packaging: initial integration (#9315)

Signed-off-by: David Korczynski <david@adalogics.com>

Signed-off-by: David Korczynski <david@adalogics.com>

projects/packaging/Dockerfile

@@ -0,0 +1,18 @@
+#!/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.
+FROM gcr.io/oss-fuzz-base/base-builder-python
+RUN git clone https://github.com/pypa/packaging packaging
+COPY *.sh *py $SRC/
+WORKDIR $SRC/packaging

projects/packaging/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 .
+
+# Build fuzzers in $OUT.
+for fuzzer in $(find $SRC -name 'fuzz_*.py'); do
+  compile_python_fuzzer $fuzzer
+done

projects/packaging/fuzz_packaging.py

@@ -0,0 +1,76 @@
+#!/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.
+"""Target several modules in the packaging project."""
+
+import sys
+import atheris
+from packaging.utils import (
+  canonicalize_version,
+  parse_wheel_filename,
+  parse_sdist_filename,
+  InvalidSdistFilename,
+  InvalidWheelFilename
+)
+
+from packaging.specifiers import InvalidSpecifier, Specifier
+
+
+def fuzz_utils(data):
+  """Logic to hit routines in src/packaging/utils."""
+  fdp = atheris.FuzzedDataProvider(data)
+  canonicalize_version(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
+  try:
+    parse_sdist_filename(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
+  except InvalidSdistFilename:
+    pass
+
+  try:
+    parse_wheel_filename(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
+  except InvalidWheelFilename:
+    pass
+
+
+def fuzz_specifier(data):
+  """Logic to hit routines in src/packaging/specifiers."""
+  fdp = atheris.FuzzedDataProvider(data)
+  try:
+    spec1 = Specifier(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
+    spec2 = Specifier(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize))
+  except InvalidSpecifier:
+    return
+
+  b1 = spec1 == spec2
+  b2 = spec1 != spec2
+  b3 = spec1 <= spec2
+  b4 = spec1 >= spec2
+  b5 = spec1 < spec2
+  b6 = spec1 > spec2
+  b7 = spec1.constains(fdp.ConsumeUnicodeNoSurrogates(24))
+
+
+def TestOneInput(data):
+  """Fuzzer entrypoint, wrapper around fuzz_* routines."""
+  fuzz_utils(data)
+  fuzz_specifier(data)
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()

projects/packaging/project.yaml

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+fuzzing_engines:
+- libfuzzer
+homepage: https://github.com/pypa/packaging
+language: python
+main_repo: https://github.com/pypa/packaging
+sanitizers:
+- address
+- undefined
+vendor_ccs:
+- david@adalogics.com