[package] 6in4: re-establish tunnel also if no credentials are used (static setup)
[openwrt/svn-archive/archive.git] / package / 6in4 / files / 6in4.hotplug
1 #!/bin/sh
2
3 if [ "$ACTION" = ifup ]; then
4 . /etc/functions.sh
5
6 include /lib/network
7 scan_interfaces
8
9 update_tunnel() {
10 local cfg="$1"
11
12 local proto
13 config_get proto "$cfg" proto
14 [ "$proto" = 6in4 ] || return 0
15
16 local wandev
17 config_get wandev "$cfg" wan_device "$(find_6in4_wanif)"
18 [ "$wandev" = "$DEVICE" ] || return 0
19
20 local wanip=$(find_6in4_wanip "$wandev")
21
22 [ -n "$wanip" ] && {
23 local tunnelid
24 config_get tunnelid "$cfg" tunnelid
25
26 local username
27 config_get username "$cfg" username
28
29 local password
30 config_get password "$cfg" password
31
32 uci_set_state network "$cfg" ipaddr "$wanip"
33
34 [ -n "$tunnelid" ] && [ -n "$username" ] && [ -n "$password" ] && {
35 [ "${#password}" == 32 -a -z "${password//[a-f0-9]/}" ] || {
36 password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
37 }
38
39 (
40 local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&user_id=$username&pass=$password&tunnel_id=$tunnelid"
41 local try=0
42 local max=3
43
44 while [ $((++try)) -le $max ]; do
45 wget -qO/dev/null "$url" 2>/dev/null && {
46 logger -t 6in4-update "Updated tunnel #$tunnelid endpoint to $wanip"
47 ifup "$cfg"
48 break
49 } || {
50 logger -t 6in4-update "Try $try/$max failed, retrying"
51 sleep 1
52 }
53 done
54 )&
55 } || {
56 logger -t 6in4-update "Re-establishing tunnel due to change on $INTERFACE ($DEVICE)"
57 ifup "$cfg" &
58 }
59 }
60 }
61
62 config_foreach update_tunnel interface
63 fi