X-Git-Url: http://git.onelab.eu/?p=iproute2.git;a=blobdiff_plain;f=examples%2Fdhcp-client-script;fp=examples%2Fdhcp-client-script;h=0000000000000000000000000000000000000000;hp=7207b57d2f46944556354748b673d9a50c7eb1de;hb=3331a68859fd71047bb1f309048960b48eab2d83;hpb=2bd4a72f2100be7ad7d9518cb1d49bb2a5b71994 diff --git a/examples/dhcp-client-script b/examples/dhcp-client-script deleted file mode 100755 index 7207b57..0000000 --- a/examples/dhcp-client-script +++ /dev/null @@ -1,446 +0,0 @@ -#!/bin/bash -# -# dhclient-script for Linux. -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License -# as published by the Free Software Foundation; either version -# 2 of the License, or (at your option) any later version. -# -# Authors: Alexey Kuznetsov, -# -# Probably, I did not understand, what this funny feature as "alias" -# means exactly. For now I suppose, that it is a static address, which -# we should install and preserve. -# - -exec >> /tmp/DHS.log 2>&1 - -echo dhc-script $* reason=$reason -set | grep "^\(old_\|new_\|check_\)" - -LOG () { - echo LOG $* ; -} - -# convert 8bit mask to length -# arg: $1 = mask -# -Mask8ToLen() { - local l=0; - - while [ $l -le 7 ]; do - if [ $[ ( 1 << $l ) + $1 ] -eq 256 ]; then - return $[ 8 - $l ] - fi - l=$[ $l + 1 ] - done - return 0; -} - -# convert inet dotted quad mask to length -# arg: $1 = dotquad mask -# -MaskToLen() { - local masklen=0 - local mask8=$1 - - case $1 in - 0.0.0.0) - return 0; - ;; - 255.*.0.0) - masklen=8 - mask8=${mask8#255.} - mask8=${mask8%.0.0} - ;; - 255.255.*.0) - masklen=16 - mask8=${mask8#255.255.} - mask8=${mask8%.0} - ;; - 255.255.255.*) - masklen=24 - mask8=${mask8#255.255.255.} - ;; - *) - return 255 - ;; - esac - Mask8ToLen $mask8 - return $[ $? + $masklen ] -} - -# calculate ABC "natural" mask -# arg: $1 = dotquad address -# -ABCMask () { - local class; - - class=${1%%.*} - - if [ "$1" = "255.255.255.255" ]; then - echo $1 - elif [ "$1" = "0.0.0.0" ]; then - echo $1 - elif [ $class -ge 224 ]; then - echo 240.0.0.0 - elif [ $class -ge 192 ]; then - echo 255.255.255.0 - elif [ $class -ge 128 ]; then - echo 255.255.0.0 - else - echo 255.0.0.0 - fi -} - -# calculate ABC "natural" mask length -# arg: $1 = dotquad address -# -ABCMaskLen () { - local class; - - class=${1%%.*} - - if [ "$1" = "255.255.255.255" ]; then - return 32 - elif [ "$1" = "0.0.0.0" ]; then - return 0 - elif [ $class -ge 224 ]; then - return 4; - elif [ $class -ge 192 ]; then - return 24; - elif [ $class -ge 128 ]; then - return 16; - else - return 8; - fi -} - -# Delete IP address -# args: $1 = interface -# $2 = address -# $3 = mask -# $4 = broadcast -# $5 = label -# -DelINETAddr () { - local masklen=32 - local addrid=$1 - - LOG DelINETAddr $* - - if [ "$5" ]; then - addrid=$addrid:$5 - fi - LOG ifconfig $addrid down - ifconfig $addrid down -} - -# Add IP address -# args: $1 = interface -# $2 = address -# $3 = mask -# $4 = broadcast -# $5 = label -# -AddINETAddr () { - local mask_arg - local brd_arg - local addrid=$1 - - LOG AddINETAddr $* - - if [ "$5" ]; then - addrid=$addrid:$5 - fi - if [ "$3" ]; then - mask_arg="netmask $3" - fi - if [ "$4" ]; then - brd_arg="broadcast $4" - fi - - LOG ifconfig $addrid $2 $mask_arg $brd_arg up - ifconfig $addrid $2 $mask_arg $brd_arg up -} - -# Add default routes -# args: $1 = routers list -# -AddDefaultRoutes() { - local router - - if [ "$1" ]; then - LOG AddDefaultRoutes $* - for router in $1; do - LOG route add default gw $router - route add default gw $router - done ; - fi -} - -# Delete default routes -# args: $1 = routers list -# -DelDefaultRoutes() { - local router - - if [ "$1" ]; then - LOG DelDefaultRoutes $* - - for router in $1; do - LOG route del default gw $router - route del default gw $router - done - fi -} - -# ping a host -# args: $1 = dotquad address of the host -# -PingNode() { - LOG PingNode $* - if ping -q -c 1 -w 2 $1 ; then - return 0; - fi - return 1; -} - -# Check (and add route, if alive) default routers -# args: $1 = routers list -# returns: 0 if at least one router is alive. -# -CheckRouterList() { - local router - local succeed=1 - - LOG CheckRouterList $* - - for router in $1; do - if PingNode $router ; then - succeed=0 - route add default gw $router - fi - done - return $succeed -} - -# Delete/create static routes. -# args: $1 = operation (del/add) -# $2 = routes list in format "dst1 nexthop1 dst2 ..." -# -# BEWARE: this feature of DHCP is obsolete, because does not -# support subnetting. -# -X-StaticRouteList() { - local op=$1 - local lst="$2" - local masklen - - LOG X-StaticRouteList $* - - if [ "$lst" ]; then - set $lst - while [ $# -gt 1 ]; do - route $op -net $1 netmask `ABCMask "$1"` gw $2 - shift; shift; - done - fi -} - -# Create static routes. -# arg: $1 = routes list in format "dst1 nexthop1 dst2 ..." -# -AddStaticRouteList() { - LOG AddStaticRouteList $* - X-StaticRouteList add "$1" -} - -# Delete static routes. -# arg: $1 = routes list in format "dst1 nexthop1 dst2 ..." -# -DelStaticRouteList() { - LOG DelStaticRouteList $* - X-StaticRouteList del "$1" -} - -# Broadcast unsolicited ARP to update neighbours' caches. -# args: $1 = interface -# $2 = address -# -UnsolicitedARP() { - if [ -f /sbin/arping ]; then - /sbin/arping -A -c 1 -I "$1" "$2" & - (sleep 2 ; /sbin/arping -U -c 1 -I "$1" "$2" ) & - fi -} - -# Duplicate address detection. -# args: $1 = interface -# $2 = test address -# returns: 0, if DAD succeeded. -DAD() { - if [ -f /sbin/arping ]; then - /sbin/arping -c 2 -w 3 -D -I "$1" "$2" - return $? - fi - return 0 -} - - -# Setup resolver. -# args: NO -# domain and nameserver list are passed in global variables. -# -# NOTE: we try to be careful and not to break user supplied resolv.conf. -# The script mangles it, only if it has dhcp magic signature. -# -UpdateDNS() { - local nameserver - local idstring="#### Generated by DHCPCD" - - LOG UpdateDNS $* - - if [ "$new_domain_name" = "" -a "$new_domain_name_servers" = "" ]; then - return 0; - fi - - echo $idstring > /etc/resolv.conf.dhcp - if [ "$new_domain_name" ]; then - echo search $new_domain_name >> /etc/resolv.conf.dhcp - fi - echo options ndots:1 >> /etc/resolv.conf.dhcp - - if [ "$new_domain_name_servers" ]; then - for nameserver in $new_domain_name_servers; do - echo nameserver $nameserver >> /etc/resolv.conf.dhcp - done - else - echo nameserver 127.0.0.1 >> /etc/resolv.conf.dhcp - fi - - if [ -f /etc/resolv.conf ]; then - if [ "`head -1 /etc/resolv.conf`" != "$idstring" ]; then - return 0 - fi - if [ "$old_domain_name" = "$new_domain_name" -a - "$new_domain_name_servers" = "$old_domain_name_servers" ]; then - return 0 - fi - fi - mv /etc/resolv.conf.dhcp /etc/resolv.conf -} - -case $reason in -NBI) - exit 1 - ;; - -MEDIUM) - exit 0 - ;; - -PREINIT) - ifconfig $interface:dhcp down - ifconfig $interface:dhcp1 down - if [ -d /proc/sys/net/ipv4/conf/$interface ]; then - ifconfig $interface:dhcp 10.10.10.10 netmask 255.255.255.255 - ifconfig $interface:dhcp down - if [ -d /proc/sys/net/ipv4/conf/$interface ]; then - LOG The interface $interface already configured. - fi - fi - ifconfig $interface:dhcp up - exit 0 - ;; - -ARPSEND) - exit 0 - ;; - -ARPCHECK) - if DAD "$interface" "$check_ip_address" ; then - exit 0 - fi - exit 1 - ;; - -BOUND|RENEW|REBIND|REBOOT) - if [ "$old_ip_address" -a "$alias_ip_address" -a \ - "$alias_ip_address" != "$old_ip_address" ]; then - DelINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - if [ "$old_ip_address" -a "$old_ip_address" != "$new_ip_address" ]; then - DelINETAddr "$interface" "$old_ip_address" "$old_subnet_mask" "$old_broadcast_address" dhcp - DelDefaultRoutes "$old_routers" - DelStaticRouteList "$old_static_routes" - fi - if [ "$old_ip_address" = "" -o "$old_ip_address" != "$new_ip_address" -o \ - "$reason" = "BOUND" -o "$reason" = "REBOOT" ]; then - AddINETAddr "$interface" "$new_ip_address" "$new_subnet_mask" "$new_broadcast_address" dhcp - AddStaticRouteList "$new_static_routes" - AddDefaultRoutes "$new_routers" - UnsolicitedARP "$interface" "$new_ip_address" - fi - if [ "$new_ip_address" != "$alias_ip_address" -a "$alias_ip_address" ]; then - AddINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - UpdateDNS - exit 0 - ;; - -EXPIRE|FAIL) - if [ "$alias_ip_address" ]; then - DelINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - if [ "$old_ip_address" ]; then - DelINETAddr "$interface" "$old_ip_address" "$old_subnet_mask" "$old_broadcast_address" dhcp - DelDefaultRoutes "$old_routers" - DelStaticRouteList "$old_static_routes" - fi - if [ "$alias_ip_address" ]; then - AddINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - exit 0 - ;; - -TIMEOUT) - if [ "$alias_ip_address" ]; then - DelINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi -# Seems, means, that no more old leases found. -# Or does it mean bug in dhcpcd? 8) Fail for now. - if [ "$new_ip_address" = "" ]; then - if [ "$old_ip_address" ]; then - DelINETAddr "$interface" "$old_ip_address" "$old_subnet_mask" "$old_broadcast_address" dhcp - fi - if [ "$alias_ip_address" ]; then - AddINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - exit 1 - fi - if DAD "$interface" "$new_ip_address" ; then - AddINETAddr "$interface" "$new_ip_address" "$new_subnet_mask" "$new_broadcast_address" dhcp - UnsolicitedARP "$interface" "$new_ip_address" - if [ "$alias_ip_address" -a "$alias_ip_address" != "$new_ip_address" ]; then - AddINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - UnsolicitedARP "$interface" "$alias_ip_address" - fi - if CheckRouterList "$new_routers" ; then - AddStaticRouteList "$new_static_routes" - UpdateDNS - exit 0 - fi - fi - DelINETAddr "$interface" "$new_ip_address" "$new_subnet_mask" "$new_broadcast_address" dhcp - DelDefaultRoutes "$old_routers" - DelStaticRouteList "$old_static_routes" - if [ "$alias_ip_address" ]; then - AddINETAddr "$interface" "$alias_ip_address" "$alias_subnet_mask" "$alias_broadcast_address" dhcp1 - fi - exit 1 - ;; -esac - -exit 0