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#!/bin/sh
# Begin services/dhclient
# Origianlly based upon lfs-bootscripts-1.12 $NETWORK_DEVICES/if{down,up}
# Rewritten by Nathan Coulson <nathan@linuxfromscratch.org>
# Adapted for dhclient by DJ Lucas <dj@linuxfromscratch.org>
# Update for LFS 7.0 by Ken Moffat <ken@linuxfromscratch.org>
# Call with: IFCONFIG=<filename> /lib/services/dhclient <IFACE> <up | down>
#$LastChangedBy: krejzi $
#$Date: 2013-02-11 17:22:35 +0100 (Mon, 11 Feb 2013) $
. /lib/lsb/init-functions
. $IFCONFIG
PIDFILE=/run/dhclient-$1.pid
LFILE=/var/lib/dhclient/dhclient-$1.leases
getipstats()
{
# Print the last 16 lines of dhclient.leases
sed -e :a -e '$q;N;17,$D;ba' ${LFILE}
}
# Make compatible with older versions of init-functions
unset is_true
is_true()
{
[ "$1" = "1" ] || [ "$1" = "yes" ] || [ "$1" = "true" ] ||
[ "$1" = "y" ] || [ "$1" = "t" ]
}
case "$2" in
up)
if [ -e ${PIDFILE} ]; then
ps $(cat ${PIDFILE}) | grep dhclient >/dev/null
if [ "$?" = "0" ]; then
log_warning_msg "\n dhclient appears to be running on $1"
exit 0
else
rm ${PIDFILE}
fi
fi
log_info_msg "\n Starting dhclient on the $1 interface..."
/sbin/dhclient -lf ${LFILE} -pf ${PIDFILE} $DHCP_START $1
if [ "$?" != "0" ]; then
log_failure_msg2
exit 1
fi
# Print the assigned settings if requested
if is_true "$PRINTIP" -o is_true "$PRINTALL"; then
# Get info from dhclient.leases file
IPADDR=`getipstats | grep "fixed-address" | \
sed 's/ fixed-address //' | \
sed 's/\;//'`
NETMASK=`getipstats | grep "subnet-mask" | \
sed 's/ option subnet-mask //' | \
sed 's/\;//'`
GATEWAY=`getipstats | grep "routers" | \
sed 's/ option routers //' | \
sed 's/\;//'`
DNS=`getipstats | grep "domain-name-servers" | \
sed 's/ option domain-name-servers //' | \
sed 's/\;//' | sed 's/,/ and /'`
if [ "$PRINTALL" = "yes" ]; then
# This is messy, the messages are on one very long
# line on the screen and in the log
log_info_msg " DHCP Assigned Settings for $1:"
log_info_msg " IP Address: $IPADDR"
log_info_msg " Subnet Mask: $NETMASK"
log_info_msg " Default Gateway: $GATEWAY"
log_info_msg " DNS Server: $DNS"
else
log_info_msg " IP Addresss:""$IPADDR"
fi
fi
log_success_msg2
;;
down)
if [ ! -e ${PIDFILE} ]; then
log_warning_msg "\n dhclient doesn't appear to be running on $1"
exit 0
fi
log_info_msg "\n Stopping dhclient on the $1 interface..."
/sbin/dhclient -r -lf ${LFILE} -pf ${PIDFILE} $DHCP_STOP $1
ps $(cat ${PIDFILE}) | grep dhclient >/dev/null
if [ "$?" != "0" ]; then
rm -f ${PIDFILE}
fi
evaluate_retval
;;
*)
echo "Usage: $0 [interface] {up|down}"
exit 1
;;
esac
# End services/dhclient
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