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 "110" $tables`" ]; then
  37                 echo "110 localnets" >> $tables
  38         fi
  39         if [ -z "`grep "111" $tables`" ]; then
  40                 echo "111 olsr" >> $tables
  41         fi
  42         if [ -z "`grep "112" $tables`" ]; then
  43                 echo "112 olsr-default" >> $tables
  44         fi
  45
  46 }
  47
  48 disable_dyngw() {
  49         dyngwlib=`uci show olsrd |grep dyn_gw.so |awk {' FS="."; print $1"."$2 '}`
  50         if [ -n "$dyngwlib" ]; then
  51                 uci set $dyngwlib.ignore=1
  52                 uci commit olsrd
  53         fi
  54
  55         dyngwplainlib=`uci show olsrd |grep dyn_gw_plain |awk {' FS="."; print $1"."$2 '}`
  56         if [ -n "$dyngwplainlib" ]; then
  57                 uci set $dyngwplainlib.ignore=1
  58                 uci commit olsrd
  59         fi
  60 }
  61
  62 restart_services() {
  63         wifi
  64         /etc/init.d/network restart
  65         /etc/init.d/olsrd restart
  66 }
  67
  68 boot() {
  69         if [ "$enable" = "1" ]; then
  70                 [ -d /var/state ] || mkdir -p /var/state
  71                 touch /var/state/freifunk-policyrouting
  72                 start
  73         else
  74                 olsrd_rmtables
  75         fi
  76 }
  77 start() {
  78         if [ $enable = "1" ]; then
  79                 logger -s -t policyrouting "Starting policy routing."
  80                 rt_tables
  81                 olsrd_intalltables
  82                 disable_dyngw
  83
  84                 for p in $proto; do
  85                         if [ ! "$(ip -$p ru s | grep "1000:     from all lookup olsr")" ]; then
  86                                 ip -$p rule add lookup olsr prio 1000
  87                                 # add table for routes to local networks
  88                                 ip -$p rule add lookup localnets prio 2000
  89
  90                                 if [ "$?" = "0" ]; then
  91                                         logger -s -t policyrouting "Added rule: lookup olsr prio 1000 (IPv$p)"
  92                                 else
  93                                         logger -s -t policyrouting "Error! Could not add rule: lookup olsr prio 1000 (IPv$p)"
  94                                 fi
  95                         fi
  96                 done
  97
  98                 # add unreachable with high metric so packets stop here if they find no gateway
  99                 # in table olsr-default
 100                 if [ "$strict" != 0 ]; then
 101                         for p in $proto; do
 102                                 [ ! "$(ip -$p r s t olsr-default |grep "unreachable default")" ] && {
 103                                         ip -$p route add unreachable default table olsr-default metric 65535
 104                                         if [ "$?" = "0" ]; then
 105                                                 logger -s -t policyrouting "Added route: unreachable default table olsr-default metric 65535 (IPv$p)"
 106                                         else
 107                                                 logger -s -t policyrouting "Error! Could not add route: unreachable default table olsr-default metric 65535 (IPv$p)"
 108                                         fi
 109                                 }
 110                         done
 111
 112                 fi
 113                 if [ "$fallback" = 1 ]; then
 114                         for p in $proto; do
 115                                 [ ! "$(ip -$p ru s |grep "from all lookup olsr-default")" ] && {
 116                                         ip -$p rule add lookup olsr-default prio 33000
 117                                         if [ "$?" = "0" ]; then
 118                                                 logger -s -t policyrouting "Added rule: olsr-default prio 33000 (IPv$p)"
 119                                         else
 120                                                 logger -s -t policyrouting "Error! Could not add rule: olsr-default prio 33000 (IPv$p)"
 121                                         fi
 122                                 }
 123                         done
 124                 fi
 125         fi
 126 }
 127
 128 stop() {
 129         logger -s -t policyrouting "Stopping policy routing"
 130         olsrd_rmtables
 131         for p in $proto; do
 132                 ip -$p route flush table olsr-default
 133                 ip -$p rule del lookup olsr-default > /dev/null 2>&1
 134                 ip -$p rule del lookup olsr     > /dev/null 2>&1
 135         done
 136         restart_services
 137         echo "Hint: To completely disable freifunk-policyrouting set enable=0 in /etc/config/freifunk-policyrouting."
 138 }
 139
 140 restart() {
 141         logger -s -t policyrouting "Restarting policy routing"
 142         olsrd_rmtables
 143         for p in $proto; do
 144                 ip -$p route flush table olsr-default
 145                 ip -$p rule del lookup olsr-default > /dev/null 2>&1
 146                 ip -$p rule del lookup olsr     > /dev/null 2>&1
 147         done
 148         start
 149         restart_services
 150 }