docker-mailserver/target/scripts/build/packages.sh

224 lines
7.5 KiB
Bash

#!/bin/bash
# -eE :: exit on error (do this in functions as well)
# -u :: show (and exit) when using unset variables
# -o pipefail :: exit on error in pipes
set -eE -u -o pipefail
# shellcheck source=../helpers/log.sh
source /usr/local/bin/helpers/log.sh
_log_level_is 'trace' && QUIET='-y' || QUIET='-qq'
function _pre_installation_steps() {
_log 'info' 'Starting package installation'
_log 'debug' 'Running pre-installation steps'
_log 'trace' 'Updating package signatures'
apt-get "${QUIET}" update
_log 'trace' 'Installing packages that are needed early'
apt-get "${QUIET}" install --no-install-recommends apt-utils 2>/dev/null
_log 'trace' 'Upgrading packages'
apt-get "${QUIET}" upgrade
}
function _install_postfix() {
_log 'debug' 'Installing Postfix'
_log 'warn' 'Applying workaround for Postfix bug (see https://github.com//issues/2023#issuecomment-855326403)'
# Debians postfix package has a post-install script that expects a valid FQDN hostname to work:
mv /bin/hostname /bin/hostname.bak
echo "echo 'docker-mailserver.invalid'" >/bin/hostname
chmod +x /bin/hostname
apt-get "${QUIET}" install --no-install-recommends postfix
mv /bin/hostname.bak /bin/hostname
# Irrelevant - Debian's default `chroot` jail config for Postfix needed a separate syslog socket:
rm /etc/rsyslog.d/postfix.conf
}
function _install_packages() {
_log 'debug' 'Installing all packages now'
ANTI_VIRUS_SPAM_PACKAGES=(
amavisd-new clamav clamav-daemon
pyzor razor spamassassin
)
CODECS_PACKAGES=(
altermime arj bzip2
cabextract cpio file
gzip lhasa liblz4-tool
lrzip lzop nomarch
p7zip-full pax rpm2cpio
unrar-free unzip xz-utils
)
MISCELLANEOUS_PACKAGES=(
apt-transport-https binutils bsd-mailx
ca-certificates curl dbconfig-no-thanks
dumb-init gnupg iproute2 libdate-manip-perl
libldap-common libmail-spf-perl
libnet-dns-perl locales logwatch
netcat-openbsd nftables rsyslog
supervisor uuid whois
)
POSTFIX_PACKAGES=(
pflogsumm postgrey postfix-ldap
postfix-pcre postfix-policyd-spf-python postsrsd
)
MAIL_PROGRAMS_PACKAGES=(
fetchmail opendkim opendkim-tools
opendmarc libsasl2-modules sasl2-bin
)
# `bind9-dnsutils` provides the `dig` command
# `iputils-ping` provides the `ping` command
DEBUG_PACKAGES=(
bind9-dnsutils iputils-ping less nano
)
apt-get "${QUIET}" --no-install-recommends install \
"${ANTI_VIRUS_SPAM_PACKAGES[@]}" \
"${CODECS_PACKAGES[@]}" \
"${MISCELLANEOUS_PACKAGES[@]}" \
"${POSTFIX_PACKAGES[@]}" \
"${MAIL_PROGRAMS_PACKAGES[@]}" \
"${DEBUG_PACKAGES[@]}"
}
function _install_dovecot() {
declare -a DOVECOT_PACKAGES
DOVECOT_PACKAGES=(
dovecot-core dovecot-imapd
dovecot-ldap dovecot-lmtpd dovecot-managesieved
dovecot-pop3d dovecot-sieve dovecot-solr
)
if [[ ${DOVECOT_COMMUNITY_REPO} -eq 1 ]]; then
_log 'trace' 'Using Dovecot community repository'
curl https://repo.dovecot.org/DOVECOT-REPO-GPG | gpg --import
gpg --export ED409DA1 > /etc/apt/trusted.gpg.d/dovecot.gpg
echo "deb https://repo.dovecot.org/ce-2.3-latest/debian/bullseye bullseye main" > /etc/apt/sources.list.d/dovecot.list
_log 'trace' 'Updating Dovecot package signatures'
apt-get "${QUIET}" update
fi
_log 'debug' 'Installing Dovecot'
apt-get "${QUIET}" --no-install-recommends install "${DOVECOT_PACKAGES[@]}"
# dependency for fts_xapian
apt-get "${QUIET}" --no-install-recommends install libxapian30
}
function _install_rspamd() {
_log 'trace' 'Adding Rspamd package signatures'
local DEB_FILE='/etc/apt/sources.list.d/rspamd.list'
local RSPAMD_PACKAGE_NAME
# We try getting the most recent version of Rspamd for aarch64 (from an official source, which
# is the backports repository). The version for aarch64 is 3.2; the most recent version for amd64
# that we get with the official PPA is 3.4.
#
# Not removing it later is fine as you have to explicitly opt into installing a backports package
# which is not something you could be doing by accident.
if [[ $(uname --machine) == 'aarch64' ]]; then
echo '# Official Rspamd PPA does not support aarch64, so we use the Bullseye backports' >"${DEB_FILE}"
echo 'deb [arch=arm64] http://deb.debian.org/debian bullseye-backports main' >>"${DEB_FILE}"
RSPAMD_PACKAGE_NAME='rspamd/bullseye-backports'
else
curl -sSfL https://rspamd.com/apt-stable/gpg.key | gpg --dearmor >/etc/apt/trusted.gpg.d/rspamd.gpg
local URL='[arch=amd64 signed-by=/etc/apt/trusted.gpg.d/rspamd.gpg] http://rspamd.com/apt-stable/ bullseye main'
echo "deb ${URL}" >"${DEB_FILE}"
echo "deb-src ${URL}" >>"${DEB_FILE}"
RSPAMD_PACKAGE_NAME='rspamd'
fi
_log 'debug' 'Installing Rspamd'
apt-get "${QUIET}" update
apt-get "${QUIET}" --no-install-recommends install "${RSPAMD_PACKAGE_NAME}" 'redis-server'
}
function _install_fail2ban() {
local FAIL2BAN_DEB_URL='https://github.com/fail2ban/fail2ban/releases/download/1.0.2/fail2ban_1.0.2-1.upstream1_all.deb'
local FAIL2BAN_DEB_ASC_URL="${FAIL2BAN_DEB_URL}.asc"
local FAIL2BAN_GPG_FINGERPRINT='8738 559E 26F6 71DF 9E2C 6D9E 683B F1BE BD0A 882C'
local FAIL2BAN_GPG_PUBLIC_KEY_ID='0x683BF1BEBD0A882C'
local FAIL2BAN_GPG_PUBLIC_KEY_SERVER='hkps://keyserver.ubuntu.com'
_log 'debug' 'Installing Fail2ban'
apt-get "${QUIET}" --no-install-recommends install python3-pyinotify python3-dnspython
gpg --keyserver "${FAIL2BAN_GPG_PUBLIC_KEY_SERVER}" --recv-keys "${FAIL2BAN_GPG_PUBLIC_KEY_ID}" 2>&1
curl -Lkso fail2ban.deb "${FAIL2BAN_DEB_URL}"
curl -Lkso fail2ban.deb.asc "${FAIL2BAN_DEB_ASC_URL}"
FINGERPRINT=$(LANG=C gpg --verify fail2ban.deb.asc fail2ban.deb |& sed -n 's#Primary key fingerprint: \(.*\)#\1#p')
if [[ -z ${FINGERPRINT} ]]; then
echo 'ERROR: Invalid GPG signature!' >&2
exit 1
fi
if [[ ${FINGERPRINT} != "${FAIL2BAN_GPG_FINGERPRINT}" ]]; then
echo "ERROR: Wrong GPG fingerprint!" >&2
exit 1
fi
dpkg -i fail2ban.deb 2>&1
rm fail2ban.deb fail2ban.deb.asc
_log 'debug' 'Patching Fail2ban to enable network bans'
# Enable network bans
# https://github.com/docker-mailserver/docker-mailserver/issues/2669
sedfile -i -r 's/^_nft_add_set = .+/_nft_add_set = <nftables> add set <table_family> <table> <addr_set> \\{ type <addr_type>\\; flags interval\\; \\}/' /etc/fail2ban/action.d/nftables.conf
}
# Presently the getmail6 package is v6.14, which is too old.
# v6.18 contains fixes for Google and Microsoft OAuth support.
# using pip to install getmail.
# TODO This can be removed when the base image is updated to Debian 12 (Bookworm)
function _install_getmail() {
_log 'debug' 'Installing getmail6'
apt-get "${QUIET}" --no-install-recommends install python3-pip
pip3 install --no-cache-dir 'getmail6~=6.18.12'
ln -s /usr/local/bin/getmail /usr/bin/getmail
ln -s /usr/local/bin/getmail-gmail-xoauth-tokens /usr/bin/getmail-gmail-xoauth-tokens
apt-get "${QUIET}" purge python3-pip
apt-get "${QUIET}" autoremove
}
function _remove_data_after_package_installations() {
_log 'debug' 'Deleting sensitive files (secrets)'
rm /etc/postsrsd.secret
_log 'debug' 'Deleting default logwatch cronjob'
rm /etc/cron.daily/00logwatch
}
function _post_installation_steps() {
_log 'debug' 'Running post-installation steps (cleanup)'
apt-get "${QUIET}" clean
rm -rf /var/lib/apt/lists/*
_log 'info' 'Finished installing packages'
}
_pre_installation_steps
_install_postfix
_install_packages
_install_dovecot
_install_rspamd
_install_fail2ban
_install_getmail
_remove_data_after_package_installations
_post_installation_steps