| 1 | #!/bin/sh |
| 2 | # 6in4.sh - IPv6-in-IPv4 tunnel backend |
| 3 | # Copyright (c) 2010-2012 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_6in4_setup() { |
| 13 | local cfg="$1" |
| 14 | local iface="$2" |
| 15 | local link="6in4-$cfg" |
| 16 | |
| 17 | local mtu ttl ipaddr peeraddr ip6addr tunnelid username password |
| 18 | json_get_vars mtu ttl ipaddr peeraddr ip6addr tunnelid username password |
| 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" 0.0.0.0 ) |
| 27 | |
| 28 | [ -z "$ipaddr" ] && { |
| 29 | local wanif |
| 30 | if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then |
| 31 | proto_notify_error "$cfg" "NO_WAN_LINK" |
| 32 | return |
| 33 | fi |
| 34 | } |
| 35 | |
| 36 | proto_init_update "$link" 1 |
| 37 | proto_add_ipv6_route "::" 0 |
| 38 | |
| 39 | [ -n "$ip6addr" ] && { |
| 40 | local local6="${ip6addr%%/*}" |
| 41 | local mask6="${ip6addr##*/}" |
| 42 | [[ "$local6" = "$mask6" ]] && mask6= |
| 43 | proto_add_ipv6_address "$local6" "$mask6" |
| 44 | } |
| 45 | |
| 46 | proto_add_tunnel |
| 47 | json_add_string mode sit |
| 48 | json_add_int mtu "${mtu:-1280}" |
| 49 | json_add_int ttl "${ttl:-64}" |
| 50 | json_add_string local "$ipaddr" |
| 51 | json_add_string remote "$peeraddr" |
| 52 | proto_close_tunnel |
| 53 | |
| 54 | proto_send_update "$cfg" |
| 55 | |
| 56 | [ -n "$tunnelid" -a -n "$username" -a -n "$password" ] && { |
| 57 | [ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || { |
| 58 | password="$(echo -n "$password" | md5sum)"; password="${password%% *}" |
| 59 | } |
| 60 | |
| 61 | local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&apikey=$username&pass=$password&tid=$tunnelid" |
| 62 | local try=0 |
| 63 | local max=3 |
| 64 | |
| 65 | while [ $((++try)) -le $max ]; do |
| 66 | wget -qO/dev/null "$url" 2>/dev/null && break |
| 67 | sleep 1 |
| 68 | done |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | proto_6in4_teardown() { |
| 73 | local cfg="$1" |
| 74 | } |
| 75 | |
| 76 | proto_6in4_init_config() { |
| 77 | no_device=1 |
| 78 | available=1 |
| 79 | |
| 80 | proto_config_add_string "ipaddr" |
| 81 | proto_config_add_string "ip6addr" |
| 82 | proto_config_add_string "peeraddr" |
| 83 | proto_config_add_string "tunnelid" |
| 84 | proto_config_add_string "username" |
| 85 | proto_config_add_string "password" |
| 86 | proto_config_add_int "mtu" |
| 87 | proto_config_add_int "ttl" |
| 88 | } |
| 89 | |
| 90 | [ -n "$INCLUDE_ONLY" ] || { |
| 91 | add_protocol 6in4 |
| 92 | } |
| 93 | |
