Patch: DIGEST-MD5 and Charset "utf8"

[Andreas Winkelmann <ml@xxxxxxxxxxxxxx>]

Hello.

Saw a warning in another List.

"warning: SASL authentication failure: Charset must be UTF-8"

This message comes from the DIGEST-MD5 PLugin while connecting to an 
smtp-Server.

...
S: 250-AUTH=LOGIN
S: 250-AUTH CRAM-MD5 DIGEST-MD5 LOGIN PLAIN NTLM
S: 250-STARTTLS
S: 250 SIZE
C: AUTH DIGEST-MD5
S: 334 
cmVhbG09InNtdHAuZW1haWwudm9kYWZvbmUuZGUiLG5vbmNlPSI3NmQ5NDQ4OWFjMzkxMThlZWNmYjMzMzdjNjY4MzQ0NiIsYWxnb3JpdGhtPW1kNS1zZXNzLGNoYXJzZXQ9dXRmOCxxb3A9YXV0aA==

Decoded:

realm="smtp.email.vodafone.de",nonce="a8d13b2523e5aeecf7ce58475c64885d",algorithm=md5-sess,charset=utf8,qop=auth

The Server announces it's Charset as "utf8" not "utf-8", Cyrus-SASL does not 
like this and throws the warning. Maybe it's safe to check both.

-- 
	Andreas

diff -Naur cyrus-sasl-2.1.22-vanilla/plugins/digestmd5.c cyrus-sasl-2.1.22/plugins/digestmd5.c
--- cyrus-sasl-2.1.22-vanilla/plugins/digestmd5.c	2006-05-17 18:46:17.000000000 +0200
+++ cyrus-sasl-2.1.22/plugins/digestmd5.c	2006-05-24 22:15:24.628767968 +0200
@@ -3380,7 +3380,7 @@
 		goto FreeAllocatedMem;
 	    }
 	} else if (strcasecmp(name, "charset") == 0) {
-	    if (strcasecmp(value, "utf-8") != 0) {
+	    if ((strcasecmp(value, "utf-8") != 0) && (strcasecmp(value, "utf8") != 0)) {
 		result = SASL_BADAUTH;
 		params->utils->seterror(params->utils->conn, 0,
 					"Charset must be UTF-8");