#!/bin/sh
#
# dirsrv-snmp    This starts and stops dirsrv-snmp
#
# chkconfig:   - 22 78
# description: 389 Directory Server SNMP Subagent
# processname: ldap-agent-bin
# config:   /etc/dirsrv/config/ldap-agent.conf
# pidfile:     /var/run/ldap-agent.pid
#

# Source function library.
if [ -f /etc/rc.d/init.d/functions ] ; then
. /etc/rc.d/init.d/functions
fi
# Source networking configuration.
if [ -f /etc/sysconfig/network ] ; then
. /etc/sysconfig/network
fi

# Check that networking is up.
if [ "${NETWORKING}" = "no" ]
then
    echo "Networking is down"
    if [ "$1" = "status" ]; then
        # exit code 4 means unknown status for status action
        exit 4
    else
        # exit code 1 means unspecified error for non-status actions
        exit 1
    fi
fi

# figure out which echo we're using
ECHO_N=`echo -n`

# some shells echo cannot use -n - linux echo by default cannot use \c
echo_n()
{
    if [ "$ECHO_N" = '-n' ] ; then
        echo "$*\c"
    else
        echo -n "$*"
    fi
}

# failure and success are not defined on some platforms
type failure > /dev/null 2>&1 || {
failure()
{
    echo_n " FAILED"
}
}

type success > /dev/null 2>&1 || {
success()
{
    echo_n " SUCCESS"
}
}

baseexec="ldap-agent"
exec="/usr/sbin/$baseexec"
processname="ldap-agent-bin"
prog="dirsrv-snmp"
pidfile="/var/run/ldap-agent.pid"
configfile="/etc/dirsrv/config/ldap-agent.conf"


# Check if ldap-agent exists
if [ ! -f $exec ]; then
    if [ "$1" = "status" ]; then
        # exit code 4 means unknown status for status action
        exit 4
    else
        # exit code 5 means program is not installed for non-status actions
        exit 5
    fi
fi


umask 077

start() {
    echo_n "Starting $prog: "
    ret=0
    subagent_running=0
    subagent_started=0

    # the subagent creates a pidfile and writes
    # the pid to it when it is fully started.
    if [ -f $pidfile ]; then
        pid=`cat $pidfile`
        name=`ps -p $pid | tail -1 | awk '{ print $4 }'`
        if kill -0 $pid && [ $name = "$processname" ]; then
            echo_n " already running"
            success; echo
            subagent_running=1
        else
            echo " not running, but pid file exists"
            echo_n "    ... attempting to start anyway"
        fi
    fi

    if [ $subagent_running -eq 0 ] ; then
        rm -f $pidfile
        $exec $configfile > /dev/null 2>&1
        if [ $? -eq 0 ]; then
            subagent_started=1 # well, perhaps not running, but started ok
        else
            failure; echo
            ret=1
        fi
    fi
    # ok, if we started the subagent successfully, let's see
    # if it is really running and ready to serve requests.
    if [ $subagent_started -eq 1 ] ; then
        loop_counter=1
        # wait for 10 seconds
        max_count=10
        while test $loop_counter -le $max_count ; do
            loop_counter=`expr $loop_counter + 1`
            if test ! -f $pidfile ; then
                if kill -0 $pid > /dev/null 2>&1 ; then
                    sleep 1
                else
                    break
                fi
            else
                pid=`cat $pidfile`
                break
            fi
        done
        if kill -0 $pid > /dev/null 2>&1 && test -f $pidfile ; then
            success; echo
        else
            failure; echo
            ret=1
        fi
    fi

    exit $ret
}

stop() {
    echo_n "Shutting down $prog: "
    if [ -f $pidfile ]; then
        pid=`cat $pidfile`
        subagent_stopped=0
        if kill -0 $pid > /dev/null 2>&1 ; then
            kill $pid
            if [ $? -eq 0 ]; then
                subagent_stopped=1
            else
                failure; echo
            fi
        else
            echo_n " subagent not running"
            failure; echo
        fi
        if [ $subagent_stopped -eq 1 ] ; then
            loop_counter=1
            # wait for 10 seconds
            max_count=10
            while test $loop_counter -le $max_count; do
                loop_counter=`expr $loop_counter + 1`
                if kill -0 $pid > /dev/null 2>&1 ; then
                    sleep 1
                else
                    if test -f $pidfile ; then
                        rm -f $pidfile
                    fi
                    break
                fi
            done
            if test -f $pidfile ; then
                failure; echo
            else
                success; echo
                rm -f $pidfile
            fi
        fi
    else
        echo_n " subagent already stopped"
        failure; echo
    fi
}

reload() {
    stop
    start
}

restart() {
    stop
    start
}

condrestart() {
    if [ -f $pidfile ]; then
        pid=`cat $pidfile`
        name=`ps -p $pid | tail -1 | awk '{ print $4 }'`
        if kill -0 $pid && [ $name = "$processname" ]; then
            restart
        fi
    fi
}

status() {
     ret=0
     if [ -f $pidfile ]; then
         pid=`cat $pidfile`
         if kill -0 $pid > /dev/null 2>&1 ; then
             echo "$prog (pid $pid) is running..."
         else
            echo "$prog dead but pid file exists"
            ret=1
         fi
     else
         echo "$prog is stopped"
         ret=3
     fi
     exit $ret
}


case "$1" in
    start|stop|restart|reload|condrestart|status)
        $1
        ;;
    *)
        echo Unknown command $1
        echo "Usage: $0 {start|stop|restart|reload|condrestart|status}"
        exit 2
esac