contrib/freifunk-policyrouting: Almost complete rewrite, use ip only (no firewall...

[project/luci.git] / contrib / package / freifunk-policyrouting / files / etc / init.d / freifunk-policyrouting

diff --git a/contrib/package/freifunk-policyrouting/files/etc/init.d/freifunk-policyrouting b/contrib/package/freifunk-policyrouting/files/etc/init.d/freifunk-policyrouting
index 58faa67..a8e4424 100755 (executable)
--- a/contrib/package/freifunk-policyrouting/files/etc/init.d/freifunk-policyrouting
+++ b/contrib/package/freifunk-policyrouting/files/etc/init.d/freifunk-policyrouting
@@ -1,13 +1,143 @@
 #!/bin/sh /etc/rc.common
 
-START=60
+START=15
 . /lib/functions/network.sh
-boot()
-{
-       prenabled=$(uci get freifunk-policyrouting.pr.enable)
-       if [ ! "$prenabled" = "1" ] || ! network_is_up wan; then
-               uci -q delete olsrd.@olsrd[0].RtTable
-               uci -q delete olsrd.@olsrd[0].RtTableDefault
+. /lib/functions.sh
+
+proto="4"
+[ -f /proc/net/ipv6_route ] && proto="4 6"
+
+config_load freifunk-policyrouting
+config_get enable pr enable
+config_get fallback pr fallback
+config_get zones pr zones
+
+olsrd_rmtables() {
+       # Remove custom routing tables from olsrd
+       if [ "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
+               uci delete olsrd.@olsrd[0].RtTable
+               uci delete olsrd.@olsrd[0].RtTableDefault
+               uci commit
+       fi
+}
+
+olsrd_intalltables() {
+       if [ ! "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ ! "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
+               uci set olsrd.@olsrd[0].RtTable='111'
+               uci set olsrd.@olsrd[0].RtTableDefault='112'
+               uci commit olsrd
+               /etc/init.d/olsrd restart
+       fi
+}
+
+
+rt_tables() {
+       tables="/etc/iproute2/rt_tables"
+       if [ -z "`grep "111" $tables`" ]; then
+               echo "111 olsr" >> $tables
+       fi
+       if [ -z "`grep "112" $tables`" ]; then
+               echo "112 olsr-default" >> $tables
+       fi
+}
+
+disable_dyngw() {
+       dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
+       if [ -n "$dyngwlib" ]; then
+               uci set $dyngwlib.ignore=1
+               uci commit olsrd
+       fi
+
+       dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
+       if [ -n "$dyngwplainlib" ]; then
+               uci set $dyngwplainlib.ignore=1
                uci commit olsrd
        fi
 }
+
+restart_services() {
+       wifi
+       /etc/init.d/network restart
+       /etc/init.d/olsrd restart
+}
+
+boot() {
+       if [ "$enable" = "1" ]; then
+               [ -d /var/state ] || mkdir -p /var/state
+               touch /var/state/freifunk-policyrouting
+               start
+       else
+               olsrd_rmtables
+       fi
+}
+start() {
+       if [ $enable = "1" ]; then
+               logger -s -t policyrouting "Starting policy routing."
+               rt_tables
+               olsrd_intalltables
+               disable_dyngw
+
+               for p in $proto; do
+                       if [ ! "$(ip -$p ru s | grep "1000:     from all lookup olsr")" ]; then
+                               ip -$p rule add lookup olsr prio 1000
+                               if [ "$?" = "0" ]; then
+                                       logger -s -t policyrouting "Added rule: lookup olsr prio 1000 (IPv$p)"
+                               else
+                                       logger -s -t policyrouting "Error! Could not add rule: lookup olsr prio 1000 (IPv$p)"
+                               fi
+                       fi
+               done
+
+               # add unreachable with high metric so packets stop here if they find no gateway
+               # in table olsr-default
+               if [ "$strict" != 0 ]; then
+                       for p in $proto; do
+                               [ ! "$(ip -$p r s t olsr-default |grep "unreachable default")" ] && {
+                                       ip -$p route add unreachable default table olsr-default metric 65535
+                                       if [ "$?" = "0" ]; then
+                                               logger -s -t policyrouting "Added route: unreachable default table olsr-default metric 65535 (IPv$p)"
+                                       else
+                                               logger -s -t policyrouting "Error! Could not add route: unreachable default table olsr-default metric 65535 (IPv$p)"
+                                       fi
+                               }
+                       done
+
+               fi
+               if [ "$fallback" = 1 ]; then
+                       for p in $proto; do
+                               [ ! "$(ip -$p ru s |grep "from all lookup olsr-default")" ] && {
+                                       ip -$p rule add lookup olsr-default prio 33000
+                                       if [ "$?" = "0" ]; then
+                                               logger -s -t policyrouting "Added rule: olsr-default prio 33000 (IPv$p)"
+                                       else
+                                               logger -s -t policyrouting "Error! Could not add rule: olsr-default prio 33000 (IPv$p)"
+                                       fi
+                               }
+                       done
+               fi
+       fi
+}
+
+stop() {
+       logger -s -t policyrouting "Stopping policy routing"
+       olsrd_rmtables
+       for p in $proto; do
+               ip -$p route flush table olsr-default   
+               ip -$p rule del lookup olsr-default > /dev/null 2>&1
+               ip -$p rule del lookup olsr     > /dev/null 2>&1
+       done
+       restart_services
+       echo "Hint: To completely disable freifunk-policyrouting set enable=0 in /etc/config/freifunk-policyrouting."
+}
+
+restart() {
+       logger -s -t policyrouting "Restarting policy routing"
+       olsrd_rmtables
+       for p in $proto; do
+               ip -$p route flush table olsr-default   
+               ip -$p rule del lookup olsr-default > /dev/null 2>&1
+               ip -$p rule del lookup olsr     > /dev/null 2>&1
+       done
+       start
+       restart_services
+}