Package: univention-net-installer-daemon

Architecture: all

Depends: python-univention

Description: UCS - automatic profile server installation

 This package contains a net installer daemon which removes the reinstallation

 flag in the ldap directory.

 .

 This package is part of Univention Corporate Server (UCS),

 an integrated, directory driven solution for managing

 corporate environments. For more information about UCS,

 refer to: http://www.univention.de/

#!/bin/sh

# Univention Net Installer Daemon

#  init script

#

# Copyright 2010 Univention GmbH

#

# http://www.univention.de/

#

# All rights reserved.

#

# The source code of this program is made available

# under the terms of the GNU Affero General Public License version 3

# (GNU AGPL V3) as published by the Free Software Foundation.

#

# Binary versions of this program provided by Univention to you as

# well as other copyrighted, protected or trademarked materials like

# Logos, graphics, fonts, specific documentations and configurations,

# cryptographic keys etc. are subject to a license agreement between

# you and Univention and not subject to the GNU AGPL V3.

#

# In the case you use this program under the terms of the GNU AGPL V3,

# the program is provided in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General Public

# License with the Debian GNU/Linux or Univention distribution in file

# /usr/share/common-licenses/AGPL-3; if not, see

# <http://www.gnu.org/licenses/>.

#

### BEGIN INIT INFO

# Provides:          univention-net-installer-daemon

# Required-Start:    $network $local_fs

# Required-Stop:

# Should-Start:      $named

# Should-Stop:

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description: Univention Net Installer Daemon

# Description:       Service to reset the reinstall flag

### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

DAEMON=/usr/sbin/univention-net-installer-daemon  # Introduce the server's location here

NAME="univention-net-installer-daemon"              # Introduce the short server's name here

DESC="Univention Net Installer Daemon" # Introduce a short description here

LOGDIR=/var/log/univention # Log directory to use

PIDFILE=/var/run/$NAME.pid

test -x "$DAEMON" || exit 0

. /lib/lsb/init-functions

# Default options, these can be overriden by the information

# at /etc/default/$NAME

DAEMON_OPTS="-p 49173 -D -d 1"        # Additional options given to the server

DIETIME=10              # Time to wait for the server to die, in seconds

                        # If this value is set too low you might not

                        # let some servers to die gracefully and

                        # 'restart' will not work

STARTTIME=2            # Time to wait for the server to start, in seconds

                        # If this value is set each time the server is

                        # started (on start or restart) the script will

                        # stall to try to determine if it is running

                        # If it is not set and the server takes time

                        # to setup a pid file the log message might 

                        # be a false positive (says it did not start

                        # when it actually did)

LOGFILE="$LOGDIR/$NAME.log"  # Server logfile

# Include defaults if available

if [ -f "/etc/default/$NAME" ] ; then

	. "/etc/default/$NAME"

fi

set -e

running_pid() {

# Check if a given process pid's cmdline matches a given name

    pid=$1

    name=$2

    [ -z "$pid" ] && return 1

    [ ! -d /proc/$pid ] &&  return 1

    cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|sed -ne 2p |cut -d : -f 1`

    # Is this the expected server

    [ "$cmd" != "$name" ] &&  return 1

    return 0

}

running() {

# Check if the process is running looking at /proc

    # No pidfile, probably no daemon present

    [ ! -f "$PIDFILE" ] && return 1

    pid=`cat $PIDFILE`

    running_pid $pid "$DAEMON" || return 1

    return 0

}

start_server() {

	start_daemon -p "$PIDFILE" "$DAEMON" $DAEMON_OPTS

	errcode=$?

	return $errcode

}

stop_server() {

	killproc -p "$PIDFILE" "$DAEMON"

	errcode=$?

	return $errcode

}

reload_server() {

    [ ! -f "$PIDFILE" ] && return 1

    pid=pidofproc $PIDFILE # This is the daemon's pid

    # Send a SIGHUP

    kill -1 $pid

    return $?

}

force_stop() {

# Force the process to die killing it manually

	[ ! -e "$PIDFILE" ] && return

	if running ; then

		kill -15 $pid

	# Is it really dead?

		sleep "$DIETIME"s

		if running ; then

			kill -9 $pid

			sleep "$DIETIME"s

			if running ; then

				echo "Cannot kill $NAME (pid=$pid)!"

				exit 1

			fi

		fi

	fi

	rm -f "$PIDFILE"

}

case "$1" in

  start)

	log_daemon_msg "Starting $DESC " "$NAME"

        # Check if it's running first

        if running ;  then

            log_progress_msg "apparently already running"

            log_end_msg 0

            exit 0

        fi

        if start_server ; then

            # NOTE: Some servers might die some time after they start,

            # this code will detect this issue if STARTTIME is set

            # to a reasonable value

            [ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time 

            if  running ;  then

                # It's ok, the server started and is running

                log_end_msg 0

            else

                # It is not running after we did start

                log_end_msg 1

            fi

        else

            # Either we could not start it

            log_end_msg 1

        fi

	;;

  stop)

        log_daemon_msg "Stopping $DESC" "$NAME"

        if running ; then

            # Only stop the server if we see it running

			errcode=0

            stop_server || errcode=$?

            log_end_msg $errcode

        else

            # If it's not running don't do anything

            log_progress_msg "apparently not running"

            log_end_msg 0

            exit 0

        fi

        ;;

  force-stop)

        # First try to stop gracefully the program

        "$0" stop

        if running; then

            # If it's still running try to kill it more forcefully

            log_daemon_msg "Stopping (force) $DESC" "$NAME"

			errcode=0

            force_stop || errcode=$?

            log_end_msg $errcode

        fi

	;;

  restart|force-reload)

        log_daemon_msg "Restarting $DESC" "$NAME"

		errcode=0

        stop_server || errcode=$?

        # Wait some sensible amount, some server need this

        [ -n "$DIETIME" ] && sleep $DIETIME

        start_server || errcode=$?

        [ -n "$STARTTIME" ] && sleep $STARTTIME

        running || errcode=$?

        log_end_msg $errcode

	;;

  status)

        log_daemon_msg "Checking status of $DESC" "$NAME"

        if running ;  then

            log_progress_msg "running"

            log_end_msg 0

        else

            log_progress_msg "apparently not running"

            log_end_msg 1

            exit 1

        fi

        ;;

  # Use this if the daemon cannot reload

  reload)

        log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"

        log_warning_msg "cannot re-read the config file (use restart)."

        ;;

  *)

	N=/etc/init.d/$NAME

	echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2

	exit 1

	;;

esac

exit 0

# vim:set ft=sh:

univention-server-installer (4.1.2-1) unstable; urgency=low

  * Set STARTTIME in daemon init script to two seconds.

    Ticket #2010090610002701 and Bug #1156

 -- Stefan Gohmann <gohmann@univention.de>  Tue, 14 Sep 2010 14:40:18 +0200

univention-server-installer (4.1.1-1) unstable; urgency=low

  * Add a simple network daemon which removes the reinstall flag, for

    example by running the following command:

     echo $hostname |  netcat $ldap_master  49173

    The daemon will be installed on the net install server by default

    but the package (univention-net-installer-daemon) can also be

    installed on the DC Master.

    Ticket #2010090610002701 and Bug #1156

 -- Stefan Gohmann <gohmann@univention.de>  Thu, 09 Sep 2010 08:51:41 +0200

	install -m0755 univention-net-installer-daemon debian/univention-net-installer-daemon/usr/sbin/univention-net-installer-daemon

	dh_installinit

usr/sbin/

#!/usr/bin/python2.4

# -*- coding: utf-8 -*-

#

# Univention Net Installer Daemon

#  UVMM handler

#

# Copyright 2010 Univention GmbH

#

# http://www.univention.de/

#

# All rights reserved.

#

# The source code of this program is made available

# under the terms of the GNU Affero General Public License version 3

# (GNU AGPL V3) as published by the Free Software Foundation.

#

# Binary versions of this program provided by Univention to you as

# well as other copyrighted, protected or trademarked materials like

# Logos, graphics, fonts, specific documentations and configurations,

# cryptographic keys etc. are subject to a license agreement between

# you and Univention and not subject to the GNU AGPL V3.

#

# In the case you use this program under the terms of the GNU AGPL V3,

# the program is provided in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General Public

# License with the Debian GNU/Linux or Univention distribution in file

# /usr/share/common-licenses/AGPL-3; if not, see

# <http://www.gnu.org/licenses/>.

import sys, os, time

import signal

import socket

import univention.uldap

import univention.debug as ud

from optparse import OptionParser

def createDaemon(options):

	try:

		pid = os.fork()

	except OSError, e:

		print 'Daemon Mode Error: %s' % e.strerror

	if (pid == 0):

		os.setsid()

		signal.signal(signal.SIGHUP, signal.SIG_IGN)

		try:

			pid = os.fork()

		except OSError, e:

			print 'Daemon Mode Error: %s' % e.strerror

		if (pid == 0):

			os.chdir("/")

			os.umask(0)

		else:

			pf=open(options.pidfile, 'w+')

			pf.write(str(pid))

			pf.close()

			os._exit(0)

	else:

		os._exit(0)

	try:

		maxfd = os.sysconf("SC_OPEN_MAX")

	except (AttributeError, ValueError):

		maxfd = 256       # default maximum

	for fd in range(0, maxfd):

		try:

			os.close(fd)

		except OSError:   # ERROR (ignore)

			pass

	os.open("/dev/null", os.O_RDONLY)

	os.open("/dev/null", os.O_RDWR)

	os.open("/dev/null", os.O_RDWR)

def getLDAPConnection():

	# TODO: check for an alternative binddn

	if os.path.exists('/etc/ldap.secret'):

		lo = univention.uldap.getAdminConnection()

	else:

		lo = univention.uldap.getMachineConnection()

	return lo

if __name__ == '__main__':

	parser = OptionParser(usage='usage: %prog [options] command')

	parser.add_option('-p', '--port',

			action='store', dest='port', default="49173", type='int',

			help='Port for the daemon [%(default)s]' % {'default':'%default'})

	parser.add_option('-P', '--pidfile',

			action='store', dest='pidfile', default="/var/run/univention-net-installer-daemon.pid",

			help='Path to the pid-file [%(default)s]' % {'default':'%default'})

	parser.add_option('-D', '--daemon',

			action='store_true', dest='daemonize', default=False,

			help='Fork into background')

	parser.add_option('-d', '--debug',

			action='store', dest='debug_level', default="1", type='int',

			help='Debug level (0 to 4)')

	(options, arguments) = parser.parse_args()

	ud.init('/var/log/univention/net-installer-daemon.log', 1, 0)

	ud.set_level( ud.LDAP, options.debug_level)

	if options.daemonize:

		createDaemon(options)

	HOST = socket.gethostbyname(socket.gethostname())

	size = 1024 # max hostname length

	s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

	s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

	s.bind((HOST,options.port))

	s.listen(1) 

	while True:

		client, address = s.accept()

		data = client.recv(size)

		if data:

			data=data.strip()

			try:

				lo = getLDAPConnection()

				result = lo.search(filter='(&(objectClass=univentionHost)(cn=%s)(univentionServerReinstall=1))' % data)

				if len(result) == 0:

					ud.debug(ud.LDAP, ud.ERROR, 'The computer object %s was not found. Please remove the reinstall flag manually.' % data)

				else:

					for r in result:

						lo.modify(r[0], [('univentionServerReinstall', '1', '0')])

						ud.debug(ud.LDAP, ud.PROCESS, 'The computer object %s (%s) was sucessful modified. ' % (data, r[0]))

			except:

				time.sleep(1)

				# for example bad search filter

				pass

		client.close()