 +734,8 @@ def check_dnssec(domain, env, output, dns_zonefiles, is_checking_primary=False):
 	if len(ds) > 0:
 		output.print_line("")
 		output.print_line("The DS record is currently set to:")
-		for rr in ds:
+		for rr in sorted(ds):
-			output.print_line("Key Tag: {0}, Algorithm: {1}, Digest Type: {2}, Digest: {3}".format(*rr))
+			output.print_line("Key Tag: {}, Algorithm: {}, Digest Type: {}, Digest: {}".format(*rr))
 
 def check_mail_domain(domain, env, output):
 	# Check the MX record.
@@ -663,21 +743,19 @@ def check_mail_domain(domain, env, output):
 	recommended_mx = "10 " + env['PRIMARY_HOSTNAME']
 	mx = query_dns(domain, "MX", nxdomain=None)
 
-	if mx is None:
+	if mx is None or mx == "[timeout]":
-		mxhost = None
-	elif mx == "[timeout]":
 		mxhost = None
 	else:
 		# query_dns returns a semicolon-delimited list
 		# of priority-host pairs.
 		mxhost = mx.split('; ')[0].split(' ')[1]
 
-	if mxhost == None:
+	if mxhost is None:
 		# A missing MX record is okay on the primary hostname because
 		# the primary hostname's A record (the MX fallback) is... itself,
 		# which is what we want the MX to be.
 		if domain == env['PRIMARY_HOSTNAME']:
-			output.print_ok("Domain's email is directed to this domain. [%s has no MX record, which is ok]" % (domain,))
+			output.print_ok(f"Domain's email is directed to this domain. [{domain} has no MX record, which is ok]")
 
 		# And a missing MX record is okay on other domains if the A record
 		# matches the A record of the PRIMARY_HOSTNAME. Actually this will
@@ -685,35 +763,35 @@ def check_mail_domain(domain, env, output):
 		else:
 			domain_a = query_dns(domain, "A", nxdomain=None)
 			primary_a = query_dns(env['PRIMARY_HOSTNAME'], "A", nxdomain=None)
-			if domain_a != None and domain_a == primary_a:
+			if domain_a is not None and domain_a == primary_a:
-				output.print_ok("Domain's email is directed to this domain. [%s has no MX record but its A record is OK]" % (domain,))
+				output.print_ok(f"Domain's email is directed to this domain. [{domain} has no MX record but its A record is OK]")
 			else:
-				output.print_error("""This domain's DNS MX record is not set. It should be '%s'. Mail will not
+				output.print_error(f"""This domain's DNS MX record is not set. It should be '{recommended_mx}'. Mail will not
 					be delivered to this box. It may take several hours for public DNS to update after a
-					change. This problem may result from other issues listed here.""" % (recommended_mx,))
+					change. This problem may result from other issues listed here.""")
 
 	elif mxhost == env['PRIMARY_HOSTNAME']:
-		good_news = "Domain's email is directed to this domain. [%s ↦ %s]" % (domain, mx)
+		good_news = f"Domain's email is directed to this domain. [{domain} ↦ {mx}]"
 		if mx != recommended_mx:
-			good_news += "  This configuration is non-standard.  The recommended configuration is '%s'." % (recommended_mx,)
+			good_news += f"  This configuration is non-standard.  The recommended configuration is '{recommended_mx}'."
 		output.print_ok(good_news)
 
 		# Check MTA-STS policy.
-		loop = asyncio.get_event_loop()
+		loop = asyncio.new_event_loop()
 		sts_resolver = postfix_mta_sts_resolver.resolver.STSResolver(loop=loop)
 		valid, policy = loop.run_until_complete(sts_resolver.resolve(domain))
 		if valid == postfix_mta_sts_resolver.resolver.STSFetchResult.VALID:
 			if policy[1].get("mx") == [env['PRIMARY_HOSTNAME']] and policy[1].get("mode") == "enforce": # policy[0] is the policyid
 				output.print_ok("MTA-STS policy is present.")
 			else:
-				output.print_error("MTA-STS policy is present but has unexpected settings. [{}]".format(policy[1]))
+				output.print_error(f"MTA-STS policy is present but has unexpected settings. [{policy[1]}]")
 		else:
-			output.print_error("MTA-STS policy is missing: {}".format(valid))
+			output.print_error(f"MTA-STS policy is missing: {valid}")
 
 	else:
-		output.print_error("""This domain's DNS MX record is incorrect. It is currently set to '%s' but should be '%s'. Mail will not
+		output.print_error(f"""This domain's DNS MX record is incorrect. It is currently set to '{mx}' but should be '{recommended_mx}'. Mail will not
 			be delivered to this box. It may take several hours for public DNS to update after a change. This problem may result from
-			other issues listed here.""" % (mx, recommended_mx))
+			other issues listed here.""")
 
 	# Check that the postmaster@ email address exists. Not required if the domain has a
 	# catch-all address or domain alias.
@@ -723,15 +801,26 @@ def check_mail_domain(domain, env, output):
 	# Stop if the domain is listed in the Spamhaus Domain Block List.
 	# The user might have chosen a domain that was previously in use by a spammer
 	# and will not be able to reliably send mail.
+	
+	# See https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now. for
+	# information on spamhaus return codes
 	dbl = query_dns(domain+'.dbl.spamhaus.org', "A", nxdomain=None)
 	if dbl is None:
 		output.print_ok("Domain is not blacklisted by dbl.spamhaus.org.")
 	elif dbl == "[timeout]":
-		output.print_warning("Connection to dbl.spamhaus.org timed out. We could not determine whether the domain {} is blacklisted. Please try again later.".format(domain))
+		output.print_warning(f"Connection to dbl.spamhaus.org timed out. Could not determine whether the domain {domain} is blacklisted. Please try again later.")
+	elif dbl == "[Not Set]":
+		output.print_warning(f"Could not connect to dbl.spamhaus.org. Could not determine whether the domain {domain} is blacklisted. Please try again later.")
+	elif dbl == "127.255.255.252":
+		output.print_warning("Incorrect spamhaus query: {}. Could not determine whether the domain {} is blacklisted.".format(domain+'.dbl.spamhaus.org', domain))
+	elif dbl == "127.255.255.254":
+		output.print_warning(f"Mail-in-a-Box is configured to use a public DNS server. This is not supported by spamhaus. Could not determine whether the domain {domain} is blacklisted.")
+	elif dbl == "127.255.255.255":
+		output.print_warning(f"Too many queries have been performed on the spamhaus server. Could not determine whether the domain {domain} is blacklisted.")
 	else:
-		output.print_error("""This domain is listed in the Spamhaus Domain Block List (code %s),
+		output.print_error(f"""This domain is listed in the Spamhaus Domain Block List (code {dbl}),
 			which may prevent recipients from receiving your mail.
-			See http://www.spamhaus.org/dbl/ and http://www.spamhaus.org/query/domain/%s.""" % (dbl, domain))
+			See http://www.spamhaus.org/dbl/ and http://www.spamhaus.org/query/domain/{domain}.""")
 
 def check_web_domain(domain, rounded_time, ssl_certificates, env, output):
 	# See if the domain's A record resolves to our PUBLIC_IP. This is already checked
@@ -745,13 +834,13 @@ def check_web_domain(domain, rounded_time, ssl_certificates, env, output):
 			if value == normalize_ip(expected):
 				ok_values.append(value)
 			else:
-				output.print_error("""This domain should resolve to your box's IP address (%s %s) if you would like the box to serve
+				output.print_error(f"""This domain should resolve to this box's IP address ({rtype} {expected}) if you would like the box to serve
-					webmail or a website on this domain. The domain currently resolves to %s in public DNS. It may take several hours for
+					webmail or a website on this domain. The domain currently resolves to {value} in public DNS. It may take several hours for
-					public DNS to update after a change. This problem may result from other issues listed here.""" % (rtype, expected, value))
+					public DNS to update after a change. This problem may result from other issues listed here.""")
 				return
 
 		# If both A and AAAA are correct...
-		output.print_ok("Domain resolves to this box's IP address. [%s ↦ %s]" % (domain, '; '.join(ok_values)))
+		output.print_ok("Domain resolves to this box's IP address. [{} ↦ {}]".format(domain, '; '.join(ok_values)))
 
 
 	# We need a TLS certificate for PRIMARY_HOSTNAME because that's where the
@@ -772,16 +861,21 @@ def query_dns(qname, rtype, nxdomain='[Not Set]', at=None, as_list=False):
 	# running bind server), or if the 'at' argument is specified, use that host
 	# as the nameserver.
 	resolver = dns.resolver.get_default_resolver()
-	if at:
+
+	# Make sure at is not a string that cannot be used as a nameserver
+	if at and at not in {'[Not set]', '[timeout]'}:
 		resolver = dns.resolver.Resolver()
 		resolver.nameservers = [at]
 
 	# Set a timeout so that a non-responsive server doesn't hold us back.
 	resolver.timeout = 5
+	# The number of seconds to spend trying to get an answer to the question. If the
+	# lifetime expires a dns.exception.Timeout exception will be raised.
+	resolver.lifetime = 5
 
 	# Do the query.
 	try:
-		response = resolver.query(qname, rtype)
+		response = resolver.resolve(qname, rtype)
 	except (dns.resolver.NoNameservers, dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
 		# Host did not have an answer for this query; not sure what the
 		# difference is between the two exceptions.
@@ -793,7 +887,7 @@ def query_dns(qname, rtype, nxdomain='[Not Set]', at=None, as_list=False):
 	# be expressed in equivalent string forms. Canonicalize the form before
 	# returning them. The caller should normalize any IP addresses the result
 	# of this method is compared with.
-	if rtype in ("A", "AAAA"):
+	if rtype in {"A", "AAAA"}:
 		response = [normalize_ip(str(r)) for r in response]
 
 	if as_list:
@@ -809,7 +903,7 @@ def check_ssl_cert(domain, rounded_time, ssl_certificates, env, output):
 	# Check that TLS certificate is signed.
 
 	# Skip the check if the A record is not pointed here.
-	if query_dns(domain, "A", None) not in (env['PUBLIC_IP'], None): return
+	if query_dns(domain, "A", None) not in {env['PUBLIC_IP'], None}: return
 
 	# Where is the certificate file stored?
 	tls_cert = get_domain_ssl_files(domain, ssl_certificates, env, allow_missing_cert=True)
@@ -879,22 +973,20 @@ def list_apt_updates(apt_update=True):
 	return pkgs
 
 def what_version_is_this(env):
-	# This function runs `git describe --abbrev=0` on the Mail-in-a-Box installation directory.
+	# This function runs `git describe --always --abbrev=0` on the Mail-in-a-Box installation directory.
 	# Git may not be installed and Mail-in-a-Box may not have been cloned from github,
 	# so this function may raise all sorts of exceptions.
 	miab_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-	tag = shell("check_output", ["/usr/bin/git", "describe", "--abbrev=0"], env={"GIT_DIR": os.path.join(miab_dir, '.git')}).strip()
+	return shell("check_output", ["/usr/bin/git", "describe", "--always", "--abbrev=0"], env={"GIT_DIR": os.path.join(miab_dir, '.git')}).strip()
-	return tag
 
 def get_latest_miab_version():
 	# This pings https://mailinabox.email/setup.sh and extracts the tag named in
 	# the script to determine the current product version.
     from urllib.request import urlopen, HTTPError, URLError
-    from socket import timeout
 
     try:
         return re.search(b'TAG=(.*)', urlopen("https://mailinabox.email/setup.sh?ping=1", timeout=5).read()).group(1).decode("utf8")
-    except (HTTPError, URLError, timeout):
+    except (TimeoutError, HTTPError, URLError):
         return None
 
 def check_miab_version(env, output):
@@ -906,17 +998,16 @@ def check_miab_version(env, output):
 		this_ver = "Unknown"
 
 	if config.get("privacy", True):
-		output.print_warning("You are running version Mail-in-a-Box %s. Mail-in-a-Box version check disabled by privacy setting." % this_ver)
+		output.print_warning(f"You are running version Mail-in-a-Box {this_ver}. Mail-in-a-Box version check disabled by privacy setting.")
 	else:
 		latest_ver = get_latest_miab_version()
 
 		if this_ver == latest_ver:
-			output.print_ok("Mail-in-a-Box is up to date. You are running version %s." % this_ver)
+			output.print_ok(f"Mail-in-a-Box is up to date. You are running version {this_ver}.")
 		elif latest_ver is None:
-			output.print_error("Latest Mail-in-a-Box version could not be determined. You are running version %s." % this_ver)
+			output.print_error(f"Latest Mail-in-a-Box version could not be determined. You are running version {this_ver}.")
 		else:
-			output.print_error("A new version of Mail-in-a-Box is available. You are running version %s. The latest version is %s. For upgrade instructions, see https://mailinabox.email. "
+			output.print_error(f"A new version of Mail-in-a-Box is available. You are running version {this_ver}. The latest version is {latest_ver}. For upgrade instructions, see https://mailinabox.email. ")
-				% (this_ver, latest_ver))
 
 def run_and_output_changes(env, pool):
 	import json
@@ -931,7 +1022,11 @@ def run_and_output_changes(env, pool):
 	# Load previously saved status checks.
 	cache_fn = "/var/cache/mailinabox/status_checks.json"
 	if os.path.exists(cache_fn):
-		prev = json.load(open(cache_fn))
+		with open(cache_fn, encoding="utf-8") as f:
+			try:
+				prev = json.load(f)
+			except json.JSONDecodeError:
+				prev = []
 
 		# Group the serial output into categories by the headings.
 		def group_by_heading(lines):
@@ -966,14 +1061,14 @@ def run_and_output_changes(env, pool):
 						out.add_heading(category + " -- Previously:")
 					elif op == "delete":
 						out.add_heading(category + " -- Removed")
-					if op in ("replace", "delete"):
+					if op in {"replace", "delete"}:
 						BufferedOutput(with_lines=prev_lines[i1:i2]).playback(out)
 
 					if op == "replace":
 						out.add_heading(category + " -- Currently:")
 					elif op == "insert":
 						out.add_heading(category + " -- Added")
-					if op in ("replace", "insert"):
+					if op in {"replace", "insert"}:
 						BufferedOutput(with_lines=cur_lines[j1:j2]).playback(out)
 
 		for category, prev_lines in prev_status.items():
@@ -983,7 +1078,7 @@ def run_and_output_changes(env, pool):
 
 	# Store the current status checks output for next time.
 	os.makedirs(os.path.dirname(cache_fn), exist_ok=True)
-	with open(cache_fn, "w") as f:
+	with open(cache_fn, "w", encoding="utf-8") as f:
 		json.dump(cur.buf, f, indent=True)
 
 def normalize_ip(ip):
@@ -1017,8 +1112,8 @@ class FileOutput:
 
 	def print_block(self, message, first_line="   "):
 		print(first_line, end='', file=self.buf)
-		message = re.sub("\n\s*", " ", message)
+		message = re.sub("\n\\s*", " ", message)
-		words = re.split("(\s+)", message)
+		words = re.split(r"(\s+)", message)
 		linelen = 0
 		for w in words:
 			if self.width and (linelen + len(w) > self.width-1-len(first_line)):
@@ -1057,9 +1152,9 @@ class ConsoleOutput(FileOutput):
 class BufferedOutput:
 	# Record all of the instance method calls so we can play them back later.
 	def __init__(self, with_lines=None):
-		self.buf = [] if not with_lines else with_lines
+		self.buf = with_lines or []
 	def __getattr__(self, attr):
-		if attr not in ("add_heading", "print_ok", "print_error", "print_warning", "print_block", "print_line"):
+		if attr not in {"add_heading", "print_ok", "print_error", "print_warning", "print_block", "print_line"}:
 			raise AttributeError
 		# Return a function that just records the call & arguments to our buffer.
 		def w(*args, **kwargs):

management/templates/aliases.html

@@ -1,13 +1,13 @@
 <style>
 #alias_table .actions > * { padding-right: 3px; }
-#alias_table .alias-required .remove { display: none }
+#alias_table .alias-auto .actions > * { display: none }
 </style>
 
 <h2>Aliases</h2>
 
 <h3>Add a mail alias</h3>
 
-<p>Aliases are email forwarders. An alias can forward email to a <a href="#" onclick="return show_panel('users')">mail user</a> or to any email address.</p>
+<p>Aliases are email forwarders. An alias can forward email to a <a href="#users">mail user</a> or to any email address.</p>
 
 <p>To use an alias or any address besides your own login username in outbound mail, the sending user must be included as a permitted sender for the alias.</p>
 
@@ -163,7 +163,7 @@ function show_aliases() {
           var n = $("#alias-template").clone();
           n.attr('id', '');
 
-          if (alias.required) n.addClass('alias-required');
+          if (alias.auto) n.addClass('alias-auto');
           n.attr('data-address', alias.address_display); // this is decoded from IDNA, but will get re-coded to IDNA on the backend
           n.find('td.address').text(alias.address_display)
           for (var j = 0; j < alias.forwards_to.length; j++)

management/templates/custom-dns.html

@@ -77,7 +77,7 @@
 
 <h3>Using a secondary nameserver</h3>
 
-<p>If your TLD requires you to have two separate nameservers, you can either set up <a href="#" onclick="return show_panel('external_dns')">external DNS</a> and ignore the DNS server on this box entirely, or use the DNS server on this box but add a secondary (aka &ldquo;slave&rdquo;) nameserver.</p>
+<p>If your TLD requires you to have two separate nameservers, you can either set up <a href="#external_dns">external DNS</a> and ignore the DNS server on this box entirely, or use the DNS server on this box but add a secondary (aka &ldquo;slave&rdquo;) nameserver.</p>
 <p>If you choose to use a secondary nameserver, you must find a secondary nameserver service provider. Your domain name registrar or virtual cloud provider may provide this service for you. Once you set up the secondary nameserver service, enter the hostname (not the IP address) of <em>their</em> secondary nameserver in the box below.</p>
 
 <form class="form-horizontal" role="form" onsubmit="do_set_secondary_dns(); return false;">
@@ -96,7 +96,7 @@
     <div class="col-sm-offset-1 col-sm-11">
       <p class="small">
         Multiple secondary servers can be separated with commas or spaces (i.e., <code>ns2.hostingcompany.com ns3.hostingcompany.com</code>).
-        To enable zone transfers to additional servers without listing them as secondary nameservers, add an IP address or subnet using <code>xfr:10.20.30.40</code> or <code>xfr:10.0.0.0/8</code>.
+        To enable zone transfers to additional servers without listing them as secondary nameservers, prefix a hostname, IP address, or subnet with <code>xfr:</code>, e.g. <code>xfr:10.20.30.40</code> or <code>xfr:10.0.0.0/8</code>.
       </p>
       <p id="secondarydns-clear-instructions" style="display: none" class="small">
         Clear the input field above and click Update to use this machine itself as secondary DNS, which is the default/normal setup.

management/templates/external-dns.html

@@ -38,7 +38,7 @@
 <p class="alert" role="alert">
 	<span class="glyphicon glyphicon-info-sign"></span>
 	You may encounter zone file errors when attempting to create a TXT record with a long string.
-	<a href="http://tools.ietf.org/html/rfc4408#section-3.1.3">RFC 4408</a> states a TXT record is allowed to contain multiple strings, and this technique can be used to construct records that would exceed the 255-byte maximum length.
+	<a href="https://tools.ietf.org/html/rfc4408#section-3.1.3">RFC 4408</a> states a TXT record is allowed to contain multiple strings, and this technique can be used to construct records that would exceed the 255-byte maximum length.
 	You may need to adopt this technique when adding DomainKeys. Use a tool like <code>named-checkzone</code> to validate your zone file.
 </p>
 

management/templates/index.html

@@ -11,9 +11,9 @@
 
         <link rel="stylesheet" href="/admin/assets/bootstrap/css/bootstrap.min.css">
         <style>
-	    body {
+            body {
-		overflow-y: scroll;
+              overflow-y: scroll;
-                padding-bottom: 20px;
+              padding-bottom: 20px;
             }
 
             p {
@@ -36,20 +36,20 @@
               margin-bottom: 13px;
               margin-top: 30px;
             }
-              .panel-heading h3 {
+            .panel-heading h3 {
-                border: none;
+              border: none;
-                padding: 0;
+              padding: 0;
-                margin: 0;
+              margin: 0;
-              }
+            }
 
             h4 {
               font-size: 110%;
               margin-bottom: 13px;
               margin-top: 18px;
             }
-              h4:first-child {
+            h4:first-child {
-                margin-top: 6px;
+              margin-top: 6px;
-              }
+            }
 
             .admin_panel {
               display: none;
@@ -59,9 +59,35 @@
               margin: 1.5em 0;
             }
 
-	    ol li {
+            ol li {
-	       margin-bottom: 1em;
+              margin-bottom: 1em;
-	    }
+            }
+
+            .if-logged-in { display: none; }
+            .if-logged-in-admin { display: none; }
+
+      /* The below only gets used if it is supported */
+      @media (prefers-color-scheme: dark) {
+        /* Invert invert lightness but not hue */
+        html {
+          filter: invert(100%) hue-rotate(180deg);
+        }
+
+        /* Override Bootstrap theme here to give more contrast. The black turns to white by the filter. */
+        .form-control {
+          color: black !important;
+        }
+
+        /* Revert the invert for the navbar */
+        button, div.navbar {
+          filter: invert(100%) hue-rotate(180deg);
+        }
+
+        /* Revert the revert for the dropdowns */
+        ul.dropdown-menu {
+          filter: invert(100%) hue-rotate(180deg);
+        }
+      }
         </style>
         <link rel="stylesheet" href="/admin/assets/bootstrap/css/bootstrap-theme.min.css">
     </head>
@@ -83,41 +109,46 @@
         </div>
         <div class="navbar-collapse collapse">
           <ul class="nav navbar-nav">
-            <li class="dropdown">
+            <li class="dropdown if-logged-in-admin">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown">System <b class="caret"></b></a>
               <ul class="dropdown-menu">
-                <li><a href="#system_status" onclick="return show_panel(this);">Status Checks</a></li>
+                <li><a href="#system_status">Status Checks</a></li>
-                <li><a href="#tls" onclick="return show_panel(this);">TLS (SSL) Certificates</a></li>
+                <li><a href="#tls">TLS (SSL) Certificates</a></li>
-                <li><a href="#system_backup" onclick="return show_panel(this);">Backup Status</a></li>
+                <li><a href="#system_backup">Backup Status</a></li>
                 <li class="divider"></li>
                 <li class="dropdown-header">Advanced Pages</li>
-                <li><a href="#custom_dns" onclick="return show_panel(this);">Custom DNS</a></li>
+                <li><a href="#custom_dns">Custom DNS</a></li>
-                <li><a href="#external_dns" onclick="return show_panel(this);">External DNS</a></li>
+                <li><a href="#external_dns">External DNS</a></li>
-                <li><a href="/admin/munin" target="_blank">Munin Monitoring</a></li>
+                <li><a href="#munin">Munin Monitoring</a></li>
               </ul>
             </li>
-            <li class="dropdown">
+            <li><a href="#mail-guide" class="if-logged-in-not-admin">Mail</a></li>
+            <li class="dropdown if-logged-in-admin">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown">Mail &amp; Users <b class="caret"></b></a>
               <ul class="dropdown-menu">
-                <li><a href="#mail-guide" onclick="return show_panel(this);">Instructions</a></li>
+                <li><a href="#mail-guide">Instructions</a></li>
-                <li><a href="#users" onclick="return show_panel(this);">Users</a></li>
+                <li><a href="#users">Users</a></li>
-                <li><a href="#aliases" onclick="return show_panel(this);">Aliases</a></li>
+                <li><a href="#aliases">Aliases</a></li>
                 <li class="divider"></li>
                 <li class="dropdown-header">Your Account</li>
-                <li><a href="#mfa" onclick="return show_panel(this);">Two-Factor Authentication</a></li>
+                <li><a href="#mfa">Two-Factor Authentication</a></li>
               </ul>
             </li>
-            <li><a href="#sync_guide" onclick="return show_panel(this);">Contacts/Calendar</a></li>
+            <li><a href="#sync_guide" class="if-logged-in">Contacts/Calendar</a></li>
-            <li><a href="#web" onclick="return show_panel(this);">Web</a></li>
+            <li><a href="#web" class="if-logged-in-admin">Web</a></li>
           </ul>
           <ul class="nav navbar-nav navbar-right">
-            <li><a href="#" onclick="do_logout(); return false;" style="color: white">Log out</a></li>
+            <li class="if-logged-in"><a href="#" onclick="do_logout(); return false;" style="color: white">Log out</a></li>
           </ul>
         </div><!--/.navbar-collapse -->
       </div>
     </div>
 
     <div class="container">
+      <div id="panel_welcome" class="admin_panel">
+      {% include "welcome.html" %}
+      </div>
+
       <div id="panel_system_status" class="admin_panel">
       {% include "system-status.html" %}
       </div>
@@ -166,6 +197,10 @@
       {% include "ssl.html" %}
       </div>
 
+      <div id="panel_munin" class="admin_panel">
+      {% include "munin.html" %}
+      </div>
+
       <hr>
 
       <footer>
@@ -298,7 +333,7 @@ function ajax_with_indicator(options) {
   return false; // handy when called from onclick
 }
 
-var api_credentials = ["", ""];
+var api_credentials = null;
 function api(url, method, data, callback, callback_error, headers) {
   // from http://www.webtoolkit.info/javascript-base64.html
   function base64encode(input) {
@@ -346,9 +381,10 @@ function api(url, method, data, callback, callback_error, headers) {
       // We don't store user credentials in a cookie to avoid the hassle of CSRF
       // attacks. The Authorization header only gets set in our AJAX calls triggered
       // by user actions.
-      xhr.setRequestHeader(
+      if (api_credentials)
-        'Authorization',
+        xhr.setRequestHeader(
-        'Basic ' + base64encode(api_credentials[0] + ':' + api_credentials[1]));
+          'Authorization',
+          'Basic ' + base64encode(api_credentials.username + ':' + api_credentials.session_key));
     },
     success: callback,
     error: callback_error || default_error,
@@ -356,7 +392,9 @@ function api(url, method, data, callback, callback_error, headers) {
       403: function(xhr) {
         // Credentials are no longer valid. Try to login again.
         var p = current_panel;
+        clear_credentials();
         show_panel('login');
+        show_hide_menus();
         switch_back_to_panel = p;
       }
     }
@@ -366,43 +404,68 @@ function api(url, method, data, callback, callback_error, headers) {
 var current_panel = null;
 var switch_back_to_panel = null;
 
-function do_logout() {
+function clear_credentials() {
-  api_credentials = ["", ""];
+  // Forget the token.
+  api_credentials = null;
   if (typeof localStorage != 'undefined')
     localStorage.removeItem("miab-cp-credentials");
   if (typeof sessionStorage != 'undefined')
     sessionStorage.removeItem("miab-cp-credentials");
+}
+
+function do_logout() {
+  // Clear the session from the backend.
+  api("/logout", "POST");
+
+  // Remove locally stored credentials
+  clear_credentials();
+
+  // Return to the start.
   show_panel('login');
+
+  // Reset menus.
+  show_hide_menus();
 }
 
 function show_panel(panelid) {
-  if (panelid.getAttribute)
+  if (panelid.getAttribute) {
     // we might be passed an HTMLElement <a>.
     panelid = panelid.getAttribute('href').substring(1);
+  }
 
   $('.admin_panel').hide();
   $('#panel_' + panelid).show();
-  if (typeof localStorage != 'undefined')
-    localStorage.setItem("miab-cp-lastpanel", panelid);
   if (window["show_" + panelid])
     window["show_" + panelid]();
 
   current_panel = panelid;
   switch_back_to_panel = null;
-
-  return false; // when called from onclick, cancel navigation
 }
 
+window.onhashchange = function() {
+  var panelid = window.location.hash.substring(1);
+  show_panel(panelid);
+};
+
 $(function() {
   // Recall saved user credentials.
-  if (typeof sessionStorage != 'undefined' && sessionStorage.getItem("miab-cp-credentials"))
+  try {
-    api_credentials = sessionStorage.getItem("miab-cp-credentials").split(":");
+    if (typeof sessionStorage != 'undefined' && sessionStorage.getItem("miab-cp-credentials"))
-  else if (typeof localStorage != 'undefined' && localStorage.getItem("miab-cp-credentials"))
+      api_credentials = JSON.parse(sessionStorage.getItem("miab-cp-credentials"));
-    api_credentials = localStorage.getItem("miab-cp-credentials").split(":");
+    else if (typeof localStorage != 'undefined' && localStorage.getItem("miab-cp-credentials"))
+      api_credentials = JSON.parse(localStorage.getItem("miab-cp-credentials"));
+  } catch (_) {
+  }
+
+  // Toggle menu state.
+  show_hide_menus();
 
   // Recall what the user was last looking at.
-  if (typeof localStorage != 'undefined' && localStorage.getItem("miab-cp-lastpanel")) {
+  if (api_credentials != null && window.location.hash) {
-    show_panel(localStorage.getItem("miab-cp-lastpanel"));
+    var panelid = window.location.hash.substring(1);
+    show_panel(panelid);
+  } else if (api_credentials != null) {
+    show_panel('welcome');
   } else {
     show_panel('login');
   }

management/templates/login.html

@@ -64,7 +64,7 @@ sudo management/cli.py user make-admin me@{{hostname}}</pre>
     <div class="form-group" id="loginOtp">
       <label for="loginOtpInput" class="col-sm-3 control-label">Code</label>
       <div class="col-sm-9">
-          <input type="text" class="form-control" id="loginOtpInput" placeholder="6-digit code">
+          <input type="text" class="form-control" id="loginOtpInput" placeholder="6-digit code" autocomplete="off">
           <div class="help-block" style="margin-top: 5px; font-size: 90%">Enter the six-digit code generated by your two factor authentication app.</div>
       </div>
     </div>
@@ -102,11 +102,11 @@ function do_login() {
   }
 
   // Exchange the email address & password for an API key.
-  api_credentials = [$('#loginEmail').val(), $('#loginPassword').val()]
+  api_credentials = { username: $('#loginEmail').val(), session_key: $('#loginPassword').val() }
 
   api(
-  "/me",
+  "/login",
-  "GET",
+  "POST",
   {},
   function(response) {
     // This API call always succeeds. It returns a JSON object indicating
@@ -141,7 +141,9 @@ function do_login() {
       // Login succeeded.
 
       // Save the new credentials.
-      api_credentials = [response.email, response.api_key];
+      api_credentials = { username: response.email,
+                          session_key: response.api_key,
+                          privileges: response.privileges };
 
       // Try to wipe the username/password information.
       $('#loginEmail').val('');
@@ -152,18 +154,32 @@ function do_login() {
       // Remember the credentials.
       if (typeof localStorage != 'undefined' && typeof sessionStorage != 'undefined') {
         if ($('#loginRemember').val()) {
-          localStorage.setItem("miab-cp-credentials", api_credentials.join(":"));
+          localStorage.setItem("miab-cp-credentials", JSON.stringify(api_credentials));
           sessionStorage.removeItem("miab-cp-credentials");
         } else {
           localStorage.removeItem("miab-cp-credentials");
-          sessionStorage.setItem("miab-cp-credentials", api_credentials.join(":"));
+          sessionStorage.setItem("miab-cp-credentials", JSON.stringify(api_credentials));
         }
       }
 
+      // Toggle menus.
+      show_hide_menus();
+
       // Open the next panel the user wants to go to. Do this after the XHR response
       // is over so that we don't start a new XHR request while this one is finishing,
       // which confuses the loading indicator.
-      setTimeout(function() { show_panel(!switch_back_to_panel || switch_back_to_panel == "login" ? 'system_status' : switch_back_to_panel) }, 300);
+      setTimeout(function() {
+        if (window.location.hash) {
+          var panelid = window.location.hash.substring(1);
+          show_panel(panelid);
+        } else {
+          show_panel(
+            !switch_back_to_panel || switch_back_to_panel == "login"
+            ? 'welcome'
+            : switch_back_to_panel)
+        }
+      }, 300);
+
     }
   },
   undefined,
@@ -183,4 +199,19 @@ function show_login() {
     }
   });
 }
+
+function show_hide_menus() {
+  var is_logged_in = (api_credentials != null);
+  var privs = api_credentials ? api_credentials.privileges : [];
+  $('.if-logged-in').toggle(is_logged_in);
+  $('.if-logged-in-admin, .if-logged-in-not-admin').toggle(false);
+  if (is_logged_in) {
+    $('.if-logged-in-not-admin').toggle(true);
+    privs.forEach(function(priv) {
+      $('.if-logged-in-' + priv).toggle(true);
+      $('.if-logged-in-not-' + priv).toggle(false);
+    });
+  }
+  $('.if-not-logged-in').toggle(!is_logged_in);
+}
 </script>

management/templates/mail-guide.html

@@ -16,7 +16,7 @@
 
 				<h4>Automatic configuration</h4>
 
-					<p>iOS and OS X only: Open <a style="font-weight: bold" href="https://{{hostname}}/mailinabox.mobileconfig">this configuration link</a> on your iOS device or on your Mac desktop to easily set up mail (IMAP/SMTP), Contacts, and Calendar. Your username is your whole email address.</p>
+					<p>iOS and macOS only: Open <a style="font-weight: bold" href="https://{{hostname}}/mailinabox.mobileconfig">this configuration link</a> on your iOS device or on your Mac desktop to easily set up mail (IMAP/SMTP), Contacts, and Calendar. Your username is your whole email address.</p>
 	
 				<h4>Manual configuration</h4>
 
@@ -36,13 +36,13 @@
 					<tr><th>Password:</th> <td>Your mail password.</td></tr>
 					</table>
 
-					<p>In addition to setting up your email, you&rsquo;ll also need to set up <a href="#sync_guide" onclick="return show_panel(this);">contacts and calendar synchronization</a> separately.</p>
+					<p>In addition to setting up your email, you&rsquo;ll also need to set up <a href="#sync_guide">contacts and calendar synchronization</a> separately.</p>
 
 					<p>As an alternative to IMAP you can also use the POP protocol: choose POP as the protocol, port 995, and SSL or TLS security in your mail client. The SMTP settings and usernames and passwords remain the same. However, we recommend you use IMAP instead.</p>
 
 				<h4>Exchange/ActiveSync settings</h4>
 
-					<p>On iOS devices, devices on this <a href="https://wiki.z-hub.io/display/ZP/Compatibility">compatibility list</a>, or using Outlook 2007 or later on Windows 7 and later, you may set up your mail as an Exchange or ActiveSync server. However, we&rsquo;ve found this to be more buggy than using IMAP as described above. If you encounter any problems, please use the manual settings above.</p>
+					<p>On iOS devices, devices on this <a href="https://github.com/Z-Hub/Z-Push/wiki/Compatibility">compatibility list</a>, or using Outlook 2007 or later on Windows 7 and later, you may set up your mail as an Exchange or ActiveSync server. However, we&rsquo;ve found this to be more buggy than using IMAP as described above. If you encounter any problems, please use the manual settings above.</p>
 
 					<table class="table">
 					<tr><th>Server</th> <td>{{hostname}}</td></tr>

management/templates/munin.html

@@ -0,0 +1,20 @@
+<h2>Munin Monitoring</h2>
+
+<style>
+</style>
+
+<p>Opening munin in a new tab... You may need to allow pop-ups for this site.</p>
+
+<script>
+function show_munin() {
+  // Set the cookie.
+  api(
+    "/munin",
+    "GET",
+    { },
+    function(r) {
+      // Redirect.
+      window.open("/admin/munin/index.html", "_blank");
+    });
+}
+</script>

management/templates/sync-guide.html

@@ -17,22 +17,22 @@
 			<tr><th>Calendar</td> <td><a href="https://{{hostname}}/cloud/calendar">https://{{hostname}}/cloud/calendar</a></td></tr>
 			</table>
 
-			<p>Log in settings are the same as with <a href="#mail-guide" onclick="return show_panel(this);">mail</a>: your
+			<p>Log in settings are the same as with <a href="#mail-guide">mail</a>: your
 			complete email address and your mail password.</p>
 		</div>
 
 		<div class="col-sm-6">
 			<h4>On your mobile device</h4>
 
-			<p>If you set up your <a href="#mail-guide" onclick="return show_panel(this);">mail</a> using Exchange/ActiveSync,
+			<p>If you set up your <a href="#mail-guide">mail</a> using Exchange/ActiveSync,
 			your contacts and calendar may already appear on your device.</p>
 			<p>Otherwise, here are some apps that can synchronize your contacts and calendar to your Android phone.</p>
 
 			<table class="table">
 			<thead><tr><th>For...</th> <th>Use...</th></tr></thead>
-			<tr><td>Contacts and Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=at.bitfire.davdroid">DAVdroid</a> ($3.69; free <a href="https://f-droid.org/packages/at.bitfire.davdroid/">here</a>)</td></tr>
+			<tr><td>Contacts and Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=at.bitfire.davdroid">DAVx⁵</a> ($5.99; free <a href="https://f-droid.org/packages/at.bitfire.davdroid/">here</a>)</td></tr>
-			<tr><td>Only Contacts</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.carddav.sync">CardDAV-Sync free beta</a> (free)</td></tr>
+			<tr><td>Only Contacts</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.carddav.sync">CardDAV-Sync free</a> (free)</td></tr>
-			<tr><td>Only Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.caldav.lib">CalDAV-Sync</a> ($2.89)</td></tr>
+			<tr><td>Only Calendar</td> <td><a href="https://play.google.com/store/apps/details?id=org.dmfs.caldav.lib">CalDAV-Sync</a> ($2.99)</td></tr>
 			</table>
 
 			<p>Use the following settings:</p>

management/templates/system-backup.html

@@ -5,7 +5,7 @@
 
 <h2>Backup Status</h2>
 
-<p>The box makes an incremental backup each night. By default the backup is stored on the machine itself, but you can also store in on S3-compatible services like Amazon Web Services (AWS).</p>
+<p>The box makes an incremental backup each night. You can store the backup on any Amazon Web Services S3-compatible service, or other options.</p>
 
 <h3>Configuration</h3>
 
@@ -45,6 +45,10 @@
     <label for="backup-target-rsync-host" class="col-sm-2 control-label">Hostname</label>
     <div class="col-sm-8">
       <input type="text" placeholder="hostname.local" class="form-control" rows="1" id="backup-target-rsync-host">
+      <div class="small" style="margin-top: 2px">
+	The hostname at your rsync provider, e.g. <tt>da2327.rsync.net</tt>.  Optionally includes a colon
+	and the provider's non-standard ssh port number, e.g. <tt>u215843.your-storagebox.de:23</tt>. 
+      </div>
     </div>
   </div>
   <div class="form-group backup-target-rsync">
@@ -66,9 +70,12 @@
       <div class="small" style="margin-top: 2px">
         Copy the Public SSH Key above, and paste it within the <tt>~/.ssh/authorized_keys</tt>
         of target user on the backup server specified above. That way you'll enable secure and
-        passwordless authentication from your mail-in-a-box server and your backup server.
+        passwordless authentication from your Mail-in-a-Box server and your backup server.
       </div>
     </div>
+    <div id="copy_pub_key_div" class="col-sm">
+      <button type="button" class="btn btn-small" onclick="copy_pub_key_to_clipboard()">Copy</button>
+    </div> 
   </div>
   <!-- S3 BACKUP -->
   <div class="form-group backup-target-s3">
@@ -91,13 +98,19 @@
   <div class="form-group backup-target-s3">
     <label for="backup-target-s3-host" class="col-sm-2 control-label">S3 Host / Endpoint</label>
     <div class="col-sm-8">
-      <input type="text" placeholder="Endpoint" class="form-control" rows="1" id="backup-target-s3-host">
+      <input type="text" placeholder="https://s3.backuphost.com" class="form-control" rows="1" id="backup-target-s3-host">
     </div>
   </div>
   <div class="form-group backup-target-s3">
-    <label for="backup-target-s3-path" class="col-sm-2 control-label">S3 Path</label>
+    <label for="backup-target-s3-region-name" class="col-sm-2 control-label">S3 Region Name <span style="font-weight: normal">(if required)</span></label>
     <div class="col-sm-8">
-      <input type="text" placeholder="your-bucket-name/backup-directory" class="form-control" rows="1" id="backup-target-s3-path">
+      <input type="text" placeholder="region.name" class="form-control" rows="1" id="backup-target-s3-region-name">
+    </div>
+  </div>
+  <div class="form-group backup-target-s3">
+    <label for="backup-target-s3-path" class="col-sm-2 control-label">S3 Bucket &amp; Path</label>
+    <div class="col-sm-8">
+      <input type="text" placeholder="bucket-name/backup-directory" class="form-control" rows="1" id="backup-target-s3-path">
     </div>
   </div>
   <div class="form-group backup-target-s3">
@@ -138,7 +151,7 @@
       </div>
   </div>
   <!-- Common -->
-  <div class="form-group backup-target-local backup-target-rsync backup-target-s3">
+  <div class="form-group backup-target-local backup-target-rsync backup-target-s3 backup-target-b2">
     <label for="min-age" class="col-sm-2 control-label">Retention Days:</label>
     <div class="col-sm-8">
       <input type="number" class="form-control" rows="1" id="min-age">
@@ -259,18 +272,18 @@ function show_custom_backup() {
         } else if (r.target == "off") {
           $("#backup-target-type").val("off");
         } else if (r.target.substring(0, 8) == "rsync://") {
-          $("#backup-target-type").val("rsync");
+          const spec = url_split(r.target);
-          var path = r.target.substring(8).split('//');
+          $("#backup-target-type").val(spec.scheme);
-          var host_parts = path.shift().split('@');
+	  $("#backup-target-rsync-user").val(spec.user);
-          $("#backup-target-rsync-user").val(host_parts[0]);
+	  $("#backup-target-rsync-host").val(spec.host);
-          $("#backup-target-rsync-host").val(host_parts[1]);
+	  $("#backup-target-rsync-path").val(spec.path);
-          $("#backup-target-rsync-path").val('/'+path[0]);
         } else if (r.target.substring(0, 5) == "s3://") {
+          const spec = url_split(r.target);
           $("#backup-target-type").val("s3");
-          var hostpath = r.target.substring(5).split('/');
+          $("#backup-target-s3-host-select").val(spec.host);
-          var host = hostpath.shift();
+          $("#backup-target-s3-host").val(spec.host);
-          $("#backup-target-s3-host").val(host);
+          $("#backup-target-s3-region-name").val(spec.user); // stuffing the region name in the username
-          $("#backup-target-s3-path").val(hostpath.join('/'));
+          $("#backup-target-s3-path").val(spec.path);
         } else if (r.target.substring(0, 5) == "b2://") {
           $("#backup-target-type").val("b2");
           var targetPath = r.target.substring(5);
@@ -278,7 +291,7 @@ function show_custom_backup() {
           var b2_applicationkey = targetPath.split(':')[1].split('@')[0];
           var b2_bucket = targetPath.split('@')[1];
           $("#backup-target-b2-user").val(b2_application_keyid);
-          $("#backup-target-b2-pass").val(b2_applicationkey);
+          $("#backup-target-b2-pass").val(decodeURIComponent(b2_applicationkey));
           $("#backup-target-b2-bucket").val(b2_bucket);
         }
         toggle_form()
@@ -294,13 +307,16 @@ function set_custom_backup() {
   if (target_type == "local" || target_type == "off")
     target = target_type;
   else if (target_type == "s3")
-    target = "s3://" + $("#backup-target-s3-host").val() + "/" + $("#backup-target-s3-path").val();
+    target = "s3://"
+             + ($("#backup-target-s3-region-name").val() ? ($("#backup-target-s3-region-name").val() + "@") : "")
+             + $("#backup-target-s3-host").val()
+             + "/" + $("#backup-target-s3-path").val();
   else if (target_type == "rsync") {
     target = "rsync://" + $("#backup-target-rsync-user").val() + "@" + $("#backup-target-rsync-host").val()
                                                                 + "/" + $("#backup-target-rsync-path").val();
     target_user = '';
   } else if (target_type == "b2") {
-    target = 'b2://' + $('#backup-target-b2-user').val() + ':' + $('#backup-target-b2-pass').val()
+    target = 'b2://' + $('#backup-target-b2-user').val() + ':' + encodeURIComponent($('#backup-target-b2-pass').val())
         + '@' + $('#backup-target-b2-bucket').val()
     target_user = '';
     target_pass = '';
@@ -343,4 +359,42 @@ function init_inputs(target_type) {
     set_host($('#backup-target-s3-host-select').val());
   }
 }
+
+// Return a two-element array of the substring preceding and the substring following
+// the first occurrence of separator in string. Return [undefined, string] if the
+// separator does not appear in string.
+const split1_rest = (string, separator) => {
+    const index = string.indexOf(separator);
+    return (index >= 0) ? [string.substring(0, index), string.substring(index + separator.length)] : [undefined, string];
+};
+
+// Note: The manifest JS URL class does not work in some security-conscious
+// settings, e.g. Brave browser, so we roll our own that handles only what we need.
+//
+// Use greedy separator parsing to get parts of a MIAB backup target url.
+// Note: path will not include a leading forward slash '/'
+const url_split = url => {
+    const [ scheme, scheme_rest ] = split1_rest(url, '://');
+    const [ user, user_rest ] = split1_rest(scheme_rest, '@');
+    const [ host, path ] = split1_rest(user_rest, '/');
+
+    return {
+	scheme,
+	user,
+	host,
+	path,
+    }
+};
+  
+// Hide Copy button if not in a modern clipboard-supporting environment.
+// Using document API because jQuery is not necessarily available in this script scope.
+if (!(navigator && navigator.clipboard && navigator.clipboard.writeText)) {
+    document.getElementById('copy_pub_key_div').hidden = true;
+}
+
+function copy_pub_key_to_clipboard() {
+    const ssh_pub_key = $("#ssh-pub-key").val();
+    navigator.clipboard.writeText(ssh_pub_key);
+}  
+
 </script>

management/templates/system-status.html

@@ -10,13 +10,13 @@
   border-top: none;
   padding-top: 0;
 }
-#system-checks .status-error td {
+#system-checks .status-error td, .summary-error {
   color: #733;
 }
-#system-checks .status-warning td {
+#system-checks .status-warning td, .summary-warning {
   color: #770;
 }
-#system-checks .status-ok td {
+#system-checks .status-ok td, .summary-ok {
   color: #040;
 }
 #system-checks div.extra {
@@ -52,6 +52,9 @@
 	</div> <!-- /col -->
 	<div class="col-md-pull-3 col-md-8">
 
+          <div id="system-checks-summary">
+          </div>
+
 <table id="system-checks" class="table" style="max-width: 60em">
   <thead>
   </thead>
@@ -64,6 +67,9 @@
 
 <script>
 function show_system_status() {
+  const summary = $('#system-checks-summary');
+  summary.html("");
+
   $('#system-checks tbody').html("<tr><td colspan='2' class='text-muted'>Loading...</td></tr>")
 
   api(
@@ -93,6 +99,12 @@ function show_system_status() {
     { },
     function(r) {
       $('#system-checks tbody').html("");
+      const ok_symbol = "✓";
+      const error_symbol = "✖";
+      const warning_symbol = "?";
+
+      let count_by_status = { ok: 0, error: 0, warning: 0 };
+
       for (var i = 0; i < r.length; i++) {
         var n = $("<tr><td class='status'/><td class='message'><p style='margin: 0'/><div class='extra'/><a class='showhide' href='#'/></tr>");
         if (i == 0) n.addClass('first')
@@ -100,9 +112,12 @@ function show_system_status() {
                 n.addClass(r[i].type)
         else
                 n.addClass("status-" + r[i].type)
-        if (r[i].type == "ok") n.find('td.status').text("✓")
+
-        if (r[i].type == "error") n.find('td.status').text("✖")
+        if (r[i].type == "ok") n.find('td.status').text(ok_symbol);
-        if (r[i].type == "warning") n.find('td.status').text("?")
+        if (r[i].type == "error") n.find('td.status').text(error_symbol);
+        if (r[i].type == "warning") n.find('td.status').text(warning_symbol);
+        count_by_status[r[i].type]++;
+
         n.find('td.message p').text(r[i].text)
         $('#system-checks tbody').append(n);
 
@@ -122,8 +137,17 @@ function show_system_status() {
           n.find('> td.message > div').append(m);
         }
       }
-    })
 
+      // Summary counts
+      summary.html("Summary: ");
+      if (count_by_status['error'] + count_by_status['warning'] == 0) {
+        summary.append($('<span class="summary-ok"/>').text(`All ${count_by_status['ok']} ${ok_symbol} OK`));
+      } else {
+        summary.append($('<span class="summary-ok"/>').text(`${count_by_status['ok']} ${ok_symbol} OK, `));
+        summary.append($('<span class="summary-error"/>').text(`${count_by_status['error']} ${error_symbol} Error, `));
+        summary.append($('<span class="summary-warning"/>').text(`${count_by_status['warning']} ${warning_symbol} Warning`));
+      }
+    })
 }
 
 var current_privacy_setting = null;

management/templates/users.html

@@ -6,6 +6,7 @@
 #user_table .account_inactive .if_active { display: none; }
 #user_table .account_active .if_inactive { display: none; }
 #user_table .account_active.if_inactive { display: none; }
+.row-center { text-align: center; }
 </style>
 
 <h3>Add a mail user</h3>
@@ -27,20 +28,28 @@
       <option value="admin">Administrator</option>
     </select>
   </div>
+  <div class="form-group">
+      <label class="sr-only" for="adduserQuota">Quota</label>
+      <input type="text" class="form-control" id="adduserQuota" placeholder="Quota" style="width:5em;" value="0">
+  </div>
   <button type="submit" class="btn btn-primary">Add User</button>
 </form>
 <ul style="margin-top: 1em; padding-left: 1.5em; font-size: 90%;">
   <li>Passwords must be at least eight characters consisting of English letters and numbers only. For best results, <a href="#" onclick="return generate_random_password()">generate a random password</a>.</li>
-  <li>Use <a href="#" onclick="return show_panel('aliases')">aliases</a> to create email addresses that forward to existing accounts.</li>
+  <li>Use <a href="#aliases">aliases</a> to create email addresses that forward to existing accounts.</li>
   <li>Administrators get access to this control panel.</li>
-  <li>User accounts cannot contain any international (non-ASCII) characters, but <a href="#" onclick="return show_panel('aliases');">aliases</a> can.</li>
+  <li>User accounts cannot contain any international (non-ASCII) characters, but <a href="#aliases">aliases</a> can.</li>
+  <li>Quotas may not contain any spaces, commas or decimal points. Suffixes of G (gigabytes) and M (megabytes) are allowed.  For unlimited storage enter 0 (zero)</li>
 </ul>
 
 <h3>Existing mail users</h3>
 <table id="user_table" class="table" style="width: auto">
   <thead>
     <tr>
-      <th width="50%">Email Address</th>
+      <th width="35%">Email Address</th>
+      <th class="row-center">Size</th>
+      <th class="row-center">Used</th>
+      <th class="row-center">Quota</th>
       <th>Actions</th>
     </tr>
   </thead>
@@ -53,10 +62,21 @@
   <tr id="user-template">
     <td class='address'>
     </td>
+    <td class="box-size row-center"></td>
+    <td class="percent row-center"></td>
+	<td class="quota row-center">
+	</td>
     <td class='actions'>
         <span class='privs'>
         </span>
 
+        <span class="if_active">
+          <a href="#" onclick="users_set_quota(this); return false;" class='setquota' title="Set Quota">
+              set quota
+          </a>
+          |
+        </span>
+
         <span class="if_active">
           <a href="#" onclick="users_set_password(this); return false;" class='setpw' title="Set Password">
             set password
@@ -97,10 +117,28 @@
 <table class="table" style="margin-top: .5em">
 <thead><th>Verb</th> <th>Action</th><th></th></thead>
 <tr><td>GET</td><td><i>(none)</i></td> <td>Returns a list of existing mail users. Adding <code>?format=json</code> to the URL will give JSON-encoded results.</td></tr>
-<tr><td>POST</td><td>/add</td> <td>Adds a new mail user. Required POST-body parameters are <code>email</code> and <code>password</code>.</td></tr>
+<tr>
-<tr><td>POST</td><td>/remove</td> <td>Removes a mail user. Required POST-body parameter is <code>email</code>.</td></tr>
+    <td>POST</td>
+    <td>/add</td>
+    <td>Adds a new mail user. Required POST-body parameters are <code>email</code> and <code>password</code>. Optional parameters: <code>privilege=admin</code> and <code>quota</code></td>
+</tr>
+<tr>
+    <td>POST</td>
+    <td>/remove</td>
+    <td>Removes a mail user. Required POST-by parameter is <code>email</code>.</td>
+</tr>
 <tr><td>POST</td><td>/privileges/add</td> <td>Used to make a mail user an admin. Required POST-body parameters are <code>email</code> and <code>privilege=admin</code>.</td></tr>
 <tr><td>POST</td><td>/privileges/remove</td> <td>Used to remove the admin privilege from a mail user. Required POST-body parameter is <code>email</code>.</td></tr>
+<tr>
+    <td>GET</td>
+    <td>/quota</td>
+    <td>Get the quota for a mail user. Required POST-body parameters are <code>email</code> and will return JSON result</td>
+</tr>
+<tr>
+    <td>POST</td>
+    <td>/quota</td>
+    <td>Set the quota for a mail user. Required POST-body parameters are <code>email</code> and <code>quota</code>.</td>
+</tr>
 </table>
 
 <h4>Examples:</h4>
@@ -133,7 +171,7 @@ function show_users() {
     function(r) {
       $('#user_table tbody').html("");
       for (var i = 0; i < r.length; i++) {
-        var hdr = $("<tr><th colspan='2' style='background-color: #EEE'></th></tr>");
+        var hdr = $("<tr><th colspan='6' style='background-color: #EEE'></th></tr>");
         hdr.find('th').text(r[i].domain);
         $('#user_table tbody').append(hdr);
 
@@ -151,7 +189,14 @@ function show_users() {
           n2.addClass("account_" + user.status);
 
           n.attr('data-email', user.email);
-          n.find('.address').text(user.email)
+          n.attr('data-quota', user.quota);
+          n.find('.address').text(user.email);
+          n.find('.box-size').text(user.box_size);
+          if (user.box_size == '?') {
+            n.find('.box-size').attr('title', 'Mailbox size is unkown')
+          }
+          n.find('.percent').text(user.percent);
+          n.find('.quota').text((user.quota == '0') ? 'unlimited' : user.quota);
           n2.find('.restore_info tt').text(user.mailbox);
 
           if (user.status == 'inactive') continue;
@@ -180,13 +225,15 @@ function do_add_user() {
   var email = $("#adduserEmail").val();
   var pw = $("#adduserPassword").val();
   var privs = $("#adduserPrivs").val();
+  var quota = $("#adduserQuota").val();
   api(
     "/mail/users/add",
     "POST",
     {
       email: email,
       password: pw,
-      privileges: privs
+      privileges: privs,
+      quota: quota
     },
     function(r) {
       // Responses are multiple lines of pre-formatted text.
@@ -203,7 +250,7 @@ function users_set_password(elem) {
   var email = $(elem).parents('tr').attr('data-email');
 
   var yourpw = "";
-  if (api_credentials != null && email == api_credentials[0])
+  if (api_credentials != null && email == api_credentials.username)
     yourpw = "<p class='text-danger'>If you change your own password, you will be logged out of this control panel and will need to log in again.</p>";
 
   show_modal_confirm(
@@ -228,11 +275,41 @@ function users_set_password(elem) {
     });
 }
 
+function users_set_quota(elem) {
+    var email = $(elem).parents('tr').attr('data-email');
+    var quota = $(elem).parents('tr').attr('data-quota');
+
+    show_modal_confirm(
+        "Set Quota",
+        $("<p>Set quota for <b>" + email + "</b>?</p>" +
+            "<p>" +
+            "<label for='users_set_quota' style='display: block; font-weight: normal'>Quota:</label>" +
+            "<input type='text' id='users_set_quota' value='" + quota + "'></p>" +
+            "<p><small>Quotas may not contain any spaces or commas.  Suffixes of G (gigabytes) and M (megabytes) are allowed.</small></p>" +
+            "<p><small>For unlimited storage enter 0 (zero)</small></p>"),
+        "Set Quota",
+        function() {
+            api(
+                "/mail/users/quota",
+                "POST",
+                {
+                    email: email,
+                    quota: $('#users_set_quota').val()
+                },
+                function(r) {
+                    show_users();
+                },
+                function(r) {
+                    show_modal_error("Set Quota", r);
+                });
+        });
+}
+
 function users_remove(elem) {
   var email = $(elem).parents('tr').attr('data-email');
 
   // can't remove yourself
-  if (api_credentials != null && email == api_credentials[0]) {
+  if (api_credentials != null && email == api_credentials.username) {
     show_modal_error("Archive User", "You cannot archive your own account.");
     return;
   }
@@ -264,7 +341,7 @@ function mod_priv(elem, add_remove) {
   var priv = $(elem).parents('td').find('.name').text();
 
   // can't remove your own admin access
-  if (priv == "admin" && add_remove == "remove" && api_credentials != null && email == api_credentials[0]) {
+  if (priv == "admin" && add_remove == "remove" && api_credentials != null && email == api_credentials.username) {
     show_modal_error("Modify Privileges", "You cannot remove the admin privilege from yourself.");
     return;
   }
@@ -293,7 +370,7 @@ function generate_random_password() {
   var charset = "ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz23456789"; // confusable characters skipped
   for (var i = 0; i < 12; i++)
     pw += charset.charAt(Math.floor(Math.random() * charset.length));
-  show_modal_error("Random Password", "<p>Here, try this:</p> <p><code style='font-size: 110%'>" + pw + "</code></pr");
+  show_modal_error("Random Password", "<p>Here, try this:</p> <p><code style='font-size: 110%'>" + pw + "</code></p>");
   return false; // cancel click
 }
 </script>

management/templates/web.html

@@ -10,7 +10,7 @@
 <p>You can replace the default website with your own HTML pages and other static files. This control panel won&rsquo;t help you design a website, but once you have <tt>.html</tt> files you can upload them following these instructions:</p>
 
 <ol>
-<li>Ensure that any domains you are publishing a website for have no problems on the <a href="#system_status" onclick="return show_panel(this);">Status Checks</a> page.</li>
+<li>Ensure that any domains you are publishing a website for have no problems on the <a href="#system_status">Status Checks</a> page.</li>
 
 <li>On your personal computer, install an SSH file transfer program such as <a href="https://filezilla-project.org/">FileZilla</a> or <a href="http://linuxcommand.org/man_pages/scp1.html">scp</a>.</li>
 
@@ -32,7 +32,7 @@
         </tbody>
 </table>
 
-<p>To add a domain to this table, create a dummy <a href="#users" onclick="return show_panel(this);">mail user</a> or <a href="#aliases" onclick="return show_panel(this);">alias</a> on the domain first and see the <a href="https://mailinabox.email/guide.html#domain-name-configuration">setup guide</a> for adding nameserver records to the new domain at your registrar (but <i>not</i> glue records).</p>
+<p>To add a domain to this table, create a dummy <a href="#users">mail user</a> or <a href="#aliases">alias</a> on the domain first and see the <a href="https://mailinabox.email/guide.html#domain-name-configuration">setup guide</a> for adding nameserver records to the new domain at your registrar (but <i>not</i> glue records).</p>
 
 </ol>
 

management/templates/welcome.html

@@ -0,0 +1,16 @@
+<style>
+  .title {
+    margin: 1em;
+    text-align: center;
+  }
+
+  .subtitle {
+    margin: 2em;
+    text-align: center;
+  }
+</style>
+
+<h1 class="title">{{hostname}}</h1>
+
+<p class="subtitle">Welcome to your Mail-in-a-Box control panel.</p>
+

management/utils.py

@@ -14,28 +14,30 @@ def load_env_vars_from_file(fn):
     # Load settings from a KEY=VALUE file.
     import collections
     env = collections.OrderedDict()
-    for line in open(fn): env.setdefault(*line.strip().split("=", 1))
+    with open(fn, encoding="utf-8")  as f:
+        for line in f:
+            env.setdefault(*line.strip().split("=", 1))
     return env
 
 def save_environment(env):
-    with open("/etc/mailinabox.conf", "w") as f:
+    with open("/etc/mailinabox.conf", "w", encoding="utf-8") as f:
-        for k, v in env.items():
+        f.writelines(f"{k}={v}\n" for k, v in env.items())
-            f.write("%s=%s\n" % (k, v))
 
 # THE SETTINGS FILE AT STORAGE_ROOT/settings.yaml.
 
 def write_settings(config, env):
     import rtyaml
     fn = os.path.join(env['STORAGE_ROOT'], 'settings.yaml')
-    with open(fn, "w") as f:
+    with open(fn, "w", encoding="utf-8") as f:
         f.write(rtyaml.dump(config))
 
 def load_settings(env):
     import rtyaml
     fn = os.path.join(env['STORAGE_ROOT'], 'settings.yaml')
     try:
-        config = rtyaml.load(open(fn, "r"))
+        with open(fn, encoding="utf-8") as f:
-        if not isinstance(config, dict): raise ValueError() # caught below
+            config = rtyaml.load(f)
+        if not isinstance(config, dict): raise ValueError # caught below
         return config
     except:
         return { }
@@ -56,7 +58,7 @@ def sort_domains(domain_names, env):
     # from shortest to longest since zones are always shorter than their
     # subdomains.
     zones = { }
-    for domain in sorted(domain_names, key=lambda d : len(d)):
+    for domain in sorted(domain_names, key=len):
         for z in zones.values():
             if domain.endswith("." + z):
                 # We found a parent domain already in the list.
@@ -78,7 +80,7 @@ def sort_domains(domain_names, env):
       ))
 
     # Now sort the domain names that fall within each zone.
-    domain_names = sorted(domain_names,
+    return sorted(domain_names,
       key = lambda d : (
         # First by zone.
         zone_domains.index(zones[d]),
@@ -92,25 +94,26 @@ def sort_domains(domain_names, env):
         # Then in right-to-left lexicographic order of the .-separated parts of the name.
         list(reversed(d.split("."))),
       ))
-    
+
-    return domain_names
 
 def sort_email_addresses(email_addresses, env):
     email_addresses = set(email_addresses)
-    domains = set(email.split("@", 1)[1] for email in email_addresses if "@" in email)
+    domains = {email.split("@", 1)[1] for email in email_addresses if "@" in email}
     ret = []
     for domain in sort_domains(domains, env):
-        domain_emails = set(email for email in email_addresses if email.endswith("@" + domain))
+        domain_emails = {email for email in email_addresses if email.endswith("@" + domain)}
         ret.extend(sorted(domain_emails))
         email_addresses -= domain_emails
     ret.extend(sorted(email_addresses)) # whatever is left
     return ret
 
-def shell(method, cmd_args, env={}, capture_stderr=False, return_bytes=False, trap=False, input=None):
+def shell(method, cmd_args, env=None, capture_stderr=False, return_bytes=False, trap=False, input=None):
     # A safe way to execute processes.
     # Some processes like apt-get require being given a sane PATH.
     import subprocess
 
+    if env is None:
+        env = {}
     env.update({ "PATH": "/sbin:/bin:/usr/sbin:/usr/bin" })
     kwargs = {
         'env': env,
@@ -119,20 +122,22 @@ def shell(method, cmd_args, env={}, capture_stderr=False, return_bytes=False, tr
     if method == "check_output" and input is not None:
         kwargs['input'] = input
 
-    if not trap:
+    try:
         ret = getattr(subprocess, method)(cmd_args, **kwargs)
-    else:
+        code = 0
-        try:
+    except subprocess.CalledProcessError as e:
-            ret = getattr(subprocess, method)(cmd_args, **kwargs)
+        if not trap:
-            code = 0
+            if False:
-        except subprocess.CalledProcessError as e:
+                import sys, shlex
-            ret = e.output
+                print(shlex.join(cmd_args), file=sys.stderr)
-            code = e.returncode
+                raise
+            raise
+        ret = e.output
+        code = e.returncode
     if not return_bytes and isinstance(ret, bytes): ret = ret.decode("utf8")
     if not trap:
         return ret
-    else:
+    return code, ret
-        return code, ret
 
 def create_syslog_handler():
     import logging.handlers
@@ -146,7 +151,7 @@ def du(path):
     # soft and hard links.
     total_size = 0
     seen = set()
-    for dirpath, dirnames, filenames in os.walk(path):
+    for dirpath, _dirnames, filenames in os.walk(path):
         for f in filenames:
             fp = os.path.join(dirpath, f)
             try:
@@ -175,13 +180,34 @@ def wait_for_service(port, public, env, timeout):
 				return False
 		time.sleep(min(timeout/4, 1))
 
-def fix_boto():
+def get_ssh_port():
-	# Google Compute Engine instances install some Python-2-only boto plugins that
+	port_value = get_ssh_config_value("port")
-	# conflict with boto running under Python 3. Disable boto's default configuration
-	# file prior to importing boto so that GCE's plugin is not loaded:
-	import os
-	os.environ["BOTO_CONFIG"] = "/etc/boto3.cfg"
 
+	if port_value:
+		return int(port_value)
+
+	return None
+
+def get_ssh_config_value(parameter_name):
+	# Returns ssh configuration value for the provided parameter
+	import subprocess
+	try:
+		output = shell('check_output', ['sshd', '-T'])
+	except FileNotFoundError:
+		# sshd is not installed. That's ok.
+		return None
+	except subprocess.CalledProcessError:
+		# error while calling shell command
+		return None
+
+	for line in output.split("\n"):
+		if " " not in line: continue # there's a blank line at the end
+		key, values = line.split(" ", 1)
+		if key == parameter_name:
+			return values # space-delimited if there are multiple values
+
+	# Did not find the parameter!
+	return None
 
 if __name__ == "__main__":
 	from web_update import get_web_domains

management/web_update.py

@@ -22,17 +22,17 @@ def get_web_domains(env, include_www_redirects=True, include_auto=True, exclude_
 		# Add 'www.' subdomains that we want to provide default redirects
 		# to the main domain for. We'll add 'www.' to any DNS zones, i.e.
 		# the topmost of each domain we serve.
-		domains |= set('www.' + zone for zone, zonefile in get_dns_zones(env))
+		domains |= {'www.' + zone for zone, zonefile in get_dns_zones(env)}
 
 	if include_auto:
 		# Add Autoconfiguration domains for domains that there are user accounts at:
 		# 'autoconfig.' for Mozilla Thunderbird auto setup.
 		# 'autodiscover.' for ActiveSync autodiscovery (Z-Push).
-		domains |= set('autoconfig.' + maildomain for maildomain in get_mail_domains(env, users_only=True))
+		domains |= {'autoconfig.' + maildomain for maildomain in get_mail_domains(env, users_only=True)}
-		domains |= set('autodiscover.' + maildomain for maildomain in get_mail_domains(env, users_only=True))
+		domains |= {'autodiscover.' + maildomain for maildomain in get_mail_domains(env, users_only=True)}
 
 		# 'mta-sts.' for MTA-STS support for all domains that have email addresses.
-		domains |= set('mta-sts.' + maildomain for maildomain in get_mail_domains(env))
+		domains |= {'mta-sts.' + maildomain for maildomain in get_mail_domains(env)}
 
 	if exclude_dns_elsewhere:
 		# ...Unless the domain has an A/AAAA record that maps it to a different
@@ -45,15 +45,14 @@ def get_web_domains(env, include_www_redirects=True, include_auto=True, exclude_
 	domains.add(env['PRIMARY_HOSTNAME'])
 
 	# Sort the list so the nginx conf gets written in a stable order.
-	domains = sort_domains(domains, env)
+	return sort_domains(domains, env)
 
-	return domains
 
 def get_domains_with_a_records(env):
 	domains = set()
 	dns = get_custom_dns_config(env)
 	for domain, rtype, value in dns:
-		if rtype == "CNAME" or (rtype in ("A", "AAAA") and value not in ("local", env['PUBLIC_IP'])):
+		if rtype == "CNAME" or (rtype in {"A", "AAAA"} and value not in {"local", env['PUBLIC_IP'], env['PUBLIC_IPV6']}):
 			domains.add(domain)
 	return domains
 
@@ -63,7 +62,8 @@ def get_web_domains_with_root_overrides(env):
 	root_overrides = { }
 	nginx_conf_custom_fn = os.path.join(env["STORAGE_ROOT"], "www/custom.yaml")
 	if os.path.exists(nginx_conf_custom_fn):
-		custom_settings = rtyaml.load(open(nginx_conf_custom_fn))
+		with open(nginx_conf_custom_fn, encoding='utf-8') as f:
+			custom_settings = rtyaml.load(f)
 		for domain, settings in custom_settings.items():
 			for type, value in [('redirect', settings.get('redirects', {}).get('/')),
 				('proxy', settings.get('proxies', {}).get('/'))]:
@@ -75,13 +75,18 @@ def do_web_update(env):
 	# Pre-load what SSL certificates we will use for each domain.
 	ssl_certificates = get_ssl_certificates(env)
 
+	# Helper for reading config files and templates
+	def read_conf(conf_fn):
+		with open(os.path.join(os.path.dirname(__file__), "../conf", conf_fn), encoding='utf-8') as f:
+			return f.read()
+
 	# Build an nginx configuration file.
-	nginx_conf = open(os.path.join(os.path.dirname(__file__), "../conf/nginx-top.conf")).read()
+	nginx_conf = read_conf("nginx-top.conf")
 
 	# Load the templates.
-	template0 = open(os.path.join(os.path.dirname(__file__), "../conf/nginx.conf")).read()
+	template0 = read_conf("nginx.conf")
-	template1 = open(os.path.join(os.path.dirname(__file__), "../conf/nginx-alldomains.conf")).read()
+	template1 = read_conf("nginx-alldomains.conf")
-	template2 = open(os.path.join(os.path.dirname(__file__), "../conf/nginx-primaryonly.conf")).read()
+	template2 = read_conf("nginx-primaryonly.conf")
 	template3 = "\trewrite ^(.*) https://$REDIRECT_DOMAIN$1 permanent;\n"
 
 	# Add the PRIMARY_HOST configuration first so it becomes nginx's default server.
@@ -107,12 +112,12 @@ def do_web_update(env):
 	# Did the file change? If not, don't bother writing & restarting nginx.
 	nginx_conf_fn = "/etc/nginx/conf.d/local.conf"
 	if os.path.exists(nginx_conf_fn):
-		with open(nginx_conf_fn) as f:
+		with open(nginx_conf_fn, encoding='utf-8') as f:
 			if f.read() == nginx_conf:
 				return ""
 
 	# Save the file.
-	with open(nginx_conf_fn, "w") as f:
+	with open(nginx_conf_fn, "w", encoding='utf-8') as f:
 		f.write(nginx_conf)
 
 	# Kick nginx. Since this might be called from the web admin
@@ -141,19 +146,17 @@ def make_domain_config(domain, templates, ssl_certificates, env):
 	def hashfile(filepath):
 		import hashlib
 		sha1 = hashlib.sha1()
-		f = open(filepath, 'rb')
+		with open(filepath, 'rb') as f:
-		try:
 			sha1.update(f.read())
-		finally:
-			f.close()
 		return sha1.hexdigest()
-	nginx_conf_extra += "\t# ssl files sha1: %s / %s\n" % (hashfile(tls_cert["private-key"]), hashfile(tls_cert["certificate"]))
+	nginx_conf_extra += "\t# ssl files sha1: {} / {}\n".format(hashfile(tls_cert["private-key"]), hashfile(tls_cert["certificate"]))
 
 	# Add in any user customizations in YAML format.
 	hsts = "yes"
 	nginx_conf_custom_fn = os.path.join(env["STORAGE_ROOT"], "www/custom.yaml")
 	if os.path.exists(nginx_conf_custom_fn):
-		yaml = rtyaml.load(open(nginx_conf_custom_fn))
+		with open(nginx_conf_custom_fn, encoding='utf-8') as f:
+			yaml = rtyaml.load(f)
 		if domain in yaml:
 			yaml = yaml[domain]
 
@@ -163,7 +166,8 @@ def make_domain_config(domain, templates, ssl_certificates, env):
 				pass_http_host_header = False
 				proxy_redirect_off = False
 				frame_options_header_sameorigin = False
-				m = re.search("#(.*)$", url)
+				web_sockets = False
+				m = re.search(r"#(.*)$", url)
 				if m:
 					for flag in m.group(1).split(","):
 						if flag == "pass-http-host":
@@ -172,47 +176,53 @@ def make_domain_config(domain, templates, ssl_certificates, env):
 							proxy_redirect_off = True
 						elif flag == "frame-options-sameorigin":
 							frame_options_header_sameorigin = True
-					url = re.sub("#(.*)$", "", url)
+						elif flag == "web-sockets":
+							web_sockets = True
+					url = re.sub(r"#(.*)$", "", url)
 
-				nginx_conf_extra += "\tlocation %s {" % path
+				nginx_conf_extra += f"\tlocation {path} {{"
-				nginx_conf_extra += "\n\t\tproxy_pass %s;" % url
+				nginx_conf_extra += f"\n\t\tproxy_pass {url};"
 				if proxy_redirect_off:
 					nginx_conf_extra += "\n\t\tproxy_redirect off;"
 				if pass_http_host_header:
 					nginx_conf_extra += "\n\t\tproxy_set_header Host $http_host;"
 				if frame_options_header_sameorigin:
 					nginx_conf_extra += "\n\t\tproxy_set_header X-Frame-Options SAMEORIGIN;"
+				if web_sockets:
+					nginx_conf_extra += "\n\t\tproxy_http_version 1.1;"
+					nginx_conf_extra += "\n\t\tproxy_set_header Upgrade $http_upgrade;"
+					nginx_conf_extra += "\n\t\tproxy_set_header Connection 'Upgrade';"
 				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;"
 				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-Host $http_host;"
 				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-Proto $scheme;"
 				nginx_conf_extra += "\n\t\tproxy_set_header X-Real-IP $remote_addr;"
 				nginx_conf_extra += "\n\t}\n"
 			for path, alias in yaml.get("aliases", {}).items():
-				nginx_conf_extra += "\tlocation %s {" % path
+				nginx_conf_extra += f"\tlocation {path} {{"
-				nginx_conf_extra += "\n\t\talias %s;" % alias
+				nginx_conf_extra += f"\n\t\talias {alias};"
 				nginx_conf_extra += "\n\t}\n"
 			for path, url in yaml.get("redirects", {}).items():
-				nginx_conf_extra += "\trewrite %s %s permanent;\n" % (path, url)
+				nginx_conf_extra += f"\trewrite {path} {url} permanent;\n"
 
 			# override the HSTS directive type
 			hsts = yaml.get("hsts", hsts)
 
 	# Add the HSTS header.
 	if hsts == "yes":
-		nginx_conf_extra += "\tadd_header Strict-Transport-Security \"max-age=15768000\" always;\n"
+		nginx_conf_extra += '\tadd_header Strict-Transport-Security "max-age=15768000" always;\n'
 	elif hsts == "preload":
-		nginx_conf_extra += "\tadd_header Strict-Transport-Security \"max-age=15768000; includeSubDomains; preload\" always;\n"
+		nginx_conf_extra += '\tadd_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload" always;\n'
 
 	# Add in any user customizations in the includes/ folder.
 	nginx_conf_custom_include = os.path.join(env["STORAGE_ROOT"], "www", safe_domain_name(domain) + ".conf")
 	if os.path.exists(nginx_conf_custom_include):
-		nginx_conf_extra += "\tinclude %s;\n" % (nginx_conf_custom_include)
+		nginx_conf_extra += f"\tinclude {nginx_conf_custom_include};\n"
 	# PUT IT ALL TOGETHER
 
 	# Combine the pieces. Iteratively place each template into the "# ADDITIONAL DIRECTIVES HERE" placeholder
 	# of the previous template.
 	nginx_conf = "# ADDITIONAL DIRECTIVES HERE\n"
-	for t in templates + [nginx_conf_extra]:
+	for t in [*templates, nginx_conf_extra]:
 		nginx_conf = re.sub("[ \t]*# ADDITIONAL DIRECTIVES HERE *\n", t, nginx_conf)
 
 	# Replace substitution strings in the template & return.
@@ -221,9 +231,8 @@ def make_domain_config(domain, templates, ssl_certificates, env):
 	nginx_conf = nginx_conf.replace("$ROOT", root)
 	nginx_conf = nginx_conf.replace("$SSL_KEY", tls_cert["private-key"])
 	nginx_conf = nginx_conf.replace("$SSL_CERTIFICATE", tls_cert["certificate"])
-	nginx_conf = nginx_conf.replace("$REDIRECT_DOMAIN", re.sub(r"^www\.", "", domain)) # for default www redirects to parent domain
+	return nginx_conf.replace("$REDIRECT_DOMAIN", re.sub(r"^www\.", "", domain)) # for default www redirects to parent domain
 
-	return nginx_conf
 
 def get_web_root(domain, env, test_exists=True):
 	# Try STORAGE_ROOT/web/domain_name if it exists, but fall back to STORAGE_ROOT/web/default.
@@ -247,10 +256,9 @@ def get_web_domains_info(env):
 		cert_status, cert_status_details = check_certificate(domain, tls_cert["certificate"], tls_cert["private-key"])
 		if cert_status == "OK":
 			return ("success", "Signed & valid. " + cert_status_details)
-		elif cert_status == "SELF-SIGNED":
+		if cert_status == "SELF-SIGNED":
 			return ("warning", "Self-signed. Get a signed certificate to stop warnings.")
-		else:
+		return ("danger", "Certificate has a problem: " + cert_status)
-			return ("danger", "Certificate has a problem: " + cert_status)
 
 	return [
 		{

management/wsgi.py

@@ -0,0 +1,7 @@
+from daemon import app
+import utils
+
+app.logger.addHandler(utils.create_syslog_handler())
+
+if __name__ == "__main__":
+    app.run(port=10222)

pyproject.toml

@@ -0,0 +1,69 @@
+[tool.ruff]
+line-length = 320 # https://github.com/astral-sh/ruff/issues/8106
+indent-width = 4
+
+target-version = "py310"
+
+preview = true
+
+output-format = "concise"
+
+extend-exclude = ["tools/mail.py"]
+
+[tool.ruff.lint]
+select = [
+	"F",
+	"E4",
+	"E7",
+	"E9",
+	"W",
+	"UP",
+	"YTT",
+	"S",
+	"BLE",
+	"B",
+	"A",
+	"C4",
+	"T10",
+	"DJ",
+	"EM",
+	"EXE",
+	"ISC",
+	"ICN",
+	"G",
+	"PIE",
+	"PYI",
+	"Q003",
+	"Q004",
+	"RSE",
+	"RET",
+	"SLF",
+	"SLOT",
+	"SIM",
+	"TID",
+	"TC",
+	"ARG",
+	"PGH",
+	"PL",
+	"TRY",
+	"FLY",
+	"PERF",
+	"FURB",
+	"LOG",
+	"RUF"
+]
+ignore = [
+	"W191",
+	"PLR09",
+	"PLR1702",
+	"PLR2004",
+	"RUF001",
+	"RUF002",
+	"RUF003",
+	"RUF023"
+]
+
+[tool.ruff.format]
+quote-style = "preserve"
+
+indent-style = "tab"

security.md

@@ -1,9 +1,14 @@
 Mail-in-a-Box Security Guide
 ============================
 
-Mail-in-a-Box turns a fresh Ubuntu 18.04 LTS 64-bit machine into a mail server appliance by installing and configuring various components.
+Mail-in-a-Box turns a fresh Ubuntu 22.04 LTS 64-bit machine into a mail server appliance by installing and configuring various components.
 
-This page documents the security features of Mail-in-a-Box. The term “box” is used below to mean a configured Mail-in-a-Box.
+This page documents the security posture of Mail-in-a-Box. The term “box” is used below to mean a configured Mail-in-a-Box.
+
+Reporting Security Vulnerabilities
+----------------------------------
+
+Security vulnerabilities should be reported to the [project's maintainer](https://joshdata.me) via email.
 
 Threat Model
 ------------
@@ -49,9 +54,7 @@ Additionally:
 
 ### Password Storage
 
-The passwords for mail users are stored on disk using the [SHA512-CRYPT](http://man7.org/linux/man-pages/man3/crypt.3.html) hashing scheme. ([source](management/mailconfig.py))
+The passwords for mail users are stored on disk using the [SHA512-CRYPT](http://man7.org/linux/man-pages/man3/crypt.3.html) hashing scheme. ([source](management/mailconfig.py)) Password changes (as well as changes to control panel two-factor authentication settings) expire any control panel login sessions.
-
-When using the web-based administrative control panel, after logging in an API key is placed in the browser's local storage (rather than, say, the user's actual password). The API key is an HMAC based on the user's email address and current password, and it is keyed by a secret known only to the control panel service. By resetting an administrator's password, any HMACs previously generated for that user will expire.
 
 ### Console access
 
@@ -65,12 +68,10 @@ If DNSSEC is enabled at the box's domain name's registrar, the SSHFP record that
 
 `fail2ban` provides some protection from brute-force login attacks (repeated logins that guess account passwords) by blocking offending IP addresses at the network level.
 
-The following services are protected: SSH, IMAP (dovecot), SMTP submission (postfix), webmail (roundcube), Nextcloud/CalDAV/CardDAV (over HTTP), and the Mail-in-a-Box control panel & munin (over HTTP).
+The following services are protected: SSH, IMAP (dovecot), SMTP submission (postfix), webmail (roundcube), Nextcloud/CalDAV/CardDAV (over HTTP), and the Mail-in-a-Box control panel (over HTTP).
 
 Some other services running on the box may be missing fail2ban filters.
 
-`fail2ban` only blocks IPv4 addresses, however. If the box has a public IPv6 address, it is not protected from these attacks.
-
 Outbound Mail
 -------------
 

setup/bootstrap.sh

@@ -9,32 +9,37 @@
 if [ -z "$TAG" ]; then
 	# If a version to install isn't explicitly given as an environment
 	# variable, then install the latest version. But the latest version
-	# depends on the operating system. Existing Ubuntu 14.04 users need
+	# depends on the machine's version of Ubuntu. Existing users need to
-	# to be able to upgrade to the latest version supporting Ubuntu 14.04,
+	# be able to upgrade to the latest version available for that version
-	# in part because an upgrade is required before jumping to Ubuntu 18.04.
+	# of Ubuntu to satisfy the migration requirements.
-	# New users on Ubuntu 18.04 need to get the latest version number too.
 	#
 	# Also, the system status checks read this script for TAG = (without the
 	# space, but if we put it in a comment it would confuse the status checks!)
 	# to get the latest version, so the first such line must be the one that we
 	# want to display in status checks.
-	if [ "$(lsb_release -d | sed 's/.*:\s*//' | sed 's/18\.04\.[0-9]/18.04/' )" == "Ubuntu 18.04 LTS" ]; then
+	#
-		# This machine is running Ubuntu 18.04.
+	# Allow point-release versions of the major releases, e.g. 22.04.1 is OK.
-		TAG=v0.54
+	UBUNTU_VERSION=$( lsb_release -d | sed 's/.*:\s*//' | sed 's/\([0-9]*\.[0-9]*\)\.[0-9]/\1/' )
-
+	if [ "$UBUNTU_VERSION" == "Ubuntu 22.04 LTS" ]; then
-	elif [ "$(lsb_release -d | sed 's/.*:\s*//' | sed 's/14\.04\.[0-9]/14.04/' )" == "Ubuntu 14.04 LTS" ]; then
+		# This machine is running Ubuntu 22.04, which is supported by
-		# This machine is running Ubuntu 14.04.
+		# Mail-in-a-Box versions 60 and later.
-		echo "You are installing the last version of Mail-in-a-Box that will"
+		TAG=v72
-		echo "support Ubuntu 14.04. If this is a new installation of Mail-in-a-Box,"
+	elif [ "$UBUNTU_VERSION" == "Ubuntu 18.04 LTS" ]; then
-		echo "stop now and switch to a machine running Ubuntu 18.04. If you are"
+		# This machine is running Ubuntu 18.04, which is supported by
-		echo "upgrading an existing Mail-in-a-Box --- great. After upgrading this"
+		# Mail-in-a-Box versions 0.40 through 5x.
-		echo "box, please visit https://mailinabox.email for notes on how to upgrade"
+		echo "Support is ending for Ubuntu 18.04."
-		echo "to Ubuntu 18.04."
+		echo "Please immediately begin to migrate your data to"
-		echo ""
+		echo "a new machine running Ubuntu 22.04. See:"
+		echo "https://mailinabox.email/maintenance.html#upgrade"
+		TAG=v57a
+	elif [ "$UBUNTU_VERSION" == "Ubuntu 14.04 LTS" ]; then
+		# This machine is running Ubuntu 14.04, which is supported by
+		# Mail-in-a-Box versions 1 through v0.30.
+		echo "Ubuntu 14.04 is no longer supported."
+		echo "The last version of Mail-in-a-Box supporting Ubuntu 14.04 will be installed."
 		TAG=v0.30
-
 	else
-		echo "This script must be run on a system running Ubuntu 18.04 or Ubuntu 14.04."
+		echo "This script may be used only on a machine running Ubuntu 14.04, 18.04, or 22.04."
 		exit 1
 	fi
 fi
@@ -46,33 +51,37 @@ if [[ $EUID -ne 0 ]]; then
 fi
 
 # Clone the Mail-in-a-Box repository if it doesn't exist.
-if [ ! -d $HOME/mailinabox ]; then
+if [ ! -d "$HOME/mailinabox" ]; then
 	if [ ! -f /usr/bin/git ]; then
-		echo Installing git . . .
+		echo "Installing git . . ."
 		apt-get -q -q update
 		DEBIAN_FRONTEND=noninteractive apt-get -q -q install -y git < /dev/null
 		echo
 	fi
 
-	echo Downloading Mail-in-a-Box $TAG. . .
+	if [ "$SOURCE" == "" ]; then
+		SOURCE=https://github.com/mail-in-a-box/mailinabox
+	fi
+
+	echo "Downloading Mail-in-a-Box $TAG. . ."
 	git clone \
-		-b $TAG --depth 1 \
+		-b "$TAG" --depth 1 \
-		https://github.com/mail-in-a-box/mailinabox \
+		"$SOURCE" \
-		$HOME/mailinabox \
+		"$HOME/mailinabox" \
 		< /dev/null 2> /dev/null
 
 	echo
 fi
 
 # Change directory to it.
-cd $HOME/mailinabox
+cd "$HOME/mailinabox" || exit
 
 # Update it.
-if [ "$TAG" != $(git describe) ]; then
+if [ "$TAG" != "$(git describe --always)" ]; then
-	echo Updating Mail-in-a-Box to $TAG . . .
+	echo "Updating Mail-in-a-Box to $TAG . . ."
-	git fetch --depth 1 --force --prune origin tag $TAG
+	git fetch --depth 1 --force --prune origin tag "$TAG"
-	if ! git checkout -q $TAG; then
+	if ! git checkout -q "$TAG"; then
-		echo "Update failed. Did you modify something in $(pwd)?"
+		echo "Update failed. Did you modify something in $PWD?"
 		exit 1
 	fi
 	echo
@@ -80,4 +89,3 @@ fi
 
 # Start setup script.
 setup/start.sh
-

setup/dkim.sh

@@ -10,12 +10,12 @@ source setup/functions.sh # load our functions
 source /etc/mailinabox.conf # load global vars
 
 # Install DKIM...
-echo Installing OpenDKIM/OpenDMARC...
+echo "Installing OpenDKIM/OpenDMARC..."
 apt_install opendkim opendkim-tools opendmarc
 
 # Make sure configuration directories exist.
 mkdir -p /etc/opendkim;
-mkdir -p $STORAGE_ROOT/mail/dkim
+mkdir -p "$STORAGE_ROOT/mail/dkim"
 
 # Used in InternalHosts and ExternalIgnoreList configuration directives.
 # Not quite sure why.
@@ -53,20 +53,20 @@ fi
 # such as Google. But they and others use a 2048 bit key, so we'll
 # do the same. Keys beyond 2048 bits may exceed DNS record limits.
 if [ ! -f "$STORAGE_ROOT/mail/dkim/mail.private" ]; then
-	opendkim-genkey -b 2048 -r -s mail -D $STORAGE_ROOT/mail/dkim
+	opendkim-genkey -b 2048 -r -s mail -D "$STORAGE_ROOT/mail/dkim"
 fi
 
 # Ensure files are owned by the opendkim user and are private otherwise.
-chown -R opendkim:opendkim $STORAGE_ROOT/mail/dkim
+chown -R opendkim:opendkim "$STORAGE_ROOT/mail/dkim"
-chmod go-rwx $STORAGE_ROOT/mail/dkim
+chmod go-rwx "$STORAGE_ROOT/mail/dkim"
 
 tools/editconf.py /etc/opendmarc.conf -s \
 	"Syslog=true" \
 	"Socket=inet:8893@[127.0.0.1]" \
-	"FailureReports=true"
+	"FailureReports=false"
 
 # SPFIgnoreResults causes the filter to ignore any SPF results in the header
-# of the message. This is useful if you want the filter to perfrom SPF checks
+# of the message. This is useful if you want the filter to perform SPF checks
 # itself, or because you don't trust the arriving header. This added header is
 # used by spamassassin to evaluate the mail for spamminess.
 
@@ -82,11 +82,11 @@ tools/editconf.py /etc/opendmarc.conf -s \
 tools/editconf.py /etc/opendmarc.conf -s \
         "SPFSelfValidate=true"
 
-# Enables generation of failure reports for sending domains that publish a
+# Disables generation of failure reports for sending domains that publish a
 # "none" policy.
 
 tools/editconf.py /etc/opendmarc.conf -s \
-        "FailureReportsOnNone=true"
+        "FailureReportsOnNone=false"
 
 # AlwaysAddARHeader Adds an "Authentication-Results:" header field even to
 # unsigned messages from domains with no "signs all" policy. The reported DKIM

setup/dns.sh

@@ -10,17 +10,13 @@
 source setup/functions.sh # load our functions
 source /etc/mailinabox.conf # load global vars
 
-# Install the packages.
-#
-# * nsd: The non-recursive nameserver that publishes our DNS records.
-# * ldnsutils: Helper utilities for signing DNSSEC zones.
-# * openssh-client: Provides ssh-keyscan which we use to create SSHFP records.
-echo "Installing nsd (DNS server)..."
-apt_install nsd ldnsutils openssh-client
-
 # Prepare nsd's configuration.
-
+# We configure nsd before installation as we only want it to bind to some addresses
+# and it otherwise will have port / bind conflicts with bind9 used as the local resolver
 mkdir -p /var/run/nsd
+mkdir -p /etc/nsd
+mkdir -p /etc/nsd/zones
+touch /etc/nsd/zones.conf
 
 cat > /etc/nsd/nsd.conf << EOF;
 # Do not edit. Overwritten by Mail-in-a-Box setup.
@@ -42,6 +38,22 @@ server:
 
 EOF
 
+# Since we have bind9 listening on localhost for locally-generated
+# DNS queries that require a recursive nameserver, and the system
+# might have other network interfaces for e.g. tunnelling, we have
+# to be specific about the network interfaces that nsd binds to.
+for ip in $PRIVATE_IP $PRIVATE_IPV6; do
+	echo "  ip-address: $ip" >> /etc/nsd/nsd.conf;
+done
+
+# Create a directory for additional configuration directives, including
+# the zones.conf file written out by our management daemon.
+echo "include: /etc/nsd/nsd.conf.d/*.conf" >> /etc/nsd/nsd.conf;
+
+# Remove the old location of zones.conf that we generate. It will
+# now be stored in /etc/nsd/nsd.conf.d.
+rm -f /etc/nsd/zones.conf
+
 # Add log rotation
 cat > /etc/logrotate.d/nsd <<EOF;
 /var/log/nsd.log {
@@ -54,15 +66,13 @@ cat > /etc/logrotate.d/nsd <<EOF;
 }
 EOF
 
-# Since we have bind9 listening on localhost for locally-generated
+# Install the packages.
-# DNS queries that require a recursive nameserver, and the system
+#
-# might have other network interfaces for e.g. tunnelling, we have
+# * nsd: The non-recursive nameserver that publishes our DNS records.
-# to be specific about the network interfaces that nsd binds to.
+# * ldnsutils: Helper utilities for signing DNSSEC zones.
-for ip in $PRIVATE_IP $PRIVATE_IPV6; do
+# * openssh-client: Provides ssh-keyscan which we use to create SSHFP records.
-	echo "  ip-address: $ip" >> /etc/nsd/nsd.conf;
+echo "Installing nsd (DNS server)..."
-done
+apt_install nsd ldnsutils openssh-client
-
-echo "include: /etc/nsd/zones.conf" >> /etc/nsd/nsd.conf;
 
 # Create DNSSEC signing keys.
 
@@ -91,12 +101,12 @@ if [ ! -f "$STORAGE_ROOT/dns/dnssec/$algo.conf" ]; then
 	# we're capturing into the `KSK` variable.
 	#
 	# ldns-keygen uses /dev/random for generating random numbers by default.
-	# This is slow and unecessary if we ensure /dev/urandom is seeded properly,
+	# This is slow and unnecessary if we ensure /dev/urandom is seeded properly,
 	# so we use /dev/urandom. See system.sh for an explanation. See #596, #115.
 	# (This previously used -b 2048 but it's unclear if this setting makes sense
 	# for non-RSA keys, so it's removed. The RSA-based keys are not recommended
 	# anymore anyway.)
-	KSK=$(umask 077; cd $STORAGE_ROOT/dns/dnssec; ldns-keygen -r /dev/urandom -a $algo -k _domain_);
+	KSK=$(umask 077; cd "$STORAGE_ROOT/dns/dnssec"; ldns-keygen -r /dev/urandom -a $algo -k _domain_);
 
 	# Now create a Zone-Signing Key (ZSK) which is expected to be
 	# rotated more often than a KSK, although we have no plans to
@@ -104,7 +114,7 @@ if [ ! -f "$STORAGE_ROOT/dns/dnssec/$algo.conf" ]; then
 	# disturbing DNS availability.) Omit `-k`.
 	# (This previously used -b 1024 but it's unclear if this setting makes sense
 	# for non-RSA keys, so it's removed.)
-	ZSK=$(umask 077; cd $STORAGE_ROOT/dns/dnssec; ldns-keygen -r /dev/urandom -a $algo _domain_);
+	ZSK=$(umask 077; cd "$STORAGE_ROOT/dns/dnssec"; ldns-keygen -r /dev/urandom -a $algo _domain_);
 
 	# These generate two sets of files like:
 	#
@@ -116,7 +126,7 @@ if [ ! -f "$STORAGE_ROOT/dns/dnssec/$algo.conf" ]; then
 	# options. So we'll store the names of the files we just generated.
 	# We might have multiple keys down the road. This will identify
 	# what keys are the current keys.
-	cat > $STORAGE_ROOT/dns/dnssec/$algo.conf << EOF;
+	cat > "$STORAGE_ROOT/dns/dnssec/$algo.conf" << EOF;
 KSK=$KSK
 ZSK=$ZSK
 EOF
@@ -132,7 +142,7 @@ cat > /etc/cron.daily/mailinabox-dnssec << EOF;
 #!/bin/bash
 # Mail-in-a-Box
 # Re-sign any DNS zones with DNSSEC because the signatures expire periodically.
-$(pwd)/tools/dns_update
+$PWD/tools/dns_update
 EOF
 chmod +x /etc/cron.daily/mailinabox-dnssec
 

setup/firstuser.sh

@@ -1,6 +1,7 @@
+#!/bin/bash
 # If there aren't any mail users yet, create one.
 if [ -z "$(management/cli.py user)" ]; then
-	# The outut of "management/cli.py user" is a list of mail users. If there
+	# The output of "management/cli.py user" is a list of mail users. If there
 	# aren't any yet, it'll be empty.
 
 	# If we didn't ask for an email address at the start, do so now.
@@ -10,7 +11,7 @@ if [ -z "$(management/cli.py user)" ]; then
 			input_box "Mail Account" \
 				"Let's create your first mail account.
 				\n\nWhat email address do you want?" \
-				me@$(get_default_hostname) \
+				"me@$(get_default_hostname)" \
 				EMAIL_ADDR
 
 			if [ -z "$EMAIL_ADDR" ]; then
@@ -22,7 +23,7 @@ if [ -z "$(management/cli.py user)" ]; then
 				input_box "Mail Account" \
 					"That's not a valid email address.
 					\n\nWhat email address do you want?" \
-					$EMAIL_ADDR \
+					"$EMAIL_ADDR" \
 					EMAIL_ADDR
 				if [ -z "$EMAIL_ADDR" ]; then
 					# user hit ESC/cancel
@@ -47,11 +48,11 @@ if [ -z "$(management/cli.py user)" ]; then
 	fi
 
 	# Create the user's mail account. This will ask for a password if none was given above.
-	management/cli.py user add $EMAIL_ADDR ${EMAIL_PW:-}
+	management/cli.py user add "$EMAIL_ADDR" ${EMAIL_PW:+"$EMAIL_PW"}
 
 	# Make it an admin.
-	hide_output management/cli.py user make-admin $EMAIL_ADDR
+	hide_output management/cli.py user make-admin "$EMAIL_ADDR"
 
 	# Create an alias to which we'll direct all automatically-created administrative aliases.
-	management/cli.py alias add administrator@$PRIMARY_HOSTNAME $EMAIL_ADDR > /dev/null
+	management/cli.py alias add "administrator@$PRIMARY_HOSTNAME" "$EMAIL_ADDR" > /dev/null
 fi

setup/functions.sh

@@ -1,9 +1,12 @@
+#!/bin/bash
 # Turn on "strict mode." See http://redsymbol.net/articles/unofficial-bash-strict-mode/.
 # -e: exit if any command unexpectedly fails.
 # -u: exit if we have a variable typo.
 # -o pipefail: don't ignore errors in the non-last command in a pipeline
 set -euo pipefail
 
+PHP_VER=8.0
+
 function hide_output {
 	# This function hides the output of a command unless the command fails
 	# and returns a non-zero exit code.
@@ -14,7 +17,7 @@ function hide_output {
 	# Execute command, redirecting stderr/stdout to the temporary file. Since we
 	# check the return code ourselves, disable 'set -e' temporarily.
 	set +e
-	"$@" &> $OUTPUT
+	"$@" &> "$OUTPUT"
 	E=$?
 	set -e
 
@@ -22,15 +25,15 @@ function hide_output {
 	if [ $E != 0 ]; then
 		# Something failed.
 		echo
-		echo FAILED: "$@"
+		echo "FAILED: $*"
 		echo -----------------------------------------
-		cat $OUTPUT
+		cat "$OUTPUT"
 		echo -----------------------------------------
 		exit $E
 	fi
 
 	# Remove temporary file.
-	rm -f $OUTPUT
+	rm -f "$OUTPUT"
 }
 
 function apt_get_quiet {
@@ -60,9 +63,9 @@ function get_default_hostname {
 	# Guess the machine's hostname. It should be a fully qualified
 	# domain name suitable for DNS. None of these calls may provide
 	# the right value, but it's the best guess we can make.
-	set -- $(hostname --fqdn      2>/dev/null ||
+	set -- "$(hostname --fqdn      2>/dev/null ||
                  hostname --all-fqdns 2>/dev/null ||
-                 hostname             2>/dev/null)
+                 hostname             2>/dev/null)"
 	printf '%s\n' "$1" # return this value
 }
 
@@ -74,7 +77,7 @@ function get_publicip_from_web_service {
 	#
 	# Pass '4' or '6' as an argument to this function to specify
 	# what type of address to get (IPv4, IPv6).
-	curl -$1 --fail --silent --max-time 15 icanhazip.com 2>/dev/null || /bin/true
+	curl -"$1" --fail --silent --max-time 15 icanhazip.com 2>/dev/null || /bin/true
 }
 
 function get_default_privateip {
@@ -117,19 +120,19 @@ function get_default_privateip {
 	if [ "$1" == "6" ]; then target=2001:4860:4860::8888; fi
 
 	# Get the route information.
-	route=$(ip -$1 -o route get $target 2>/dev/null | grep -v unreachable)
+	route=$(ip -"$1" -o route get $target 2>/dev/null | grep -v unreachable)
 
 	# Parse the address out of the route information.
-	address=$(echo $route | sed "s/.* src \([^ ]*\).*/\1/")
+	address=$(echo "$route" | sed "s/.* src \([^ ]*\).*/\1/")
 
 	if [[ "$1" == "6" && $address == fe80:* ]]; then
 		# For IPv6 link-local addresses, parse the interface out
 		# of the route information and append it with a '%'.
-		interface=$(echo $route | sed "s/.* dev \([^ ]*\).*/\1/")
+		interface=$(echo "$route" | sed "s/.* dev \([^ ]*\).*/\1/")
 		address=$address%$interface
 	fi
 
-	echo $address
+	echo "$address"
 }
 
 function ufw_allow {
@@ -147,7 +150,7 @@ function ufw_limit {
 }
 
 function restart_service {
-	hide_output service $1 restart
+	hide_output service "$1" restart
 }
 
 ## Dialog Functions ##
@@ -176,7 +179,7 @@ function input_menu {
 	declare -n result_code=$4_EXITCODE
 	local IFS=^$'\n'
 	set +e
-	result=$(dialog --stdout --title "$1" --menu "$2" 0 0 0 $3)
+	result=$(dialog --stdout --title "$1" --menu "$2" 0 0 0 "$3")
 	result_code=$?
 	set -e
 }
@@ -188,17 +191,17 @@ function wget_verify {
 	HASH=$2
 	DEST=$3
 	CHECKSUM="$HASH  $DEST"
-	rm -f $DEST
+	rm -f "$DEST"
-	hide_output wget -O $DEST $URL
+	hide_output wget -O "$DEST" "$URL"
 	if ! echo "$CHECKSUM" | sha1sum --check --strict > /dev/null; then
 		echo "------------------------------------------------------------"
 		echo "Download of $URL did not match expected checksum."
 		echo "Found:"
-		sha1sum $DEST
+		sha1sum "$DEST"
 		echo
 		echo "Expected:"
 		echo "$CHECKSUM"
-		rm -f $DEST
+		rm -f "$DEST"
 		exit 1
 	fi
 }
@@ -214,9 +217,9 @@ function git_clone {
 	SUBDIR=$3
 	TARGETPATH=$4
 	TMPPATH=/tmp/git-clone-$$
-	rm -rf $TMPPATH $TARGETPATH
+	rm -rf $TMPPATH "$TARGETPATH"
-	git clone -q $REPO $TMPPATH || exit 1
+	git clone -q "$REPO" $TMPPATH || exit 1
-	(cd $TMPPATH; git checkout -q $TREEISH;) || exit 1
+	(cd $TMPPATH; git checkout -q "$TREEISH";) || exit 1
-	mv $TMPPATH/$SUBDIR $TARGETPATH
+	mv $TMPPATH/"$SUBDIR" "$TARGETPATH"
 	rm -rf $TMPPATH
 }

setup/mail-dovecot.sh

@@ -45,8 +45,8 @@ apt_install \
 # - https://www.dovecot.org/list/dovecot/2012-August/137569.html
 # - https://www.dovecot.org/list/dovecot/2011-December/132455.html
 tools/editconf.py /etc/dovecot/conf.d/10-master.conf \
-	default_process_limit=$(echo "$(nproc) * 250" | bc) \
+	default_process_limit="$(($(nproc) * 250))" \
-	default_vsz_limit=$(echo "$(free -tm  | tail -1 | awk '{print $2}') / 3" | bc)M \
+	default_vsz_limit="$(($(free -tm  | tail -1 | awk '{print $2}') / 3))M" \
 	log_path=/var/log/mail.log
 
 # The inotify `max_user_instances` default is 128, which constrains
@@ -61,12 +61,38 @@ tools/editconf.py /etc/sysctl.conf \
 # username part of the user's email address. We'll ensure that no bad domains or email addresses
 # are created within the management daemon.
 tools/editconf.py /etc/dovecot/conf.d/10-mail.conf \
-	mail_location=maildir:$STORAGE_ROOT/mail/mailboxes/%d/%n \
+	mail_location="maildir:$STORAGE_ROOT/mail/mailboxes/%d/%n" \
 	mail_privileged_group=mail \
 	first_valid_uid=0
 
 # Create, subscribe, and mark as special folders: INBOX, Drafts, Sent, Trash, Spam and Archive.
 cp conf/dovecot-mailboxes.conf /etc/dovecot/conf.d/15-mailboxes.conf
+sed -i "s/#mail_plugins =\(.*\)/mail_plugins =\1 \$mail_plugins quota/" /etc/dovecot/conf.d/10-mail.conf
+if ! grep -q "mail_plugins.* imap_quota" /etc/dovecot/conf.d/20-imap.conf; then
+  sed -i "s/\(mail_plugins =.*\)/\1\n  mail_plugins = \$mail_plugins imap_quota/" /etc/dovecot/conf.d/20-imap.conf
+fi
+
+# configure stuff for quota support
+if ! grep -q "quota_status_success = DUNNO" /etc/dovecot/conf.d/90-quota.conf; then
+    cat > /etc/dovecot/conf.d/90-quota.conf << EOF;
+plugin {
+  quota = maildir
+
+  quota_grace = 10%%
+
+  quota_status_success = DUNNO
+  quota_status_nouser = DUNNO
+  quota_status_overquota = "522 5.2.2 Mailbox is full"
+}
+
+service quota-status {
+    executable = quota-status -p postfix
+    inet_listener {
+        port = 12340
+    }
+}
+EOF
+fi
 
 # ### IMAP/POP
 
@@ -84,10 +110,11 @@ tools/editconf.py /etc/dovecot/conf.d/10-ssl.conf \
 	ssl=required \
 	"ssl_cert=<$STORAGE_ROOT/ssl/ssl_certificate.pem" \
 	"ssl_key=<$STORAGE_ROOT/ssl/ssl_private_key.pem" \
-	"ssl_protocols=TLSv1.2" \
+	"ssl_min_protocol=TLSv1.2" \
 	"ssl_cipher_list=ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384" \
 	"ssl_prefer_server_ciphers=no" \
-	"ssl_dh_parameters_length=2048"
+	"ssl_dh_parameters_length=2048" \
+	"ssl_dh=<$STORAGE_ROOT/ssl/dh2048.pem"
 
 # Disable in-the-clear IMAP/POP because there is no reason for a user to transmit
 # login credentials outside of an encrypted connection. Only the over-TLS versions
@@ -151,7 +178,7 @@ EOF
 # Setting a `postmaster_address` is required or LMTP won't start. An alias
 # will be created automatically by our management daemon.
 tools/editconf.py /etc/dovecot/conf.d/15-lda.conf \
-	postmaster_address=postmaster@$PRIMARY_HOSTNAME
+	"postmaster_address=postmaster@$PRIMARY_HOSTNAME"
 
 # ### Sieve
 
@@ -200,14 +227,14 @@ chown -R mail:dovecot /etc/dovecot
 chmod -R o-rwx /etc/dovecot
 
 # Ensure mailbox files have a directory that exists and are owned by the mail user.
-mkdir -p $STORAGE_ROOT/mail/mailboxes
+mkdir -p "$STORAGE_ROOT/mail/mailboxes"
-chown -R mail.mail $STORAGE_ROOT/mail/mailboxes
+chown -R mail:mail "$STORAGE_ROOT/mail/mailboxes"
 
 # Same for the sieve scripts.
-mkdir -p $STORAGE_ROOT/mail/sieve
+mkdir -p "$STORAGE_ROOT/mail/sieve"
-mkdir -p $STORAGE_ROOT/mail/sieve/global_before
+mkdir -p "$STORAGE_ROOT/mail/sieve/global_before"
-mkdir -p $STORAGE_ROOT/mail/sieve/global_after
+mkdir -p "$STORAGE_ROOT/mail/sieve/global_after"
-chown -R mail.mail $STORAGE_ROOT/mail/sieve
+chown -R mail:mail "$STORAGE_ROOT/mail/sieve"
 
 # Allow the IMAP/POP ports in the firewall.
 ufw_allow imaps

setup/mail-postfix.sh

@@ -13,8 +13,8 @@
 # destinations according to aliases, and passses email on to
 # another service for local mail delivery.
 #
-# The first hop in local mail delivery is to Spamassassin via
+# The first hop in local mail delivery is to spampd via
-# LMTP. Spamassassin then passes mail over to Dovecot for
+# LMTP. spampd then passes mail over to Dovecot for
 # storage in the user's mailbox.
 #
 # Postfix also listens on ports 465/587 (SMTPS, SMTP+STARTLS) for
@@ -37,7 +37,7 @@ source /etc/mailinabox.conf # load global vars
 # * `postfix`: The SMTP server.
 # * `postfix-pcre`: Enables header filtering.
 # * `postgrey`: A mail policy service that soft-rejects mail the first time
-#   it is received. Spammers don't usually try agian. Legitimate mail
+#   it is received. Spammers don't usually try again. Legitimate mail
 #   always will.
 # * `ca-certificates`: A trust store used to squelch postfix warnings about
 #   untrusted opportunistically-encrypted connections.
@@ -55,9 +55,9 @@ apt_install postfix postfix-sqlite postfix-pcre postgrey ca-certificates
 # * Set the SMTP banner (which must have the hostname first, then anything).
 tools/editconf.py /etc/postfix/main.cf \
 	inet_interfaces=all \
-	smtp_bind_address=$PRIVATE_IP \
+	smtp_bind_address="$PRIVATE_IP" \
-	smtp_bind_address6=$PRIVATE_IPV6 \
+	smtp_bind_address6="$PRIVATE_IPV6" \
-	myhostname=$PRIMARY_HOSTNAME\
+	myhostname="$PRIMARY_HOSTNAME"\
 	smtpd_banner="\$myhostname ESMTP Hi, I'm a Mail-in-a-Box (Ubuntu/Postfix; see https://mailinabox.email/)" \
 	mydestination=localhost
 
@@ -69,6 +69,18 @@ tools/editconf.py /etc/postfix/main.cf \
 	maximal_queue_lifetime=2d \
 	bounce_queue_lifetime=1d
 
+# Guard against SMTP smuggling
+# This "long-term" fix is recommended at https://www.postfix.org/smtp-smuggling.html.
+# This beecame supported in a backported fix in package version 3.6.4-1ubuntu1.3. It is
+# unnecessary in Postfix 3.9+ where this is the default. The "short-term" workarounds
+# that we previously had are reverted to postfix defaults (though smtpd_discard_ehlo_keywords
+# was never included in a released version of Mail-in-a-Box).
+tools/editconf.py /etc/postfix/main.cf -e \
+       smtpd_data_restrictions= \
+       smtpd_discard_ehlo_keywords=
+tools/editconf.py /etc/postfix/main.cf \
+       smtpd_forbid_bare_newline=normalize
+
 # ### Outgoing Mail
 
 # Enable the 'submission' ports 465 and 587 and tweak their settings.
@@ -126,9 +138,9 @@ sed -i "s/PUBLIC_IP/$PUBLIC_IP/" /etc/postfix/outgoing_mail_header_filters
 tools/editconf.py /etc/postfix/main.cf \
 	smtpd_tls_security_level=may\
 	smtpd_tls_auth_only=yes \
-	smtpd_tls_cert_file=$STORAGE_ROOT/ssl/ssl_certificate.pem \
+	smtpd_tls_cert_file="$STORAGE_ROOT/ssl/ssl_certificate.pem" \
-	smtpd_tls_key_file=$STORAGE_ROOT/ssl/ssl_private_key.pem \
+	smtpd_tls_key_file="$STORAGE_ROOT/ssl/ssl_private_key.pem" \
-	smtpd_tls_dh1024_param_file=$STORAGE_ROOT/ssl/dh2048.pem \
+	smtpd_tls_dh1024_param_file="$STORAGE_ROOT/ssl/dh2048.pem" \
 	smtpd_tls_protocols="!SSLv2,!SSLv3" \
 	smtpd_tls_ciphers=medium \
 	tls_medium_cipherlist=ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA \
@@ -160,7 +172,7 @@ tools/editconf.py /etc/postfix/main.cf \
 
 # When connecting to remote SMTP servers, prefer TLS and use DANE if available.
 #
-# Prefering ("opportunistic") TLS means Postfix will use TLS if the remote end
+# Preferring ("opportunistic") TLS means Postfix will use TLS if the remote end
 # offers it, otherwise it will transmit the message in the clear. Postfix will
 # accept whatever SSL certificate the remote end provides. Opportunistic TLS
 # protects against passive easvesdropping (but not man-in-the-middle attacks).
@@ -176,7 +188,7 @@ tools/editconf.py /etc/postfix/main.cf \
 # itself but assumes the system's nameserver does and reports DNSSEC status. Thus this also
 # relies on our local DNS server (see system.sh) and `smtp_dns_support_level=dnssec`.
 #
-# The `smtp_tls_CAfile` is superflous, but it eliminates warnings in the logs about untrusted certs,
+# The `smtp_tls_CAfile` is superfluous, but it eliminates warnings in the logs about untrusted certs,
 # which we don't care about seeing because Postfix is doing opportunistic TLS anyway. Better to encrypt,
 # even if we don't know if it's to the right party, than to not encrypt at all. Instead we'll
 # now see notices about trusted certs. The CA file is provided by the package `ca-certificates`.
@@ -193,16 +205,17 @@ tools/editconf.py /etc/postfix/main.cf \
 
 # ### Incoming Mail
 
-# Pass any incoming mail over to a local delivery agent. Spamassassin
+# Pass mail to spampd, which acts as the local delivery agent (LDA),
-# will act as the LDA agent at first. It is listening on port 10025
+# which then passes the mail over to the Dovecot LMTP server after.
-# with LMTP. Spamassassin will pass the mail over to Dovecot after.
+# spampd runs on port 10025 by default.
 #
 # In a basic setup we would pass mail directly to Dovecot by setting
 # virtual_transport to `lmtp:unix:private/dovecot-lmtp`.
 tools/editconf.py /etc/postfix/main.cf "virtual_transport=lmtp:[127.0.0.1]:10025"
-# Because of a spampd bug, limit the number of recipients in each connection.
+# Clear the lmtp_destination_recipient_limit setting which in previous
+# versions of Mail-in-a-Box was set to 1 because of a spampd bug.
 # See https://github.com/mail-in-a-box/mailinabox/issues/1523.
-tools/editconf.py /etc/postfix/main.cf lmtp_destination_recipient_limit=1
+tools/editconf.py /etc/postfix/main.cf  -e lmtp_destination_recipient_limit=
 
 
 # Who can send mail to us? Some basic filters.
@@ -217,14 +230,15 @@ tools/editconf.py /etc/postfix/main.cf lmtp_destination_recipient_limit=1
 # * `reject_unlisted_recipient`: Although Postfix will reject mail to unknown recipients, it's nicer to reject such mail ahead of greylisting rather than after.
 # * `check_policy_service`: Apply greylisting using postgrey.
 #
+# Note the spamhaus rbl return codes are taken into account as advised here: https://docs.spamhaus.com/datasets/docs/source/40-real-world-usage/PublicMirrors/MTAs/020-Postfix.html
 # Notes: #NODOC
 # permit_dnswl_client can pass through mail from whitelisted IP addresses, which would be good to put before greylisting #NODOC
 # so these IPs get mail delivered quickly. But when an IP is not listed in the permit_dnswl_client list (i.e. it is not #NODOC
 # whitelisted) then postfix does a DEFER_IF_REJECT, which results in all "unknown user" sorts of messages turning into #NODOC
 # "450 4.7.1 Client host rejected: Service unavailable". This is a retry code, so the mail doesn't properly bounce. #NODOC
 tools/editconf.py /etc/postfix/main.cf \
-	smtpd_sender_restrictions="reject_non_fqdn_sender,reject_unknown_sender_domain,reject_authenticated_sender_login_mismatch,reject_rhsbl_sender dbl.spamhaus.org" \
+	smtpd_sender_restrictions="reject_non_fqdn_sender,reject_unknown_sender_domain,reject_authenticated_sender_login_mismatch,reject_rhsbl_sender dbl.spamhaus.org=127.0.1.[2..99]" \
-	smtpd_recipient_restrictions=permit_sasl_authenticated,permit_mynetworks,"reject_rbl_client zen.spamhaus.org",reject_unlisted_recipient,"check_policy_service inet:127.0.0.1:10023"
+	smtpd_recipient_restrictions="permit_sasl_authenticated,permit_mynetworks,reject_rbl_client zen.spamhaus.org=127.0.0.[2..11],reject_unlisted_recipient,check_policy_service inet:127.0.0.1:10023,check_policy_service inet:127.0.0.1:12340"
 
 # Postfix connects to Postgrey on the 127.0.0.1 interface specifically. Ensure that
 # Postgrey listens on the same interface (and not IPv6, for instance).
@@ -232,11 +246,32 @@ tools/editconf.py /etc/postfix/main.cf \
 # As a matter of fact RFC is not strict about retry timer so postfix and
 # other MTA have their own intervals. To fix the problem of receiving
 # e-mails really latter, delay of greylisting has been set to
-# 180 seconds (default is 300 seconds).
+# 180 seconds (default is 300 seconds). We will move the postgrey database
+# under $STORAGE_ROOT. This prevents a "warming up" that would have occurred
+# previously with a migrated or reinstalled OS.  We will specify this new path
+# with the --dbdir=... option. Arguments within POSTGREY_OPTS can not have spaces,
+# including dbdir. This is due to the way the init script sources the
+# /etc/default/postgrey file. --dbdir=... either needs to be a path without spaces
+# (luckily $STORAGE_ROOT does not currently work with spaces), or it needs to be a
+# symlink without spaces that can point to a folder with spaces).  We'll just assume
+# $STORAGE_ROOT won't have spaces to simplify things.
 tools/editconf.py /etc/default/postgrey \
-	POSTGREY_OPTS=\"'--inet=127.0.0.1:10023 --delay=180'\"
+	POSTGREY_OPTS=\""--inet=127.0.0.1:10023 --delay=180 --dbdir=$STORAGE_ROOT/mail/postgrey/db"\"
 
 
+# If the $STORAGE_ROOT/mail/postgrey is empty, copy the postgrey database over from the old location
+if [ ! -d "$STORAGE_ROOT/mail/postgrey/db" ]; then
+	# Stop the service
+	service postgrey stop
+	# Ensure the new paths for postgrey db exists
+	mkdir -p "$STORAGE_ROOT/mail/postgrey/db"
+	# Move over database files
+	mv /var/lib/postgrey/* "$STORAGE_ROOT/mail/postgrey/db/" || true
+fi
+# Ensure permissions are set
+chown -R postgrey:postgrey "$STORAGE_ROOT/mail/postgrey/"
+chmod 700 "$STORAGE_ROOT/mail/postgrey/"{,db}
+
 # We are going to setup a newer whitelist for postgrey, the version included in the distribution is old
 cat > /etc/cron.daily/mailinabox-postgrey-whitelist << EOF;
 #!/bin/bash

setup/mail-users.sh

@@ -5,7 +5,7 @@
 #
 # This script configures user authentication for Dovecot
 # and Postfix (which relies on Dovecot) and destination
-# validation by quering an Sqlite3 database of mail users.
+# validation by querying an Sqlite3 database of mail users.
 
 source setup/functions.sh # load our functions
 source /etc/mailinabox.conf # load global vars
@@ -18,11 +18,12 @@ source /etc/mailinabox.conf # load global vars
 db_path=$STORAGE_ROOT/mail/users.sqlite
 
 # Create an empty database if it doesn't yet exist.
-if [ ! -f $db_path ]; then
+if [ ! -f "$db_path" ]; then
-	echo Creating new user database: $db_path;
+	echo "Creating new user database: $db_path";
-	echo "CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT, email TEXT NOT NULL UNIQUE, password TEXT NOT NULL, extra, privileges TEXT NOT NULL DEFAULT '');" | sqlite3 $db_path;
+	echo "CREATE TABLE users (id INTEGER PRIMARY KEY AUTOINCREMENT, email TEXT NOT NULL UNIQUE, password TEXT NOT NULL, extra, privileges TEXT NOT NULL DEFAULT '', quota TEXT NOT NULL DEFAULT '0');" | sqlite3 "$db_path";
-	echo "CREATE TABLE aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);" | sqlite3 $db_path;
+	echo "CREATE TABLE aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);" | sqlite3 "$db_path";
-	echo "CREATE TABLE mfa (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id INTEGER NOT NULL, type TEXT NOT NULL, secret TEXT NOT NULL, mru_token TEXT, label TEXT, FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE);" | sqlite3 $db_path;
+	echo "CREATE TABLE mfa (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id INTEGER NOT NULL, type TEXT NOT NULL, secret TEXT NOT NULL, mru_token TEXT, label TEXT, FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE);" | sqlite3 "$db_path";
+	echo "CREATE TABLE auto_aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);" | sqlite3 "$db_path";
 fi
 
 # ### User Authentication
@@ -50,7 +51,7 @@ driver = sqlite
 connect = $db_path
 default_pass_scheme = SHA512-CRYPT
 password_query = SELECT email as user, password FROM users WHERE email='%u';
-user_query = SELECT email AS user, "mail" as uid, "mail" as gid, "$STORAGE_ROOT/mail/mailboxes/%d/%n" as home FROM users WHERE email='%u';
+user_query = SELECT email AS user, "mail" as uid, "mail" as gid, "$STORAGE_ROOT/mail/mailboxes/%d/%n" as home, '*:bytes=' || quota AS quota_rule FROM users WHERE email='%u';
 iterate_query = SELECT email AS user FROM users;
 EOF
 chmod 0600 /etc/dovecot/dovecot-sql.conf.ext # per Dovecot instructions
@@ -100,8 +101,12 @@ EOF
 # ### Destination Validation
 
 # Use a Sqlite3 database to check whether a destination email address exists,
-# and to perform any email alias rewrites in Postfix.
+# and to perform any email alias rewrites in Postfix. Additionally, we disable
+# SMTPUTF8 because Dovecot's LMTP server that delivers mail to inboxes does
+# not support it, and if a message is received with the SMTPUTF8 flag it will
+# bounce.
 tools/editconf.py /etc/postfix/main.cf \
+	smtputf8_enable=no \
 	virtual_mailbox_domains=sqlite:/etc/postfix/virtual-mailbox-domains.cf \
 	virtual_mailbox_maps=sqlite:/etc/postfix/virtual-mailbox-maps.cf \
 	virtual_alias_maps=sqlite:/etc/postfix/virtual-alias-maps.cf \
@@ -110,7 +115,7 @@ tools/editconf.py /etc/postfix/main.cf \
 # SQL statement to check if we handle incoming mail for a domain, either for users or aliases.
 cat > /etc/postfix/virtual-mailbox-domains.cf << EOF;
 dbpath=$db_path
-query = SELECT 1 FROM users WHERE email LIKE '%%@%s' UNION SELECT 1 FROM aliases WHERE source LIKE '%%@%s'
+query = SELECT 1 FROM users WHERE email LIKE '%%@%s' UNION SELECT 1 FROM aliases WHERE source LIKE '%%@%s' UNION SELECT 1 FROM auto_aliases WHERE source LIKE '%%@%s'
 EOF
 
 # SQL statement to check if we handle incoming mail for a user.
@@ -145,7 +150,7 @@ EOF
 # empty destination here so that other lower priority rules might match.
 cat > /etc/postfix/virtual-alias-maps.cf << EOF;
 dbpath=$db_path
-query = SELECT destination from (SELECT destination, 0 as priority FROM aliases WHERE source='%s' AND destination<>'' UNION SELECT email as destination, 1 as priority FROM users WHERE email='%s') ORDER BY priority LIMIT 1;
+query = SELECT destination from (SELECT destination, 0 as priority FROM aliases WHERE source='%s' AND destination<>'' UNION SELECT email as destination, 1 as priority FROM users WHERE email='%s' UNION SELECT destination, 2 as priority FROM auto_aliases WHERE source='%s' AND destination<>'') ORDER BY priority LIMIT 1;
 EOF
 
 # Restart Services
@@ -154,4 +159,5 @@ EOF
 restart_service postfix
 restart_service dovecot
 
-
+# force a recalculation of all user quotas
+doveadm quota recalc -A

setup/management.sh

@@ -1,23 +1,12 @@
 #!/bin/bash
 
 source setup/functions.sh
+source /etc/mailinabox.conf # load global vars
 
 echo "Installing Mail-in-a-Box system management daemon..."
 
 # DEPENDENCIES
 
-# We used to install management daemon-related Python packages
-# directly to /usr/local/lib. We moved to a virtualenv because
-# these packages might conflict with apt-installed packages.
-# We may have a lingering version of acme that conflcits with
-# certbot, which we're about to install below, so remove it
-# first. Once acme is installed by an apt package, this might
-# break the package version and `apt-get install --reinstall python3-acme`
-# might be needed in that case.
-while [ -d /usr/local/lib/python3.4/dist-packages/acme ]; do
-	pip3 uninstall -y acme;
-done
-
 # duplicity is used to make backups of user data.
 #
 # virtualenv is used to isolate the Python 3 packages we
@@ -25,12 +14,12 @@ done
 #
 # certbot installs EFF's certbot which we use to
 # provision free TLS certificates.
-apt_install duplicity python-pip virtualenv certbot
+apt_install duplicity python3-pip virtualenv certbot rsync
 
 # b2sdk is used for backblaze backups.
-# boto is used for amazon aws backups.
+# boto3 is used for amazon aws backups.
 # Both are installed outside the pipenv, so they can be used by duplicity
-hide_output pip3 install --upgrade b2sdk boto
+hide_output pip3 install --upgrade b2sdk boto3
 
 # Create a virtualenv for the installation of Python 3 packages
 # used by the management daemon.
@@ -38,6 +27,12 @@ inst_dir=/usr/local/lib/mailinabox
 mkdir -p $inst_dir
 venv=$inst_dir/env
 if [ ! -d $venv ]; then
+	# A bug specific to Ubuntu 22.04 and Python 3.10 requires
+	# forcing a virtualenv directory layout option (see #2335
+	# and https://github.com/pypa/virtualenv/pull/2415). In
+	# our issue, reportedly installing python3-distutils didn't
+	# fix the problem.)
+	export DEB_PYTHON_INSTALL_LAYOUT='deb'
 	hide_output virtualenv -ppython3 $venv
 fi
 
@@ -49,16 +44,17 @@ hide_output $venv/bin/pip install --upgrade pip
 # NOTE: email_validator is repeated in setup/questions.sh, so please keep the versions synced.
 hide_output $venv/bin/pip install --upgrade \
 	rtyaml "email_validator>=1.0.0" "exclusiveprocess" \
-	flask dnspython python-dateutil \
+	flask dnspython python-dateutil expiringdict gunicorn \
-  qrcode[pil] pyotp \
+	qrcode[pil] pyotp \
-	"idna>=2.0.0" "cryptography==2.2.2" boto psutil postfix-mta-sts-resolver b2sdk
+	"idna>=2.0.0" "cryptography==37.0.2" psutil postfix-mta-sts-resolver \
+	b2sdk boto3
 
 # CONFIGURATION
 
 # Create a backup directory and a random key for encrypting backups.
-mkdir -p $STORAGE_ROOT/backup
+mkdir -p "$STORAGE_ROOT/backup"
-if [ ! -f $STORAGE_ROOT/backup/secret_key.txt ]; then
+if [ ! -f "$STORAGE_ROOT/backup/secret_key.txt" ]; then
-	$(umask 077; openssl rand -base64 2048 > $STORAGE_ROOT/backup/secret_key.txt)
+	(umask 077; openssl rand -base64 2048 > "$STORAGE_ROOT/backup/secret_key.txt")
 fi
 
 
@@ -70,24 +66,27 @@ rm -rf $assets_dir
 mkdir -p $assets_dir
 
 # jQuery CDN URL
-jquery_version=2.1.4
+jquery_version=2.2.4
 jquery_url=https://code.jquery.com
 
 # Get jQuery
-wget_verify $jquery_url/jquery-$jquery_version.min.js 43dc554608df885a59ddeece1598c6ace434d747 $assets_dir/jquery.min.js
+wget_verify $jquery_url/jquery-$jquery_version.min.js 69bb69e25ca7d5ef0935317584e6153f3fd9a88c $assets_dir/jquery.min.js
 
 # Bootstrap CDN URL
-bootstrap_version=3.3.7
+bootstrap_version=3.4.1
 bootstrap_url=https://github.com/twbs/bootstrap/releases/download/v$bootstrap_version/bootstrap-$bootstrap_version-dist.zip
 
 # Get Bootstrap
-wget_verify $bootstrap_url e6b1000b94e835ffd37f4c6dcbdad43f4b48a02a /tmp/bootstrap.zip
+wget_verify $bootstrap_url 0bb64c67c2552014d48ab4db81c2e8c01781f580 /tmp/bootstrap.zip
 unzip -q /tmp/bootstrap.zip -d $assets_dir
 mv $assets_dir/bootstrap-$bootstrap_version-dist $assets_dir/bootstrap
 rm -f /tmp/bootstrap.zip
 
 # Create an init script to start the management daemon and keep it
 # running after a reboot.
+# Set a long timeout since some commands take a while to run, matching
+# the timeout we set for PHP (fastcgi_read_timeout in the nginx confs).
+# Note: Authentication currently breaks with more than 1 gunicorn worker.
 cat > $inst_dir/start <<EOF;
 #!/bin/bash
 # Set character encoding flags to ensure that any non-ASCII don't cause problems.
@@ -96,8 +95,13 @@ export LC_ALL=en_US.UTF-8
 export LANG=en_US.UTF-8
 export LC_TYPE=en_US.UTF-8
 
+mkdir -p /var/lib/mailinabox
+tr -cd '[:xdigit:]' < /dev/urandom | head -c 32 > /var/lib/mailinabox/api.key
+chmod 640 /var/lib/mailinabox/api.key
+
 source $venv/bin/activate
-exec python $(pwd)/management/daemon.py
+export PYTHONPATH=$PWD/management
+exec gunicorn -b localhost:10222 -w 1 --timeout 630 wsgi:app
 EOF
 chmod +x $inst_dir/start
 cp --remove-destination conf/mailinabox.service /lib/systemd/system/mailinabox.service # target was previously a symlink so remove it first
@@ -112,7 +116,7 @@ minute=$((RANDOM % 60))  # avoid overloading mailinabox.email
 cat > /etc/cron.d/mailinabox-nightly << EOF;
 # Mail-in-a-Box --- Do not edit / will be overwritten on update.
 # Run nightly tasks: backup, status checks.
-$minute 3 * * *	root	(cd $(pwd) && management/daily_tasks.sh)
+$minute 1 * * *	root	(cd $PWD && management/daily_tasks.sh)
 EOF
 
 # Start the management server.

setup/migrate.py

@@ -9,6 +9,7 @@ import sys, os, os.path, glob, re, shutil
 
 sys.path.insert(0, 'management')
 from utils import load_environment, save_environment, shell
+import contextlib
 
 def migration_1(env):
 	# Re-arrange where we store SSL certificates. There was a typo also.
@@ -22,7 +23,7 @@ def migration_1(env):
 	# Migrate the 'domains' directory.
 	for sslfn in glob.glob(os.path.join( env["STORAGE_ROOT"], 'ssl/domains/*' )):
 		fn = os.path.basename(sslfn)
-		m = re.match("(.*)_(certifiate.pem|cert_sign_req.csr|private_key.pem)$", fn)
+		m = re.match(r"(.*)_(certifiate.pem|cert_sign_req.csr|private_key.pem)$", fn)
 		if m:
 			# get the new name for the file
 			domain_name, file_type = m.groups()
@@ -31,10 +32,8 @@ def migration_1(env):
 			move_file(sslfn, domain_name, file_type)
 
 	# Move the old domains directory if it is now empty.
-	try:
+	with contextlib.suppress(Exception):
 		os.rmdir(os.path.join( env["STORAGE_ROOT"], 'ssl/domains'))
-	except:
-		pass
 
 def migration_2(env):
 	# Delete the .dovecot_sieve script everywhere. This was formerly a copy of our spam -> Spam
@@ -165,15 +164,15 @@ def migration_12(env):
                     try:
                         table = table[0]
                         c = conn.cursor()
-                        dropcmd = "DROP TABLE %s" % table
+                        dropcmd = f"DROP TABLE {table}"
                         c.execute(dropcmd)
                     except:
-                        print("Failed to drop table", table, e)
+                        print("Failed to drop table", table)
             # Save.
             conn.commit()
             conn.close()
 
-            # Delete all sessions, requring users to login again to recreate carddav_*
+            # Delete all sessions, requiring users to login again to recreate carddav_*
             # databases
             conn = sqlite3.connect(os.path.join(env["STORAGE_ROOT"], "mail/roundcube/roundcube.sqlite"))
             c = conn.cursor()
@@ -186,6 +185,17 @@ def migration_13(env):
 	db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
 	shell("check_call", ["sqlite3", db, "CREATE TABLE mfa (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id INTEGER NOT NULL, type TEXT NOT NULL, secret TEXT NOT NULL, mru_token TEXT, label TEXT, FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE);"])
 
+def migration_14(env):
+	# Add the "auto_aliases" table.
+	db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
+	shell("check_call", ["sqlite3", db, "CREATE TABLE auto_aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, source TEXT NOT NULL UNIQUE, destination TEXT NOT NULL, permitted_senders TEXT);"])
+
+def migration_15(env):
+	# Add a column to the users table to store their quota limit.  Default to '0' for unlimited.
+	db = os.path.join(env["STORAGE_ROOT"], 'mail/users.sqlite')
+	shell("check_call", ["sqlite3", db, "ALTER TABLE users ADD COLUMN quota TEXT NOT NULL DEFAULT '0';"])
+
+
 ###########################################################
 
 def get_current_migration():
@@ -207,8 +217,8 @@ def run_migrations():
 	migration_id_file = os.path.join(env['STORAGE_ROOT'], 'mailinabox.version')
 	migration_id = None
 	if os.path.exists(migration_id_file):
-		with open(migration_id_file) as f:
+		with open(migration_id_file, encoding='utf-8') as f:
-			migration_id = f.read().strip();
+			migration_id = f.read().strip()
 
 	if migration_id is None:
 		# Load the legacy location of the migration ID. We'll drop support
@@ -217,7 +227,7 @@ def run_migrations():
 
 	if migration_id is None:
 		print()
-		print("%s file doesn't exists. Skipping migration..." % (migration_id_file,))
+		print(f"{migration_id_file} file doesn't exists. Skipping migration...")
 		return
 
 	ourver = int(migration_id)
@@ -248,7 +258,7 @@ def run_migrations():
 
 		# Write out our current version now. Do this sooner rather than later
 		# in case of any problems.
-		with open(migration_id_file, "w") as f:
+		with open(migration_id_file, "w", encoding='utf-8') as f:
 			f.write(str(ourver) + "\n")
 
 		# Delete the legacy location of this field.

setup/munin.sh

@@ -34,13 +34,13 @@ contact.admin.always_send warning critical
 EOF
 
 # The Debian installer touches these files and chowns them to www-data:adm for use with spawn-fcgi
-chown munin. /var/log/munin/munin-cgi-html.log
+chown munin /var/log/munin/munin-cgi-html.log
-chown munin. /var/log/munin/munin-cgi-graph.log
+chown munin /var/log/munin/munin-cgi-graph.log
 
 # ensure munin-node knows the name of this machine
 # and reduce logging level to warning
 tools/editconf.py /etc/munin/munin-node.conf -s \
-	host_name=$PRIMARY_HOSTNAME \
+	host_name="$PRIMARY_HOSTNAME" \
 	log_level=1
 
 # Update the activated plugins through munin's autoconfiguration.
@@ -52,9 +52,9 @@ find /etc/munin/plugins/ -lname /usr/share/munin/plugins/ntp_ -print0 | xargs -0
 
 # Deactivate monitoring of network interfaces that are not up. Otherwise we can get a lot of empty charts.
 for f in $(find /etc/munin/plugins/ \( -lname /usr/share/munin/plugins/if_ -o -lname /usr/share/munin/plugins/if_err_ -o -lname /usr/share/munin/plugins/bonding_err_ \)); do
-	IF=$(echo $f | sed s/.*_//);
+	IF=$(echo "$f" | sed s/.*_//);
-	if ! grep -qFx up /sys/class/net/$IF/operstate 2>/dev/null; then
+	if ! grep -qFx up "/sys/class/net/$IF/operstate" 2>/dev/null; then
-		rm $f;
+		rm "$f";
 	fi;
 done
 
@@ -62,7 +62,7 @@ done
 mkdir -p /var/lib/munin-node/plugin-state/
 
 # Create a systemd service for munin.
-ln -sf $(pwd)/management/munin_start.sh /usr/local/lib/mailinabox/munin_start.sh
+ln -sf "$PWD/management/munin_start.sh" /usr/local/lib/mailinabox/munin_start.sh
 chmod 0744 /usr/local/lib/mailinabox/munin_start.sh
 cp --remove-destination conf/munin.service /lib/systemd/system/munin.service # target was previously a symlink so remove first
 hide_output systemctl link -f /lib/systemd/system/munin.service

setup/network-checks.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # Install the 'host', 'sed', and and 'nc' tools. This script is run before
 # the rest of the system setup so we may not yet have things installed.
 apt_get_quiet install bind9-host sed netcat-openbsd
@@ -6,7 +7,7 @@ apt_get_quiet install bind9-host sed netcat-openbsd
 # The user might have chosen a name that was previously in use by a spammer
 # and will not be able to reliably send mail. Do this after any automatic
 # choices made above.
-if host $PRIMARY_HOSTNAME.dbl.spamhaus.org > /dev/null; then
+if host "$PRIMARY_HOSTNAME.dbl.spamhaus.org" > /dev/null; then
 	echo
 	echo "The hostname you chose '$PRIMARY_HOSTNAME' is listed in the"
 	echo "Spamhaus Domain Block List. See http://www.spamhaus.org/dbl/"
@@ -22,8 +23,8 @@ fi
 # The user might have ended up on an IP address that was previously in use
 # by a spammer, or the user may be deploying on a residential network. We
 # will not be able to reliably send mail in these cases.
-REVERSED_IPV4=$(echo $PUBLIC_IP | sed "s/\([0-9]*\).\([0-9]*\).\([0-9]*\).\([0-9]*\)/\4.\3.\2.\1/")
+REVERSED_IPV4=$(echo "$PUBLIC_IP" | sed "s/\([0-9]*\).\([0-9]*\).\([0-9]*\).\([0-9]*\)/\4.\3.\2.\1/")
-if host $REVERSED_IPV4.zen.spamhaus.org > /dev/null; then
+if host "$REVERSED_IPV4.zen.spamhaus.org" > /dev/null; then
 	echo
 	echo "The IP address $PUBLIC_IP is listed in the Spamhaus Block List."
 	echo "See http://www.spamhaus.org/query/ip/$PUBLIC_IP."

setup/nextcloud.sh

@@ -9,12 +9,71 @@ source /etc/mailinabox.conf # load global vars
 
 echo "Installing Nextcloud (contacts/calendar)..."
 
+# Nextcloud core and app (plugin) versions to install.
+# With each version we store a hash to ensure we install what we expect.
+
+# Nextcloud core
+# --------------
+# * See https://nextcloud.com/changelog for the latest version.
+# * Check https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html
+#   for whether it supports the version of PHP available on this machine.
+# * Since Nextcloud only supports upgrades from consecutive major versions,
+#   we automatically install intermediate versions as needed.
+# * The hash is the SHA1 hash of the ZIP package, which you can find by just running this script and
+#   copying it from the error message when it doesn't match what is below.
+nextcloud_ver=26.0.13
+nextcloud_hash=d5c10b650e5396d5045131c6d22c02a90572527c
+
+# Nextcloud apps
+# --------------
+# * Find the most recent tag that is compatible with the Nextcloud version above by:
+#   https://github.com/nextcloud-releases/contacts/tags
+#   https://github.com/nextcloud-releases/calendar/tags
+#   https://github.com/nextcloud/user_external/tags
+#
+# * For these three packages, contact, calendar and user_external, the hash is the SHA1 hash of
+# the ZIP package, which you can find by just running this script and copying it from
+# the error message when it doesn't match what is below:
+
+# Always ensure the versions are supported, see https://apps.nextcloud.com/apps/contacts
+contacts_ver=5.5.3
+contacts_hash=799550f38e46764d90fa32ca1a6535dccd8316e5
+
+# Always ensure the versions are supported, see https://apps.nextcloud.com/apps/calendar
+calendar_ver=4.7.6
+calendar_hash=a995bca4effeecb2cab25f3bbeac9bfe05fee766
+
+# Always ensure the versions are supported, see https://apps.nextcloud.com/apps/user_external
+user_external_ver=3.3.0
+user_external_hash=280d24eb2a6cb56b4590af8847f925c28d8d853e
+
+# Developer advice (test plan)
+# ----------------------------
+# When upgrading above versions, how to test?
+#
+# 1. Enter your server instance (or on the Vagrant image)
+# 1. Git clone <your fork>
+# 2. Git checkout <your fork>
+# 3. Run `sudo ./setup/nextcloud.sh`
+# 4. Ensure the installation completes. If any hashes mismatch, correct them.
+# 5. Enter nextcloud web, run following tests:
+# 5.1 You still can create, edit and delete contacts
+# 5.2 You still can create, edit and delete calendar events
+# 5.3 You still can create, edit and delete users
+# 5.4 Go to Administration > Logs and ensure no new errors are shown
+
+# Clear prior packages and install dependencies from apt.
 apt-get purge -qq -y owncloud* # we used to use the package manager
 
-apt_install php php-fpm \
+apt_install curl php"${PHP_VER}" php"${PHP_VER}"-fpm \
-	php-cli php-sqlite3 php-gd php-imap php-curl php-pear curl \
+	php"${PHP_VER}"-cli php"${PHP_VER}"-sqlite3 php"${PHP_VER}"-gd php"${PHP_VER}"-imap php"${PHP_VER}"-curl \
-	php-dev php-gd php-xml php-mbstring php-zip php-apcu php-json \
+	php"${PHP_VER}"-dev php"${PHP_VER}"-gd php"${PHP_VER}"-xml php"${PHP_VER}"-mbstring php"${PHP_VER}"-zip php"${PHP_VER}"-apcu \
-	php-intl php-imagick php-gmp php-bcmath
+	php"${PHP_VER}"-intl php"${PHP_VER}"-imagick php"${PHP_VER}"-gmp php"${PHP_VER}"-bcmath
+
+# Enable APC before Nextcloud tools are run.
+tools/editconf.py /etc/php/"$PHP_VER"/mods-available/apcu.ini -c ';' \
+	apc.enabled=1 \
+	apc.enable_cli=1
 
 InstallNextcloud() {
 
@@ -31,8 +90,8 @@ InstallNextcloud() {
 	echo "Upgrading to Nextcloud version $version"
 	echo
 
-        # Download and verify
+	# Download and verify
-        wget_verify https://download.nextcloud.com/server/releases/nextcloud-$version.zip $hash /tmp/nextcloud.zip
+	wget_verify "https://download.nextcloud.com/server/releases/nextcloud-$version.zip" "$hash" /tmp/nextcloud.zip
 
 	# Remove the current owncloud/Nextcloud
 	rm -rf /usr/local/lib/owncloud
@@ -46,18 +105,18 @@ InstallNextcloud() {
 	# their github repositories.
 	mkdir -p /usr/local/lib/owncloud/apps
 
-	wget_verify https://github.com/nextcloud/contacts/releases/download/v$version_contacts/contacts.tar.gz $hash_contacts /tmp/contacts.tgz
+	wget_verify "https://github.com/nextcloud-releases/contacts/archive/refs/tags/v$version_contacts.tar.gz" "$hash_contacts" /tmp/contacts.tgz
 	tar xf /tmp/contacts.tgz -C /usr/local/lib/owncloud/apps/
 	rm /tmp/contacts.tgz
 
-	wget_verify https://github.com/nextcloud/calendar/releases/download/v$version_calendar/calendar.tar.gz $hash_calendar /tmp/calendar.tgz
+	wget_verify "https://github.com/nextcloud-releases/calendar/archive/refs/tags/v$version_calendar.tar.gz" "$hash_calendar" /tmp/calendar.tgz
 	tar xf /tmp/calendar.tgz -C /usr/local/lib/owncloud/apps/
 	rm /tmp/calendar.tgz
 
 	# Starting with Nextcloud 15, the app user_external is no longer included in Nextcloud core,
 	# we will install from their github repository.
 	if [ -n "$version_user_external" ]; then
-		wget_verify https://github.com/nextcloud/user_external/releases/download/v$version_user_external/user_external-$version_user_external.tar.gz $hash_user_external /tmp/user_external.tgz
+		wget_verify "https://github.com/nextcloud-releases/user_external/releases/download/v$version_user_external/user_external-v$version_user_external.tar.gz" "$hash_user_external" /tmp/user_external.tgz
 		tar -xf /tmp/user_external.tgz -C /usr/local/lib/owncloud/apps/
 		rm /tmp/user_external.tgz
 	fi
@@ -67,54 +126,47 @@ InstallNextcloud() {
 
 	# Create a symlink to the config.php in STORAGE_ROOT (for upgrades we're restoring the symlink we previously
 	# put in, and in new installs we're creating a symlink and will create the actual config later).
-	ln -sf $STORAGE_ROOT/owncloud/config.php /usr/local/lib/owncloud/config/config.php
+	ln -sf "$STORAGE_ROOT/owncloud/config.php" /usr/local/lib/owncloud/config/config.php
 
 	# Make sure permissions are correct or the upgrade step won't run.
 	# $STORAGE_ROOT/owncloud may not yet exist, so use -f to suppress
 	# that error.
-	chown -f -R www-data.www-data $STORAGE_ROOT/owncloud /usr/local/lib/owncloud || /bin/true
+	chown -f -R www-data:www-data "$STORAGE_ROOT/owncloud" /usr/local/lib/owncloud || /bin/true
 
 	# If this isn't a new installation, immediately run the upgrade script.
 	# Then check for success (0=ok and 3=no upgrade needed, both are success).
-	if [ -e $STORAGE_ROOT/owncloud/owncloud.db ]; then
+	if [ -e "$STORAGE_ROOT/owncloud/owncloud.db" ]; then
 		# ownCloud 8.1.1 broke upgrades. It may fail on the first attempt, but
 		# that can be OK.
-		sudo -u www-data php /usr/local/lib/owncloud/occ upgrade
+		sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ upgrade
-		if [ \( $? -ne 0 \) -a \( $? -ne 3 \) ]; then
+		E=$?
+		if [ $E -ne 0 ] && [ $E -ne 3 ]; then
 			echo "Trying ownCloud upgrade again to work around ownCloud upgrade bug..."
-			sudo -u www-data php /usr/local/lib/owncloud/occ upgrade
+			sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ upgrade
-			if [ \( $? -ne 0 \) -a \( $? -ne 3 \) ]; then exit 1; fi
+			E=$?
-			sudo -u www-data php /usr/local/lib/owncloud/occ maintenance:mode --off
+			if [ $E -ne 0 ] && [ $E -ne 3 ]; then exit 1; fi
+			sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ maintenance:mode --off
 			echo "...which seemed to work."
 		fi
 
 		# Add missing indices. NextCloud didn't include this in the normal upgrade because it might take some time.
-		sudo -u www-data php /usr/local/lib/owncloud/occ db:add-missing-indices
+		sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ db:add-missing-indices
+		sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ db:add-missing-primary-keys
 
 		# Run conversion to BigInt identifiers, this process may take some time on large tables.
-		sudo -u www-data php /usr/local/lib/owncloud/occ db:convert-filecache-bigint --no-interaction
+		sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ db:convert-filecache-bigint --no-interaction
 	fi
 }
 
-# Nextcloud Version to install. Checks are done down below to step through intermediate versions.
-nextcloud_ver=20.0.8
-nextcloud_hash=372b0b4bb07c7984c04917aff86b280e68fbe761
-contacts_ver=3.5.1
-contacts_hash=d2ffbccd3ed89fa41da20a1dff149504c3b33b93
-calendar_ver=2.2.0
-calendar_hash=673ad72ca28adb8d0f209015ff2dca52ffad99af
-user_external_ver=1.0.0
-user_external_hash=3bf2609061d7214e7f0f69dd8883e55c4ec8f50a
-
 # Current Nextcloud Version, #1623
 # Checking /usr/local/lib/owncloud/version.php shows version of the Nextcloud application, not the DB
-# $STORAGE_ROOT/owncloud is kept together even during a backup.  It is better to rely on config.php than
+# $STORAGE_ROOT/owncloud is kept together even during a backup. It is better to rely on config.php than
 # version.php since the restore procedure can leave the system in a state where you have a newer Nextcloud
 # application version than the database.
 
 # If config.php exists, get version number, otherwise CURRENT_NEXTCLOUD_VER is empty.
 if [ -f "$STORAGE_ROOT/owncloud/config.php" ]; then
-	CURRENT_NEXTCLOUD_VER=$(php -r "include(\"$STORAGE_ROOT/owncloud/config.php\"); echo(\$CONFIG['version']);")
+	CURRENT_NEXTCLOUD_VER=$(php"$PHP_VER" -r "include(\"$STORAGE_ROOT/owncloud/config.php\"); echo(\$CONFIG['version']);")
 else
 	CURRENT_NEXTCLOUD_VER=""
 fi
@@ -123,8 +175,8 @@ fi
 # from the version currently installed, do the install/upgrade
 if [ ! -d /usr/local/lib/owncloud/ ] || [[ ! ${CURRENT_NEXTCLOUD_VER} =~ ^$nextcloud_ver ]]; then
 
-	# Stop php-fpm if running. If theyre not running (which happens on a previously failed install), dont bail.
+	# Stop php-fpm if running. If they are not running (which happens on a previously failed install), dont bail.
-	service php7.2-fpm stop &> /dev/null || /bin/true
+	service php"$PHP_VER"-fpm stop &> /dev/null || /bin/true
 
 	# Backup the existing ownCloud/Nextcloud.
 	# Create a backup directory to store the current installation and database to
@@ -134,71 +186,75 @@ if [ ! -d /usr/local/lib/owncloud/ ] || [[ ! ${CURRENT_NEXTCLOUD_VER} =~ ^$nextc
 		echo "Upgrading Nextcloud --- backing up existing installation, configuration, and database to directory to $BACKUP_DIRECTORY..."
 		cp -r /usr/local/lib/owncloud "$BACKUP_DIRECTORY/owncloud-install"
 	fi
-	if [ -e $STORAGE_ROOT/owncloud/owncloud.db ]; then
+	if [ -e "$STORAGE_ROOT/owncloud/owncloud.db" ]; then
-		cp $STORAGE_ROOT/owncloud/owncloud.db $BACKUP_DIRECTORY
+		cp "$STORAGE_ROOT/owncloud/owncloud.db" "$BACKUP_DIRECTORY"
 	fi
-	if [ -e $STORAGE_ROOT/owncloud/config.php ]; then
+	if [ -e "$STORAGE_ROOT/owncloud/config.php" ]; then
-		cp $STORAGE_ROOT/owncloud/config.php $BACKUP_DIRECTORY
+		cp "$STORAGE_ROOT/owncloud/config.php" "$BACKUP_DIRECTORY"
 	fi
 
 	# If ownCloud or Nextcloud was previously installed....
-	if [ ! -z ${CURRENT_NEXTCLOUD_VER} ]; then
+	if [ -n "${CURRENT_NEXTCLOUD_VER}" ]; then
 		# Database migrations from ownCloud are no longer possible because ownCloud cannot be run under
 		# PHP 7.
+
+		if [ -e "$STORAGE_ROOT/owncloud/config.php" ]; then
+			# Remove the read-onlyness of the config, which is needed for migrations, especially for v24
+			sed -i -e '/config_is_read_only/d' "$STORAGE_ROOT/owncloud/config.php"
+		fi
+
 		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^[89] ]]; then
 			echo "Upgrades from Mail-in-a-Box prior to v0.28 (dated July 30, 2018) with Nextcloud < 13.0.6 (you have ownCloud 8 or 9) are not supported. Upgrade to Mail-in-a-Box version v0.30 first. Setup will continue, but skip the Nextcloud migration."
 			return 0
 		elif [[ ${CURRENT_NEXTCLOUD_VER} =~ ^1[012] ]]; then
 			echo "Upgrades from Mail-in-a-Box prior to v0.28 (dated July 30, 2018) with Nextcloud < 13.0.6 (you have ownCloud 10, 11 or 12) are not supported. Upgrade to Mail-in-a-Box version v0.30 first. Setup will continue, but skip the Nextcloud migration."
 			return 0
-		elif [[ ${CURRENT_NEXTCLOUD_VER} =~ ^13 ]]; then
+		elif [[ ${CURRENT_NEXTCLOUD_VER} =~ ^1[3456789] ]]; then
-			# If we are running Nextcloud 13, upgrade to Nextcloud 14
+			echo "Upgrades from Mail-in-a-Box prior to v60 with Nextcloud 19 or earlier are not supported. Upgrade to the latest Mail-in-a-Box version supported on your machine first. Setup will continue, but skip the Nextcloud migration."
-			InstallNextcloud 14.0.6 4e43a57340f04c2da306c8eea98e30040399ae5a 3.3.0 e55d0357c6785d3b1f3b5f21780cb6d41d32443a 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466
+			return 0
-			CURRENT_NEXTCLOUD_VER="14.0.6"
 		fi
-		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^14 ]]; then
+
-			# During the upgrade from Nextcloud 14 to 15, user_external may cause the upgrade to fail.
+		# Hint: whenever you bump, remember this:
-			# We will disable it here before the upgrade and install it again after the upgrade.
+		# - Run a server with the previous version
-			hide_output sudo -u www-data php /usr/local/lib/owncloud/console.php app:disable user_external
+		# - On a new if-else block, copy the versions/hashes from the previous version
-			InstallNextcloud 15.0.8 4129d8d4021c435f2e86876225fb7f15adf764a3 3.3.0 e55d0357c6785d3b1f3b5f21780cb6d41d32443a 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466 0.7.0 555a94811daaf5bdd336c5e48a78aa8567b86437
+		# - Run sudo ./setup/start.sh on the new machine. Upon completion, test its basic functionalities.
-			CURRENT_NEXTCLOUD_VER="15.0.8"
+
+		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^20 ]]; then
+			InstallNextcloud 21.0.7 f5c7079c5b56ce1e301c6a27c0d975d608bb01c9 4.0.7 45e7cf4bfe99cd8d03625cf9e5a1bb2e90549136 3.0.4 d0284b68135777ec9ca713c307216165b294d0fe
+			CURRENT_NEXTCLOUD_VER="21.0.7"
+		fi
+		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^21 ]]; then
+			InstallNextcloud 22.2.6 9d39741f051a8da42ff7df46ceef2653a1dc70d9 4.1.0 697f6b4a664e928d72414ea2731cb2c9d1dc3077 3.2.2 ce4030ab57f523f33d5396c6a81396d440756f5f 3.0.0 0df781b261f55bbde73d8c92da3f99397000972f
+			CURRENT_NEXTCLOUD_VER="22.2.6"
+		fi
+		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^22 ]]; then
+			InstallNextcloud 23.0.12 d138641b8e7aabebe69bb3ec7c79a714d122f729 4.1.0 697f6b4a664e928d72414ea2731cb2c9d1dc3077 3.2.2 ce4030ab57f523f33d5396c6a81396d440756f5f 3.0.0 0df781b261f55bbde73d8c92da3f99397000972f
+			CURRENT_NEXTCLOUD_VER="23.0.12"
+		fi
+		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^23 ]]; then
+			InstallNextcloud 24.0.12 7aa5d61632c1ccf4ca3ff00fb6b295d318c05599 4.1.0 697f6b4a664e928d72414ea2731cb2c9d1dc3077 3.2.2 ce4030ab57f523f33d5396c6a81396d440756f5f 3.0.0 0df781b261f55bbde73d8c92da3f99397000972f
+			CURRENT_NEXTCLOUD_VER="24.0.12"
+		fi
+        if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^24 ]]; then
+			InstallNextcloud 25.0.7 a5a565c916355005c7b408dd41a1e53505e1a080 5.3.0 4b0a6666374e3b55cfd2ae9b72e1d458b87d4c8c 4.4.2 21a42e15806adc9b2618760ef94f1797ef399e2f 3.2.0 a494073dcdecbbbc79a9c77f72524ac9994d2eec
+			CURRENT_NEXTCLOUD_VER="25.0.7"
 		fi
-		if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^15 ]]; then
-                        InstallNextcloud 16.0.6 0bb3098455ec89f5af77a652aad553ad40a88819 3.3.0 e55d0357c6785d3b1f3b5f21780cb6d41d32443a 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466 0.7.0 555a94811daaf5bdd336c5e48a78aa8567b86437
-                        CURRENT_NEXTCLOUD_VER="16.0.6"
-        	fi
-	        if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^16 ]]; then
-                        InstallNextcloud 17.0.6 50b98d2c2f18510b9530e558ced9ab51eb4f11b0 3.3.0 e55d0357c6785d3b1f3b5f21780cb6d41d32443a 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466 0.7.0 555a94811daaf5bdd336c5e48a78aa8567b86437
-                        CURRENT_NEXTCLOUD_VER="17.0.6"
-	        fi
-	        if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^17 ]]; then
-			echo "ALTER TABLE oc_flow_operations ADD COLUMN entity VARCHAR;" | sqlite3 $STORAGE_ROOT/owncloud/owncloud.db
-                        InstallNextcloud 18.0.10 39c0021a8b8477c3f1733fddefacfa5ebf921c68 3.4.1 aee680a75e95f26d9285efd3c1e25cf7f3bfd27e 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466 1.0.0 3bf2609061d7214e7f0f69dd8883e55c4ec8f50a
-                        CURRENT_NEXTCLOUD_VER="18.0.10"
-	        fi
-	        if [[ ${CURRENT_NEXTCLOUD_VER} =~ ^18 ]]; then
-                        InstallNextcloud 19.0.4 01e98791ba12f4860d3d4047b9803f97a1b55c60 3.4.1 aee680a75e95f26d9285efd3c1e25cf7f3bfd27e 2.0.3 9d9717b29337613b72c74e9914c69b74b346c466 1.0.0 3bf2609061d7214e7f0f69dd8883e55c4ec8f50a
-                        CURRENT_NEXTCLOUD_VER="19.0.4"
-	        fi
 	fi
 
 	InstallNextcloud $nextcloud_ver $nextcloud_hash $contacts_ver $contacts_hash $calendar_ver $calendar_hash $user_external_ver $user_external_hash
-
-	# Nextcloud 20 needs to have some optional columns added
-	sudo -u www-data php /usr/local/lib/owncloud/occ db:add-missing-columns
 fi
 
 # ### Configuring Nextcloud
 
 # Setup Nextcloud if the Nextcloud database does not yet exist. Running setup when
 # the database does exist wipes the database and user data.
-if [ ! -f $STORAGE_ROOT/owncloud/owncloud.db ]; then
+if [ ! -f "$STORAGE_ROOT/owncloud/owncloud.db" ]; then
 	# Create user data directory
-	mkdir -p $STORAGE_ROOT/owncloud
+	mkdir -p "$STORAGE_ROOT/owncloud"
 
 	# Create an initial configuration file.
-	instanceid=oc$(echo $PRIMARY_HOSTNAME | sha1sum | fold -w 10 | head -n 1)
+	instanceid=oc$(echo "$PRIMARY_HOSTNAME" | sha1sum | fold -w 10 | head -n 1)
-	cat > $STORAGE_ROOT/owncloud/config.php <<EOF;
+	cat > "$STORAGE_ROOT/owncloud/config.php" <<EOF;
 <?php
 \$CONFIG = array (
   'datadirectory' => '$STORAGE_ROOT/owncloud',
@@ -211,22 +267,13 @@ if [ ! -f $STORAGE_ROOT/owncloud/owncloud.db ]; then
   'overwrite.cli.url' => '/cloud',
   'user_backends' => array(
     array(
-      'class' => 'OC_User_IMAP',
+      'class' => '\OCA\UserExternal\IMAP',
-        'arguments' => array(
+      'arguments' => array(
-          '127.0.0.1', 143, null
+        '127.0.0.1', 143, null, null, false, false
-         ),
+       ),
     ),
   ),
   'memcache.local' => '\OC\Memcache\APCu',
-  'mail_smtpmode' => 'sendmail',
-  'mail_smtpsecure' => '',
-  'mail_smtpauthtype' => 'LOGIN',
-  'mail_smtpauth' => false,
-  'mail_smtphost' => '',
-  'mail_smtpport' => '',
-  'mail_smtpname' => '',
-  'mail_smtppassword' => '',
-  'mail_from_address' => 'owncloud',
 );
 ?>
 EOF
@@ -251,12 +298,12 @@ EOF
 EOF
 
 	# Set permissions
-	chown -R www-data.www-data $STORAGE_ROOT/owncloud /usr/local/lib/owncloud
+	chown -R www-data:www-data "$STORAGE_ROOT/owncloud" /usr/local/lib/owncloud
 
 	# Execute Nextcloud's setup step, which creates the Nextcloud sqlite database.
 	# It also wipes it if it exists. And it updates config.php with database
 	# settings and deletes the autoconfig.php file.
-	(cd /usr/local/lib/owncloud; sudo -u www-data php /usr/local/lib/owncloud/index.php;)
+	(cd /usr/local/lib/owncloud || exit; sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/index.php;)
 fi
 
 # Update config.php.
@@ -272,53 +319,70 @@ fi
 # Use PHP to read the settings file, modify it, and write out the new settings array.
 TIMEZONE=$(cat /etc/timezone)
 CONFIG_TEMP=$(/bin/mktemp)
-php <<EOF > $CONFIG_TEMP && mv $CONFIG_TEMP $STORAGE_ROOT/owncloud/config.php;
+php"$PHP_VER" <<EOF > "$CONFIG_TEMP" && mv "$CONFIG_TEMP" "$STORAGE_ROOT/owncloud/config.php";
 <?php
 include("$STORAGE_ROOT/owncloud/config.php");
 
+\$CONFIG['config_is_read_only'] = false;
+
 \$CONFIG['trusted_domains'] = array('$PRIMARY_HOSTNAME');
 
 \$CONFIG['memcache.local'] = '\OC\Memcache\APCu';
-\$CONFIG['overwrite.cli.url'] = '/cloud';
+\$CONFIG['overwrite.cli.url'] = 'https://${PRIMARY_HOSTNAME}/cloud';
-\$CONFIG['mail_from_address'] = 'administrator'; # just the local part, matches our master administrator address
 
 \$CONFIG['logtimezone'] = '$TIMEZONE';
 \$CONFIG['logdateformat'] = 'Y-m-d H:i:s';
 
-\$CONFIG['mail_domain'] = '$PRIMARY_HOSTNAME';
+\$CONFIG['user_backends'] = array(
+  array(
+    'class' => '\OCA\UserExternal\IMAP',
+    'arguments' => array(
+      '127.0.0.1', 143, null, null, false, false
+    ),
+  ),
+);
 
-\$CONFIG['user_backends'] = array(array('class' => 'OC_User_IMAP','arguments' => array('127.0.0.1', 143, null),),);
+\$CONFIG['mail_domain'] = '$PRIMARY_HOSTNAME';
+\$CONFIG['mail_from_address'] = 'administrator'; # just the local part, matches the required administrator alias on mail_domain/$PRIMARY_HOSTNAME
+\$CONFIG['mail_smtpmode'] = 'sendmail';
+\$CONFIG['mail_smtpauth'] = true; # if smtpmode is smtp
+\$CONFIG['mail_smtphost'] = '127.0.0.1'; # if smtpmode is smtp
+\$CONFIG['mail_smtpport'] = '587'; # if smtpmode is smtp
+\$CONFIG['mail_smtpsecure'] = ''; # if smtpmode is smtp, must be empty string
+\$CONFIG['mail_smtpname'] = ''; # if smtpmode is smtp, set this to a mail user
+\$CONFIG['mail_smtppassword'] = ''; # if smtpmode is smtp, set this to the user's password
 
 echo "<?php\n\\\$CONFIG = ";
 var_export(\$CONFIG);
 echo ";";
 ?>
 EOF
-chown www-data.www-data $STORAGE_ROOT/owncloud/config.php
+chown www-data:www-data "$STORAGE_ROOT/owncloud/config.php"
 
 # Enable/disable apps. Note that this must be done after the Nextcloud setup.
 # The firstrunwizard gave Josh all sorts of problems, so disabling that.
 # user_external is what allows Nextcloud to use IMAP for login. The contacts
 # and calendar apps are the extensions we really care about here.
-hide_output sudo -u www-data php /usr/local/lib/owncloud/console.php app:disable firstrunwizard
+hide_output sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/console.php app:disable firstrunwizard
-hide_output sudo -u www-data php /usr/local/lib/owncloud/console.php app:enable user_external
+hide_output sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/console.php app:enable user_external
-hide_output sudo -u www-data php /usr/local/lib/owncloud/console.php app:enable contacts
+hide_output sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/console.php app:enable contacts
-hide_output sudo -u www-data php /usr/local/lib/owncloud/console.php app:enable calendar
+hide_output sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/console.php app:enable calendar
 
 # When upgrading, run the upgrade script again now that apps are enabled. It seems like
 # the first upgrade at the top won't work because apps may be disabled during upgrade?
 # Check for success (0=ok, 3=no upgrade needed).
-sudo -u www-data php /usr/local/lib/owncloud/occ upgrade
+sudo -u www-data php"$PHP_VER" /usr/local/lib/owncloud/occ upgrade
-if [ \( $? -ne 0 \) -a \( $? -ne 3 \) ]; then exit 1; fi
+E=$?
+if [ $E -ne 0 ] && [ $E -ne 3 ]; then exit 1; fi
 
 # Disable default apps that we don't support
 sudo -u www-data \
-	php /usr/local/lib/owncloud/occ app:disable photos dashboard activity \
+	php"$PHP_VER" /usr/local/lib/owncloud/occ app:disable photos dashboard activity \
 	| (grep -v "No such app enabled" || /bin/true)
 
 # Set PHP FPM values to support large file uploads
 # (semicolon is the comment character in this file, hashes produce deprecation warnings)
-tools/editconf.py /etc/php/7.2/fpm/php.ini -c ';' \
+tools/editconf.py /etc/php/"$PHP_VER"/fpm/php.ini -c ';' \
 	upload_max_filesize=16G \
 	post_max_size=16G \
 	output_buffering=16384 \
@@ -327,7 +391,7 @@ tools/editconf.py /etc/php/7.2/fpm/php.ini -c ';' \
 	short_open_tag=On
 
 # Set Nextcloud recommended opcache settings
-tools/editconf.py /etc/php/7.2/cli/conf.d/10-opcache.ini -c ';' \
+tools/editconf.py /etc/php/"$PHP_VER"/cli/conf.d/10-opcache.ini -c ';' \
 	opcache.enable=1 \
 	opcache.enable_cli=1 \
 	opcache.interned_strings_buffer=8 \
@@ -336,22 +400,44 @@ tools/editconf.py /etc/php/7.2/cli/conf.d/10-opcache.ini -c ';' \
 	opcache.save_comments=1 \
 	opcache.revalidate_freq=1
 
-# If apc is explicitly disabled we need to enable it
+# Migrate users_external data from <0.6.0 to version 3.0.0
-if grep -q apc.enabled=0 /etc/php/7.2/mods-available/apcu.ini; then
+# (see https://github.com/nextcloud/user_external).
-	tools/editconf.py /etc/php/7.2/mods-available/apcu.ini -c ';' \
+# This version was probably in use in Mail-in-a-Box v0.41 (February 26, 2019) and earlier.
-		apc.enabled=1
+# We moved to v0.6.3 in 193763f8. Ignore errors - maybe there are duplicated users with the
-fi
+# correct backend already.
+sqlite3 "$STORAGE_ROOT/owncloud/owncloud.db" "UPDATE oc_users_external SET backend='127.0.0.1';" || /bin/true
 
-# Set up a cron job for Nextcloud.
+# Set up a general cron job for Nextcloud.
+# Also add another job for Calendar updates, per advice in the Nextcloud docs
+# https://docs.nextcloud.com/server/24/admin_manual/groupware/calendar.html#background-jobs
 cat > /etc/cron.d/mailinabox-nextcloud << EOF;
 #!/bin/bash
 # Mail-in-a-Box
-*/5 * * * *	root	sudo -u www-data php -f /usr/local/lib/owncloud/cron.php
+*/5 * * * *	www-data	php$PHP_VER -f /usr/local/lib/owncloud/cron.php
+*/5 * * * *	www-data	php$PHP_VER -f /usr/local/lib/owncloud/occ dav:send-event-reminders
 EOF
 chmod +x /etc/cron.d/mailinabox-nextcloud
 
-# Remove previous hourly cronjob
+# We also need to change the sending mode from background-job to occ.
-rm -f /etc/cron.hourly/mailinabox-owncloud
+# Or else the reminders will just be sent as soon as possible when the background jobs run.
+hide_output sudo -u www-data php"$PHP_VER" -f /usr/local/lib/owncloud/occ config:app:set dav sendEventRemindersMode --value occ
+
+# Now set the config to read-only.
+# Do this only at the very bottom when no further occ commands are needed.
+sed -i'' "s/'config_is_read_only'\s*=>\s*false/'config_is_read_only' => true/" "$STORAGE_ROOT/owncloud/config.php"
+
+# Rotate the nextcloud.log file
+cat > /etc/logrotate.d/nextcloud <<EOF
+# Nextcloud logs
+$STORAGE_ROOT/owncloud/nextcloud.log {
+		size 10M
+		create 640 www-data www-data
+		rotate 30
+		copytruncate
+		missingok
+		compress
+}
+EOF
 
 # There's nothing much of interest that a user could do as an admin for Nextcloud,
 # and there's a lot they could mess up, so we don't make any users admins of Nextcloud.
@@ -363,4 +449,4 @@ rm -f /etc/cron.hourly/mailinabox-owncloud
 # ```
 
 # Enable PHP modules and restart PHP.
-restart_service php7.2-fpm
+restart_service php"$PHP_VER"-fpm

setup/preflight.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # Are we running as root?
 if [[ $EUID -ne 0 ]]; then
 	echo "This script must be run as root. Please re-run like this:"
@@ -7,11 +8,14 @@ if [[ $EUID -ne 0 ]]; then
 	exit 1
 fi
 
-# Check that we are running on Ubuntu 18.04 LTS (or 18.04.xx).
+# Check that we are running on Ubuntu 22.04 LTS (or 22.04.xx).
-if [ "$(lsb_release -d | sed 's/.*:\s*//' | sed 's/18\.04\.[0-9]/18.04/' )" != "Ubuntu 18.04 LTS" ]; then
+# Pull in the variables defined in /etc/os-release but in a
-	echo "Mail-in-a-Box only supports being installed on Ubuntu 18.04, sorry. You are running:"
+# namespace to avoid polluting our variables.
+source <(cat /etc/os-release | sed s/^/OS_RELEASE_/)
+if [ "${OS_RELEASE_ID:-}" != "ubuntu" ] || [ "${OS_RELEASE_VERSION_ID:-}" != "22.04" ]; then
+	echo "Mail-in-a-Box only supports being installed on Ubuntu 22.04, sorry. You are running:"
 	echo
-	lsb_release -d | sed 's/.*:\s*//'
+	echo "${OS_RELEASE_ID:-"Unknown linux distribution"} ${OS_RELEASE_VERSION_ID:-}"
 	echo
 	echo "We can't write scripts that run on every possible setup, sorry."
 	exit 1
@@ -26,16 +30,16 @@ fi
 #
 # Skip the check if we appear to be running inside of Vagrant, because that's really just for testing.
 TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}')
-if [ $TOTAL_PHYSICAL_MEM -lt 490000 ]; then
+if [ "$TOTAL_PHYSICAL_MEM" -lt 490000 ]; then
 if [ ! -d /vagrant ]; then
-	TOTAL_PHYSICAL_MEM=$(expr \( \( $TOTAL_PHYSICAL_MEM \* 1024 \) / 1000 \) / 1000)
+	TOTAL_PHYSICAL_MEM=$(( TOTAL_PHYSICAL_MEM * 1024 / 1000 / 1000 ))
 	echo "Your Mail-in-a-Box needs more memory (RAM) to function properly."
 	echo "Please provision a machine with at least 512 MB, 1 GB recommended."
 	echo "This machine has $TOTAL_PHYSICAL_MEM MB memory."
 	exit
 fi
 fi
-if [ $TOTAL_PHYSICAL_MEM -lt 750000 ]; then
+if [ "$TOTAL_PHYSICAL_MEM" -lt 750000 ]; then
 	echo "WARNING: Your Mail-in-a-Box has less than 768 MB of memory."
 	echo "         It might run unreliably when under heavy load."
 fi

setup/questions.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 if [ -z "${NONINTERACTIVE:-}" ]; then
 	# Install 'dialog' so we can ask the user questions. The original motivation for
 	# this was being able to ask the user for input even if stdin has been redirected,
@@ -7,7 +8,7 @@ if [ -z "${NONINTERACTIVE:-}" ]; then
 	#
 	# Also install dependencies needed to validate the email address.
 	if [ ! -f /usr/bin/dialog ] || [ ! -f /usr/bin/python3 ] || [ ! -f /usr/bin/pip3 ]; then
-		echo Installing packages needed for setup...
+		echo "Installing packages needed for setup..."
 		apt-get -q -q update
 		apt_get_quiet install dialog python3 python3-pip  || exit 1
 	fi
@@ -31,7 +32,7 @@ if [ -z "${PRIMARY_HOSTNAME:-}" ]; then
 		# domain the user possibly wants to use is example.com then.
 		# We strip the string "box." from the hostname to get the mail
 		# domain. If the hostname differs, nothing happens here.
-		DEFAULT_DOMAIN_GUESS=$(echo $(get_default_hostname) | sed -e 's/^box\.//')
+		DEFAULT_DOMAIN_GUESS=$(get_default_hostname | sed -e 's/^box\.//')
 
 		# This is the first run. Ask the user for his email address so we can
 		# provide the best default for the box's hostname.
@@ -55,7 +56,7 @@ you really want.
 		do
 			input_box "Your Email Address" \
 				"That's not a valid email address.\n\nWhat email address are you setting this box up to manage?" \
-				$EMAIL_ADDR \
+				"$EMAIL_ADDR" \
 				EMAIL_ADDR
 			if [ -z "$EMAIL_ADDR" ]; then
 				# user hit ESC/cancel
@@ -65,7 +66,7 @@ you really want.
 
 		# Take the part after the @-sign as the user's domain name, and add
 		# 'box.' to the beginning to create a default hostname for this machine.
-		DEFAULT_PRIMARY_HOSTNAME=box.$(echo $EMAIL_ADDR | sed 's/.*@//')
+		DEFAULT_PRIMARY_HOSTNAME=box.$(echo "$EMAIL_ADDR" | sed 's/.*@//')
 	fi
 
 	input_box "Hostname" \
@@ -74,7 +75,7 @@ you really want.
 address, so we're suggesting $DEFAULT_PRIMARY_HOSTNAME.
 \n\nYou can change it, but we recommend you don't.
 \n\nHostname:" \
-		$DEFAULT_PRIMARY_HOSTNAME \
+		"$DEFAULT_PRIMARY_HOSTNAME" \
 		PRIMARY_HOSTNAME
 
 	if [ -z "$PRIMARY_HOSTNAME" ]; then
@@ -92,7 +93,7 @@ if [ -z "${PUBLIC_IP:-}" ]; then
 
 	# On the first run, if we got an answer from the Internet then don't
 	# ask the user.
-	if [[ -z "${DEFAULT_PUBLIC_IP:-}" && ! -z "$GUESSED_IP" ]]; then
+	if [[ -z "${DEFAULT_PUBLIC_IP:-}" && -n "$GUESSED_IP" ]]; then
 		PUBLIC_IP=$GUESSED_IP
 
 	# Otherwise on the first run at least provide a default.
@@ -109,7 +110,7 @@ if [ -z "${PUBLIC_IP:-}" ]; then
 		input_box "Public IP Address" \
 			"Enter the public IP address of this machine, as given to you by your ISP.
 			\n\nPublic IP address:" \
-			${DEFAULT_PUBLIC_IP:-} \
+			"${DEFAULT_PUBLIC_IP:-}" \
 			PUBLIC_IP
 
 		if [ -z "$PUBLIC_IP" ]; then
@@ -125,7 +126,7 @@ if [ -z "${PUBLIC_IPV6:-}" ]; then
 	# Ask the Internet.
 	GUESSED_IP=$(get_publicip_from_web_service 6)
 	MATCHED=0
-	if [[ -z "${DEFAULT_PUBLIC_IPV6:-}" && ! -z "$GUESSED_IP" ]]; then
+	if [[ -z "${DEFAULT_PUBLIC_IPV6:-}" && -n "$GUESSED_IP" ]]; then
 		PUBLIC_IPV6=$GUESSED_IP
 	elif [[ "${DEFAULT_PUBLIC_IPV6:-}" == "$GUESSED_IP" ]]; then
 		# No IPv6 entered and machine seems to have none, or what
@@ -141,10 +142,10 @@ if [ -z "${PUBLIC_IPV6:-}" ]; then
 			"Enter the public IPv6 address of this machine, as given to you by your ISP.
 			\n\nLeave blank if the machine does not have an IPv6 address.
 			\n\nPublic IPv6 address:" \
-			${DEFAULT_PUBLIC_IPV6:-} \
+			"${DEFAULT_PUBLIC_IPV6:-}" \
 			PUBLIC_IPV6
 
-		if [ ! $PUBLIC_IPV6_EXITCODE ]; then
+		if [ ! -n "$PUBLIC_IPV6_EXITCODE" ]; then
 			# user hit ESC/cancel
 			exit
 		fi
@@ -162,7 +163,7 @@ if [ -z "${PRIVATE_IPV6:-}" ]; then
 fi
 if [[ -z "$PRIVATE_IP" && -z "$PRIVATE_IPV6" ]]; then
 	echo
-	echo "I could not determine the IP or IPv6 address of the network inteface"
+	echo "I could not determine the IP or IPv6 address of the network interface"
 	echo "for connecting to the Internet. Setup must stop."
 	echo
 	hostname -I
@@ -197,7 +198,7 @@ fi
 echo
 echo "Primary Hostname: $PRIMARY_HOSTNAME"
 echo "Public IP Address: $PUBLIC_IP"
-if [ ! -z "$PUBLIC_IPV6" ]; then
+if [ -n "$PUBLIC_IPV6" ]; then
 	echo "Public IPv6 Address: $PUBLIC_IPV6"
 fi
 if [ "$PRIVATE_IP" != "$PUBLIC_IP" ]; then
@@ -207,6 +208,6 @@ if [ "$PRIVATE_IPV6" != "$PUBLIC_IPV6" ]; then
 	echo "Private IPv6 Address: $PRIVATE_IPV6"
 fi
 if [ -f /usr/bin/git ] && [ -d .git ]; then
-	echo "Mail-in-a-Box Version: " $(git describe)
+	echo "Mail-in-a-Box Version: $(git describe --always)"
 fi
 echo

setup/spamassassin.sh

@@ -53,7 +53,7 @@ tools/editconf.py /etc/default/spampd \
 
 # Spamassassin normally wraps spam as an attachment inside a fresh
 # email with a report about the message. This also protects the user
-# from accidentally openening a message with embedded malware.
+# from accidentally opening a message with embedded malware.
 #
 # It's nice to see what rules caused the message to be marked as spam,
 # but it's also annoying to get to the original message when it is an
@@ -135,11 +135,11 @@ EOF
 # the filemode in the config file.
 
 tools/editconf.py /etc/spamassassin/local.cf -s \
-	bayes_path=$STORAGE_ROOT/mail/spamassassin/bayes \
+	bayes_path="$STORAGE_ROOT/mail/spamassassin/bayes" \
 	bayes_file_mode=0666
 
-mkdir -p $STORAGE_ROOT/mail/spamassassin
+mkdir -p "$STORAGE_ROOT/mail/spamassassin"
-chown -R spampd:spampd $STORAGE_ROOT/mail/spamassassin
+chown -R spampd:spampd "$STORAGE_ROOT/mail/spamassassin"
 
 # To mark mail as spam or ham, just drag it in or out of the Spam folder. We'll
 # use the Dovecot antispam plugin to detect the message move operation and execute
@@ -184,8 +184,8 @@ chmod a+x /usr/local/bin/sa-learn-pipe.sh
 # Create empty bayes training data (if it doesn't exist). Once the files exist,
 # ensure they are group-writable so that the Dovecot process has access.
 sudo -u spampd /usr/bin/sa-learn --sync 2>/dev/null
-chmod -R 660 $STORAGE_ROOT/mail/spamassassin
+chmod -R 660 "$STORAGE_ROOT/mail/spamassassin"
-chmod 770 $STORAGE_ROOT/mail/spamassassin
+chmod 770 "$STORAGE_ROOT/mail/spamassassin"
 
 # Initial training?
 # sa-learn --ham storage/mail/mailboxes/*/*/cur/

setup/ssl.sh

@@ -26,9 +26,9 @@ source /etc/mailinabox.conf # load global vars
 
 # Show a status line if we are going to take any action in this file.
 if  [ ! -f /usr/bin/openssl ] \
- || [ ! -f $STORAGE_ROOT/ssl/ssl_private_key.pem ] \
+ || [ ! -f "$STORAGE_ROOT/ssl/ssl_private_key.pem" ] \
- || [ ! -f $STORAGE_ROOT/ssl/ssl_certificate.pem ] \
+ || [ ! -f "$STORAGE_ROOT/ssl/ssl_certificate.pem" ] \
- || [ ! -f $STORAGE_ROOT/ssl/dh2048.pem ]; then
+ || [ ! -f "$STORAGE_ROOT/ssl/dh2048.pem" ]; then
 	echo "Creating initial SSL certificate and perfect forward secrecy Diffie-Hellman parameters..."
 fi
 
@@ -38,7 +38,7 @@ apt_install openssl
 
 # Create a directory to store TLS-related things like "SSL" certificates.
 
-mkdir -p $STORAGE_ROOT/ssl
+mkdir -p "$STORAGE_ROOT/ssl"
 
 # Generate a new private key.
 #
@@ -60,39 +60,48 @@ mkdir -p $STORAGE_ROOT/ssl
 #
 # Since we properly seed /dev/urandom in system.sh we should be fine, but I leave
 # in the rest of the notes in case that ever changes.
-if [ ! -f $STORAGE_ROOT/ssl/ssl_private_key.pem ]; then
+if [ ! -f "$STORAGE_ROOT/ssl/ssl_private_key.pem" ]; then
 	# Set the umask so the key file is never world-readable.
 	(umask 077; hide_output \
-		openssl genrsa -out $STORAGE_ROOT/ssl/ssl_private_key.pem 2048)
+		openssl genrsa -out "$STORAGE_ROOT/ssl/ssl_private_key.pem" 2048)
 fi
 
 # Generate a self-signed SSL certificate because things like nginx, dovecot,
 # etc. won't even start without some certificate in place, and we need nginx
 # so we can offer the user a control panel to install a better certificate.
-if [ ! -f $STORAGE_ROOT/ssl/ssl_certificate.pem ]; then
+if [ ! -f "$STORAGE_ROOT/ssl/ssl_certificate.pem" ]; then
 	# Generate a certificate signing request.
 	CSR=/tmp/ssl_cert_sign_req-$$.csr
 	hide_output \
-	openssl req -new -key $STORAGE_ROOT/ssl/ssl_private_key.pem -out $CSR \
+	openssl req -new -key "$STORAGE_ROOT/ssl/ssl_private_key.pem" -out $CSR \
 	  -sha256 -subj "/CN=$PRIMARY_HOSTNAME"
 
 	# Generate the self-signed certificate.
 	CERT=$STORAGE_ROOT/ssl/$PRIMARY_HOSTNAME-selfsigned-$(date --rfc-3339=date | sed s/-//g).pem
 	hide_output \
 	openssl x509 -req -days 365 \
-	  -in $CSR -signkey $STORAGE_ROOT/ssl/ssl_private_key.pem -out $CERT
+	  -in $CSR -signkey "$STORAGE_ROOT/ssl/ssl_private_key.pem" -out "$CERT"
 
 	# Delete the certificate signing request because it has no other purpose.
 	rm -f $CSR
 
 	# Symlink the certificate into the system certificate path, so system services
 	# can find it.
-	ln -s $CERT $STORAGE_ROOT/ssl/ssl_certificate.pem
+	ln -s "$CERT" "$STORAGE_ROOT/ssl/ssl_certificate.pem"
 fi
 
 # Generate some Diffie-Hellman cipher bits.
 # openssl's default bit length for this is 1024 bits, but we'll create
 # 2048 bits of bits per the latest recommendations.
-if [ ! -f $STORAGE_ROOT/ssl/dh2048.pem ]; then
+if [ ! -f "$STORAGE_ROOT/ssl/dh2048.pem" ]; then
-	openssl dhparam -out $STORAGE_ROOT/ssl/dh2048.pem 2048
+	openssl dhparam -out "$STORAGE_ROOT/ssl/dh2048.pem" 2048
 fi
+
+# Cleanup expired SSL certificates from $STORAGE_ROOT/ssl daily
+cat > /etc/cron.daily/mailinabox-ssl-cleanup << EOF;
+#!/bin/bash
+# Mail-in-a-Box
+# Cleanup expired SSL certificates
+$(pwd)/tools/ssl_cleanup
+EOF
+chmod +x /etc/cron.daily/mailinabox-ssl-cleanup

setup/start.sh

@@ -46,7 +46,7 @@ fi
 # in the first dialog prompt, so we should do this before that starts.
 cat > /usr/local/bin/mailinabox << EOF;
 #!/bin/bash
-cd $(pwd)
+cd $PWD
 source setup/start.sh
 EOF
 chmod +x /usr/local/bin/mailinabox
@@ -67,19 +67,25 @@ fi
 fi
 
 # Create the STORAGE_USER and STORAGE_ROOT directory if they don't already exist.
+#
+# Set the directory and all of its parent directories' permissions to world
+# readable since it holds files owned by different processes.
+#
 # If the STORAGE_ROOT is missing the mailinabox.version file that lists a
 # migration (schema) number for the files stored there, assume this is a fresh
 # installation to that directory and write the file to contain the current
 # migration number for this version of Mail-in-a-Box.
-if ! id -u $STORAGE_USER >/dev/null 2>&1; then
+if ! id -u "$STORAGE_USER" >/dev/null 2>&1; then
-	useradd -m $STORAGE_USER
+	useradd -m "$STORAGE_USER"
 fi
-if [ ! -d $STORAGE_ROOT ]; then
+if [ ! -d "$STORAGE_ROOT" ]; then
-	mkdir -p $STORAGE_ROOT
+	mkdir -p "$STORAGE_ROOT"
 fi
-if [ ! -f $STORAGE_ROOT/mailinabox.version ]; then
+f=$STORAGE_ROOT
-	setup/migrate.py --current > $STORAGE_ROOT/mailinabox.version
+while [[ $f != / ]]; do chmod a+rx "$f"; f=$(dirname "$f"); done;
-	chown $STORAGE_USER.$STORAGE_USER $STORAGE_ROOT/mailinabox.version
+if [ ! -f "$STORAGE_ROOT/mailinabox.version" ]; then
+	setup/migrate.py --current > "$STORAGE_ROOT/mailinabox.version"
+	chown "$STORAGE_USER:$STORAGE_USER" "$STORAGE_ROOT/mailinabox.version"
 fi
 
 # Save the global options in /etc/mailinabox.conf so that standalone
@@ -116,7 +122,7 @@ source setup/munin.sh
 # Wait for the management daemon to start...
 until nc -z -w 4 127.0.0.1 10222
 do
-	echo Waiting for the Mail-in-a-Box management daemon to start...
+	echo "Waiting for the Mail-in-a-Box management daemon to start..."
 	sleep 2
 done
 
@@ -136,41 +142,41 @@ source setup/firstuser.sh
 # We'd let certbot ask the user interactively, but when this script is
 # run in the recommended curl-pipe-to-bash method there is no TTY and
 # certbot will fail if it tries to ask.
-if [ ! -d $STORAGE_ROOT/ssl/lets_encrypt/accounts/acme-v02.api.letsencrypt.org/ ]; then
+if [ ! -d "$STORAGE_ROOT/ssl/lets_encrypt/accounts/acme-v02.api.letsencrypt.org/" ]; then
 echo
 echo "-----------------------------------------------"
 echo "Mail-in-a-Box uses Let's Encrypt to provision free SSL/TLS certificates"
 echo "to enable HTTPS connections to your box. We're automatically"
 echo "agreeing you to their subscriber agreement. See https://letsencrypt.org."
 echo
-certbot register --register-unsafely-without-email --agree-tos --config-dir $STORAGE_ROOT/ssl/lets_encrypt
+certbot register --register-unsafely-without-email --agree-tos --config-dir "$STORAGE_ROOT/ssl/lets_encrypt"
 fi
 
 # Done.
 echo
 echo "-----------------------------------------------"
 echo
-echo Your Mail-in-a-Box is running.
+echo "Your Mail-in-a-Box is running."
 echo
-echo Please log in to the control panel for further instructions at:
+echo "Please log in to the control panel for further instructions at:"
 echo
 if management/status_checks.py --check-primary-hostname; then
 	# Show the nice URL if it appears to be resolving and has a valid certificate.
-	echo https://$PRIMARY_HOSTNAME/admin
+	echo "https://$PRIMARY_HOSTNAME/admin"
 	echo
 	echo "If you have a DNS problem put the box's IP address in the URL"
 	echo "(https://$PUBLIC_IP/admin) but then check the TLS fingerprint:"
-	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint -sha256\
+	openssl x509 -in "$STORAGE_ROOT/ssl/ssl_certificate.pem" -noout -fingerprint -sha256\
-        	| sed "s/SHA256 Fingerprint=//"
+        	| sed "s/SHA256 Fingerprint=//i"
 else
-	echo https://$PUBLIC_IP/admin
+	echo "https://$PUBLIC_IP/admin"
 	echo
-	echo You will be alerted that the website has an invalid certificate. Check that
+	echo "You will be alerted that the website has an invalid certificate. Check that"
-	echo the certificate fingerprint matches:
+	echo "the certificate fingerprint matches:"
 	echo
-	openssl x509 -in $STORAGE_ROOT/ssl/ssl_certificate.pem -noout -fingerprint -sha256\
+	openssl x509 -in "$STORAGE_ROOT/ssl/ssl_certificate.pem" -noout -fingerprint -sha256\
-        	| sed "s/SHA256 Fingerprint=//"
+        	| sed "s/SHA256 Fingerprint=//i"
 	echo
-	echo Then you can confirm the security exception and continue.
+	echo "Then you can confirm the security exception and continue."
 	echo
 fi

setup/system.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 source /etc/mailinabox.conf
 source setup/functions.sh # load our functions
 
@@ -11,8 +12,8 @@ source setup/functions.sh # load our functions
 #
 # First set the hostname in the configuration file, then activate the setting
 
-echo $PRIMARY_HOSTNAME > /etc/hostname
+echo "$PRIMARY_HOSTNAME" > /etc/hostname
-hostname $PRIMARY_HOSTNAME
+hostname "$PRIMARY_HOSTNAME"
 
 # ### Fix permissions
 
@@ -36,7 +37,7 @@ chmod g-w /etc /etc/default /usr
 # - Check if the user intents to activate swap on next boot by checking fstab entries.
 # - Check if a swapfile already exists
 # - Check if the root file system is not btrfs, might be an incompatible version with
-#   swapfiles. User should hanle it them selves.
+#   swapfiles. User should handle it them selves.
 # - Check the memory requirements
 # - Check available diskspace
 
@@ -53,14 +54,14 @@ if
 	[ -z "$SWAP_IN_FSTAB" ] &&
 	[ ! -e /swapfile ] &&
 	[ -z "$ROOT_IS_BTRFS" ] &&
-	[ $TOTAL_PHYSICAL_MEM -lt 1900000 ] &&
+	[ "$TOTAL_PHYSICAL_MEM" -lt 1900000 ] &&
-	[ $AVAILABLE_DISK_SPACE -gt 5242880 ]
+	[ "$AVAILABLE_DISK_SPACE" -gt 5242880 ]
 then
 	echo "Adding a swap file to the system..."
 
-	# Allocate and activate the swap file. Allocate in 1KB chuncks
+	# Allocate and activate the swap file. Allocate in 1KB chunks
 	# doing it in one go, could fail on low memory systems
-	dd if=/dev/zero of=/swapfile bs=1024 count=$[1024*1024] status=none
+	dd if=/dev/zero of=/swapfile bs=1024 count=$((1024*1024)) status=none
 	if [ -e /swapfile ]; then
 		chmod 600 /swapfile
 		hide_output mkswap /swapfile
@@ -75,6 +76,22 @@ then
 	fi
 fi
 
+# ### Set log retention policy.
+
+# Set the systemd journal log retention from infinite to 10 days,
+# since over time the logs take up a large amount of space.
+# (See https://discourse.mailinabox.email/t/journalctl-reclaim-space-on-small-mailinabox/6728/11.)
+tools/editconf.py /etc/systemd/journald.conf MaxRetentionSec=10day
+
+# ### Improve server privacy
+
+# Disable MOTD adverts to prevent revealing server information in MOTD request headers
+# See https://ma.ttias.be/what-exactly-being-sent-ubuntu-motd/
+if [ -f /etc/default/motd-news ]; then
+tools/editconf.py /etc/default/motd-news ENABLED=0
+rm -f /var/cache/motd-news
+fi
+
 # ### Add PPAs.
 
 # We install some non-standard Ubuntu packages maintained by other
@@ -90,20 +107,22 @@ fi
 # come from there and minimal Ubuntu installs may have it turned off.
 hide_output add-apt-repository -y universe
 
-# Install the certbot PPA.
-hide_output add-apt-repository -y ppa:certbot/certbot
-
 # Install the duplicity PPA.
 hide_output add-apt-repository -y ppa:duplicity-team/duplicity-release-git
 
+# Stock PHP is now 8.1, but we're transitioning through 8.0 because
+# of Nextcloud.
+hide_output add-apt-repository --y ppa:ondrej/php
+
 # ### Update Packages
 
 # Update system packages to make sure we have the latest upstream versions
 # of things from Ubuntu, as well as the directory of packages provide by the
 # PPAs so we can install those packages later.
+# --allow-releaseinfo-change is added because ppa:ondrej/php changed its Label.
 
-echo Updating system packages...
+echo "Updating system packages..."
-hide_output apt-get update
+hide_output apt-get update --allow-releaseinfo-change
 apt_get_quiet upgrade
 
 # Old kernels pile up over time and take up a lot of disk space, and because of Mail-in-a-Box
@@ -116,9 +135,6 @@ apt_get_quiet autoremove
 
 # Install basic utilities.
 #
-# * haveged: Provides extra entropy to /dev/random so it doesn't stall
-#	         when generating random numbers for private keys (e.g. during
-#	         ldns-keygen).
 # * unattended-upgrades: Apt tool to install security updates automatically.
 # * cron: Runs background processes periodically.
 # * ntp: keeps the system time correct
@@ -130,10 +146,10 @@ apt_get_quiet autoremove
 # * bc: allows us to do math to compute sane defaults
 # * openssh-client: provides ssh-keygen
 
-echo Installing system packages...
+echo "Installing system packages..."
 apt_install python3 python3-dev python3-pip python3-setuptools \
-	netcat-openbsd wget curl git sudo coreutils bc \
+	netcat-openbsd wget curl git sudo coreutils bc file \
-	haveged pollinate openssh-client unzip \
+	pollinate openssh-client unzip \
 	unattended-upgrades cron ntp fail2ban rsyslog
 
 # ### Suppress Upgrade Prompts
@@ -159,7 +175,7 @@ fi
 # not likely the user will want to change this, so we only ask on first
 # setup.
 if [ -z "${NONINTERACTIVE:-}" ]; then
-	if [ ! -f /etc/timezone ] || [ ! -z ${FIRST_TIME_SETUP:-} ]; then
+	if [ ! -f /etc/timezone ] || [ -n "${FIRST_TIME_SETUP:-}" ]; then
 		# If the file is missing or this is the user's first time running
 		# Mail-in-a-Box setup, run the interactive timezone configuration
 		# tool.
@@ -212,7 +228,7 @@ fi
 # issue any warnings if no entropy is actually available. (http://www.2uo.de/myths-about-urandom/)
 # Entropy might not be readily available because this machine has no user input
 # devices (common on servers!) and either no hard disk or not enough IO has
-# ocurred yet --- although haveged tries to mitigate this. So there's a good chance
+# occurred yet --- although haveged tries to mitigate this. So there's a good chance
 # that accessing /dev/urandom will not be drawing from any hardware entropy and under
 # a perfect-storm circumstance where the other seeds are meaningless, /dev/urandom
 # may not be seeded at all.
@@ -221,7 +237,7 @@ fi
 # hardware entropy to get going, by drawing from /dev/random. haveged makes this
 # less likely to stall for very long.
 
-echo Initializing system random number generator...
+echo "Initializing system random number generator..."
 dd if=/dev/random of=/dev/urandom bs=1 count=32 2> /dev/null
 
 # This is supposedly sufficient. But because we're not sure if hardware entropy
@@ -264,14 +280,14 @@ if [ -z "${DISABLE_FIREWALL:-}" ]; then
 	# ssh might be running on an alternate port. Use sshd -T to dump sshd's #NODOC
 	# settings, find the port it is supposedly running on, and open that port #NODOC
 	# too. #NODOC
-	SSH_PORT=$(sshd -T 2>/dev/null | grep "^port " | sed "s/port //") #NODOC
+	SSH_PORT=$(sshd -T 2>/dev/null | grep "^port " | sed "s/port //" | tr '\n' ' ') #NODOC
-	if [ ! -z "$SSH_PORT" ]; then
+	if [ -n "$SSH_PORT" ]; then
-	if [ "$SSH_PORT" != "22" ]; then
+	    for port in $SSH_PORT; do
-
+	        if [ "$port" != "22" ]; then
-	echo Opening alternate SSH port $SSH_PORT. #NODOC
+	            echo "Opening alternate SSH port $port." #NODOC
-	ufw_limit $SSH_PORT #NODOC
+                ufw_limit "$port" #NODOC
-
+            fi
-	fi
+        done
 	fi
 
 	ufw --force enable;
@@ -324,7 +340,7 @@ fi #NODOC
 #  	If more queries than specified are sent, bind9 returns SERVFAIL. After flushing the cache during system checks,
 #	we ran into the limit thus we are increasing it from 75 (default value) to 100.
 apt_install bind9
-tools/editconf.py /etc/default/bind9 \
+tools/editconf.py /etc/default/named \
 	"OPTIONS=\"-u bind -4\""
 if ! grep -q "listen-on " /etc/bind/named.conf.options; then
 	# Add a listen-on directive if it doesn't exist inside the options block.
@@ -356,6 +372,7 @@ systemctl restart systemd-resolved
 rm -f /etc/fail2ban/jail.local # we used to use this file but don't anymore
 rm -f /etc/fail2ban/jail.d/defaults-debian.conf # removes default config so we can manage all of fail2ban rules in one config
 cat conf/fail2ban/jails.conf \
+    | sed "s/PUBLIC_IPV6/$PUBLIC_IPV6/g" \
 	| sed "s/PUBLIC_IP/$PUBLIC_IP/g" \
 	| sed "s#STORAGE_ROOT#$STORAGE_ROOT#" \
 	> /etc/fail2ban/jail.d/mailinabox.conf
@@ -367,3 +384,5 @@ cp -f conf/fail2ban/filter.d/* /etc/fail2ban/filter.d/
 # scripts will ensure the files exist and then fail2ban is given another
 # restart at the very end of setup.
 restart_service fail2ban
+
+systemctl enable fail2ban

setup/web.sh

@@ -6,9 +6,9 @@ source setup/functions.sh # load our functions
 source /etc/mailinabox.conf # load global vars
 
 # Some Ubuntu images start off with Apache. Remove it since we
-# will use nginx. Use autoremove to remove any Apache depenencies.
+# will use nginx. Use autoremove to remove any Apache dependencies.
 if [ -f /usr/sbin/apache2 ]; then
-	echo Removing apache...
+	echo "Removing apache..."
 	hide_output apt-get -y purge apache2 apache2-*
 	hide_output apt-get -y --purge autoremove
 fi
@@ -19,7 +19,7 @@ fi
 
 echo "Installing Nginx (web server)..."
 
-apt_install nginx php-cli php-fpm idn2
+apt_install nginx php"${PHP_VER}"-cli php"${PHP_VER}"-fpm idn2
 
 rm -f /etc/nginx/sites-enabled/default
 
@@ -46,15 +46,15 @@ tools/editconf.py /etc/nginx/nginx.conf -s \
 	ssl_protocols="TLSv1.2 TLSv1.3;"
 
 # Tell PHP not to expose its version number in the X-Powered-By header.
-tools/editconf.py /etc/php/7.2/fpm/php.ini -c ';' \
+tools/editconf.py /etc/php/"$PHP_VER"/fpm/php.ini -c ';' \
 	expose_php=Off
 
 # Set PHPs default charset to UTF-8, since we use it. See #367.
-tools/editconf.py /etc/php/7.2/fpm/php.ini -c ';' \
+tools/editconf.py /etc/php/"$PHP_VER"/fpm/php.ini -c ';' \
         default_charset="UTF-8"
 
 # Configure the path environment for php-fpm
-tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
+tools/editconf.py /etc/php/"$PHP_VER"/fpm/pool.d/www.conf -c ';' \
 	env[PATH]=/usr/local/bin:/usr/bin:/bin \
 
 # Configure php-fpm based on the amount of memory the machine has
@@ -62,32 +62,32 @@ tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
 # Some synchronisation issues can occur when many people access the site at once.
 # The pm=ondemand setting is used for memory constrained machines < 2GB, this is copied over from PR: 1216
 TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}' || /bin/true)
-if [ $TOTAL_PHYSICAL_MEM -lt 1000000 ]
+if [ "$TOTAL_PHYSICAL_MEM" -lt 1000000 ]
 then
-        tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
+        tools/editconf.py /etc/php/"$PHP_VER"/fpm/pool.d/www.conf -c ';' \
                 pm=ondemand \
                 pm.max_children=8 \
                 pm.start_servers=2 \
                 pm.min_spare_servers=1 \
                 pm.max_spare_servers=3
-elif [ $TOTAL_PHYSICAL_MEM -lt 2000000 ]
+elif [ "$TOTAL_PHYSICAL_MEM" -lt 2000000 ]
 then
-        tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
+        tools/editconf.py /etc/php/"$PHP_VER"/fpm/pool.d/www.conf -c ';' \
                 pm=ondemand \
                 pm.max_children=16 \
                 pm.start_servers=4 \
                 pm.min_spare_servers=1 \
                 pm.max_spare_servers=6
-elif [ $TOTAL_PHYSICAL_MEM -lt 3000000 ]
+elif [ "$TOTAL_PHYSICAL_MEM" -lt 3000000 ]
 then
-        tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
+        tools/editconf.py /etc/php/"$PHP_VER"/fpm/pool.d/www.conf -c ';' \
                 pm=dynamic \
                 pm.max_children=60 \
                 pm.start_servers=6 \
                 pm.min_spare_servers=3 \
                 pm.max_spare_servers=9
 else
-        tools/editconf.py /etc/php/7.2/fpm/pool.d/www.conf -c ';' \
+        tools/editconf.py /etc/php/"$PHP_VER"/fpm/pool.d/www.conf -c ';' \
                 pm=dynamic \
                 pm.max_children=120 \
                 pm.start_servers=12 \
@@ -124,7 +124,7 @@ chmod a+r /var/lib/mailinabox/mozilla-autoconfig.xml
 
 # Create a generic mta-sts.txt file which is exposed via the
 # nginx configuration at /.well-known/mta-sts.txt
-# more documentation is available on: 
+# more documentation is available on:
 # https://www.uriports.com/blog/mta-sts-explained/
 # default mode is "enforce". In /etc/mailinabox.conf change
 # "MTA_STS_MODE=testing" which means "Messages will be delivered
@@ -138,16 +138,16 @@ cat conf/mta-sts.txt \
 chmod a+r /var/lib/mailinabox/mta-sts.txt
 
 # make a default homepage
-if [ -d $STORAGE_ROOT/www/static ]; then mv $STORAGE_ROOT/www/static $STORAGE_ROOT/www/default; fi # migration #NODOC
+if [ -d "$STORAGE_ROOT/www/static" ]; then mv "$STORAGE_ROOT/www/static" "$STORAGE_ROOT/www/default"; fi # migration #NODOC
-mkdir -p $STORAGE_ROOT/www/default
+mkdir -p "$STORAGE_ROOT/www/default"
-if [ ! -f $STORAGE_ROOT/www/default/index.html ]; then
+if [ ! -f "$STORAGE_ROOT/www/default/index.html" ]; then
-	cp conf/www_default.html $STORAGE_ROOT/www/default/index.html
+	cp conf/www_default.html "$STORAGE_ROOT/www/default/index.html"
 fi
-chown -R $STORAGE_USER $STORAGE_ROOT/www
+chown -R "$STORAGE_USER" "$STORAGE_ROOT/www"
 
 # Start services.
 restart_service nginx
-restart_service php7.2-fpm
+restart_service php"$PHP_VER"-fpm
 
 # Open ports.
 ufw_allow http

setup/webmail.sh

@@ -22,19 +22,26 @@ source /etc/mailinabox.conf # load global vars
 echo "Installing Roundcube (webmail)..."
 apt_install \
 	dbconfig-common \
-	php-cli php-sqlite3 php-intl php-json php-common php-curl php-ldap \
+	php"${PHP_VER}"-cli php"${PHP_VER}"-sqlite3 php"${PHP_VER}"-intl php"${PHP_VER}"-common php"${PHP_VER}"-curl php"${PHP_VER}"-imap \
-	php-gd php-pspell tinymce libjs-jquery libjs-jquery-mousewheel libmagic1 php-mbstring
+	php"${PHP_VER}"-gd php"${PHP_VER}"-pspell php"${PHP_VER}"-mbstring php"${PHP_VER}"-xml libjs-jquery libjs-jquery-mousewheel libmagic1 \
+	sqlite3
 
 # Install Roundcube from source if it is not already present or if it is out of date.
 # Combine the Roundcube version number with the commit hash of plugins to track
 # whether we have the latest version of everything.
-
+# For the latest versions, see:
-VERSION=1.4.11
+#   https://github.com/roundcube/roundcubemail/releases
-HASH=3877f0e70f29e7d0612155632e48c3db1e626be3
+#   https://github.com/mfreiholz/persistent_login/commits/master
-PERSISTENT_LOGIN_VERSION=6b3fc450cae23ccb2f393d0ef67aa319e877e435 # version 5.2.0
+#   https://github.com/stremlau/html5_notifier/commits/master
+#   https://github.com/mstilkerich/rcmcarddav/releases
+# The easiest way to get the package hashes is to run this script and get the hash from
+# the error message.
+VERSION=1.6.11
+HASH=d72da06b5f65142dab8b574f7676e0220541a3d4
+PERSISTENT_LOGIN_VERSION=bde7b6840c7d91de627ea14e81cf4133cbb3c07a # version 5.3
 HTML5_NOTIFIER_VERSION=68d9ca194212e15b3c7225eb6085dbcf02fd13d7 # version 0.6.4+
-CARDDAV_VERSION=3.0.3
+CARDDAV_VERSION=4.4.3
-CARDDAV_HASH=d1e3b0d851ffa2c6bd42bf0c04f70d0e1d0d78f8
+CARDDAV_HASH=74f8ba7aee33e78beb9de07f7f44b81f6071b644
 
 UPDATE_KEY=$VERSION:$PERSISTENT_LOGIN_VERSION:$HTML5_NOTIFIER_VERSION:$CARDDAV_VERSION
 
@@ -77,13 +84,13 @@ if [ $needs_update == 1 ]; then
 
 	# download and verify the full release of the carddav plugin
 	wget_verify \
-		https://github.com/blind-coder/rcmcarddav/releases/download/v${CARDDAV_VERSION}/carddav-${CARDDAV_VERSION}.zip \
+		https://github.com/mstilkerich/rcmcarddav/releases/download/v${CARDDAV_VERSION}/carddav-v${CARDDAV_VERSION}.tar.gz \
 		$CARDDAV_HASH \
-		/tmp/carddav.zip
+		/tmp/carddav.tar.gz
 
 	# unzip and cleanup
-	unzip -q /tmp/carddav.zip -d ${RCM_PLUGIN_DIR}
+	tar -C ${RCM_PLUGIN_DIR} -zxf /tmp/carddav.tar.gz
-	rm -f /tmp/carddav.zip
+	rm -f /tmp/carddav.tar.gz
 
 	# record the version we've installed
 	echo $UPDATE_KEY > ${RCM_DIR}/version
@@ -109,8 +116,7 @@ cat > $RCM_CONFIG <<EOF;
 \$config['log_dir'] = '/var/log/roundcubemail/';
 \$config['temp_dir'] = '/var/tmp/roundcubemail/';
 \$config['db_dsnw'] = 'sqlite:///$STORAGE_ROOT/mail/roundcube/roundcube.sqlite?mode=0640';
-\$config['default_host'] = 'ssl://localhost';
+\$config['imap_host'] = 'ssl://localhost:993';
-\$config['default_port'] = 993;
 \$config['imap_conn_options'] = array(
   'ssl'         => array(
      'verify_peer'  => false,
@@ -118,7 +124,7 @@ cat > $RCM_CONFIG <<EOF;
    ),
  );
 \$config['imap_timeout'] = 15;
-\$config['smtp_server'] = 'tls://127.0.0.1';
+\$config['smtp_host'] = 'tls://127.0.0.1';
 \$config['smtp_conn_options'] = array(
   'ssl'         => array(
      'verify_peer'  => false,
@@ -132,8 +138,14 @@ cat > $RCM_CONFIG <<EOF;
 \$config['plugins'] = array('html5_notifier', 'archive', 'zipdownload', 'password', 'managesieve', 'jqueryui', 'persistent_login', 'carddav');
 \$config['skin'] = 'elastic';
 \$config['login_autocomplete'] = 2;
+\$config['login_username_filter'] = 'email';
 \$config['password_charset'] = 'UTF-8';
 \$config['junk_mbox'] = 'Spam';
+/* ensure roudcube session id's aren't leaked to other parts of the server */
+\$config['session_path'] = '/mail/';
+/* prevent CSRF, requires php 7.3+ */
+\$config['session_samesite'] = 'Strict';
+\$config['quota_zero_as_unlimited'] = true;
 ?>
 EOF
 
@@ -147,7 +159,7 @@ cat > ${RCM_PLUGIN_DIR}/carddav/config.inc.php <<EOF;
 	 'name'         =>  'ownCloud',
 	 'username'     =>  '%u', // login username
 	 'password'     =>  '%p', // login password
-	 'url'          =>  'https://${PRIMARY_HOSTNAME}/cloud/remote.php/carddav/addressbooks/%u/contacts',
+	 'url'          =>  'https://${PRIMARY_HOSTNAME}/cloud/remote.php/dav/addressbooks/users/%u/contacts/',
 	 'active'       =>  true,
 	 'readonly'     =>  false,
 	 'refresh_time' => '02:00:00',
@@ -159,8 +171,8 @@ cat > ${RCM_PLUGIN_DIR}/carddav/config.inc.php <<EOF;
 EOF
 
 # Create writable directories.
-mkdir -p /var/log/roundcubemail /var/tmp/roundcubemail $STORAGE_ROOT/mail/roundcube
+mkdir -p /var/log/roundcubemail /var/tmp/roundcubemail "$STORAGE_ROOT/mail/roundcube"
-chown -R www-data.www-data /var/log/roundcubemail /var/tmp/roundcubemail $STORAGE_ROOT/mail/roundcube
+chown -R www-data:www-data /var/log/roundcubemail /var/tmp/roundcubemail "$STORAGE_ROOT/mail/roundcube"
 
 # Ensure the log file monitored by fail2ban exists, or else fail2ban can't start.
 sudo -u www-data touch /var/log/roundcubemail/errors.log
@@ -174,31 +186,40 @@ cp ${RCM_PLUGIN_DIR}/password/config.inc.php.dist \
 tools/editconf.py ${RCM_PLUGIN_DIR}/password/config.inc.php \
 	"\$config['password_minimum_length']=8;" \
 	"\$config['password_db_dsn']='sqlite:///$STORAGE_ROOT/mail/users.sqlite';" \
-	"\$config['password_query']='UPDATE users SET password=%D WHERE email=%u';" \
+	"\$config['password_query']='UPDATE users SET password=%P WHERE email=%u';" \
-	"\$config['password_dovecotpw']='/usr/bin/doveadm pw';" \
+	"\$config['password_algorithm']='sha512-crypt';" \
-	"\$config['password_dovecotpw_method']='SHA512-CRYPT';" \
+	"\$config['password_algorithm_prefix']='{SHA512-CRYPT}';"
-	"\$config['password_dovecotpw_with_method']=true;"
 
 # so PHP can use doveadm, for the password changing plugin
 usermod -a -G dovecot www-data
 
 # set permissions so that PHP can use users.sqlite
 # could use dovecot instead of www-data, but not sure it matters
-chown root.www-data $STORAGE_ROOT/mail
+chown root:www-data "$STORAGE_ROOT/mail"
-chmod 775 $STORAGE_ROOT/mail
+chmod 775 "$STORAGE_ROOT/mail"
-chown root.www-data $STORAGE_ROOT/mail/users.sqlite
+chown root:www-data "$STORAGE_ROOT/mail/users.sqlite"
-chmod 664 $STORAGE_ROOT/mail/users.sqlite
+chmod 664 "$STORAGE_ROOT/mail/users.sqlite"
 
 # Fix Carddav permissions:
-chown -f -R root.www-data ${RCM_PLUGIN_DIR}/carddav
+chown -f -R root:www-data ${RCM_PLUGIN_DIR}/carddav
-# root.www-data need all permissions, others only read
+# root:www-data need all permissions, others only read
 chmod -R 774 ${RCM_PLUGIN_DIR}/carddav
 
 # Run Roundcube database migration script (database is created if it does not exist)
-${RCM_DIR}/bin/updatedb.sh --dir ${RCM_DIR}/SQL --package roundcube
+php"$PHP_VER" ${RCM_DIR}/bin/updatedb.sh --dir ${RCM_DIR}/SQL --package roundcube
-chown www-data:www-data $STORAGE_ROOT/mail/roundcube/roundcube.sqlite
+chown www-data:www-data "$STORAGE_ROOT/mail/roundcube/roundcube.sqlite"
-chmod 664 $STORAGE_ROOT/mail/roundcube/roundcube.sqlite
+chmod 664 "$STORAGE_ROOT/mail/roundcube/roundcube.sqlite"
+
+# Patch the Roundcube code to eliminate an issue that causes postfix to reject our sqlite
+# user database (see https://github.com/mail-in-a-box/mailinabox/issues/2185)
+sed -i.miabold 's/^[^#]\+.\+PRAGMA journal_mode = WAL.\+$/#&/' \
+/usr/local/lib/roundcubemail/program/lib/Roundcube/db/sqlite.php
+
+# Because Roundcube wants to set the PRAGMA we just deleted from the source, we apply it here
+# to the roundcube database (see https://github.com/roundcube/roundcubemail/issues/8035)
+# Database should exist, created by migration script
+hide_output sqlite3 "$STORAGE_ROOT/mail/roundcube/roundcube.sqlite" 'PRAGMA journal_mode=WAL;'
 
 # Enable PHP modules.
-phpenmod -v php mcrypt imap
+phpenmod -v "$PHP_VER" imap
-restart_service php7.2-fpm
+restart_service php"$PHP_VER"-fpm

setup/zpush.sh

@@ -17,13 +17,13 @@ source /etc/mailinabox.conf # load global vars
 
 echo "Installing Z-Push (Exchange/ActiveSync server)..."
 apt_install \
-	php-soap php-imap libawl-php php-xsl
+       php"${PHP_VER}"-soap php"${PHP_VER}"-imap libawl-php php"$PHP_VER"-xml php"${PHP_VER}"-intl
 
-phpenmod -v php imap
+phpenmod -v "$PHP_VER" imap
 
 # Copy Z-Push into place.
-VERSION=2.6.2
+VERSION=2.7.5
-TARGETHASH=f0e8091a8030e5b851f5ba1f9f0e1a05b8762d80
+TARGETHASH=f0b0b06e255f3496173ab9d28a4f2d985184720e
 needs_update=0 #NODOC
 if [ ! -f /usr/local/lib/z-push/version ]; then
 	needs_update=1 #NODOC
@@ -41,9 +41,15 @@ if [ $needs_update == 1 ]; then
 	mv /tmp/z-push/*/src /usr/local/lib/z-push
 	rm -rf /tmp/z-push.zip /tmp/z-push
 
+	# Create admin and top scripts with PHP_VER  
 	rm -f /usr/sbin/z-push-{admin,top}
-	ln -s /usr/local/lib/z-push/z-push-admin.php /usr/sbin/z-push-admin
+    echo '#!/bin/bash' > /usr/sbin/z-push-admin
-	ln -s /usr/local/lib/z-push/z-push-top.php /usr/sbin/z-push-top
+    echo php"$PHP_VER" /usr/local/lib/z-push/z-push-admin.php '"$@"' >> /usr/sbin/z-push-admin
+    chmod 755 /usr/sbin/z-push-admin
+    echo '#!/bin/bash' > /usr/sbin/z-push-top
+    echo php"$PHP_VER" /usr/local/lib/z-push/z-push-top.php '"$@"' >> /usr/sbin/z-push-top
+    chmod 755 /usr/sbin/z-push-top
+	
 	echo $VERSION > /usr/local/lib/z-push/version
 fi
 
@@ -51,8 +57,6 @@ fi
 sed -i "s^define('TIMEZONE', .*^define('TIMEZONE', '$(cat /etc/timezone)');^" /usr/local/lib/z-push/config.php
 sed -i "s/define('BACKEND_PROVIDER', .*/define('BACKEND_PROVIDER', 'BackendCombined');/" /usr/local/lib/z-push/config.php
 sed -i "s/define('USE_FULLEMAIL_FOR_LOGIN', .*/define('USE_FULLEMAIL_FOR_LOGIN', true);/" /usr/local/lib/z-push/config.php
-sed -i "s/define('LOG_MEMORY_PROFILER', .*/define('LOG_MEMORY_PROFILER', false);/" /usr/local/lib/z-push/config.php
-sed -i "s/define('BUG68532FIXED', .*/define('BUG68532FIXED', false);/" /usr/local/lib/z-push/config.php
 sed -i "s/define('LOGLEVEL', .*/define('LOGLEVEL', LOGLEVEL_ERROR);/" /usr/local/lib/z-push/config.php
 
 # Configure BACKEND
@@ -102,8 +106,10 @@ EOF
 
 # Restart service.
 
-restart_service php7.2-fpm
+restart_service php"$PHP_VER"-fpm
 
 # Fix states after upgrade
 
-hide_output z-push-admin -a fixstates
+if [ $needs_update == 1 ]; then
+	hide_output php"$PHP_VER" /usr/local/lib/z-push/z-push-admin.php -a fixstates
+fi

tests/fail2ban.py

@@ -6,12 +6,12 @@
 # try to log in to.
 ######################################################################
 
-import sys, os, time, functools
+import sys, os, time
 
 # parse command line
 
 if len(sys.argv) != 4:
-	print("Usage: tests/fail2ban.py \"ssh user@hostname\" hostname owncloud_user")
+	print('Usage: tests/fail2ban.py "ssh user@hostname" hostname owncloud_user')
 	sys.exit(1)
 
 ssh_command, hostname, owncloud_user = sys.argv[1:4]
@@ -24,7 +24,6 @@ socket.setdefaulttimeout(10)
 class IsBlocked(Exception):
 	"""Tests raise this exception when it appears that a fail2ban
 	jail is in effect, i.e. on a connection refused error."""
-	pass
 
 def smtp_test():
 	import smtplib
@@ -33,13 +32,14 @@ def smtp_test():
 		server = smtplib.SMTP(hostname, 587)
 	except ConnectionRefusedError:
 		# looks like fail2ban worked
-		raise IsBlocked()
+		raise IsBlocked
 	server.starttls()
 	server.ehlo_or_helo_if_needed()
 
 	try:
 		server.login("fakeuser", "fakepassword")
-		raise Exception("authentication didn't fail")
+		msg = "authentication didn't fail"
+		raise Exception(msg)
 	except smtplib.SMTPAuthenticationError:
 		# athentication should fail
 		pass
@@ -57,11 +57,12 @@ def imap_test():
 		M = imaplib.IMAP4_SSL(hostname)
 	except ConnectionRefusedError:
 		# looks like fail2ban worked
-		raise IsBlocked()
+		raise IsBlocked
 
 	try:
 		M.login("fakeuser", "fakepassword")
-		raise Exception("authentication didn't fail")
+		msg = "authentication didn't fail"
+		raise Exception(msg)
 	except imaplib.IMAP4.error:
 		# authentication should fail
 		pass
@@ -75,17 +76,18 @@ def pop_test():
 		M = poplib.POP3_SSL(hostname)
 	except ConnectionRefusedError:
 		# looks like fail2ban worked
-		raise IsBlocked()
+		raise IsBlocked
 	try:
 		M.user('fakeuser')
 		try:
 			M.pass_('fakepassword')
-		except poplib.error_proto as e:
+		except poplib.error_proto:
 			# Authentication should fail.
 			M = None # don't .quit()
 			return
 		M.list()
-		raise Exception("authentication didn't fail")
+		msg = "authentication didn't fail"
+		raise Exception(msg)
 	finally:
 		if M:
 			M.quit()
@@ -99,11 +101,12 @@ def managesieve_test():
 		M = imaplib.IMAP4(hostname, 4190)
 	except ConnectionRefusedError:
 		# looks like fail2ban worked
-		raise IsBlocked()
+		raise IsBlocked
 
 	try:
 		M.login("fakeuser", "fakepassword")
-		raise Exception("authentication didn't fail")
+		msg = "authentication didn't fail"
+		raise Exception(msg)
 	except imaplib.IMAP4.error:
 		# authentication should fail
 		pass
@@ -129,17 +132,18 @@ def http_test(url, expected_status, postdata=None, qsargs=None, auth=None):
 			headers={'User-Agent': 'Mail-in-a-Box fail2ban tester'},
 			timeout=8,
 			verify=False) # don't bother with HTTPS validation, it may not be configured yet
-	except requests.exceptions.ConnectTimeout as e:
+	except requests.exceptions.ConnectTimeout:
-		raise IsBlocked()
+		raise IsBlocked
 	except requests.exceptions.ConnectionError as e:
 		if "Connection refused" in str(e):
-			raise IsBlocked()
+			raise IsBlocked
 		raise # some other unexpected condition
 
 	# return response status code
 	if r.status_code != expected_status:
 		r.raise_for_status() # anything but 200
-		raise IOError("Got unexpected status code %s." % r.status_code)
+		msg = f"Got unexpected status code {r.status_code}."
+		raise OSError(msg)
 
 # define how to run a test
 
@@ -149,7 +153,7 @@ def restart_fail2ban_service(final=False):
 	if not final:
 		# Stop recidive jails during testing.
 		command += " && sudo fail2ban-client stop recidive"
-	os.system("%s \"%s\"" % (ssh_command, command))
+	os.system(f'{ssh_command} "{command}"')
 
 def testfunc_runner(i, testfunc, *args):
 	print(i+1, end=" ", flush=True)
@@ -163,7 +167,6 @@ def run_test(testfunc, args, count, within_seconds, parallel):
 	# run testfunc sequentially and still get to count requests within
 	# the required time. So we split the requests across threads.
 
-	import requests.exceptions
 	from multiprocessing import Pool
 
 	restart_fail2ban_service()
@@ -179,7 +182,7 @@ def run_test(testfunc, args, count, within_seconds, parallel):
 		# Distribute the requests across the pool.
 		asyncresults = []
 		for i in range(count):
-			ar = p.apply_async(testfunc_runner, [i, testfunc] + list(args))
+			ar = p.apply_async(testfunc_runner, [i, testfunc, *list(args)])
 			asyncresults.append(ar)
 
 		# Wait for all runs to finish.
@@ -232,7 +235,7 @@ if __name__ == "__main__":
 	run_test(managesieve_test, [], 20, 30, 4)
 
 	# Mail-in-a-Box control panel
-	run_test(http_test, ["/admin/me", 200], 20, 30, 1)
+	run_test(http_test, ["/admin/login", 200], 20, 30, 1)
 
 	# Munin via the Mail-in-a-Box control panel
 	run_test(http_test, ["/admin/munin/", 401], 20, 30, 1)

tests/test_dns.py

@@ -7,7 +7,7 @@
 # where ipaddr is the IP address of your Mail-in-a-Box
 # and hostname is the domain name to check the DNS for.
 
-import sys, re, difflib
+import sys, re
 import dns.reversename, dns.resolver
 
 if len(sys.argv) < 3:
@@ -27,10 +27,10 @@ def test(server, description):
 		("ns2." + primary_hostname, "A", ipaddr),
 		("www." + hostname, "A", ipaddr),
 		(hostname, "MX", "10 " + primary_hostname + "."),
-		(hostname, "TXT", "\"v=spf1 mx -all\""),
+		(hostname, "TXT", '"v=spf1 mx -all"'),
-		("mail._domainkey." + hostname, "TXT", "\"v=DKIM1; k=rsa; s=email; \" \"p=__KEY__\""),
+		("mail._domainkey." + hostname, "TXT", '"v=DKIM1; k=rsa; s=email; " "p=__KEY__"'),
 		#("_adsp._domainkey." + hostname, "TXT", "\"dkim=all\""),
-		("_dmarc." + hostname, "TXT", "\"v=DMARC1; p=quarantine\""),
+		("_dmarc." + hostname, "TXT", '"v=DMARC1; p=quarantine;"'),
 	]
 	return test2(tests, server, description)
 
@@ -48,10 +48,10 @@ def test2(tests, server, description):
 	for qname, rtype, expected_answer in tests:
 		# do the query and format the result as a string
 		try:
-			response = dns.resolver.query(qname, rtype)
+			response = dns.resolver.resolve(qname, rtype)
 		except dns.resolver.NoNameservers:
 			# host did not have an answer for this query
-			print("Could not connect to %s for DNS query." % server)
+			print(f"Could not connect to {server} for DNS query.")
 			sys.exit(1)
 		except (dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
 			# host did not have an answer for this query; not sure what the
@@ -59,14 +59,14 @@ def test2(tests, server, description):
 			response = ["[no value]"]
 		response = ";".join(str(r) for r in response)
 		response = re.sub(r"(\"p=).*(\")", r"\1__KEY__\2", response) # normalize DKIM key
-		response = response.replace("\"\" ", "") # normalize TXT records (DNSSEC signing inserts empty text string components)
+		response = response.replace('"" ', "") # normalize TXT records (DNSSEC signing inserts empty text string components)
 
 		# is it right?
 		if response == expected_answer:
 			#print(server, ":", qname, rtype, "?", response)
 			continue
 
-		# show prolem
+		# show problem
 		if first:
 			print("Incorrect DNS Response from", description)
 			print()
@@ -79,7 +79,7 @@ def test2(tests, server, description):
 # Test the response from the machine itself.
 if not test(ipaddr, "Mail-in-a-Box"):
 	print ()
-	print ("Please run the Mail-in-a-Box setup script on %s again." % hostname)
+	print (f"Please run the Mail-in-a-Box setup script on {hostname} again.")
 	sys.exit(1)
 else:
 	print ("The Mail-in-a-Box provided correct DNS answers.")
@@ -89,7 +89,7 @@ else:
 	# to see if the machine is hooked up to recursive DNS properly.
 	if not test("8.8.8.8", "Google Public DNS"):
 		print ()
-		print ("Check that the nameserver settings for %s are correct at your domain registrar. It may take a few hours for Google Public DNS to update after changes on your Mail-in-a-Box." % hostname)
+		print (f"Check that the nameserver settings for {hostname} are correct at your domain registrar. It may take a few hours for Google Public DNS to update after changes on your Mail-in-a-Box.")
 		sys.exit(1)
 	else:
 		print ("Your domain registrar or DNS host appears to be configured correctly as well. Public DNS provides the same answers.")
@@ -98,7 +98,7 @@ else:
 		# And if that's OK, also check reverse DNS (the PTR record).
 		if not test_ptr("8.8.8.8", "Google Public DNS (Reverse DNS)"):
 			print ()
-			print ("The reverse DNS for %s is not correct. Consult your ISP for how to set the reverse DNS (also called the PTR record) for %s to %s." % (hostname, hostname, ipaddr))
+			print (f"The reverse DNS for {hostname} is not correct. Consult your ISP for how to set the reverse DNS (also called the PTR record) for {hostname} to {ipaddr}.")
 			sys.exit(1)
 		else:
 			print ("And the reverse DNS for the domain is correct.")

tests/test_mail.py

@@ -30,15 +30,11 @@ print("IMAP login is OK.")
 # Attempt to send a mail to ourself.
 mailsubject = "Mail-in-a-Box Automated Test Message " + uuid.uuid4().hex
 emailto = emailaddress
-msg = """From: {emailaddress}
+msg = f"""From: {emailaddress}
 To: {emailto}
-Subject: {subject}
+Subject: {mailsubject}
 
-This is a test message. It should be automatically deleted by the test script.""".format(
+This is a test message. It should be automatically deleted by the test script."""
-	emailaddress=emailaddress,
-	emailto=emailto,
-	subject=mailsubject,
-	)
 
 # Connect to the server on the SMTP submission TLS port.
 server = smtplib.SMTP_SSL(host)
@@ -48,9 +44,9 @@ server = smtplib.SMTP_SSL(host)
 ipaddr = socket.gethostbyname(host) # IPv4 only!
 reverse_ip = dns.reversename.from_address(ipaddr) # e.g. "1.0.0.127.in-addr.arpa."
 try:
-	reverse_dns = dns.resolver.query(reverse_ip, 'PTR')[0].target.to_text(omit_final_dot=True) # => hostname
+	reverse_dns = dns.resolver.resolve(reverse_ip, 'PTR')[0].target.to_text(omit_final_dot=True) # => hostname
 except dns.resolver.NXDOMAIN:
-	print("Reverse DNS lookup failed for %s. SMTP EHLO name check skipped." % ipaddr)
+	print(f"Reverse DNS lookup failed for {ipaddr}. SMTP EHLO name check skipped.")
 	reverse_dns = None
 if reverse_dns is not None:
 	server.ehlo_or_helo_if_needed() # must send EHLO before getting the server's EHLO name
@@ -58,7 +54,7 @@ if reverse_dns is not None:
 	if helo_name != reverse_dns:
 		print("The server's EHLO name does not match its reverse hostname. Check DNS settings.")
 	else:
-		print("SMTP EHLO name (%s) is OK." % helo_name)
+		print(f"SMTP EHLO name ({helo_name}) is OK.")
 
 # Login and send a test email.
 server.login(emailaddress, pw)

tests/test_smtp_server.py

@@ -6,11 +6,11 @@ if len(sys.argv) < 3:
         sys.exit(1)
 
 host, toaddr, fromaddr = sys.argv[1:4]
-msg = """From: %s
+msg = f"""From: {fromaddr}
-To: %s
+To: {toaddr}
 Subject: SMTP server test
 
-This is a test message.""" % (fromaddr, toaddr)
+This is a test message."""
 
 server = smtplib.SMTP(host, 25)
 server.set_debuglevel(1)

tests/tls.py

@@ -88,15 +88,15 @@ def sslyze(opts, port, ok_ciphers):
 
 	try:
 		# Execute SSLyze.
-		out = subprocess.check_output([SSLYZE] + common_opts + opts + [connection_string])
+		out = subprocess.check_output([SSLYZE, *common_opts, *opts, connection_string])
 		out = out.decode("utf8")
 
 		# Trim output to make better for storing in git.
 		if "SCAN RESULTS FOR" not in out:
 			# Failed. Just output the error.
-			out = re.sub("[\w\W]*CHECKING HOST\(S\) AVAILABILITY\n\s*-+\n", "", out) # chop off header that shows the host we queried
+			out = re.sub("[\\w\\W]*CHECKING HOST\\(S\\) AVAILABILITY\n\\s*-+\n", "", out) # chop off header that shows the host we queried
-		out = re.sub("[\w\W]*SCAN RESULTS FOR.*\n\s*-+\n", "", out) # chop off header that shows the host we queried
+		out = re.sub("[\\w\\W]*SCAN RESULTS FOR.*\n\\s*-+\n", "", out) # chop off header that shows the host we queried
-		out = re.sub("SCAN COMPLETED IN .*", "", out)
+		out = re.sub(r"SCAN COMPLETED IN .*", "", out)
 		out = out.rstrip(" \n-") + "\n"
 
 		# Print.
@@ -105,8 +105,8 @@ def sslyze(opts, port, ok_ciphers):
 		# Pull out the accepted ciphers list for each SSL/TLS protocol
 		# version outputted.
 		accepted_ciphers = set()
-		for ciphers in re.findall(" Accepted:([\w\W]*?)\n *\n", out):
+		for ciphers in re.findall(" Accepted:([\\w\\W]*?)\n *\n", out):
-			accepted_ciphers |= set(re.findall("\n\s*(\S*)", ciphers))
+			accepted_ciphers |= set(re.findall("\n\\s*(\\S*)", ciphers))
 
 		# Compare to what Mozilla recommends, for a given modernness-level.
 		print("  Should Not Offer: " + (", ".join(sorted(accepted_ciphers-set(ok_ciphers))) or "(none -- good)"))
@@ -142,7 +142,7 @@ for cipher in csv.DictReader(io.StringIO(urllib.request.urlopen("https://raw.git
 client_compatibility = json.loads(urllib.request.urlopen("https://raw.githubusercontent.com/mail-in-a-box/user-agent-tls-capabilities/master/clients.json").read().decode("utf8"))
 cipher_clients = { }
 for client in client_compatibility:
-	if len(set(client['protocols']) & set(["TLS 1.0", "TLS 1.1", "TLS 1.2"])) == 0: continue # does not support TLS
+	if len(set(client['protocols']) & {"TLS 1.0", "TLS 1.1", "TLS 1.2"}) == 0: continue # does not support TLS
 	for cipher in client['ciphers']:
 		cipher_clients.setdefault(cipher_names.get(cipher), set()).add("/".join(x for x in [client['client']['name'], client['client']['version'], client['client']['platform']] if x))
 

tools/archive_conf_files.sh

@@ -1,9 +1,10 @@
+#!/bin/bash
 # Use this script to make an archive of the contents of all
 # of the configuration files we edit with editconf.py.
-for fn in `grep -hr editconf.py setup | sed "s/tools\/editconf.py //" | sed "s/ .*//" | sort | uniq`; do
+for fn in $(grep -hr editconf.py setup | sed "s/tools\/editconf.py //" | sed "s/ .*//" | sort | uniq); do
 	echo ======================================================================
-	echo $fn
+	echo "$fn"
 	echo ======================================================================
-	cat $fn
+	cat "$fn"
 done
 

tools/dns_update

@@ -3,4 +3,4 @@ POSTDATA=dummy
 if [ "$1" == "--force" ]; then
 	POSTDATA=force=1
 fi
-curl -s -d $POSTDATA --user $(</var/lib/mailinabox/api.key): http://127.0.0.1:10222/dns/update
+curl -s -d $POSTDATA --user "$(</var/lib/mailinabox/api.key):" http://127.0.0.1:10222/dns/update

tools/editconf.py

@@ -14,19 +14,23 @@
 #
 # NAME VALUE
 #
+# If the -e option is given and VALUE is empty, the setting is removed
+# from the configuration file if it is set (i.e. existing occurrences
+# are commented out and no new setting is added).
+#
 # If the -c option is given, then the supplied character becomes the comment character
 #
 # If the -w option is given, then setting lines continue onto following
 # lines while the lines start with whitespace, e.g.:
 #
 # NAME VAL
-#   UE 
+#   UE
 
 import sys, re
 
 # sanity check
 if len(sys.argv) < 3:
-	print("usage: python3 editconf.py /etc/file.conf [-s] [-w] [-c <CHARACTER>] [-t] NAME=VAL [NAME=VAL ...]")
+	print("usage: python3 editconf.py /etc/file.conf [-e] [-s] [-w] [-c <CHARACTER>] [-t] NAME=VAL [NAME=VAL ...]")
 	sys.exit(1)
 
 # parse command line arguments
@@ -35,6 +39,7 @@ settings = sys.argv[2:]
 
 delimiter = "="
 delimiter_re = r"\s*=\s*"
+erase_setting = False
 comment_char = "#"
 folded_lines = False
 testing = False
@@ -44,6 +49,9 @@ while settings[0][0] == "-" and settings[0] != "--":
 		# Space is the delimiter
 		delimiter = " "
 		delimiter_re = r"\s+"
+	elif opt == "-e":
+		# Erase settings that have empty values.
+		erase_setting = True
 	elif opt == "-w":
 		# Line folding is possible in this file.
 		folded_lines = True
@@ -68,69 +76,75 @@ for setting in settings:
 
 found = set()
 buf = ""
-input_lines = list(open(filename))
+with open(filename, encoding="utf-8") as f:
+        input_lines = list(f)
 
 while len(input_lines) > 0:
 	line = input_lines.pop(0)
 
 	# If this configuration file uses folded lines, append any folded lines
 	# into our input buffer.
-	if folded_lines and line[0] not in (comment_char, " ", ""):
+	if folded_lines and line[0] not in {comment_char, " ", ""}:
 		while len(input_lines) > 0 and input_lines[0][0] in " \t":
 			line += input_lines.pop(0)
 
 	# See if this line is for any settings passed on the command line.
 	for i in range(len(settings)):
-		# Check that this line contain this setting from the command-line arguments.
+		# Check if this line contain this setting from the command-line arguments.
 		name, val = settings[i].split("=", 1)
 		m = re.match(
-			   "(\s*)"
+			   r"(\s*)"
-			 + "(" + re.escape(comment_char) + "\s*)?"
+			 "(" + re.escape(comment_char) + r"\s*)?"
-			 + re.escape(name) + delimiter_re + "(.*?)\s*$",
+			 + re.escape(name) + delimiter_re + r"(.*?)\s*$",
 			 line, re.S)
 		if not m: continue
 		indent, is_comment, existing_val = m.groups()
 
-		# If this is already the setting, do nothing.
+		# If this is already the setting, keep it in the file, except:
-		if is_comment is None and existing_val == val:
+		# * If we've already seen it before, then remove this duplicate line.
+		# * If val is empty and erase_setting is on, then comment it out.
+		if is_comment is None and existing_val == val and not (not val and erase_setting):
 			# It may be that we've already inserted this setting higher
 			# in the file so check for that first.
 			if i in found: break
 			buf += line
 			found.add(i)
 			break
-		
+
 		# comment-out the existing line (also comment any folded lines)
 		if is_comment is None:
 			buf += comment_char + line.rstrip().replace("\n", "\n" + comment_char) + "\n"
 		else:
 			# the line is already commented, pass it through
 			buf += line
-		
+
-		# if this option oddly appears more than once, don't add the setting again
+		# if this option already is set don't add the setting again,
-		if i in found:
+		# or if we're clearing the setting with -e, don't add it
+		if (i in found) or (not val and erase_setting):
 			break
-		
+
 		# add the new setting
 		buf += indent + name + delimiter + val + "\n"
-		
+
 		# note that we've applied this option
 		found.add(i)
-		
+
 		break
 	else:
 		# If did not match any setting names, pass this line through.
 		buf += line
-		
+
-# Put any settings we didn't see at the end of the file.
+# Put any settings we didn't see at the end of the file,
+# except settings being cleared.
 for i in range(len(settings)):
 	if i not in found:
 		name, val = settings[i].split("=", 1)
-		buf += name + delimiter + val + "\n"
+		if not (not val and erase_setting):
+			buf += name + delimiter + val + "\n"
 
 if not testing:
 	# Write out the new file.
-	with open(filename, "w") as f:
+	with open(filename, "w", encoding="utf-8") as f:
 		f.write(buf)
 else:
 	# Just print the new file to stdout.

tools/owncloud-restore.sh

@@ -14,19 +14,19 @@ if [ -z "$1" ]; then
 	echo
 	echo "Available backups:"
 	echo
-	find $STORAGE_ROOT/owncloud-backup/* -maxdepth 0 -type d
+	find "$STORAGE_ROOT/owncloud-backup/"* -maxdepth 0 -type d
 	echo
 	echo "Supply the directory that was created during the last installation as the only commandline argument"
 	exit
 fi
 
-if [ ! -f $1/config.php ]; then
+if [ ! -f "$1/config.php" ]; then
 	echo "This isn't a valid backup location"
 	exit 1
 fi
 
 echo "Restoring backup from $1"
-service php7.2-fpm stop
+service php8.0-fpm stop
 
 # remove the current ownCloud/Nextcloud installation
 rm -rf /usr/local/lib/owncloud/
@@ -36,14 +36,14 @@ cp -r  "$1/owncloud-install" /usr/local/lib/owncloud
 # restore access rights
 chmod 750 /usr/local/lib/owncloud/{apps,config}
 
-cp "$1/owncloud.db" $STORAGE_ROOT/owncloud/
+cp "$1/owncloud.db" "$STORAGE_ROOT/owncloud/"
-cp "$1/config.php" $STORAGE_ROOT/owncloud/
+cp "$1/config.php" "$STORAGE_ROOT/owncloud/"
 
-ln -sf $STORAGE_ROOT/owncloud/config.php /usr/local/lib/owncloud/config/config.php
+ln -sf "$STORAGE_ROOT/owncloud/config.php" /usr/local/lib/owncloud/config/config.php
-chown -f -R www-data.www-data $STORAGE_ROOT/owncloud /usr/local/lib/owncloud
+chown -f -R www-data:www-data "$STORAGE_ROOT/owncloud" /usr/local/lib/owncloud
-chown www-data.www-data $STORAGE_ROOT/owncloud/config.php
+chown www-data:www-data "$STORAGE_ROOT/owncloud/config.php"
 
-sudo -u www-data php /usr/local/lib/owncloud/occ maintenance:mode --off
+sudo -u www-data "php$PHP_VER" /usr/local/lib/owncloud/occ maintenance:mode --off
 
-service php7.2-fpm start
+service php8.0-fpm start
 echo "Done"

tools/owncloud-unlockadmin.sh

@@ -9,15 +9,15 @@
 source /etc/mailinabox.conf # load global vars
 
 ADMIN=$(./mail.py user admins | head -n 1)
-test -z "$1" || ADMIN=$1 
+test -z "$1" || ADMIN=$1
 
-echo I am going to unlock admin features for $ADMIN.
+echo "I am going to unlock admin features for $ADMIN."
-echo You can provide another user to unlock as the first argument of this script.
+echo "You can provide another user to unlock as the first argument of this script."
 echo
-echo WARNING: you could break mail-in-a-box when fiddling around with Nextcloud\'s admin interface
+echo "WARNING: you could break mail-in-a-box when fiddling around with Nextcloud's admin interface"
-echo If in doubt, press CTRL-C to cancel.
+echo "If in doubt, press CTRL-C to cancel."
-echo 
+echo
-echo Press enter to continue.
+echo "Press enter to continue."
 read
 
-sudo -u www-data php /usr/local/lib/owncloud/occ group:adduser admin $ADMIN && echo Done.
+sudo -u www-data "php$PHP_VER" /usr/local/lib/owncloud/occ group:adduser admin "$ADMIN" && echo "Done."

tools/parse-nginx-log-bootstrap-accesses.py

@@ -17,13 +17,8 @@ accesses = set()
 # Scan the current and rotated access logs.
 for fn in glob.glob("/var/log/nginx/access.log*"):
 	# Gunzip if necessary.
-	if fn.endswith(".gz"):
-		f = gzip.open(fn)
-	else:
-		f = open(fn, "rb")
-
 	# Loop through the lines in the access log.
-	with f:
+	with (gzip.open if fn.endswith(".gz") else open)(fn, "rb") as f:
 		for line in f:
 			# Find lines that are GETs on the bootstrap script by either curl or wget.
 			# (Note that we purposely skip ...?ping=1 requests which is the admin panel querying us for updates.)
@@ -43,7 +38,8 @@ for date, ip in accesses:
 # Since logs are rotated, store the statistics permanently in a JSON file.
 # Load in the stats from an existing file.
 if os.path.exists(outfn):
-	existing_data = json.load(open(outfn))
+	with open(outfn, encoding="utf-8") as f:
+		existing_data = json.load(f)
 	for date, count in existing_data:
 		if date not in by_date:
 			by_date[date] = count
@@ -55,5 +51,5 @@ by_date = sorted(by_date.items())
 by_date.pop(-1)
 
 # Write out.
-with open(outfn, "w") as f:
+with open(outfn, "w", encoding="utf-8") as f:
 	json.dump(by_date, f, sort_keys=True, indent=True)

tools/readable_bash.py

@@ -124,13 +124,14 @@ def generate_documentation():
  """)
 
 	parser = Source.parser()
-	for line in open("setup/start.sh"):
+	with open("setup/start.sh", encoding="utf-8") as start_file:
-		try:
+		for line in start_file:
-			fn = parser.parse_string(line).filename()
+			try:
-		except:
+				fn = parser.parse_string(line).filename()
-			continue
+			except:
-		if fn in ("setup/start.sh", "setup/preflight.sh", "setup/questions.sh", "setup/firstuser.sh", "setup/management.sh"):
+				continue
-			continue
+			if fn in {"setup/start.sh", "setup/preflight.sh", "setup/questions.sh", "setup/firstuser.sh", "setup/management.sh"}:
+				continue
 
 		import sys
 		print(fn, file=sys.stderr)
@@ -191,8 +192,7 @@ class CatEOF(Grammar):
 	def value(self):
 		content = self[9].string
 		content = re.sub(r"\\([$])", r"\1", content) # un-escape bash-escaped characters
-		return "<div class='write-to'><div class='filename'>%s <span>(%s)</span></div><pre>%s</pre></div>\n" \
+		return "<div class='write-to'><div class='filename'>{} <span>({})</span></div><pre>{}</pre></div>\n".format(self[4].string,
-			% (self[4].string,
 			   "overwrite" if ">>" not in self[2].string else "append to",
 			   cgi.escape(content))
 
@@ -222,14 +222,14 @@ class EditConf(Grammar):
 		EOL
 		)
 	def value(self):
-		conffile = self[1]
+		# conffile = self[1]
 		options = []
 		eq = "="
 		if self[3] and "-s" in self[3].string: eq = " "
-		for opt in re.split("\s+", self[4].string):
+		for opt in re.split(r"\s+", self[4].string):
 			k, v = opt.split("=", 1)
 			v = re.sub(r"\n+", "", fixup_tokens(v)) # not sure why newlines are getting doubled
-			options.append("%s%s%s" % (k, eq, v))
+			options.append(f"{k}{eq}{v}")
 		return "<div class='write-to'><div class='filename'>" + self[1].string + " <span>(change settings)</span></div><pre>" + "\n".join(cgi.escape(s) for s in options) + "</pre></div>\n"
 
 class CaptureOutput(Grammar):
@@ -247,8 +247,8 @@ class SedReplace(Grammar):
 class EchoPipe(Grammar):
 	grammar = OPTIONAL(SPACE), L("echo "), REST_OF_LINE, L(' | '), REST_OF_LINE, EOL
 	def value(self):
-		text = " ".join("\"%s\"" % s for s in self[2].string.split(" "))
+		text = " ".join(f'"{s}"' for s in self[2].string.split(" "))
-		return "<pre class='shell'><div>echo " + recode_bash(text) + " \<br> | " + recode_bash(self[4].string) + "</div></pre>\n"
+		return "<pre class='shell'><div>echo " + recode_bash(text) + r" \<br> | " + recode_bash(self[4].string) + "</div></pre>\n"
 
 def shell_line(bash):
 	return "<pre class='shell'><div>" + recode_bash(bash.strip()) + "</div></pre>\n"
@@ -323,7 +323,7 @@ def quasitokenize(bashscript):
 		elif c == "\\":
 			# Escaping next character.
 			escape_next = True
-		elif quote_mode is None and c in ('"', "'"):
+		elif quote_mode is None and c in {'"', "'"}:
 			# Starting a quoted word.
 			quote_mode = c
 		elif c == quote_mode:
@@ -363,7 +363,7 @@ def quasitokenize(bashscript):
 			newscript += c
 
 		# "<< EOF" escaping.
-		if quote_mode is None and re.search("<<\s*EOF\n$", newscript):
+		if quote_mode is None and re.search("<<\\s*EOF\n$", newscript):
 			quote_mode = "EOF"
 		elif quote_mode == "EOF" and re.search("\nEOF\n$", newscript):
 			quote_mode = None
@@ -377,7 +377,7 @@ def recode_bash(s):
 			tok = tok.replace(c, "\\" + c)
 		tok = fixup_tokens(tok)
 		if " " in tok or '"' in tok:
-			tok = tok.replace("\"", "\\\"")
+			tok = tok.replace('"', '\\"')
 			tok = '"' + tok +'"'
 		else:
 			tok = tok.replace("'", "\\'")
@@ -400,20 +400,20 @@ class BashScript(Grammar):
 
 	@staticmethod
 	def parse(fn):
-		if fn in ("setup/functions.sh", "/etc/mailinabox.conf"): return ""
+		if fn in {"setup/functions.sh", "/etc/mailinabox.conf"}: return ""
-		string = open(fn).read()
+		with open(fn, encoding="utf-8") as f:
+			string = f.read()
 
 		# tokenize
 		string = re.sub(".* #NODOC\n", "", string)
-		string = re.sub("\n\s*if .*then.*|\n\s*fi|\n\s*else|\n\s*elif .*", "", string)
+		string = re.sub("\n\\s*if .*then.*|\n\\s*fi|\n\\s*else|\n\\s*elif .*", "", string)
 		string = quasitokenize(string)
-		string = re.sub("hide_output ", "", string)
+		string = string.replace(r"hide_output ", "")
 
 		parser = BashScript.parser()
 		result = parser.parse_string(string)
 
-		v = "<div class='row'><div class='col-xs-12 sourcefile'>view the bash source for the following section at <a href=\"%s\">%s</a></div></div>\n" \
+		v = "<div class='row'><div class='col-xs-12 sourcefile'>view the bash source for the following section at <a href=\"{}\">{}</a></div></div>\n".format("https://github.com/mail-in-a-box/mailinabox/tree/master/" + fn, fn)
-			 % ("https://github.com/mail-in-a-box/mailinabox/tree/master/" + fn, fn)
 
 		mode = 0
 		for item in result.value():
@@ -427,7 +427,7 @@ class BashScript(Grammar):
 					mode = 0
 					clz = "contd"
 				if mode == 0:
-					v += "<div class='row %s'>\n" % clz
+					v += f"<div class='row {clz}'>\n"
 					v += "<div class='col-md-6 prose'>\n"
 				v += item
 				mode = 1
@@ -458,17 +458,16 @@ class BashScript(Grammar):
 		v = fixup_tokens(v)
 
 		v = v.replace("</pre>\n<pre class='shell'>", "")
-		v = re.sub("<pre>([\w\W]*?)</pre>", lambda m : "<pre>" + strip_indent(m.group(1)) + "</pre>", v)
+		v = re.sub(r"<pre>([\w\W]*?)</pre>", lambda m : "<pre>" + strip_indent(m.group(1)) + "</pre>", v)
 
 		v = re.sub(r"(\$?)PRIMARY_HOSTNAME", r"<b>box.yourdomain.com</b>", v)
 		v = re.sub(r"\$STORAGE_ROOT", r"<b>$STORE</b>", v)
-		v = v.replace("`pwd`",  "<code><b>/path/to/mailinabox</b></code>")
+		return v.replace("`pwd`",  "<code><b>/path/to/mailinabox</b></code>")
 
-		return v
 
 def wrap_lines(text, cols=60):
 	ret = ""
-	words = re.split("(\s+)", text)
+	words = re.split(r"(\s+)", text)
 	linelen = 0
 	for w in words:
 		if linelen + len(w) > cols-1:

tools/ssl_cleanup

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Cleanup SSL certificates which expired more than 7 days ago from $STORAGE_ROOT/ssl and move them to $STORAGE_ROOT/ssl.expired
+
+source /etc/mailinabox.conf
+shopt -s extglob nullglob
+
+retain_after="$(date --date="7 days ago" +%Y%m%d)"
+
+mkdir -p $STORAGE_ROOT/ssl.expired
+for file in $STORAGE_ROOT/ssl/*-+([0-9])-+([0-9a-f]).pem; do
+  pem="$(basename "$file")"
+  not_valid_after="$(cut -d- -f1 <<< "${pem: -21}")"
+
+  if [ "$not_valid_after" -lt "$retain_after" ]; then
+    mv "$file" "$STORAGE_ROOT/ssl.expired/${pem}"
+  fi
+done

tools/web_update

@@ -1,2 +1,2 @@
 #!/bin/bash
-curl -s -d POSTDATA --user $(</var/lib/mailinabox/api.key): http://127.0.0.1:10222/web/update
+curl -s -d POSTDATA --user "$(</var/lib/mailinabox/api.key):" http://127.0.0.1:10222/web/update