1 files changed, 54 insertions, 0 deletions
diff --git a/projects/g-cloud-logging-py/fuzz_handlers.py b/projects/g-cloud-logging-py/fuzz_handlers.py
new file mode 100644
index 00000000..4854d1f0
--- /dev/null
+++ b/projects/g-cloud-logging-py/fuzz_handlers.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python3
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import atheris
+import sys
+import logging
+with atheris.instrument_imports():
+    import google.cloud.logging_v2.handlers.handlers as handlers
+    import google.cloud.logging_v2.handlers.structured_log as log    
+
+def TestInput(data):
+    fdp = atheris.FuzzedDataProvider(data)
+
+    logname = fdp.ConsumeString(100)
+    message = fdp.ConsumeString(100)
+    record = logging.LogRecord(
+        logname, logging.INFO, None, None, message, None, None
+    )
+
+    handlers.CloudLoggingFilter._infer_source_location(record)
+    filter = handlers.CloudLoggingFilter(record)
+
+    handler = log.StructuredLogHandler(
+        labels={
+            fdp.ConsumeString(10):fdp.ConsumeString(20),
+            fdp.ConsumeString(10):fdp.ConsumeString(20)
+        },
+        project_id=fdp.ConsumeString(100)
+    )
+    try:
+        handler.format(record)
+        handlers._format_and_parse_message(record, handler)
+        handlers.setup_logging(handler)
+    except ValueError as e:
+        if "Formatting field not found in record" not in str(e):
+            raise e
+def main():
+    atheris.Setup(sys.argv, TestInput, enable_python_coverage=True)
+    atheris.Fuzz()
+
+if __name__ == "__main__":
+    main()