+    
+    meta_type = 'Attachment container'
+    security = ClassSecurityInfo()
+    
+    def __init__(self):
+        self.id = 'attachments'
+
+    security.declareProtected(ModifyPortalContent, 'put_upload')
+    def put_upload(self, REQUEST, RESPONSE):
+        """ Upload a content thru webdav put method.
+            The default behavior (NullRessource.PUT + PortalFolder.PUT_factory)
+            disallow files names with '_' at the begining.
+        """
+
+        self.dav__init(REQUEST, RESPONSE)
+        fileName = unquote(REQUEST.getHeader('X-File-Name', ''))
+        validId = makeValidId(self, fileName, allow_dup=True)
+
+        ifhdr = REQUEST.get_header('If', '')
+        if self.wl_isLocked():
+            if ifhdr:
+                self.dav__simpleifhandler(REQUEST, RESPONSE, col=1)
+            else:
+                raise Locked
+        elif ifhdr:
+            raise PreconditionFailed
+
+        if int(REQUEST.get('CONTENT_LENGTH') or 0) > LARGE_FILE_THRESHOLD:
+            file = REQUEST['BODYFILE']
+            body = file.read(LARGE_FILE_THRESHOLD)
+            file.seek(0)
+        else:
+            body = REQUEST.get('BODY', '')
+
+        typ=REQUEST.get_header('content-type', None)
+        if typ is None:
+            typ, enc=guess_content_type(validId, body)
+
+        if self.checkIdAvailable(validId) :
+            if typ.startswith('image/') :
+                utool = getUtilityByInterfaceName('Products.CMFCore.interfaces.IURLTool')
+                portal = utool.getPortalObject()
+                thumbSize = {'thumb_height' : portal.getProperty('thumb_size', 192),
+                             'thumb_width'  : portal.getProperty('thumb_size', 192)}
+                ob = Photo(validId, fileName, '', **thumbSize)
+            else :
+                ob = File(validId, fileName, '')
+            
+            self._setObject(validId, ob)
+            httpRespCode = 201
+        else :
+            httpRespCode = 200
+            ob = self._getOb(validId)
+
+        # We call _verifyObjectPaste with verify_src=0, to see if the
+        # user can create this type of object (and we don't need to
+        # check the clipboard.
+        try:
+            self._verifyObjectPaste(ob.__of__(self), 0)
+        except CopyError:
+             sMsg = 'Unable to create object of class %s in %s: %s' % \
+                    (ob.__class__, repr(self), sys.exc_info()[1],)
+             raise Unauthorized, sMsg
+
+        ob.PUT(REQUEST, RESPONSE)
+        RESPONSE.setStatus(httpRespCode)
+        RESPONSE.setHeader('Content-Type', 'text/xml;;charset=utf-8')
+        return '<element id="%s" title="%s"/>' % (ob.getId(), escape(ob.title_or_id()))
+