[Bug 784282] New: rtspsrc crash when HTTP tunneling with digest authentication

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=784282

            Bug ID: 784282
           Summary: rtspsrc crash when HTTP tunneling with digest
                    authentication
    Classification: Platform
           Product: GStreamer
           Version: 1.12.1
                OS: Mac OS
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: joel.gstreamer at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Starting in commit 4c7fad2dba108e5d6413579a23041445ae7df469, locks were added
in rtspsrc. However, there is one case where you try to free the mutex when it
wasn't initialized. Here is how I reproduced it:

1. Use an RTSP stream with digest authentication and HTTP tunneling.
2. Connect to the stream
3. The stream will return 401 unauthorized at first because you must
re-authenticate with digest parameters.
4. At this point in gst_rtsp_conninfo_connect, rtspsrc will immediately call
gst_rtsp_conninfo_close.
5. gst_rtsp_conninfo_close will then attempt to free the mutex with these
lines:
g_mutex_clear (&info->send_lock);
g_mutex_clear (&info->recv_lock);
6. This will lead to a crash because the mutex was never initialized. The
mutex's are only initialized after the initial connection is created which this
path never gets to.

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