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109 lines
2.7 KiB
Bash
Executable File
109 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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# 6in4.sh - IPv6-in-IPv4 tunnel backend
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# Copyright (c) 2010-2012 OpenWrt.org
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[ -n "$INCLUDE_ONLY" ] || {
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. /lib/functions.sh
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. /lib/functions/network.sh
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. ../netifd-proto.sh
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init_proto "$@"
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}
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proto_6in4_setup() {
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local cfg="$1"
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local iface="$2"
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local link="6in4-$cfg"
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local mtu ttl ipaddr peeraddr ip6addr ip6prefix tunnelid username password updatekey sourcerouting
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json_get_vars mtu ttl ipaddr peeraddr ip6addr ip6prefix tunnelid username password updatekey sourcerouting
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[ -z "$peeraddr" ] && {
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proto_notify_error "$cfg" "MISSING_ADDRESS"
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proto_block_restart "$cfg"
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return
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}
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( proto_add_host_dependency "$cfg" 0.0.0.0 )
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[ -z "$ipaddr" ] && {
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local wanif
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if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then
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proto_notify_error "$cfg" "NO_WAN_LINK"
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return
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fi
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}
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proto_init_update "$link" 1
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local source=""
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[ "$sourcerouting" != "0" ] && source="::/128"
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proto_add_ipv6_route "::" 0 "" "" "" "$source"
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[ -n "$ip6addr" ] && {
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local local6="${ip6addr%%/*}"
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local mask6="${ip6addr##*/}"
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[[ "$local6" = "$mask6" ]] && mask6=
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proto_add_ipv6_address "$local6" "$mask6"
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[ "$sourcerouting" != "0" ] && proto_add_ipv6_route "::" 0 "" "" "" "$local6/$mask6"
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}
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[ -n "$ip6prefix" ] && {
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proto_add_ipv6_prefix "$ip6prefix"
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[ "$sourcerouting" != "0" ] && proto_add_ipv6_route "::" 0 "" "" "" "$ip6prefix"
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}
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proto_add_tunnel
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json_add_string mode sit
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json_add_int mtu "${mtu:-1280}"
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json_add_int ttl "${ttl:-64}"
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json_add_string local "$ipaddr"
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json_add_string remote "$peeraddr"
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proto_close_tunnel
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proto_send_update "$cfg"
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[ -n "$tunnelid" -a -n "$username" -a \( -n "$password" -o -n "$updatekey" \) ] && {
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[ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || {
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password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
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}
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[ -n "$updatekey" ] && password="$updatekey"
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local url="http://ipv4.tunnelbroker.net/nic/update?username=$username&password=$password&hostname=$tunnelid"
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local try=0
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local max=3
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while [ $((++try)) -le $max ]; do
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( exec wget -qO/dev/null "$url" 2>/dev/null ) &
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local pid=$!
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( sleep 5; kill $pid 2>/dev/null ) &
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wait $pid && break
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done
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}
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}
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proto_6in4_teardown() {
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local cfg="$1"
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}
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proto_6in4_init_config() {
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no_device=1
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available=1
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proto_config_add_string "ipaddr"
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proto_config_add_string "ip6addr"
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proto_config_add_string "ip6prefix"
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proto_config_add_string "peeraddr"
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proto_config_add_string "tunnelid"
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proto_config_add_string "username"
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proto_config_add_string "password"
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proto_config_add_string "updatekey"
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proto_config_add_int "mtu"
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proto_config_add_int "ttl"
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proto_config_add_boolean "sourcerouting"
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}
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[ -n "$INCLUDE_ONLY" ] || {
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add_protocol 6in4
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}
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