#!/bin/bash

### BEGIN INIT INFO
# Provides:         svn
# Default-Start:    2 3 4 5
# Default-Stop:     0 1 6
# Short-Description: UGCS Svn Service
# Description:       Provides svnserve service with kerberos tokens for UGCS
### END INIT INFO

SVN_USER=svn
SVN_GROUP=svn
SVN_COMMAND=/usr/bin/svnserve
SVN_ROOT=/afs/.ugcs/svn/

PIDFILE=/var/run/svnserve/svnserve.pid

KEYTAB=/etc/keytabs/svn.keytab
K5START=/usr/bin/k5start
K5START_PID=/var/run/svnserve/svnserve_k5start.pid

. /lib/lsb/init-functions

make_piddir() {
    piddir=`dirname $PIDFILE`
    if [ ! -d  $piddir ]; then
        mkdir $piddir
        chown $SVN_USER:$SVN_GROUP $piddir
    fi
}

flush_vols() {
    for user in `ls $SVN_ROOT`; do
        if [ -d $SVN_ROOT/$user ]; then
            fs flushvolume $SVN_ROOT/$user 2>&1 >/dev/null
        fi


    done
}

start_svn() {
    make_piddir
    log_daemon_msg "Starting svnserve" "svnserve"

    # This long command has svnserve nested in a k5start which is itself nested in a start-stop-daemon
    # start-stop-daemon takes care of changing the user.  It then run k5start, which creates the new PAG for svnserve and gets tokens, and calls svnserve
    # We make svnserve run in the foreground so that it stays in the k5start PAGRunning daemons alongside k5start doesn't seem to work very well
    k5start_opts="-U -f $KEYTAB -b -K 10 -l 10h -p $K5START_PID -q -c $PIDFILE -t"
    start_stop_daemon_opts="-p $PIDFILE -g $SVN_GROUP -c $SVN_USER"
    svn_opts="-r $SVN_ROOT -d --foreground"
    start-stop-daemon $start_stop_daemon_opts --exec $K5START --start -- $k5start_opts -- $SVN_COMMAND $svn_opts
    log_end_msg $?

}

stop_svn() {
    log_daemon_msg "Stopping svnserve"
    start-stop-daemon -p $PIDFILE --exec $SVN_COMMAND --stop --oknodo
    rm -rf $PIDFILE
    log_end_msg $?
}

case "$1" in
    start)
        start_svn
    ;;
    stop)
        stop_svn
    ;;
    restart)
        stop_svn
        start_svn
    ;;
    *)
        echo "Usage: /etc/init.d/svn {start|stop|restart}"
        exit 1
esac