Clifford Wolf
17 years ago
5 changed files with 310 additions and 29 deletions
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+292 -0package/base/dhcp/dhclient-script
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+0 -11package/base/dhcp/dhclientscr.patch
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+15 -15package/base/dhcp/dhcp-3.0+paranoia.patch
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+1 -1package/base/dhcp/dhcp.conf
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+2 -2package/base/dhcp/dhcp.desc
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#!/bin/bash |
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# dhclient-script for Linux. Dan Halbert, March, 1997. |
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# Updated for Linux 2.[12] by Brian J. Murrell, January 1999. |
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# No guarantees about this. I'm a novice at the details of Linux |
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# networking. |
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export PATH=/bin:/sbin:/usr/bin:/usr/sbin |
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# Notes: |
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# 0. This script is based on the netbsd script supplied with dhcp-970306. |
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# 1. ifconfig down apparently deletes all relevant routes and flushes |
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# the arp cache, so this doesn't need to be done explicitly. |
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# 2. The alias address handling here has not been tested AT ALL. |
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# I'm just going by the doc of modern Linux ip aliasing, which uses |
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# notations like eth0:0, eth0:1, for each alias. |
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# 3. I have to calculate the network address, and calculate the broadcast |
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# address if it is not supplied. This might be much more easily done |
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# by the dhclient C code, and passed on. |
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# 4. TIMEOUT not tested. ping has a flag I don't know, and I'm suspicious |
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# of the $1 in its args. |
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# 'ip' just looks too weird. /sbin/ip looks less weird. |
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ip=/sbin/ip |
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make_resolv_conf() { |
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if [ x"$new_domain_name_servers" != x ]; then |
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cat /dev/null > /etc/resolv.conf.dhclient |
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chmod 644 /etc/resolv.conf.dhclient |
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if [ x"$new_domain_search" != x ]; then |
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echo search $new_domain_search >> /etc/resolv.conf.dhclient |
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elif [ x"$new_domain_name" != x ]; then |
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# Note that the DHCP 'Domain Name Option' is really just a domain |
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# name, and that this practice of using the domain name option as |
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# a search path is both nonstandard and deprecated. |
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echo search $new_domain_name >> /etc/resolv.conf.dhclient |
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fi |
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for nameserver in $new_domain_name_servers; do |
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echo nameserver $nameserver >>/etc/resolv.conf.dhclient |
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done |
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mv /etc/resolv.conf.dhclient /etc/resolv.conf |
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elif [ "x${new_dhcp6_name_servers}" != x ] ; then |
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cat /dev/null > /etc/resolv.conf.dhclient6 |
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chmod 644 /etc/resolv.conf.dhclient6 |
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if [ "x${new_dhcp6_domain_search}" != x ] ; then |
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echo search ${new_dhcp6_domain_search} >> /etc/resolv.conf.dhclient6 |
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fi |
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for nameserver in ${new_dhcp6_name_servers} ; do |
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echo nameserver ${nameserver} >> /etc/resolv.conf.dhclient6 |
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done |
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mv /etc/resolv.conf.dhclient6 /etc/resolv.conf |
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fi |
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} |
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# Must be used on exit. Invokes the local dhcp client exit hooks, if any. |
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exit_with_hooks() { |
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exit_status=$1 |
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if [ -f /etc/dhclient-exit-hooks ]; then |
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. /etc/dhclient-exit-hooks |
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fi |
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# probably should do something with exit status of the local script |
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exit $exit_status |
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} |
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# Invoke the local dhcp client enter hooks, if they exist. |
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if [ -f /etc/dhclient-enter-hooks ]; then |
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exit_status=0 |
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. /etc/dhclient-enter-hooks |
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# allow the local script to abort processing of this state |
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# local script must set exit_status variable to nonzero. |
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if [ $exit_status -ne 0 ]; then |
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exit $exit_status |
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fi |
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fi |
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release=`uname -r` |
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release=`expr $release : '\(.*\)\..*'` |
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relminor=`echo $release |sed -e 's/[0-9]*\.\([0-9][0-9]*\)\(\..*\)*$/\1/'` |
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relmajor=`echo $release |sed -e 's/\([0-9][0-9]*\)\..*$/\1/'` |
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### |
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### DHCPv4 Handlers |
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### |
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if [ x$new_broadcast_address != x ]; then |
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new_broadcast_arg="broadcast $new_broadcast_address" |
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fi |
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if [ x$old_broadcast_address != x ]; then |
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old_broadcast_arg="broadcast $old_broadcast_address" |
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fi |
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if [ x$new_subnet_mask != x ]; then |
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new_subnet_arg="netmask $new_subnet_mask" |
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fi |
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if [ x$old_subnet_mask != x ]; then |
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old_subnet_arg="netmask $old_subnet_mask" |
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fi |
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if [ x$alias_subnet_mask != x ]; then |
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alias_subnet_arg="netmask $alias_subnet_mask" |
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fi |
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if [ x$reason = xMEDIUM ]; then |
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# Linux doesn't do mediums (ok, ok, media). |
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exit_with_hooks 0 |
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fi |
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if [ x$reason = xPREINIT ]; then |
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if [ x$alias_ip_address != x ]; then |
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# Bring down alias interface. Its routes will disappear too. |
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ifconfig $interface:0- inet 0 |
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fi |
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if [ $relmajor -lt 2 ] || ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ) |
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then |
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ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \ |
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broadcast 255.255.255.255 up |
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# Add route to make broadcast work. Do not omit netmask. |
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route add default dev $interface netmask 0.0.0.0 |
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else |
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ifconfig $interface 0 up |
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fi |
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# We need to give the kernel some time to get the interface up. |
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sleep 1 |
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exit_with_hooks 0 |
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fi |
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if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then |
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exit_with_hooks 0 |
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fi |
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if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \ |
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[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then |
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current_hostname=`hostname` |
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if [ x$current_hostname = x ] || \ |
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[ x$current_hostname = x$old_host_name ]; then |
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if [ x$current_hostname = x ] || \ |
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[ x$new_host_name != x$old_host_name ]; then |
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hostname $new_host_name |
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fi |
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fi |
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if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \ |
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[ x$alias_ip_address != x$old_ip_address ]; then |
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# Possible new alias. Remove old alias. |
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ifconfig $interface:0- inet 0 |
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fi |
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if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then |
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# IP address changed. Bringing down the interface will delete all routes, |
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# and clear the ARP cache. |
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ifconfig $interface inet 0 down |
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fi |
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if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \ |
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[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then |
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ifconfig $interface inet $new_ip_address $new_subnet_arg \ |
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$new_broadcast_arg |
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# Add a network route to the computed network address. |
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if [ $relmajor -lt 2 ] || \ |
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( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then |
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route add -net $new_network_number $new_subnet_arg dev $interface |
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fi |
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for router in $new_routers; do |
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route add default gw $router |
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done |
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fi |
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if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ]; |
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then |
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ifconfig $interface:0- inet 0 |
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ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg |
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route add -host $alias_ip_address $interface:0 |
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fi |
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make_resolv_conf |
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exit_with_hooks 0 |
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fi |
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if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \ |
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|| [ x$reason = xSTOP ]; then |
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if [ x$alias_ip_address != x ]; then |
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# Turn off alias interface. |
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ifconfig $interface:0- inet 0 |
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fi |
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if [ x$old_ip_address != x ]; then |
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# Shut down interface, which will delete routes and clear arp cache. |
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ifconfig $interface inet 0 down |
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fi |
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if [ x$alias_ip_address != x ]; then |
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ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg |
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route add -host $alias_ip_address $interface:0 |
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fi |
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exit_with_hooks 0 |
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fi |
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if [ x$reason = xTIMEOUT ]; then |
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if [ x$alias_ip_address != x ]; then |
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ifconfig $interface:0- inet 0 |
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fi |
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ifconfig $interface inet $new_ip_address $new_subnet_arg \ |
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$new_broadcast_arg |
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set $new_routers |
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if ping -q -c 1 $1; then |
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if [ x$new_ip_address != x$alias_ip_address ] && \ |
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[ x$alias_ip_address != x ]; then |
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ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg |
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route add -host $alias_ip_address dev $interface:0 |
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fi |
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if [ $relmajor -lt 2 ] || \ |
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( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then |
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route add -net $new_network_number |
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fi |
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for router in $new_routers; do |
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route add default gw $router |
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done |
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make_resolv_conf |
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exit_with_hooks 0 |
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fi |
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ifconfig $interface inet 0 down |
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exit_with_hooks 1 |
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fi |
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### |
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### DHCPv6 Handlers |
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### |
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if [ ${reason} = PREINIT6 ] ; then |
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# Ensure interface is up. |
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${ip} link set ${interface} up |
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# Remove any stale addresses from aborted clients. |
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${ip} -f inet6 addr flush dev ${interface} scope global permanent |
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exit_with_hooks 0 |
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fi |
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if [ ${reason} = BOUND6 ] ; then |
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if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then |
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exit_with_hooks 2; |
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fi |
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${ip} -f inet6 addr add ${new_ip6_address}/${new_ip6_prefixlen} \ |
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dev ${interface} scope global |
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# Check for nameserver options. |
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make_resolv_conf |
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exit_with_hooks 0 |
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fi |
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if [ ${reason} = RENEW6 ] || [ ${reason} = REBIND6 ] ; then |
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# Make sure nothing has moved around on us. |
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# Nameservers/domains/etc. |
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if [ "x${new_dhcp6_name_servers}" != "x${old_dhcp6_name_servers}" ] || |
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[ "x${new_dhcp6_domain_search}" != "x${old_dhcp6_domain_search}" ] ; then |
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make_resolv_conf |
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fi |
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exit_with_hooks 0 |
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fi |
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if [ ${reason} = DEPREF6 ] ; then |
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if [ x${new_ip6_prefixlen} = x ] ; then |
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exit_with_hooks 2; |
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fi |
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# There doesn't appear to be a way to update an addr to indicate |
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# preference. |
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# ${ip} -f inet6 addr ??? ${new_ip6_address}/${new_ip6_prefixlen} \ |
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# dev ${interface} scope global deprecated? |
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exit_with_hooks 0 |
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fi |
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if [ ${reason} = EXPIRE6 ] ; then |
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if [ x${old_ip6_address} = x ] || [ x${old_ip6_prefixlen} = x ] ; then |
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exit_with_hooks 2; |
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fi |
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${ip} -f inet6 addr del ${old_ip6_address}/${old_ip6_prefixlen} \ |
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dev ${interface} |
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exit_with_hooks 0 |
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fi |
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exit_with_hooks 0 |
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@ -1,11 +0,0 @@ |
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--- ./client/scripts/linux 2007-05-30 01:50:45.000000000 +0200
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+++ ./client/scripts/linux 2007-05-30 01:51:27.000000000 +0200
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@@ -4,6 +4,8 @@
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# No guarantees about this. I'm a novice at the details of Linux |
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# networking. |
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+export PATH=/bin:/sbin:/usr/bin:/usr/sbin
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+
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# Notes: |
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# 0. This script is based on the netbsd script supplied with dhcp-970306. |
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