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|
#!/bin/bash
DHCP_DEFAULT="/etc/default/isc-dhcp-server"
DHCP_INIT="/etc/init.d/isc-dhcp-server"
if [ -e "${DHCP_DEFAULT}" ];
then
echo "${DHCP_DEFAULT} exists! Overwriting."
fi
set -e
cat > ${DHCP_DEFAULT}<<'_EOF'
# Defaults for dhcp initscript
# you can enable v4 and/or v6 protocols
V4_ENABLED="yes"
V6_ENABLED="yes"
# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
# Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACES_V4="eth0"
INTERFACES_V6="eth0"
_EOF
set +e
if [ -e "${DHCP_INIT}" ];
then
echo "${DHCP_INIT} exists! Overwriting."
fi
set -e
cat > ${DHCP_INIT}<<'_EOF'
#!/bin/sh
#
#
### BEGIN INIT INFO
# Provides: isc-dhcp-server
# Required-Start: $remote_fs $network $syslog
# Required-Stop: $remote_fs $network $syslog
# Should-Start: $local_fs slapd $named
# Should-Stop: $local_fs slapd
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: DHCP server
# Description: Dynamic Host Configuration Protocol Server
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin
test -f /usr/sbin/dhcpd || exit 0
# It is not safe to start if we don't have a default configuration...
if [ ! -f /etc/default/isc-dhcp-server ]; then
echo "/etc/default/isc-dhcp-server does not exist! - Aborting..."
echo "Run 'dpkg-reconfigure isc-dhcp-server' to fix the problem."
exit 0
fi
. /lib/lsb/init-functions
# Read init script configuration (so far only interfaces the daemon
# should listen on.)
[ -f /etc/default/isc-dhcp-server ] && . /etc/default/isc-dhcp-server
NAME=dhcpd
DESC="DHCPv4"
DHCPDPID=/var/run/dhcpd.pid
NAME6=dhcpd6
DESC6="DHCPv6"
DHCPDPID6=/var/run/dhcpd6.pid
# $1 -> version (-4 or -6)
# $2 -> config file (usually /etc/dhcp/dhcpd.conf or /etc/dhcp/dhcpd6.conf)
test_config()
{
if ! /usr/sbin/dhcpd -t $1 -cf $2 -q > /dev/null 2>&1; then
echo "dhcpd self-test failed. Please fix the config file."
echo "The error was: "
/usr/sbin/dhcpd -t -6 -cf $2
exit 1
fi
}
# $1 -> -v for messages, -q for none
# $2 -> PID file
# $3 -> NAME
check_status()
{
if [ ! -r $2 ]; then
test "$1" != -v || echo "$3 is not running."
return 3
fi
if read pid < "$2" && ps -p "$pid" > /dev/null 2>&1; then
test "$1" != -v || echo "$3 is running."
return 0
else
test "$1" != -v || echo "$3 is not running but $2 exists."
return 1
fi
}
start_daemon()
{
VERSION=$1
CONF_FILE=$2
PROCESS=$3
PIDFILE=$4
DESCRIPTION=$5
shift 5
INTERFACES=$*
test_config "$VERSION" "$CONF_FILE";
log_daemon_msg "Starting ISC $DESCRIPTION server" "$PROCESS";
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--exec /usr/sbin/dhcpd -- $VERSION -q -cf $CONF_FILE \
$INTERFACES
sleep 2
if check_status -q $PIDFILE $NAME; then
log_end_msg 0
else
log_failure_msg "check syslog for diagnostics."
log_end_msg 1
exit 1
fi
}
stop_daemon()
{
# Is DHCPv6 enabled? or daemon is runing ?
if test "$V6_ENABLED" = "yes" || check_status -q $DHCPDPID6 $NAME; then
log_daemon_msg "Stopping ISC DHCPv6 server" "$NAME6"
start-stop-daemon --stop --quiet --pidfile $DHCPDPID6
log_end_msg $?
rm -f "$DHCPDPID6"
fi
# Is DHCPv4 enabled or daemon is runing?
if test "$V4_ENABLED" = "yes" || check_status -q $DHCPDPID $NAME; then
log_daemon_msg "Stopping ISC DHCPv4 server" "$NAME"
start-stop-daemon --stop --quiet --pidfile $DHCPDPID
log_end_msg $?
rm -f "$DHCPDPID"
fi
}
case "$1" in
start)
# Is DHCPv6 enabled?
case "$V6_ENABLED" in
yes)
start_daemon "-6" "/etc/dhcp/dhcpd6.conf" \
$NAME6 $DHCPDPID6 $DESC6 $INTERFACES_V6
;;
esac
# Is DHCPv4 enabled?
case "$V4_ENABLED" in
yes)
start_daemon "-4" "/etc/dhcp/dhcpd.conf" \
$NAME $DHCPDPID $DESC $INTERFACES_V4
;;
esac
;;
stop)
stop_daemon
;;
restart | force-reload)
#test_config
$0 stop
sleep 2
$0 start
if [ "$?" != "0" ]; then
exit 1
fi
;;
status)
echo -n "Status of $DESC: "
check_status -v $DHCPDPID $NAME
echo -n "Status of $DESC6: "
check_status -v $DHCPDPID6 $NAME6
exit "$?"
;;
*)
echo "Usage: $0 {start|stop|restart|force-reload|status}"
exit 1
esac
exit 0
_EOF
set +e
chmod 755 ${DHCP_INIT}
|
