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140 lines
3.2 KiB
Bash
Executable File
140 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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# 6in4.sh - IPv6-in-IPv4 tunnel backend
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# Copyright (c) 2010-2015 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_update() {
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sh -c '
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timeout=5
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(while [ $((timeout--)) -gt 0 ]; do
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sleep 1
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kill -0 $$ || exit 0
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done; kill -9 $$) 2>/dev/null &
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exec "$@"
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' "$1" "$@"
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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 tos ipaddr peeraddr ip6addr ip6prefix tunlink tunnelid username password updatekey
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json_get_vars mtu ttl tos ipaddr peeraddr ip6addr ip6prefix tunlink tunnelid username password updatekey
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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" "$peeraddr" "$tunlink" )
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[ -z "$ipaddr" ] && {
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local wanif="$tunlink"
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if [ -z "$wanif" ] && ! network_find_wan wanif; then
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proto_notify_error "$cfg" "NO_WAN_LINK"
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return
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fi
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if ! 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 "$link" 1
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[ -n "$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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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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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 "${ttl:-64}"
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[ -n "$tos" ] && json_add_string tos "$tos"
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json_add_string local "$ipaddr"
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json_add_string remote "$peeraddr"
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[ -n "$tunlink" ] && json_add_string link "$tunlink"
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proto_close_tunnel
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proto_send_update "$cfg"
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[ -n "$tunnelid" -a -n "$username" -a \( -n "$password" -o -n "$updatekey" \) ] && {
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[ -n "$updatekey" ] && password="$updatekey"
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local http="http"
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local urlget="uclient-fetch"
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local urlget_opts="-qO-"
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local ca_path="${SSL_CERT_DIR:-/etc/ssl/certs}"
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[ -f /lib/libustream-ssl.so ] && http=https
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[ "$http" = "https" -a -z "$(find $ca_path -name "*.0" 2>/dev/null)" ] && {
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urlget_opts="$urlget_opts --no-check-certificate"
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}
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local url="$http://ipv4.tunnelbroker.net/nic/update?hostname=$tunnelid"
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local try=0
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local max=3
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(
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set -o pipefail
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while [ $((++try)) -le $max ]; do
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if proto_6in4_update $urlget $urlget_opts --user="$username" --password="$password" "$url" 2>&1 | \
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sed -e 's,^Killed$,timeout,' -e "s,^,update $try/$max: ," | \
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logger -t "$link";
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then
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logger -t "$link" "updated"
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return 0
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fi
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sleep 5
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done
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logger -t "$link" "update failed"
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)
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}
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}
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proto_6in4_teardown() {
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local cfg="$1"
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}
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proto_6in4_init_config() {
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no_device=1
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available=1
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proto_config_add_string "ipaddr"
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proto_config_add_string "ip6addr"
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proto_config_add_string "ip6prefix"
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proto_config_add_string "peeraddr"
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proto_config_add_string "tunlink"
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proto_config_add_string "tunnelid"
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proto_config_add_string "username"
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proto_config_add_string "password"
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proto_config_add_string "updatekey"
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proto_config_add_int "mtu"
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proto_config_add_int "ttl"
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proto_config_add_string "tos"
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}
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[ -n "$INCLUDE_ONLY" ] || {
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add_protocol 6in4
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}
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