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