cjdns/files/cjdns.defaults

   1 #!/bin/sh
   2
   3 # if there is an existing config, our work is already done
   4 uci get cjdns.cjdns.ipv6 >/dev/null 2>&1
   5 if [ $? -ne 0 ]; then
   6
   7   # register commit handler
   8   uci -q batch <<-EOF >/dev/null
   9     delete ucitrack.@cjdns[-1]
  10     add ucitrack cjdns
  11     set ucitrack.@cjdns[-1].init=cjdns
  12     commit ucitrack
  13 EOF
  14
  15   # generate configuration
  16   touch /etc/config/cjdns
  17   cjdroute --genconf | cjdroute --cleanconf | cjdrouteconf set
  18
  19   # make sure config is present (might fail for any reason)
  20   uci get cjdns.cjdns.ipv6 >/dev/null 2>&1
  21   if [ $? -ne 0 ]; then
  22     exit 1
  23   fi
  24
  25   # enable auto-peering on ethernet interface lan, if existing
  26   uci get network.lan | grep interface >/dev/null 2>&1
  27   if [ $? -eq 0 ]; then
  28     uci get network.lan.type | grep bridge >/dev/null 2>&1
  29     if [ $? -eq 0 ]; then
  30       # most routers will set up an ethernet bridge for the lan
  31       ifname="br-lan"
  32     else
  33       # docker containers don't have permission to create bridges by default,
  34       # so we bind to the underlying interface instead (likely eth0)
  35       ifname=`uci get network.lan.ifname`
  36     fi
  37     uci -q batch <<-EOF >/dev/null
  38       add cjdns eth_interface
  39       set cjdns.@eth_interface[-1].beacon=2
  40       set cjdns.@eth_interface[-1].bind=$ifname
  41 EOF
  42   fi
  43   # set the tun interface name
  44   uci set cjdns.cjdns.tun_device=tuncjdns
  45
  46   # create the network interface
  47   uci -q batch <<-EOF >/dev/null
  48     set network.cjdns=interface
  49     set network.cjdns.ifname=tuncjdns
  50     set network.cjdns.proto=none
  51 EOF
  52
  53   # firewall rules by @dangowrt -- thanks <3
  54
  55   # create the firewall zone
  56   uci -q batch <<-EOF >/dev/null
  57     add firewall zone
  58     set firewall.@zone[-1].name=cjdns
  59     add_list firewall.@zone[-1].network=cjdns
  60     set firewall.@zone[-1].input=REJECT
  61     set firewall.@zone[-1].output=ACCEPT
  62     set firewall.@zone[-1].forward=REJECT
  63     set firewall.@zone[-1].conntrack=1
  64     set firewall.@zone[-1].family=ipv6
  65 EOF
  66
  67   # allow ICMP from cjdns zone, e.g. ping6
  68   uci -q batch <<-EOF >/dev/null
  69     add firewall rule
  70     set firewall.@rule[-1].name='Allow-ICMPv6-cjdns'
  71     set firewall.@rule[-1].src=cjdns
  72     set firewall.@rule[-1].proto=icmp
  73     add_list firewall.@rule[-1].icmp_type=echo-request
  74     add_list firewall.@rule[-1].icmp_type=echo-reply
  75     add_list firewall.@rule[-1].icmp_type=destination-unreachable
  76     add_list firewall.@rule[-1].icmp_type=packet-too-big
  77     add_list firewall.@rule[-1].icmp_type=time-exceeded
  78     add_list firewall.@rule[-1].icmp_type=bad-header
  79     add_list firewall.@rule[-1].icmp_type=unknown-header-type
  80     set firewall.@rule[-1].limit='1000/sec'
  81     set firewall.@rule[-1].family=ipv6
  82     set firewall.@rule[-1].target=ACCEPT
  83 EOF
  84
  85   # allow SSH from cjdns zone, needs to be explicitly enabled
  86   uci -q batch <<-EOF >/dev/null
  87     add firewall rule
  88     set firewall.@rule[-1].enabled=0
  89     set firewall.@rule[-1].name='Allow-SSH-cjdns'
  90     set firewall.@rule[-1].src=cjdns
  91     set firewall.@rule[-1].proto=tcp
  92     set firewall.@rule[-1].dest_port=22
  93     set firewall.@rule[-1].target=ACCEPT
  94 EOF
  95
  96   # allow LuCI access from cjdns zone, needs to be explicitly enabled
  97   uci -q batch <<-EOF >/dev/null
  98     add firewall rule
  99     set firewall.@rule[-1].enabled=0
 100     set firewall.@rule[-1].name='Allow-HTTP-cjdns'
 101     set firewall.@rule[-1].src=cjdns
 102     set firewall.@rule[-1].proto=tcp
 103     set firewall.@rule[-1].dest_port=80
 104     set firewall.@rule[-1].target=ACCEPT
 105 EOF
 106
 107   # allow UDP peering from wan zone, if it exists
 108   uci show network.wan >/dev/null 2>&1
 109   if [ $? -eq 0 ]; then
 110     peeringPort=`uci get cjdns.@udp_interface[0].port`
 111     uci -q batch <<-EOF >/dev/null
 112       add firewall rule
 113       set firewall.@rule[-1].name='Allow-cjdns-wan'
 114       set firewall.@rule[-1].src=wan
 115       set firewall.@rule[-1].proto=udp
 116       set firewall.@rule[-1].dest_port=$peeringPort
 117       set firewall.@rule[-1].target=ACCEPT
 118 EOF
 119   fi
 120
 121   uci commit cjdns
 122   uci commit firewall
 123   uci commit network
 124
 125 fi
 126
 127 exit 0