contrib/freifunk-policyrouting: Almost complete rewrite, use ip only (no firewall depencies).
This commit is contained in:
Manuel Munz
parent
f804a21c8d
commit
6efd34e9ec
5 changed files with 229 additions and 225 deletions
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@ -4,7 +4,7 @@
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include $(TOPDIR)/rules.mk
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include $(TOPDIR)/rules.mk
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PKG_NAME:=freifunk-policyrouting
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PKG_NAME:=freifunk-policyrouting
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PKG_RELEASE:=1
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PKG_RELEASE:=2
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PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
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PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
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@ -15,7 +15,7 @@ define Package/freifunk-policyrouting
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CATEGORY:=LuCI
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CATEGORY:=LuCI
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SUBMENU:=9. Freifunk
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SUBMENU:=9. Freifunk
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TITLE:=Freifunk policy routing addon
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TITLE:=Freifunk policy routing addon
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DEPENDS:=+firewall +ip
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DEPENDS:=+ip
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endef
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endef
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define Package/freifunk-policyrouting/description
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define Package/freifunk-policyrouting/description
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@ -1,116 +0,0 @@
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if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
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pr=`uci get freifunk-policyrouting.pr.enable`
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strict=`uci get freifunk-policyrouting.pr.strict`
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zones=`uci get freifunk-policyrouting.pr.zones`
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[ -f /proc/net/ipv6_route ] && has_ipv6=1
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if [ $pr = "1" ]; then
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# The wan device name
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if [ -n "`uci -p /var/state get network.wan.ifname`" ]; then
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wandev=`uci -p /var/state get network.wan.ifname`
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else
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wandev=`uci -p /var/state get network.wan.device`
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fi
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iptables -t mangle -D PREROUTING -j prerouting_policy > /dev/null 2>&1
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iptables -t mangle -F prerouting_policy > /dev/null 2>&1
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iptables -t mangle -N prerouting_policy > /dev/null 2>&1
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iptables -t mangle -I PREROUTING -j prerouting_policy > /dev/null 2>&1
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if [ "$has_ipv6" = 1 ]; then
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ip6tables -t mangle -D PREROUTING -j prerouting_policy > /dev/null 2>&1
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ip6tables -t mangle -F prerouting_policy > /dev/null 2>&1
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ip6tables -t mangle -N prerouting_policy > /dev/null 2>&1
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ip6tables -t mangle -I PREROUTING -j prerouting_policy > /dev/null 2>&1
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fi
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# If no route is in table olsr-default, then usually the hosts local default route is used.
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# If set to strict then we add a filter which prevents this
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if [ "$strict" == "1" ]; then
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ln=$(( `iptables -L FORWARD -v --line-numbers | grep -m 1 reject | awk {' print $1 '}` - 1 ))
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if [ ! $ln -gt 0 ]; then
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ln=1
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fi
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if [ -z "`iptables -L |grep 'Chain forward_policy'`" ]; then
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iptables -N forward_policy
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fi
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if [ -z "`iptables -L FORWARD -v |grep forward_policy`" ]; then
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iptables -I FORWARD $ln -m mark --mark 1 -j forward_policy
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fi
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iptables -F forward_policy
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iptables -I forward_policy -o $wandev -j REJECT --reject-with icmp-net-prohibited
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if [ "$has_ipv6" = 1 ]; then
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ln=$(( `ip6tables -L FORWARD -v --line-numbers | grep -m 1 reject | awk {' print $1 '}` - 1 ))
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if [ ! $ln -gt 0 ]; then
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ln=1
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fi
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if [ -z "`ip6tables -L |grep 'Chain forward_policy'`" ]; then
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ip6tables -N forward_policy
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fi
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if [ -z "`ip6tables -L FORWARD -v |grep forward_policy`" ]; then
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ip6tables -I FORWARD $ln -m mark --mark 1 -j forward_policy
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fi
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ip6tables -F forward_policy
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ip6tables -I forward_policy -o $wandev -j REJECT
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fi
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fi
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# set mark 1 for all packets coming in via enabled zones
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for i in $zones; do
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# find out which interfaces belong to this zone
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zone=`uci show firewall |grep "name=$i" |awk {' FS="."; print $1"."$2 '}`
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interfaces=`uci get $zone.network`
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if [ "$interfaces" == "" ]; then
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interfaces=$i
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fi
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for int in $interfaces; do
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if [ "`uci -q get network.$int.type`" == "bridge" ]; then
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dev="br-$int"
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else
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if [ -n "`uci -p /var/state get network.$int.ifname`" ]; then
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dev=`uci -p /var/state get network.$int.ifname`
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else
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dev=`uci -p /var/state get network.$int.device`
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fi
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fi
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logger -t policyrouting "Add mark 1 to packages coming in via interface $dev"
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iptables -t mangle -I prerouting_policy -i $dev -j MARK --set-mark 1
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if [ "$has_ipv6" = 1 ]; then
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ip6tables -t mangle -I prerouting_policy -i $dev -j MARK --set-mark 1
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fi
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done
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done
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else
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# Cleanup policy routing stuff that might be lingering around
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if [ -n "`iptables -t mangle -L PREROUTING |grep _policy`" ]; then
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logger -t policyrouting "Delete prerouting_policy chain in table mangle (IPv4)"
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iptables -t mangle -D PREROUTING -j prerouting_policy
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iptables -t mangle -F prerouting_policy
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iptables -t mangle -X prerouting_policy
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fi
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if [ -n "`iptables -L FORWARD |grep forward_policy`" ]; then
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logger -t policyrouting "Delete strict forwarding rules (IPv4)"
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iptables -D FORWARD -m mark --mark 1 -j forward_policy
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iptables -F forward_policy
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iptables -X forward_policy
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fi
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if [ "$has_ipv6" = 1 ]; then
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if [ -n "`ip6tables -t mangle -L PREROUTING |grep _policy`" ]; then
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logger -t policyrouting "Delete prerouting_policy chain in table mangle (IPv6)"
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ip6tables -t mangle -D PREROUTING -j prerouting_policy
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ip6tables -t mangle -F prerouting_policy
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ip6tables -t mangle -X prerouting_policy
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fi
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if [ -n "`ip6tables -L FORWARD |grep forward_policy`" ]; then
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logger -t policyrouting "Delete strict forwarding rules (IPv6)"
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ip6tables -D FORWARD -m mark --mark 1 -j forward_policy
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ip6tables -F forward_policy
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ip6tables -X forward_policy
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fi
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fi
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logger -t policyrouting "All firewall rules for policyrouting removed."
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fi
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fi
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@ -1,109 +1,99 @@
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[ "$INTERFACE" != "wan" ] && exit 0
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#!/bin/sh
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[ -f /proc/net/ipv6_route ] && has_ipv6=1
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olsrd_rmtables() {
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. /lib/functions.sh
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# Remove custom routing tables from olsrd
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. /lib/functions/network.sh
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if [ "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
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uci delete olsrd.@olsrd[0].RtTable
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uci delete olsrd.@olsrd[0].RtTableDefault
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uci commit
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/etc/init.d/olsrd restart
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fi
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}
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case $ACTION in
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proto="4"
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ifup)
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[ -f /proc/net/ipv6_route ] && proto="4 6"
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pr="`uci get freifunk-policyrouting.pr.enable`"
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fallback="`uci get freifunk-policyrouting.pr.fallback`"
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# check if ipv6 is enabled:
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if [ $pr = "1" ]; then
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config_load freifunk-policyrouting
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logger -s -t policyrouting "Starting policy routing on $INTERFACE"
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config_get enable pr enable
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config_get fallback pr fallback
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config_get zones pr zones
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# Setup new tables
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if [ "$ACTION" = "ifup" ] && [ "$enable" = "1" ]; then
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tables="/etc/iproute2/rt_tables"
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network_get_subnet net $INTERFACE
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if [ -z "`grep "111" $tables`" ]; then
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network_get_subnet6 net6 $INTERFACE
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echo "111 olsr" >> $tables
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network_get_physdev dev $INTERFACE
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fi
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if [ -z "`grep "112" $tables`" ]; then
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echo "112 olsr-default" >> $tables
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fi
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# Make sure Rt_tables in olsrd are in place
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if [ "$net" != "" -a -n "$dev" ]; then
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if [ ! "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ ! "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
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eval $(/bin/ipcalc.sh $net)
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uci set olsrd.@olsrd[0].RtTable='111'
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if [ "$PREFIX" != "0" ]; then
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uci set olsrd.@olsrd[0].RtTableDefault='112'
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if [ ! "$(ip r s t olsr-default |grep "throw $NETWORK/$PREFIX")" ]; then
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uci commit
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ip r a throw $NETWORK/$PREFIX table olsr-default
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/etc/init.d/olsrd restart
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if [ "$?" = 0 ]; then
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fi
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logger -s -t policyrouting "Add route: throw $NETWORK/$PREFIX table olsr-default"
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# Disable dyn_gw and dyngw_plain
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dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
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if [ -n "$dyngwlib" ]; then
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uci set $dyngwlib.ignore=1
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uci commit
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fi
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dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
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if [ -n "$dyngwplainlib" ]; then
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uci set $dyngwplainlib.ignore=1
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uci commit
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fi
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gw="$(ip r |grep default | cut -d " " -f 3)"
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# if no gateway was found stop now
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[ -z "$gw" ] && logger -s -t policyrouting "No gateway found" && exit 1
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device="`uci -q -p /var/state get network.wan.ifname`"
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[ -z "$device" ] && device="`uci -q -p /var/state get network.wan.device`"
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[ -z "$device" ] && logger -s -t policyrouting "No device found for wan." && exit 1
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test -n "`ip r s t default`" && ip r d default t default
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test -n "`ip r s |grep default`" && ip route del default
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ip route add default via $gw dev $device table default
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if [ "$has_ipv6" = 1 ]; then
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local ip6gw=$(ip -6 r |grep default |cut -d " " -f 3)
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test -n "`ip -6 r s t default`" && ip -6 r d default t default
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if [ -n "`ip -6 r s |grep default`" ]; then
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ip -6 route del default
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ip -6 r a $ip6gw via $ip6gw dev $dev table default
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ip -6 route add default via $ip6gw dev $device table default
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fi
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fi
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ip rule del lookup main
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ip rule add fwmark 1 lookup olsr-default
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ip rule add lookup main
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ip rule add lookup olsr
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# Fallback via mesh if no ipv4 gateway is found in default table
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[ "$fallback" = 1 ] && ip rule add lookup olsr-default prio 32800
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if [ "$has_ipv6" = 1 ]; then
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ip -6 rule del lookup main
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ip -6 rule add lookup olsr prio 16380
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ip -6 rule add lookup main prio 16390
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ip -6 rule add fwmark 1 lookup olsr-default prio 16400
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ip -6 rule add lookup default prio 16410
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[ "$fallback" = 1 ] && ip -6 rule add lookup olsr-default prio 16420
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fi
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else
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else
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olsrd_rmtables
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logger -s -t policyrouting "Error! Could not add route: throw $NETWORK/$PREFIX table olsr-default"
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fi
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fi
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fi
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fi
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;;
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ifdown)
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if [ -n "$net6" ]; then
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logger -s -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
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if [ ! "$(ip -6 r s t olsr-default |grep "throw $net6")" ]; then
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olsrd_rmtables
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rule="throw $net6 table olsr-default dev $dev"
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ip rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
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ip -6 r a $rule
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ip rule del lookup olsr-default > /dev/null 2>&1
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if [ "$?" = 0 ]; then
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ip rule del lookup olsr > /dev/null 2>&1
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logger -s -t policyrouting "Add route: $rule (IPv6)"
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if [ "$has_ipv6" = 1 ]; then
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else
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logger -s -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
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logger -s -t policyrouting "Error! Could not add route: $rule (IPv6)"
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ip -6 rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
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fi
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ip -6 rule del lookup olsr-default > /dev/null 2>&1
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fi
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ip -6 rule del lookup olsr > /dev/null 2>&1
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fi
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ip -6 rule del lookup default > /dev/null 2>&1
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networks=""
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for z in $zones; do
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network_zone="$(uci -q get firewall.zone_${z}.network)"
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if [ -z "$network_zone" ]; then
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network_zone="$z"
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fi
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networks="$networks $network_zone"
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done
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for n in $networks; do
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if [ "$INTERFACE" = "$n" ]; then
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for p in $proto; do
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if [ ! "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
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ip -$p rule add dev "$dev" lookup olsr-default prio 20000
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if [ "$?" = 0 ]; then
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logger -s -t policyrouting "Use mesh gateway for interface $dev (IPv$p)"
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if [ -z "$(uci -P /var/state get freifunk-policyrouting.${INTERFACE})" ]; then
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uci -P /var/state set freifunk-policyrouting.${INTERFACE}="state"
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fi
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uci -P /var/state set freifunk-policyrouting.${INTERFACE}.device="$dev"
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else
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logger -s -t policyrouting "Error: Could not add rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
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fi
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fi
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done
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fi
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done
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fi
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fi
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if [ "$ACTION" = "ifdown" ]; then
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dev="$(uci -q -P /var/state get freifunk-policyrouting.${INTERFACE}.device)"
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if [ -n "$dev" ]; then
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networks=""
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for z in $zones; do
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network_zone="$(uci -q get firewall.zone_${z}.network)"
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if [ -z "$network_zone" ]; then
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network_zone="$z"
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fi
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networks="$networks $network_zone"
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done
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for n in $networks; do
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if [ "$INTERFACE" = "$n" ]; then
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for p in $proto; do
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if [ "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
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ip -$p rule del dev "$dev" lookup olsr-default prio 20000
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if [ "$?" = 0 ]; then
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logger -s -t policyrouting "Remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
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else
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logger -s -t policyrouting "Error! Could not remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
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fi
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fi
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done
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fi
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done
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fi
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fi
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fi
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;;
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esac
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@ -1,13 +1,143 @@
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#!/bin/sh /etc/rc.common
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#!/bin/sh /etc/rc.common
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START=60
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START=15
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. /lib/functions/network.sh
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. /lib/functions/network.sh
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boot()
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. /lib/functions.sh
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{
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prenabled=$(uci get freifunk-policyrouting.pr.enable)
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proto="4"
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if [ ! "$prenabled" = "1" ] || ! network_is_up wan; then
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[ -f /proc/net/ipv6_route ] && proto="4 6"
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uci -q delete olsrd.@olsrd[0].RtTable
|
|
||||||
uci -q delete olsrd.@olsrd[0].RtTableDefault
|
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 $dyngwplainlib.ignore=1
|
||||||
uci commit olsrd
|
uci commit olsrd
|
||||||
fi
|
fi
|
||||||
}
|
}
|
||||||
|
|
||||||
|
restart_services() {
|
||||||
|
wifi
|
||||||
|
/etc/init.d/network restart
|
||||||
|
/etc/init.d/olsrd restart
|
||||||
|
}
|
||||||
|
|
||||||
|
boot() {
|
||||||
|
if [ "$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
|
||||||
|
}
|
||||||
|
|
|
||||||
|
|
@ -1,7 +1,7 @@
|
||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
uci batch <<-EOF
|
uci batch <<-EOF
|
||||||
add ucitrack freifunk-policyrouting
|
add ucitrack freifunk-policyrouting
|
||||||
add_list ucitrack.@freifunk-policyrouting[-1].affects="network"
|
add_list ucitrack.@freifunk-policyrouting[-1].exec="/etc/init.d/freifunk-policyrouting restart"
|
||||||
commit ucitrack
|
commit ucitrack
|
||||||
EOF
|
EOF
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue