#! /bin/sh
# Copyright (c) 1995-2002 SuSE Linux AG, Nuernberg, Germany.
# All rights reserved.
#
# Author: Kurt Garloff <feedback@suse.de>
#
# /etc/init.d/avanti2
#   and its symbolic link
# /(usr/)sbin/rcavanti2
#
# Template system startup script for some example service/daemon avanti2
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
# 
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux (UL) based Linux distributions. If you want to base your 
# script on this template and ensure that it works on non UL based LSB 
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
#
### BEGIN INIT INFO
# Provides:          avanti2
# Required-Start:    $syslog $remote_fs
# X-UnitedLinux-Should-Start: $time ypbind
# Required-Stop:     $syslog $remote_fs
# X-UnitedLinux-Should-Stop: $time ypbind
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: avanti server for allegro databases
# Description:       avanti server for access to databases under allegro-C
#	(TU Braunschweig, http://www.allegro-c.de), listening on 4949 TCP
### END INIT INFO
# 
# Any extensions to the keywords given above should be preceeded by 
# X-VendorTag- (X-UnitedLinux- for us) according to LSB.
# 
# Notes on Required-Start/X-UnitedLinux-Should-Start:
# * There are two different issues that are solved by Required-Start
#    and X-UnitedLinux-Should-Start
# (a) Hard dependencies: This is used by the runlevel editor to determine
#     which services absolutely need to be started to make the start of
#     this service make sense. Example: nfsserver should have
#     Required-Start: portmap
#     Also, required services are started before the dependent ones.
#     The runlevel editor will warn about such missing hard dependencies
#     and suggest enabling. During system startup, you may expect an error,
#     if the dependency is not fulfilled.
# (b) Specifying the init script ordering, not real (hard) dependencies.
#     This is needed by insserv to determine which service should be
#     started first (and at a later stage what services can be started
#     in parallel). The tag X-UnitedLinux-Should-Start: is used for this.
#     It tells, that if a service is available, it should be started
#     before. If not, never mind.
# * When specifying hard dependencies or ordering requirements, you can 
#   use names of services (contents of their Provides: section)
#   or pseudo names starting with a $. The following ones are available
#   according to LSB (1.1):
#	$local_fs		all local file systems are mounted
#				(most services should need this!)
#	$remote_fs		all remote file systems are mounted
#				(note that /usr may be remote, so
#				 many services should Require this!)
#	$syslog			system logging facility up
#	$network		low level networking (eth card, ...)
#	$named			hostname resolution available
#	$netdaemons		all network daemons are running
#   The $netdaemons pseudo service has been removed in LSB 1.2.
#   For now, we still offer it for backward compatibility.
#   These are new (LSB 1.2):
#	$time			the system time has been set correctly	
#	$portmap		SunRPC portmapping service available
#   UnitedLinux extensions:
#	$ALL			indicates that a script should be inserted
#				at the end
# * The services specified in the stop tags 
#   (Required-Stop/X-UnitedLinux-Should-Stop)
#   specify which services need to be still running when this service
#   is shut down. Often the entries there are just copies or a subset 
#   from the respective start tag.
#
# Note on runlevels: 
# 0 - halt/poweroff 			6 - reboot
# 1 - single user			2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
# 
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.2.0/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.


AVANTI_ROOT=/opt/avanti
AVANTI_JAIL=/var/lib/avanti/jail

AVANTI_OUT=/var/log/avanti.out
AVANTI_PID=/var/run/avanti2.pid
AVANTI_CONF=/etc/avanti.conf
# relative to AVANTI_ROOT
AVANTI_BIN=/bin/avanti

# Check for missing binaries (stale symlinks should not happen)
test -x $AVANTI_ROOT/bin/avanti || exit 5

# Check for existence of needed config file and read it
test -r /etc/sysconfig/avanti2 || exit 6
. /etc/sysconfig/avanti2


if test "$AVANTI_RUN_CHROOTED" = "yes"; 
then
	CHROOT_PREFIX="-c $AVANTI_JAIL"
	AVANTI_BIN=/bin/avanti
	AVANTI_OUT=${AVANTI_JAIL}${AVANTI_OUT}
else
	CHROOT_PREFIX=""
	AVANTI_BIN=$AVANTI_ROOT/bin/avanti
	cp -a $AVANTI_CONF $AVANTI_ROOT/etc
fi


function prepare_chroot
{
#	test -d $AVANTI_JAIL/dev || mkdir $AVANTI_JAIL/dev
#	test -f $AVANTI_JAIL/dev/null || mknod c 1 3 $AVANTI_JAIL/dev/null

        for configfile in $AVANTI_CONF /etc/localtime $AVANTI_CONF_INCLUDE_FILES ; do
                test -d $AVANTI_JAIL/${configfile%/*} || mkdir -p $AVANTI_JAIL/${configfile%/*}
                cp -a $configfile $AVANTI_JAIL/${configfile%/*}
        done
        for avantiessential in /etc/uif{0,s}GER ; do
                test -d $AVANTI_JAIL/${avantiessential%/*} || mkdir -p $AVANTI_JAIL/${avantiessential%/*}
                cp -a $AVANTI_ROOT/$avantiessential $AVANTI_JAIL/${avantiessential%/*}
        done

	for avantibin in /bin/{avanti,avanti-cl}; do
		test -f $AVANTI_JAIL/$avantibin || cp $AVANTI_ROOT/$avantibin $AVANTI_JAIL/${avantibin%/*}
	done
	if ! test -f $AVANTI_JAIL/bin/ash;
	then
		cp /bin/ash $AVANTI_JAIL/bin
		ln -s ash $AVANTI_JAIL/bin/sh
	fi

        for libfile in `ldd $AVANTI_JAIL/bin/* | awk -F '[>(]' '{print $2}'`; do
                test -d $AVANTI_JAIL/${libfile%/*} || mkdir -p $AVANTI_JAIL/${libfile%/*}
		test -f $AVANTI_JAIL/$libfile || cp $libfile $AVANTI_JAIL/${libfile%/*}
	done

	if test "$AVANTI_EXTRA_MOUNT" != "";
	then
		test -d $AVANTI_JAIL/home || mkdir $AVANTI_JAIL/home
		(mount | grep $AVANTI_JAIL/home) || mount --bind $AVANTI_EXTRA_MOUNT $AVANTI_JAIL/home
		sed -e "s=$AVANTI_EXTRA_MOUNT/=/home/=g" $AVANTI_CONF > ${AVANTI_JAIL}${AVANTI_CONF}
	fi

	if ! test -d $AVANTI_JAIL/var/log/avanti ;
	then
		mkdir -m 775 -p $AVANTI_JAIL/var/log/avanti
		chgrp $AVANTI_GROUP $AVANTI_JAIL/var/log/avanti
	fi
}


# Source LSB init functions
# providing start_daemon, killproc, pidofproc, 
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions

# 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     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
#      rc_splash arg    sets the boot splash screen to arg (if active)
. /etc/rc.status

# 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       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

case "$1" in
    start)
	echo -n "Starting avanti2 "
	if [ -f $AVANTI_PID ]
	then
        	rm $AVANTI_PID
	fi
	test "$AVANTI_RUN_CHROOTED" = "yes" && prepare_chroot
	## Start daemon with startproc(8). If this fails
	## the return value is set appropriately by startproc.
	echo startproc -e $CHROOT_PREFIX -l $AVANTI_OUT -t5 -u $AVANTI_USER -g $AVANTI_GROUP $AVANTI_BIN -daemon
	/sbin/startproc -e $CHROOT_PREFIX -l $AVANTI_OUT -t5 -u $AVANTI_USER -g $AVANTI_GROUP $AVANTI_BIN -daemon
	# Remember status and be verbose
	rc_status -v
	/sbin/checkproc -v $CHROOT_PREFIX $AVANTI_BIN > $AVANTI_PID
	;;
    stop)
	echo -n "Shutting down avanti2 "
	## Stop daemon with killproc(8) and if this fails
	## killproc sets the return value according to LSB.

	/sbin/killproc $CHROOT_PREFIX -t5 -INT $AVANTI_BIN

	# Remember status and be verbose
	rc_status -v
	;;
    try-restart)
	## Do a restart only if the service was active before.
	## Note: try-restart is not (yet) part of LSB (as of 1.2)
	$0 status >/dev/null &&  $0 restart

	# Remember status and be quiet
	rc_status
	;;
    restart)
	## Stop the service and regardless of whether it was
	## running or not, start it again.
	$0 stop
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    force-reload)
	## Signal the daemon to reload its config. Most daemons
	## do this on signal 1 (SIGHUP).
	## If it does not support it, restart.

	echo -n "Reload service avanti2 "
	## if it supports it:
	/sbin/killproc $CHROOT_PREFIX -t5 -HUP $AVANTI_BIN
	#touch $AVANTI_PID
	rc_status -v

	## Otherwise:
	#$0 stop  &&  $0 start
	#rc_status
	;;
    reload)
	## Like force-reload, but if daemon does not support
	## signaling, do nothing (!)

	# If it supports signaling:
	echo -n "Reload service avanti2 "
	test "$AVANTI_RUN_CHROOTED" = "yes" && prepare_chroot
	/sbin/killproc $CHROOT_PREFIX -t5 -HUP $AVANTI_BIN
	rc_status -v
	/sbin/checkproc -v $CHROOT_PREFIX $AVANTI_BIN > $AVANTI_PID
	
	## Otherwise if it does not support reload:
	#rc_failed 3
	#rc_status -v
	;;
    status)
	echo -n "Checking for service avanti2 "
	## Check status with checkproc(8), if process is running
	## checkproc will return with exit status 0.

	# Return value is slightly different for the status command:
	# 0 - service up and running
	# 1 - service dead, but /var/run/  pid  file exists
	# 2 - service dead, but /var/lock/ lock file exists
	# 3 - service not running (unused)
	# 4 - service status unknown :-(
	# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
	
	# NOTE: checkproc returns LSB compliant status values.
	/sbin/checkproc $CHROOT_PREFIX $AVANTI_BIN
	# NOTE: rc_status knows that we called this init script with
	# "status" option and adapts its messages accordingly.
	rc_status -v
	;;
    probe)
	## Optional: Probe for the necessity of a reload, print out the
	## argument to this init script which is required for a reload.
	## Note: probe is not (yet) part of LSB (as of 1.2)

	test /etc/avanti2/avanti2.conf -nt $AVANTI_PID && echo reload
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit
