diff options
| -rwxr-xr-x | package/base-files/files/usr/share/udhcpc/default.script | 190 |
1 files changed, 116 insertions, 74 deletions
diff --git a/package/base-files/files/usr/share/udhcpc/default.script b/package/base-files/files/usr/share/udhcpc/default.script index 84c7297..7dfb0f9 100755 --- a/package/base-files/files/usr/share/udhcpc/default.script +++ b/package/base-files/files/usr/share/udhcpc/default.script @@ -1,85 +1,127 @@ #!/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" -hotplug_event() { - scan_interfaces - for ifc in $interfaces; do - config_get ifname $ifc ifname - [ "$ifname" = "$interface" ] || continue - - config_get proto $ifc proto - [ "$proto" = "dhcp" ] || continue - [ ifup = "$1" ] && { - config_get userdns "$ifc" dns - [ -n "$userdns" ] && { - for i in $userdns; do - echo "custom dns $i" - echo "nameserver $i" >> "${RESOLV_CONF}.tmp" - done - dns="$userdns" - } - uci_set_state network "$ifc" ipaddr "$ip" - uci_set_state network "$ifc" netmask "${subnet:-255.255.255.0}" - uci_set_state network "$ifc" dnsdomain "$domain" - uci_set_state network "$ifc" dns "$dns" - uci_set_state network "$ifc" gateway "$router" - } - - env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface - done +change_state () { + uci_revert_state "$1" "$2" "$3" "$4" + uci_set_state "$1" "$2" "$3" "$4" } -case "$1" in - deconfig) - ifconfig $interface 0.0.0.0 - hotplug_event ifdown - ;; - renew|bound) - ifconfig $interface $ip \ - netmask ${subnet:-255.255.255.0} \ - broadcast ${broadcast:-+} - - [ -n "$router" ] && { - for i in $router ; do - echo "adding router $i" - route add default gw $i dev $interface - valid="$valid|$i" - - done - - echo "deleting old routes" - $(route -n | awk '/^0.0.0.0\W{9}('$valid')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}') - } - - [ -n "$dns" ] && \ - echo -n > "${RESOLV_CONF}.tmp" +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 - [ -n "$dns" ] && { - [ -s "${RESOLV_CONF}.tmp" ] || { - for i in $dns ; do - echo "adding dns $i" - echo "nameserver $i" >> "${RESOLV_CONF}.tmp" - done - } - - ${domain:+echo search $domain} >> "${RESOLV_CONF}.tmp" - - mv "${RESOLV_CONF}.tmp" "$RESOLV_CONF" - } - - if [ "$1" = "renew" ]; then - hotplug_event update - else - hotplug_event ifup - fi - - # user rules - [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user - ;; -esac + 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 |