gitpython: initial integration (#9364)

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

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

projects/gitpython/Dockerfile

@@ -0,0 +1,18 @@
+#!/usr/bin/python3
+# Copyright 2023 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/gitpython-developers/gitpython gitpython
+COPY *.sh *py $SRC/
+WORKDIR $SRC/gitpython

projects/gitpython/build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash -eu
+# Copyright 2023 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/gitpython/fuzz_config.py

@@ -0,0 +1,45 @@
+#!/usr/bin/python3
+# Copyright 2023 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 sys
+import io
+import atheris
+
+import configparser
+from git import GitConfigParser
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  sio = io.BytesIO(data)
+  sio.name = "/tmp/fuzzconfig.config"
+  git_config = GitConfigParser(sio)
+  try:
+    git_config.read()
+  except configparser.MissingSectionHeaderError:
+    pass
+  except configparser.ParsingError:
+    pass
+  except UnicodeDecodeError:
+    pass
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()

projects/gitpython/fuzz_tree.py

@@ -0,0 +1,58 @@
+#!/usr/bin/python3
+# Copyright 2023 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 io
+import sys
+import shutil
+import atheris
+
+from git.objects import Tree
+from git import Repo
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  git_dir = "/tmp/.git"
+  head_file = os.path.join(git_dir, "HEAD")
+  refs_dir = os.path.join(git_dir, "refs")
+  common_dir = os.path.join(git_dir, "commondir")
+  objects_dir = os.path.join(git_dir, "objects")
+
+  if os.path.isdir(git_dir):
+    shutil.rmtree(git_dir)
+
+  os.mkdir(git_dir)
+  with open(head_file, "w") as f:
+    f.write(fdp.ConsumeUnicodeNoSurrogates(1024))
+  os.mkdir(refs_dir)
+  os.mkdir(common_dir)
+  os.mkdir(objects_dir)
+
+  _repo = Repo("/tmp/")
+
+  fuzz_tree = Tree(_repo, Tree.NULL_BIN_SHA, 0, "")
+  try:
+    fuzz_tree._deserialize(io.BytesIO(data))
+  except IndexError:
+    pass
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()

projects/gitpython/project.yaml

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