package/network/ipv6/ds-lite/files/dslite.sh

   1 #!/bin/sh
   2 # dslite.sh - IPv4-in-IPv6 tunnel backend
   3 # Copyright (c) 2013 OpenWrt.org
   4
   5 [ -n "$INCLUDE_ONLY" ] || {
   6         . /lib/functions.sh
   7         . /lib/functions/network.sh
   8         . ../netifd-proto.sh
   9         init_proto "$@"
  10 }
  11
  12 proto_dslite_setup() {
  13         local cfg="$1"
  14         local iface="$2"
  15         local link="ds-$cfg"
  16         local remoteip6
  17
  18         local mtu ttl peeraddr ip6addr tunlink zone weakif
  19         json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif
  20
  21         [ -z "$peeraddr" ] && {
  22                 proto_notify_error "$cfg" "MISSING_ADDRESS"
  23                 proto_block_restart "$cfg"
  24                 return
  25         }
  26
  27         ( proto_add_host_dependency "$cfg" "::" "$tunlink" )
  28
  29         remoteip6=$(resolveip -6 $peeraddr)
  30         if [ -z "$remoteip6" ]; then
  31                 sleep 3
  32                 remoteip6=$(resolveip -6 $peeraddr)
  33                 if [ -z "$remoteip6" ]; then
  34                         proto_notify_error "$cfg" "AFTR_DNS_FAIL"
  35                         return
  36                 fi
  37         fi
  38         peeraddr="${remoteip6%% *}"
  39
  40         [ -z "$ip6addr" ] && {
  41                 local wanif="$tunlink"
  42                 if [ -z "$wanif" ] && ! network_find_wan6 wanif; then
  43                         proto_notify_error "$cfg" "NO_WAN_LINK"
  44                         return
  45                 fi
  46
  47                 if ! network_get_ipaddr6 ip6addr "$wanif"; then
  48                         [ -z "$weakif" ] && weakif="lan"
  49                         if ! network_get_ipaddr6 ip6addr "$weakif"; then
  50                                 proto_notify_error "$cfg" "NO_WAN_LINK"
  51                                 return
  52                         fi
  53                 fi
  54         }
  55
  56         proto_init_update "$link" 1
  57         proto_add_ipv4_route "0.0.0.0" 0
  58         proto_add_ipv4_address "192.0.0.2" "" "" "192.0.0.1"
  59
  60         proto_add_tunnel
  61         json_add_string mode ipip6
  62         json_add_int mtu "${mtu:-1280}"
  63         json_add_int ttl "${ttl:-64}"
  64         json_add_string local "$ip6addr"
  65         json_add_string remote "$peeraddr"
  66         [ -n "$tunlink" ] && json_add_string link "$tunlink"
  67         proto_close_tunnel
  68
  69         proto_add_data
  70         [ -n "$zone" ] && json_add_string zone "$zone"
  71
  72         json_add_array firewall
  73           json_add_object ""
  74             json_add_string type nat
  75             json_add_string target ACCEPT
  76           json_close_object
  77         json_close_array
  78         proto_close_data
  79
  80         proto_send_update "$cfg"
  81 }
  82
  83 proto_dslite_teardown() {
  84         local cfg="$1"
  85 }
  86
  87 proto_dslite_init_config() {
  88         no_device=1
  89         available=1
  90
  91         proto_config_add_string "ip6addr"
  92         proto_config_add_string "peeraddr"
  93         proto_config_add_string "tunlink"
  94         proto_config_add_int "mtu"
  95         proto_config_add_int "ttl"
  96         proto_config_add_string "zone"
  97         proto_config_add_string "weakif"
  98 }
  99
 100 [ -n "$INCLUDE_ONLY" ] || {
 101         add_protocol dslite
 102 }