python-protobuf: initial integration (#7515)

* python-protobuf: initial integration

* nit

* update to latest python base image

1 files changed, 48 insertions, 0 deletions

diff --git a/projects/protobuf-python/fuzz_protobuf.py b/projects/protobuf-python/fuzz_protobuf.py
new file mode 100644
index 00000000..02c24ce5
--- /dev/null
+++ b/projects/protobuf-python/fuzz_protobuf.py
@@ -0,0 +1,48 @@
+#!/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 os
+import sys
+import atheris
+
+with atheris.instrument_imports():
+  import test_full_pb2
+  from google.protobuf.message import DecodeError
+
+@atheris.instrument_func
+def TestOneInput(input_bytes):
+  # We need to make the file an absolute path
+  testfile_path = os.path.join(os.getcwd(), "serialized.bin")
+  with open(testfile_path, "wb") as f:
+    f.write(input_bytes)
+
+  pbmsg = test_full_pb2.TestMessSubMess()
+  with open(testfile_path, "rb") as fd:
+    try:
+      pbmsg.ParseFromString(fd.read())
+    except DecodeError:
+      None
+
+  os.remove(testfile_path)
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()