FreeBSDize the dhclient-script.
Submitted by: sam
This commit is contained in:
Brooks Davis
parent
2b19b6fca1
commit
8750adaf5a
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=147086
@ -1,6 +1,7 @@
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#!/bin/sh
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#
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# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $
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# $FreeBSD$
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#
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# Copyright (c) 2003 Kenneth R Westerback <krw@openbsd.org>
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#
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@ -18,17 +19,45 @@
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#
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#
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NETSTAT=/usr/bin/netstat
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GREP=/usr/bin/grep
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AWK=/usr/bin/awk
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HOSTNAME=/bin/hostname
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LOCALHOST=127.0.0.1
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if [ -x /usr/bin/logger ]; then
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LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
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else
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LOGGER=echo
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fi
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#
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# Helper functions that implement common actions.
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#
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delete_old_address() {
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if [ -n "$old_ip_address" ]; then
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ifconfig $interface inet -alias $old_ip_address $medium
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route delete "$old_ip_address" 127.0.0.1 >/dev/null 2>&1
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check_hostname() {
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current_hostname=`$HOSTNAME`
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if [ -z "$current_hostname" ]; then
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$LOGGER "New Hostname ($interface): $new_host_name"
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$HOSTNAME $new_host_name
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elif [ "$current_hostname" = "$old_host_name" -a \
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"$new_host_name" != "$old_host_name" ]; then
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$LOGGER "New Hostname ($interface): $new_host_name"
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$HOSTNAME $new_host_name
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fi
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}
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arp_flush() {
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arp -an -i $interface | \
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sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' | \
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sh >/dev/null 2>&1
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}
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delete_old_address() {
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ifconfig $interface inet -alias $old_ip_address $medium
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}
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add_new_address() {
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ifconfig $interface \
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inet $new_ip_address \
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@ -36,14 +65,16 @@ add_new_address() {
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broadcast $new_broadcast_address \
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$medium
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# XXX Original TIMEOUT code did not do this unless $new_routers was set?
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route add $new_ip_address 127.0.0.1 >/dev/null 2>&1
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$LOGGER "New IP Address ($interface): $new_ip_address"
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$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
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$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
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$LOGGER "New Routers ($interface): $new_routers"
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}
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delete_old_alias() {
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if [ -n "$alias_ip_address" ]; then
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ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
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route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
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route delete $alias_ip_address $LOCALHOST > /dev/null 2>&1
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fi
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}
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@ -51,14 +82,17 @@ add_new_alias() {
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if [ -n "$alias_ip_address" ]; then
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ifconfig $interface inet alias $alias_ip_address netmask \
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$alias_subnet_mask
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route add $alias_ip_address 127.0.0.1
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route add $alias_ip_address $LOCALHOST
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fi
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}
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delete_old_routes() {
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# Delete existing default route. We only allow one, so no need to
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# process $old_routers list.
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route delete default >/dev/null 2>&1
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route delete "$old_ip_address" $LOCALHOST >/dev/null 2>&1
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for router in $old_routers; do
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if [ $if_defaultroute = x -o $if_defaultroute = $interface ]; then
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route delete default $route >/dev/null 2>&1
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fi
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done
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if [ -n "$old_static_routes" ]; then
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set $old_static_routes
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@ -68,11 +102,11 @@ delete_old_routes() {
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done
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fi
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arp -dan
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arp_flush
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}
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add_new_routes() {
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route delete default >/dev/null 2>&1
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route add $new_ip_address $LOCALHOST >/dev/null 2>&1
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for router in $new_routers; do
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if [ "$new_ip_address" = "$router" ]; then
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route add default -iface $router >/dev/null 2>&1
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@ -85,6 +119,7 @@ add_new_routes() {
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done
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if [ -n "$new_static_routes" ]; then
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$LOGGER "New Static Routes ($interface): $new_static_routes"
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set $new_static_routes
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while [ $# -gt 1 ]; do
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route add $1 $2
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@ -141,12 +176,10 @@ add_new_resolv_conf() {
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# Start of active code.
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#
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if [ -n "$new_network_number" ]; then
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echo "New Network Number: $new_network_number"
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fi
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if [ -n "$new_broadcast_address" ]; then
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echo "New Broadcast Address: $new_broadcast_address"
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if [ -x $NETSTAT ]; then
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if_defaulroute=`$NETSTAT -rn | $GREP "^default" | $AWK '{print $6}'`
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else
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if_defaultroute="x"
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fi
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case $reason in
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@ -165,6 +198,7 @@ ARPCHECK|ARPSEND)
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;;
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BOUND|RENEW|REBIND|REBOOT)
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check_hostname
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if [ -n "$old_ip_address" ]; then
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if [ "$old_ip_address" != "$alias_ip_address" ]; then
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delete_old_alias
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@ -205,6 +239,7 @@ TIMEOUT)
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add_new_address
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sleep 1
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if [ -n "$new_routers" ]; then
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$LOGGER "New Routers ($interface): $new_routers"
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set "$new_routers"
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if ping -q -c 1 -w 1 "$1"; then
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if [ "$new_ip_address" != "$alias_ip_address" ]; then
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@ -217,8 +252,6 @@ TIMEOUT)
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fi
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fi
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ifconfig $interface inet -alias $new_ip_address $medium
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# XXX Why not a delete_old_address as before all other invocations of
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# delete_old_routes?
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delete_old_routes
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exit 1
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;;
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