Fix astroid KeyError _CONST_PROXY

See merge request nexedi/erp5!1683

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/BusinessTemplate_getPythonSourceCodeMessageList.py

@@ -81,16 +81,8 @@ def checkComponent(component_instance):
   code = component_instance.getTextContent()
   if six.PY2:
     code = unicode(code, 'utf8')
-  data = {'code': code}
-  try:
-    check_result_json = portal.ERP5Site_checkPythonSourceCodeAsJSON(data)
-  except Exception:
-    # pylint sometimes raises on the first attempt at importing modules, but
-    # may succeed on the second try (probably because of incomplete cleanup
-    # of partially imported moduled). We are not interested in pylint issues,
-    # we are interested in our code's issues, so give it one more try.
-    check_result_json = portal.ERP5Site_checkPythonSourceCodeAsJSON(data)
-  for annotation in json.loads(check_result_json)['annotations']:
+  for annotation in json.loads(portal.ERP5Site_checkPythonSourceCodeAsJSON(
+        {'code': code}))['annotations']:
     annotation['component_path'] = component_relative_url
     line_list.append(
       Message(

product/ERP5Type/patches/pylint.py

@@ -372,6 +372,25 @@ else:
         return m
     MANAGER.register_transform(Module, wendelin_transform, lambda node: node.name == 'wendelin')
 
+# prevent a crash with cryptography:
+#   File "develop-eggs/astroid-1.3.8+slapospatched001-py2.7.egg/astroid/raw_building.py", line 360, in _set_proxied
+#      return _CONST_PROXY[const.value.__class__]
+#  KeyError: <type 'CompiledFFI'>
+import cryptography.hazmat.bindings._openssl
+_register_module_extender_from_live_module(
+  'cryptography.hazmat.bindings._openssl',
+  cryptography.hazmat.bindings._openssl)
+
+
+try:
+  import xmlsec
+except ImportError:
+  pass
+else:
+  _register_module_extender_from_live_module('xmlsec', xmlsec)
+  _register_module_extender_from_live_module('xmlsec.tree', xmlsec.tree)
+  _register_module_extender_from_live_module('xmlsec.template', xmlsec.template)
+
 # Properly search for namespace packages: original astroid (as of 1.3.8) only
 # checks at top-level and it doesn't work for Shared.DC.ZRDB (defined in
 # Products.ZSQLMethods; Shared and Shared.DC being a namespace package defined

product/ERP5Type/tests/testDynamicClassGeneration.py

@@ -2285,12 +2285,39 @@ class FooBar(ValidationFailed):
   def __init__(self, *args, **kw):
     super(FooBar, self).__init__(*args, **kw)
 
+# Test for various pylint fixes
+
 # Transforms for Zope which should ideally be upstream'ed
 from AccessControl.PermissionRole import rolesForPermissionOn, PermissionRole, imPermissionRole, _what_not_even_god_should_do # pylint: disable=unused-import
 
 # Monkey patch of astroid 1.3.8: it raised 'no-name-in-module' because
 # Shared.DC was not considered a namespace package
 from Shared.DC.ZRDB.Results import Results # pylint: disable=unused-import
+
+import lxml.etree
+lxml.etree.Element('test')
+
+from BTrees.OOBTree import OOBTree
+OOBTree()
+
+from cryptography.hazmat.primitives.asymmetric import rsa
+rsa.generate_private_key(
+  public_exponent=65537,
+  key_size=2048,
+).public_key()
+
+def xmlsec_decrypt():
+  # from https://xmlsec.readthedocs.io/en/stable/examples.html#decrypt
+  import xmlsec
+  manager = xmlsec.KeysManager()
+  key = xmlsec.Key.from_file('rsakey.pem', xmlsec.constants.KeyDataFormatPem)
+  manager.add_key(key)
+  enc_ctx = xmlsec.EncryptionContext(manager)
+  root = lxml.etree.parse("enc1-res.xml").getroot()
+  enc_data = xmlsec.tree.find_child(root, "EncryptedData", xmlsec.constants.EncNs)
+  decrypted = enc_ctx.decrypt(enc_data)
+  print(lxml.etree.tostring(decrypted))
+
 """ % (dict(namespace=namespace,
             reference1=imported_reference1,
             module2=imported_module2,