contrib/package/freifunk-policyrouting/files/etc/init.d/freifunk-policyrouting

   1 #!/bin/sh /etc/rc.common
   2
   3 START=15
   4 . /lib/functions/network.sh
   5 . /lib/functions.sh
   6
   7 proto="4"
   8 [ -f /proc/net/ipv6_route ] && proto="4 6"
   9
  10 config_load freifunk-policyrouting
  11 config_get enable pr enable
  12 config_get fallback pr fallback
  13 config_get zones pr zones
  14
  15 olsrd_rmtables() {
  16         # Remove custom routing tables from olsrd
  17         if [ "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
  18                 uci delete olsrd.@olsrd[0].RtTable
  19                 uci delete olsrd.@olsrd[0].RtTableDefault
  20                 uci commit
  21         fi
  22 }
  23
  24 olsrd_intalltables() {
  25         if [ ! "`uci -q get olsrd.@olsrd[0].RtTable`" == "111" ] || [ ! "`uci -q get olsrd.@olsrd[0].RtTableDefault`" == "112" ]; then
  26                 uci set olsrd.@olsrd[0].RtTable='111'
  27                 uci set olsrd.@olsrd[0].RtTableDefault='112'
  28                 uci commit olsrd
  29                 /etc/init.d/olsrd restart
  30         fi
  31 }
  32
  33
  34 rt_tables() {
  35         tables="/etc/iproute2/rt_tables"
  36         if [ -z "`grep "111" $tables`" ]; then
  37                 echo "111 olsr" >> $tables
  38         fi
  39         if [ -z "`grep "112" $tables`" ]; then
  40                 echo "112 olsr-default" >> $tables
  41         fi
  42 }
  43
  44 disable_dyngw() {
  45         dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
  46         if [ -n "$dyngwlib" ]; then
  47                 uci set $dyngwlib.ignore=1
  48                 uci commit olsrd
  49         fi
  50
  51         dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
  52         if [ -n "$dyngwplainlib" ]; then
  53                 uci set $dyngwplainlib.ignore=1
  54                 uci commit olsrd
  55         fi
  56 }
  57
  58 restart_services() {
  59         wifi
  60         /etc/init.d/network restart
  61         /etc/init.d/olsrd restart
  62 }
  63
  64 boot() {
  65         if [ "$enable" = "1" ]; then
  66                 [ -d /var/state ] || mkdir -p /var/state
  67                 touch /var/state/freifunk-policyrouting
  68                 start
  69         else
  70                 olsrd_rmtables
  71         fi
  72 }
  73 start() {
  74         if [ $enable = "1" ]; then
  75                 logger -s -t policyrouting "Starting policy routing."
  76                 rt_tables
  77                 olsrd_intalltables
  78                 disable_dyngw
  79
  80                 for p in $proto; do
  81                         if [ ! "$(ip -$p ru s | grep "1000:     from all lookup olsr")" ]; then
  82                                 ip -$p rule add lookup olsr prio 1000
  83                                 if [ "$?" = "0" ]; then
  84                                         logger -s -t policyrouting "Added rule: lookup olsr prio 1000 (IPv$p)"
  85                                 else
  86                                         logger -s -t policyrouting "Error! Could not add rule: lookup olsr prio 1000 (IPv$p)"
  87                                 fi
  88                         fi
  89                 done
  90
  91                 # add unreachable with high metric so packets stop here if they find no gateway
  92                 # in table olsr-default
  93                 if [ "$strict" != 0 ]; then
  94                         for p in $proto; do
  95                                 [ ! "$(ip -$p r s t olsr-default |grep "unreachable default")" ] && {
  96                                         ip -$p route add unreachable default table olsr-default metric 65535
  97                                         if [ "$?" = "0" ]; then
  98                                                 logger -s -t policyrouting "Added route: unreachable default table olsr-default metric 65535 (IPv$p)"
  99                                         else
 100                                                 logger -s -t policyrouting "Error! Could not add route: unreachable default table olsr-default metric 65535 (IPv$p)"
 101                                         fi
 102                                 }
 103                         done
 104
 105                 fi
 106                 if [ "$fallback" = 1 ]; then
 107                         for p in $proto; do
 108                                 [ ! "$(ip -$p ru s |grep "from all lookup olsr-default")" ] && {
 109                                         ip -$p rule add lookup olsr-default prio 33000
 110                                         if [ "$?" = "0" ]; then
 111                                                 logger -s -t policyrouting "Added rule: olsr-default prio 33000 (IPv$p)"
 112                                         else
 113                                                 logger -s -t policyrouting "Error! Could not add rule: olsr-default prio 33000 (IPv$p)"
 114                                         fi
 115                                 }
 116                         done
 117                 fi
 118         fi
 119 }
 120
 121 stop() {
 122         logger -s -t policyrouting "Stopping policy routing"
 123         olsrd_rmtables
 124         for p in $proto; do
 125                 ip -$p route flush table olsr-default
 126                 ip -$p rule del lookup olsr-default > /dev/null 2>&1
 127                 ip -$p rule del lookup olsr     > /dev/null 2>&1
 128         done
 129         restart_services
 130         echo "Hint: To completely disable freifunk-policyrouting set enable=0 in /etc/config/freifunk-policyrouting."
 131 }
 132
 133 restart() {
 134         logger -s -t policyrouting "Restarting policy routing"
 135         olsrd_rmtables
 136         for p in $proto; do
 137                 ip -$p route flush table olsr-default
 138                 ip -$p rule del lookup olsr-default > /dev/null 2>&1
 139                 ip -$p rule del lookup olsr     > /dev/null 2>&1
 140         done
 141         start
 142         restart_services
 143 }