slapd.init

#!/bin/sh
### BEGIN INIT INFO
# Provides:          slapd
# Required-Start:    $remote_fs $network $syslog
# Required-Stop:     $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: OpenLDAP standalone server (Lightweight Directory Access Protocol)
### END INIT INFO

# Specify path variable
PATH=/sbin:/usr/sbin:/bin:/usr/bin

# Kill me on all errors
set -e

# Set the paths to slapd as a variable so that someone who really
# wants to can override the path in /etc/default/slapd.
SLAPD=/opt/openldap/libexec/slapd

# Stop processing if slapd is not there
[ -x $SLAPD ] || exit 0

# debconf may have this file descriptor open and it makes things work a bit
# more reliably if we redirect it as a matter of course.  db_stop will take
# care of this, but this won't hurt.
exec 3>/dev/null

# Source the init script configuration
if [ -f "/etc/default/slapd" ]; then
        . /etc/default/slapd
fi

# Load the default location of the slapd config file
if [ -z "$SLAPD_CONF" ]; then
        SLAPD_CONF="/etc/ldap/slapd.d/"
fi

# Stop processing if the config file is not there
if [ ! -r "$SLAPD_CONF" ]; then
  cat <<EOF >&2
No configuration directory was found for slapd at $SLAPD_CONF.
If you have moved the slapd configuration directory please modify
/etc/default/slapd to reflect this.  If you chose to not
configure slapd during installation then you need to do so
prior to attempting to start slapd.
EOF
  exit 0 # Should this be 1?
fi

# Find out the name of slapd's pid file
if [ -z "$SLAPD_PIDFILE" ]; then
        # If using old one-file configuration scheme
        if [ -f "$SLAPD_CONF" ] ; then
                SLAPD_PIDFILE=`sed -ne 's/^pidfile[[:space:]]\+\(.\+\)/\1/p' \
                        "$SLAPD_CONF"`
        # Else, if using new directory configuration scheme
        elif [ -d "$SLAPD_CONF" ] ; then
                SLAPD_PIDFILE=`sed -ne \
                        's/^olcPidFile:[[:space:]]\+\(.\+\)[[:space:]]*/\1/p' \
                        "$SLAPD_CONF"/'cn=config.ldif'`
        fi
fi

# Set the correct config option according to the configuration backend.
if [ -d "$SLAPD_CONF" ] ; then
        SLAPD_OPTIONS="-F $SLAPD_CONF $SLAPD_OPTIONS"
else
        SLAPD_OPTIONS="-f $SLAPD_CONF $SLAPD_OPTIONS"
fi

# XXX: Breaks upgrading if there is no pidfile (invoke-rc.d stop will fail)
# -- Torsten
if [ -z "$SLAPD_PIDFILE" ]; then
        cat <<EOF >&2
The pidfile for slapd is neither specified in "$SLAPD_CONF" nor
in /etc/default/slapd. Consequently, slapd will not be started.
EOF
        exit 1
fi

# Make sure the pidfile directory exists with correct permissions
piddir=`dirname "$SLAPD_PIDFILE"`
if [ ! -d "$piddir" ]; then
        mkdir -p "$piddir"
        [ -z "$SLAPD_USER" ] || chown -R "$SLAPD_USER" "$piddir"
        [ -z "$SLAPD_GROUP" ] || chgrp -R "$SLAPD_GROUP" "$piddir"
fi

# Pass the user and group to run under to slapd
if [ "$SLAPD_USER" ]; then
        SLAPD_OPTIONS="-u $SLAPD_USER $SLAPD_OPTIONS"
fi

if [ "$SLAPD_GROUP" ]; then
        SLAPD_OPTIONS="-g $SLAPD_GROUP $SLAPD_OPTIONS"
fi

# Check whether we were configured to not start the services.
check_for_no_start() {
        if [ -n "$SLAPD_NO_START" ]; then
                echo 'Not starting slapd: SLAPD_NO_START set in /etc/default/slapd' >&2
                exit 0
        fi
        if [ -n "$SLAPD_SENTINEL_FILE" ] && [ -e "$SLAPD_SENTINEL_FILE" ]; then
                echo "Not starting slapd: $SLAPD_SENTINEL_FILE exists" >&2
                exit 0
        fi
}

# Tell the user that something went wrong and give some hints for
# resolving the problem.
report_failure() {
        if [ -n "$reason" ]; then
                echo " - failed: "
                echo "$reason"
        else
                echo " - failed."
                cat <<EOF
The operation failed but no output was produced. For hints on what went
wrong please refer to the system's logfiles (e.g. /var/log/syslog) or
try running the daemon in Debug mode like via "slapd -d 16383" (warning:
this will create copious output).
EOF

                if [ -n "$SLAPD_OPTIONS" -o \
                     -n "$SLAPD_SERVICES" ]; then
                        cat << EOF

Below, you can find the command line options used by this script to 
run slapd. Do not forget to specify those options if you
want to look to debugging output:
EOF
                        if [ -z "$SLAPD_SERVICES" ]; then
                                if [ -n "$SLAPD_OPTIONS" ]; then
                                        echo "  slapd $SLAPD_OPTIONS"
                                fi
                        else
                                echo "  slapd -h '$SLAPD_SERVICES' $SLAPD_OPTIONS"
                        fi
                fi
        fi
}

# Start the slapd daemon and capture the error message if any to 
# $reason.
start_slapd() {
        echo -n " slapd"
        if [ -z "$SLAPD_SERVICES" ]; then
                reason="`start-stop-daemon --start --quiet --oknodo \
                        --pidfile "$SLAPD_PIDFILE" \
                        --exec $SLAPD -- $SLAPD_OPTIONS 2>&1`"
        else
                reason="`start-stop-daemon --start --quiet --oknodo \
                        --pidfile "$SLAPD_PIDFILE" \
                        --exec $SLAPD -- -h "$SLAPD_SERVICES" $SLAPD_OPTIONS 2>&1`"
        fi

        # Backward compatibility with OpenLDAP 2.1 client libraries.
        if [ ! -h /var/run/ldapi ] && [ ! -e /var/run/ldapi ] ; then
                ln -s slapd/ldapi /var/run/ldapi
        fi
}

# Stop the slapd daemon and capture the error message (if any) to
# $reason.
stop_slapd() {
        echo -n " slapd"
        reason="`start-stop-daemon --stop --quiet --oknodo --retry TERM/10 \
                --pidfile "$SLAPD_PIDFILE" \
                --exec $SLAPD 2>&1`"
}

# Start the OpenLDAP daemons
start_ldap() {
        echo -n "Starting OpenLDAP:"
        trap 'report_failure' 0
        start_slapd
        trap "-" 0
        echo .
}

# Stop the OpenLDAP daemons
stop_ldap() {
        echo -n "Stopping OpenLDAP:"
        trap 'report_failure' 0
        stop_slapd
        trap "-" 0
        echo .
}

# Check OpenLDAP status
status_slapd() {
        # No PID
        if [ ! -f $SLAPD_PIDFILE ]; then
                echo "OpenLDAP is NOT running"
                exit 3
        fi

        # Bogus PID
        for pid in $(cat $SLAPD_PIDFILE) ; do
                if ! ps --noheaders p "$pid" | grep $SLAPD > /dev/null ; then
                        echo "OpenLDAP is NOT running, bogus pidfile found: '$SLAPD_PIDFILE'"
                        exit 1
                fi
        done

        # Running PID
        echo "OpenLDAP is running"
        exit 0
}

case "$1" in
  start)
        check_for_no_start
        start_ldap ;;
  stop)
        stop_ldap ;;
  restart|force-reload)
        check_for_no_start
        stop_ldap
        start_ldap
        ;;
  status)
        status_slapd ;;
  *)
        echo "Usage: $0 {start|stop|restart|force-reload|status}"
        exit 1
        ;;
esac