WebDAVSrcHandler.py 5.33 KB
##############################################################################
#
# Zope Public License (ZPL) Version 1.0
# -------------------------------------
#
# Copyright (c) Digital Creations.  All rights reserved.
#
# This license has been certified as Open Source(tm).
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions in source code must retain the above copyright
#    notice, this list of conditions, and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions, and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
#
# 3. Digital Creations requests that attribution be given to Zope
#    in any manner possible. Zope includes a "Powered by Zope"
#    button that is installed by default. While it is not a license
#    violation to remove this button, it is requested that the
#    attribution remain. A significant investment has been put
#    into Zope, and this effort will continue if the Zope community
#    continues to grow. This is one way to assure that growth.
#
# 4. All advertising materials and documentation mentioning
#    features derived from or use of this software must display
#    the following acknowledgement:
#
#      "This product includes software developed by Digital Creations
#      for use in the Z Object Publishing Environment
#      (http://www.zope.org/)."
#
#    In the event that the product being advertised includes an
#    intact Zope distribution (with copyright and license included)
#    then this clause is waived.
#
# 5. Names associated with Zope or Digital Creations must not be used to
#    endorse or promote products derived from this software without
#    prior written permission from Digital Creations.
#
# 6. Modified redistributions of any form whatsoever must retain
#    the following acknowledgment:
#
#      "This product includes software developed by Digital Creations
#      for use in the Z Object Publishing Environment
#      (http://www.zope.org/)."
#
#    Intact (re-)distributions of any official Zope release do not
#    require an external acknowledgement.
#
# 7. Modifications are encouraged but must be packaged separately as
#    patches to official Zope releases.  Distributions that do not
#    clearly separate the patches from the original work must be clearly
#    labeled as unofficial distributions.  Modifications which do not
#    carry the name Zope may be packaged in any form, as long as they
#    conform to all of the clauses above.
#
#
# Disclaimer
#
#   THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
#   EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
#   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
#   PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
#
#
# This software consists of contributions made by Digital Creations and
# many individuals on behalf of Digital Creations.  Specific
# attributions are listed in the accompanying credits file.
#
##############################################################################

"""
    Special HTTP handler which forces GET requests to return the "source"
    of documents (uses 'manage_FTPget').  Works around current WebDAV
    clients' failure to implement the "source-link" feature of the spec.
"""

__version__ = "1.0"

from HTTPServer import zhttp_handler
import string, os

class WebDAVSrcHandler( zhttp_handler ):
    """
    """
    def get_environment( self, request ):
        """
            Munge the request to ensure that we call manage_FTPGet.
        """
        env = zhttp_handler.get_environment( self, request )

        # Set a flag to indicate this request came through the WebDAV source
        # port server.
        env['WEBDAV_SOURCE_PORT'] = 1
        
        if env['REQUEST_METHOD'] == 'GET':
            path_info = env['PATH_INFO']
            path_info = os.path.join( path_info, 'manage_FTPget' )
            path_info = os.path.normpath( path_info )
            if os.sep != '/':
                path_info = string.replace( path_info, os.sep, '/' )
            env['PATH_INFO'] = path_info


        # Workaround for lousy WebDAV implementation of M$ Office 2K.
        # Requests for "index_html" are *sometimes* send as "index_html."
        # We check the user-agent and remove a trailing dot for PATH_INFO
        # and PATH_TRANSLATED

        if string.find(env.get("HTTP_USER_AGENT",""),"Microsoft Data Access Internet Publishing Provider")>-1:
            if env["PATH_INFO"][-1]=='.':
                env["PATH_INFO"] = env["PATH_INFO"][:-1]             

            if env["PATH_TRANSLATED"][-1]=='.':
                env["PATH_TRANSLATED"] = env["PATH_TRANSLATED"][:-1]             

        return env