package/luci/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 strict pr strict
  13 config_get zones pr zones
  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 "$dev" lookup olsr-default prio 20000
  57                                                 if [ "$strict" != 0 ]; then
  58                                                         ip -$p rule add dev "$dev" unreachable prio 20001
  59                                                 fi
  60                                                 if [ "$?" = 0 ]; then
  61                                                         logger -s -t policyrouting "Use mesh gateway for interface $dev (IPv$p)"
  62                                                         if [ -z "$(uci -P /var/state get freifunk-policyrouting.${INTERFACE})" ]; then
  63                                                                 uci -P /var/state set freifunk-policyrouting.${INTERFACE}="state"
  64                                                         fi
  65                                                         uci -P /var/state set freifunk-policyrouting.${INTERFACE}.device="$dev"
  66                                                 else
  67                                                         logger -s -t policyrouting "Error: Could not add rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  68                                                 fi
  69                                         fi
  70                                 done
  71                         fi
  72                 done
  73         fi
  74
  75 fi
  76
  77 if [ "$ACTION" = "ifdown" ]; then
  78         dev="$(uci -q -P /var/state get freifunk-policyrouting.${INTERFACE}.device)"
  79         if [ -n "$dev" ]; then
  80                 networks=""
  81                 for z in $zones; do
  82                         network_zone="$(uci -q get firewall.zone_${z}.network)"
  83                         if [ -z "$network_zone" ]; then
  84                                 network_zone="$z"
  85                         fi
  86                         networks="$networks $network_zone"
  87                 done
  88                 for n in $networks; do
  89                         if [ "$INTERFACE" = "$n" ]; then
  90                                 for p in $proto; do
  91                                         if [ "$(ip -$p ru s | grep "from all iif $dev lookup olsr-default")" ]; then
  92                                                 ip -$p rule del dev "$dev" lookup olsr-default prio 20000
  93                                                 ip -$p rule del dev "$dev" unreachable prio 20001
  94                                                 if [ "$?" = 0 ]; then
  95                                                         logger -s -t policyrouting "Remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  96                                                 else
  97                                                         logger -s -t policyrouting "Error! Could not remove rule: dev "$dev" lookup olsr-default prio 20000 (IPv$p)"
  98                                                 fi
  99                                         fi
 100                                 done
 101                         fi
 102                 done
 103         fi
 104 fi