#!/bin/sh [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1 . /etc/functions.sh include /lib/network RESOLV_CONF="/tmp/resolv.conf.auto" change_state () { uci_revert_state "$1" "$2" "$3" "$4" uci_set_state "$1" "$2" "$3" "$4" } uci_get() { uci -P /dev/null get "$1" 2>/dev/null } setup_interface () { local old_ip local old_broadcast local old_subnet local old_router local old_dns local user_dns local user_router config_get old_ip "$ifc" ipaddr config_get old_broadcast "$ifc" broadcast config_get old_subnet "$ifc" netmask [ "$ip" != "$old_ip" ] \ || [ "${broadcast:-+}" != "$old_broadcast" ] \ || [ "${subnet:-255.255.255.0}" != "$old_subnet" ] && { echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}" ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+} change_state network "$ifc" ipaddr "$ip" change_state network "$ifc" broadcast "${broadcast:-+}" change_state network "$ifc" netmask "${subnet:-255.255.255.0}" } # Default Route change_state network "$ifc" lease_gateway "$router" config_get old_router "$ifc" gateway user_router=$(uci_get "network.$ifc.gateway") [ -n "$user_router" ] && router="$user_router" [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "$old_router" ] && { echo "udhcpc: setting default routers: $router" local valid_gw="" for i in $router ; do route add default gw $i dev $interface valid_gw="${valid_gw:+$valid_gw|}$i" done eval $(route -n | awk ' /^0.0.0.0\W{9}('$valid_gw')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"} ') change_state network "$ifc" gateway "$router" } # DNS config_get old_dns "$ifc" dns user_dns=$(uci_get "network.$ifc.dns") [ -n "$user_dns" ] && dns="$user_dns" [ -n "$dns" ] && [ "$dns" != "$old_dns" ] && { echo "udhcpc: setting dns servers: $dns" echo -n > "${RESOLV_CONF}.tmp" for i in $dns ; do echo "nameserver $i" >> "${RESOLV_CONF}.tmp" done ${domain:+echo search $domain} >> "${RESOLV_CONF}.tmp" mv "${RESOLV_CONF}.tmp" "$RESOLV_CONF" change_state network "$ifc" dnsdomain "$domain" change_state network "$ifc" dns "$dns" } # UCI State change_state network "$ifc" lease_server "$serverid" change_state network "$ifc" lease_acquired "$(date '+%s')" change_state network "$ifc" lease_lifetime "$lease" [ -n "$ntpsrv" ] && change_state network "$ifc" lease_ntpsrv "$ntpsrv" [ -n "$timesvr" ] && change_state network "$ifc" lease_timesrv "$timesvr" [ -n "$hostname" ] && change_state network "$ifc" lease_hostname "$hostname" [ -n "$timezone" ] && change_state network "$ifc" lease_timezone "$timezone" # Hotplug env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface } scan_interfaces for ifc in $interfaces; do config_get ifname "$ifc" ifname [ "$ifname" = "$interface" ] || continue config_get proto "$ifc" proto [ "$proto" = "dhcp" ] || continue case "$1" in deconfig) ifconfig "$interface" 0.0.0.0 env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface uci_revert_state network "$ifc" ;; renew) setup_interface update ;; bound) setup_interface ifup ;; esac # user rules [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user done exit 0