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|
#!/bin/sh
make_resolv_conf() {
if [ "x$new_domain_name" != x ] && [ x"$new_domain_name_servers" != x ]; then
echo search $new_domain_name >/etc/resolv.conf
for nameserver in $new_domain_name_servers; do
echo nameserver $nameserver >>/etc/resolv.conf
done
fi
}
# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
exit_status=$1
if [ -f /etc/dhclient-exit-hooks ]; then
. /etc/dhclient-exit-hooks
fi
# probably should do something with exit status of the local script
exit $exit_status
}
# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
exit_status=0
. /etc/dhclient-enter-hooks
# allow the local script to abort processing of this state
# local script must set exit_status variable to nonzero.
if [ $exit_status -ne 0 ]; then
exit $exit_status
fi
fi
if [ x$new_network_number != x ]; then
echo New Network Number: $new_network_number
fi
if [ x$new_broadcast_address != x ]; then
echo New Broadcast Address: $new_broadcast_address
new_broadcast_arg="broadcast $new_broadcast_address"
fi
if [ x$old_broadcast_address != x ]; then
old_broadcast_arg="broadcast $old_broadcast_address"
fi
if [ x$new_subnet_mask != x ]; then
new_netmask_arg="netmask $new_subnet_mask"
fi
if [ x$old_subnet_mask != x ]; then
old_netmask_arg="netmask $old_subnet_mask"
fi
if [ x$alias_subnet_mask != x ]; then
alias_subnet_arg="netmask $alias_subnet_mask"
fi
if [ x$reason = xMEDIUM ]; then
eval "ifconfig $interface $medium"
eval "ifconfig $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1
sleep 1
exit_with_hooks 0
fi
if [ x$reason = xPREINIT ]; then
if [ x$alias_ip_address != x ]; then
ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
broadcast 255.255.255.255 up
exit_with_hooks 0
fi
if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
exit_with_hooks 0;
fi
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
current_hostname=`hostname`
if [ x$current_hostname = x ] || \
[ x$current_hostname = x$old_host_name ]; then
if [ x$current_hostname = x ] || \
[ x$new_host_name != x$old_host_name ]; then
hostname $new_host_name
fi
fi
if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
[ x$alias_ip_address != x$old_ip_address ]; then
ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]
then
eval "ifconfig $interface inet -alias $old_ip_address $medium"
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
if [ "$old_static_routes" != "" ]; then
set $old_static_routes
while [ $# -gt 1 ]; do
route delete $1 $2
shift; shift
done
fi
arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' |sh
fi
if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $medium"
route add $new_ip_address 127.1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router >/dev/null 2>&1
done
if [ "$new_static_routes" != "" ]; then
set $new_static_routes
while [ $# -gt 1 ]; do
route add $1 $2
shift; shift
done
fi
fi
if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
then
ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1
fi
make_resolv_conf
exit_with_hooks 0
fi
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
|| [ x$reason = xSTOP ]; then
if [ x$alias_ip_address != x ]; then
ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ]; then
eval "ifconfig $interface inet -alias $old_ip_address $medium"
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
if [ "$old_static_routes" != "" ]; then
set $old_static_routes
while [ $# -gt 1 ]; do
route delete $1 $2
shift; shift
done
fi
arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' \
|sh >/dev/null 2>&1
fi
if [ x$alias_ip_address != x ]; then
ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1
fi
exit_with_hooks 0
fi
if [ x$reason = xTIMEOUT ]; then
if [ x$alias_ip_address != x ]; then
ifconfig $interface inet -alias $alias_ip_address > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
eval "ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $medium"
sleep 1
if [ "$new_routers" != "" ]; then
set $new_routers
if ping -q -c 1 -w 1 $1; then
if [ x$new_ip_address != x$alias_ip_address ] && \
[ x$alias_ip_address != x ]; then
ifconfig $interface inet alias $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1
fi
route add $new_ip_address 127.1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router >/dev/null 2>&1
done
set $new_static_routes
while [ $# -gt 1 ]; do
route add $0 $1
shift; shift
done
make_resolv_conf
exit_with_hooks 0
fi
fi
eval "ifconfig $interface inet -alias $new_ip_address $medium"
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
if [ "$old_static_routes" != "" ]; then
set $old_static_routes
while [ $# -gt 1 ]; do
route delete $1 $2
shift; shift
done
fi
arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -n -d \1/p' \
|sh >/dev/null 2>&1
exit_with_hooks 1
fi
exit_with_hooks 0
|
