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Code Issues Releases Wiki Activity

add SRV records for CardDAV/CalDAV

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DavDroid's latest version's account configuration no longer just asked for a hostname. Its email address & password configuration mode did not work without a SRV record.
This commit is contained in:
Joshua Tauberer 2016-07-31 20:53:57 -04:00
parent b044dda28f
commit cf3e1cd595
2 changed files with 11 additions and 0 deletions
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4
CHANGELOG.md
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@ -15,6 +15,10 @@ Control panel:
* The HSTS header was missing.
* New status checks were added for the ufw firewall.
DNS:
* Add SRV records for CardDAV/CalDAV to facilitate autoconfiguration (e.g. in DavDroid, whose latest version didn't seem to work to configure with entering just a hostname).
System:
* fail2ban jails added for SMTP submission, Roundcube, ownCloud, the control panel, and munin.

7
management/dns_update.py
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@ -274,6 +274,13 @@ def build_zone(domain, all_domains, additional_records, www_redirect_domains, en
if not has_rec(dmarc_qname, "TXT", prefix="v=DMARC1; "):
records.append((dmarc_qname, "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." % (qname + "." + domain)))
# Add CardDAV/CalDAV SRV records on the non-primary hostname that points to the primary hostname.
# The SRV record format is priority (0, whatever), weight (0, whatever), port, service provider hostname (w/ trailing dot).
if domain != env["PRIMARY_HOSTNAME"]:
for dav in ("card", "cal"):
qname = "_" + dav + "davs._tcp"
if not has_rec(qname, "SRV"):
records.append((qname, "SRV", "0 0 443 " + env["PRIMARY_HOSTNAME"] + ".", "Recommended. Specifies the hostname of the server that handles CardDAV/CalDAV services for email addresses on this domain."))
# Sort the records. The None records *must* go first in the nsd zone file. Otherwise it doesn't matter.
records.sort(key = lambda rec : list(reversed(rec[0].split(".")) if rec[0] is not None else ""))