From 14c8bca1f415a6a6a6cd27cec775c2d1e52427aa Mon Sep 17 00:00:00 2001
From: boli <boli@localhost>
Date: Fri, 01 May 2009 01:14:55 +0000
Subject: [PATCH] Second fix for issue 3949: All ASN.1 parsing code now ignores trailing unrecognized SEQUENCE components.

---
 opendj-sdk/opends/src/server/org/opends/server/controls/EntryChangeNotificationControl.java |   41 +++++++++++++++++++----------------------
 1 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/opendj-sdk/opends/src/server/org/opends/server/controls/EntryChangeNotificationControl.java b/opendj-sdk/opends/src/server/org/opends/server/controls/EntryChangeNotificationControl.java
index ef01791..f9f4607 100644
--- a/opendj-sdk/opends/src/server/org/opends/server/controls/EntryChangeNotificationControl.java
+++ b/opendj-sdk/opends/src/server/org/opends/server/controls/EntryChangeNotificationControl.java
@@ -22,7 +22,7 @@
  * CDDL HEADER END
  *
  *
- *      Copyright 2006-2008 Sun Microsystems, Inc.
+ *      Copyright 2006-2009 Sun Microsystems, Inc.
  */
 package org.opends.server.controls;
 import org.opends.messages.Message;
@@ -33,6 +33,8 @@
 import org.opends.server.protocols.asn1.*;
 import static org.opends.server.protocols.asn1.ASN1Constants.
     UNIVERSAL_OCTET_STRING_TYPE;
+import static org.opends.server.protocols.asn1.ASN1Constants.
+    UNIVERSAL_INTEGER_TYPE;
 import org.opends.server.types.*;
 
 import static org.opends.server.loggers.debug.DebugLogger.*;
@@ -81,28 +83,23 @@
         int changeTypeValue = (int)reader.readInteger();
         changeType = PersistentSearchChangeType.valueOf(changeTypeValue);
 
-        while(reader.hasNextElement()) {
-          switch(reader.peekType()) {
-            case ASN1Constants.UNIVERSAL_OCTET_STRING_TYPE :
-              if (changeType != PersistentSearchChangeType.MODIFY_DN)
-              {
-                Message message =
-                    ERR_ECN_ILLEGAL_PREVIOUS_DN.get(String.valueOf(changeType));
-                throw new DirectoryException(
-                    ResultCode.PROTOCOL_ERROR, message);
-              }
-
-              previousDN = DN.decode(reader.readOctetStringAsString());
-              break;
-            case ASN1Constants.UNIVERSAL_INTEGER_TYPE :
-              changeNumber = reader.readInteger();
-              break;
-            default :
-              Message message =
-                  ERR_ECN_INVALID_ELEMENT_TYPE.get(
-                      byteToHex(reader.peekType()));
-              throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message);
+        if(reader.hasNextElement() &&
+            reader.peekType() == UNIVERSAL_OCTET_STRING_TYPE)
+        {
+          if (changeType != PersistentSearchChangeType.MODIFY_DN)
+          {
+            Message message =
+                ERR_ECN_ILLEGAL_PREVIOUS_DN.get(String.valueOf(changeType));
+            throw new DirectoryException(
+                ResultCode.PROTOCOL_ERROR, message);
           }
+
+          previousDN = DN.decode(reader.readOctetStringAsString());
+        }
+        if(reader.hasNextElement() &&
+            reader.peekType() == UNIVERSAL_INTEGER_TYPE)
+        {
+          changeNumber = reader.readInteger();
         }
       }
       catch (DirectoryException de)

--
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