Fix a issue that BusinessTemplate unexpectedly removes the skins of another...

Fix a issue that BusinessTemplate unexpectedly removes the skins of another skin folder when upgrading.

To fix the issue, (un)restrectedTraverse calling are replaced with the new method, (un)restrictedResolveValue. In the method, it is used get_item instead of _getOb to take into account outside ERP5, too.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@36854 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -32,7 +32,7 @@ from Shared.DC.ZRDB.Connection import Connection as RDBConnection
 from Products.ERP5Type.DiffUtils import DiffFile
 from Products.ERP5Type.Globals import Persistent, PersistentMapping
 from Acquisition import Implicit, aq_base, aq_inner, aq_parent
-from AccessControl import ClassSecurityInfo
+from AccessControl import ClassSecurityInfo, Unauthorized, getSecurityManager
 from Products.CMFCore.utils import getToolByName
 from Products.ERP5Type.Accessor.Constant import PropertyGetter as ConstantGetter
 from Products.ERP5Type.Base import WorkflowMethod, _aq_reset
@@ -613,6 +613,84 @@ class BaseTemplateItem(Implicit, Persistent):
     """
     return self.__class__.__name__[:-12]
 
+  def restrictedResolveValue(self, context=None, path=None, default=_MARKER):
+    """
+      Get the value with checking the security.
+      This method does not acquire the parent.
+    """
+    def restrictedGetItem(container, key, default):
+      validate = getSecurityManager().validate
+      try:
+        value = container[key]
+      except KeyError:
+        if default is not _MARKER:
+          return default
+        return None
+      if value is not None:
+        try:
+          if not validate(container, container, key, value):
+            raise Unauthorized('unauthorized access to element %s' % key)
+        except Unauthorized:
+          # if user can't access object try to return default passed
+          if default is not _MARKER:
+            return default
+          raise
+      return value
+    return self._resolveValue(context, path, default, getItem=restrictedGetItem)
+
+  def unrestrictedResolveValue(self, context=None, path=None, default=_MARKER):
+    """
+      Get the value without checking the security.
+      This method does not acquire the parent.
+    """
+    def unrestrictedGetItem(container, key, default):
+      try:
+        return container[key]
+      except KeyError:
+        if default is not _MARKER:
+          return default
+        else:
+          return None
+    return self._resolveValue(context, path, default, getItem=unrestrictedGetItem)
+
+  def _resolveValue(self, context, path, default=_MARKER, getItem=None):
+    """
+    Resolve the value without acquire the parent.
+    """
+    if isinstance(path, basestring):
+      stack = path.split('/')
+    else:
+      stack = list(path)
+    stack.reverse()
+    value = None
+    if stack:
+      portal = aq_inner(self.getPortalObject())
+      # It can be passed with the context, so at first, searching from the context.
+      if context is None:
+        container = portal
+      else:
+        container = context
+      key = stack.pop()
+      value = getItem(container, key, default)
+
+      # resolve the value from top to down
+      while value is not None and stack:
+        key = stack.pop()
+        value = getItem(value, key, default)
+    else:
+      # When relative_url is empty, returns the context
+      return context
+
+    if value is None:
+      LOG('BusinessTemplate', WARNING,
+          'Could not access object %s' % path)
+      if default is not _MARKER:
+        return default
+      else:
+        raise KeyError
+    return value
+
+
 class ObjectTemplateItem(BaseTemplateItem):
   """
     This class is used for generic objects and as a subclass.
@@ -933,7 +1011,7 @@ class ObjectTemplateItem(BaseTemplateItem):
           container_path = path_list[:-1]
           object_id = path_list[-1]
           try:
-            container = portal.unrestrictedTraverse(container_path)
+            container = self.unrestrictedResolveValue(portal, container_path)
           except KeyError:
             # parent object can be set to nothing, in this case just go on
             container_url = '/'.join(container_path)
@@ -1162,7 +1240,7 @@ class ObjectTemplateItem(BaseTemplateItem):
         if recursive_path in update_dict:
           action = update_dict[recursive_path]
           if action in ('remove', 'save_and_remove'):
-            document = portal.restrictedTraverse(recursive_path, None)
+            document = self.restrictedResolveValue(portal, recursive_path, None)
             if document is None:
               # It happens if the parent of target path is removed before
               continue
@@ -1212,7 +1290,7 @@ class ObjectTemplateItem(BaseTemplateItem):
       container_path = relative_url.split('/')[0:-1]
       object_id = relative_url.split('/')[-1]
       try:
-        container = portal.unrestrictedTraverse(container_path)
+        container = self.unrestrictedResolveValue(portal, container_path)
         object = container._getOb(object_id) # We force access to the object to be sure
                                         # that appropriate exception is thrown
                                         # in case object is already backup and/or removed
@@ -1270,7 +1348,7 @@ class PathTemplateItem(ObjectTemplateItem):
         try:
           container_path = relative_url.split('/')[0:-1]
           object_id = relative_url.split('/')[-1]
-          container = portal.unrestrictedTraverse(container_path)
+          container = self.unrestrictedResolveValue(portal, container_path)
           if trash and trashbin is not None:
             self.portal_trash.backupObject(trashbin, container_path,
                                            object_id, save=1,
@@ -1757,7 +1835,7 @@ class WorkflowTemplateItem(ObjectTemplateItem):
           container_path = path.split('/')[:-1]
           object_id = path.split('/')[-1]
           try:
-            container = portal.unrestrictedTraverse(container_path)
+            container = self.unrestrictedResolveValue(portal, container_path)
           except KeyError:
             # parent object can be set to nothing, in this case just go on
             container_url = '/'.join(container_path)