#!/bin/sh
#
# start -- start up configured conmux servers on this host.
#
# (C) Copyright IBM Corp. 2004, 2005, 2006
# Author: Andy Whitcroft <andyw@uk.ibm.com>
#
# The Console Multiplexor is released under the GNU Public License V2
#
# chkconfig: - 95 5
# description: The Conmux daemon is used for console management.
#

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

if [ -f ~/.gmm.conf ]; then
	. ~/.gmm.conf
fi

DAEMON=conmuxd
PROG=/usr/sbin/$DAEMON
CONMUX=${CONMUX:-/usr/share/conmux}
PATH=$CONMUX/drivers:$CONMUX/helpers:$PATH
LOCK=/var/lock/subsys/conmux
CFGDIR=/etc/conmux
PIDDIR=/var/run/conmux

RETVAL="0"

[ -x "$PROG" ] || exit 0

cmd="$1"

existing=""
for i in $PIDDIR/*.pid
do
  n=${i%.pid}
  n=${n#$PIDDIR/}

  if [ "$n" != "*" ]; then
    existing="$existing $n"
  fi
done

start_component() {
  local component="$1"
  local pidfile="$PIDDIR/$component.pid"

  shift

  # Determine whether it is already running ... if so leave it be.
  if [ -f "$pidfile" ]; then
    if kill -0 `cat "$pidfile"` 2>/dev/null; then
      return 1
    fi
  fi

  case "$component" in
    registry) echo -n "  starting $component..." ;;
    *)        echo -n "  connecting to $component..." ;;
  esac
  "$@" >"/var/log/conmux/$component.log" 2>&1 &
  if [ "$?" -eq 0 ]; then
    echo "$!" >"$pidfile"
    success; echo
    return 0
  else
    failure; echo
    return 1
  fi
}

stop_component() {
  local component="$1"
  local pidfile="$PIDDIR/$component.pid"

  case "$component" in
    registry) echo -n "  stopping $component..." ;;
    *)        echo -n "  disconnecting $component..." ;;
  esac
  # Kill it and clear up
  kill -HUP `cat "$pidfile"` 2>/dev/null
  if [ "$?" -eq 0 ]; then
    rm -f "$pidfile"
    success; echo
    return 0
  else
    failure; echo
    return 1
  fi
}

start_conmuxd(){
  autoboot=""
  [ -f $CFGDIR/registry ] || touch $CFGDIR/registry
  start_component registry /usr/sbin/conmux-registry 63000 $CFGDIR/registry
  if [ "$?" -eq 0 ]; then
    sleep 1
  fi
  started="registry"
  pause=0

  for i in $CFGDIR/*.cf
  do
    n=${i%.cf}
    n=${n#$CFGDIR/}
    if [ "$n" != "*" ]; then
      if [ -f "/var/run/conmux/$n.cf" ]; then
        if ! cmp -s "$i" "/var/run/conmux/$n.cf"; then
          stop_component $n
        fi
      fi
      start_component $n $PROG $i
      if [ "$?" -eq 0 ]; then
        pause=1
      fi
      started="$started $n"

      # Preserve the orginal configuration file.
      cp "$i" "/var/run/conmux/$n.cf"
      if grep -q TYPE:numaq "$i"; then
        autoboot="$autoboot $n"
      fi
      for i in `grep FLAGS: "$i"`; do
        case "$i" in
          \#|FLAGS:)	;;
          *)		autoboot="$autoboot $n/$i" ;;
        esac
      done
    fi
  done
  if [ "$pause" -eq 1 ]; then
    sleep 1
  fi
  for nh in $autoboot
  do
    name="${nh%/*}"
    helper="${nh#*/}"

    mn="${name#abat-}"
    start_component $name-$helper-helper /usr/bin/conmux-attach $mn $helper-helper
    started="$started $name-$helper-helper"
  done
  return 0
}

case "$1" in
  start)
        echo "Starting ConMux Daemon: "
        for i in $existing
        do
          case " $started " in
            *\ $i\ *)	;;
            *) stop_component "$i" ;;
          esac
        done
        start_conmuxd
        RETVAL=$?
        echo -n "ConMux Daemon Started: "
        [ $RETVAL -eq 0 ] && success && touch $LOCK
        echo
        ;;
  stop)
        echo "Stopping ConMux Daemon: "
        for i in $existing
        do
          case " $started " in
            *\ $i\ *)	;;
            *) stop_component "$i" ;;
          esac
        done
        RETVAL=$?
        echo -n "ConMux Daemon Stopped: "
        [ $RETVAL -eq 0 ] && success && rm -f $LOCK
        echo
        ;;
  status)
        if [ -e $PIDDIR/registry.pid ]; then
          regpid=$(cat $PIDDIR/registry.pid)
          ps -p $regpid >/dev/null 2>&1
          RETVAL=$?
          if [ "$RETVAL" -eq "0" ]; then
            echo "Conmux registry (pid $regpid) is running.."
            echo "Individual console connections: "
            for n in $existing
            do
              mn="${n#abat-}"
              case "$n" in
                registry|*-helper)
                  ;;
                *)
                  status=`conmux -s $mn`
                  echo "  $mn $status"
                  ;;
              esac
            done
          else
            echo "Conmux is not running, but a stale pid file exists."
            RETVAL=1
          fi
        else
          echo "Conmux is not running."
          RETVAL=1
        fi
        ;;
  restart|reload)
        $0 status >/dev/null && $0 stop
        $0 start
        RETVAL=$?
        echo
        ;;
  condrestart)
        [ ! -f $LOCK ] || $0 restart
        ;;
  *)
        echo "Usage: $0 {start|stop|status|restart|reload|condrestart}"
        exit 1
        ;;
esac

exit $RETVAL