221 lines
7.0 KiB
Bash
Executable File
221 lines
7.0 KiB
Bash
Executable File
#!/bin/sh
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# $FreeBSD$
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if [ -x /usr/bin/logger ]; then
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LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
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else
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LOGGER=echo
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fi
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make_resolv_conf() {
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echo "search $new_domain_name" >/etc/resolv.conf
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for nameserver in "$new_domain_name_servers"; do
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echo "nameserver $nameserver" >>/etc/resolv.conf
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done
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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 [ -x /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 [ -x /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 $exit_status
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fi
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fi
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if [ "x$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_netmask_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_netmask_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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ifconfig "$interface" "$medium"
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ifconfig "$interface" inet -alias 0.0.0.0 "$medium" >/dev/null 2>&1
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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$reason" = "xPREINIT" ]; then
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if [ "x$alias_ip_address" != "x" ]; then
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ifconfig "$interface" inet -alias "$alias_ip_address" > /dev/null 2>&1
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route delete "$alias_ip_address" 127.0.0.1 > /dev/null 2>&1
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fi
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ifconfig "$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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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=`/bin/hostname`
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if [ "x$current_hostname" = "x" ] || \
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[ "x$current_hostname" = "x$old_host_name" ]; then
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if [ "x$new_host_name" != "x$old_host_name" ]; then
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$LOGGER "New Hostname: $new_host_name"
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hostname "$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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ifconfig "$interface" inet -alias "$alias_ip_address" > /dev/null 2>&1
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route delete "$alias_ip_address" 127.0.0.1 > /dev/null 2>&1
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fi
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if [ "x$old_ip_address" != "x" ] && [ "x$old_ip_address" != "x$new_ip_address" ]; then
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ifconfig "$interface" inet -alias "$old_ip_address" "$medium"
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route delete "$old_ip_address" 127.1 >/dev/null 2>&1
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for router in "$old_routers"; do
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route delete default "$router" >/dev/null 2>&1
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done
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if [ "$old_static_routes" != "" ]; then
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set $old_static_routes
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while [ $# -gt 1 ]; do
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route delete "$1" "$2"
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shift; shift
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done
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fi
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' |sh
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fi
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if [ "x$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" "$new_netmask_arg" \
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"$new_broadcast_arg" "$medium"
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$LOGGER "New IP Address($interface): $new_ip_address"
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$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
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$LOGGER "New Broadcast Address($interface): $new_broadcast_address"
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if [ "$new_routers" != "" ]; then
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$LOGGER "New Routers: $new_routers"
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fi
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for router in "$new_routers"; do
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route add default "$router" >/dev/null 2>&1
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done
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if [ "$new_static_routes" != "" ]; then
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$LOGGER "New Static Routes: $new_static_routes"
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set $new_static_routes
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while [ $# -gt 1 ]; do
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route add "$1" "$2"
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shift; shift
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done
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fi
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fi
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if [ "x$new_ip_address" != "x$alias_ip_address" ] && [ "x$alias_ip_address" != "x" ];
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then
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ifconfig "$interface" inet alias "$alias_ip_address" "$alias_subnet_arg"
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fi
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echo search "$new_domain_name" >/etc/resolv.conf
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for nameserver in "$new_domain_name_servers"; do
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echo nameserver "$nameserver" >>/etc/resolv.conf
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done
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exit_with_hooks 0
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fi
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if [ "x$reason" = "xEXPIRE" ] || [ "x$reason" = "xFAIL" ]; then
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if [ "x$alias_ip_address" != "x" ]; then
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ifconfig "$interface" inet -alias "$alias_ip_address" > /dev/null 2>&1
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route delete "$alias_ip_address" 127.0.0.1 > /dev/null 2>&1
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fi
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if [ "x$old_ip_address" != "x" ]; then
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ifconfig "$interface" inet -alias "$old_ip_address" "$medium"
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route delete "$old_ip_address" 127.1 >/dev/null 2>&1
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for router in "$old_routers"; do
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route delete default "$router" >/dev/null 2>&1
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done
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if [ "$old_static_routes" != "" ]; then
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set $old_static_routes
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while [ $# -gt 1 ]; do
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route delete "$1" "$2"
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shift; shift
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done
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fi
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \
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|sh >/dev/null 2>&1
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fi
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if [ "x$alias_ip_address" != "x" ]; then
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ifconfig "$interface" inet alias "$alias_ip_address" "$alias_subnet_arg"
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fi
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exit_with_hooks 0
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fi
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if [ "x$reason" = "xTIMEOUT" ]; then
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if [ "x$alias_ip_address" != "x" ]; then
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ifconfig "$interface" inet -alias "$alias_ip_address" > /dev/null 2>&1
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route delete "$alias_ip_address" 127.0.0.1 > /dev/null 2>&1
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fi
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ifconfig "$interface" inet "$new_ip_address" "$new_netmask_arg" \
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"$new_broadcast_arg" "$medium"
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$LOGGER "New IP Address($interface): $new_ip_address"
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$LOGGER "New Subnet Mask($interface): $new_subnet_mask"
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$LOGGER "New Broadcast Address($interface): $new_broadcast_address"
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sleep 1
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if [ "$new_routers" != "" ]; then
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$LOGGER "New Routers: $new_routers"
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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 "$interface" inet alias "$alias_ip_address" "$alias_subnet_arg"
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fi
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for router in "$new_routers"; do
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route add default "$router" >/dev/null 2>&1
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done
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set $new_static_routes
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while [ $# -gt 1 ]; do
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route add "$0" "$1"
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shift; shift
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done
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echo search "$new_domain_name" >/etc/resolv.conf.std
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for nameserver in "$new_domain_name_servers"; do
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echo nameserver "$nameserver" >>/etc/resolv.conf.std
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done
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if [ -f /etc/resolv.conf ]; then
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rm -f /etc/resolv.conf
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fi
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mv /etc/resolv.conf.std /etc/resolv.conf
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exit_with_hooks 0
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fi
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fi
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ifconfig "$interface" inet -alias "$new_ip_address" "$medium"
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for router in "$old_routers"; do
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route delete default "$router" >/dev/null 2>&1
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done
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if [ "$old_static_routes" != "" ]; then
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set $old_static_routes
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while [ $# -gt 1 ]; do
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route delete "$1" "$2"
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shift; shift
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done
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fi
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arp -n -a | sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' \
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|sh >/dev/null 2>&1
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exit_with_hooks 1
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fi
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exit_with_hooks 0
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