[package] resolveip: fix whitespace

[openwrt.git] / package / 6in4 / files / 6in4.hotplug

diff --git a/package/6in4/files/6in4.hotplug b/package/6in4/files/6in4.hotplug
index 534682e..9df9934 100644 (file)
--- a/package/6in4/files/6in4.hotplug
+++ b/package/6in4/files/6in4.hotplug
@@ -17,11 +17,14 @@ if [ "$ACTION" = ifup ]; then
                config_get wandev "$cfg" wan_device "$(find_6in4_wanif)"
                [ "$wandev" = "$DEVICE" ] || return 0
 
-               local oldip
                local wanip=$(find_6in4_wanip "$wandev")
-               config_get oldip "$cfg" ipaddr
 
-               [ -n "$wanip" ] && [ "$oldip" != "$wanip" ] && {
+               [ -n "$wanip" ] && {
+                       lsmod | grep -q ^sit || {
+                               logger -t 6in4-update "Tunneling driver not loaded yet, deferring action"
+                               exit 0
+                       }
+
                        local tunnelid
                        config_get tunnelid "$cfg" tunnelid
 
@@ -31,13 +34,32 @@ if [ "$ACTION" = ifup ]; then
                        local password
                        config_get password "$cfg" password
 
+                       uci_set_state network "$cfg" ipaddr "$wanip"
+
                        [ -n "$tunnelid" ] && [ -n "$username" ] && [ -n "$password" ] && {
                                [ "${#password}" == 32 -a -z "${password//[a-f0-9]/}" ] || {
                                        password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
                                }
-                               uci_set_state network "$cfg" ipaddr "$wanip"
 
-                               ( wget -qO/dev/null "http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&user_id=$username&pass=$password&tunnel_id=$tunnelid" && ifup "$cfg" )&
+                               (
+                                       local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&user_id=$username&pass=$password&tunnel_id=$tunnelid"
+                                       local try=0
+                                       local max=3
+
+                                       while [ $((++try)) -le $max ]; do
+                                               wget -qO/dev/null "$url" 2>/dev/null && {
+                                                       logger -t 6in4-update "Updated tunnel #$tunnelid endpoint to $wanip"
+                                                       ifup "$cfg"
+                                                       break
+                                               } || {
+                                                       logger -t 6in4-update "Try $try/$max failed, retrying"
+                                                       sleep 1
+                                               }
+                                       done
+                               )&
+                       } || {
+                               logger -t 6in4-update "Re-establishing tunnel due to change on $INTERFACE ($DEVICE)"
+                               ifup "$cfg" &
                        }
                }
        }