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-rwxr-xr-xsbin/dhclient-script243
1 files changed, 243 insertions, 0 deletions
diff --git a/sbin/dhclient-script b/sbin/dhclient-script
new file mode 100755
index 0000000..6d5f70a
--- /dev/null
+++ b/sbin/dhclient-script
@@ -0,0 +1,243 @@
+#!/bin/sh
+#
+# $Id$
+#
+# $FreeBSD: src/contrib/isc-dhcp/client/scripts/freebsd,v 1.28 2004/06/26 10:47:38 mbr Exp $
+
+if [ -x /usr/bin/logger ]; then
+ LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
+else
+ LOGGER=echo
+fi
+
+make_resolv_conf() {
+ if [ x"$new_domain_name_servers" != x ]; then
+ if [ "x$new_domain_name" != x ]; then
+ ( echo search $new_domain_name >/etc/resolv.conf )
+ exit_status=$?
+ else
+ ( rm -f /etc/resolv.conf )
+ exit_status=$?
+ fi
+ if [ $exit_status -ne 0 ]; then
+ $LOGGER "WARNING: Unable to update resolv.conf: Error $exit_status"
+ else
+ for nameserver in $new_domain_name_servers; do
+ ( echo nameserver $nameserver >>/etc/resolv.conf )
+ done
+ fi
+ 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_broadcast_address != x ]; then
+ 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
+
+# Get the interface to which our default route is bound to.
+if [ -x /usr/bin/netstat ]; then
+ if_defaultroute=`/usr/bin/netstat -rn \
+ | /usr/bin/grep "^default" \
+ | /usr/bin/awk '{print $6}'`
+else
+ if_defaultroute="x"
+fi
+
+if [ x$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$reason = xREBOOT ]; then
+ current_hostname=`/bin/hostname`
+ if [ x$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
+ $LOGGER "New Hostname: $new_host_name"
+ 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 $router >/dev/null 2>&1
+ done
+ if [ -n "$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 .*$/arp -d \1/p' |sh
+ fi
+ if [ x$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"
+ $LOGGER "New IP Address ($interface): $new_ip_address"
+ $LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
+ $LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
+ if [ -n "$new_routers" ]; then
+ $LOGGER "New Routers: $new_routers"
+ fi
+ route add $new_ip_address 127.1 >/dev/null 2>&1
+ for router in $new_routers; do
+ route add default $router >/dev/null 2>&1
+ done
+ if [ -n "$new_static_routes" ]; then
+ $LOGGER "New Static Routes: $new_static_routes"
+ 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
+ if [ $if_defaultroute = x ] || [ $if_defaultroute = $interface ]; then
+ route delete default $router >/dev/null 2>&1
+ fi
+ done
+ if [ -n "$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 .*$/arp -d \1/p' \
+ |sh >/dev/null 2>&1
+ fi
+ if [ x$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"
+ $LOGGER "New IP Address ($interface): $new_ip_address"
+ $LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
+ $LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
+ sleep 1
+ if [ -n "$new_routers" ]; then
+ $LOGGER "New Routers: $new_routers"
+ set -- $new_routers
+ if ping -q -c 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 $1 $2
+ 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 $router >/dev/null 2>&1
+ done
+ if [ -n "$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 -d \1/p' \
+ |sh >/dev/null 2>&1
+ exit_with_hooks 1
+fi
+
+exit_with_hooks 0
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