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From ansell <...@git.apache.org>
Subject [GitHub] httpclient pull request #61: HTTPCLIENT-1767: Null pointer dereference in Eo...
Date Tue, 13 Sep 2016 01:14:33 GMT
GitHub user ansell opened a pull request:


    HTTPCLIENT-1767: Null pointer dereference in EofSensorInputStream and ResponseEntityProxy

    This fixes HTTPCLIENT-1767 by adding null checks to ResponseEntityProxy and dereferencing
instance variables before null checks in EofSensorInputStream.
    For reference here, the stacktrace, against httpclient-4.5.2, which I can't reproduce
reliably, but which should be fixed by these changes is:
    java.lang.NullPointerException: null
    	at org.apache.http.impl.execchain.ResponseEntityProxy.streamClosed(ResponseEntityProxy.java:140)
    	at org.apache.http.conn.EofSensorInputStream.checkClose(EofSensorInputStream.java:228)
    	at org.apache.http.conn.EofSensorInputStream.close(EofSensorInputStream.java:174)

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/ansell/httpclient HTTPCLIENT-1767

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #61
commit 56b37dfdab78d651f95f7825b1c0f7daa166e8c5
Author: Peter Ansell <p_ansell@yahoo.com>
Date:   2016-09-13T01:05:21Z

    HTTPCLIENT-1767: Fix null pointer dereference after guard
    EofSensorInputStream is generating NullPointerExceptions in some rare situations. This
commit fixes that behaviour for the check methods by dereferencing the instance variable to
a final local variable to ensure that if it is not null at the null guard, that it will be
not null after that point also to successfully close/abort the stream
    Signed-off-by: Peter Ansell <p_ansell@yahoo.com>

commit b4a82de6a65fabc1cbbb57988fce046dd87b7e1e
Author: Peter Ansell <p_ansell@yahoo.com>
Date:   2016-09-13T01:09:37Z

    HTTPCLIENT-1767: Check parameters for null in ResponseEntityProxy
    In some rare cases, null parameters are sent to ReponseEntityProxy methods, this adds
checks on those to ensure that the connections are still released, but the null variable is
not dereferenced.
    Signed-off-by: Peter Ansell <p_ansell@yahoo.com>


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