Respect new "strict parsing" of emails.utils.getaddresses [6.0] (#4033

)

* Respect new strict parsing of `email.utils.getaddresses`

* changenote

* cleanup address and check early for empty value

Products/CMFPlone/PloneTool.py

@@ -137,6 +137,12 @@ def validateSingleNormalizedEmailAddress(self, address):
         if not isinstance(address, str):
             return False
 
+        address = address.strip()
+
+        # address can be empty if getaddresses has parsing errors (returns [("", "")])
+        if address == "":
+            return False
+
         sub = EMAIL_CUTOFF_RE.match(address)
         if sub is not None:
             # Address contains two newlines (possible spammer relay attack)

Products/CMFPlone/tests/testPloneTool.py

@@ -74,7 +74,6 @@ def testvalidateEmailAddresses(self):
         validInputs = (
             "[email protected]",
             "[email protected],\n [email protected]",
-            "[email protected]\n [email protected]",  # omitting comma is ok
             "[email protected],\n [email protected]",
         )
         invalidInputs = (

news/4020.bugfix

@@ -0,0 +1,2 @@
+Update for strict parsing in `email.utils.getaddresses` newest versions.
+[petschki]