~azzar1/unity/add-show-desktop-key

93 by mattgiuca
New directory hierarchy.
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# IVLE
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# Copyright (C) 2007-2008 The University of Melbourne
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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# Module: dispatch_handler
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# Author: Matt Giuca
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# Date: 11/12/2007
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# This is a mod_python handler program. The correct way to call it is to have
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# Apache send all requests to be handled by the module 'dispatch'.
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# This file is a wrapper around the dispatch module, necessary because
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# mod_python does not (for some reason) load the handler directory into
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# sys.path.
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# It requires that the server config has the following line:
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# PythonOption ivle.handlerpath "PATH-TO-IVLE"
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# Sets sys.path with the correct path, then calls the handler in the dispatch
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# module.
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import sys
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from mod_python import apache
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def handler(req):
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    # A nasty hack :(
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    # The Apache httpd.conf needs to specify ivle.handlerpath as an option
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    # (see README).
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    try:
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        handlerpath = req.get_options()['ivle.handlerpath']
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        if handlerpath not in sys.path:
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            sys.path.append(handlerpath)
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        import dispatch
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        import conf
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        conf.ivlepath = handlerpath
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        return dispatch.handler(req)
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    except KeyError:
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        # Note: "Internal Server Error" if "ivle.handlerpath" is not set
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        # (this is valid as it reflects an error in the Apache config
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        # But give useful feedback in debug mode
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        raise Exception("Missing configuration option 'ivle.handlerpath'")