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mailinabox/setup/management.sh
Joshua Tauberer 60a2b58e57 Revert "Fixed SC2091: Remove surrounding $() to avoid executing output." and fix it another way
This reverts commit 67bcaea71e. The sub-shell was required to prevent the updated umask from affecting later steps. It broke the permissions of the fetched assets for the control panel: https://discourse.mailinabox.email/t/admin-panel-broken-after-restore-upgrade/12112/24

Instead, the `$()` is replaced with just `()` to create a subshell without executing its output.
2024-07-23 06:16:24 -04:00

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#!/bin/bash
source setup/functions.sh
source /etc/mailinabox.conf # load global vars
echo "Installing Mail-in-a-Box system management daemon..."
# DEPENDENCIES
# duplicity is used to make backups of user data.
#
# virtualenv is used to isolate the Python 3 packages we
# install via pip from the system-installed packages.
#
# certbot installs EFF's certbot which we use to
# provision free TLS certificates.
apt_install duplicity python3-pip virtualenv certbot rsync
# b2sdk is used for backblaze 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 boto3
# Create a virtualenv for the installation of Python 3 packages
# used by the management daemon.
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
# Upgrade pip because the Ubuntu-packaged version is out of date.
hide_output $venv/bin/pip install --upgrade pip
# Install other Python 3 packages used by the management daemon.
# The first line is the packages that Josh maintains himself!
# NOTE: email_validator is repeated in setup/questions.sh, so please keep the versions synced.
hide_output $venv/bin/pip install --upgrade \
rtyaml "email_validator>=1.0.0" "exclusiveprocess" \
flask dnspython python-dateutil expiringdict gunicorn \
qrcode[pil] pyotp \
"idna>=2.0.0" "cryptography==37.0.2" psutil postfix-mta-sts-resolver \
b2sdk boto3
# CONFIGURATION
# Create a backup directory and a random key for encrypting backups.
mkdir -p "$STORAGE_ROOT/backup"
if [ ! -f "$STORAGE_ROOT/backup/secret_key.txt" ]; then
(umask 077; openssl rand -base64 2048 > "$STORAGE_ROOT/backup/secret_key.txt")
fi
# Download jQuery and Bootstrap local files
# Make sure we have the directory to save to.
assets_dir=$inst_dir/vendor/assets
rm -rf $assets_dir
mkdir -p $assets_dir
# jQuery CDN URL
jquery_version=2.2.4
jquery_url=https://code.jquery.com
# Get jQuery
wget_verify $jquery_url/jquery-$jquery_version.min.js 69bb69e25ca7d5ef0935317584e6153f3fd9a88c $assets_dir/jquery.min.js
# Bootstrap CDN URL
bootstrap_version=3.4.1
bootstrap_url=https://github.com/twbs/bootstrap/releases/download/v$bootstrap_version/bootstrap-$bootstrap_version-dist.zip
# Get Bootstrap
wget_verify $bootstrap_url 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.
export LANGUAGE=en_US.UTF-8
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 $venv/bin/activate
export PYTHONPATH=$PWD/management
exec gunicorn -b localhost:10222 -w 1 --timeout 630 wsgi:app
EOF
chmod +x $inst_dir/start
cp --remove-destination conf/mailinabox.service /lib/systemd/system/mailinabox.service # target was previously a symlink so remove it first
hide_output systemctl link -f /lib/systemd/system/mailinabox.service
hide_output systemctl daemon-reload
hide_output systemctl enable mailinabox.service
# Perform nightly tasks at 3am in system time: take a backup, run
# status checks and email the administrator any changes.
minute=$((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)
EOF
# Start the management server.
restart_service mailinabox