python-cloud-core: initial integration (#8010)

* python-cloud-core: initial integration

Initial integration of https://github.com/googleapis/python-cloud-core

* nit

projects/g-api-python-cloud-core/Dockerfile

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+# 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.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder-python
+RUN pip3 install --upgrade pip
+RUN git clone https://github.com/googleapis/python-cloud-core
+COPY build.sh *.py $SRC/
+WORKDIR python-cloud-core

projects/g-api-python-cloud-core/build.sh

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+#!/bin/bash -eu
+# 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.
+#
+################################################################################
+
+pip3 install .
+
+for fuzzer in $(find $SRC -name 'fuzz_*.py'); do
+  compile_python_fuzzer $fuzzer
+done

projects/g-api-python-cloud-core/fuzz_helpers.py

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+#!/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 json
+
+# We instrument all functions when initiating atheris
+from google.cloud import _helpers
+
+def TestOneInput(data):
+  if len(data) < 100:
+    return
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    loaded_data = json.loads(fdp.ConsumeString(300))
+    success = True
+  except Exception:
+    success = False
+
+  if success:
+    try:
+      _helpers._ensure_tuple_or_list(loaded_data)
+    except TypeError:
+      pass
+
+  try:
+    _helpers._bytes_to_unicode(data)
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._time_from_iso8601_time_naive(fdp.ConsumeString(100))
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._rfc3339_nanos_to_datetime(fdp.ConsumeString(100))
+  except ValueError:
+    pass
+
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    _helpers._name_from_project_path(
+      fdp.ConsumeString(60),
+      fdp.ConsumeString(60),
+      fdp.ConsumeString(60)
+    )
+  except ValueError:
+    pass
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+if __name__ == "__main__":
+  main()

projects/g-api-python-cloud-core/project.yaml

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+fuzzing_engines:
+- libfuzzer
+homepage: https://github.com/googleapis/python-cloud-core
+language: python
+main_repo: https://github.com/googleapis/python-cloud-core
+sanitizers:
+- address
+- undefined
+vendor_ccs:
+- david@adalogics.com
+- adam@adalogics.com
+- arthur.chan@adalogics.com