#!/bin/sh

set -e
. /usr/share/debconf/confmodule

if [ -n "$EX4DEBUG" ]; then
  echo "now debugging $0 $@"
  set -x
fi

db_version 2.0

BDBVERSION=5.3

case "$1" in
  configure)

	if ! getent passwd Debian-exim > /dev/null ; then
	  echo 'Adding system-user for exim (v4)' 1>&2
	  adduser --system --group --quiet --home /var/spool/exim4 \
	    --no-create-home --disabled-login --force-badname Debian-exim
	fi
	# Create directories for log etc
	# install also fixes permissions.
	install -d -oDebian-exim -gadm -m2750 /var/log/exim4
	install -d -oDebian-exim -gDebian-exim -m750 /run/exim4
	install -d -oDebian-exim -gDebian-exim -m750 /var/spool/exim4
	install -d -oDebian-exim -gDebian-exim -m750 /var/spool/exim4/db \
		/var/spool/exim4/input /var/spool/exim4/msglog

	# Paranoia check: On any db upgrade throw away hints
	# databases.
	if test -r /var/lib/exim4/berkeleydbvers.txt ; then
		OLDBDB=`head -n1 /var/lib/exim4/berkeleydbvers.txt`
	else
		OLDBDB="unknown"
	fi
	if [ "$BDBVERSION" != "$OLDBDB" ] ; then
		echo exim: DB upgrade, deleting hints-db 1>&2
		rm -f /var/spool/exim4/db/misc-* /var/spool/exim4/db/wait-* \
			/var/spool/exim4/db/callout* \
			/var/spool/exim4/db/retry* \
			/var/spool/exim4/db/ratelimit* \
			/var/spool/exim4/db/__db.retry \
			/var/spool/exim4/db/__db.misc* \
			/var/spool/exim4/db/__db.callout \
			/var/spool/exim4/db/__db.ratelimit \
			/var/spool/exim4/db/__db.wait* \
			/var/spool/exim4/db/log.*
		echo "$BDBVERSION" > /var/lib/exim4/berkeleydbvers.txt
	fi
	# Check that db files are readable by this Exim's db library
	dbfiles=""
	for f in /var/spool/exim4/db/misc-* /var/spool/exim4/db/wait-* \
	         /var/spool/exim4/db/callout* /var/spool/exim4/db/retry* \
		 /var/spool/exim4/db/ratelimit* ; do
	    if [ -f "$f" ]; then
		if echo $f | grep \.lockfile\$ >/dev/null 2>&1; then
		    : # ignore lock files
		else
		    dbfiles="$dbfiles $(basename $f)"
		fi
	    fi
	done
	for dbfile in $dbfiles; do
	    if exim_dumpdb /var/spool/exim4 $dbfile >/dev/null 2>&1; then
		: # File OK
	    else
		echo "Resetting invalid $dbfile hints db" 1>&2
		rm -f /var/spool/exim4/db/$dbfile \
			/var/spool/exim4/db/$dbfile.* \
			/var/spool/exim4/db/__db.${dbfile}.* \
			/var/spool/exim4/db/log.*
	    fi
	done

       if [ -x "/etc/init.d/exim4" ]; then
           update-rc.d exim4 defaults >/dev/null
       fi

	# honor dpkg-statoverride settings for files not managed with dpkg
	for pat in /var/\*/exim4 /var/\*/exim4/\*; do
		[ $EX4DEBUG ] && eval echo "evaluate statoverride $pat"
		eval dpkg-statoverride --list $pat | while read USER GROUP MODE FILE; do
			[ $EX4DEBUG ] && echo "statoverride $USER $GROUP $MODE $FILE"
			chown ${USER}:${GROUP} $FILE
			chmod $MODE $FILE
		done
	done
	;;
esac

# Automatically added by dh_installtmpfiles/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$(command -v systemd-tmpfiles)" ]; then
		systemd-tmpfiles ${DPKG_ROOT:+--root="$DPKG_ROOT"} --create exim4-base.conf || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'exim4-base.timer' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'exim4-base.timer'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'exim4-base.timer' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'exim4-base.timer' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.15.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'exim4-base.service' 'exim4-base.timer' >/dev/null || true
	fi
fi
# End automatically added section