WebDAV: Subfolder of CMF Folder were created at the root of the site.

As MKCOL_handler() is not implemented on OFS.Folder.Folder class, the one from
ERP5Site was acquired when calling webdav.NullResource.NullResource.MKCOL().

product/ERP5Type/ZopePatch.py

@@ -75,6 +75,7 @@ from Products.ERP5Type.patches import OFSImage
 from Products.ERP5Type.patches import _transaction
 from Products.ERP5Type.patches import default_zpublisher_encoding
 from Products.ERP5Type.patches import DCWorkflowGraph
+from Products.ERP5Type.patches import WebDAV
 
 # These symbols are required for backward compatibility
 from Products.ERP5Type.patches.PropertyManager import ERP5PropertyManager

product/ERP5Type/patches/WebDAV.py

+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2002 Zope Foundation and Contributors.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+from Acquisition import aq_base
+
+from zExceptions import MethodNotAllowed
+from zExceptions import Forbidden
+
+from webdav.common import UnsupportedMediaType
+from webdav.common import Locked
+from webdav.common import isDavCollection
+from webdav.common import PreconditionFailed
+from webdav.interfaces import IWriteLock
+
+def MKCOL(self, REQUEST, RESPONSE):
+    """Create a new collection resource."""
+    self.dav__init(REQUEST, RESPONSE)
+    if REQUEST.get('BODY', ''):
+        raise UnsupportedMediaType, 'Unknown request body.'
+
+    name=self.__name__
+    parent = self.__parent__
+
+    if hasattr(aq_base(parent), name):
+        raise MethodNotAllowed, 'The name %s is in use.' % name
+    if not isDavCollection(parent):
+        raise Forbidden, 'Cannot create collection at this location.'
+
+    ifhdr = REQUEST.get_header('If', '')
+    if IWriteLock.providedBy(parent) and parent.wl_isLocked():
+        if ifhdr:
+            parent.dav__simpleifhandler(REQUEST, RESPONSE, col=1)
+        else:
+            raise Locked
+    elif ifhdr:
+        # There was an If header, but the parent is not locked
+        raise PreconditionFailed
+
+    # Add hook for webdav/FTP MKCOL (Collector #2254) (needed for CMF)
+    # Monkey patched to not acquire MKCOL_handler() from ERP5Site
+    if hasattr(aq_base(parent), 'MKCOL_handler'):
+        mkcol_handler = parent.MKCOL_handler
+    else:
+        mkcol_handler = parent.manage_addFolder
+
+    mkcol_handler(name)
+
+    RESPONSE.setStatus(201)
+    RESPONSE.setBody('')
+    return RESPONSE
+
+from webdav.NullResource import NullResource
+NullResource.MKCOL = MKCOL