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
  15 if [ "$ACTION" = "ifup" ] && [ "$enable" = "1" ]; then
  16         network_get_subnet net $INTERFACE
  17         network_get_subnet6 net6 $INTERFACE
  18         network_get_physdev dev $INTERFACE
  19
  20         if [ "$net" != "" -a -n "$dev" ]; then
  21                 eval $(/bin/ipcalc.sh $net)
  22                 if [ "$PREFIX" != "0" -a "$NETWORK" != "127.0.0.0" ]; then
  23                         if [ ! "$(ip r s t localnets |grep "$NETWORK/$PREFIX dev")" ]; then
  24                                 cmd="ip r a $NETWORK/$PREFIX dev $dev table localnets"
  25                                 $cmd
  26                                 if [ "$?" = 0 ]; then
  27                                         logger -s -t policyrouting "Add route: $cmd"
  28                                 else
  29                                         logger -s -t policyrouting "Error! Could not add route: $cmd"
  30                                 fi
  31                         fi
  32
  33                 fi
  34
  35                 if [ -n "$net6" ]; then
  36                         cmd="ip -6 r a $net6 dev $dev table localnets"
  37                         $cmd 2>&1 > /dev/null
  38                         if [ "$?" = 0 ]; then
  39                                 logger -s -t policyrouting "Add route: $cmd (IPv6)"
  40                         fi
  41
  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$p)"
  65                                                 fi
  66                                         fi
  67                                 done
  68                         fi
  69                 done
  70         fi
  71
  72 fi
  73
  74 if [ "$ACTION" = "ifdown" ]; then
  75         dev="$(uci -q -P /var/state get freifunk-policyrouting.${INTERFACE}.device)"
  76         if [ -n "$dev" ]; then
  77                 networks=""
  78                 for z in $zones; do
  79                         network_zone="$(uci -q get firewall.zone_${z}.network)"
  80                         if [ -z "$network_zone" ]; then
  81                                 network_zone="$z"
  82                         fi
  83                         networks="$networks $network_zone"
  84                 done
  85                 for n in $networks; do
  86                         if [ "$INTERFACE" = "$n" ]; then
  87                                 for p in $proto; do
  88                                         if [ "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
  89                                                 ip -$p rule del dev "$dev" lookup olsr-default prio 20000
  90                                                 if [ "$?" = 0 ]; then
  91                                                         logger -s -t policyrouting "Remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  92                                                 else
  93                                                         logger -s -t policyrouting "Error! Could not remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  94                                                 fi
  95                                         fi
  96                                 done
  97                         fi
  98                 done
  99         fi
 100 fi