#! /bin/sh
# Copyright (c) 1996-2002 SuSE GmbH Nuernberg, Germany.  All rights reserved.
#
# Author: Christopher Mahmood <ckm+snmp@suse.de>, Remo Behn <ray+snmp@suse.de>
#
# /etc/init.d/snmpd
#
### BEGIN INIT INFO
# Provides:            net-snmp snmp
# Required-Start:      $remote_fs
# Required-Stop:
# Default-Start:       2 3 5
# Default-Stop:        0 1 6
# Description:         Net-SNMP snmpd
# Short-Description:   Net-SNMP snmpd
### END INIT INFO

SNMPD=/usr/sbin/snmpd
AGENTDIR=/usr/lib/net-snmp/agents
SNMPDCONF=/etc/snmp/snmpd.conf

test -x $SNMPD || exit 5

# Check for existence of needed config file and read it
SNMPD_CONFIG=/etc/sysconfig/net-snmp
test -r $SNMPD_CONFIG || { echo "$SNMPD_CONFIG not existing";
	if [ "$1" = "stop" ]; then exit 0;
	else exit 6; fi; }

# Read config	
. $SNMPD_CONFIG

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     ditto but be verbose in local rc status
#      rc_status -v -r  ditto and clear the local rc status
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num><num>
#      rc_reset         clear local rc status (overall remains)
#      rc_exit          exit appropriate to overall rc status
. /etc/rc.status

# First reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - insufficient privilege
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signalling is not supported) are
# considered a success.

# check whether to enable agentx support and get list of installed
# agents
get_agents()
{
  agents=
  agentargs=''
  for agent in $AGENTDIR/*; do
    test -x $agent || continue
    agents="$agents $agent"
    agentargs="-x /var/run/agentx/master"
  done
} 

case "$1" in
    start)
	echo -n "Starting snmpd"
        #
        # do not even try to start if the log file is (2GB-1MB) big.
        # the snmpd doesnt handle LFS properly
        #
        SNMPD_LOGFILE="/var/log/net-snmpd.log"
        if [ -e "$SNMPD_LOGFILE" ] ; then
        SNMPD_SIZE_LOGFILE="$(stat -c "%s" $SNMPD_LOGFILE)"
        SNMPD_SIZE_MAX="1073741824"
        if [ $SNMPD_SIZE_LOGFILE -gt $SNMPD_SIZE_MAX ] ; then
            echo -e "\n\"$SNMPD_LOGFILE\" was to large. Running 'logrotate' for net-snmp." >&2
            /usr/sbin/logrotate /etc/logrotate.d/net-snmp
        fi # if [ $SNMPD_SIZE_LOGFILE -gt $SNMPD_SIZE_MAX ] ; then
        fi # if [ -e "$SNMPD_LOGFILE" ] ; then
	get_agents
	# Do not add -c /etc/snmpd.conf, since it is already loaded by default.
	if [ $SNMPDCONF = "/etc/snmp/snmpd.conf" ]; then
	  SNMPDCONF=""
	else
	  SNMPDCONF="-c $SNMPDCONF"
	fi
	case "${SNMPD_USE_SMUX:-yes}" in
	  [Nn][Oo])
	    SNMPDNOSMUX="-I -smux"
	  ;;
	esac
	case "${SNMPD_LOG_SUCCESSFUL_CONNECTIONS:-yes}" in
	  [Nn][Oo])
	    SNMPDNOTCPWRAPPERLOG="--dontLogTCPWrappersConnects"
	  ;;
	esac
	startproc $SNMPD $SNMPDCONF -r -A -LF ${SNMPD_LOGLEVEL:-d} $SNMPD_LOGFILE -p /var/run/snmpd.pid $agentargs $SNMPDNOSMUX $SNMPDNOTCPWRAPPERLOG
	rc_status -v
	rc_reset

	# start all agents
	if test -n $agents; then
	  usleep 300000
	  for agent in $agents; do
            echo -en "\tStarting `basename $agent`"
	    startproc -t1 $agent 
	    rc_status -v ; rc_reset
          done
	fi
	;;
    stop)
	echo -n "Shutting down snmpd:"
	killproc -TERM $SNMPD
	rc_status -v ; rc_reset
	# we also need to make sure all agents die
	if test -n $agents; then
          for agent in $AGENTDIR/*; do
           test -x $agent || continue
	   echo -ne "\tShutting down `basename $agent`:"
           killproc $agent
	   rc_status -v ; rc_reset
        done
	fi
	;;
    try-restart)
	$0 status >/dev/null &&  $0 restart
	rc_status
	;;
    restart)
	$0 stop
	$0 start
	rc_status
	;;
    force-reload)
	echo -n "Reload service snmpd:"
	killproc -HUP $SNMPD
	rc_status -v
	;;
    reload)
	echo -n "Reload service snmpd:"
	killproc -HUP $SNMPD
	rc_status -v
	;;
    status)
	echo -n "Checking for service snmpd:"
	checkproc $SNMPD
	rc_status -v
	get_agents
	if test -n "$agents"; then
	  echo -e "Checking for agents:"

	  for agent in $agents; do
            echo -en "\t`basename $agent`"
            checkproc $agent
            rc_status -v
      done
	fi
	;;
    *)
	echo "Usage: $0 {start|stop|try-restart|restart|force-reload|reload|status}"
	exit 1
	;;
esac
rc_exit