Dovecot: compile `fts_xapian` from source to match Dovecot ABI (#3373)

Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
Co-authored-by: Casper <casperklein@users.noreply.github.com>

Dockerfile

@@ -1,18 +1,18 @@
 # syntax=docker.io/docker/dockerfile:1
 
-# This Dockerfile provides two stages: stage-base and stage-final
+# This Dockerfile provides four stages: stage-base, stage-compile, stage-main and stage-final
 # This is in preparation for more granular stages (eg ClamAV and Fail2Ban split into their own)
 
-#
-# Base stage provides all packages, config, and adds scripts
-#
-
-FROM docker.io/debian:11-slim AS stage-base
-
 ARG DEBIAN_FRONTEND=noninteractive
 ARG DOVECOT_COMMUNITY_REPO=1
 ARG LOG_LEVEL=trace
 
+FROM docker.io/debian:11-slim AS stage-base
+
+ARG DEBIAN_FRONTEND
+ARG DOVECOT_COMMUNITY_REPO
+ARG LOG_LEVEL
+
 SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]
 
 # -----------------------------------------------
@@ -25,11 +25,37 @@ RUN <<EOF
   adduser --quiet --system --group --disabled-password --home /var/lib/clamav --no-create-home --uid 200 clamav
 EOF
 
-COPY target/scripts/build/* /build/
+COPY target/scripts/build/packages.sh /build/
 COPY target/scripts/helpers/log.sh /usr/local/bin/helpers/log.sh
 
 RUN /bin/bash /build/packages.sh && rm -r /build
 
+
+
+# -----------------------------------------------
+# --- Compile deb packages ----------------------
+# -----------------------------------------------
+
+FROM stage-base AS stage-compile
+
+ARG LOG_LEVEL
+ARG DEBIAN_FRONTEND
+
+COPY target/scripts/build/compile.sh /build/
+RUN /bin/bash /build/compile.sh
+
+#
+# main stage provides all packages, config, and adds scripts
+#
+
+FROM stage-base AS stage-main
+
+ARG DEBIAN_FRONTEND
+ARG LOG_LEVEL
+
+SHELL ["/bin/bash", "-e", "-o", "pipefail", "-c"]
+
+
 # -----------------------------------------------
 # --- ClamAV & FeshClam -------------------------
 # -----------------------------------------------
@@ -56,6 +82,11 @@ EOF
 # --- Dovecot -----------------------------------
 # -----------------------------------------------
 
+# install fts_xapian plugin
+
+COPY --from=stage-compile dovecot-fts-xapian-1.5.5_1.5.5_*.deb /
+RUN dpkg -i /dovecot-fts-xapian-1.5.5_1.5.5_*.deb && rm /dovecot-fts-xapian-1.5.5_1.5.5_*.deb
+
 COPY target/dovecot/*.inc target/dovecot/*.conf /etc/dovecot/conf.d/
 COPY target/dovecot/dovecot-purge.cron /etc/cron.d/dovecot-purge.disabled
 RUN chmod 0 /etc/cron.d/dovecot-purge.disabled
@@ -265,7 +296,7 @@ COPY target/scripts/startup/setup.d /usr/local/bin/setup.d
 # Final stage focuses only on image config
 #
 
-FROM stage-base AS stage-final
+FROM stage-main AS stage-final
 ARG VCS_REVISION=unknown
 ARG VCS_VERSION=edge
 

target/scripts/build/compile.sh

@@ -0,0 +1,30 @@
+#!/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 _compile_dovecot_fts_xapian() {
+  apt-get "${QUIET}" update
+  apt-get "${QUIET}" --no-install-recommends install automake libtool pkg-config libicu-dev libsqlite3-dev libxapian-dev make build-essential dh-make devscripts dovecot-dev
+  curl -Lso dovecot-fts-xapian.tar.gz https://github.com/grosjo/fts-xapian/releases/download/1.5.5/dovecot-fts-xapian-1.5.5.tar.gz
+  tar xzvf dovecot-fts-xapian.tar.gz
+  cd fts-xapian-1.5.5
+  USER=root dh_make -p dovecot-fts-xapian-1.5.5 --single --native --copyright gpl2 -y
+  rm debian/*.ex debian/*.EX
+  cp PACKAGES/DEB/control debian/
+  cp PACKAGES/DEB/changelog debian/
+  cp PACKAGES/DEB/compat debian/
+  sed -i 's/1\.4\.11-6/1.5.5/g' debian/control
+  sed -i 's/1\.4\.11-6/1.5.5/g' debian/changelog
+
+  debuild -us -uc -B | tee /tmp/debuild.log 2>&1
+}
+
+_compile_dovecot_fts_xapian

target/scripts/build/packages.sh

@@ -94,26 +94,12 @@ function _install_dovecot() {
   declare -a DOVECOT_PACKAGES
 
   DOVECOT_PACKAGES=(
-    dovecot-core dovecot-fts-xapian dovecot-imapd
+    dovecot-core dovecot-imapd
     dovecot-ldap dovecot-lmtpd dovecot-managesieved
     dovecot-pop3d dovecot-sieve dovecot-solr
   )
 
   if [[ ${DOVECOT_COMMUNITY_REPO} -eq 1 ]]; then
-    # The package dovecot-fts-xapian is installed from the debian repository.
-    # Starting with version 1.4.9a-1+deb11u1, a new dependency was added: dovecot-abi-2.3.abiv13
-    # dovecot-abi-2.3.abiv13 is a virtual package provided by dovecot-core (from the debian repository).
-    # However dovecot-core from the community repository provides dovecot-abi-2.3.abiv19.
-    _log 'trace' "Create and install dummy package 'dovecot-abi-2.3.abiv13' to satisfy 'dovecot-fts-xapian' dependency"
-    apt-get "${QUIET}" --no-install-recommends install checkinstall
-    echo -e 'install:\n\t@true' > Makefile
-    echo 'Dummy package to satisfy dovecot-fts-xapian dependency' > description-pak
-    checkinstall -y --install=yes --pkgname="dovecot-abi-2.3.abiv13" --pkgversion=1 --maintainer=Nobody --pkggroup=mail
-    # Cleanup
-    rm description-pak dovecot-abi-2.3.abiv13*.deb Makefile
-    apt-get "${QUIET}" purge checkinstall
-    apt-get "${QUIET}" autoremove
-
     _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
@@ -125,6 +111,9 @@ function _install_dovecot() {
 
   _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() {