diff options
| -rwxr-xr-x | sbin/dhclient-script | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/sbin/dhclient-script b/sbin/dhclient-script new file mode 100755 index 0000000..6d5f70a --- /dev/null +++ b/sbin/dhclient-script @@ -0,0 +1,243 @@ +#!/bin/sh +# +# $Id$ +# +# $FreeBSD: src/contrib/isc-dhcp/client/scripts/freebsd,v 1.28 2004/06/26 10:47:38 mbr Exp $ + +if [ -x /usr/bin/logger ]; then + LOGGER="/usr/bin/logger -s -p user.notice -t dhclient" +else + LOGGER=echo +fi + +make_resolv_conf() { + if [ x"$new_domain_name_servers" != x ]; then + if [ "x$new_domain_name" != x ]; then + ( echo search $new_domain_name >/etc/resolv.conf ) + exit_status=$? + else + ( rm -f /etc/resolv.conf ) + exit_status=$? + fi + if [ $exit_status -ne 0 ]; then + $LOGGER "WARNING: Unable to update resolv.conf: Error $exit_status" + else + for nameserver in $new_domain_name_servers; do + ( echo nameserver $nameserver >>/etc/resolv.conf ) + done + fi + fi +} + +# Must be used on exit. Invokes the local dhcp client exit hooks, if any. +exit_with_hooks() { + exit_status=$1 + if [ -f /etc/dhclient-exit-hooks ]; then + . /etc/dhclient-exit-hooks + fi +# probably should do something with exit status of the local script + exit $exit_status +} + +# Invoke the local dhcp client enter hooks, if they exist. +if [ -f /etc/dhclient-enter-hooks ]; then + exit_status=0 + . /etc/dhclient-enter-hooks + # allow the local script to abort processing of this state + # local script must set exit_status variable to nonzero. + if [ $exit_status -ne 0 ]; then + exit $exit_status + fi +fi + +if [ x$new_broadcast_address != x ]; then + new_broadcast_arg="broadcast $new_broadcast_address" +fi +if [ x$old_broadcast_address != x ]; then + old_broadcast_arg="broadcast $old_broadcast_address" +fi +if [ x$new_subnet_mask != x ]; then + new_netmask_arg="netmask $new_subnet_mask" +fi +if [ x$old_subnet_mask != x ]; then + old_netmask_arg="netmask $old_subnet_mask" +fi +if [ x$alias_subnet_mask != x ]; then + alias_subnet_arg="netmask $alias_subnet_mask" +fi + +# Get the interface to which our default route is bound to. +if [ -x /usr/bin/netstat ]; then + if_defaultroute=`/usr/bin/netstat -rn \ + | /usr/bin/grep "^default" \ + | /usr/bin/awk '{print $6}'` +else + if_defaultroute="x" +fi + +if [ x$reason = xMEDIUM ]; then + eval "ifconfig $interface $medium" + eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1 + sleep 1 + exit_with_hooks 0 +fi + +if [ x$reason = xPREINIT ]; then + if [ x$alias_ip_address != x ]; then + ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 + route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 + fi + ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \ + broadcast 255.255.255.255 up + exit_with_hooks 0 +fi + +if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then + exit_with_hooks 0; +fi + +if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \ + [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then + current_hostname=`/bin/hostname` + if [ x$current_hostname = x ] || \ + [ x$current_hostname = x$old_host_name ]; then + if [ x$current_hostname = x ] || \ + [ x$new_host_name != x$old_host_name ]; then + $LOGGER "New Hostname: $new_host_name" + hostname $new_host_name + fi + fi + if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \ + [ x$alias_ip_address != x$old_ip_address ]; then + ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 + route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 + fi + if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ] + then + eval "ifconfig $interface inet -alias $old_ip_address $medium" + route delete $old_ip_address 127.1 >/dev/null 2>&1 + for router in $old_routers; do + route delete default $router >/dev/null 2>&1 + done + if [ -n "$old_static_routes" ]; then + set -- $old_static_routes + while [ $# -gt 1 ]; do + route delete $1 $2 + shift; shift + done + fi + arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' |sh + fi + if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \ + [ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then + eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \ + $new_broadcast_arg $medium" + $LOGGER "New IP Address ($interface): $new_ip_address" + $LOGGER "New Subnet Mask ($interface): $new_subnet_mask" + $LOGGER "New Broadcast Address ($interface): $new_broadcast_address" + if [ -n "$new_routers" ]; then + $LOGGER "New Routers: $new_routers" + fi + route add $new_ip_address 127.1 >/dev/null 2>&1 + for router in $new_routers; do + route add default $router >/dev/null 2>&1 + done + if [ -n "$new_static_routes" ]; then + $LOGGER "New Static Routes: $new_static_routes" + set -- $new_static_routes + while [ $# -gt 1 ]; do + route add $1 $2 + shift; shift + done + fi + fi + if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ]; + then + ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg + route add $alias_ip_address 127.0.0.1 + fi + make_resolv_conf + exit_with_hooks 0 +fi + +if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \ + || [ x$reason = xSTOP ]; then + if [ x$alias_ip_address != x ]; then + ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 + route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 + fi + if [ x$old_ip_address != x ]; then + eval "ifconfig $interface inet -alias $old_ip_address $medium" + route delete $old_ip_address 127.1 >/dev/null 2>&1 + for router in $old_routers; do + if [ $if_defaultroute = x ] || [ $if_defaultroute = $interface ]; then + route delete default $router >/dev/null 2>&1 + fi + done + if [ -n "$old_static_routes" ]; then + set -- $old_static_routes + while [ $# -gt 1 ]; do + route delete $1 $2 + shift; shift + done + fi + arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \ + |sh >/dev/null 2>&1 + fi + if [ x$alias_ip_address != x ]; then + ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg + route add $alias_ip_address 127.0.0.1 + fi + exit_with_hooks 0 +fi + +if [ x$reason = xTIMEOUT ]; then + if [ x$alias_ip_address != x ]; then + ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1 + route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1 + fi + eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \ + $new_broadcast_arg $medium" + $LOGGER "New IP Address ($interface): $new_ip_address" + $LOGGER "New Subnet Mask ($interface): $new_subnet_mask" + $LOGGER "New Broadcast Address ($interface): $new_broadcast_address" + sleep 1 + if [ -n "$new_routers" ]; then + $LOGGER "New Routers: $new_routers" + set -- $new_routers + if ping -q -c 1 $1; then + if [ x$new_ip_address != x$alias_ip_address ] && \ + [ x$alias_ip_address != x ]; then + ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg + route add $alias_ip_address 127.0.0.1 + fi + route add $new_ip_address 127.1 >/dev/null 2>&1 + for router in $new_routers; do + route add default $router >/dev/null 2>&1 + done + set -- $new_static_routes + while [ $# -gt 1 ]; do + route add $1 $2 + shift; shift + done + make_resolv_conf + exit_with_hooks 0 + fi + fi + eval "ifconfig $interface inet -alias $new_ip_address $medium" + for router in $old_routers; do + route delete default $router >/dev/null 2>&1 + done + if [ -n "$old_static_routes" ]; then + set -- $old_static_routes + while [ $# -gt 1 ]; do + route delete $1 $2 + shift; shift + done + fi + arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \ + |sh >/dev/null 2>&1 + exit_with_hooks 1 +fi + +exit_with_hooks 0 |
