From: Florian Fainelli <florian@openwrt.org>
Date: Sat, 4 Sep 2010 16:03:14 +0000 (+0000)
Subject: support pre-md5summed passwords in 6in4 scripts
X-Git-Tag: reboot~18993
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=f7538b68649edff265c4fbc1dfa9de97003ad08b

support pre-md5summed passwords in 6in4 scripts

The he.net ipv6 tunnels require that a user supply the md5sum of his password
when updating the ipv4 tunnel endpoint. the 6in4 package supports this well,
but requires that a user store his password in plaintext in uci. this patch
tries to detect whether the password in uci is already an md5sum
(32 characters containing only [a-z0-9]), so users can avoid storing plaintext
passwords.

Signed-off-by: Steven Brudenell <steven.brudenell@gmail.com>

SVN-Revision: 22889
---

diff --git a/package/6in4/files/6in4.hotplug b/package/6in4/files/6in4.hotplug
index 96b046d14d..b695b527ed 100644
--- a/package/6in4/files/6in4.hotplug
+++ b/package/6in4/files/6in4.hotplug
@@ -32,7 +32,9 @@ if [ "$ACTION" = ifup ]; then
 			config_get password "$cfg" password
 
 			[ -n "$tunnelid" ] && [ -n "$username" ] && [ -n "$password" ] && {
-				password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
+				[ "${#password}" != 32 ] || [ -n "$(echo "$password" | sed 's/[a-z0-9]//g')" ] && {
+					password="$(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" )&