From fd267349ac7a5adf59fb0ac36c4b4ff50e6f78a5 Mon Sep 17 00:00:00 2001
From: DavidKorczynski <david@adalogics.com>
Date: Tue, 21 Feb 2023 11:49:43 +0000
Subject: [PATCH] nbclassic: initial integration (#9771)

Signed-off-by: David Korczynski <david@adalogics.com>
---
 projects/nbclassic/Dockerfile   | 20 ++++++++++++++++++
 projects/nbclassic/build.sh     | 20 ++++++++++++++++++
 projects/nbclassic/fuzz_cell.py | 37 +++++++++++++++++++++++++++++++++
 projects/nbclassic/project.yaml | 10 +++++++++
 4 files changed, 87 insertions(+)
 create mode 100644 projects/nbclassic/Dockerfile
 create mode 100644 projects/nbclassic/build.sh
 create mode 100644 projects/nbclassic/fuzz_cell.py
 create mode 100644 projects/nbclassic/project.yaml

diff --git a/projects/nbclassic/Dockerfile b/projects/nbclassic/Dockerfile
new file mode 100644
index 000000000..b1c8ca914
--- /dev/null
+++ b/projects/nbclassic/Dockerfile
@@ -0,0 +1,20 @@
+#!/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 apt-get update && apt-get install -y npm libffi-dev
+RUN pip3 install --upgrade pip cython notebook
+RUN git clone https://github.com/jupyter/nbclassic nbclassic
+COPY *.sh *py $SRC/
+WORKDIR $SRC/nbclassic
diff --git a/projects/nbclassic/build.sh b/projects/nbclassic/build.sh
new file mode 100644
index 000000000..83cdadf8c
--- /dev/null
+++ b/projects/nbclassic/build.sh
@@ -0,0 +1,20 @@
+#!/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 .
+for fuzzer in $(find $SRC -name 'fuzz_*.py'); do
+  compile_python_fuzzer $fuzzer
+done
diff --git a/projects/nbclassic/fuzz_cell.py b/projects/nbclassic/fuzz_cell.py
new file mode 100644
index 000000000..d610cd279
--- /dev/null
+++ b/projects/nbclassic/fuzz_cell.py
@@ -0,0 +1,37 @@
+#!/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
+
+from nbclassic.bundler.tools import get_cell_reference_patterns
+from nbformat.v4 import new_markdown_cell
+
+
+@atheris.instrument_func
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  new_cell = new_markdown_cell(fdp.ConsumeUnicodeNoSurrogates(4096))
+  if new_cell != None:
+    get_cell_reference_patterns(new_cell)
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()
diff --git a/projects/nbclassic/project.yaml b/projects/nbclassic/project.yaml
new file mode 100644
index 000000000..15f155fc8
--- /dev/null
+++ b/projects/nbclassic/project.yaml
@@ -0,0 +1,10 @@
+homepage: https://github.com/jupyter/nbclassic
+main_repo: https://github.com/jupyter/nbclassic
+language: python
+fuzzing_engines:
+- libfuzzer
+sanitizers:
+- address
+- undefined
+vendor_ccs:
+- david@adalogics.com