contrib/package/freifunk-policyrouting/files/etc/hotplug.d/iface/30-policyrouting

   1 [ "$INTERFACE" != "wan" ] && exit 0
   2 [ -f /proc/net/ipv6_route ] && has_ipv6=1
   3
   4 case $ACTION in
   5         ifup)
   6                 pr="`uci get freifunk-policyrouting.pr.enable`"
   7                 fallback="`uci get freifunk-policyrouting.pr.fallback`"
   8                 # check if ipv6 is enabled:
   9
  10                 if [ $pr = "1" ]; then
  11                         logger -t policyrouting "Starting policy routing on $INTERFACE"
  12
  13                         # Setup new tables
  14                         tables="/etc/iproute2/rt_tables"
  15                         if [ -z "`grep "111" $tables`" ]; then
  16                                 echo "111 olsr" >> $tables
  17                         fi
  18                         if [ -z "`grep "112" $tables`" ]; then
  19                                 echo "112 olsr-default" >> $tables
  20                         fi
  21
  22                         # Make sure Rt_tables in olsrd are in place
  23                         if [ ! "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ ! "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
  24                                 uci set olsrd.@olsrd[0].RtTable='111'
  25                                 uci set olsrd.@olsrd[0].RtTableDefault='112'
  26                                 uci commit
  27                                 /etc/init.d/olsrd restart
  28                         fi
  29
  30                         # Disable dyn_gw and dyngw_plain
  31                         dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
  32                         if [ -n "$dyngwlib" ]; then
  33                                 uci set $dyngwlib.ignore=1
  34                                 uci commit
  35                         fi
  36
  37                         dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
  38                         if [ -n "$dyngwplainlib" ]; then
  39                                 uci set $dyngwplainlib.ignore=1
  40                                 uci commit
  41                         fi
  42
  43                         gw=`uci -p /var/state get network.wan.gateway`
  44                         netmask=`uci -p /var/state get network.wan.netmask`
  45                         if [ -z "$netmask" ]; then
  46                                 NETMASK="255.255.255.255"
  47                         fi
  48
  49                         if  [ -n "`uci -p /var/state get network.wan.ifname`" ]; then
  50                                 device=`uci -p /var/state get network.wan.ifname`
  51                         else
  52                                 device=`uci -p /var/state get network.wan.device`
  53                         fi
  54
  55                         eval `ipcalc.sh $gw $netmask`
  56
  57                         test -n "`ip r s t default`" && ip r d default t default
  58                         test -n "`ip r s |grep default`" && ip route del default
  59                         ip route add $NETWORK/$NETMASK dev $device table default
  60                         ip route add default via $gw dev $device table default
  61
  62                         if [ "$has_ipv6" = 1 ]; then
  63                                 local ip6gw=$(ip -6 r |grep default |cut -d " " -f 3)
  64                                 test -n "`ip -6 r s t default`" && ip -6 r d default t default
  65                                 if [ -n "`ip -6 r s |grep default`" ]; then
  66                                         ip -6 route del default
  67                                         ip -6 r a $ip6gw via $ip6gw dev $dev table default
  68                                         ip -6 route add default via $ip6gw dev $device table default
  69                                 fi
  70                         fi
  71
  72                         ip rule del lookup main
  73                         ip rule add fwmark 1 lookup olsr-default
  74                         ip rule add lookup main
  75                         ip rule add lookup olsr
  76                         # Fallback via mesh if no ipv4 gateway is found in default table
  77                         [ "$fallback" = 1 ] && ip rule add lookup olsr-default prio 32800
  78
  79                         if [ "$has_ipv6" = 1 ]; then
  80                                 ip -6 rule del lookup main
  81                                 ip -6 rule add lookup olsr prio 16380
  82                                 ip -6 rule add lookup main prio 16390
  83                                 ip -6 rule add fwmark 1 lookup olsr-default prio 16400
  84                                 ip -6 rule add lookup default prio 16410
  85                                 [ "$fallback" = 1 ] && ip -6 rule add lookup olsr-default prio 16420
  86                         fi
  87                 else
  88                         # Remove custom routing tables from olsrd
  89                         if [ "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
  90                                 uci delete olsrd.@olsrd[0].RtTable
  91                                 uci delete olsrd.@olsrd[0].RtTableDefault
  92                                 uci commit
  93                                 /etc/init.d/olsrd restart
  94                         fi
  95                 fi
  96         ;;
  97
  98         ifdown)
  99         logger -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
 100         ip rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
 101         ip rule del lookup olsr-default > /dev/null 2>&1
 102         ip rule del lookup olsr > /dev/null 2>&1
 103         if [ "$has_ipv6" = 1 ]; then
 104                 logger -t policyrouting "Deleting ipv4 policy rules for $INTERFACE"
 105                 ip -6 rule del fwmark 1 lookup olsr-default > /dev/null 2>&1
 106                 ip -6 rule del lookup olsr-default > /dev/null 2>&1
 107                 ip -6 rule del lookup olsr > /dev/null 2>&1
 108                 ip -6 rule del lookup default  > /dev/null 2>&1
 109         fi
 110         ;;
 111 esac