#!/bin/sh [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1 . /etc/functions.sh include /lib/network RESOLV_CONF="/tmp/resolv.conf.auto" change_state () { [ -n "$ifc" ] || return uci_revert_state "$1" "$2" "$3" "$4" uci_set_state "$1" "$2" "$3" "$4" } set_classless_routes() { local max=128 local type while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do [ ${1##*/} -eq 32 ] && type=host || type=net echo "udhcpc: adding route for $type $1 via $2" route add -$type "$1" gw "$2" dev "$interface" max=$(($max-1)) shift 2 done } setup_interface () { local old_ip local old_broadcast local old_subnet local old_router local old_dns local user_dns local user_router local user_metric [ -n "$ifc" ] && { old_ip="$(uci_get_state network "$ifc" ipaddr)" old_broadcast="$(uci_get_state network "$ifc" broadcast)" old_subnet="$(uci_get_state network "$ifc" netmask)" } [ "$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 "${subnet:-255.255.255.0}" } # Default Route [ -n "$ifc" ] && { change_state network "$ifc" lease_gateway "$router" old_router="$(uci_get_state network "$ifc" gateway)" user_router="$(uci_get network "$ifc" gateway)" user_metric="$(uci_get network "$ifc" metric)" [ -n "$user_router" ] && router="$user_router" } [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && [ "$router" != "$old_router" ] && { echo "udhcpc: setting default routers: $router" local valid_gw="" for i in $router ; do route add default gw $i ${user_metric:+metric $user_metric} 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 "$router" } # CIDR STATIC ROUTES (rfc3442) [ -n "$staticroutes" ] && set_classless_routes $staticroutes [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes # DNS old_dns=$(uci_get_state network "$ifc" dns) old_domain=$(uci_get_state network "$ifc" dnsdomain) user_dns=$(uci_get "network.$ifc.dns") [ -n "$user_dns" ] && dns="$user_dns" [ -n "$dns" ] && [ "$dns" != "$old_dns" -o -n "$user_dns" ] && { echo "udhcpc: setting dns servers: $dns" add_dns "$ifc" $dns [ -n "$domain" ] && [ "$domain" != "$old_domain" ] && { echo "udhcpc: setting dns domain: $domain" sed -i -e "${old_domain:+/^search $old_domain$/d; }/^search $domain$/d" "${RESOLV_CONF}" echo "search $domain" >> "${RESOLV_CONF}" change_state network "$ifc" dnsdomain "$domain" } } [ -n "$ifc" ] || return # UCI State change_state network "$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 applied= for ifc in $interfaces __default; do if [ "$ifc" = __default ]; then ifc="" [ -n "$applied" ] && continue else config_get ifname "$ifc" ifname [ "$ifname" = "$interface" ] || continue config_get proto "$ifc" proto [ "$proto" = "dhcp" ] || continue applied=true fi case "$1" in deconfig) ifconfig "$interface" 0.0.0.0 [ -n "$ifc" ] && { env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface config_get device "$ifc" device config_get ifname "$ifc" ifname config_get aliases "$ifc" aliases uci_revert_state network "$ifc" [ -n "$device" ] && uci_set_state network "$ifc" device "$device" [ -n "$ifname" ] && uci_set_state network "$ifc" ifname "$ifname" [ -n "$aliases" ] && uci_set_state network "$ifc" aliases "$aliases" } ;; renew) setup_interface update ;; bound) setup_interface ifup ;; esac done # user rules [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user exit 0