croniter: initial integration (google#7753)

croniter: initialer integration

projects/croniter/Dockerfile

@@ -0,0 +1,20 @@
+# 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/kiorky/croniter
+COPY build.sh *.py $SRC/
+WORKDIR croniter

projects/croniter/build.sh

@@ -0,0 +1,23 @@
+#!/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/croniter/fuzz_iter.py

@@ -0,0 +1,52 @@
+#!/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
+
+from datetime import datetime
+
+with atheris.instrument_imports():
+  from croniter import (
+    croniter,
+    CroniterBadCronError,
+    CroniterBadDateError
+  )
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  base = datetime(2012, 4, 6, 13, 26, 10)
+  try:
+    itr = croniter(fdp.ConsumeString(50), base)
+    idx = 0
+    for v in itr.all_next():
+      idx += 1
+      if idx > 10:
+        break
+  except (CroniterBadCronError, CroniterBadDateError) as e:
+    pass
+  except NameError as e:
+    # Catch https://github.com/kiorky/croniter/blob/bb5a45196e5f8f15fd0890f4ee5e9697671a3fe2/src/croniter/croniter.py#L781
+    if not "'exc' is not defined" in str(e):
+      raise e
+
+
+def main():
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+if __name__ == "__main__":
+  main()

projects/croniter/project.yaml

@@ -0,0 +1,11 @@
+fuzzing_engines:
+- libfuzzer
+homepage: https://github.com/kiorky/croniter
+language: python
+main_repo: https://github.com/kiorky/croniter
+sanitizers:
+- address
+- undefined
+vendor_ccs:
+- [email protected]
+- [email protected]