3 # $OpenBSD: src/sbin/dhclient/Attic/dhclient-script,v 1.23 2012/09/18 18:27:55 krw Exp $
5 # Copyright (c) 2003 Kenneth R Westerback <krw@openbsd.org>
7 # Permission to use, copy, modify, and distribute this software for any
8 # purpose with or without fee is hereby granted, provided that the above
9 # copyright notice and this permission notice appear in all copies.
11 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 # Helper functions that implement common actions.
25 delete_old_address
() {
26 if [ -n "$old_ip_address" ]; then
27 ifconfig
$interface inet
$old_ip_address delete
28 #route delete "$old_ip_address" 127.0.0.1 >/dev/null 2>&1
29 if [ -n "$old_classless_routes" ]; then
30 fill_classless_routes
"$old_classless_routes"
32 while [ $# -gt 1 ]; do
33 route delete
"$1" "$2"
42 inet
$new_ip_address \
43 netmask
$new_subnet_mask \
44 broadcast
$new_broadcast_address
46 # XXX Original TIMEOUT code did not do this unless $new_routers was set?
47 #route add $new_ip_address 127.0.0.1 >/dev/null 2>&1
50 fill_classless_routes
() {
52 while [ $# -ge 5 ]; do
55 elif [ $1 -le 8 ]; then
58 elif [ $1 -le 16 ]; then
61 elif [ $1 -le 24 ]; then
65 route
="$2.$3.$4.$5/$1"
66 shift; shift; shift; shift
70 classless_routes
="$classless_routes $route $router"
71 shift; shift; shift; shift
80 # RFC 3442: If the DHCP server returns both a Classless Static
81 # Routes option and a Router option, the DHCP client MUST ignore
84 # DHCP clients that support this option (Classless Static Routes)
85 # MUST NOT install the routes specified in the Static Routes
86 # option (option code 33) if both a Static Routes option and the
87 # Classless Static Routes option are provided.
89 if [ -n "$new_classless_routes" ]; then
90 fill_classless_routes
"$new_classless_routes"
91 $LOGGER "New Classless Static Routes ($interface): $classless_routes"
93 while [ $# -gt 1 ]; do
94 if [ "0.0.0.0" = "$2" ]; then
95 route add
"$1" -iface "$interface"
104 for router
in $new_routers; do
105 route
-q delete default
106 if [ "$new_ip_address" = "$router" ]; then
107 route
-q add default
-iface $router
109 route
-q add default
$router
111 # 2nd and subsequent default routers error out, so explicitly
112 # stop processing the list after the first one.
117 add_new_resolv_conf
() {
118 # Create resolv.conf when either $new_domain_name_servers or
119 # $new_domain_name are provided. As reported in PR#3135, some ISPs
120 # provide only $new_domain_name_servers.
122 rm -f /etc
/resolv.conf.std
124 if [ -n "$new_domain_name" ]; then
125 echo "search $new_domain_name" >>/etc
/resolv.conf.std
128 if [ -n "$new_domain_name_servers" ]; then
129 for nameserver
in $new_domain_name_servers; do
130 echo "nameserver $nameserver" >>/etc
/resolv.conf.std
134 if [ -f /etc
/resolv.conf.std
]; then
135 if [ -f /etc
/resolv.conf.
tail ]; then
136 cat /etc
/resolv.conf.
tail >>/etc
/resolv.conf.std
139 # In case (e.g. during OpenBSD installs) /etc/resolv.conf
140 # is a symbolic link, take care to preserve the link and write
141 # the new data in the correct location.
143 if [ -f /etc
/resolv.conf
]; then
144 cat /etc
/resolv.conf
> /etc
/resolv.conf.save
146 cat /etc
/resolv.conf.std
> /etc
/resolv.conf
147 rm -f /etc
/resolv.conf.std
149 # Try to ensure correct ownership and permissions.
150 chown
-RL root
:wheel
/etc
/resolv.conf
151 chmod -RL 644 /etc
/resolv.conf
160 # Start of active code.
165 # Not called by OpenBSD dhclient(8).
169 # Not called by OpenBSD dhclient(8).
173 # Not called by OpenBSD dhclient(8).
178 # Not called by OpenBSD dhclient(8).
179 # Always succeed. i.e. accept lease.
182 BOUND|RENEW|REBIND|REBOOT
)
183 if [ -n "$old_ip_address" ]; then
184 if [ "$old_ip_address" != "$new_ip_address" ]; then
189 if [ "$reason" = BOUND
] ||
190 [ "$reason" = REBOOT
] ||
191 [ -z "$old_ip_address" ] ||
192 [ "$old_ip_address" != "$new_ip_address" ]; then
200 if [ -n "$old_ip_address" ]; then
204 if [ -f /etc
/resolv.conf.save
]; then
205 cat /etc
/resolv.conf.save
> /etc
/resolv.conf
206 rm -f /etc
/resolv.conf.save
213 if [ -n "$new_routers" ]; then
215 if ping -q -c 1 -w 1 "$1"; then
217 if add_new_resolv_conf
; then
222 ifconfig
$interface inet
$new_ip_address delete
223 # XXX Why not a delete_old_address as before all other invocations of