docutils: extend suite (#9846)

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

projects/docutils/fuzz_rst.py

@@ -0,0 +1,78 @@
+#!/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 docutils.parsers.rst import Parser
+from docutils.frontend import get_default_settings
+from docutils.utils import new_document
+from docutils import nodes
+from docutils import ApplicationError
+from docutils.parsers.rst import tableparser
+from docutils.statemachine import StringList, string2lines
+from docutils.transforms.universal import (SmartQuotes, TestMessages,
+                                           Decorations, ExposeInternals,
+                                           Messages, FilterMessages,
+                                           StripComments,
+                                           StripClassesAndElements)
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  parser = Parser()
+  settings = get_default_settings(Parser)
+  settings.warning_stream = ""
+  settings.smart_quotes = fdp.ConsumeBool()
+  settings.trim_footnote_ref_space = fdp.ConsumeBool()
+  settings.report = fdp.ConsumeIntInRange(0, 5)
+
+  doc = new_document(fdp.ConsumeUnicodeNoSurrogates(64), settings.copy())
+  try:
+    parser.parse(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize), doc)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transforms([TestMessages])
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(SmartQuotes)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(Decorations)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(ExposeInternals)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(Messages)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(FilterMessages)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(StripComments)
+    if fdp.ConsumeBool():
+      doc.transformer.add_transform(StripClassesAndElements)
+    doc.transformer.apply_transforms()
+    o = doc.pformat()
+
+    visitor = nodes.TreeCopyVisitor(doc)
+    doc.walkabout(visitor)
+    newtree = visitor.get_tree_copy()
+  except ApplicationError:
+    pass
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()

projects/docutils/fuzz_table.py

@@ -0,0 +1,46 @@
+#!/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 docutils import ApplicationError
+from docutils.parsers.rst import tableparser
+from docutils.statemachine import StringList, string2lines
+
+
+def TestOneInput(data):
+  fdp = atheris.FuzzedDataProvider(data)
+  parser = tableparser.GridTableParser()
+  lines_input = StringList(
+      string2lines(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize)), 'fuzz data')
+  if len(lines_input) < 1:
+    return
+  parser.setup(lines_input)
+  try:
+    parser.find_head_body_sep()
+    parser.parse_table()
+  except ApplicationError:
+    pass
+
+
+def main():
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == "__main__":
+  main()