X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Fcifs%2Fasn1.c;h=cb52cbbe45ff4704790ec4ffbf0a985e3423f492;hb=4b18f2a9c3964f7612b7403dddc1d1ba5443ae24;hp=f50a88d58f782ee18d06a15650ade6eac3661e6c;hpb=b43035a5ec4deecd43019728ab9347df82dd121f;p=linux-2.6-omap-h63xx.git

diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c
index f50a88d58f7..cb52cbbe45f 100644
--- a/fs/cifs/asn1.c
+++ b/fs/cifs/asn1.c
@@ -77,8 +77,12 @@
 
 #define SPNEGO_OID_LEN 7
 #define NTLMSSP_OID_LEN  10
+#define KRB5_OID_LEN  7
+#define MSKRB5_OID_LEN  7
 static unsigned long SPNEGO_OID[7] = { 1, 3, 6, 1, 5, 5, 2 };
 static unsigned long NTLMSSP_OID[10] = { 1, 3, 6, 1, 4, 1, 311, 2, 2, 10 };
+static unsigned long KRB5_OID[7] = { 1, 2, 840, 113554, 1, 2, 2 };
+static unsigned long MSKRB5_OID[7] = { 1, 2, 840, 48018, 1, 2, 2 };
 
 /*
  * ASN.1 context.
@@ -385,10 +389,9 @@ asn1_oid_decode(struct asn1_ctx *ctx,
 	unsigned long *optr;
 
 	size = eoc - ctx->pointer + 1;
-	*oid = kmalloc(size * sizeof (unsigned long), GFP_ATOMIC);
-	if (*oid == NULL) {
+	*oid = kmalloc(size * sizeof(unsigned long), GFP_ATOMIC);
+	if (*oid == NULL)
 		return 0;
-	}
 
 	optr = *oid;
 
@@ -457,7 +460,8 @@ decode_negTokenInit(unsigned char *security_blob, int length,
 	unsigned char *sequence_end;
 	unsigned long *oid = NULL;
 	unsigned int cls, con, tag, oidlen, rc;
-	int use_ntlmssp = FALSE;
+	bool use_ntlmssp = false;
+	bool use_kerberos = false;
 
 	*secType = NTLM; /* BB eventually make Kerberos or NLTMSSP the default*/
 
@@ -546,18 +550,28 @@ decode_negTokenInit(unsigned char *security_blob, int length,
 				return 0;
 			}
 			if ((tag == ASN1_OJI) && (con == ASN1_PRI)) {
-				rc = asn1_oid_decode(&ctx, end, &oid, &oidlen);
-				if (rc) {
+				if (asn1_oid_decode(&ctx, end, &oid, &oidlen)) {
+
 					cFYI(1,
 					  ("OID len = %d oid = 0x%lx 0x%lx "
 					   "0x%lx 0x%lx",
 					   oidlen, *oid, *(oid + 1),
 					   *(oid + 2), *(oid + 3)));
-					rc = compare_oid(oid, oidlen,
-						 NTLMSSP_OID, NTLMSSP_OID_LEN);
+
+					if (compare_oid(oid, oidlen,
+							MSKRB5_OID,
+							MSKRB5_OID_LEN))
+						use_kerberos = true;
+					else if (compare_oid(oid, oidlen,
+							     KRB5_OID,
+							     KRB5_OID_LEN))
+						use_kerberos = true;
+					else if (compare_oid(oid, oidlen,
+							     NTLMSSP_OID,
+							     NTLMSSP_OID_LEN))
+						use_ntlmssp = true;
+
 					kfree(oid);
-					if (rc)
-						use_ntlmssp = TRUE;
 				}
 			} else {
 				cFYI(1, ("Should be an oid what is going on?"));
@@ -581,9 +595,8 @@ decode_negTokenInit(unsigned char *security_blob, int length,
 			return 0;
 		} else if ((cls != ASN1_UNI) || (con != ASN1_CON)
 			   || (tag != ASN1_SEQ)) {
-			cFYI(1,
-			     ("Exit 6 cls = %d con = %d tag = %d end = %p (%d)",
-			      cls, con, tag, end, *end));
+			cFYI(1, ("cls = %d con = %d tag = %d end = %p (%d)",
+				cls, con, tag, end, *end));
 		}
 
 		if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) {
@@ -611,12 +624,10 @@ decode_negTokenInit(unsigned char *security_blob, int length,
 			 ctx.pointer));	/* is this UTF-8 or ASCII? */
 	}
 
-	/* if (use_kerberos)
-	   *secType = Kerberos
-	   else */
-	if (use_ntlmssp) {
+	if (use_kerberos)
+		*secType = Kerberos;
+	else if (use_ntlmssp)
 		*secType = NTLMSSP;
-	}
 
 	return 1;
 }