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

   1 #!/bin/sh
   2
   3 . /lib/functions.sh
   4 . /lib/functions/network.sh
   5
   6 proto="4"
   7 [ -f /proc/net/ipv6_route ] && proto="4 6"
   8
   9 config_load freifunk-policyrouting
  10 config_get enable pr enable
  11 config_get fallback pr fallback
  12 config_get zones pr zones
  13
  14 if [ "$ACTION" = "ifup" ] && [ "$enable" = "1" ]; then
  15         network_get_subnet net $INTERFACE
  16         network_get_subnet6 net6 $INTERFACE
  17         network_get_physdev dev $INTERFACE
  18
  19         if [ "$net" != "" -a -n "$dev" ]; then
  20                 eval $(/bin/ipcalc.sh $net)
  21                 if [ "$PREFIX" != "0" ]; then
  22                         if [ ! "$(ip r s t olsr-default |grep "throw $NETWORK/$PREFIX")" ]; then
  23                                 ip r a throw $NETWORK/$PREFIX table olsr-default
  24                                 if [ "$?" = 0 ]; then
  25                                         logger -s -t policyrouting "Add route: throw $NETWORK/$PREFIX table olsr-default"
  26                                 else
  27                                         logger -s -t policyrouting "Error! Could not add route: throw $NETWORK/$PREFIX table olsr-default"
  28                                 fi
  29                         fi
  30                 fi
  31
  32                 if [ -n "$net6" ]; then
  33                         if [ ! "$(ip -6 r s t olsr-default |grep "throw $net6")" ]; then
  34                                 rule="throw $net6 table olsr-default dev $dev"
  35                                 ip -6 r a $rule
  36                                 if [ "$?" = 0 ]; then
  37                                         logger -s -t policyrouting "Add route: $rule (IPv6)"
  38                                 else
  39                                         logger -s -t policyrouting "Error! Could not add route: $rule (IPv6)"
  40                                 fi
  41                         fi
  42                 fi
  43
  44                 networks=""
  45                 for z in $zones; do
  46                         network_zone="$(uci -q get firewall.zone_${z}.network)"
  47                         if [ -z "$network_zone" ]; then
  48                                 network_zone="$z"
  49                         fi
  50                         networks="$networks $network_zone"
  51                 done
  52                 for n in $networks; do
  53                         if [ "$INTERFACE" = "$n" ]; then
  54                                 for p in $proto; do
  55                                         if [ ! "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
  56                                                 ip -$p rule add dev "$dev" lookup olsr-default prio 20000
  57                                                 if [ "$?" = 0 ]; then
  58                                                         logger -s -t policyrouting "Use mesh gateway for interface $dev (IPv$p)"
  59                                                         if [ -z "$(uci -P /var/state get freifunk-policyrouting.${INTERFACE})" ]; then
  60                                                                 uci -P /var/state set freifunk-policyrouting.${INTERFACE}="state"
  61                                                         fi
  62                                                         uci -P /var/state set freifunk-policyrouting.${INTERFACE}.device="$dev"
  63                                                 else
  64                                                         logger -s -t policyrouting "Error: Could not add rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  65                                                 fi
  66                                         fi
  67                                 done
  68                         fi
  69                 done
  70         fi
  71 fi
  72
  73 if [ "$ACTION" = "ifdown" ]; then
  74         dev="$(uci -q -P /var/state get freifunk-policyrouting.${INTERFACE}.device)"
  75         if [ -n "$dev" ]; then
  76                 networks=""
  77                 for z in $zones; do
  78                         network_zone="$(uci -q get firewall.zone_${z}.network)"
  79                         if [ -z "$network_zone" ]; then
  80                                 network_zone="$z"
  81                         fi
  82                         networks="$networks $network_zone"
  83                 done
  84                 for n in $networks; do
  85                         if [ "$INTERFACE" = "$n" ]; then
  86                                 for p in $proto; do
  87                                         if [ "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
  88                                                 ip -$p rule del dev "$dev" lookup olsr-default prio 20000
  89                                                 if [ "$?" = 0 ]; then
  90                                                         logger -s -t policyrouting "Remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  91                                                 else
  92                                                         logger -s -t policyrouting "Error! Could not remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  93                                                 fi
  94                                         fi
  95                                 done
  96                         fi
  97                 done
  98         fi
  99 fi