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From "Marco Renz (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQCPP-149) Client crash when receiving message with empty string property from java
Date Fri, 19 Oct 2007 12:40:24 GMT
Client crash when receiving message with empty string property from java
------------------------------------------------------------------------

                 Key: AMQCPP-149
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-149
             Project: ActiveMQ C++ Client
          Issue Type: Bug
          Components: Openwire
    Affects Versions: 2.1, 2.0.1
            Reporter: Marco Renz
            Assignee: Nathan Mittler


Send message from a java client with a string property whereas the value is the empty string.
Try to receive this message with a C++ client.
Result: C++ client crashs.

Reason:

In OpenwireStringSupport::readString a std::vector is initialized to the string length which
is 0. Then DataInputStream::readFully is called with the vector as argument. But this method
tries to get the element at index 0 of the vector without any check. But there is no element
in the vector at all...

Proposed solution:

DataInputStream::readFully  should check the size of the vector before accessing elements.

Further info:

If the message is send from C++ client then there is no problem. Maybe /0 is used so that
the vector has at least a size of 1.
I got that probelm with 2.0.1. I did not tried 2.1 but checked the code.

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