httpcore: initial integration (#9737)

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

projects/httpcore/Dockerfile

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+#!/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 pip3 install --upgrade pip
+RUN git clone https://github.com/encode/httpcore httpcore
+COPY *.sh *py $SRC/
+WORKDIR $SRC/httpcore

projects/httpcore/build.sh

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+#!/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/httpcore/fuzz_http11.py

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+#!/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 atheris
+
+import httpcore
+from httpcore.backends.mock import MockStream
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  stream = MockStream(fdp.ConsumeBytes(2048))
+  origin = httpcore.Origin(fdp.ConsumeBytes(24), fdp.ConsumeBytes(24), 443)
+  try:
+    with httpcore.HTTP11Connection(origin=origin,
+                                   stream=stream,
+                                   keepalive_expiry=5.0) as conn:
+      with conn.stream("GET", "http://127.0.0.1") as response:
+        response.status
+  except RuntimeError:
+    pass
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()

projects/httpcore/project.yaml

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