Icecast temp patch (OR: Patches? We DO need stinkin' patches!!@$!)

[Neeko Oni <neeko@haackey.com>]

This addresses the client_login() Icecast issue:

For those who have a burning need to 'patch < patch', or just don't
want to type three lines into client.c, I've attached a small
patch to client.c (Icecast 1.3.11).
Simplicity is thy name.
(More specific:  It's the suggested patch in the icx.c exploit, with
 an added logging flag.)

Thanks to Diz for making this public.

.Neeko Oni
--- client.c    Wed Aug  1 16:06:53 2001
+++ src/client.c      Wed Apr  3 12:36:23 2002
@@ -103,6 +103,11 @@
 
        xa_debug(3, "Client login...\n");
 
+       if (strlen(expr) > 8000) { 
+               write_log(LOG_DEFAULT, "WARNING: expr greater than 8000--possible BOF attack?");
+       return;
+}
+
        if (!con || !expr) {
                write_log(LOG_DEFAULT, "WARNING: client_login called with NULL pointer");
                return;