#!/bin/sh
#
# svnserve init script
# Latest change: Mi Apr 11 18:09:23 CEST 2007
#
### BEGIN INIT INFO
# Provides:          svnserve
# Required-Start:    $network $local_fs $remote_fs $syslog
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: init-Script for system wide svnserve daemon
### END INIT INFO
#
# A svnserverc file containg hosts and passwords for all local users should be
# placed in /etc/conf.d/svnserve.  Remember to make the /etc/conf.d/svnserve mode 600
# to avoid disclosing the users' passwords.
#
# This script will NOT start or stop svnserve if the /etc/svnserverc file
# does not exist or if START_DAEMON in /etc/default/svnserve is set to no.

set -e

# Defaults
PATH=/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/svnserve
USER=svn
OPTIONS=""

CONFFILE="/etc/conf.d/svnserve"
PIDFILE="/var/run/svnserve/svnserve.pid"
UIDL="/var/lib/svnserve/.svnserve-UIDL-cache"
START_DAEMON="no"

. /lib/lsb/init-functions

if [ -r /etc/default/svnserve ]; then
    . /etc/default/svnserve
fi

OPTIONS="$OPTIONS -d --pid-file $PIDFILE"

if [ ! "x$START_DAEMON" = "xyes" -a ! "$1" = "stop" ]; then
	echo "Edit /etc/default/svnserve to start svnserve"
	exit 0
fi

if [ ! -e $CONFFILE ]; then
    log_failure_msg "$CONFFILE not found."
    log_failure_msg "can not start svnserve daemon... consider disabling the script"
    exit 0
fi


test -f $DAEMON || exit 0

if [ "$1" = "start" ]; then
    if [ ! -r $CONFFILE ] ; then
        log_failure_msg "$CONFFILE found but not readable."
        exit 0
    fi
fi

# support for ephemeral /var/run
if [ "${PIDFILE%/*}" = "/var/run/svnserve" ] && [ ! -d ${PIDFILE%/*} ]; then
	mkdir /var/run/svnserve
	chown -h $USER:nogroup /var/run/svnserve
	chmod 700 /var/run/svnserve
fi

# Makes sure certain files/directories have the proper owner
if [ "`stat -c '%U %a' $CONFFILE 2>/dev/null`" != "$USER 600" ]; then
	chown -h $USER $CONFFILE
	chmod -f 0600 $CONFFILE
fi

case "$1" in
	start)
		if test -e $PIDFILE ; then
			pid=`cat $PIDFILE | sed -e 's/\s.*//'|head -n1`
			PIDDIR=/proc/$pid
		    if [ -d ${PIDDIR} -a  "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
				log_failure_msg "svnserve already started; not starting."
				exit 0
		    fi
		fi
	        log_begin_msg "Starting svnserve"
		if start-stop-daemon -S -o -q -p $PIDFILE -x $DAEMON -u $USER -c $USER -- $OPTIONS; then
	        	logger -t "svn[`cat $PIDFILE`]" "Starting svnserve"
			log_end_msg 0
		else
			log_end_msg 1
			exit 1
		fi
		;;
	stop)
		if ! test -e $PIDFILE ; then
			log_failure_msg "Pidfile not found! Is svnserve running?"
			exit 0
		fi
	        log_begin_msg "Stopping svnserve"
	        logger -t "svn[`cat $PIDFILE`]" "Stopping svnserve"
		if start-stop-daemon -K -o -q -p $PIDFILE -x $DAEMON -u $USER; then
			log_end_msg 0
			rm -f $PIDFILE
		else
			log_end_msg 1
			exit 1
		fi
		;;
	force-reload|restart)
	        log_begin_msg "Restarting svnserve"
		if ! start-stop-daemon -K -o -q -p $PIDFILE -x $DAEMON -u $USER; then
			log_end_msg 1
			exit 1
		fi
		sleep 1
		if start-stop-daemon -S -q -p $PIDFILE -x $DAEMON -u $USER -c $USER -- $OPTIONS; then
	        	logger -t "svn[`cat $PIDFILE`]" "Restarting svnserve"
			log_end_msg 0
		else
			log_end_msg 1
			exit 1
		fi
		;;
	try-restart)
		if test -e $PIDFILE ; then
			pid=`cat $PIDFILE | sed -e 's/\s.*//'|head -n1`
			PIDDIR=/proc/$pid
			if [ -d ${PIDDIR} -a  "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
				$0 restart
				exit 0
			fi
		fi
		test -f /etc/rc`/sbin/runlevel | cut -d' ' -f2`.d/S*svnserve* && $0 start
		;;
	awaken)
	        log_begin_msg "Awakening svnserve"
		if [ -s $PIDFILE ]; then
			start-stop-daemon -K -s 10 -q -p $PIDFILE -x $DAEMON
			log_end_msg 0
			exit 0
		else
			log_end_msg 1
			exit 1
		fi
		;;
	debug-run)
		echo "$0: Initiating debug run of system-wide svnserve service..." 1>&2
		echo "$0: script will be run in debug mode, all output to forced to" 1>&2
		echo "$0: stdout. This is not enough to debug failures that only" 1>&2
		echo "$0: happen in daemon mode." 1>&2
		echo "$0: You might want to direct output to a file, and tail -f it." 1>&2
		if [ "$2" = "strace" ]; then
			echo "$0: (running debug mode under strace. See strace(1) for options)" 1>&2
			echo "$0: WARNING: strace output may contain security-sensitive info, such as" 1>&2
			echo "$0: passwords; please clobber them before sending the strace file to a" 1>&2
			echo "$0: public bug tracking system, such as Debian's." 1>&2
		fi
		echo "$0: Stopping the service..." 1>&2
		"$0" stop
		echo "$0: exit status of service stop was: $?"
		echo "$0: RUNUSER is $USER"
		echo "$0: OPTIONS would be $OPTIONS"
		echo "$0: Starting service in nodetach mode, hit ^C (SIGINT/intr) to finish run..." 1>&2
		if [ "$2" = "strace" ] ; then
			shift
			shift
			[ $# -ne 0 ] && echo "$0: (strace options are: -tt $@)" 1>&2
			su -s /bin/sh -c "/usr/bin/strace -tt $* $DAEMON $OPTIONS " $USER <&- 2>&1
		else
			su -s /bin/sh -c "$DAEMON $OPTIONS " $USER <&- 2>&1
		fi
		echo "$0: End of service run. Exit status was: $?"
		exit 0
		;;
	*)
		log_warning_msg "Usage: /etc/init.d/svnserve {start|stop|restart|force-reload|awaken|debug-run}"
		log_warning_msg "  start - starts system-wide svnserve service"
		log_warning_msg "  stop  - stops system-wide svnserve service"
		log_warning_msg "  restart, force-reload - starts a new system-wide svnserve service"
		log_warning_msg "  awaken - tell system-wide svnserve to start a poll cycle immediately"
		log_warning_msg "  debug-run [strace [strace options...]] - start a debug run of the"
		log_warning_msg "    system-wide svnserve service, optionally running it under strace"
		exit 1
		;;
esac

exit 0