[jira] Work started: (MODPYTHON-160) req.add_handler/req.handler and PythonInterpPerDirective

["Graham Dumpleton (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/MODPYTHON-160?page=all ]
     
Work on MODPYTHON-160 started by Graham Dumpleton

> req.add_handler/req.handler and PythonInterpPerDirective
> --------------------------------------------------------
>
>          Key: MODPYTHON-160
>          URL: http://issues.apache.org/jira/browse/MODPYTHON-160
>      Project: mod_python
>         Type: Bug

>   Components: core
>     Versions: 3.3
>     Reporter: Graham Dumpleton
>     Assignee: Graham Dumpleton

>
> MODPYTHON-125 made req.handler writable. Being able to now do this has uncovered a bug whereby if PythonInterpPerDirective is used mod_python can cause Apache to crash. Code to trigger the problem is:
> # .htaccess
> SetHandler mod_python
> PythonInterpPerDirective On
> PythonFixupHandler interpreter_1
> # interpreter_1.py
> from mod_python import apache
> def fixuphandler(req):
>     req.log_error("fixuphandler")
>     req.log_error("interpreter=%s"%req.interpreter)
>     req.log_error("directory=%s"%req.hlist.directory)
>     req.handler = "mod_python"
>     req.add_handler("PythonHandler","interpreter_1")
>     return apache.OK
> def handler(req):
>     req.log_error("handler")
>     req.log_error("interpreter=%s"%req.interpreter)
>     req.log_error("directory=%s"%req.hlist.directory)
>     req.content_type = 'text/plain'
>     req.write('hello')
>     return apache.OK
> In summary, if PythonHandler is not used in Apache configuration to enable mod_python but it is done by assignment to req.handler in fixup phase and then req.add_handler() is used to add a handler to be called for content phase, and PythonInterpPerDirective is being used, mod_python will cause Apache to crash.
> Location of crash not yet identified.

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