| dhclient-script (175554) | dhclient-script (177730) |
|---|---|
| 1#!/bin/sh 2# 3# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $ | 1#!/bin/sh 2# 3# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $ |
| 4# $FreeBSD: head/sbin/dhclient/dhclient-script 175554 2008-01-21 23:54:57Z brooks $ | 4# $FreeBSD: head/sbin/dhclient/dhclient-script 177730 2008-03-30 02:42:39Z brooks $ |
| 5# 6# Copyright (c) 2003 Kenneth R Westerback <krw@openbsd.org> 7# 8# Permission to use, copy, modify, and distribute this software for any 9# purpose with or without fee is hereby granted, provided that the above 10# copyright notice and this permission notice appear in all copies. 11# 12# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19# 20# 21 22ARP=/usr/sbin/arp | 5# 6# Copyright (c) 2003 Kenneth R Westerback <krw@openbsd.org> 7# 8# Permission to use, copy, modify, and distribute this software for any 9# purpose with or without fee is hereby granted, provided that the above 10# copyright notice and this permission notice appear in all copies. 11# 12# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19# 20# 21 22ARP=/usr/sbin/arp |
| 23AWK=/usr/bin/awk | |
| 24HOSTNAME=/bin/hostname 25IFCONFIG='/sbin/ifconfig -n' | 23HOSTNAME=/bin/hostname 24IFCONFIG='/sbin/ifconfig -n' |
| 26NETSTAT=/usr/bin/netstat | |
| 27 28LOCALHOST=127.0.0.1 29 30if [ -x /usr/bin/logger ]; then 31 LOGGER="/usr/bin/logger -s -p user.notice -t dhclient" 32else 33 LOGGER=echo 34fi --- 84 unchanged lines hidden (view full) --- 119 set $classless_routes 120 while [ $# -gt 1 ]; do 121 route delete "$1" "$2" 122 shift; shift 123 done 124 return 0; 125 fi 126 | 25 26LOCALHOST=127.0.0.1 27 28if [ -x /usr/bin/logger ]; then 29 LOGGER="/usr/bin/logger -s -p user.notice -t dhclient" 30else 31 LOGGER=echo 32fi --- 84 unchanged lines hidden (view full) --- 117 set $classless_routes 118 while [ $# -gt 1 ]; do 119 route delete "$1" "$2" 120 shift; shift 121 done 122 return 0; 123 fi 124 |
| 127 for router in $old_routers; do 128 if [ $if_defaultroute = x -o $if_defaultroute = $interface ]; then 129 route delete default $route >/dev/null 2>&1 130 fi 131 done | 125 # If we supported multiple default routes, we'd be removing each 126 # one here. We don't so just delete the default route if it's 127 # through our interface. 128 if is_default_interface; then 129 route delete default >/dev/null 2>&1 130 fi |
| 132 133 if [ -n "$old_static_routes" ]; then 134 set $old_static_routes 135 while [ $# -gt 1 ]; do 136 route delete "$1" "$2" 137 shift; shift 138 done 139 fi --- 24 unchanged lines hidden (view full) --- 164 route add "$1" "$2" 165 fi 166 shift; shift 167 done 168 return 169 fi 170 171 for router in $new_routers; do | 131 132 if [ -n "$old_static_routes" ]; then 133 set $old_static_routes 134 while [ $# -gt 1 ]; do 135 route delete "$1" "$2" 136 shift; shift 137 done 138 fi --- 24 unchanged lines hidden (view full) --- 163 route add "$1" "$2" 164 fi 165 shift; shift 166 done 167 return 168 fi 169 170 for router in $new_routers; do |
| 172 if [ "$new_ip_address" = "$router" ]; then 173 route add default -iface $router >/dev/null 2>&1 174 else 175 route add default $router >/dev/null 2>&1 | 171 if is_default_interface; then 172 173 if [ "$new_ip_address" = "$router" ]; then 174 route add default -iface $router >/dev/null 2>&1 175 else 176 route add default $router >/dev/null 2>&1 177 fi |
| 176 fi 177 # 2nd and subsequent default routers error out, so explicitly 178 # stop processing the list after the first one. 179 break 180 done 181 182 if [ -n "$new_static_routes" ]; then 183 $LOGGER "New Static Routes ($interface): $new_static_routes" --- 65 unchanged lines hidden (view full) --- 249 exit_status=$1 250 if [ -f /etc/dhclient-exit-hooks ]; then 251 . /etc/dhclient-exit-hooks 252 fi 253 # probably should do something with exit status of the local script 254 exit $exit_status 255} 256 | 178 fi 179 # 2nd and subsequent default routers error out, so explicitly 180 # stop processing the list after the first one. 181 break 182 done 183 184 if [ -n "$new_static_routes" ]; then 185 $LOGGER "New Static Routes ($interface): $new_static_routes" --- 65 unchanged lines hidden (view full) --- 251 exit_status=$1 252 if [ -f /etc/dhclient-exit-hooks ]; then 253 . /etc/dhclient-exit-hooks 254 fi 255 # probably should do something with exit status of the local script 256 exit $exit_status 257} 258 |
| 259# Get the interface with the current ipv4 default route on it using only 260# commands that are available prior to /usr being mounted. 261is_default_interface() 262{ 263 routeget="`route get -inet default`" 264 oldifs="$IFS" 265 IFS=" 266" 267 defif= 268 for line in $routeget ; do 269 case $line in 270 *interface:*) 271 defif=${line##*: } 272 ;; 273 esac 274 done 275 IFS=${oldifs} 276 277 if [ -z "$defif" -o "$defif" = "$interface" ]; then 278 return 0 279 else 280 return 1 281 fi 282} 283 |
|
| 257# 258# Start of active code. 259# 260 261# Invoke the local dhcp client enter hooks, if they exist. 262if [ -f /etc/dhclient-enter-hooks ]; then 263 exit_status=0 264 . /etc/dhclient-enter-hooks 265 # allow the local script to abort processing of this state 266 # local script must set exit_status variable to nonzero. 267 if [ $exit_status -ne 0 ]; then 268 exit $exit_status 269 fi 270fi 271 | 284# 285# Start of active code. 286# 287 288# Invoke the local dhcp client enter hooks, if they exist. 289if [ -f /etc/dhclient-enter-hooks ]; then 290 exit_status=0 291 . /etc/dhclient-enter-hooks 292 # allow the local script to abort processing of this state 293 # local script must set exit_status variable to nonzero. 294 if [ $exit_status -ne 0 ]; then 295 exit $exit_status 296 fi 297fi 298 |
| 272if [ -x $NETSTAT ]; then 273 if_defaultroute=`$NETSTAT -rnf inet | $AWK '{if ($1=="default") printf $6}'` 274else 275 if_defaultroute="x" 276fi 277 | |
| 278case $reason in 279MEDIUM) 280 eval "$IFCONFIG $interface $medium" 281 eval "$IFCONFIG $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1 282 sleep 1 283 ;; 284 285PREINIT) --- 20 unchanged lines hidden (view full) --- 306 [ -z "$old_ip_address" ] || \ 307 [ "$old_ip_address" != "$new_ip_address" ]; then 308 add_new_address 309 add_new_routes 310 fi 311 if [ "$new_ip_address" != "$alias_ip_address" ]; then 312 add_new_alias 313 fi | 299case $reason in 300MEDIUM) 301 eval "$IFCONFIG $interface $medium" 302 eval "$IFCONFIG $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1 303 sleep 1 304 ;; 305 306PREINIT) --- 20 unchanged lines hidden (view full) --- 327 [ -z "$old_ip_address" ] || \ 328 [ "$old_ip_address" != "$new_ip_address" ]; then 329 add_new_address 330 add_new_routes 331 fi 332 if [ "$new_ip_address" != "$alias_ip_address" ]; then 333 add_new_alias 334 fi |
| 314 add_new_resolv_conf | 335 if is_default_interface; then 336 add_new_resolv_conf 337 fi |
| 315 ;; 316 317EXPIRE|FAIL) 318 delete_old_alias 319 if [ -n "$old_ip_address" ]; then 320 delete_old_address 321 delete_old_routes 322 fi 323 if [ -x $ARP ]; then 324 $ARP -d -a -i $interface 325 fi 326 # XXX Why add alias we just deleted above? 327 add_new_alias | 338 ;; 339 340EXPIRE|FAIL) 341 delete_old_alias 342 if [ -n "$old_ip_address" ]; then 343 delete_old_address 344 delete_old_routes 345 fi 346 if [ -x $ARP ]; then 347 $ARP -d -a -i $interface 348 fi 349 # XXX Why add alias we just deleted above? 350 add_new_alias |
| 328 if [ -f /etc/resolv.conf.save ]; then 329 cat /etc/resolv.conf.save > /etc/resolv.conf | 351 if is_default_interface; then 352 if [ -f /etc/resolv.conf.save ]; then 353 cat /etc/resolv.conf.save > /etc/resolv.conf 354 fi |
| 330 fi 331 ;; 332 333TIMEOUT) 334 delete_old_alias 335 add_new_address 336 sleep 1 337 if [ -n "$new_routers" ]; then 338 $LOGGER "New Routers ($interface): $new_routers" 339 set "$new_routers" 340 if ping -q -c 1 -t 1 "$1"; then 341 if [ "$new_ip_address" != "$alias_ip_address" ]; then 342 add_new_alias 343 fi 344 add_new_routes | 355 fi 356 ;; 357 358TIMEOUT) 359 delete_old_alias 360 add_new_address 361 sleep 1 362 if [ -n "$new_routers" ]; then 363 $LOGGER "New Routers ($interface): $new_routers" 364 set "$new_routers" 365 if ping -q -c 1 -t 1 "$1"; then 366 if [ "$new_ip_address" != "$alias_ip_address" ]; then 367 add_new_alias 368 fi 369 add_new_routes |
| 370 if ! is_default_interface; then 371 exit_with_hooks 0 372 fi |
|
| 345 if add_new_resolv_conf; then 346 exit_with_hooks 0 347 fi 348 fi 349 fi 350 eval "$IFCONFIG $interface inet -alias $new_ip_address $medium" 351 delete_old_routes 352 exit_with_hooks 1 353 ;; 354esac 355 356exit_with_hooks 0 | 373 if add_new_resolv_conf; then 374 exit_with_hooks 0 375 fi 376 fi 377 fi 378 eval "$IFCONFIG $interface inet -alias $new_ip_address $medium" 379 delete_old_routes 380 exit_with_hooks 1 381 ;; 382esac 383 384exit_with_hooks 0 |