zipp: initial integration (#8267)

projects/zipp/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 apt-get update && apt-get install -y make autoconf automake libtool
+RUN git clone --depth 1 https://github.com/jaraco/zipp zipp
+WORKDIR zipp
+COPY build.sh *.py $SRC/

projects/zipp/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/zipp/fuzz_zipp.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 os
+import sys
+import atheris
+
+import zipp
+import zipfile
+import io
+
+
+def gen_path(fdp):
+    """Generate a string with maximum 4 instances of /"""
+    s1 = fdp.ConsumeUnicodeNoSurrogates(15)
+    while s1.count("/") > 4:
+        # Replace the first occurrence of /
+        s1 = s1.replace("/", "a", 1)
+    return s1
+
+
+def build_fixture(fdp):
+    """Generate a random zip structure"""
+    data = io.BytesIO()
+    zf = zipfile.ZipFile(data, "w")
+    number_of_entries = fdp.ConsumeIntInRange(2, 10)
+    for i in range(number_of_entries):
+        zf.writestr(gen_path(fdp), fdp.ConsumeBytes(20))
+    zf.filename = "fuzzGen.zip"
+    return zf
+
+
+def TestOneInput(data):
+    fdp = atheris.FuzzedDataProvider(data)
+    try:
+        zf = build_fixture(fdp)
+    except:
+        # On any issue we return
+        return
+
+    root = zipp.Path(zf)
+    for elem in root.iterdir():
+        # perform simple operations on the elem
+        elem.is_dir()
+        elem.is_file()
+
+
+def main():
+    atheris.instrument_all()
+    atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+    atheris.Fuzz()
+
+
+if __name__ == "__main__":
+    main()

projects/zipp/project.yaml

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+homepage: "https://github.com/jaraco/zipp"
+language: python
+main_repo: "https://github.com/jaraco/zipp"
+fuzzing_engines:
+- libfuzzer
+sanitizers:
+- address
+- undefined
+vendor_ccs:
+- david@adalogics.com
+- adam@adalogics.com