Openwrt/package/network/ipv6/ds-lite/files/dslite.sh
Jonas Gorski 5caa23551e ds-lite: fix resolve retry for fqdn peeraddrs
If the first resolveip call will fail, peeraddr will be now empty, and
the subsequent resolveip call will try to resolve an empty string.

Fix this by storing the result in a temporary variable.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 45712
2015-05-22 10:24:30 +00:00

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#!/bin/sh
# dslite.sh - IPv4-in-IPv6 tunnel backend
# Copyright (c) 2013 OpenWrt.org
[ -n "$INCLUDE_ONLY" ] || {
. /lib/functions.sh
. /lib/functions/network.sh
. ../netifd-proto.sh
init_proto "$@"
}
proto_dslite_setup() {
local cfg="$1"
local iface="$2"
local link="ds-$cfg"
local remoteip6
local mtu ttl peeraddr ip6addr tunlink zone weakif
json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif
[ -z "$peeraddr" ] && {
proto_notify_error "$cfg" "MISSING_ADDRESS"
proto_block_restart "$cfg"
return
}
( proto_add_host_dependency "$cfg" "::" "$tunlink" )
remoteip6=$(resolveip -6 $peeraddr)
if [ -z "$remoteip6" ]; then
sleep 3
remoteip6=$(resolveip -6 $peeraddr)
if [ -z "$remoteip6" ]; then
proto_notify_error "$cfg" "AFTR_DNS_FAIL"
return
fi
fi
peeraddr="${remoteip6%% *}"
[ -z "$ip6addr" ] && {
local wanif="$tunlink"
if [ -z "$wanif" ] && ! network_find_wan6 wanif; then
proto_notify_error "$cfg" "NO_WAN_LINK"
return
fi
if ! network_get_ipaddr6 ip6addr "$wanif"; then
[ -z "$weakif" ] && weakif="lan"
if ! network_get_ipaddr6 ip6addr "$weakif"; then
proto_notify_error "$cfg" "NO_WAN_LINK"
return
fi
fi
}
proto_init_update "$link" 1
proto_add_ipv4_route "0.0.0.0" 0
proto_add_ipv4_address "192.0.0.2" "" "" "192.0.0.1"
proto_add_tunnel
json_add_string mode ipip6
json_add_int mtu "${mtu:-1280}"
json_add_int ttl "${ttl:-64}"
json_add_string local "$ip6addr"
json_add_string remote "$peeraddr"
[ -n "$tunlink" ] && json_add_string link "$tunlink"
proto_close_tunnel
proto_add_data
[ -n "$zone" ] && json_add_string zone "$zone"
json_add_array firewall
json_add_object ""
json_add_string type nat
json_add_string target ACCEPT
json_close_object
json_close_array
proto_close_data
proto_send_update "$cfg"
}
proto_dslite_teardown() {
local cfg="$1"
}
proto_dslite_init_config() {
no_device=1
available=1
proto_config_add_string "ip6addr"
proto_config_add_string "peeraddr"
proto_config_add_string "tunlink"
proto_config_add_int "mtu"
proto_config_add_int "ttl"
proto_config_add_string "zone"
proto_config_add_string "weakif"
}
[ -n "$INCLUDE_ONLY" ] || {
add_protocol dslite
}