#! /bin/sh
# Copyright (c) 1997-2000 SuSE GmbH Nuernberg, Germany.
# Copyright (c) 2002 SuSE Linux AG Nuernberg, Germany.
# Copyright (c) 2006 SUSE LINUX Products GmbH, Nuernberg, Germany.
#
# Author: Carsten Hoeger
#         Ralf Haferkamp
#
# /etc/init.d/ldap
#
### BEGIN INIT INFO
# Provides:       ldap
# Required-Start: $remote_fs
# Should-Start:   $network
# Required-Stop:
# Should-Stop:    $network
# Default-Start:  3 5
# Default-Stop:
# Description:    start the OpenLDAP2 Server
### END INIT INFO

# Determine the base and follow a runlevel link name.
base=${0##*/}
link=${base#*[SK][0-9][0-9]}

test -f /etc/sysconfig/openldap && . /etc/sysconfig/openldap

SLAPD_BIN=/usr/lib/openldap/slapd
SLAPD_URLS="ldap:///"

test -x $SLAPD_BIN || exit 5

# 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

function init_ldap_listener_urls(){
    LDAPI_URL=""
    case "$OPENLDAP_START_LDAPI" in
        [Yy][Ee][Ss])
            LDAPI_URL="ldapi:///"
            SLAPD_URLS="$LDAPI_URL $SLAPD_URLS"
        ;;
    esac
    if [ -n "$OPENLDAP_LDAP_INTERFACES" ]
    then
        SLAPD_URLS="$LDAPI_URL";
        for iface in $OPENLDAP_LDAP_INTERFACES ;do
            SLAPD_URLS="$SLAPD_URLS ldap://$iface/"
        done
    fi
}

function ldaps_check_tls_options(){
    case "$OPENLDAP_START_LDAPS" in
        yes|Yes|YES)
            if [ -n "$OPENLDAP_LDAPS_INTERFACES" ]
            then
                    for iface in $OPENLDAP_LDAPS_INTERFACES ;do
                    SLAPD_URLS="$SLAPD_URLS ldaps://$iface"
                    done
            else
                    SLAPD_URLS="$SLAPD_URLS ldaps:///"
            fi
            return 0;
            ;;
        *)
            return 0;
            ;;
    esac
}

function check_connection(){
        SLAPD_TIMEOUT=10
        START=$( date +%s)
        while [ $(( $( date +%s) - ${START} )) -lt ${SLAPD_TIMEOUT} ]; do
                ldapsearch -x -H "$SLAPD_URLS" -b "" -s base &>/dev/null
                LDAPSEARCH_RC=$?
                if [ ${LDAPSEARCH_RC} -eq 0 ]; then break
                else sleep 1
                fi
        done
}

depth=0;

function chown_database_dirs() {
        ldapdir=`grep ^directory $1 | awk '{print $2}'`
        for dir in $ldapdir; do
                [ -d "$dir" ] && [ -n "$OPENLDAP_USER" ] && \
                        chown -R $OPENLDAP_USER $dir 2>/dev/null
                [ -d "$dir" ] && [ -n "$OPENLDAP_GROUP" ] && \
                        chgrp -R $OPENLDAP_GROUP $dir 2>/dev/null
        done
        includes=`grep ^include $1 | awk '{print $2}'`
        if [ $depth -le 50 ]; then
                depth=$(( $depth + 1 ));
                for i in $includes; do
                        chown_database_dirs "$i" ;
                done
        fi
}

USER_CMD=""
GROUP_CMD=""
[ ! "x$OPENLDAP_USER" = "x" ] && USER_CMD="-u $OPENLDAP_USER"
[ ! "x$OPENLDAP_GROUP" = "x" ] && GROUP_CMD="-g $OPENLDAP_GROUP"



# 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.

case "$1" in
    start)
        if [ -f /etc/openldap/UPDATE_NEEDED ]; then
            rc_failed 6
            echo "  The configuration of your LDAP server needs to be updated."
            echo "  Please see /usr/share/doc/packages/openldap2/README.update"
            echo "  for details."
            echo "  After the update please remove the file:"
            echo "    /etc/openldap/UPDATE_NEEDED"
            rc_status -v
            exit
        fi
        # chown backend directories if OPENLDAP_CHOWN_DIRS ist set
        if [ "$(echo "$OPENLDAP_CHOWN_DIRS" | tr 'A-Z' 'a-z')" = "yes" ]; then
            if [ -n "$OPENLDAP_USER" -o -n "$OPENLDAP_GROUP" ]; then
                chown_database_dirs "/etc/openldap/slapd.conf"
                chgrp $OPENLDAP_GROUP /etc/openldap/slapd.conf 2>/dev/null
                chmod 640 /etc/openldap/slapd.conf 2>/dev/null
                if test -f /usr/lib/sasl2/slapd.conf ; then
                chgrp $OPENLDAP_GROUP /usr/lib/sasl2/slapd.conf 2>/dev/null
                chmod 640 /usr/lib/sasl2/slapd.conf 2>/dev/null
                fi
                if [ -n "$OPENLDAP_KRB5_KEYTAB" ]; then
                    keytabfile=${OPENLDAP_KRB5_KEYTAB/#FILE:/}
                    if test -f $keytabfile ; then
                        chgrp $OPENLDAP_GROUP $keytabfile 2>/dev/null
                        chmod g+r $keytabfile 2>/dev/null
                    fi
                fi
            fi
        fi
        if [ -n "$OPENLDAP_KRB5_KEYTAB" ]; then
            export KRB5_KTNAME=$OPENLDAP_KRB5_KEYTAB
        fi
        case "$OPENLDAP_REGISTER_SLP" in
            [Yy][Ee][Ss])
                SLAPD_SLP_REG="-o slp=on"
                ;;
            *)
                SLAPD_SLP_REG="-o slp=off"
                ;;
        esac

        init_ldap_listener_urls
        ldaps_check_tls_options
        echo -n "Starting ldap-server"
        /sbin/startproc -t 1 -p /var/run/slapd/slapd.pid $SLAPD_BIN -h "$SLAPD_URLS" $USER_CMD $GROUP_CMD $OPENLDAP_SLAPD_PARAMS $SLAPD_SLP_REG
        # Remember status and be verbose
        rc_status -v
        STARTPROC_RC=$?
        if [ ${STARTPROC_RC} -eq 0 ]; then
                check_connection
        fi
        ;;
    stop)
        echo -n "Shutting down ldap-server"
        /sbin/killproc -t 10 -TERM -p /var/run/slapd/slapd.pid $SLAPD_BIN
        # Remember status and be verbose
        rc_status -v

        ;;
    try-restart)
        ## Stop the service and if this succeeds (i.e. the 
        ## service was running before), start it again.
        ## Note: try-restart is not (yet) part of LSB (as of 0.7.5)
        $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
        # sometimes slapd needs some time to stop
        sleep 3
        $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 ldap server"
        # if it supports it:
        #killproc -HUP $SLAPD_BIN
        #touch /var/run/FOO.pid
        #rc_status -v

        ## Otherwise:
        $0 stop; sleep 3;  $0 start
        rc_status
        ;;
    reload)
        echo -n "Reload ldap server"

        # If it supports signalling:
        #killproc -HUP $SLAPD_BIN
        #touch /var/run/FOO.pid
        #rc_status -v
        
        ## Otherwise if it does not support reload:
        rc_failed 3
        rc_status -v
        ;;
    status)
        echo -n "Checking for service ldap: "
        ## Check status with checkproc(8), if process is running
        ## checkproc will return with exit status 0.

        # Status has a slightly different for the status command:
        # 0 - service running
        # 1 - service dead, but /var/run/  pid  file exists
        # 2 - service dead, but /var/lock/ lock file exists
        # 3 - service not running

        # NOTE: checkproc returns LSB compliant status values.

        checkproc -p /var/run/slapd/slapd.pid $SLAPD_BIN
        rc_status -v

        ;;
    *)
        echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload}"
        exit 1
esac
rc_exit
