2008-01-11 00:19:03 +00:00
|
|
|
#!/bin/bash
|
2008-08-22 21:05:05 +00:00
|
|
|
#
|
|
|
|
# dhclient-script: Network interface configuration script run by
|
|
|
|
# dhclient based on DHCP client communication
|
|
|
|
#
|
2009-04-13 22:22:38 +00:00
|
|
|
# Copyright (C) 2008, 2009 Red Hat, Inc.
|
2008-08-22 21:05:05 +00:00
|
|
|
#
|
|
|
|
# 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.
|
|
|
|
#
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
# GNU General Public License for more details.
|
|
|
|
#
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#
|
|
|
|
# Author(s): David Cantrell <dcantrell@redhat.com>
|
|
|
|
#
|
|
|
|
# ----------
|
|
|
|
# This script is a rewrite/reworking on dhclient-script originally
|
|
|
|
# included as part of dhcp-970306:
|
2008-01-11 00:19:03 +00:00
|
|
|
# dhclient-script for Linux. Dan Halbert, March, 1997.
|
|
|
|
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
|
|
|
|
# Modified by David Cantrell <dcantrell@redhat.com> for Fedora and RHEL
|
2008-08-22 21:05:05 +00:00
|
|
|
# ----------
|
|
|
|
#
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
PATH=/bin:/usr/bin:/sbin
|
|
|
|
SAVEDIR=/var/lib/dhclient
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
LOGFACILITY="local7"
|
|
|
|
LOGLEVEL="notice"
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-04-13 22:22:38 +00:00
|
|
|
ETCDIR="/etc/dhcp"
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
logmessage() {
|
|
|
|
msg="${1}"
|
|
|
|
logger -p ${LOGFACILITY}.${LOGLEVEL} -t "NET" "dhclient: ${msg}"
|
|
|
|
}
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-03-06 00:57:04 +00:00
|
|
|
fix_context() {
|
|
|
|
if [ -x /sbin/restorecon ]; then
|
|
|
|
/sbin/restorecon ${1} >/dev/null 2>&1
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
save_previous() {
|
|
|
|
origfile="${1}"
|
|
|
|
savefile="${SAVEDIR}/${origfile##*/}.predhclient.${interface}"
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ ! -d ${SAVEDIR} ]; then
|
|
|
|
mkdir -p ${SAVEDIR}
|
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -e ${origfile} ]; then
|
|
|
|
mv ${origfile} ${savefile}
|
2008-01-11 00:19:03 +00:00
|
|
|
else
|
2008-08-22 21:05:05 +00:00
|
|
|
echo > ${savefile}
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
2008-08-06 19:49:47 +00:00
|
|
|
|
2009-03-06 00:57:04 +00:00
|
|
|
fix_context ${savefile}
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
make_resolv_conf() {
|
2008-08-22 21:05:05 +00:00
|
|
|
[ "${PEERDNS}" = "no" ] && return
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ "${reason}" = "RENEW" ] &&
|
|
|
|
[ "${new_domain_name}" = "${old_domain_name}" ] &&
|
|
|
|
[ "${new_domain_name_servers}" = "${old_domain_name_servers}" ]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
return
|
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${new_domain_name}" ] ||
|
|
|
|
[ -n "${new_domain_name_servers}" ] ||
|
|
|
|
[ -n "${new_domain_search}" ]; then
|
2008-08-06 19:49:47 +00:00
|
|
|
save_previous /etc/resolv.conf
|
2008-08-22 21:05:05 +00:00
|
|
|
rscf="$(mktemp /tmp/XXXXXX)"
|
|
|
|
echo "; generated by /sbin/dhclient-script" > ${rscf}
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${SEARCH}" ]; then
|
|
|
|
echo "search ${SEARCH}" >> $rscf
|
2008-08-06 19:49:47 +00:00
|
|
|
else
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${new_domain_search}" ]; then
|
|
|
|
echo "search ${new_domain_search//\\032/ }" >> ${rscf}
|
|
|
|
elif [ -n "${new_domain_name}" ]; then
|
|
|
|
echo "search ${new_domain_name//\\032/ }" >> ${rscf}
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${RES_OPTIONS}" ]; then
|
|
|
|
echo "options ${RES_OPTIONS}" >> ${rscf}
|
2008-07-25 01:21:14 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
for nameserver in ${new_domain_name_servers} ; do
|
|
|
|
echo "nameserver ${nameserver}" >> ${rscf}
|
2008-01-11 00:19:03 +00:00
|
|
|
done
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
change_resolv_conf ${rscf}
|
|
|
|
rm -f ${rscf}
|
2008-10-01 22:38:30 +00:00
|
|
|
|
2009-03-06 00:57:04 +00:00
|
|
|
fix_context /etc/resolv.conf
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
|
|
|
exit_with_hooks() {
|
2008-08-22 21:05:05 +00:00
|
|
|
exit_status="${1}"
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -x ${ETCDIR}/dhclient-exit-hooks ]; then
|
|
|
|
. ${ETCDIR}/dhclient-exit-hooks
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
exit ${exit_status}
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
quad2num() {
|
2008-01-11 00:19:03 +00:00
|
|
|
if [ $# -eq 4 ]; then
|
2008-08-22 21:05:05 +00:00
|
|
|
let n="${1} << 24 | ${2} << 16 | ${3} << 8 | ${4}"
|
|
|
|
echo "${n}"
|
2008-01-11 00:19:03 +00:00
|
|
|
return 0
|
2008-08-22 21:05:05 +00:00
|
|
|
else
|
|
|
|
echo "0"
|
|
|
|
return 1
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
ip2num() {
|
|
|
|
IFS="." quad2num ${1}
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
num2ip() {
|
|
|
|
let n="${1}"
|
|
|
|
let o1="(n >> 24) & 0xff"
|
|
|
|
let o2="(n >> 16) & 0xff"
|
|
|
|
let o3="(n >> 8) & 0xff"
|
|
|
|
let o4="n & 0xff"
|
|
|
|
echo "${o1}.${o2}.${o3}.${o4}"
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
mask() {
|
|
|
|
ip="${1}"
|
|
|
|
m="${2}"
|
|
|
|
let ip="$(IFS="." ip2num ${ip})"
|
|
|
|
let m="$(IFS="." ip2num ${m})"
|
|
|
|
let n="ip & m"
|
|
|
|
num2ip ${n}
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
class_bits() {
|
2008-01-11 00:19:03 +00:00
|
|
|
let ip=$(IFS='.' ip2num $1)
|
|
|
|
let bits=32
|
|
|
|
let mask='255'
|
|
|
|
for ((i=0; i <= 3; i++, 'mask<<=8')); do
|
|
|
|
let v='ip&mask'
|
|
|
|
if [ "$v" -eq 0 ] ; then
|
|
|
|
let bits-=8
|
|
|
|
else
|
|
|
|
break
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
echo $bits
|
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
is_router_reachable() {
|
|
|
|
# handle DHCP servers that give us a router not on our subnet
|
|
|
|
router="${1}"
|
|
|
|
routersubnet="$(mask ${router} ${new_subnet_mask})"
|
|
|
|
mysubnet="$(mask ${new_ip_address} ${new_subnet_mask})"
|
2008-01-11 00:19:03 +00:00
|
|
|
unreachable=0
|
2008-08-22 21:05:05 +00:00
|
|
|
|
|
|
|
if [ ! "${routersubnet}" = "${mysubnet}" ]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
unreachable=1
|
2008-08-22 21:05:05 +00:00
|
|
|
if arping -f -q -I ${interface} -w2 ${router}; then
|
|
|
|
ip route add ${router}/32 dev ${interface}
|
|
|
|
if [ $? -eq 0 ]; then
|
|
|
|
unreachable=0
|
|
|
|
else
|
|
|
|
logmessage "failed to create host router for unreachable router ${router} not on subnet ${mysubnet}"
|
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
else
|
2008-08-22 21:05:05 +00:00
|
|
|
unreachable=1
|
|
|
|
logmessage "DHCP router ${router} is unreachable on DHCP subnet ${mysubnet} router subnet ${routersubnet}"
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
fi
|
2008-08-22 21:05:05 +00:00
|
|
|
|
|
|
|
return ${unreachable}
|
2008-01-11 00:19:03 +00:00
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
add_default_gateway() {
|
|
|
|
router="${1}"
|
|
|
|
metric=""
|
|
|
|
|
2008-08-25 01:31:58 +00:00
|
|
|
if [ $# -gt 1 ] && [ ${2} -gt 0 ]; then
|
2008-08-22 21:05:05 +00:00
|
|
|
metric="metric ${2}"
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
2008-08-22 21:05:05 +00:00
|
|
|
|
|
|
|
if is_router_reachable ${router} ; then
|
|
|
|
ip route replace default via ${router} dev ${interface} ${metric}
|
2008-01-11 00:19:03 +00:00
|
|
|
if [ $? -ne 0 ]; then
|
2008-08-22 21:05:05 +00:00
|
|
|
logmessage "failed to create default route: ${router} dev ${interface} ${metric}"
|
2008-01-11 00:19:03 +00:00
|
|
|
return 1
|
|
|
|
else
|
|
|
|
return 0
|
|
|
|
fi
|
|
|
|
fi
|
2008-08-22 21:05:05 +00:00
|
|
|
|
2008-01-11 00:19:03 +00:00
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
dhconfig() {
|
|
|
|
if [ -n "${old_ip_address}" ] && [ -n "${alias_ip_address}" ] &&
|
|
|
|
[ ! "${alias_ip_address}" = "${old_ip_address}" ]; then
|
|
|
|
# possible new alias, remove old alias first
|
|
|
|
ip -family inet addr del ${old_ip_address} dev ${interface}:0
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${old_ip_address}" ] &&
|
|
|
|
[ ! "${old_ip_address}" = "${new_ip_address}" ]; then
|
|
|
|
# IP address changed. Bringing down the interface will delete all
|
2008-01-11 00:19:03 +00:00
|
|
|
# routes, and clear the ARP cache.
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface} >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
ip -family inet link set dev ${interface} down
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-25 01:31:58 +00:00
|
|
|
if [ "${reason}" = "BOUND" ] || [ "${reason}" = "REBOOT" ] ||
|
2008-08-22 21:05:05 +00:00
|
|
|
[ ! "${old_ip_address}" = "${new_ip_address}" ] ||
|
|
|
|
[ ! "${old_subnet_mask}" = "${new_subnet_mask}" ] ||
|
|
|
|
[ ! "${old_network_number}" = "${new_network_number}" ] ||
|
|
|
|
[ ! "${old_broadcast_address}" = "${new_broadcast_address}" ] ||
|
|
|
|
[ ! "${old_routers}" = "${new_routers}" ] ||
|
|
|
|
[ ! "${old_interface_mtu}" = "${new_interface_mtu}" ]; then
|
|
|
|
ip -family inet addr add ${new_ip_address}/${new_prefix} broadcast ${new_broadcast_address} dev ${interface}
|
|
|
|
|
|
|
|
if [ -n "${new_interface_mtu}" ]; then
|
|
|
|
ip link set ${interface} mtu ${new_interface_mtu}
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -x ${ETCDIR}/dhclient-${interface}-up-hooks ]; then
|
|
|
|
. ${ETCDIR}/dhclient-${interface}-up-hooks
|
|
|
|
elif [ -x ${ETCDIR}/dhclient-up-hooks ]; then
|
|
|
|
. ${ETCDIR}/dhclient-up-hooks
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [[ (( -z "${GATEWAYDEV}" ) ||
|
|
|
|
( "${GATEWAYDEV}" = "${interface}" )) &&
|
|
|
|
(( -z "$GATEWAY" ) ||
|
|
|
|
(( -n "$DHCLIENT_IGNORE_GATEWAY" ) &&
|
|
|
|
( "$DHCLIENT_IGNORE_GATEWAY" = [Yy]* ))) ]]; then
|
2008-08-29 21:52:04 +00:00
|
|
|
metric="${METRIC:-}"
|
2008-08-22 21:05:05 +00:00
|
|
|
let i="${METRIC:-0}"
|
2008-01-11 00:19:03 +00:00
|
|
|
default_routers=()
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
for router in ${new_routers} ; do
|
|
|
|
added_router=-
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
for r in ${default_routers[@]} ; do
|
|
|
|
if [ "${r}" = "${router}" ]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
added_router=1
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -z "${router}" ] ||
|
|
|
|
[ "${added_router}" = "1" ] ||
|
|
|
|
[ $(IFS=. ip2num ${router}) -le 0 ] ||
|
|
|
|
[[ ( "${router}" = "${new_broadcast_address}" ) &&
|
|
|
|
( "${new_subnet_mask}" != "255.255.255.255" ) ]]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
continue
|
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
default_routers=(${default_routers[@]} ${router})
|
|
|
|
add_default_gateway ${router} ${metric}
|
2008-01-11 00:19:03 +00:00
|
|
|
let i=i+1
|
2008-08-22 21:05:05 +00:00
|
|
|
metric=${i}
|
2008-01-11 00:19:03 +00:00
|
|
|
done
|
2008-08-22 21:05:05 +00:00
|
|
|
elif [[ (( -z "${GATEWAYDEV}" ) ||
|
|
|
|
( "${GATEWAYDEV}" = "${interface}" )) &&
|
|
|
|
( -n "${GATEWAY}" ) ]]; then
|
|
|
|
routersubnet=$(mask ${GATEWAY} ${new_subnet_mask})
|
|
|
|
mysubnet=$(mask ${new_ip_address} ${new_subnet_mask})
|
|
|
|
|
|
|
|
if [ "${routersubnet}" = "${mysubnet}" ]; then
|
|
|
|
ip route replace default via ${GATEWAY} dev ${interface}
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
|
|
|
# static routes
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${new_static_routes}" ]; then
|
|
|
|
IFS=', |' static_routes=(${new_static_routes})
|
2008-01-11 00:19:03 +00:00
|
|
|
route_targets=()
|
|
|
|
|
|
|
|
for((i=0; i<${#static_routes[@]}; i+=2)); do
|
|
|
|
target=${static_routes[$i]}
|
|
|
|
gateway=${static_routes[$i+1]}
|
|
|
|
metric=''
|
|
|
|
|
|
|
|
for t in ${route_targets[@]}; do
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ ${t} = ${target} ]; then
|
|
|
|
if [ -z "${metric}" ]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
metric=1
|
|
|
|
else
|
|
|
|
((metric=metric+1))
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${metric}" ]; then
|
|
|
|
metric="metric ${metric}"
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if is_router_reachable ${gateway}; then
|
|
|
|
ip route replace ${target}/$(class_bits ${target}) via ${gateway} dev ${interface} ${metric}
|
2008-01-11 00:19:03 +00:00
|
|
|
|
|
|
|
if [ $? -ne 0 ]; then
|
2008-08-22 21:05:05 +00:00
|
|
|
logmessage "failed to create static route: ${target}/$(class_bits ${target}) via ${gateway} dev ${interface} ${metric}"
|
2008-01-11 00:19:03 +00:00
|
|
|
else
|
2008-08-22 21:05:05 +00:00
|
|
|
route_targets=(${route_targets[@]} ${target})
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ ! "${new_ip_address}" = "${alias_ip_address}" ] &&
|
|
|
|
[ -n "${alias_ip_address}" ]; then
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface}:0 >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
ip -family inet addr add ${alias_ip_address}/${alias_prefix} dev ${interface}:0
|
|
|
|
ip route replace ${alias_ip_address}/32 dev ${interface}:0
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
|
|
|
make_resolv_conf
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${new_host_name}" ] && need_hostname; then
|
|
|
|
hostname ${new_host_name}
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${DHCP_TIME_OFFSET_SETS_TIMEZONE}" ] &&
|
|
|
|
[[ "${DHCP_TIME_OFFSET_SETS_TIMEZONE}" = [yY1]* ]]; then
|
|
|
|
if [ -n "${new_time_offset}" ]; then
|
2008-01-11 00:19:03 +00:00
|
|
|
# DHCP option "time-offset" is requested by default and should be
|
|
|
|
# handled. The geographical zone abbreviation cannot be determined
|
|
|
|
# from the GMT offset, but the $ZONEINFO/Etc/GMT$offset file can be
|
|
|
|
# used - note: this disables DST.
|
|
|
|
((z=new_time_offset/3600))
|
|
|
|
((hoursWest=$(printf '%+d' $z)))
|
|
|
|
|
|
|
|
if (( $hoursWest < 0 )); then
|
|
|
|
# tzdata treats negative 'hours west' as positive 'gmtoff'!
|
|
|
|
((hoursWest*=-1))
|
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
tzfile=/usr/share/zoneinfo/Etc/GMT$(printf '%+d' ${hoursWest})
|
|
|
|
if [ -e ${tzfile} ]; then
|
|
|
|
save_previous /etc/localtime
|
|
|
|
cp -fp ${tzfile} /etc/localtime
|
|
|
|
touch /etc/localtime
|
2009-03-06 00:57:04 +00:00
|
|
|
fix_context /etc/localtime
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2009-02-18 04:12:59 +00:00
|
|
|
# execute any additional client side configuration scripts we have
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -d ${ETCDIR}/dhclient.d ]; then
|
|
|
|
for f in ${ETCDIR}/dhclient.d/*.sh ; do
|
2009-02-18 04:12:59 +00:00
|
|
|
if [ -x ${f} ]; then
|
2009-02-19 03:23:10 +00:00
|
|
|
subsystem="${f%.sh}"
|
2009-03-11 19:12:56 +00:00
|
|
|
subsystem="${subsystem##*/}"
|
|
|
|
. ${f}
|
|
|
|
"${subsystem}_config"
|
2009-02-18 04:12:59 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
done
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2008-12-04 22:08:05 +00:00
|
|
|
get_prefix() {
|
|
|
|
ip="${1}"
|
|
|
|
nm="${2}"
|
|
|
|
|
|
|
|
if [ -n "${ip}" -a -n "${nm}" ]; then
|
|
|
|
ipcalc -s -p ${ip} ${nm} | cut -d '=' -f 2
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
#
|
|
|
|
# ### MAIN
|
|
|
|
#
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -x ${ETCDIR}/dhclient-enter-hooks ]; then
|
2008-08-22 21:05:05 +00:00
|
|
|
exit_status=0
|
|
|
|
|
|
|
|
# dhclient-enter-hooks can abort dhclient-script by setting
|
|
|
|
# the exit_status variable to a non-zero value
|
2009-04-13 22:22:38 +00:00
|
|
|
. ${ETCDIR}/dhclient-enter-hooks
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ ${exit_status} -ne 0 ]; then
|
|
|
|
exit ${exit_status}
|
|
|
|
fi
|
2008-08-23 21:05:07 +00:00
|
|
|
fi
|
2008-08-22 21:05:05 +00:00
|
|
|
|
|
|
|
if [ ! -r /etc/sysconfig/network-scripts/network-functions ]; then
|
|
|
|
echo "Missing /etc/sysconfig/network-scripts/network-functions, exiting." >&2
|
|
|
|
exit 1
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ ! -r /etc/rc.d/init.d/functions ]; then
|
|
|
|
echo "Missing /etc/rc.d/init.d/functions, exiting." >&2
|
|
|
|
exit 1
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
. /etc/sysconfig/network-scripts/network-functions
|
|
|
|
. /etc/rc.d/init.d/functions
|
|
|
|
|
|
|
|
if [ -f /etc/sysconfig/network ]; then
|
|
|
|
. /etc/sysconfig/network
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -f /etc/sysconfig/networking/network ]; then
|
|
|
|
. /etc/sysconfig/networking/network
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-12-04 22:08:05 +00:00
|
|
|
CONFIG="/etc/sysconfig/network-scripts/ifcfg-${interface}"
|
2008-08-22 21:05:05 +00:00
|
|
|
need_config ${CONFIG}
|
2008-12-04 22:08:05 +00:00
|
|
|
source_config >/dev/null 2>&1
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-12-04 22:08:05 +00:00
|
|
|
new_prefix="$(get_prefix ${new_ip_address} ${new_subnet_mask})"
|
|
|
|
old_prefix="$(get_prefix ${old_ip_address} ${new_subnet_mask})"
|
|
|
|
alias_prefix="$(get_prefix ${alias_ip_address} ${alias_subnet_mask})"
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
case "${reason}" in
|
|
|
|
MEDIUM)
|
|
|
|
# Linux doesn't handle mediums (media)
|
|
|
|
exit_with_hooks 0
|
|
|
|
;;
|
|
|
|
|
|
|
|
PREINIT)
|
|
|
|
if [ -n "${alias_ip_address}" ]; then
|
|
|
|
# Bring down alias interface, its routes will disappear too.
|
|
|
|
ip -family inet link set ${interface}:0 down
|
2008-02-08 02:15:14 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ "${keep_old_ip}" = "yes" ]; then
|
|
|
|
ip -family inet link set ${interface} up
|
|
|
|
else
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface} >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
ip -family inet link set ${interface} up
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${DHCLIENT_DELAY}" ] && [ ${DHCLIENT_DELAY} -gt 0 ]; then
|
|
|
|
sleep ${DHCLIENT_DELAY}
|
2008-02-08 02:15:14 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
exit_with_hooks 0
|
|
|
|
;;
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
ARPCHECK|ARPSEND)
|
|
|
|
if [ -z "${new_ip_address}" ] || [ -z "${interface}" ] ||
|
|
|
|
arping -q -f -c 2 -w 3 -D -I ${interface} ${new_ip_address}; then
|
|
|
|
exit_with_hooks 0
|
|
|
|
else
|
|
|
|
exit_with_hooks 1
|
2008-01-11 00:19:03 +00:00
|
|
|
fi
|
2008-08-22 21:05:05 +00:00
|
|
|
;;
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
BOUND|RENEW|REBIND|REBOOT)
|
|
|
|
dhconfig
|
|
|
|
exit_with_hooks 0
|
|
|
|
;;
|
|
|
|
|
|
|
|
EXPIRE|FAIL|RELEASE|STOP)
|
|
|
|
# only restore config files if there are no other dhclient processes
|
|
|
|
# running (#306381)
|
|
|
|
any_other_clients="$(ps -eo pid,ppid,comm | grep dhclient | grep -v ${PPID})"
|
|
|
|
if [ -n "${any_other_clients}" ]; then
|
|
|
|
if [ -f ${SAVEDIR}/resolv.conf.predhclient.${interface} ]; then
|
|
|
|
change_resolv_conf ${SAVEDIR}/resolv.conf.predhclient.${interface}
|
|
|
|
rm -f ${SAVEDIR}/resolv.conf.predhclient.${interface}
|
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${DHCP_TIME_OFFSET_SETS_TIMEZONE}" ] &&
|
|
|
|
[[ "${DHCP_TIME_OFFSET_SETS_TIMEZONE}" = [yY1]* ]]; then
|
|
|
|
if [ -e ${SAVEDIR}/localtime.predhclient.${interface} ]; then
|
|
|
|
rm -f /etc/localtime
|
|
|
|
mv ${SAVEDIR}/localtime.predhclient.${interface} /etc/localtime
|
|
|
|
touch /etc/localtime
|
2009-03-06 00:57:04 +00:00
|
|
|
fix_context /etc/localtime
|
2008-08-22 21:05:05 +00:00
|
|
|
fi
|
|
|
|
fi
|
2009-03-06 00:57:04 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-03-06 00:57:04 +00:00
|
|
|
# execute any additional client side configuration scripts we have
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -d ${ETCDIR}/dhclient.d ]; then
|
|
|
|
for f in ${ETCDIR}/dhclient.d/*.sh ; do
|
2009-03-06 00:57:04 +00:00
|
|
|
if [ -x ${f} ]; then
|
|
|
|
subsystem="${f%.sh}"
|
2009-03-11 19:12:56 +00:00
|
|
|
subsystem="${subsystem##*/}"
|
|
|
|
. ${f}
|
|
|
|
"${subsystem}_restore"
|
2008-08-22 21:05:05 +00:00
|
|
|
fi
|
2009-03-06 00:57:04 +00:00
|
|
|
done
|
2008-08-22 21:05:05 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2009-04-13 22:22:38 +00:00
|
|
|
if [ -x ${ETCDIR}/dhclient-${interface}-down-hooks ]; then
|
|
|
|
. ${ETCDIR}/dhclient-${interface}-down-hooks
|
|
|
|
elif [ -x ${ETCDIR}/dhclient-down-hooks ]; then
|
|
|
|
. ${ETCDIR}/dhclient-down-hooks
|
2008-08-22 21:05:05 +00:00
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${alias_ip_address}" ]; then
|
|
|
|
# Turn off alias interface
|
|
|
|
ip -family inet link set ${interface}:0 down
|
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
if [ -n "${old_ip_address}" ]; then
|
|
|
|
# Shut down interface, which will delete routes and clear arp cache.
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface} >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
ip -family inet link set ${interface} down
|
|
|
|
fi
|
|
|
|
|
|
|
|
if [ -n "${alias_ip_address}" ]; then
|
|
|
|
ip -family inet addr add ${alias_ip_address}/${alias_prefix} dev ${interface}:0
|
|
|
|
ip -family inet route replace ${alias_ip_address}/32 ${interface}:0
|
|
|
|
fi
|
2008-01-11 00:19:03 +00:00
|
|
|
|
|
|
|
exit_with_hooks 0
|
2008-08-22 21:05:05 +00:00
|
|
|
;;
|
2008-01-11 00:19:03 +00:00
|
|
|
|
2008-08-22 21:05:05 +00:00
|
|
|
TIMEOUT)
|
|
|
|
if [ -n "${new_routers}" ]; then
|
|
|
|
if [ -n "${alias_ip_address}" ]; then
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface}:0 >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
fi
|
|
|
|
|
|
|
|
ip -family inet addr add ${new_ip_address}/${new_prefix} broadcast ${new_broadcast_address} dev ${interface}
|
|
|
|
set ${new_routers}
|
|
|
|
|
|
|
|
if ping -q -c 1 -w 10 -I ${interface} ${1}; then
|
|
|
|
dhconfig
|
|
|
|
exit_with_hooks 0
|
|
|
|
fi
|
|
|
|
|
2008-12-04 22:08:05 +00:00
|
|
|
ip -family inet addr flush dev ${interface} >/dev/null 2>&1
|
2008-08-22 21:05:05 +00:00
|
|
|
ip -family inet link set ${interface} down
|
|
|
|
exit_with_hooks 1
|
|
|
|
else
|
|
|
|
exit_with_hooks 1
|
|
|
|
fi
|
|
|
|
;;
|
|
|
|
|
|
|
|
*)
|
|
|
|
logmessage "unhandled state: ${reason}"
|
|
|
|
exit_with_hooks 1
|
|
|
|
;;
|
|
|
|
esac
|
2008-01-11 00:19:03 +00:00
|
|
|
|
|
|
|
exit_with_hooks 0
|