Revert "feat: refactor Function URL permissions (#3735)" (#3761)

Author: roger-zhangg

.cfnlintrc.yaml

@@ -1,9 +1,6 @@
 templates:
   - tests/translator/output/**/*.json
 ignore_templates:
-  - tests/translator/output/**/function_with_function_url_config.json
-  - tests/translator/output/**/function_with_function_url_config_and_autopublishalias.json
-  - tests/translator/output/**/function_with_function_url_config_without_cors_config.json
   - tests/translator/output/**/error_*.json # Fail by design
   - tests/translator/output/**/api_http_paths_with_if_condition.json
   - tests/translator/output/**/api_http_paths_with_if_condition_no_value_else_case.json

integration/resources/expected/single/basic_function_with_function_url_dual_auth.json

@@ -130,73 +130,6 @@ def test_basic_function_with_url_config(self, file_name, qualifier):
         self.assertEqual(function_url_config["Cors"], cors_config)
         self._assert_invoke(lambda_client, function_name, qualifier, 200)
 
-    @parameterized.expand(
-        [
-            ("single/basic_function_with_function_url_dual_auth", None),
-            ("single/basic_function_with_function_url_with_autopuplishalias_dual_auth", "live"),
-        ]
-    )
-    @skipIf(current_region_does_not_support([LAMBDA_URL]), "Lambda Url is not supported in this testing region")
-    def test_basic_function_with_url_dual_auth(self, file_name, qualifier):
-        """
-        Creates a basic lambda function with Function Url with authtype: None
-        Verifies that 2 AWS::Lambda::Permission resources are created:
-        - lambda:InvokeFunctionUrl
-        - lambda:InvokeFunction with InvokedViaFunctionUrl: True
-        """
-        self.create_and_verify_stack(file_name)
-
-        # Get Lambda permissions
-        lambda_permissions = self.get_stack_resources("AWS::Lambda::Permission")
-
-        # Verify we have exactly 2 permissions
-        self.assertEqual(len(lambda_permissions), 2, "Expected exactly 2 Lambda permissions")
-
-        # Check for the expected permission logical IDs
-        invoke_function_url_permission = None
-        invoke_permission = None
-
-        for permission in lambda_permissions:
-            logical_id = permission["LogicalResourceId"]
-            if "MyLambdaFunctionUrlPublicPermissions" in logical_id:
-                invoke_function_url_permission = permission
-            elif "MyLambdaFunctionURLInvokeAllowPublicAccess" in logical_id:
-                invoke_permission = permission
-
-        # Verify both permissions exist
-        self.assertIsNotNone(invoke_function_url_permission, "Expected MyLambdaFunctionUrlPublicPermissions to exist")
-        self.assertIsNotNone(invoke_permission, "Expected MyLambdaFunctionURLInvokeAllowPublicAccess to exist")
-
-        # Get the function name and URL
-        function_name = self.get_physical_id_by_type("AWS::Lambda::Function")
-        lambda_client = self.client_provider.lambda_client
-
-        # Get the function URL configuration to verify auth type
-        function_url_config = (
-            lambda_client.get_function_url_config(FunctionName=function_name, Qualifier=qualifier)
-            if qualifier
-            else lambda_client.get_function_url_config(FunctionName=function_name)
-        )
-
-        # Verify the auth type is NONE
-        self.assertEqual(function_url_config["AuthType"], "NONE", "Expected AuthType to be NONE")
-
-        # Get the template to check for InvokedViaFunctionUrl property
-        cfn_client = self.client_provider.cfn_client
-        template = cfn_client.get_template(StackName=self.stack_name, TemplateStage="Processed")
-        template_body = template["TemplateBody"]
-
-        # Check if the InvokePermission has InvokedViaFunctionUrl: True
-        # This is a bit hacky but we don't have direct access to the resource properties
-        # We're checking if the string representation of the template contains this property
-        template_str = str(template_body)
-        self.assertIn("InvokedViaFunctionUrl", template_str, "Expected InvokedViaFunctionUrl property in the template")
-
-        # Get the function URL from stack outputs
-        function_url = self.get_stack_output("FunctionUrl")["OutputValue"]
-        # Invoke the function URL and verify the response
-        self._verify_get_request(function_url, self.FUNCTION_OUTPUT)
-
     @skipIf(current_region_does_not_support([CODE_DEPLOY]), "CodeDeploy is not supported in this testing region")
     def test_function_with_deployment_preference_alarms_intrinsic_if(self):
         self.create_and_verify_stack("single/function_with_deployment_preference_alarms_intrinsic_if")

integration/resources/expected/single/basic_function_with_function_url_with_autopuplishalias_dual_auth.json

@@ -139,7 +139,6 @@ class LambdaPermission(Resource):
         "SourceArn": GeneratedProperty(),
         "EventSourceToken": GeneratedProperty(),
         "FunctionUrlAuthType": GeneratedProperty(),
-        "InvokedViaFunctionUrl": GeneratedProperty(),
     }
 
 

integration/resources/templates/single/basic_function_with_function_url_dual_auth.yaml

@@ -321,12 +321,8 @@ def to_cloudformation(self, **kwargs):  # type: ignore[no-untyped-def] # noqa: P
             lambda_url = self._construct_function_url(lambda_function, lambda_alias, self.FunctionUrlConfig)
             resources.append(lambda_url)
             url_permission = self._construct_url_permission(lambda_function, lambda_alias, self.FunctionUrlConfig)
-            invoke_dual_auth_permission = self._construct_invoke_permission(
-                lambda_function, lambda_alias, self.FunctionUrlConfig
-            )
-            if url_permission and invoke_dual_auth_permission:
+            if url_permission:
                 resources.append(url_permission)
-                resources.append(invoke_dual_auth_permission)
 
         self._validate_deployment_preference_and_add_update_policy(
             kwargs.get("deployment_preference_collection"),
@@ -336,6 +332,7 @@ def to_cloudformation(self, **kwargs):  # type: ignore[no-untyped-def] # noqa: P
             self.get_passthrough_resource_attributes(),
             feature_toggle,
         )
+
         event_invoke_policies: List[Dict[str, Any]] = []
         if self.EventInvokeConfig:
             function_name = lambda_function.logical_id
@@ -1228,13 +1225,9 @@ def _construct_url_permission(
         lambda_function : LambdaUrl
             Lambda Function resource
 
-        lambda_alias : LambdaAlias
+        llambda_alias : LambdaAlias
             Lambda Alias resource
 
-
-        function_url_config: Dict
-            Function url config used to create FURL
-
         Returns
         -------
         LambdaPermission
@@ -1256,47 +1249,6 @@ def _construct_url_permission(
         lambda_permission.FunctionUrlAuthType = auth_type
         return lambda_permission
 
-    def _construct_invoke_permission(
-        self, lambda_function: LambdaFunction, lambda_alias: Optional[LambdaAlias], function_url_config: Dict[str, Any]
-    ) -> Optional[LambdaPermission]:
-        """
-        Construct the lambda permission associated with the function invoke resource in a case
-        for public access when AuthType is NONE
-
-        Parameters
-        ----------
-        lambda_function : LambdaUrl
-            Lambda Function resource
-
-        lambda_alias : LambdaAlias
-            Lambda Alias resource
-
-        function_url_config: Dict
-            Function url config used to create FURL
-
-        Returns
-        -------
-        LambdaPermission
-            The lambda permission appended to a function that allow function invoke only from Function URL
-        """
-        # create lambda:InvokeFunction with InvokedViaFunctionUrl=True
-        auth_type = function_url_config.get("AuthType")
-
-        if auth_type not in ["NONE"] or is_intrinsic(function_url_config):
-            return None
-
-        logical_id = f"{lambda_function.logical_id}URLInvokeAllowPublicAccess"
-        lambda_permission_attributes = self.get_passthrough_resource_attributes()
-        lambda_invoke_permission = LambdaPermission(logical_id=logical_id, attributes=lambda_permission_attributes)
-        lambda_invoke_permission.Action = "lambda:InvokeFunction"
-        lambda_invoke_permission.Principal = "*"
-        lambda_invoke_permission.FunctionName = (
-            lambda_alias.get_runtime_attr("arn") if lambda_alias else lambda_function.get_runtime_attr("name")
-        )
-        lambda_invoke_permission.InvokedViaFunctionUrl = True
-
-        return lambda_invoke_permission
-
 
 class SamApi(SamResourceMacro):
     """SAM rest API macro."""

integration/resources/templates/single/basic_function_with_function_url_with_autopuplishalias_dual_auth.yaml

@@ -583,29 +583,11 @@ def test_with_valid_function_url_config_with_lambda_permission(self):
 
         cfnResources = function.to_cloudformation(**self.kwargs)
         generatedUrlList = [x for x in cfnResources if isinstance(x, LambdaPermission)]
-        self.assertEqual(generatedUrlList.__len__(), 2)
-        for permission in generatedUrlList:
-            self.assertEqual(permission.FunctionName, {"Ref": "foo"})
-            self.assertEqual(permission.Principal, "*")
-            self.assertTrue(permission.Action in ["lambda:InvokeFunctionUrl", "lambda:InvokeFunction"])
-            if permission.Action == "lambda:InvokeFunctionUrl":
-                self.assertEqual(permission.FunctionUrlAuthType, "NONE")
-            if permission.Action == "lambda:InvokeFunction":
-                self.assertEqual(permission.InvokedViaFunctionUrl, True)
-
-    @patch("boto3.session.Session.region_name", "ap-southeast-1")
-    def test_with_aws_iam_function_url_config_with_lambda_permission(self):
-        function = SamFunction("foo")
-        function.CodeUri = "s3://foobar/foo.zip"
-        function.Runtime = "foo"
-        function.Handler = "bar"
-        # When create FURL with AWS_IAM
-        function.FunctionUrlConfig = {"AuthType": "AWS_IAM"}
-
-        cfnResources = function.to_cloudformation(**self.kwargs)
-        generatedUrlList = [x for x in cfnResources if isinstance(x, LambdaPermission)]
-        # Then no permisssion should be auto created
-        self.assertEqual(generatedUrlList.__len__(), 0)
+        self.assertEqual(generatedUrlList.__len__(), 1)
+        self.assertEqual(generatedUrlList[0].Action, "lambda:InvokeFunctionUrl")
+        self.assertEqual(generatedUrlList[0].FunctionName, {"Ref": "foo"})
+        self.assertEqual(generatedUrlList[0].Principal, "*")
+        self.assertEqual(generatedUrlList[0].FunctionUrlAuthType, "NONE")
 
     @patch("boto3.session.Session.region_name", "ap-southeast-1")
     def test_with_invalid_function_url_config_with_authorization_type_value_as_None(self):

integration/single/test_basic_function.py

@@ -58,17 +58,6 @@
       },
       "Type": "AWS::IAM::Role"
     },
-    "MyFunctionURLInvokeAllowPublicAccess": {
-      "Properties": {
-        "Action": "lambda:InvokeFunction",
-        "FunctionName": {
-          "Ref": "MyFunction"
-        },
-        "InvokedViaFunctionUrl": true,
-        "Principal": "*"
-      },
-      "Type": "AWS::Lambda::Permission"
-    },
     "MyFunctionUrl": {
       "Properties": {
         "AuthType": "NONE",