120 lines
3.1 KiB
Bash
120 lines
3.1 KiB
Bash
#!/bin/sh
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# Begin services/dhclient
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# Origianlly based upon lfs-bootscripts-1.12 $NETWORK_DEVICES/if{down,up}
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# Rewritten by Nathan Coulson <nathan@linuxfromscratch.org>
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# Adapted for dhclient by DJ Lucas <dj@linuxfromscratch.org>
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# Update for LFS 7.0 by Ken Moffat <ken@linuxfromscratch.org>
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# Call with: IFCONFIG=<filename> /lib/services/dhclient <IFACE> <up | down>
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#$LastChangedBy: bdubbs $
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#$Date: 2014-08-27 13:01:33 -0500 (Wed, 27 Aug 2014) $
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. /lib/lsb/init-functions
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. $IFCONFIG
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PIDFILE=/run/dhclient-$1.pid
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LFILE=/var/lib/dhclient/dhclient-$1.leases
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getipstats()
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{
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# Print the last 16 lines of dhclient.leases
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sed -e :a -e '$q;N;17,$D;ba' ${LFILE}
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}
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# Make compatible with older versions of init-functions
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unset is_true
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is_true()
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{
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[ "$1" = "1" ] || [ "$1" = "yes" ] || [ "$1" = "true" ] ||
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[ "$1" = "y" ] || [ "$1" = "t" ]
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}
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case "$2" in
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up)
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if [ -e ${PIDFILE} ]; then
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ps $(cat ${PIDFILE}) | grep dhclient >/dev/null
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if [ "$?" = "0" ]; then
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log_warning_msg "\n dhclient appears to be running on $1"
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exit 0
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else
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rm ${PIDFILE}
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fi
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fi
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log_info_msg "\n Starting dhclient on the $1 interface..."
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/sbin/dhclient -lf ${LFILE} -pf ${PIDFILE} $DHCP_START $1
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if [ "$?" != "0" ]; then
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log_failure_msg2
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exit 1
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fi
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# Print the assigned settings if requested
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if is_true "$PRINTIP" -o is_true "$PRINTALL"; then
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# Get info from dhclient.leases file
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IPADDR=`getipstats | grep "fixed-address" | \
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sed 's/ fixed-address //' | \
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sed 's/\;//'`
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NETMASK=`getipstats | grep "subnet-mask" | \
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sed 's/ option subnet-mask //' | \
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sed 's/\;//'`
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GATEWAY=`getipstats | grep "routers" | \
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sed 's/ option routers //' | \
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sed 's/\;//'`
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DNS=`getipstats | grep "domain-name-servers" | \
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sed 's/ option domain-name-servers //' | \
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sed 's/\;//' | sed 's/,/ and /'`
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if [ "$PRINTALL" = "yes" ]; then
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# This is messy, the messages are on one very long
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# line on the screen and in the log
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log_info_msg " DHCP Assigned Settings for $1:"
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log_info_msg " IP Address: $IPADDR"
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log_info_msg " Subnet Mask: $NETMASK"
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log_info_msg " Default Gateway: $GATEWAY"
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log_info_msg " DNS Server: $DNS"
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else
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log_info_msg " IP Addresss:""$IPADDR"
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fi
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fi
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log_success_msg2
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;;
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down)
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if [ ! -e ${PIDFILE} ]; then
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log_warning_msg "\n dhclient doesn't appear to be running on $1"
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exit 0
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fi
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log_info_msg "\n Stopping dhclient on the $1 interface..."
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/sbin/dhclient -r -lf ${LFILE} -pf ${PIDFILE} $DHCP_STOP $1
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if [ -e ${PIDFILE} ]; then
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ps $(cat ${PIDFILE}) | grep dhclient >/dev/null
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if [ "$?" != "0" ]; then
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rm -f ${PIDFILE}
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fi
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fi
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evaluate_retval
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;;
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*)
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echo "Usage: $0 [interface] {up|down}"
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exit 1
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;;
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esac
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# End services/dhclient
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