Add files using upload-large-folder tool

.gitattributes

@@ -274,3 +274,16 @@ local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parser
 local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDF_AdobeIllustrator.pdf filter=lfs diff=lfs merge=lfs -text
 local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDF_XFA_govdocs1_258578.pdf filter=lfs diff=lfs merge=lfs -text
 local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDF_deeplyEmbeddedAttachments.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDF_bad_page_303226.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDF_childAttachments.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testPDFFileEmbInAnnotation_noContents.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/test/resources/test-documents/testJournalParser.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-ml/tika-parser-nlp-module/src/test/resources/test-documents/testJournalParser.pdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/test.hdf filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/test.he5 filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/GLDAS_CLM10SUBP_3H.A19790202.0000.001.grb filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/egyl03.gdas.200811.00Z.grb2 filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/sresa1b_ncar_ccsm3_0_run1_200001.nc filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-extended/tika-parser-scientific-module/src/test/resources/test-documents/gdas1.forecmwf.2014062612.grib2 filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-code-module/src/test/resources/test-documents/test-columnar.sas7bdat filter=lfs diff=lfs merge=lfs -text
+local-test-tika-delta-02/afc-tika/tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-code-module/src/test/resources/test-documents/testLinux-ppc-32be filter=lfs diff=lfs merge=lfs -text

local-test-tika-delta-01/fuzz-tooling/infra/base-images/aixcc_build_all.sh

@@ -0,0 +1,59 @@
+#!/bin/bash -eux
+
+if [ "$1" = "--cache-from" ]; then
+    PULL_CACHE=1
+    shift
+    CACHE_TAG="${1//\//-}"  # s/\//-/g -> for branch names that contain slashes
+    shift
+elif [ "$1" = "--cache-to" ]; then
+    PUSH_CACHE=1
+    shift
+    CACHE_TAG="${1//\//-}"  # s/\//-/g -> for branch names that contain slashes
+    shift
+fi
+
+ARG_TAG="$1"
+shift
+
+BASE_IMAGES=(
+    "ghcr.io/aixcc-finals/base-image            infra/base-images/base-image"
+    "ghcr.io/aixcc-finals/base-clang            infra/base-images/base-clang"
+    "ghcr.io/aixcc-finals/base-builder          infra/base-images/base-builder"
+    "ghcr.io/aixcc-finals/base-builder-go       infra/base-images/base-builder-go"
+    "ghcr.io/aixcc-finals/base-builder-jvm      infra/base-images/base-builder-jvm"
+    "ghcr.io/aixcc-finals/base-builder-python   infra/base-images/base-builder-python"
+    "ghcr.io/aixcc-finals/base-builder-rust     infra/base-images/base-builder-rust"
+    "ghcr.io/aixcc-finals/base-builder-ruby     infra/base-images/base-builder-ruby"
+    "ghcr.io/aixcc-finals/base-builder-swift    infra/base-images/base-builder-swift"
+    "ghcr.io/aixcc-finals/base-runner           infra/base-images/base-runner"
+    "ghcr.io/aixcc-finals/base-runner-debug     infra/base-images/base-runner-debug"
+)
+
+for tuple in "${BASE_IMAGES[@]}"; do
+    read -r image path <<< "$tuple"
+
+    if [ "${PULL_CACHE+x}" ]; then
+
+        docker buildx build \
+            --build-arg IMG_TAG="${ARG_TAG}" \
+            --cache-from=type=registry,ref="${image}:${CACHE_TAG}" \
+            --tag "${image}:${ARG_TAG}" --push "$@" "${path}"
+
+    elif [ "${PUSH_CACHE+x}" ]; then
+
+        docker buildx build \
+            --build-arg IMG_TAG="${ARG_TAG}" \
+            --cache-from=type=registry,ref="${image}:${CACHE_TAG}" \
+            --cache-to=type=registry,ref="${image}:${CACHE_TAG}",mode=max \
+            --tag "${image}:${ARG_TAG}" --push "$@" "${path}"
+
+    else
+
+        docker buildx build \
+            --build-arg IMG_TAG="${ARG_TAG}" \
+            --tag "${image}:${ARG_TAG}" --push "$@" "${path}"
+
+    fi
+
+done
+

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/affected_fuzz_targets_test.py

@@ -0,0 +1,113 @@
+# Copyright 2021 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.
+"""Tests for affected_fuzz_targets.py"""
+import os
+import shutil
+import tempfile
+import unittest
+from unittest import mock
+
+import parameterized
+
+import affected_fuzz_targets
+import clusterfuzz_deployment
+import get_coverage
+import test_helpers
+import workspace_utils
+
+# pylint: disable=protected-access
+
+# NOTE: This integration test relies on
+# https://github.com/google/oss-fuzz/tree/master/projects/example project.
+EXAMPLE_PROJECT = 'example'
+
+EXAMPLE_FILE_CHANGED = 'test.txt'
+
+TEST_DATA_OUT_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                                  'test_data', 'build-out')
+
+
+class RemoveUnaffectedFuzzTargetsTest(unittest.TestCase):
+  """Tests remove_unaffected_fuzzers."""
+
+  TEST_FUZZER_1 = os.path.join(TEST_DATA_OUT_PATH, 'example_crash_fuzzer')
+  TEST_FUZZER_2 = os.path.join(TEST_DATA_OUT_PATH, 'example_nocrash_fuzzer')
+
+  # yapf: disable
+  @parameterized.parameterized.expand([
+      # Tests specific affected fuzzers are kept.
+      ([[EXAMPLE_FILE_CHANGED], None], 2,),
+
+      # Tests specific affected fuzzer is kept.
+      ([[EXAMPLE_FILE_CHANGED], ['not/a/real/file']], 1),
+
+      # Tests all fuzzers are kept if none are deemed affected.
+      ([None, None], 2),
+
+      # Tests that multiple fuzzers are kept if multiple fuzzers are affected.
+      ([[EXAMPLE_FILE_CHANGED], [EXAMPLE_FILE_CHANGED]], 2),
+      ])
+  # yapf: enable
+  def test_remove_unaffected_fuzz_targets(self, side_effect, expected_dir_len):
+    """Tests that remove_unaffected_fuzzers has the intended effect."""
+    config = test_helpers.create_run_config(
+        cfl_platform='github',
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        workspace='/workspace')
+    workspace = workspace_utils.Workspace(config)
+    deployment = clusterfuzz_deployment.get_clusterfuzz_deployment(
+        config, workspace)
+    # We can't use fakefs in this test because this test executes
+    # utils.is_fuzz_target_local. This function relies on the executable bit
+    # being set, which doesn't work properly in fakefs.
+    with tempfile.TemporaryDirectory() as tmp_dir, mock.patch(
+        'get_coverage.OSSFuzzCoverage.get_files_covered_by_target'
+    ) as mock_get_files:
+      with mock.patch('get_coverage._get_oss_fuzz_fuzzer_stats_dir_url',
+                      return_value=1):
+        mock_get_files.side_effect = side_effect
+        shutil.copy(self.TEST_FUZZER_1, tmp_dir)
+        shutil.copy(self.TEST_FUZZER_2, tmp_dir)
+
+        affected_fuzz_targets.remove_unaffected_fuzz_targets(
+            deployment, tmp_dir, [EXAMPLE_FILE_CHANGED], '')
+        self.assertEqual(expected_dir_len, len(os.listdir(tmp_dir)))
+
+
+class IsFuzzTargetAffectedTest(unittest.TestCase):
+  """Tests for is_fuzz_target_affected."""
+
+  def setUp(self):
+    self.fuzz_target_path = '/fuzz_target'
+
+  def test_relative_paths(self):
+    """Tests that is_fuzz_target_affected works as intended when the covered
+    files are relative paths."""
+    with mock.patch.object(
+        get_coverage.FilesystemCoverage,
+        'get_files_covered_by_target',
+    ) as get_files_covered_by_target:
+      get_files_covered_by_target.return_value = [
+          '/work/build/../../src/systemd/src/basic/alloc-util.c'
+      ]
+      coverage = get_coverage.FilesystemCoverage('/', '/')
+
+      self.assertTrue(
+          affected_fuzz_targets.is_fuzz_target_affected(
+              coverage, self.fuzz_target_path,
+              ['/src/systemd/src/basic/alloc-util.c']))
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/base_runner_utils.py

@@ -0,0 +1,33 @@
+# Copyright 2021 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.
+"""Utilities for scripts from ghcr.io/aixcc-finals/base-runner."""
+
+import os
+
+import config_utils
+
+
+def get_env(config, workspace):
+  """Returns a dictionary containing the current environment with additional env
+  vars set to values needed to run a fuzzer."""
+  env = os.environ.copy()
+  env['SANITIZER'] = config.sanitizer
+  env['FUZZING_LANGUAGE'] = config.language
+  env['OUT'] = workspace.out
+  env['CIFUZZ'] = 'True'
+  env['FUZZING_ENGINE'] = config_utils.DEFAULT_ENGINE
+  env['ARCHITECTURE'] = config.architecture
+  # Do this so we don't fail in tests.
+  env['FUZZER_ARGS'] = '-rss_limit_mb=2560 -timeout=25'
+  return env

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/build_fuzzers.py

@@ -0,0 +1,217 @@
+# Copyright 2020 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.
+"""Module used by CI tools in order to interact with fuzzers. This module helps
+CI tools to build fuzzers."""
+
+import logging
+import os
+import sys
+
+import affected_fuzz_targets
+import base_runner_utils
+import clusterfuzz_deployment
+import continuous_integration
+import docker
+import logs
+import workspace_utils
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import helper
+import utils
+
+logs.init()
+
+
+def check_project_src_path(project_src_path):
+  """Returns True if |project_src_path| exists."""
+  if not os.path.exists(project_src_path):
+    logging.error(
+        'PROJECT_SRC_PATH: %s does not exist. '
+        'Are you mounting it correctly?', project_src_path)
+    return False
+  return True
+
+
+# pylint: disable=too-many-arguments
+
+
+class Builder:  # pylint: disable=too-many-instance-attributes
+  """Class for fuzzer builders."""
+
+  def __init__(self, config, ci_system):
+    self.config = config
+    self.ci_system = ci_system
+    self.workspace = workspace_utils.Workspace(config)
+    self.workspace.initialize_dir(self.workspace.out)
+    self.workspace.initialize_dir(self.workspace.work)
+    self.clusterfuzz_deployment = (
+        clusterfuzz_deployment.get_clusterfuzz_deployment(
+            self.config, self.workspace))
+    self.image_repo_path = None
+    self.host_repo_path = None
+    self.repo_manager = None
+
+  def build_image_and_checkout_src(self):
+    """Builds the project builder image and checkout source code for the patch
+    we want to fuzz (if necessary). Returns True on success."""
+    result = self.ci_system.prepare_for_fuzzer_build()
+    if not result.success:
+      return False
+    self.image_repo_path = result.image_repo_path
+    self.repo_manager = result.repo_manager
+    if self.config.output_sarif:
+      self.workspace.make_repo_for_sarif(self.repo_manager)
+    logging.info('repo_dir: %s.', self.repo_manager.repo_dir)
+    self.host_repo_path = self.repo_manager.repo_dir
+    return True
+
+  def build_fuzzers(self):
+    """Moves the source code we want to fuzz into the project builder and builds
+    the fuzzers from that source code. Returns True on success."""
+    docker_args, docker_container = docker.get_base_docker_run_args(
+        self.workspace, self.config.sanitizer, self.config.language,
+        self.config.architecture, self.config.docker_in_docker)
+    if not docker_container:
+      docker_args.extend(
+          _get_docker_build_fuzzers_args_not_container(self.host_repo_path))
+
+    build_command = self.ci_system.get_build_command(self.host_repo_path,
+                                                     self.image_repo_path)
+
+    # Set extra environment variables so that they are visible to the build.
+    for key in self.config.extra_environment_variables:
+      # Don't specify their value in case they get echoed.
+      docker_args.extend(['-e', key])
+
+    docker_args.extend([
+        docker.get_project_image_name(self.config.oss_fuzz_project_name),
+        '/bin/bash',
+        '-c',
+        build_command,
+    ])
+    logging.info('Building with %s sanitizer.', self.config.sanitizer)
+
+    # TODO(metzman): Stop using helper.docker_run so we can get rid of
+    # docker.get_base_docker_run_args and merge its contents into
+    # docker.get_base_docker_run_command.
+    if not helper.docker_run(docker_args):
+      logging.error('Building fuzzers failed.')
+      return False
+
+    return True
+
+  def upload_build(self):
+    """Upload build."""
+    if self.config.upload_build:
+      self.clusterfuzz_deployment.upload_build(
+          self.repo_manager.get_current_commit())
+
+    return True
+
+  def check_fuzzer_build(self):
+    """Checks the fuzzer build. Returns True on success or if config specifies
+    to skip check."""
+    if not self.config.bad_build_check:
+      return True
+
+    return check_fuzzer_build(self.config)
+
+  def build(self):
+    """Builds the image, checkouts the source (if needed), builds the fuzzers
+    and then removes the unaffectted fuzzers. Returns True on success."""
+    methods = [
+        self.build_image_and_checkout_src,
+        self.build_fuzzers,
+        self.remove_unaffected_fuzz_targets,
+        self.upload_build,
+        self.check_fuzzer_build,
+    ]
+    for method in methods:
+      if not method():
+        return False
+    return True
+
+  def remove_unaffected_fuzz_targets(self):
+    """Removes the fuzzers unaffected by the patch."""
+    if self.config.keep_unaffected_fuzz_targets:
+      logging.info('Not removing unaffected fuzz targets.')
+      return True
+
+    logging.info('Removing unaffected fuzz targets.')
+    changed_files = self.ci_system.get_changed_code_under_test(
+        self.repo_manager)
+    affected_fuzz_targets.remove_unaffected_fuzz_targets(
+        self.clusterfuzz_deployment, self.workspace.out, changed_files,
+        self.image_repo_path)
+    return True
+
+
+def build_fuzzers(config):
+  """Builds all of the fuzzers for a specific OSS-Fuzz project.
+
+  Args:
+    config: The configuration object for building fuzzers.
+
+  Returns:
+    True if build succeeded.
+  """
+  # Do some quick validation.
+  if config.project_src_path and not check_project_src_path(
+      config.project_src_path):
+    return False
+
+  # Get the builder and then build the fuzzers.
+  ci_system = continuous_integration.get_ci(config)
+  logging.info('ci_system: %s.', ci_system)
+  builder = Builder(config, ci_system)
+  return builder.build()
+
+
+def check_fuzzer_build(config):
+  """Checks the integrity of the built fuzzers.
+
+  Args:
+    config: The config object.
+
+  Returns:
+    True if fuzzers pass OSS-Fuzz's build check.
+  """
+  workspace = workspace_utils.Workspace(config)
+  if not os.path.exists(workspace.out):
+    logging.error('Invalid out directory: %s.', workspace.out)
+    return False
+  if not os.listdir(workspace.out):
+    logging.error('No fuzzers found in out directory: %s.', workspace.out)
+    return False
+
+  env = base_runner_utils.get_env(config, workspace)
+  if config.allowed_broken_targets_percentage is not None:
+    env['ALLOWED_BROKEN_TARGETS_PERCENTAGE'] = (
+        config.allowed_broken_targets_percentage)
+
+  stdout, stderr, retcode = utils.execute('test_all.py', env=env)
+  print(f'Build check: stdout: {stdout}\nstderr: {stderr}')
+  if retcode == 0:
+    logging.info('Build check passed.')
+    return True
+  logging.error('Build check failed.')
+  return False
+
+
+def _get_docker_build_fuzzers_args_not_container(host_repo_path):
+  """Returns arguments to the docker build arguments that are needed to use
+  |host_repo_path| when the host of the OSS-Fuzz builder container is not
+  another container."""
+  return ['-v', f'{host_repo_path}:{host_repo_path}']

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/build_fuzzers_entrypoint.py

@@ -0,0 +1,60 @@
+# Copyright 2020 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.
+"""Builds a specific OSS-Fuzz project's fuzzers for CI tools."""
+import logging
+import sys
+
+import build_fuzzers
+import logs
+import config_utils
+
+# pylint: disable=c-extension-no-member
+# pylint gets confused because of the relative import of cifuzz.
+
+logs.init()
+
+
+def build_fuzzers_entrypoint():
+  """Builds OSS-Fuzz project's fuzzers for CI tools."""
+  config = config_utils.BuildFuzzersConfig()
+
+  if config.dry_run:
+    # Sets the default return code on error to success.
+    returncode = 0
+  else:
+    # The default return code when an error occurs.
+    returncode = 1
+
+  if not build_fuzzers.build_fuzzers(config):
+    logging.error('Error building fuzzers for (commit: %s, pr_ref: %s).',
+                  config.git_sha, config.pr_ref)
+    return returncode
+
+  return 0
+
+
+def main():
+  """Builds OSS-Fuzz project's fuzzers for CI tools.
+
+  Note: The resulting fuzz target binaries of this build are placed in
+  the directory: ${GITHUB_WORKSPACE}/out
+
+  Returns:
+    0 on success or nonzero on failure.
+  """
+  return build_fuzzers_entrypoint()
+
+
+if __name__ == '__main__':
+  sys.exit(main())

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/build_fuzzers_test.py

@@ -0,0 +1,403 @@
+# Copyright 2020 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.
+"""Tests the functionality of the cifuzz module."""
+import os
+import shutil
+import sys
+import tempfile
+import unittest
+from unittest import mock
+
+import parameterized
+
+# pylint: disable=wrong-import-position
+INFRA_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.append(INFRA_DIR)
+
+OSS_FUZZ_DIR = os.path.dirname(INFRA_DIR)
+
+import build_fuzzers
+import continuous_integration
+import repo_manager
+import test_helpers
+
+# NOTE: This integration test relies on
+# https://github.com/google/oss-fuzz/tree/master/projects/example project.
+EXAMPLE_PROJECT = 'example'
+
+# Location of data used for testing.
+TEST_DATA_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                              'test_data')
+
+# An example fuzzer that triggers an crash.
+# Binary is a copy of the example project's do_stuff_fuzzer and can be
+# generated by running "python3 infra/helper.py build_fuzzers example".
+EXAMPLE_CRASH_FUZZER = 'example_crash_fuzzer'
+
+# An example fuzzer that does not trigger a crash.
+# Binary is a modified version of example project's do_stuff_fuzzer. It is
+# created by removing the bug in my_api.cpp.
+EXAMPLE_NOCRASH_FUZZER = 'example_nocrash_fuzzer'
+
+# A fuzzer to be built in build_fuzzers integration tests.
+EXAMPLE_BUILD_FUZZER = 'do_stuff_fuzzer'
+
+# pylint: disable=no-self-use,protected-access,too-few-public-methods,unused-argument
+
+
+def docker_command_has_env_var_arg(command, env_var_arg):
+  """Returns True if a docker command has a specific env var argument."""
+  for idx, element in enumerate(command):
+    if idx == 0:
+      # We're looking for the variable which can't be the first argument.
+      continue
+
+    if element == env_var_arg and command[idx - 1] == '-e':
+      return True
+  return False
+
+
+class BuildFuzzersTest(unittest.TestCase):
+  """Unit tests for build_fuzzers."""
+
+  @mock.patch('build_specified_commit.detect_main_repo',
+              return_value=('example.com', '/path'))
+  @mock.patch('repo_manager._clone', return_value=None)
+  @mock.patch('continuous_integration.checkout_specified_commit')
+  @mock.patch('helper.docker_run', return_value=False)  # We want to quit early.
+  def test_cifuzz_env_var(self, mock_docker_run, _, __, ___):
+    """Tests that the CIFUZZ env var is set."""
+
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      build_fuzzers.build_fuzzers(
+          test_helpers.create_build_config(
+              oss_fuzz_project_name=EXAMPLE_PROJECT,
+              project_repo_name=EXAMPLE_PROJECT,
+              workspace=tmp_dir,
+              pr_ref='refs/pull/1757/merge'))
+
+      docker_run_command = mock_docker_run.call_args_list[0][0][0]
+
+    self.assertTrue(
+        docker_command_has_env_var_arg(docker_run_command, 'CIFUZZ=True'))
+
+  @mock.patch('build_specified_commit.detect_main_repo',
+              return_value=('example.com', '/path'))
+  @mock.patch('repo_manager._clone', return_value=None)
+  @mock.patch('continuous_integration.checkout_specified_commit')
+  @mock.patch('helper.docker_run', return_value=False)  # We want to quit early.
+  def test_extra_env_var(self, mock_docker_run, _, __, ___):
+    """Tests that the CIFUZZ env var is set."""
+
+    extra_env_var = 'CFL_EXTRA_TOKEN'
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      with mock.patch.dict(os.environ, {extra_env_var: 'BLAH'}):
+        build_fuzzers.build_fuzzers(
+            test_helpers.create_build_config(
+                oss_fuzz_project_name=EXAMPLE_PROJECT,
+                project_repo_name=EXAMPLE_PROJECT,
+                workspace=tmp_dir,
+                pr_ref='refs/pull/1757/merge'))
+
+    docker_run_command = mock_docker_run.call_args_list[0][0][0]
+    self.assertTrue(
+        docker_command_has_env_var_arg(docker_run_command, extra_env_var))
+
+
+class InternalGithubBuildTest(unittest.TestCase):
+  """Tests for building OSS-Fuzz projects on GitHub actions."""
+  PROJECT_REPO_NAME = 'myproject'
+  SANITIZER = 'address'
+  GIT_SHA = 'fake'
+  PR_REF = 'fake'
+
+  def _create_builder(self, tmp_dir, oss_fuzz_project_name='myproject'):
+    """Creates an InternalGithubBuilder and returns it."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=oss_fuzz_project_name,
+        project_repo_name=self.PROJECT_REPO_NAME,
+        workspace=tmp_dir,
+        sanitizer=self.SANITIZER,
+        git_sha=self.GIT_SHA,
+        pr_ref=self.PR_REF,
+        cfl_platform='github')
+    cfl_platform = continuous_integration.get_ci(config)
+    builder = build_fuzzers.Builder(config, cfl_platform)
+    builder.repo_manager = repo_manager.RepoManager('/fake')
+    return builder
+
+  @mock.patch('helper.docker_run', return_value=True)
+  @mock.patch('continuous_integration.checkout_specified_commit',
+              side_effect=None)
+  def test_correct_host_repo_path(self, _, __):
+    """Tests that the correct self.host_repo_path is set by
+    build_image_and_checkout_src. Specifically, we want the name of the
+    directory the repo is in to match the name used in the docker
+    image/container, so that it will replace the host's copy properly."""
+    image_repo_path = '/src/repo_dir'
+    with tempfile.TemporaryDirectory() as tmp_dir, mock.patch(
+        'build_specified_commit.detect_main_repo',
+        return_value=('inferred_url', image_repo_path)):
+      builder = self._create_builder(tmp_dir)
+      builder.build_image_and_checkout_src()
+
+    self.assertEqual(os.path.basename(builder.host_repo_path),
+                     os.path.basename(image_repo_path))
+
+  @mock.patch('clusterfuzz_deployment.ClusterFuzzLite.upload_build',
+              return_value=True)
+  def test_upload_build_disabled(self, mock_upload_build):
+    """Test upload build (disabled)."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      builder = self._create_builder(tmp_dir)
+      builder.upload_build()
+
+    mock_upload_build.assert_not_called()
+
+  @mock.patch('repo_manager.RepoManager.get_current_commit',
+              return_value='commit')
+  @mock.patch('clusterfuzz_deployment.ClusterFuzzLite.upload_build',
+              return_value=True)
+  def test_upload_build(self, mock_upload_build, mock_get_current_commit):
+    """Test upload build."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      builder = self._create_builder(tmp_dir, oss_fuzz_project_name='')
+      builder.config.upload_build = True
+      builder.upload_build()
+
+    mock_upload_build.assert_called_with('commit')
+
+
+@unittest.skipIf(not os.getenv('INTEGRATION_TESTS'),
+                 'INTEGRATION_TESTS=1 not set')
+class BuildFuzzersIntegrationTest(unittest.TestCase):
+  """Integration tests for build_fuzzers."""
+
+  def setUp(self):
+    self.temp_dir_ctx_manager = test_helpers.docker_temp_dir()
+    self.workspace = self.temp_dir_ctx_manager.__enter__()
+    self.out_dir = os.path.join(self.workspace, 'build-out')
+    test_helpers.patch_environ(self)
+
+    base_runner_path = os.path.join(INFRA_DIR, 'base-images', 'base-runner')
+    os.environ['PATH'] = os.environ['PATH'] + os.pathsep + base_runner_path
+
+  def tearDown(self):
+    self.temp_dir_ctx_manager.__exit__(None, None, None)
+
+  def test_external_github_project(self):
+    """Tests building fuzzers from an external project on Github."""
+    project_repo_name = 'external-project'
+    git_url = 'https://github.com/jonathanmetzman/cifuzz-external-example.git'
+    # This test is dependant on the state of
+    # github.com/jonathanmetzman/cifuzz-external-example.
+    config = test_helpers.create_build_config(
+        project_repo_name=project_repo_name,
+        workspace=self.workspace,
+        git_url=git_url,
+        git_sha='HEAD',
+        cfl_platform='github',
+        base_commit='HEAD^1')
+    self.assertTrue(build_fuzzers.build_fuzzers(config))
+    self.assertTrue(
+        os.path.exists(os.path.join(self.out_dir, EXAMPLE_BUILD_FUZZER)))
+
+  def test_external_generic_project(self):
+    """Tests building fuzzers from an external project not on Github."""
+    project_repo_name = 'cifuzz-external-example'
+    git_url = 'https://github.com/jonathanmetzman/cifuzz-external-example.git'
+    # This test is dependant on the state of
+    # github.com/jonathanmetzman/cifuzz-external-example.
+    manager = repo_manager.clone_repo_and_get_manager(
+        'https://github.com/jonathanmetzman/cifuzz-external-example',
+        self.workspace)
+    project_src_path = manager.repo_dir
+    config = test_helpers.create_build_config(
+        project_repo_name=project_repo_name,
+        workspace=self.workspace,
+        git_url=git_url,
+        filestore='no_filestore',
+        git_sha='HEAD',
+        project_src_path=project_src_path,
+        base_commit='HEAD^1')
+    self.assertTrue(build_fuzzers.build_fuzzers(config))
+    self.assertTrue(
+        os.path.exists(os.path.join(self.out_dir, EXAMPLE_BUILD_FUZZER)))
+
+  def test_valid_commit(self):
+    """Tests building fuzzers with valid inputs."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='oss-fuzz',
+        workspace=self.workspace,
+        git_sha='0b95fe1039ed7c38fea1f97078316bfc1030c523',
+        base_commit='da0746452433dc18bae699e355a9821285d863c8',
+        cfl_platform='github')
+    self.assertTrue(build_fuzzers.build_fuzzers(config))
+    self.assertTrue(
+        os.path.exists(os.path.join(self.out_dir, EXAMPLE_BUILD_FUZZER)))
+
+  def test_valid_pull_request(self):
+    """Tests building fuzzers with valid pull request."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='oss-fuzz',
+        workspace=self.workspace,
+        pr_ref='refs/pull/1757/merge',
+        base_ref='master',
+        cfl_platform='github')
+    self.assertTrue(build_fuzzers.build_fuzzers(config))
+    self.assertTrue(
+        os.path.exists(os.path.join(self.out_dir, EXAMPLE_BUILD_FUZZER)))
+
+  def test_invalid_pull_request(self):
+    """Tests building fuzzers with invalid pull request."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='oss-fuzz',
+        workspace=self.workspace,
+        pr_ref='ref-1/merge',
+        base_ref='master',
+        cfl_platform='github')
+    self.assertTrue(build_fuzzers.build_fuzzers(config))
+
+  def test_invalid_oss_fuzz_project_name(self):
+    """Tests building fuzzers with invalid project name."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name='not_a_valid_project',
+        project_repo_name='oss-fuzz',
+        workspace=self.workspace,
+        git_sha='0b95fe1039ed7c38fea1f97078316bfc1030c523')
+    self.assertFalse(build_fuzzers.build_fuzzers(config))
+
+  def test_invalid_repo_name(self):
+    """Tests building fuzzers with invalid repo name."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='not-real-repo',
+        workspace=self.workspace,
+        git_sha='0b95fe1039ed7c38fea1f97078316bfc1030c523')
+    self.assertFalse(build_fuzzers.build_fuzzers(config))
+
+  def test_invalid_git_sha(self):
+    """Tests building fuzzers with invalid commit SHA."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='oss-fuzz',
+        workspace=self.workspace,
+        git_sha='',
+        cfl_platform='github')
+    with self.assertRaises(AssertionError):
+      build_fuzzers.build_fuzzers(config)
+
+  def test_invalid_workspace(self):
+    """Tests building fuzzers with invalid workspace."""
+    config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        project_repo_name='oss-fuzz',
+        workspace=os.path.join(self.workspace, 'not', 'a', 'dir'),
+        git_sha='0b95fe1039ed7c38fea1f97078316bfc1030c523')
+    self.assertFalse(build_fuzzers.build_fuzzers(config))
+
+
+class CheckFuzzerBuildTest(unittest.TestCase):
+  """Tests the check_fuzzer_build function in the cifuzz module."""
+
+  SANITIZER = 'address'
+  LANGUAGE = 'c++'
+
+  def setUp(self):
+    self.temp_dir_obj = tempfile.TemporaryDirectory()
+    workspace_path = os.path.join(self.temp_dir_obj.name, 'workspace')
+    self.config = test_helpers.create_build_config(
+        oss_fuzz_project_name=EXAMPLE_PROJECT,
+        sanitizer=self.SANITIZER,
+        language=self.LANGUAGE,
+        workspace=workspace_path,
+        pr_ref='refs/pull/1757/merge')
+    self.workspace = test_helpers.create_workspace(workspace_path)
+    shutil.copytree(TEST_DATA_PATH, workspace_path)
+    test_helpers.patch_environ(self, runner=True)
+
+  def tearDown(self):
+    self.temp_dir_obj.cleanup()
+
+  def test_correct_fuzzer_build(self):
+    """Checks check_fuzzer_build function returns True for valid fuzzers."""
+    self.assertTrue(build_fuzzers.check_fuzzer_build(self.config))
+
+  def test_not_a_valid_path(self):
+    """Tests that False is returned when a nonexistent path is given."""
+    self.config.workspace = 'not/a/valid/path'
+    self.assertFalse(build_fuzzers.check_fuzzer_build(self.config))
+
+  def test_no_valid_fuzzers(self):
+    """Tests that False is returned when an empty directory is given."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      self.config.workspace = tmp_dir
+      os.mkdir(os.path.join(self.config.workspace, 'build-out'))
+      self.assertFalse(build_fuzzers.check_fuzzer_build(self.config))
+
+  @mock.patch('utils.execute', return_value=(None, None, 0))
+  def test_allow_broken_fuzz_targets_percentage(self, mock_execute):
+    """Tests that ALLOWED_BROKEN_TARGETS_PERCENTAGE is set when running
+    docker if passed to check_fuzzer_build."""
+    percentage = '0'
+    self.config.allowed_broken_targets_percentage = percentage
+    build_fuzzers.check_fuzzer_build(self.config)
+    self.assertEqual(
+        mock_execute.call_args[1]['env']['ALLOWED_BROKEN_TARGETS_PERCENTAGE'],
+        percentage)
+
+
+@unittest.skip('Test is too long to be run with presubmit.')
+class BuildSantizerIntegrationTest(unittest.TestCase):
+  """Integration tests for the build_fuzzers.
+    Note: This test relies on "curl" being an OSS-Fuzz project."""
+  PROJECT_NAME = 'curl'
+  PR_REF = 'fake_pr'
+
+  @classmethod
+  def _create_config(cls, tmp_dir, sanitizer):
+    return test_helpers.create_build_config(
+        oss_fuzz_project_name=cls.PROJECT_NAME,
+        project_repo_name=cls.PROJECT_NAME,
+        workspace=tmp_dir,
+        pr_ref=cls.PR_REF,
+        sanitizer=sanitizer)
+
+  @parameterized.parameterized.expand([('memory',), ('undefined',)])
+  def test_valid_project_curl(self, sanitizer):
+    """Tests that MSAN can be detected from project.yaml"""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      self.assertTrue(
+          build_fuzzers.build_fuzzers(self._create_config(tmp_dir, sanitizer)))
+
+
+class GetDockerBuildFuzzersArgsNotContainerTest(unittest.TestCase):
+  """Tests that _get_docker_build_fuzzers_args_not_container works as
+  intended."""
+
+  def test_get_docker_build_fuzzers_args_no_container(self):
+    """Tests that _get_docker_build_fuzzers_args_not_container works
+    as intended."""
+    host_repo_path = '/host/repo'
+    result = build_fuzzers._get_docker_build_fuzzers_args_not_container(
+        host_repo_path)
+    expected_result = ['-v', '/host/repo:/host/repo']
+    self.assertEqual(result, expected_result)
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/cifuzz-base/Dockerfile

@@ -0,0 +1,44 @@
+# Copyright 2020 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 ghcr.io/aixcc-finals/base-runner
+
+RUN apt-get update && \
+    apt-get install -y systemd && \
+    wget https://download.docker.com/linux/ubuntu/dists/focal/pool/stable/amd64/docker-ce-cli_20.10.8~3-0~ubuntu-focal_amd64.deb -O /tmp/docker-ce.deb && \
+    dpkg -i /tmp/docker-ce.deb && \
+    rm /tmp/docker-ce.deb
+
+ENV PATH=/opt/gcloud/google-cloud-sdk/bin/:$PATH
+ENV OSS_FUZZ_ROOT=/opt/oss-fuzz
+
+# Do this step before copying to make rebuilding faster when developing.
+COPY ./infra/cifuzz/requirements.txt /tmp/requirements.txt
+RUN python3 -m pip install -r /tmp/requirements.txt && rm /tmp/requirements.txt
+
+ADD . ${OSS_FUZZ_ROOT}
+# Don't use the default npm location since jazzer.js can break us.
+# This means javascript needed by cifuzz/clusterfuzzlite must be executed in
+# OSS_FUZZ_ROOT.
+RUN cd ${OSS_FUZZ_ROOT} && npm install ${OSS_FUZZ_ROOT}/infra/cifuzz
+
+
+ENV PYTHONUNBUFFERED=1
+
+# Python file to execute when the docker container starts up.
+# We can't use the env var $OSS_FUZZ_ROOT here. Since it's a constant env var,
+# just expand to '/opt/oss-fuzz'.
+ENTRYPOINT ["python3", "/opt/oss-fuzz/infra/cifuzz/cifuzz_combined_entrypoint.py"]

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/cifuzz_combined_entrypoint.py

@@ -0,0 +1,40 @@
+# Copyright 2021 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.
+"""Builds fuzzers and runs fuzzers. Entrypoint used for external users"""
+import logging
+import sys
+
+import build_fuzzers_entrypoint
+import run_fuzzers_entrypoint
+
+
+def main():
+  """Builds and runs fuzzers for CI tools.
+
+  NOTE: Any crash report will be in the filepath: $WORKSPACE/out/testcase
+  This can be used with GitHub's upload-artifact action to surface the logs.
+
+  Required environment variables:
+  Returns:
+    0 on success or 1 on failure.
+  """
+  logging.debug("Using cifuzz_combined_entrypoint.")
+  result = build_fuzzers_entrypoint.build_fuzzers_entrypoint()
+  if result != 0:
+    return result
+  return run_fuzzers_entrypoint.run_fuzzers_entrypoint()
+
+
+if __name__ == '__main__':
+  sys.exit(main())

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/cifuzz_end_to_end_test.py

@@ -0,0 +1,48 @@
+# Copyright 2021 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.
+"""End-to-End tests for CIFuzz."""
+import os
+import unittest
+
+import run_cifuzz
+import test_helpers
+
+CIFUZZ_DIR = os.path.dirname(os.path.abspath(__file__))
+EXTERNAL_PROJECT_PATH = os.path.join(CIFUZZ_DIR, 'test_data',
+                                     'external-project')
+
+
+# This test will fail if not run as root because the fuzzer build process
+# creates binaries that only root can write to.
+# Use a seperate env var to keep this seperate from integration tests which
+# don't have this annoying property.
+@unittest.skipIf(not os.getenv('END_TO_END_TESTS'),
+                 'END_TO_END_TESTS=1 not set')
+class EndToEndTest(unittest.TestCase):
+  """End-to-End tests for CIFuzz."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self, runner=True)
+
+  def test_simple(self):
+    """Simple end-to-end test using run_cifuzz.main()."""
+    os.environ['REPOSITORY'] = 'external-project'
+    os.environ['PROJECT_SRC_PATH'] = EXTERNAL_PROJECT_PATH
+    os.environ['FILESTORE'] = 'no_filestore'
+    os.environ['NO_CLUSTERFUZZ_DEPLOYMENT'] = 'True'
+
+    with test_helpers.docker_temp_dir() as temp_dir:
+      os.environ['WORKSPACE'] = temp_dir
+      # TODO(metzman): Verify the crash, affected fuzzers, and other things.
+      self.assertEqual(run_cifuzz.main(), 1)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/cloudbuild.yaml

@@ -0,0 +1,52 @@
+# TODO(metzman): Get rid of cifuzz-build-fuzzers and cifuzz-run-fuzzers.
+steps:
+- name: 'gcr.io/cloud-builders/docker'
+  args:
+  - build
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-base
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-base:v1
+  - '-f'
+  - infra/cifuzz/cifuzz-base/Dockerfile
+  - .
+- name: 'gcr.io/cloud-builders/docker'
+  args:
+  - build
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-build-fuzzers
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-build-fuzzers:v1
+  - '-t'
+  - ghcr.io/aixcc-finals/clusterfuzzlite-build-fuzzers
+  - '-t'
+  - ghcr.io/aixcc-finals/clusterfuzzlite-build-fuzzers:v1
+  - '-f'
+  - infra/build_fuzzers.Dockerfile
+  - infra
+- name: 'gcr.io/cloud-builders/docker'
+  args:
+  - build
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-run-fuzzers
+  - '-t'
+  - ghcr.io/aixcc-finals/cifuzz-run-fuzzers:v1
+  - '-t'
+  - ghcr.io/aixcc-finals/clusterfuzzlite-run-fuzzers
+  - '-t'
+  - ghcr.io/aixcc-finals/clusterfuzzlite-run-fuzzers:v1
+  - '-f'
+  - infra/run_fuzzers.Dockerfile
+  - infra
+images:
+- ghcr.io/aixcc-finals/cifuzz-base
+- ghcr.io/aixcc-finals/cifuzz-base:v1
+- ghcr.io/aixcc-finals/cifuzz-run-fuzzers
+- ghcr.io/aixcc-finals/cifuzz-run-fuzzers:v1
+- ghcr.io/aixcc-finals/cifuzz-build-fuzzers
+- ghcr.io/aixcc-finals/cifuzz-build-fuzzers:v1
+- ghcr.io/aixcc-finals/clusterfuzzlite-build-fuzzers
+- ghcr.io/aixcc-finals/clusterfuzzlite-build-fuzzers:v1
+- ghcr.io/aixcc-finals/clusterfuzzlite-run-fuzzers
+- ghcr.io/aixcc-finals/clusterfuzzlite-run-fuzzers:v1
+timeout: 1800s

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/clusterfuzz_deployment.py

@@ -0,0 +1,385 @@
+# Copyright 2021 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.
+"""Module for interacting with the ClusterFuzz deployment."""
+import logging
+import os
+import sys
+import urllib.error
+import urllib.request
+
+import config_utils
+import continuous_integration
+import filestore_utils
+import http_utils
+import get_coverage
+import repo_manager
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import utils
+
+
+class BaseClusterFuzzDeployment:
+  """Base class for ClusterFuzz deployments."""
+
+  def __init__(self, config, workspace):
+    self.config = config
+    self.workspace = workspace
+    self.ci_system = continuous_integration.get_ci(config)
+
+  def download_latest_build(self):
+    """Downloads the latest build from ClusterFuzz.
+
+    Returns:
+      A path to where the OSS-Fuzz build was stored, or None if it wasn't.
+    """
+    raise NotImplementedError('Child class must implement method.')
+
+  def upload_build(self, commit):
+    """Uploads the build with the given commit sha to the filestore."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def download_corpus(self, target_name, corpus_dir):
+    """Downloads the corpus for |target_name| from ClusterFuzz to |corpus_dir|.
+
+    Returns:
+      A path to where the OSS-Fuzz build was stored, or None if it wasn't.
+    """
+    raise NotImplementedError('Child class must implement method.')
+
+  def upload_crashes(self):
+    """Uploads crashes in |crashes_dir| to filestore."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def upload_corpus(self, target_name, corpus_dir, replace=False):  # pylint: disable=no-self-use,unused-argument
+    """Uploads the corpus for |target_name| to filestore."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def upload_coverage(self):
+    """Uploads the coverage report to the filestore."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def get_coverage(self, repo_path):
+    """Returns the project coverage object for the project."""
+    raise NotImplementedError('Child class must implement method.')
+
+
+def _make_empty_dir_if_nonexistent(path):
+  """Makes an empty directory at |path| if it does not exist."""
+  os.makedirs(path, exist_ok=True)
+
+
+class ClusterFuzzLite(BaseClusterFuzzDeployment):
+  """Class representing a deployment of ClusterFuzzLite."""
+
+  COVERAGE_NAME = 'latest'
+  LATEST_BUILD_WINDOW = 3
+
+  def __init__(self, config, workspace):
+    super().__init__(config, workspace)
+    self.filestore = filestore_utils.get_filestore(self.config)
+
+  def download_latest_build(self):
+    if os.path.exists(self.workspace.clusterfuzz_build):
+      # This path is necessary because download_latest_build can be called
+      # multiple times.That is the case because it is called only when we need
+      # to see if a bug is novel, i.e. until we want to check a bug is novel we
+      # don't want to waste time calling this, but therefore this method can be
+      # called if multiple bugs are found.
+      return self.workspace.clusterfuzz_build
+
+    repo_dir = self.ci_system.repo_dir
+    if not repo_dir:
+      raise RuntimeError('Repo checkout does not exist.')
+
+    _make_empty_dir_if_nonexistent(self.workspace.clusterfuzz_build)
+    repo = repo_manager.RepoManager(repo_dir)
+
+    diff_base = self.ci_system.get_diff_base()
+    if not diff_base:
+      diff_base = 'HEAD^'
+
+    # Builds are stored by commit, so try the latest |LATEST_BUILD_WINDOW|
+    # commits before the current diff base.
+    # TODO(ochang): If API usage becomes an issue, this can be optimized by the
+    # filestore accepting a list of filenames to try.
+    try:
+      # TODO(metzman): Why do we default to 'origin', we should avoid going down
+      # this path entirely and not need to catch an exception.
+      commit_list = repo.get_commit_list(diff_base,
+                                         limit=self.LATEST_BUILD_WINDOW)
+    except ValueError as error:
+      logging.error('Can\'t get commit list: %s', error)
+      return None
+
+    for old_commit in commit_list:
+      logging.info('Trying to downloading previous build %s.', old_commit)
+      build_name = self._get_build_name(old_commit)
+      try:
+        if self.filestore.download_build(build_name,
+                                         self.workspace.clusterfuzz_build):
+          logging.info('Done downloading previous build.')
+          return self.workspace.clusterfuzz_build
+
+        logging.info('Build for %s does not exist.', old_commit)
+      except Exception as err:  # pylint: disable=broad-except
+        logging.error('Could not download build for %s because of: %s',
+                      old_commit, err)
+
+    return None
+
+  def download_corpus(self, target_name, corpus_dir):
+    _make_empty_dir_if_nonexistent(corpus_dir)
+    logging.info('Downloading corpus for %s to %s.', target_name, corpus_dir)
+    corpus_name = self._get_corpus_name(target_name)
+    try:
+      self.filestore.download_corpus(corpus_name, corpus_dir)
+      logging.info('Done downloading corpus. Contains %d elements.',
+                   len(os.listdir(corpus_dir)))
+    except Exception as err:  # pylint: disable=broad-except
+      logging.error('Failed to download corpus for target: %s. Error: %s',
+                    target_name, str(err))
+    return corpus_dir
+
+  def _get_build_name(self, name):
+    return f'{self.config.sanitizer}-{name}'
+
+  def _get_corpus_name(self, target_name):  # pylint: disable=no-self-use
+    """Returns the name of the corpus artifact."""
+    return target_name
+
+  def upload_corpus(self, target_name, corpus_dir, replace=False):
+    """Upload the corpus produced by |target_name|."""
+    logging.info('Uploading corpus in %s for %s.', corpus_dir, target_name)
+    name = self._get_corpus_name(target_name)
+    try:
+      self.filestore.upload_corpus(name, corpus_dir, replace=replace)
+      logging.info('Done uploading corpus.')
+    except Exception as err:  # pylint: disable=broad-except
+      logging.error('Failed to upload corpus for target: %s. Error: %s.',
+                    target_name, err)
+
+  def upload_build(self, commit):
+    """Upload the build produced by CIFuzz as the latest build."""
+    logging.info('Uploading latest build in %s.', self.workspace.out)
+    build_name = self._get_build_name(commit)
+    try:
+      result = self.filestore.upload_build(build_name, self.workspace.out)
+      logging.info('Done uploading latest build.')
+      return result
+    except Exception as err:  # pylint: disable=broad-except
+      logging.error('Failed to upload latest build: %s. Error: %s',
+                    self.workspace.out, err)
+
+  def upload_crashes(self):
+    """Uploads crashes."""
+    artifact_dirs = os.listdir(self.workspace.artifacts)
+    if not artifact_dirs:
+      logging.info('No crashes in %s. Not uploading.', self.workspace.artifacts)
+      return
+
+    for crash_target in artifact_dirs:
+      artifact_dir = os.path.join(self.workspace.artifacts, crash_target)
+      if not os.path.isdir(artifact_dir):
+        logging.warning('%s is not an expected artifact directory, skipping.',
+                        crash_target)
+        continue
+
+      logging.info('Uploading crashes in %s.', artifact_dir)
+      try:
+        self.filestore.upload_crashes(crash_target, artifact_dir)
+        logging.info('Done uploading crashes.')
+      except Exception as err:  # pylint: disable=broad-except
+        logging.error('Failed to upload crashes. Error: %s', err)
+
+  def upload_coverage(self):
+    """Uploads the coverage report to the filestore."""
+    self.filestore.upload_coverage(self.COVERAGE_NAME,
+                                   self.workspace.coverage_report)
+
+  def get_coverage(self, repo_path):
+    """Returns the project coverage object for the project."""
+    _make_empty_dir_if_nonexistent(self.workspace.clusterfuzz_coverage)
+    try:
+      if not self.filestore.download_coverage(
+          self.COVERAGE_NAME, self.workspace.clusterfuzz_coverage):
+        logging.error('Could not download coverage.')
+        return None
+      return get_coverage.FilesystemCoverage(
+          repo_path, self.workspace.clusterfuzz_coverage)
+    except Exception as err:  # pylint: disable=broad-except
+      logging.error('Could not get coverage: %s.', err)
+      return None
+
+
+class OSSFuzz(BaseClusterFuzzDeployment):
+  """The OSS-Fuzz ClusterFuzz deployment."""
+
+  # Location of clusterfuzz builds on GCS.
+  CLUSTERFUZZ_BUILDS = 'clusterfuzz-builds'
+
+  # Zip file name containing the corpus.
+  CORPUS_ZIP_NAME = 'public.zip'
+
+  def get_latest_build_name(self):
+    """Gets the name of the latest OSS-Fuzz build of a project.
+
+    Returns:
+      A string with the latest build version or None.
+    """
+    version_file = (
+        f'{self.config.oss_fuzz_project_name}-{self.config.sanitizer}'
+        '-latest.version')
+    version_url = utils.url_join(utils.GCS_BASE_URL, self.CLUSTERFUZZ_BUILDS,
+                                 self.config.oss_fuzz_project_name,
+                                 version_file)
+    try:
+      response = urllib.request.urlopen(version_url)
+    except urllib.error.HTTPError:
+      logging.error('Error getting latest build version for %s from: %s.',
+                    self.config.oss_fuzz_project_name, version_url)
+      return None
+    return response.read().decode()
+
+  def download_latest_build(self):
+    """Downloads the latest OSS-Fuzz build from GCS.
+
+    Returns:
+      A path to where the OSS-Fuzz build was stored, or None if it wasn't.
+    """
+    if os.path.exists(self.workspace.clusterfuzz_build):
+      # This function can be called multiple times, don't download the build
+      # again.
+      return self.workspace.clusterfuzz_build
+
+    _make_empty_dir_if_nonexistent(self.workspace.clusterfuzz_build)
+
+    latest_build_name = self.get_latest_build_name()
+    if not latest_build_name:
+      return None
+
+    logging.info('Downloading latest build.')
+    oss_fuzz_build_url = utils.url_join(utils.GCS_BASE_URL,
+                                        self.CLUSTERFUZZ_BUILDS,
+                                        self.config.oss_fuzz_project_name,
+                                        latest_build_name)
+    if http_utils.download_and_unpack_zip(oss_fuzz_build_url,
+                                          self.workspace.clusterfuzz_build):
+      logging.info('Done downloading latest build.')
+      return self.workspace.clusterfuzz_build
+
+    return None
+
+  def upload_build(self, commit):  # pylint: disable=no-self-use
+    """Noop Implementation of upload_build."""
+    logging.info('Not uploading latest build because on OSS-Fuzz.')
+
+  def upload_corpus(self, target_name, corpus_dir, replace=False):  # pylint: disable=no-self-use,unused-argument
+    """Noop Implementation of upload_corpus."""
+    logging.info('Not uploading corpus because on OSS-Fuzz.')
+
+  def upload_crashes(self):  # pylint: disable=no-self-use
+    """Noop Implementation of upload_crashes."""
+    logging.info('Not uploading crashes because on OSS-Fuzz.')
+
+  def download_corpus(self, target_name, corpus_dir):
+    """Downloads the latest OSS-Fuzz corpus for the target.
+
+    Returns:
+      The local path to to corpus or None if download failed.
+    """
+    _make_empty_dir_if_nonexistent(corpus_dir)
+    project_qualified_fuzz_target_name = target_name
+    qualified_name_prefix = self.config.oss_fuzz_project_name + '_'
+    if not target_name.startswith(qualified_name_prefix):
+      project_qualified_fuzz_target_name = qualified_name_prefix + target_name
+
+    corpus_url = (f'{utils.GCS_BASE_URL}{self.config.oss_fuzz_project_name}'
+                  '-backup.clusterfuzz-external.appspot.com/corpus/'
+                  f'libFuzzer/{project_qualified_fuzz_target_name}/'
+                  f'{self.CORPUS_ZIP_NAME}')
+    logging.info('Downloading corpus from OSS-Fuzz: %s', corpus_url)
+
+    if not http_utils.download_and_unpack_zip(corpus_url, corpus_dir):
+      logging.warning('Failed to download corpus for %s.', target_name)
+    return corpus_dir
+
+  def upload_coverage(self):
+    """Noop Implementation of upload_coverage_report."""
+    logging.info('Not uploading coverage report because on OSS-Fuzz.')
+
+  def get_coverage(self, repo_path):
+    """Returns the project coverage object for the project."""
+    try:
+      return get_coverage.OSSFuzzCoverage(repo_path,
+                                          self.config.oss_fuzz_project_name)
+    except get_coverage.CoverageError:
+      return None
+
+
+class NoClusterFuzzDeployment(BaseClusterFuzzDeployment):
+  """ClusterFuzzDeployment implementation used when there is no deployment of
+  ClusterFuzz to use."""
+
+  def upload_build(self, commit):  # pylint: disable=no-self-use
+    """Noop Implementation of upload_build."""
+    logging.info('Not uploading latest build because no ClusterFuzz '
+                 'deployment.')
+
+  def upload_corpus(self, target_name, corpus_dir, replace=False):  # pylint: disable=no-self-use,unused-argument
+    """Noop Implementation of upload_corpus."""
+    logging.info('Not uploading corpus because no ClusterFuzz deployment.')
+
+  def upload_crashes(self):  # pylint: disable=no-self-use
+    """Noop Implementation of upload_crashes."""
+    logging.info('Not uploading crashes because no ClusterFuzz deployment.')
+
+  def download_corpus(self, target_name, corpus_dir):
+    """Noop Implementation of download_corpus."""
+    logging.info('Not downloading corpus because no ClusterFuzz deployment.')
+    return _make_empty_dir_if_nonexistent(corpus_dir)
+
+  def download_latest_build(self):  # pylint: disable=no-self-use
+    """Noop Implementation of download_latest_build."""
+    logging.info(
+        'Not downloading latest build because no ClusterFuzz deployment.')
+
+  def upload_coverage(self):
+    """Noop Implementation of upload_coverage."""
+    logging.info(
+        'Not uploading coverage report because no ClusterFuzz deployment.')
+
+  def get_coverage(self, repo_path):
+    """Noop Implementation of get_coverage."""
+    logging.info(
+        'Not getting project coverage because no ClusterFuzz deployment.')
+
+
+_PLATFORM_CLUSTERFUZZ_DEPLOYMENT_MAPPING = {
+    config_utils.BaseConfig.Platform.INTERNAL_GENERIC_CI: OSSFuzz,
+    config_utils.BaseConfig.Platform.INTERNAL_GITHUB: OSSFuzz,
+    config_utils.BaseConfig.Platform.EXTERNAL_GENERIC_CI: ClusterFuzzLite,
+    config_utils.BaseConfig.Platform.EXTERNAL_GITHUB: ClusterFuzzLite,
+}
+
+
+def get_clusterfuzz_deployment(config, workspace):
+  """Returns object reprsenting deployment of ClusterFuzz used by |config|."""
+  deployment_cls = _PLATFORM_CLUSTERFUZZ_DEPLOYMENT_MAPPING[config.platform]
+  if config.no_clusterfuzz_deployment:
+    logging.info('Overriding ClusterFuzzDeployment. Using None.')
+    deployment_cls = NoClusterFuzzDeployment
+  result = deployment_cls(config, workspace)
+  logging.info('ClusterFuzzDeployment: %s.', result)
+  return result

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/clusterfuzz_deployment_test.py

@@ -0,0 +1,268 @@
+# Copyright 2021 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.
+"""Tests for clusterfuzz_deployment.py"""
+
+import os
+import unittest
+from unittest import mock
+
+import parameterized
+from pyfakefs import fake_filesystem_unittest
+
+import clusterfuzz_deployment
+import config_utils
+import test_helpers
+import workspace_utils
+
+# NOTE: This integration test relies on
+# https://github.com/google/oss-fuzz/tree/master/projects/example project.
+EXAMPLE_PROJECT = 'example'
+
+# An example fuzzer that triggers an error.
+EXAMPLE_FUZZER = 'example_crash_fuzzer'
+
+WORKSPACE = '/workspace'
+EXPECTED_LATEST_BUILD_PATH = os.path.join(WORKSPACE, 'cifuzz-prev-build')
+
+# pylint: disable=unused-argument
+
+
+def _create_config(**kwargs):
+  """Creates a config object and then sets every attribute that is a key in
+  |kwargs| to the corresponding value. Asserts that each key in |kwargs| is an
+  attribute of Config."""
+  defaults = {
+      'cfl_platform': 'github',
+      'oss_fuzz_project_name': EXAMPLE_PROJECT,
+      'workspace': WORKSPACE,
+  }
+  for default_key, default_value in defaults.items():
+    if default_key not in kwargs:
+      kwargs[default_key] = default_value
+
+  return test_helpers.create_run_config(**kwargs)
+
+
+def _create_deployment(**kwargs):
+  config = _create_config(**kwargs)
+  workspace = workspace_utils.Workspace(config)
+  return clusterfuzz_deployment.get_clusterfuzz_deployment(config, workspace)
+
+
+class OSSFuzzTest(fake_filesystem_unittest.TestCase):
+  """Tests OSSFuzz."""
+
+  def setUp(self):
+    self.setUpPyfakefs()
+    self.deployment = _create_deployment()
+    self.corpus_dir = os.path.join(self.deployment.workspace.corpora,
+                                   EXAMPLE_FUZZER)
+
+  @mock.patch('http_utils.download_and_unpack_zip', return_value=True)
+  def test_download_corpus(self, mock_download_and_unpack_zip):
+    """Tests that we can download a corpus for a valid project."""
+    self.deployment.download_corpus(EXAMPLE_FUZZER, self.corpus_dir)
+    expected_url = ('https://storage.googleapis.com/example-backup.'
+                    'clusterfuzz-external.appspot.com/corpus/libFuzzer/'
+                    'example_crash_fuzzer/public.zip')
+    call_args, _ = mock_download_and_unpack_zip.call_args
+    self.assertEqual(call_args, (expected_url, self.corpus_dir))
+    self.assertTrue(os.path.exists(self.corpus_dir))
+
+  @mock.patch('http_utils.download_and_unpack_zip', return_value=False)
+  def test_download_corpus_fail(self, _):
+    """Tests that when downloading fails, an empty corpus directory is still
+    returned."""
+    self.deployment.download_corpus(EXAMPLE_FUZZER, self.corpus_dir)
+    self.assertEqual(os.listdir(self.corpus_dir), [])
+
+  def test_get_latest_build_name(self):
+    """Tests that the latest build name can be retrieved from GCS."""
+    latest_build_name = self.deployment.get_latest_build_name()
+    self.assertTrue(latest_build_name.endswith('.zip'))
+    self.assertTrue('address' in latest_build_name)
+
+  @parameterized.parameterized.expand([
+      ('upload_build', ('commit',),
+       'Not uploading latest build because on OSS-Fuzz.'),
+      ('upload_corpus', ('target', 'corpus-dir'),
+       'Not uploading corpus because on OSS-Fuzz.'),
+      ('upload_crashes', tuple(), 'Not uploading crashes because on OSS-Fuzz.'),
+  ])
+  def test_noop_methods(self, method, method_args, expected_message):
+    """Tests that certain methods are noops for OSS-Fuzz."""
+    with mock.patch('logging.info') as mock_info:
+      method = getattr(self.deployment, method)
+      self.assertIsNone(method(*method_args))
+      mock_info.assert_called_with(expected_message)
+
+  @mock.patch('http_utils.download_and_unpack_zip', return_value=True)
+  def test_download_latest_build(self, mock_download_and_unpack_zip):
+    """Tests that downloading the latest build works as intended under normal
+    circumstances."""
+    self.assertEqual(self.deployment.download_latest_build(),
+                     EXPECTED_LATEST_BUILD_PATH)
+    expected_url = ('https://storage.googleapis.com/clusterfuzz-builds/example/'
+                    'example-address-202008030600.zip')
+    mock_download_and_unpack_zip.assert_called_with(expected_url,
+                                                    EXPECTED_LATEST_BUILD_PATH)
+
+  @mock.patch('http_utils.download_and_unpack_zip', return_value=False)
+  def test_download_latest_build_fail(self, _):
+    """Tests that download_latest_build returns None when it fails to download a
+    build."""
+    self.assertIsNone(self.deployment.download_latest_build())
+
+
+class ClusterFuzzLiteTest(fake_filesystem_unittest.TestCase):
+  """Tests for ClusterFuzzLite."""
+
+  def setUp(self):
+    self.setUpPyfakefs()
+    self.deployment = _create_deployment(mode='batch',
+                                         oss_fuzz_project_name='',
+                                         cloud_bucket='gs://bucket')
+    self.corpus_dir = os.path.join(self.deployment.workspace.corpora,
+                                   EXAMPLE_FUZZER)
+
+  @mock.patch('filestore.github_actions.GithubActionsFilestore.download_corpus',
+              return_value=True)
+  def test_download_corpus(self, mock_download_corpus):
+    """Tests that download_corpus works for a valid project."""
+    self.deployment.download_corpus(EXAMPLE_FUZZER, self.corpus_dir)
+    mock_download_corpus.assert_called_with('example_crash_fuzzer',
+                                            self.corpus_dir)
+    self.assertTrue(os.path.exists(self.corpus_dir))
+
+  @mock.patch('filestore.github_actions.GithubActionsFilestore.download_corpus',
+              side_effect=Exception)
+  def test_download_corpus_fail(self, _):
+    """Tests that when downloading fails, an empty corpus directory is still
+    returned."""
+    self.deployment.download_corpus(EXAMPLE_FUZZER, self.corpus_dir)
+    self.assertEqual(os.listdir(self.corpus_dir), [])
+
+  @mock.patch('filestore.github_actions.GithubActionsFilestore.download_build',
+              side_effect=[False, True])
+  @mock.patch('repo_manager.RepoManager.get_commit_list',
+              return_value=['commit1', 'commit2'])
+  @mock.patch('continuous_integration.GithubCiMixin.repo_dir',
+              return_value='/path/to/repo')
+  def test_download_latest_build(self, mock_repo_dir, mock_get_commit_list,
+                                 mock_download_build):
+    """Tests that downloading the latest build works as intended under normal
+    circumstances."""
+    self.assertEqual(self.deployment.download_latest_build(),
+                     EXPECTED_LATEST_BUILD_PATH)
+    expected_artifact_name = 'address-commit2'
+    mock_download_build.assert_called_with(expected_artifact_name,
+                                           EXPECTED_LATEST_BUILD_PATH)
+
+  @mock.patch('filestore.github_actions.GithubActionsFilestore.download_build',
+              side_effect=Exception)
+  @mock.patch('repo_manager.RepoManager.get_commit_list',
+              return_value=['commit1', 'commit2'])
+  @mock.patch('continuous_integration.GithubCiMixin.repo_dir',
+              return_value='/path/to/repo')
+  def test_download_latest_build_fail(self, mock_repo_dir, mock_get_commit_list,
+                                      _):
+    """Tests that download_latest_build returns None when it fails to download a
+    build."""
+    self.assertIsNone(self.deployment.download_latest_build())
+
+  @mock.patch('filestore.github_actions.GithubActionsFilestore.upload_build')
+  def test_upload_build(self, mock_upload_build):
+    """Tests that upload_build works as intended."""
+    self.deployment.upload_build('commit')
+    mock_upload_build.assert_called_with('address-commit',
+                                         '/workspace/build-out')
+
+
+class NoClusterFuzzDeploymentTest(fake_filesystem_unittest.TestCase):
+  """Tests for NoClusterFuzzDeployment."""
+
+  def setUp(self):
+    self.setUpPyfakefs()
+    config = test_helpers.create_run_config(workspace=WORKSPACE,
+                                            cfl_platform='other',
+                                            filestore='no_filestore',
+                                            no_clusterfuzz_deployment=True)
+    workspace = workspace_utils.Workspace(config)
+    self.deployment = clusterfuzz_deployment.get_clusterfuzz_deployment(
+        config, workspace)
+
+    self.corpus_dir = os.path.join(workspace.corpora, EXAMPLE_FUZZER)
+
+  @mock.patch('logging.info')
+  def test_download_corpus(self, mock_info):
+    """Tests that download corpus returns the path to the empty corpus
+    directory."""
+    self.deployment.download_corpus(EXAMPLE_FUZZER, self.corpus_dir)
+    mock_info.assert_called_with(
+        'Not downloading corpus because no ClusterFuzz deployment.')
+    self.assertTrue(os.path.exists(self.corpus_dir))
+
+  @parameterized.parameterized.expand([
+      ('upload_build', ('commit',),
+       'Not uploading latest build because no ClusterFuzz deployment.'),
+      ('upload_corpus', ('target', 'corpus-dir'),
+       'Not uploading corpus because no ClusterFuzz deployment.'),
+      ('upload_crashes', tuple(),
+       'Not uploading crashes because no ClusterFuzz deployment.'),
+      ('download_latest_build', tuple(),
+       'Not downloading latest build because no ClusterFuzz deployment.')
+  ])
+  def test_noop_methods(self, method, method_args, expected_message):
+    """Tests that certain methods are noops for NoClusterFuzzDeployment."""
+    with mock.patch('logging.info') as mock_info:
+      method = getattr(self.deployment, method)
+      self.assertIsNone(method(*method_args))
+      mock_info.assert_called_with(expected_message)
+
+
+class GetClusterFuzzDeploymentTest(unittest.TestCase):
+  """Tests for get_clusterfuzz_deployment."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+    os.environ['GITHUB_REPOSITORY'] = 'owner/myproject'
+
+  @parameterized.parameterized.expand([
+      (config_utils.BaseConfig.Platform.INTERNAL_GENERIC_CI,
+       clusterfuzz_deployment.OSSFuzz),
+      (config_utils.BaseConfig.Platform.INTERNAL_GITHUB,
+       clusterfuzz_deployment.OSSFuzz),
+      (config_utils.BaseConfig.Platform.EXTERNAL_GENERIC_CI,
+       clusterfuzz_deployment.ClusterFuzzLite),
+      (config_utils.BaseConfig.Platform.EXTERNAL_GITHUB,
+       clusterfuzz_deployment.ClusterFuzzLite),
+  ])
+  def test_get_clusterfuzz_deployment(self, platform, expected_deployment_cls):
+    """Tests that get_clusterfuzz_deployment returns the correct value."""
+    with mock.patch('config_utils.BaseConfig.platform',
+                    return_value=platform,
+                    new_callable=mock.PropertyMock):
+      with mock.patch('filestore_utils.get_filestore', return_value=None):
+        with mock.patch('platform_config.github._get_event_data',
+                        return_value={}):
+          config = _create_config()
+          workspace = workspace_utils.Workspace(config)
+
+          self.assertIsInstance(
+              clusterfuzz_deployment.get_clusterfuzz_deployment(
+                  config, workspace), expected_deployment_cls)
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/config_utils.py

@@ -0,0 +1,283 @@
+# Copyright 2021 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.
+"""Module for getting the configuration CIFuzz needs to run."""
+
+import enum
+import importlib
+import logging
+import os
+import sys
+
+import environment
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+import platform_config
+import constants
+
+SANITIZERS = ['address', 'memory', 'undefined', 'coverage']
+
+# TODO(metzman): Set these on config objects so there's one source of truth.
+DEFAULT_ENGINE = 'libfuzzer'
+
+# This module deals a lot with env variables. Many of these will be set by users
+# and others beyond CIFuzz's control. Thus, you should be careful about using
+# the environment.py helpers for getting env vars, since it can cause values
+# that should be interpreted as strings to be returned as other types (bools or
+# ints for example). The environment.py helpers should not be used for values
+# that are supposed to be strings.
+
+
+def _get_sanitizer():
+  return os.getenv('SANITIZER', constants.DEFAULT_SANITIZER).lower()
+
+
+def _get_architecture():
+  return os.getenv('ARCHITECTURE', constants.DEFAULT_ARCHITECTURE).lower()
+
+
+def _is_dry_run():
+  """Returns True if configured to do a dry run."""
+  return environment.get_bool('DRY_RUN', False)
+
+
+def _get_language():
+  """Returns the project language."""
+  # Get language from environment. We took this approach because the convenience
+  # given to OSS-Fuzz users by not making them specify the language again (and
+  # getting it from the project.yaml) is outweighed by the complexity in
+  # implementing this. A lot of the complexity comes from our unittests not
+  # setting a proper projet at this point.
+  return os.getenv('LANGUAGE', constants.DEFAULT_LANGUAGE)
+
+
+def _get_extra_environment_variables():
+  """Gets extra environment variables specified by the user with
+  CFL_EXTRA_$NAME=$VALUE."""
+  return [key for key in os.environ if key.startswith('CFL_EXTRA_')]
+
+
+# pylint: disable=too-many-instance-attributes
+
+
+class ConfigError(Exception):
+  """Error for invalid configuration."""
+
+
+class BaseConfig:
+  """Object containing constant configuration for CIFuzz."""
+
+  class Platform(enum.Enum):
+    """Enum representing the different platforms CIFuzz runs on."""
+    EXTERNAL_GITHUB = 0  # Non-OSS-Fuzz on GitHub actions.
+    INTERNAL_GITHUB = 1  # OSS-Fuzz on GitHub actions.
+    INTERNAL_GENERIC_CI = 2  # OSS-Fuzz on any CI.
+    EXTERNAL_GENERIC_CI = 3  # Non-OSS-Fuzz on any CI.
+
+  @property
+  def is_github(self):
+    """Returns True if running on GitHub."""
+    return self.cfl_platform == 'github'
+
+  def __init__(self):
+    # Need to set these before calling self.platform.
+    self.oss_fuzz_project_name = os.getenv('OSS_FUZZ_PROJECT_NAME')
+    self.cfl_platform = os.getenv('CFL_PLATFORM')
+    logging.debug('Is github: %s.', self.is_github)
+
+    self.platform_conf = _get_platform_config(self.cfl_platform)
+    self.base_commit = self.platform_conf.base_commit
+    self.base_ref = self.platform_conf.base_ref
+    self.pr_ref = self.platform_conf.pr_ref
+    self.workspace = self.platform_conf.workspace
+    self.project_src_path = self.platform_conf.project_src_path
+    self.actor = self.platform_conf.actor
+    self.token = self.platform_conf.token
+    self.project_repo_owner = self.platform_conf.project_repo_owner
+    self.project_repo_name = self.platform_conf.project_repo_name
+    self.filestore = self.platform_conf.filestore
+
+    # This determines if builds are done using docker in docker
+    # rather than the normal method which is sibling containers.
+    self.docker_in_docker = self.platform_conf.docker_in_docker
+
+    self.dry_run = _is_dry_run()  # Check if failures should not be reported.
+    self.sanitizer = _get_sanitizer()
+    self.architecture = _get_architecture()
+    self.language = _get_language()
+    self.low_disk_space = environment.get_bool('LOW_DISK_SPACE', False)
+
+    self.git_store_repo = os.environ.get('GIT_STORE_REPO')
+    self.git_store_branch = os.environ.get('GIT_STORE_BRANCH')
+    self.git_store_branch_coverage = os.environ.get('GIT_STORE_BRANCH_COVERAGE',
+                                                    self.git_store_branch)
+    self.cloud_bucket = os.environ.get('CLOUD_BUCKET')
+    self.no_clusterfuzz_deployment = environment.get_bool(
+        'NO_CLUSTERFUZZ_DEPLOYMENT', False)
+    self.build_integration_path = (
+        constants.DEFAULT_EXTERNAL_BUILD_INTEGRATION_PATH)
+
+    self.parallel_fuzzing = environment.get_bool('PARALLEL_FUZZING', False)
+    self.extra_environment_variables = _get_extra_environment_variables()
+    self.output_sarif = environment.get_bool('OUTPUT_SARIF', False)
+
+    # TODO(metzman): Fix tests to create valid configurations and get rid of
+    # CIFUZZ_TEST here and in presubmit.py.
+    if not os.getenv('CIFUZZ_TEST') and not self.validate():
+      raise ConfigError('Invalid Configuration.')
+
+  def validate(self):
+    """Returns False if the configuration is invalid."""
+    # Do validation here so that unittests don't need to make a fully-valid
+    # config.
+    # pylint: disable=too-many-return-statements
+    if not self.workspace:
+      logging.error('Must set WORKSPACE.')
+      return False
+
+    if self.sanitizer not in SANITIZERS:
+      logging.error('Invalid SANITIZER: %s. Must be one of: %s.',
+                    self.sanitizer, SANITIZERS)
+      return False
+
+    if self.architecture not in constants.ARCHITECTURES:
+      logging.error('Invalid ARCHITECTURE: %s. Must be one of: %s.',
+                    self.architecture, constants.ARCHITECTURES)
+      return False
+
+    if self.architecture == 'i386' and self.sanitizer != 'address':
+      logging.error(
+          'ARCHITECTURE=i386 can be used with SANITIZER=address only.')
+      return False
+
+    if self.language not in constants.LANGUAGES:
+      logging.error('Invalid LANGUAGE: %s. Must be one of: %s.', self.language,
+                    constants.LANGUAGES)
+      return False
+
+    if not self.project_repo_name:
+      logging.error('Must set REPOSITORY.')
+      return False
+
+    return True
+
+  @property
+  def is_internal(self):
+    """Returns True if this is an OSS-Fuzz project."""
+    return bool(self.oss_fuzz_project_name)
+
+  @property
+  def platform(self):
+    """Returns the platform CIFuzz is runnning on."""
+    if not self.is_internal:
+      if not self.is_github:
+        return self.Platform.EXTERNAL_GENERIC_CI
+      return self.Platform.EXTERNAL_GITHUB
+
+    if self.is_github:
+      return self.Platform.INTERNAL_GITHUB
+    return self.Platform.INTERNAL_GENERIC_CI
+
+  @property
+  def is_coverage(self):
+    """Returns True if this CIFuzz run (building fuzzers and running them) for
+    generating a coverage report."""
+    return self.sanitizer == 'coverage'
+
+
+def _get_platform_config(cfl_platform):
+  """Returns the CI environment object for |cfl_platform|."""
+  module_name = f'platform_config.{cfl_platform}'
+  try:
+    cls = importlib.import_module(module_name).PlatformConfig
+  except ImportError:
+    cls = platform_config.BasePlatformConfig
+  return cls()
+
+
+class RunFuzzersConfig(BaseConfig):
+  """Class containing constant configuration for running fuzzers in CIFuzz."""
+
+  MODES = ['batch', 'code-change', 'coverage', 'prune']
+
+  def __init__(self):
+    super().__init__()
+    # TODO(metzman): Pick a better default for pruning.
+    self.fuzz_seconds = int(os.environ.get('FUZZ_SECONDS', 600))
+    self.mode = os.environ.get('MODE', 'code-change').lower()
+    if self.is_coverage:
+      self.mode = 'coverage'
+
+    self.report_unreproducible_crashes = environment.get_bool(
+        'REPORT_UNREPRODUCIBLE_CRASHES', False)
+
+    self.minimize_crashes = environment.get_bool('MINIMIZE_CRASHES', False)
+    if self.mode == 'batch':
+      logging.warning(
+          'Minimizing crashes reduces fuzzing time in batch fuzzing.')
+    self.report_timeouts = environment.get_bool('REPORT_TIMEOUTS', False)
+    self.report_ooms = environment.get_bool('REPORT_OOMS', True)
+    self.upload_all_crashes = environment.get_bool('UPLOAD_ALL_CRASHES', False)
+
+    # TODO(metzman): Fix tests to create valid configurations and get rid of
+    # CIFUZZ_TEST here and in presubmit.py.
+    if not os.getenv('CIFUZZ_TEST') and not self._run_config_validate():
+      raise ConfigError('Invalid Run Configuration.')
+
+  def _run_config_validate(self):
+    """Do extra validation on RunFuzzersConfig.__init__(). Do not name this
+    validate or else it will be called when using the parent's __init__ and will
+    fail. Returns True if valid."""
+    if self.mode not in self.MODES:
+      logging.error('Invalid MODE: %s. Must be one of %s.', self.mode,
+                    self.MODES)
+      return False
+
+    return True
+
+
+class BuildFuzzersConfig(BaseConfig):
+  """Class containing constant configuration for building fuzzers in CIFuzz."""
+
+  def __init__(self):
+    """Get the configuration from CIFuzz from the environment. These variables
+    are set by GitHub or the user."""
+    super().__init__()
+    self.git_sha = self.platform_conf.git_sha
+    self.git_url = self.platform_conf.git_url
+
+    self.allowed_broken_targets_percentage = os.getenv(
+        'ALLOWED_BROKEN_TARGETS_PERCENTAGE')
+    self.bad_build_check = environment.get_bool('BAD_BUILD_CHECK', True)
+
+    self.keep_unaffected_fuzz_targets = environment.get_bool(
+        'KEEP_UNAFFECTED_FUZZ_TARGETS')
+
+    self.upload_build = environment.get_bool('UPLOAD_BUILD', False)
+    if not self.keep_unaffected_fuzz_targets:
+      has_base_for_diff = (self.base_ref or self.base_commit)
+      if not has_base_for_diff:
+        logging.info(
+            'Keeping all fuzzers because there is nothing to diff against.')
+        self.keep_unaffected_fuzz_targets = True
+      elif self.upload_build:
+        logging.info('Keeping all fuzzers because we are uploading build.')
+        self.keep_unaffected_fuzz_targets = True
+      elif self.sanitizer == 'coverage':
+        logging.info('Keeping all fuzzers because we are doing coverage.')
+        self.keep_unaffected_fuzz_targets = True
+
+    if self.sanitizer == 'coverage':
+      self.bad_build_check = False

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/config_utils_test.py

@@ -0,0 +1,200 @@
+# Copyright 2021 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.
+"""Tests for config_utils."""
+import os
+import unittest
+from unittest import mock
+
+import config_utils
+import constants
+import test_helpers
+
+# pylint: disable=no-self-use,protected-access
+
+
+class BaseConfigTest(unittest.TestCase):
+  """Tests for BaseConfig."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+
+  def _create_config(self):
+    return config_utils.BuildFuzzersConfig()
+
+  def test_language_default(self):
+    """Tests that the correct default language is set."""
+    config = self._create_config()
+    self.assertEqual(config.language, 'c++')
+
+  def test_language(self):
+    """Tests that the correct language is set."""
+    language = 'python'
+    os.environ['LANGUAGE'] = language
+    config = self._create_config()
+    self.assertEqual(config.language, language)
+
+  def test_is_coverage(self):
+    """Tests that is_coverage is set correctly."""
+    # Test it is set when it is supposed to be.
+    os.environ['SANITIZER'] = 'coverage'
+    config = self._create_config()
+    self.assertTrue(config.is_coverage)
+
+    # Test it is not set when it is not supposed to be.
+    os.environ['SANITIZER'] = 'address'
+    config = self._create_config()
+    self.assertFalse(config.is_coverage)
+
+  @mock.patch('logging.error')
+  def test_validate_no_workspace(self, mock_error):
+    """Tests that validate returns False if GITHUB_WORKSPACE isn't set."""
+    os.environ['OSS_FUZZ_PROJECT_NAME'] = 'example'
+    config = self._create_config()
+    self.assertFalse(config.validate())
+    mock_error.assert_called_with('Must set WORKSPACE.')
+
+  @mock.patch('logging.error')
+  def test_validate_invalid_language(self, mock_error):
+    """Tests that validate returns False if GITHUB_WORKSPACE isn't set."""
+    os.environ['OSS_FUZZ_PROJECT_NAME'] = 'example'
+    os.environ['WORKSPACE'] = '/workspace'
+    os.environ['LANGUAGE'] = 'invalid-language'
+    config = self._create_config()
+    self.assertFalse(config.validate())
+    mock_error.assert_called_with('Invalid LANGUAGE: %s. Must be one of: %s.',
+                                  os.environ['LANGUAGE'], constants.LANGUAGES)
+
+  @mock.patch('logging.error')
+  def test_validate_invalid_sanitizer(self, mock_error):
+    """Tests that validate returns False if GITHUB_WORKSPACE isn't set."""
+    os.environ['OSS_FUZZ_PROJECT_NAME'] = 'example'
+    os.environ['WORKSPACE'] = '/workspace'
+    os.environ['SANITIZER'] = 'invalid-sanitizer'
+    config = self._create_config()
+    self.assertFalse(config.validate())
+    mock_error.assert_called_with('Invalid SANITIZER: %s. Must be one of: %s.',
+                                  os.environ['SANITIZER'],
+                                  config_utils.SANITIZERS)
+
+  def test_validate(self):
+    """Tests that validate returns True if config is valid."""
+    os.environ['OSS_FUZZ_PROJECT_NAME'] = 'example'
+    os.environ['WORKSPACE'] = '/workspace'
+    os.environ['REPOSITORY'] = 'repo'
+    config = self._create_config()
+    self.assertTrue(config.validate())
+
+
+class BuildFuzzersConfigTest(unittest.TestCase):
+  """Tests for BuildFuzzersConfig."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+
+  def _create_config(self):
+    return config_utils.BuildFuzzersConfig()
+
+  @mock.patch('platform_config.github._get_event_data', return_value={})
+  def test_github_base_ref(self, _):
+    """Tests that base_ref is set properly."""
+    expected_base_ref = 'expected_base_ref'
+    os.environ['GITHUB_BASE_REF'] = expected_base_ref
+    os.environ['CFL_PLATFORM'] = 'github'
+    os.environ['GITHUB_REPOSITORY'] = 'owner/repo'
+    config = self._create_config()
+    self.assertEqual(config.base_ref, expected_base_ref)
+
+  def test_base_ref(self):
+    """Tests that base_ref is set properly."""
+    expected_base_ref = 'expected_base_ref'
+    os.environ['GIT_BASE_REF'] = expected_base_ref
+    config = self._create_config()
+    self.assertEqual(config.base_ref, expected_base_ref)
+
+  def test_keep_unaffected_defaults_to_true(self):
+    """Tests that keep_unaffected_fuzz_targets defaults to true."""
+    config = self._create_config()
+    self.assertTrue(config.keep_unaffected_fuzz_targets)
+
+  def test_keep_unaffected_defaults_to_false_when_pr(self):
+    """Tests that keep_unaffected_fuzz_targets defaults to false when from a
+    pr."""
+    os.environ['GIT_BASE_REF'] = 'base-ref'
+    config = self._create_config()
+    self.assertFalse(config.keep_unaffected_fuzz_targets)
+
+
+class RunFuzzersConfigTest(unittest.TestCase):
+  """Tests for RunFuzzersConfig."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+
+  def _create_config(self):
+    return config_utils.RunFuzzersConfig()
+
+  def test_coverage(self):
+    """Tests that mode is overriden properly based on is_coverage."""
+    # Test that it is overriden when it is supposed to be.
+    os.environ['SANITIZER'] = 'coverage'
+    os.environ['MODE'] = 'code-change'
+    config = self._create_config()
+    self.assertEqual(config.mode, 'coverage')
+
+    # Test that it isn't overriden when it isn't supposed to be.
+    os.environ['SANITIZER'] = 'address'
+    mode = 'code-change'
+    os.environ['MODE'] = mode
+    config = self._create_config()
+    self.assertEqual(config.mode, mode)
+
+  def test_run_config_validate(self):
+    """Tests that _run_config_validate returns True when the config is valid."""
+    self.assertTrue(self._create_config()._run_config_validate())
+
+  @mock.patch('logging.error')
+  def test_run_config_invalid_mode(self, mock_error):
+    """Tests that _run_config_validate returns False when mode is invalid."""
+    fake_mode = 'fake-mode'
+    os.environ['MODE'] = fake_mode
+    self.assertFalse(self._create_config()._run_config_validate())
+    mock_error.assert_called_with('Invalid MODE: %s. Must be one of %s.',
+                                  fake_mode,
+                                  config_utils.RunFuzzersConfig.MODES)
+
+
+class GetSanitizerTest(unittest.TestCase):
+  """Tests for _get_sanitizer."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+    self.sanitizer = 'memory'
+
+  def test_default_value(self):
+    """Tests that the default value returned by _get_sanitizer is correct."""
+    self.assertEqual(config_utils._get_sanitizer(), 'address')
+
+  def test_normal_case(self):
+    """Tests that _get_sanitizer returns the correct value in normal cases."""
+    os.environ['SANITIZER'] = self.sanitizer
+    self.assertEqual(config_utils._get_sanitizer(), self.sanitizer)
+
+  def test_capitalization(self):
+    """Tests that that _get_sanitizer handles capitalization properly."""
+    os.environ['SANITIZER'] = self.sanitizer.upper()
+    self.assertEqual(config_utils._get_sanitizer(), self.sanitizer)
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/continuous_integration.py

@@ -0,0 +1,375 @@
+# Copyright 2021 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.
+"""Implementations for various CI systems."""
+
+import os
+import collections
+import sys
+import logging
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import build_specified_commit
+import docker
+import helper
+import repo_manager
+import retry
+import utils
+import workspace_utils
+
+# pylint: disable=too-few-public-methods
+
+BuildPreparationResult = collections.namedtuple(
+    'BuildPreparationResult', ['success', 'image_repo_path', 'repo_manager'])
+
+_IMAGE_BUILD_TRIES = 3
+_IMAGE_BUILD_BACKOFF = 2
+
+
+def fix_git_repo_for_diff(repo_manager_obj):
+  """Fixes git repos cloned by the "checkout" action so that diffing works on
+  them."""
+  command = [
+      'git', 'symbolic-ref', 'refs/remotes/origin/HEAD',
+      'refs/remotes/origin/master'
+  ]
+  return utils.execute(command, location=repo_manager_obj.repo_dir)
+
+
+class BaseCi:
+  """Class representing common CI functionality."""
+
+  def __init__(self, config):
+    self.config = config
+    self.workspace = workspace_utils.Workspace(config)
+    self._repo_dir = None
+
+  @property
+  def repo_dir(self):
+    """Returns the source repo path, if it has been checked out. None is
+    returned otherwise."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def prepare_for_fuzzer_build(self):
+    """Builds the fuzzer builder image and gets the source code we need to
+    fuzz."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def get_diff_base(self):
+    """Returns the base to diff against with git to get the change under
+    test."""
+    if self.config.base_ref:
+      logging.debug('Diffing against base_ref: %s.', self.config.base_ref)
+      return self.config.base_ref
+    if self.config.base_commit:
+      logging.debug('Diffing against base_commit: %s.', self.config.base_commit)
+      return self.config.base_commit
+    # TODO(metzman): Do we want this at all? What purpose does it serve? I guess
+    # it is a decent fallback when there is no base_commit or base_ref.
+    logging.debug('Diffing against origin.')
+    return 'origin'
+
+  def get_changed_code_under_test(self, repo_manager_obj):
+    """Returns the changed files that need to be tested."""
+    if self.config.base_ref:
+      repo_manager_obj.fetch_branch(self.config.base_ref)
+    fix_git_repo_for_diff(repo_manager_obj)
+    base = self.get_diff_base()
+    logging.info('Diffing against %s.', base)
+    # git diff <commit>... is equivalent to
+    # git diff $(git merge-base <commit> HEAD)
+    return repo_manager_obj.get_git_diff(base + '...')
+
+  def get_build_command(self, host_repo_path, image_repo_path):
+    """Returns the command for building the project that is run inside the
+    project builder container."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def _build_external_project_docker_image(self, manager):
+    """Helper for child classes that builds an external project's docker image.
+    Returns a BuildPreparationResult indicating failure or success."""
+    build_integration_abs_path = os.path.join(
+        manager.repo_dir, self.config.build_integration_path)
+    if not build_external_project_docker_image(manager.repo_dir,
+                                               build_integration_abs_path):
+      logging.error('Failed to build external project.')
+      return get_build_preparation_failure()
+    image_repo_path = os.path.join('/src', self.config.project_repo_name)
+    return BuildPreparationResult(success=True,
+                                  image_repo_path=image_repo_path,
+                                  repo_manager=manager)
+
+  def _make_repo_storage_dir(self):
+    os.makedirs(self.workspace.repo_storage, exist_ok=True)
+
+  def _clone_repo_and_checkout(self, repo_url, repo_name):
+    """Helper for child classes that clones the git repo specified by |repo_url|
+    to |repo_name|, checks out the specified commit, and returns the
+    |manager|."""
+    self._make_repo_storage_dir()
+    # Checkout project's repo in the shared volume.
+    manager = repo_manager.clone_repo_and_get_manager(
+        repo_url,
+        self.workspace.repo_storage,
+        repo_name=repo_name,
+        username=self.config.actor,
+        password=self.config.token)
+    self._checkout_specified_commit(manager)
+    return manager
+
+  def _checkout_specified_commit(self, manager):
+    checkout_specified_commit(manager, self.config.pr_ref, self.config.git_sha)
+
+  def _detect_main_repo(self):
+    """Helper for child classes that detects the main repo and returns a tuple
+    containing the inffered url and path to the repo in the image."""
+    inferred_url, image_repo_path = build_specified_commit.detect_main_repo(
+        self.config.oss_fuzz_project_name,
+        repo_name=self.config.project_repo_name)
+    if not inferred_url or not image_repo_path:
+      logging.error('Could not detect repo.')
+    return inferred_url, image_repo_path
+
+  def _create_repo_manager_for_project_src_path(self):
+    """Returns a repo manager for |project_src_path|."""
+    return repo_manager.RepoManager(self.config.project_src_path)
+
+
+def get_build_command():
+  """Returns the command to build the project inside the project builder
+  container."""
+  return 'compile'
+
+
+def get_replace_repo_and_build_command(host_repo_path, image_repo_path):
+  """Returns the command to replace the repo located at |image_repo_path| with
+  |host_repo_path| and build the project inside the project builder
+  container."""
+  rm_path = os.path.join(image_repo_path, '*')
+  image_src_path = os.path.dirname(image_repo_path)
+  build_command = get_build_command()
+  command = (f'cd / && rm -rf {rm_path} && cp -r {host_repo_path} '
+             f'{image_src_path} && cd - && {build_command}')
+  return command
+
+
+def get_ci(config):
+  """Determines what kind of CI is being used and returns the object
+  representing that system."""
+
+  if config.platform == config.Platform.EXTERNAL_GENERIC_CI:
+    # Non-OSS-Fuzz projects must bring their own source and their own build
+    # integration (which is relative to that source).
+    return ExternalGeneric(config)
+  if config.platform == config.Platform.EXTERNAL_GITHUB:
+    # Non-OSS-Fuzz projects must bring their own source and their own build
+    # integration (which is relative to that source).
+    return ExternalGithub(config)
+
+  if config.platform == config.Platform.INTERNAL_GENERIC_CI:
+    # Builds of OSS-Fuzz projects not hosted on Github must bring their own
+    # source since the checkout logic CIFuzz implements is github-specific.
+    # TODO(metzman): Consider moving Github-actions builds of OSS-Fuzz projects
+    # to this system to reduce implementation complexity.
+    return InternalGeneric(config)
+
+  return InternalGithub(config)
+
+
+def checkout_specified_commit(repo_manager_obj, pr_ref, git_sha):
+  """Checks out the specified commit or pull request using
+  |repo_manager_obj|."""
+  try:
+    if pr_ref:
+      repo_manager_obj.checkout_pr(pr_ref)
+    else:
+      repo_manager_obj.checkout_commit(git_sha)
+  except (RuntimeError, ValueError):
+    logging.error(
+        'Can not check out requested state %s. '
+        'Using current repo state.', pr_ref or git_sha)
+
+
+class GithubCiMixin:
+  """Mixin for Github based CI systems."""
+
+  def __init__(self, config):
+    super().__init__(config)
+    # Unlike in other classes, here _repo_dir is the parent directory of the
+    # repo, not its actual directory.
+    self._repo_dir = self.workspace.repo_storage
+
+  @property
+  def repo_dir(self):
+    """Returns the source repo path, if it has been checked out. None is
+    returned otherwise."""
+    if not os.path.exists(self._repo_dir):
+      logging.warning('Repo dir: %s does not exist.', self._repo_dir)
+      return None
+
+    # Note: this assumes there is only one repo checked out here.
+    listing = os.listdir(self._repo_dir)
+    if len(listing) != 1:
+      raise RuntimeError('Invalid repo directory.')
+
+    repo_path = os.path.join(self._repo_dir, listing[0])
+    if not os.path.isdir(repo_path):
+      raise RuntimeError('Repo is not a directory.')
+
+    return repo_path
+
+
+class InternalGithub(GithubCiMixin, BaseCi):
+  """Class representing CI for an OSS-Fuzz project on Github Actions."""
+
+  def _copy_repo_from_image(self, image_repo_path):
+    self._make_repo_storage_dir()
+    repo_name = os.path.basename(image_repo_path)
+    host_repo_path = os.path.join(self._repo_dir, repo_name)
+    bash_command = f'cp -r {image_repo_path} {host_repo_path}'
+    docker_args, _ = docker.get_base_docker_run_args(
+        self.workspace, self.config.sanitizer, self.config.language,
+        self.config.architecture, self.config.docker_in_docker)
+    docker_args.extend([
+        docker.get_project_image_name(self.config.oss_fuzz_project_name),
+        '/bin/bash', '-c', bash_command
+    ])
+    if not helper.docker_run(docker_args):
+      raise RuntimeError('Failed to copy repo.')
+    return repo_manager.RepoManager(host_repo_path)
+
+  def prepare_for_fuzzer_build(self):
+    """Builds the fuzzer builder image, checks out the pull request/commit and
+    returns the BuildPreparationResult."""
+    logging.info('InternalGithub: preparing for fuzzer build.')
+    assert self.config.pr_ref or self.config.git_sha
+    # _detect_main_repo builds the image as a side effect.
+    _, image_repo_path = self._detect_main_repo()
+    if not image_repo_path:
+      return get_build_preparation_failure()
+
+    # Use the same name used in the docker image so we can overwrite it.
+    manager = self._copy_repo_from_image(image_repo_path)
+    self._checkout_specified_commit(manager)
+    return BuildPreparationResult(success=True,
+                                  image_repo_path=image_repo_path,
+                                  repo_manager=manager)
+
+  def get_build_command(self, host_repo_path, image_repo_path):  # pylint: disable=no-self-use
+    """Returns the command for building the project that is run inside the
+    project builder container. Command also replaces |image_repo_path| with
+    |host_repo_path|."""
+    return get_replace_repo_and_build_command(host_repo_path, image_repo_path)
+
+
+def get_build_preparation_failure():
+  """Returns a BuildPreparationResult indicating failure."""
+  return BuildPreparationResult(success=False,
+                                image_repo_path=None,
+                                repo_manager=None)
+
+
+class InternalGeneric(BaseCi):
+  """Class representing CI for an OSS-Fuzz project on a CI other than Github
+  actions."""
+
+  def __init__(self, config):
+    super().__init__(config)
+    self._repo_dir = config.project_src_path
+
+  @property
+  def repo_dir(self):
+    """Returns the source repo path, if it has been checked out. None is
+    returned otherwise."""
+    return self._repo_dir
+
+  def prepare_for_fuzzer_build(self):
+    """Builds the project builder image for an OSS-Fuzz project outside of
+    GitHub actions. Returns the repo_manager. Does not checkout source code
+    since external projects are expected to bring their own source code to
+    CIFuzz."""
+    logging.info('InternalGeneric: preparing for fuzzer build.')
+    # detect_main_repo builds the image as a side effect.
+    _, image_repo_path = self._detect_main_repo()
+
+    if not image_repo_path:
+      return get_build_preparation_failure()
+
+    manager = self._create_repo_manager_for_project_src_path()
+    return BuildPreparationResult(success=True,
+                                  image_repo_path=image_repo_path,
+                                  repo_manager=manager)
+
+  def get_build_command(self, host_repo_path, image_repo_path):  # pylint: disable=no-self-use
+    """Returns the command for building the project that is run inside the
+    project builder container. Command also replaces |image_repo_path| with
+    |host_repo_path|."""
+    return get_replace_repo_and_build_command(host_repo_path, image_repo_path)
+
+
+@retry.wrap(_IMAGE_BUILD_TRIES, _IMAGE_BUILD_BACKOFF)
+def build_external_project_docker_image(project_src, build_integration_path):
+  """Builds the project builder image for an external (non-OSS-Fuzz) project.
+  Returns True on success."""
+  dockerfile_path = os.path.join(build_integration_path, 'Dockerfile')
+  command = [
+      '-t', docker.EXTERNAL_PROJECT_IMAGE, '-f', dockerfile_path, project_src
+  ]
+  return helper.docker_build(command)
+
+
+class ExternalGeneric(BaseCi):
+  """CI implementation for generic CI for external (non-OSS-Fuzz) projects."""
+
+  def __init__(self, config):
+    super().__init__(config)
+    self._repo_dir = config.project_src_path
+
+  @property
+  def repo_dir(self):
+    """Returns the source repo path, if it has been checked out. None is
+    returned otherwise."""
+    return self._repo_dir
+
+  def prepare_for_fuzzer_build(self):
+    logging.info('ExternalGeneric: preparing for fuzzer build.')
+    manager = self._create_repo_manager_for_project_src_path()
+    return self._build_external_project_docker_image(manager)
+
+  def get_build_command(self, host_repo_path, image_repo_path):  # pylint: disable=no-self-use
+    """Returns the command for building the project that is run inside the
+    project builder container."""
+    return get_build_command()
+
+
+class ExternalGithub(GithubCiMixin, BaseCi):
+  """Class representing CI for a non-OSS-Fuzz project on Github Actions."""
+
+  def prepare_for_fuzzer_build(self):
+    """Builds the project builder image for a non-OSS-Fuzz project on GitHub
+    actions. Sets the repo manager. Does not checkout source code since external
+    projects are expected to bring their own source code to CIFuzz. Returns True
+    on success."""
+    logging.info('ExternalGithub: preparing for fuzzer build.')
+    # Checkout before building, so we don't need to rely on copying the source
+    # from the image.
+    # TODO(metzman): Figure out if we want second copy at all.
+    manager = self._clone_repo_and_checkout(self.config.git_url,
+                                            self.config.project_repo_name)
+    return self._build_external_project_docker_image(manager)
+
+  def get_build_command(self, host_repo_path, image_repo_path):  # pylint: disable=no-self-use
+    """Returns the command for building the project that is run inside the
+    project builder container."""
+    return get_build_command()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/docker.py

@@ -0,0 +1,127 @@
+# Copyright 2021 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.
+"""Module for dealing with docker."""
+import logging
+import os
+import sys
+import uuid
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+import constants
+import utils
+import environment
+
+BASE_BUILDER_TAG = 'ghcr.io/aixcc-finals/base-builder'
+PROJECT_TAG_PREFIX = 'gcr.io/oss-fuzz/'
+
+# Default fuzz configuration.
+_DEFAULT_DOCKER_RUN_ARGS = [
+    '-e', 'FUZZING_ENGINE=' + constants.DEFAULT_ENGINE, '-e', 'CIFUZZ=True'
+]
+
+UNIQUE_ID_SUFFIX = '-' + uuid.uuid4().hex
+
+# TODO(metzman): Make run_fuzzers able to delete this image.
+EXTERNAL_PROJECT_IMAGE = 'external-cfl-project' + UNIQUE_ID_SUFFIX
+
+_DEFAULT_DOCKER_RUN_COMMAND = [
+    'docker',
+    'run',
+    '--rm',
+    '--privileged',
+]
+
+
+def get_docker_env_vars(env_mapping):
+  """Returns a list of docker arguments that sets each key in |env_mapping| as
+  an env var and the value of that key in |env_mapping| as the value."""
+  env_var_args = []
+  for env_var, env_var_val in env_mapping.items():
+    env_var_args.extend(['-e', f'{env_var}={env_var_val}'])
+  return env_var_args
+
+
+def get_project_image_name(project):
+  """Returns the name of the project builder image for |project_name|."""
+  # TODO(jonathanmetzman): We may need unique names to support parallel fuzzing
+  # for CIFuzz (like CFL supports). Don't do this for now because no one has
+  # asked for it and build_specified_commit would need to be modified to support
+  # this.
+  if project:
+    return PROJECT_TAG_PREFIX + project
+
+  return EXTERNAL_PROJECT_IMAGE
+
+
+def delete_images(images):
+  """Deletes |images|."""
+  command = ['docker', 'rmi', '-f'] + images
+  utils.execute(command)
+  utils.execute(['docker', 'builder', 'prune', '-f'])
+
+
+def get_base_docker_run_args(workspace,
+                             sanitizer=constants.DEFAULT_SANITIZER,
+                             language=constants.DEFAULT_LANGUAGE,
+                             architecture=constants.DEFAULT_ARCHITECTURE,
+                             docker_in_docker=False):
+  """Returns arguments that should be passed to every invocation of 'docker
+  run'."""
+  docker_args = _DEFAULT_DOCKER_RUN_ARGS.copy()
+  env_mapping = {
+      'SANITIZER': sanitizer,
+      'ARCHITECTURE': architecture,
+      'FUZZING_LANGUAGE': language,
+      'OUT': workspace.out
+  }
+  docker_args += get_docker_env_vars(env_mapping)
+  docker_container = environment.get('CFL_CONTAINER_ID',
+                                     utils.get_container_name())
+  logging.info('Docker container: %s.', docker_container)
+  if docker_container and not docker_in_docker:
+    # Don't map specific volumes if in a docker container, it breaks when
+    # running a sibling container.
+    docker_args += ['--volumes-from', docker_container]
+  else:
+    docker_args += _get_args_mapping_host_path_to_container(workspace.workspace)
+  return docker_args, docker_container
+
+
+def get_base_docker_run_command(workspace,
+                                sanitizer=constants.DEFAULT_SANITIZER,
+                                language=constants.DEFAULT_LANGUAGE,
+                                architecture=constants.DEFAULT_ARCHITECTURE,
+                                docker_in_docker=False):
+  """Returns part of the command that should be used everytime 'docker run' is
+  invoked."""
+  docker_args, docker_container = get_base_docker_run_args(
+      workspace,
+      sanitizer,
+      language,
+      architecture,
+      docker_in_docker=docker_in_docker)
+  command = _DEFAULT_DOCKER_RUN_COMMAND.copy() + docker_args
+  return command, docker_container
+
+
+def _get_args_mapping_host_path_to_container(host_path, container_path=None):
+  """Get arguments to docker run that will map |host_path| a path on the host to
+  a path in the container. If |container_path| is specified, that path is mapped
+  to. If not, then |host_path| is mapped to itself in the container."""
+  # WARNING: Do not use this function when running in production (and
+  # --volumes-from) is used for mapping volumes. It will break production.
+  container_path = host_path if container_path is None else container_path
+  return ['-v', f'{host_path}:{container_path}']

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/docker_test.py

@@ -0,0 +1,119 @@
+# Copyright 2021 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.
+"""Tests the functionality of the docker module."""
+import unittest
+from unittest import mock
+
+import docker
+import test_helpers
+import workspace_utils
+
+CONTAINER_NAME = 'example-container'
+config = test_helpers.create_run_config(oss_fuzz_project_name='project',
+                                        workspace='/workspace')
+config.workspace = '/workspace'
+WORKSPACE = workspace_utils.Workspace(config)
+SANITIZER = 'example-sanitizer'
+LANGUAGE = 'example-language'
+
+
+class GetProjectImageTest(unittest.TestCase):
+  """Tests for get_project_image."""
+
+  def test_get_project_image(self):
+    """Tests that get_project_image_name works as intended."""
+    project = 'my-project'
+    self.assertEqual(docker.get_project_image_name(project),
+                     'gcr.io/oss-fuzz/my-project')
+
+
+class GetDeleteImagesTest(unittest.TestCase):
+  """Tests for delete_images."""
+
+  @mock.patch('utils.execute')
+  def test_delete_images(self, mock_execute):  # pylint: disable=no-self-use
+    """Tests that get_project_image_name works as intended."""
+    images = ['image']
+    docker.delete_images(images)
+    expected_calls = [
+        mock.call(['docker', 'rmi', '-f'] + images),
+        mock.call(['docker', 'builder', 'prune', '-f'])
+    ]
+
+    mock_execute.assert_has_calls(expected_calls)
+
+
+class GetBaseDockerRunArgsTest(unittest.TestCase):
+  """Tests get_base_docker_run_args."""
+
+  @mock.patch('utils.get_container_name', return_value=CONTAINER_NAME)
+  def test_get_base_docker_run_args_container(self, _):
+    """Tests that get_base_docker_run_args works as intended when inside a
+    container."""
+    docker_args, docker_container = docker.get_base_docker_run_args(
+        WORKSPACE, SANITIZER, LANGUAGE)
+    self.assertEqual(docker_container, CONTAINER_NAME)
+    expected_docker_args = []
+    expected_docker_args = [
+        '-e',
+        'FUZZING_ENGINE=libfuzzer',
+        '-e',
+        'CIFUZZ=True',
+        '-e',
+        f'SANITIZER={SANITIZER}',
+        '-e',
+        'ARCHITECTURE=x86_64',
+        '-e',
+        f'FUZZING_LANGUAGE={LANGUAGE}',
+        '-e',
+        f'OUT={WORKSPACE.out}',
+        '--volumes-from',
+        CONTAINER_NAME,
+    ]
+    self.assertEqual(docker_args, expected_docker_args)
+
+  @mock.patch('utils.get_container_name', return_value=None)
+  def test_get_base_docker_run_args_no_container(self, _):
+    """Tests that get_base_docker_run_args works as intended when not inside a
+    container."""
+    docker_args, docker_container = docker.get_base_docker_run_args(
+        WORKSPACE, SANITIZER, LANGUAGE)
+    self.assertEqual(docker_container, None)
+    expected_docker_args = [
+        '-e', 'FUZZING_ENGINE=libfuzzer', '-e', 'CIFUZZ=True', '-e',
+        f'SANITIZER={SANITIZER}', '-e', 'ARCHITECTURE=x86_64', '-e',
+        f'FUZZING_LANGUAGE={LANGUAGE}', '-e', f'OUT={WORKSPACE.out}', '-v',
+        f'{WORKSPACE.workspace}:{WORKSPACE.workspace}'
+    ]
+    self.assertEqual(docker_args, expected_docker_args)
+
+
+class GetBaseDockerRunCommandTest(unittest.TestCase):
+  """Tests get_base_docker_run_args."""
+
+  @mock.patch('utils.get_container_name', return_value=None)
+  def test_get_base_docker_run_command_no_container(self, _):
+    """Tests that get_base_docker_run_args works as intended when not inside a
+    container."""
+    docker_args, docker_container = docker.get_base_docker_run_command(
+        WORKSPACE, SANITIZER, LANGUAGE)
+    self.assertEqual(docker_container, None)
+    expected_docker_command = [
+        'docker', 'run', '--rm', '--privileged', '-e',
+        'FUZZING_ENGINE=libfuzzer', '-e', 'CIFUZZ=True', '-e',
+        f'SANITIZER={SANITIZER}', '-e', 'ARCHITECTURE=x86_64', '-e',
+        f'FUZZING_LANGUAGE={LANGUAGE}', '-e', f'OUT={WORKSPACE.out}', '-v',
+        f'{WORKSPACE.workspace}:{WORKSPACE.workspace}'
+    ]
+    self.assertEqual(docker_args, expected_docker_command)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/environment.py

@@ -0,0 +1,51 @@
+# Copyright 2021 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.
+"""Module for dealing with env vars."""
+
+import ast
+import os
+
+
+def _eval_value(value_string):
+  """Returns evaluated value."""
+  try:
+    return ast.literal_eval(value_string)
+  except:  # pylint: disable=bare-except
+    # String fallback.
+    return value_string
+
+
+def get(env_var, default_value=None):
+  """Returns an environment variable value."""
+  value_string = os.getenv(env_var)
+  if value_string is None:
+    return default_value
+
+  return _eval_value(value_string)
+
+
+def get_bool(env_var, default_value=None):
+  """Returns a boolean environment variable value. This is needed because a lot
+  of CIFuzz users specified 'false' for dry-run. So we need to special case
+  this."""
+  value = get(env_var, default_value)
+  if not isinstance(value, str):
+    return bool(value)
+
+  lower_value = value.lower()
+  allowed_values = {'true', 'false'}
+  if lower_value not in allowed_values:
+    raise Exception(f'Bool env var {env_var} value {value} is invalid. '
+                    f'Must be one of {allowed_values}.')
+  return lower_value == 'true'

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/example_cifuzz.yml

@@ -0,0 +1,33 @@
+name: CIFuzz
+on: [pull_request]
+permissions: {}
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+    steps:
+    - name: Build Fuzzers
+      id: build
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'example'
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'example'
+        fuzz-seconds: 600
+        output-sarif: true
+    - name: Upload Crash
+      uses: actions/upload-artifact@v3
+      if: failure() && steps.build.outcome == 'success'
+      with:
+        name: artifacts
+        path: ./out/artifacts   
+    - name: Upload Sarif
+      if: always() && steps.build.outcome == 'success'
+      uses: github/codeql-action/upload-sarif@v2
+      with:
+        # Path to SARIF file relative to the root of the repository
+        sarif_file: cifuzz-sarif/results.sarif
+        checkout_path: cifuzz-sarif

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/filestore_utils.py

@@ -0,0 +1,48 @@
+# Copyright 2021 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.
+"""External filestore interface. Cannot be depended on by filestore code."""
+import filestore
+import filestore.filesystem
+import filestore.git
+import filestore.github_actions
+import filestore.gsutil
+import filestore.no_filestore
+import filestore.gitlab
+
+FILESTORE_MAPPING = {
+    'filesystem': filestore.filesystem.FilesystemFilestore,
+    'gsutil': filestore.gsutil.GSUtilFilestore,
+    'github-actions': filestore.github_actions.GithubActionsFilestore,
+    'git': filestore.git.GitFilestore,
+    # TODO(metzman): Change to "no-filestore"
+    'no_filestore': filestore.no_filestore.NoFilestore,
+    'gitlab': filestore.gitlab.GitlabFilestore,
+}
+
+
+def get_filestore(config):
+  """Returns the correct filestore object based on the platform in |config|.
+  Raises an exception if there is no correct filestore for the platform."""
+  if config.platform == config.Platform.EXTERNAL_GITHUB:
+    ci_filestore = filestore.github_actions.GithubActionsFilestore(config)
+    if not config.git_store_repo:
+      return ci_filestore
+
+    return filestore.git.GitFilestore(config, ci_filestore)
+
+  filestore_cls = FILESTORE_MAPPING.get(config.filestore)
+  if filestore_cls is None:
+    raise filestore.FilestoreError(
+        f'Filestore: {config.filestore} doesn\'t exist.')
+  return filestore_cls(config)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/filestore_utils_test.py

@@ -0,0 +1,50 @@
+# Copyright 2021 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.
+"""Tests for filestore_utils."""
+import unittest
+from unittest import mock
+
+import parameterized
+
+import platform_config
+import filestore
+from filestore import github_actions
+import filestore_utils
+import test_helpers
+
+
+class GetFilestoreTest(unittest.TestCase):
+  """Tests for get_filestore."""
+
+  @parameterized.parameterized.expand([
+      ({
+          'cfl_platform': 'github',
+      }, github_actions.GithubActionsFilestore),
+  ])
+  def test_get_filestore(self, config_kwargs, filestore_cls):
+    """Tests that get_filestore returns the right filestore given a certain
+    platform."""
+    run_config = test_helpers.create_run_config(**config_kwargs)
+    filestore_impl = filestore_utils.get_filestore(run_config)
+    self.assertIsInstance(filestore_impl, filestore_cls)
+
+  @mock.patch('config_utils.BaseConfig.platform', return_value='other')
+  @mock.patch('config_utils._get_platform_config',
+              return_value=platform_config.BasePlatformConfig())
+  def test_get_filestore_unsupported_platform(self, _, __):
+    """Tests that get_filestore exceptions given a platform it doesn't
+    support."""
+    run_config = test_helpers.create_run_config()
+    with self.assertRaises(filestore.FilestoreError):
+      filestore_utils.get_filestore(run_config)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/fuzz_target_test.py

@@ -0,0 +1,298 @@
+# Copyright 2020 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.
+"""Tests the functionality of the fuzz_target module."""
+
+import os
+import shutil
+import tempfile
+import unittest
+from unittest import mock
+
+import certifi
+# Importing this later causes import failures with pytest for some reason.
+# TODO(ochang): Figure out why.
+import parameterized
+import google.cloud.ndb  # pylint: disable=unused-import
+from pyfakefs import fake_filesystem_unittest
+from clusterfuzz.fuzz import engine
+
+import clusterfuzz_deployment
+import fuzz_target
+import test_helpers
+import workspace_utils
+
+# NOTE: This integration test relies on
+# https://github.com/google/oss-fuzz/tree/master/projects/example project.
+EXAMPLE_PROJECT = 'example'
+
+# An example fuzzer that triggers an error.
+EXAMPLE_FUZZER = 'example_crash_fuzzer'
+
+# Mock return values for engine_impl.reproduce.
+EXECUTE_SUCCESS_RESULT = engine.ReproduceResult([], 0, 0, '')
+EXECUTE_FAILURE_RESULT = engine.ReproduceResult([], 1, 0, '')
+
+TEST_DATA_PATH = os.path.join(os.path.dirname(__file__), 'test_data')
+
+
+def _create_config(**kwargs):
+  """Creates a config object and then sets every attribute that is a key in
+  |kwargs| to the corresponding value. Asserts that each key in |kwargs| is an
+  attribute of Config."""
+  defaults = {
+      'cfl_platform': 'github',
+      'oss_fuzz_project_name': EXAMPLE_PROJECT,
+      'workspace': '/workspace'
+  }
+  for default_key, default_value in defaults.items():
+    if default_key not in kwargs:
+      kwargs[default_key] = default_value
+
+  return test_helpers.create_run_config(**kwargs)
+
+
+def _create_deployment(**kwargs):
+  config = _create_config(**kwargs)
+  workspace = workspace_utils.Workspace(config)
+  return clusterfuzz_deployment.get_clusterfuzz_deployment(config, workspace)
+
+
+@mock.patch('utils.get_container_name', return_value='container')
+class IsReproducibleTest(fake_filesystem_unittest.TestCase):
+  """Tests the is_reproducible method in the fuzz_target.FuzzTarget class."""
+
+  def setUp(self):
+    """Sets up example fuzz target to test is_reproducible method."""
+    self.fuzz_target_name = 'fuzz-target'
+    deployment = _create_deployment()
+    self.config = deployment.config
+    self.workspace = deployment.workspace
+    self.fuzz_target_path = os.path.join(self.workspace.out,
+                                         self.fuzz_target_name)
+    self.setUpPyfakefs()
+    self.fs.create_file(self.fuzz_target_path)
+    self.testcase_path = '/testcase'
+    self.fs.create_file(self.testcase_path)
+
+    self.target = fuzz_target.FuzzTarget(self.fuzz_target_path,
+                                         fuzz_target.REPRODUCE_ATTEMPTS,
+                                         self.workspace, deployment,
+                                         deployment.config)
+
+    # ClusterFuzz requires ROOT_DIR.
+    root_dir = os.environ['ROOT_DIR']
+    test_helpers.patch_environ(self, empty=True)
+    os.environ['ROOT_DIR'] = root_dir
+
+  # There's an extremely bad issue that happens if this test is run: Other tests
+  # in this file fail in CI with stacktraces using referencing fakefs even if
+  # the tests do not use fakefs.
+  # TODO(metzman): Stop using fakefs.
+  @mock.patch('os.chmod')
+  @unittest.skip('Skip because of weird failures.')
+  def test_repro_timed_out(self, mock_chmod, mock_get_container_name):
+    """Tests that is_reproducible behaves correctly when reproduction times
+    out."""
+    del mock_get_container_name
+    del mock_chmod
+
+    with mock.patch(
+        'clusterfuzz._internal.bot.fuzzers.libFuzzer.engine.LibFuzzerEngine.'
+        'reproduce',
+        side_effect=TimeoutError):
+      self.assertFalse(
+          self.target.is_reproducible('/testcase', self.target.target_path, []))
+
+  def test_reproducible(self, _):
+    """Tests that is_reproducible returns True if crash is detected and that
+    is_reproducible uses the correct command to reproduce a crash."""
+    all_repro = [EXECUTE_FAILURE_RESULT] * fuzz_target.REPRODUCE_ATTEMPTS
+    with mock.patch('clusterfuzz.fuzz.get_engine') as mock_get_engine:
+      mock_get_engine().reproduce.side_effect = all_repro
+
+      result = self.target.is_reproducible(self.testcase_path,
+                                           self.fuzz_target_path, [])
+      mock_get_engine().reproduce.assert_called_once_with(
+          '/workspace/build-out/fuzz-target',
+          '/testcase',
+          arguments=[],
+          max_time=30)
+      self.assertTrue(result)
+      self.assertEqual(1, mock_get_engine().reproduce.call_count)
+
+  def test_flaky(self, _):
+    """Tests that is_reproducible returns True if crash is detected on the last
+    attempt."""
+    last_time_repro = [EXECUTE_SUCCESS_RESULT] * 9 + [EXECUTE_FAILURE_RESULT]
+    with mock.patch('clusterfuzz.fuzz.get_engine') as mock_get_engine:
+      mock_get_engine().reproduce.side_effect = last_time_repro
+      self.assertTrue(
+          self.target.is_reproducible(self.testcase_path, self.fuzz_target_path,
+                                      []))
+      self.assertEqual(fuzz_target.REPRODUCE_ATTEMPTS,
+                       mock_get_engine().reproduce.call_count)
+
+  def test_nonexistent_fuzzer(self, _):
+    """Tests that is_reproducible raises an error if it could not attempt
+    reproduction because the fuzzer doesn't exist."""
+    with self.assertRaises(fuzz_target.ReproduceError):
+      self.target.is_reproducible(self.testcase_path, '/non-existent-path', [])
+
+  def test_unreproducible(self, _):
+    """Tests that is_reproducible returns False for a crash that did not
+    reproduce."""
+    all_unrepro = [EXECUTE_SUCCESS_RESULT] * fuzz_target.REPRODUCE_ATTEMPTS
+    with mock.patch('clusterfuzz.fuzz.get_engine') as mock_get_engine:
+      mock_get_engine().reproduce.side_effect = all_unrepro
+      result = self.target.is_reproducible(self.testcase_path,
+                                           self.fuzz_target_path, [])
+      self.assertFalse(result)
+
+
+class IsCrashReportableTest(fake_filesystem_unittest.TestCase):
+  """Tests the is_crash_reportable method of FuzzTarget."""
+
+  def setUp(self):
+    """Sets up example fuzz target to test is_crash_reportable method."""
+    self.setUpPyfakefs()
+    self.fuzz_target_path = '/example/do_stuff_fuzzer'
+    deployment = _create_deployment()
+    self.target = fuzz_target.FuzzTarget(self.fuzz_target_path, 100,
+                                         deployment.workspace, deployment,
+                                         deployment.config)
+    self.oss_fuzz_build_path = '/oss-fuzz-build'
+    self.fs.create_file(self.fuzz_target_path)
+    self.oss_fuzz_target_path = os.path.join(
+        self.oss_fuzz_build_path, os.path.basename(self.fuzz_target_path))
+    self.fs.create_file(self.oss_fuzz_target_path)
+    self.testcase_path = '/testcase'
+    self.fs.create_file(self.testcase_path, contents='')
+
+    # Do this to prevent pyfakefs from messing with requests.
+    self.fs.add_real_directory(os.path.dirname(certifi.__file__))
+
+  @mock.patch('fuzz_target.FuzzTarget.is_reproducible',
+              side_effect=[True, False])
+  @mock.patch('logging.info')
+  def test_new_reproducible_crash(self, mock_info, _):
+    """Tests that a new reproducible crash returns True."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      self.target.out_dir = tmp_dir
+      self.assertTrue(self.target.is_crash_reportable(self.testcase_path, []))
+    mock_info.assert_called_with(
+        'The crash is not reproducible on previous build. '
+        'Code change (pr/commit) introduced crash.')
+
+  # yapf: disable
+  @parameterized.parameterized.expand([
+      # Reproducible on PR build, but also reproducible on OSS-Fuzz.
+      ([True, True],),
+
+      # Not reproducible on PR build, but somehow reproducible on OSS-Fuzz.
+      # Unlikely to happen in real world except if test is flaky.
+      ([False, True],),
+
+      # Not reproducible on PR build, and not reproducible on OSS-Fuzz.
+      ([False, False],),
+  ])
+  # yapf: enable
+  def test_invalid_crash(self, is_reproducible_retvals):
+    """Tests that a nonreportable crash causes the method to return False."""
+    with mock.patch('fuzz_target.FuzzTarget.is_reproducible',
+                    side_effect=is_reproducible_retvals):
+      with mock.patch('clusterfuzz_deployment.OSSFuzz.download_latest_build',
+                      return_value=self.oss_fuzz_build_path):
+        self.assertFalse(self.target.is_crash_reportable(
+            self.testcase_path, []))
+
+  @mock.patch('logging.info')
+  @mock.patch('fuzz_target.FuzzTarget.is_reproducible', return_value=[True])
+  def test_reproducible_no_oss_fuzz_target(self, _, mock_info):
+    """Tests that is_crash_reportable returns True when a crash reproduces on
+    the PR build but the target is not in the OSS-Fuzz build (usually because it
+    is new)."""
+    os.remove(self.oss_fuzz_target_path)
+
+    def is_reproducible_side_effect(testcase, target_path, reproduce_arguments):
+      del testcase
+      del reproduce_arguments
+      if os.path.dirname(target_path) == self.oss_fuzz_build_path:
+        raise fuzz_target.ReproduceError()
+      return True
+
+    with mock.patch(
+        'fuzz_target.FuzzTarget.is_reproducible',
+        side_effect=is_reproducible_side_effect) as mock_is_reproducible:
+      with mock.patch('clusterfuzz_deployment.OSSFuzz.download_latest_build',
+                      return_value=self.oss_fuzz_build_path):
+        self.assertTrue(self.target.is_crash_reportable(self.testcase_path, []))
+    mock_is_reproducible.assert_any_call(self.testcase_path,
+                                         self.oss_fuzz_target_path, [])
+    mock_info.assert_called_with(
+        'Could not run previous build of target to determine if this code '
+        'change (pr/commit) introduced crash. Assuming crash was newly '
+        'introduced.')
+
+
+class FuzzTest(fake_filesystem_unittest.TestCase):
+  """Fuzz test."""
+
+  def setUp(self):
+    """Sets up example fuzz target."""
+    self.setUpPyfakefs()
+    deployment = _create_deployment()
+    config = deployment.config
+    workspace = deployment.workspace
+    self.fuzz_target = fuzz_target.FuzzTarget('/path/fuzz-target', 10,
+                                              workspace, deployment, config)
+
+  def test_get_fuzz_target_artifact(self):
+    """Tests that get_fuzz_target_artifact works as intended."""
+    # pylint: disable=protected-access
+    fuzz_target_artifact = self.fuzz_target._target_artifact_path()
+    self.assertEqual('/workspace/out/artifacts/fuzz-target/address',
+                     fuzz_target_artifact)
+
+
+class TimeoutIntegrationTest(unittest.TestCase):
+  """Tests handling of fuzzer timeout (timeout crashes reported by
+  libFuzzer)."""
+  TIMEOUT_FUZZER_NAME = 'timeout_fuzzer'
+
+  @parameterized.parameterized.expand([(True, True), (False, False)])
+  def test_timeout_reported(self, report_timeouts, expect_crash):
+    """Tests that timeouts are not reported."""
+    with test_helpers.temp_dir_copy(TEST_DATA_PATH) as temp_dir:
+      fuzz_target_path = os.path.join(temp_dir, 'build-out',
+                                      self.TIMEOUT_FUZZER_NAME)
+      shutil.copy(os.path.join(temp_dir, self.TIMEOUT_FUZZER_NAME),
+                  fuzz_target_path)
+      deployment = _create_deployment(workspace=temp_dir,
+                                      report_timeouts=report_timeouts)
+      config = deployment.config
+      fuzz_target_obj = fuzz_target.FuzzTarget(fuzz_target_path,
+                                               fuzz_target.REPRODUCE_ATTEMPTS,
+                                               deployment.workspace, deployment,
+                                               config)
+      with mock.patch('clusterfuzz._internal.bot.fuzzers.libfuzzer.'
+                      'fix_timeout_argument_for_reproduction') as _:
+        with mock.patch(
+            'clusterfuzz._internal.bot.fuzzers.libFuzzer.fuzzer.get_arguments',
+            return_value=['-timeout=1', '-rss_limit_mb=2560']):
+          fuzz_result = fuzz_target_obj.fuzz()
+    self.assertEqual(bool(fuzz_result.testcase), expect_crash)
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/generate_coverage_report.py

@@ -0,0 +1,48 @@
+# Copyright 2021 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.
+"""Module for generating coverage reports."""
+import os
+
+import base_runner_utils
+import fuzz_target
+import utils
+
+
+def run_coverage_command(config, workspace):
+  """Runs the coverage command in base-runner to generate a coverage report."""
+  env = base_runner_utils.get_env(config, workspace)
+  env['HTTP_PORT'] = ''
+  env['COVERAGE_EXTRA_ARGS'] = ''
+  env['CORPUS_DIR'] = workspace.corpora
+  env['COVERAGE_OUTPUT_DIR'] = workspace.coverage_report
+  command = 'coverage'
+  return utils.execute(command, env=env)
+
+
+def download_corpora(fuzz_target_paths, clusterfuzz_deployment):
+  """Downloads corpora for fuzz targets in |fuzz_target_paths| using
+  |clusterfuzz_deployment| to download corpora from ClusterFuzz/OSS-Fuzz."""
+  for target_path in fuzz_target_paths:
+    target_name = os.path.basename(target_path)
+    corpus_dir = fuzz_target.get_fuzz_target_corpus_dir(
+        clusterfuzz_deployment.workspace, target_name)
+    clusterfuzz_deployment.download_corpus(target_name, corpus_dir)
+
+
+def generate_coverage_report(fuzz_target_paths, workspace,
+                             clusterfuzz_deployment, config):
+  """Generates a coverage report using Clang's source based coverage."""
+  download_corpora(fuzz_target_paths, clusterfuzz_deployment)
+  run_coverage_command(config, workspace)
+  clusterfuzz_deployment.upload_coverage()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/generate_coverage_report_test.py

@@ -0,0 +1,71 @@
+# Copyright 2021 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.
+"""Tests for generate_coverage_report."""
+
+import unittest
+from unittest import mock
+
+import generate_coverage_report
+import test_helpers
+
+OUT_DIR = '/outdir'
+PROJECT = 'example-project'
+SANITIZER = 'coverage'
+
+
+class TestRunCoverageCommand(unittest.TestCase):
+  """Tests run_coverage_command"""
+
+  def setUp(self):
+    test_helpers.patch_environ(self, empty=True)
+
+  @mock.patch('utils.execute')
+  def test_run_coverage_command(self, mock_execute):  # pylint: disable=no-self-use
+    """Tests that run_coverage_command works as intended."""
+    config = test_helpers.create_run_config(oss_fuzz_project_name=PROJECT,
+                                            sanitizer=SANITIZER)
+    workspace = test_helpers.create_workspace()
+    generate_coverage_report.run_coverage_command(config, workspace)
+    expected_command = 'coverage'
+    expected_env = {
+        'SANITIZER': config.sanitizer,
+        'FUZZING_LANGUAGE': config.language,
+        'OUT': workspace.out,
+        'CIFUZZ': 'True',
+        'FUZZING_ENGINE': 'libfuzzer',
+        'ARCHITECTURE': 'x86_64',
+        'FUZZER_ARGS': '-rss_limit_mb=2560 -timeout=25',
+        'HTTP_PORT': '',
+        'COVERAGE_EXTRA_ARGS': '',
+        'CORPUS_DIR': workspace.corpora,
+        'COVERAGE_OUTPUT_DIR': workspace.coverage_report
+    }
+    mock_execute.assert_called_with(expected_command, env=expected_env)
+
+
+class DownloadCorporaTest(unittest.TestCase):
+  """Tests for download_corpora."""
+
+  def test_download_corpora(self):  # pylint: disable=no-self-use
+    """Tests that download_corpora works as intended."""
+    clusterfuzz_deployment = mock.Mock()
+    clusterfuzz_deployment.workspace = test_helpers.create_workspace()
+    fuzz_target_paths = ['/path/to/fuzzer1', '/path/to/fuzzer2']
+    expected_calls = [
+        mock.call('fuzzer1', '/workspace/cifuzz-corpus/fuzzer1'),
+        mock.call('fuzzer2', '/workspace/cifuzz-corpus/fuzzer2')
+    ]
+    generate_coverage_report.download_corpora(fuzz_target_paths,
+                                              clusterfuzz_deployment)
+    clusterfuzz_deployment.download_corpus.assert_has_calls(expected_calls)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/get_coverage.py

@@ -0,0 +1,208 @@
+# Copyright 2021 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.
+"""Module for determining coverage of fuzz targets."""
+import json
+import logging
+import os
+import sys
+
+import http_utils
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import utils
+
+# The path to get OSS-Fuzz project's latest report json file.`
+OSS_FUZZ_LATEST_COVERAGE_INFO_PATH = 'oss-fuzz-coverage/latest_report_info/'
+
+
+# pylint: disable=too-few-public-methods
+class CoverageError(Exception):
+  """Exceptions for project coverage."""
+
+
+class BaseCoverage:
+  """Gets coverage data for a project."""
+
+  def __init__(self, repo_path):
+    self.repo_path = _normalize_repo_path(repo_path)
+
+  def get_files_covered_by_target(self, target):
+    """Returns a list of source files covered by the specific fuzz target.
+
+    Args:
+      target: The name of the fuzz target whose coverage is requested.
+
+    Returns:
+      A list of files that the fuzz target covers or None.
+    """
+    target_cov = self.get_target_coverage(target)
+    if not target_cov:
+      logging.info('No coverage available for %s.', target)
+      return None
+
+    coverage_per_file = get_coverage_per_file(target_cov)
+    if not coverage_per_file:
+      logging.info('No files found in coverage report.')
+      return None
+
+    affected_file_list = []
+    for file_cov in coverage_per_file:
+      norm_file_path = os.path.normpath(file_cov['filename'])
+      if not norm_file_path.startswith(self.repo_path):
+        # Exclude files outside of the main repo.
+        continue
+
+      if not is_file_covered(file_cov):
+        # Don't consider a file affected if code in it is never executed.
+        continue
+
+      # TODO(metzman): It's weird to me that we access file_cov['filename']
+      # again and not norm_file_path, figure out if this makes sense.
+      relative_path = utils.remove_prefix(file_cov['filename'], self.repo_path)
+      affected_file_list.append(relative_path)
+
+    return affected_file_list
+
+  def get_target_coverage(self, target):
+    """Get the coverage report for a specific fuzz target.
+
+    Args:
+      target: The name of the fuzz target whose coverage is requested.
+
+    Returns:
+      The target's coverage json dict or None on failure.
+    """
+    raise NotImplementedError('Child class must implement method.')
+
+
+class OSSFuzzCoverage(BaseCoverage):
+  """Gets coverage data for a project from OSS-Fuzz."""
+
+  def __init__(self, repo_path, oss_fuzz_project_name):
+    """Constructor for OSSFuzzCoverage."""
+    super().__init__(repo_path)
+    self.oss_fuzz_project_name = oss_fuzz_project_name
+    self.fuzzer_stats_url = _get_oss_fuzz_fuzzer_stats_dir_url(
+        self.oss_fuzz_project_name)
+    if self.fuzzer_stats_url is None:
+      raise CoverageError('Could not get latest coverage.')
+
+  def get_target_coverage(self, target):
+    """Get the coverage report for a specific fuzz target.
+
+    Args:
+      target: The name of the fuzz target whose coverage is requested.
+
+    Returns:
+      The target's coverage json dict or None on failure.
+    """
+    if not self.fuzzer_stats_url:
+      return None
+
+    target_url = utils.url_join(self.fuzzer_stats_url, target + '.json')
+    return http_utils.get_json_from_url(target_url)
+
+
+def _get_oss_fuzz_latest_cov_report_info(oss_fuzz_project_name):
+  """Gets and returns a dictionary containing the latest coverage report info
+  for |project|."""
+  latest_report_info_url = utils.url_join(utils.GCS_BASE_URL,
+                                          OSS_FUZZ_LATEST_COVERAGE_INFO_PATH,
+                                          oss_fuzz_project_name + '.json')
+  latest_cov_info = http_utils.get_json_from_url(latest_report_info_url)
+  if latest_cov_info is None:
+    logging.error('Could not get the coverage report json from url: %s.',
+                  latest_report_info_url)
+    return None
+  return latest_cov_info
+
+
+def _get_oss_fuzz_fuzzer_stats_dir_url(oss_fuzz_project_name):
+  """Gets latest coverage report info for a specific OSS-Fuzz project from
+  GCS.
+
+  Args:
+    oss_fuzz_project_name: The name of the project.
+
+  Returns:
+    The projects coverage report info in json dict or None on failure.
+  """
+  latest_cov_info = _get_oss_fuzz_latest_cov_report_info(oss_fuzz_project_name)
+
+  if not latest_cov_info:
+    return None
+
+  if 'fuzzer_stats_dir' not in latest_cov_info:
+    logging.error('fuzzer_stats_dir not in latest coverage info.')
+    return None
+
+  fuzzer_stats_dir_gs_url = latest_cov_info['fuzzer_stats_dir']
+  fuzzer_stats_dir_url = utils.gs_url_to_https(fuzzer_stats_dir_gs_url)
+  return fuzzer_stats_dir_url
+
+
+class FilesystemCoverage(BaseCoverage):
+  """Class that gets a project's coverage from the filesystem."""
+
+  def __init__(self, repo_path, project_coverage_dir):
+    super().__init__(repo_path)
+    self.project_coverage_dir = project_coverage_dir
+
+  def get_target_coverage(self, target):
+    """Get the coverage report for a specific fuzz target.
+
+    Args:
+      target: The name of the fuzz target whose coverage is requested.
+
+    Returns:
+      The target's coverage json dict or None on failure.
+    """
+    logging.info('Getting coverage for %s from filesystem.', target)
+    fuzzer_stats_json_path = os.path.join(self.project_coverage_dir,
+                                          'fuzzer_stats', target + '.json')
+    if not os.path.exists(fuzzer_stats_json_path):
+      logging.warning('%s does not exist.', fuzzer_stats_json_path)
+      return None
+
+    with open(fuzzer_stats_json_path) as fuzzer_stats_json_file_handle:
+      try:
+        return json.load(fuzzer_stats_json_file_handle)
+      except json.decoder.JSONDecodeError as err:
+        logging.error('Could not decode: %s. Error: %s.',
+                      fuzzer_stats_json_path, err)
+        return None
+
+
+def is_file_covered(file_cov):
+  """Returns whether the file is covered."""
+  return file_cov['summary']['regions']['covered']
+
+
+def get_coverage_per_file(target_cov):
+  """Returns the coverage per file within |target_cov|."""
+  try:
+    return target_cov['data'][0]['files']
+  except (IndexError, TypeError, KeyError):
+    logging.error('target_cov: %s is malformed.', target_cov)
+    return None
+
+
+def _normalize_repo_path(repo_path):
+  """Normalizes and returns |repo_path| to make sure cases like /src/curl and
+  /src/curl/ are both handled."""
+  repo_path = os.path.normpath(repo_path)
+  if not repo_path.endswith('/'):
+    repo_path += '/'
+  return repo_path

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/get_coverage_test.py

@@ -0,0 +1,253 @@
+# Copyright 2021 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.
+"""Tests for get_coverage.py"""
+import os
+import json
+import unittest
+from unittest import mock
+
+import parameterized
+from pyfakefs import fake_filesystem_unittest
+import pytest
+
+import get_coverage
+
+# pylint: disable=protected-access
+
+TEST_DATA_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                              'test_data')
+
+PROJECT_NAME = 'curl'
+REPO_PATH = '/src/curl'
+FUZZ_TARGET = 'curl_fuzzer'
+PROJECT_COV_JSON_FILENAME = 'example_curl_cov.json'
+FUZZ_TARGET_COV_JSON_FILENAME = 'example_curl_fuzzer_cov.json'
+INVALID_TARGET = 'not-a-fuzz-target'
+
+with open(os.path.join(TEST_DATA_PATH,
+                       PROJECT_COV_JSON_FILENAME),) as cov_file_handle:
+  PROJECT_COV_INFO = json.loads(cov_file_handle.read())
+
+
+class GetOssFuzzFuzzerStatsDirUrlTest(unittest.TestCase):
+  """Tests _get_oss_fuzz_fuzzer_stats_dir_url."""
+
+  @mock.patch('http_utils.get_json_from_url',
+              return_value={
+                  'fuzzer_stats_dir':
+                      'gs://oss-fuzz-coverage/systemd/fuzzer_stats/20210303'
+              })
+  def test_get_valid_project(self, mock_get_json_from_url):
+    """Tests that a project's coverage report can be downloaded and parsed.
+
+    NOTE: This test relies on the PROJECT_NAME repo's coverage report.
+    The "example" project was not used because it has no coverage reports.
+    """
+    result = get_coverage._get_oss_fuzz_fuzzer_stats_dir_url(PROJECT_NAME)
+    (url,), _ = mock_get_json_from_url.call_args
+    self.assertEqual(
+        'https://storage.googleapis.com/oss-fuzz-coverage/'
+        'latest_report_info/curl.json', url)
+
+    expected_result = (
+        'https://storage.googleapis.com/oss-fuzz-coverage/systemd/fuzzer_stats/'
+        '20210303')
+    self.assertEqual(result, expected_result)
+
+  def test_get_invalid_project(self):
+    """Tests that passing a bad project returns None."""
+    self.assertIsNone(
+        get_coverage._get_oss_fuzz_fuzzer_stats_dir_url('not-a-proj'))
+
+
+class OSSFuzzCoverageGetTargetCoverageTest(unittest.TestCase):
+  """Tests OSSFuzzCoverage.get_target_coverage."""
+
+  def setUp(self):
+    with mock.patch('get_coverage._get_oss_fuzz_latest_cov_report_info',
+                    return_value=PROJECT_COV_INFO):
+      self.oss_fuzz_coverage = get_coverage.OSSFuzzCoverage(
+          REPO_PATH, PROJECT_NAME)
+
+  @mock.patch('http_utils.get_json_from_url', return_value={})
+  def test_valid_target(self, mock_get_json_from_url):
+    """Tests that a target's coverage report can be downloaded and parsed."""
+    self.oss_fuzz_coverage.get_target_coverage(FUZZ_TARGET)
+    (url,), _ = mock_get_json_from_url.call_args
+    self.assertEqual(
+        'https://storage.googleapis.com/oss-fuzz-coverage/'
+        'curl/fuzzer_stats/20200226/curl_fuzzer.json', url)
+
+  def test_invalid_target(self):
+    """Tests that passing an invalid target coverage report returns None."""
+    self.assertIsNone(
+        self.oss_fuzz_coverage.get_target_coverage(INVALID_TARGET))
+
+  @mock.patch('get_coverage._get_oss_fuzz_latest_cov_report_info',
+              return_value=None)
+  def test_invalid_project_json(self, _):  # pylint: disable=no-self-use
+    """Tests an invalid project JSON results in None being returned."""
+    with pytest.raises(get_coverage.CoverageError):
+      get_coverage.OSSFuzzCoverage(REPO_PATH, PROJECT_NAME)
+
+
+def _get_expected_curl_covered_file_list():
+  """Returns the expected covered file list for
+  FUZZ_TARGET_COV_JSON_FILENAME."""
+  curl_files_list_path = os.path.join(TEST_DATA_PATH,
+                                      'example_curl_file_list.json')
+  with open(curl_files_list_path) as file_handle:
+    return json.loads(file_handle.read())
+
+
+def _get_example_curl_coverage():
+  """Returns the contents of the fuzzer stats JSON file for
+  FUZZ_TARGET_COV_JSON_FILENAME."""
+  with open(os.path.join(TEST_DATA_PATH,
+                         FUZZ_TARGET_COV_JSON_FILENAME)) as file_handle:
+    return json.loads(file_handle.read())
+
+
+class OSSFuzzCoverageGetFilesCoveredByTargetTest(unittest.TestCase):
+  """Tests OSSFuzzCoverage.get_files_covered_by_target."""
+
+  def setUp(self):
+    with mock.patch('get_coverage._get_oss_fuzz_latest_cov_report_info',
+                    return_value=PROJECT_COV_INFO):
+      self.oss_fuzz_coverage = get_coverage.OSSFuzzCoverage(
+          REPO_PATH, PROJECT_NAME)
+
+  @parameterized.parameterized.expand([({
+      'data': []
+  },), ({
+      'data': [[]]
+  },), ({
+      'data': [{}]
+  },)])
+  def test_malformed_cov_data(self, coverage_data):
+    """Tests that covered files can be retrieved from a coverage report."""
+    with mock.patch('get_coverage.OSSFuzzCoverage.get_target_coverage',
+                    return_value=coverage_data):
+      self.oss_fuzz_coverage.get_files_covered_by_target(FUZZ_TARGET)
+
+  def test_valid_target(self):
+    """Tests that covered files can be retrieved from a coverage report."""
+    fuzzer_cov_data = _get_example_curl_coverage()
+    with mock.patch('get_coverage.OSSFuzzCoverage.get_target_coverage',
+                    return_value=fuzzer_cov_data):
+      file_list = self.oss_fuzz_coverage.get_files_covered_by_target(
+          FUZZ_TARGET)
+
+    expected_file_list = _get_expected_curl_covered_file_list()
+    self.assertCountEqual(file_list, expected_file_list)
+
+  def test_invalid_target(self):
+    """Tests passing invalid fuzz target returns None."""
+    self.assertIsNone(
+        self.oss_fuzz_coverage.get_files_covered_by_target(INVALID_TARGET))
+
+
+class FilesystemCoverageGetFilesCoveredByTargetTest(
+    fake_filesystem_unittest.TestCase):
+  """Tests FilesystemCoverage.get_files_covered_by_target."""
+
+  def setUp(self):
+    _fuzzer_cov_data = _get_example_curl_coverage()
+    self._expected_file_list = _get_expected_curl_covered_file_list()
+    self.coverage_path = '/coverage'
+    self.filesystem_coverage = get_coverage.FilesystemCoverage(
+        REPO_PATH, self.coverage_path)
+    self.setUpPyfakefs()
+    self.fs.create_file(os.path.join(self.coverage_path, 'fuzzer_stats',
+                                     FUZZ_TARGET + '.json'),
+                        contents=json.dumps(_fuzzer_cov_data))
+
+  def test_valid_target(self):
+    """Tests that covered files can be retrieved from a coverage report."""
+    file_list = self.filesystem_coverage.get_files_covered_by_target(
+        FUZZ_TARGET)
+    self.assertCountEqual(file_list, self._expected_file_list)
+
+  def test_invalid_target(self):
+    """Tests passing invalid fuzz target returns None."""
+    self.assertIsNone(
+        self.filesystem_coverage.get_files_covered_by_target(INVALID_TARGET))
+
+
+class IsFileCoveredTest(unittest.TestCase):
+  """Tests for is_file_covered."""
+
+  def test_is_file_covered_covered(self):
+    """Tests that is_file_covered returns True for a covered file."""
+    file_coverage = {
+        'filename': '/src/systemd/src/basic/locale-util.c',
+        'summary': {
+            'regions': {
+                'count': 204,
+                'covered': 200,
+                'notcovered': 200,
+                'percent': 98.03
+            }
+        }
+    }
+    self.assertTrue(get_coverage.is_file_covered(file_coverage))
+
+  def test_is_file_covered_not_covered(self):
+    """Tests that is_file_covered returns False for a not covered file."""
+    file_coverage = {
+        'filename': '/src/systemd/src/basic/locale-util.c',
+        'summary': {
+            'regions': {
+                'count': 204,
+                'covered': 0,
+                'notcovered': 0,
+                'percent': 0
+            }
+        }
+    }
+    self.assertFalse(get_coverage.is_file_covered(file_coverage))
+
+
+class GetOssFuzzLatestCovReportInfo(unittest.TestCase):
+  """Tests that _get_oss_fuzz_latest_cov_report_info works as
+  intended."""
+
+  PROJECT = 'project'
+  LATEST_REPORT_INFO_URL = ('https://storage.googleapis.com/oss-fuzz-coverage/'
+                            'latest_report_info/project.json')
+
+  @mock.patch('logging.error')
+  @mock.patch('http_utils.get_json_from_url', return_value={'coverage': 1})
+  def test_get_oss_fuzz_latest_cov_report_info(self, mock_get_json_from_url,
+                                               mock_error):
+    """Tests that _get_oss_fuzz_latest_cov_report_info works as intended."""
+    result = get_coverage._get_oss_fuzz_latest_cov_report_info(self.PROJECT)
+    self.assertEqual(result, {'coverage': 1})
+    mock_error.assert_not_called()
+    mock_get_json_from_url.assert_called_with(self.LATEST_REPORT_INFO_URL)
+
+  @mock.patch('logging.error')
+  @mock.patch('http_utils.get_json_from_url', return_value=None)
+  def test_get_oss_fuzz_latest_cov_report_info_fail(self, _, mock_error):
+    """Tests that _get_oss_fuzz_latest_cov_report_info works as intended when we
+    can't get latest report info."""
+    result = get_coverage._get_oss_fuzz_latest_cov_report_info('project')
+    self.assertIsNone(result)
+    mock_error.assert_called_with(
+        'Could not get the coverage report json from url: %s.',
+        self.LATEST_REPORT_INFO_URL)
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/http_utils.py

@@ -0,0 +1,118 @@
+# Copyright 2021 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.
+"""Utility module for HTTP."""
+import json
+import logging
+import os
+import sys
+import tempfile
+import zipfile
+
+import requests
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import retry
+
+_DOWNLOAD_URL_RETRIES = 3
+_DOWNLOAD_URL_BACKOFF = 1
+_HTTP_REQUEST_TIMEOUT = 10
+
+
+def download_and_unpack_zip(url, extract_directory, headers=None):
+  """Downloads and unpacks a zip file from an HTTP URL.
+
+  Args:
+    url: A url to the zip file to be downloaded and unpacked.
+    extract_directory: The path where the zip file should be extracted to.
+    headers: (Optional) HTTP headers to send with the download request.
+
+  Returns:
+    True on success.
+  """
+  if headers is None:
+    headers = {}
+
+  if not os.path.exists(extract_directory):
+    logging.error('Extract directory: %s does not exist.', extract_directory)
+    return False
+
+  # Gives the temporary zip file a unique identifier in the case that
+  # that download_and_unpack_zip is done in parallel.
+  with tempfile.NamedTemporaryFile(suffix='.zip') as tmp_file:
+    if not download_url(url, tmp_file.name, headers=headers):
+      return False
+
+    try:
+      with zipfile.ZipFile(tmp_file.name, 'r') as zip_file:
+        zip_file.extractall(extract_directory)
+    except zipfile.BadZipFile:
+      logging.error('Error unpacking zip from %s. Bad Zipfile.', url)
+      return False
+
+  return True
+
+
+def download_url(*args, **kwargs):
+  """Wrapper around _download_url that returns False if _download_url
+  exceptions."""
+  try:
+    return _download_url(*args, **kwargs)
+  except Exception:  # pylint: disable=broad-except
+    return False
+
+
+def get_json_from_url(url):
+  """Gets a json object from a specified HTTP URL.
+
+  Args:
+    url: The url of the json to be downloaded.
+
+  Returns:
+    A dictionary deserialized from JSON or None on failure.
+  """
+  try:
+    return requests.get(url, timeout=_HTTP_REQUEST_TIMEOUT).json()
+  except (ValueError, TypeError, json.JSONDecodeError,
+          requests.exceptions.ReadTimeout) as err:
+    logging.error('Loading json from url %s failed with: %s.', url, str(err))
+    return None
+
+
+@retry.wrap(_DOWNLOAD_URL_RETRIES, _DOWNLOAD_URL_BACKOFF)
+def _download_url(url, filename, headers=None):
+  """Downloads the file located at |url|, using HTTP to |filename|.
+
+  Args:
+    url: A url to a file to download.
+    filename: The path the file should be downloaded to.
+    headers: (Optional) HTTP headers to send with the download request.
+
+  Returns:
+    True on success.
+  """
+  if headers is None:
+    headers = {}
+
+  response = requests.get(url, headers=headers)
+
+  if response.status_code != 200:
+    logging.error('Unable to download from: %s. Code: %d. Content: %s.', url,
+                  response.status_code, response.content)
+    return False
+
+  with open(filename, 'wb') as file_handle:
+    file_handle.write(response.content)
+
+  return True

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/platform_config/github.py

@@ -0,0 +1,146 @@
+# Copyright 2021 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.
+"""Module for getting the configuration CIFuzz needs to run on Github."""
+import json
+import logging
+import os
+
+import platform_config
+
+
+def _get_github_event_path():
+  return os.getenv('GITHUB_EVENT_PATH')
+
+
+def _get_event_data():
+  """Returns the GitHub event data."""
+  github_event_path = _get_github_event_path()
+  with open(github_event_path, encoding='utf-8') as file_handle:
+    return json.load(file_handle)
+
+
+class PlatformConfig(platform_config.BasePlatformConfig):
+  """CI environment for GitHub."""
+
+  def __init__(self):
+    self._event_data = _get_event_data()
+    self._event = os.getenv('GITHUB_EVENT_NAME')
+
+  @property
+  def workspace(self):
+    """Returns the workspace."""
+    return os.getenv('GITHUB_WORKSPACE')
+
+  @property
+  def git_sha(self):
+    """Returns the Git SHA to checkout and fuzz. This is used only by GitHub
+    projects when commit fuzzing. It is not used when PR fuzzing. It is
+    definitely needed by OSS-Fuzz on GitHub since they have no copy of the repo
+    on the host and the repo on the builder image is a clone from main/master.
+    Right now it is needed by external on GitHub because we need to clone a new
+    repo because the copy they give us doesn't work for diffing.
+
+    TODO(metzman): Try to eliminate the need for this by 1. Making the clone
+    from external github projects usable. 2. Forcing OSS-Fuzz on Github to clone
+    before starting CIFuzz."""
+    return os.getenv('GITHUB_SHA')
+
+  @property
+  def actor(self):
+    """Name of the actor for the CI."""
+    return os.getenv('GITHUB_ACTOR')
+
+  @property
+  def token(self):
+    """Returns the CI API token."""
+    return os.getenv('GITHUB_TOKEN')
+
+  @property
+  def project_src_path(self):
+    """Returns the manually checked out path of the project's source if
+    specified or None. The path returned is relative to |self.workspace| since
+    on github the checkout will be relative to there."""
+    project_src_path = super().project_src_path
+    if project_src_path is None:
+      # Not set for internal GitHub users.
+      return project_src_path
+    # On GitHub (external users), this path is relative to |workspace|.
+    return os.path.join(self.workspace, project_src_path)
+
+  @property
+  def _project_repo_owner_and_name(self):
+    """Returns a tuple containing the project repo owner and the name of the
+    repo."""
+    # On GitHub this includes owner and repo name.
+    repository = os.getenv('GITHUB_REPOSITORY')
+    # Use os.path.split to split owner from repo.
+    return os.path.split(repository)
+
+  @property
+  def project_repo_owner(self):
+    """Returns the project repo owner (githubism)."""
+    return self._project_repo_owner_and_name[0]
+
+  @property
+  def project_repo_name(self):
+    """Returns the project repo name."""
+    return self._project_repo_owner_and_name[1]
+
+  @property
+  def git_url(self):
+    """Returns the repo URL. This is only used by GitHub users. Right now it is
+    needed by external on GitHub because we need to clone a new repo because the
+    copy they give us doesn't work for diffing. It isn't used by OSS-Fuzz on
+    github users since the Git URL is determined using repo detection.
+
+    TODO(metzman): Try to eliminate the need for this by making the clone
+    from external github projects usable.
+    TODO(metzman): As an easier goal, maybe make OSS-Fuzz GitHub use this too
+    for: 1. Consistency 2. Maybe it will allow use on forks."""
+    repository = os.getenv('GITHUB_REPOSITORY')
+    github_server_url = os.getenv('GITHUB_SERVER_URL', 'https://github.com')
+    # TODO(metzman): Probably need to change this to github.server_url.
+    return os.path.join(github_server_url, repository)
+
+  @property
+  def base_commit(self):
+    """Returns the base commit to diff against (commit fuzzing)."""
+    base_commit = None
+    if self._event == 'push':
+      base_commit = self._event_data['before']
+    logging.debug('base_commit: %s', base_commit)
+    return base_commit
+
+  @property
+  def pr_ref(self):
+    """Returns the pull request to checkout and fuzz. This is used only by
+    GitHub projects when PR fuzzing. It is not used when commit fuzzing. It is
+    definitely needed by OSS-Fuzz on GitHub since they have no copy of the repo
+    on the host and the repo on the builder image is a clone from main/master.
+    Right now it is needed by external on GitHub because we need to clone a new
+    repo because the copy they give us doesn't work for diffing.
+
+    TODO(metzman): Try to eliminate the need for this by 1. Making the clone
+    from external github projects usable. 2. Forcing OSS-Fuzz on Github to clone
+    before starting CIFuzz."""
+    if self._event == 'pull_request':
+      pr_ref = f'refs/pull/{self._event_data["pull_request"]["number"]}/merge'
+      logging.debug('pr_ref: %s', pr_ref)
+      return pr_ref
+    return None
+
+  @property
+  def base_ref(self):
+    """Returns the base branch to diff against (pr fuzzing)."""
+    return os.getenv('GITHUB_BASE_REF')

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/platform_config/github_test.py

@@ -0,0 +1,87 @@
+# Copyright 2021 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.
+"""Tests for platform_config.github."""
+import os
+import unittest
+from unittest import mock
+
+import platform_config.github
+import test_helpers
+
+# pylint: disable=arguments-differ
+
+
+class GetProjectRepoOwnerAndNameTest(unittest.TestCase):
+  """Tests for get_project_repo_owner and get_project_repo_name."""
+
+  @mock.patch('platform_config.github._get_event_data', return_value={})
+  def setUp(self, _):
+    test_helpers.patch_environ(self)
+    self.repo_owner = 'repo-owner'
+    self.repo_name = 'repo-name'
+    os.environ['GITHUB_REPOSITORY'] = f'{self.repo_owner}/{self.repo_name}'
+    self.platform_conf = platform_config.github.PlatformConfig()
+
+  def test_github_repository_owner(self):
+    """Tests that the correct result is returned when repository contains the
+    owner and repo name (as it does on GitHub)."""
+    self.assertEqual(self.platform_conf.project_repo_owner, self.repo_owner)
+
+  def test_github_repository_name(self):
+    """Tests that the correct result is returned when repository contains the
+    owner and repo name (as it does on GitHub)."""
+    os.environ['GITHUB_REPOSITORY'] = f'{self.repo_owner}/{self.repo_name}'
+    self.assertEqual(self.platform_conf.project_repo_name, self.repo_name)
+
+
+class ProjectSrcPathTest(unittest.TestCase):
+  """Tests for project_src_path."""
+
+  def setUp(self):
+    test_helpers.patch_environ(self)
+    self.workspace = '/workspace'
+    os.environ['GITHUB_WORKSPACE'] = self.workspace
+    self.project_src_dir_name = 'project-src'
+
+  @mock.patch('platform_config.github._get_event_data', return_value={})
+  def test_github_unset(self, _):
+    """Tests that project_src_path returns None when no PROJECT_SRC_PATH is
+    set."""
+    github_env = platform_config.github.PlatformConfig()
+    self.assertIsNone(github_env.project_src_path)
+
+  @mock.patch('platform_config.github._get_event_data', return_value={})
+  def test_github(self, _):
+    """Tests that project_src_path returns the correct result on GitHub."""
+    os.environ['PROJECT_SRC_PATH'] = self.project_src_dir_name
+    expected_project_src_path = os.path.join(self.workspace,
+                                             self.project_src_dir_name)
+    github_env = platform_config.github.PlatformConfig()
+    self.assertEqual(github_env.project_src_path, expected_project_src_path)
+
+
+class GetGitUrlTest(unittest.TestCase):
+  """Tests for GenericPlatformConfig.git_url."""
+
+  @mock.patch('platform_config.github._get_event_data', return_value={})
+  def setUp(self, _):
+    test_helpers.patch_environ(self)
+    self.platform_conf = platform_config.github.PlatformConfig()
+
+  def test_repository(self):
+    """Tests that the correct result is returned when repository contains the
+    owner and repo name (as it does on GitHub)."""
+    os.environ['GITHUB_REPOSITORY'] = 'repo/owner'
+    self.assertEqual('https://github.com/repo/owner',
+                     self.platform_conf.git_url)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/platform_config/gitlab.py

@@ -0,0 +1,78 @@
+# 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.
+"""Module for getting the configuration CIFuzz needs to run on GitLab."""
+import logging
+import os
+
+import environment
+import platform_config
+
+
+class PlatformConfig(platform_config.BasePlatformConfig):
+  """CI environment for GitLab."""
+
+  @property
+  def workspace(self):
+    """Returns the workspace."""
+    return os.path.join(os.getenv('CI_BUILDS_DIR'), os.getenv('CI_JOB_ID'))
+
+  @property
+  def git_sha(self):
+    """Returns the Git SHA to checkout and fuzz."""
+    return os.getenv('CI_COMMIT_SHA')
+
+  @property
+  def project_src_path(self):
+    """Returns the directory with the source of the project"""
+    return os.getenv('CI_PROJECT_DIR')
+
+  @property
+  def token(self):
+    """Returns the job token"""
+    return os.getenv('CI_JOB_TOKEN')
+
+  @property
+  def project_repo_name(self):
+    """Returns the project's name"""
+    return os.getenv('CI_PROJECT_NAME')
+
+  @property
+  def base_commit(self):
+    """Returns the previous commit sha for commit-fuzzing"""
+    base_commit = None
+    if os.getenv('CI_PIPELINE_SOURCE') == 'push':
+      base_commit = os.getenv('CI_COMMIT_BEFORE_SHA')
+    logging.debug('base_commit: %s.', base_commit)
+    return base_commit
+
+  @property
+  def base_ref(self):
+    """Returns the base commit sha for a merge request"""
+    # Could also be CI_MERGE_REQUEST_TARGET_BRANCH_NAME.
+    return os.getenv('CI_MERGE_REQUEST_DIFF_BASE_SHA')
+
+  @property
+  def filestore(self):
+    """Returns the filestore used to store persistent data."""
+    return os.environ.get('FILESTORE', 'gitlab')
+
+  @property
+  def artifacts_dir(self):
+    """Gitlab: returns the directory to put artifacts"""
+    return environment.get('CFL_ARTIFACTS_DIR', 'artifacts')
+
+  @property
+  def cache_dir(self):
+    """Gitlab: returns the directory to use as cache"""
+    return environment.get('CFL_CACHE_DIR', 'cache')

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/platform_config/standalone.py

@@ -0,0 +1,33 @@
+# 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.
+"""Module for getting the configuration CIFuzz needs to run standalone."""
+import os
+
+import platform_config
+
+# pylint: disable=too-few-public-methods
+
+
+class PlatformConfig(platform_config.BasePlatformConfig):
+  """CI environment for Standalone."""
+
+  @property
+  def filestore(self):
+    """Returns the filestore used to store persistent data."""
+    return os.environ.get('FILESTORE', 'filesystem')
+
+  @property
+  def filestore_root_dir(self):
+    """Returns the filestore used to store persistent data."""
+    return os.environ['FILESTORE_ROOT_DIR']

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/run_fuzzers.py

@@ -0,0 +1,321 @@
+# Copyright 2021 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.
+"""Module for running fuzzers."""
+import enum
+import logging
+import os
+import sys
+import time
+
+import clusterfuzz_deployment
+import fuzz_target
+import generate_coverage_report
+import workspace_utils
+import sarif_utils
+
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+import utils
+
+
+class RunFuzzersResult(enum.Enum):
+  """Enum result from running fuzzers."""
+  ERROR = 0
+  BUG_FOUND = 1
+  NO_BUG_FOUND = 2
+
+
+class BaseFuzzTargetRunner:
+  """Base class for fuzzer runners."""
+
+  def __init__(self, config):
+    self.config = config
+    self.workspace = workspace_utils.Workspace(config)
+    self.clusterfuzz_deployment = (
+        clusterfuzz_deployment.get_clusterfuzz_deployment(
+            self.config, self.workspace))
+
+    # Set by the initialize method.
+    self.fuzz_target_paths = None
+
+  def get_fuzz_targets(self):
+    """Returns fuzz targets in out directory."""
+    return utils.get_fuzz_targets(self.workspace.out)
+
+  def initialize(self):
+    """Initialization method. Must be called before calling run_fuzz_targets.
+    Returns True on success."""
+    # Use a separate initialization function so we can return False on failure
+    # instead of exceptioning like we need to do if this were done in the
+    # __init__ method.
+
+    logging.info('Using %s sanitizer.', self.config.sanitizer)
+
+    # TODO(metzman) Add a check to ensure we aren't over time limit.
+    if not self.config.fuzz_seconds or self.config.fuzz_seconds < 1:
+      logging.error(
+          'Fuzz_seconds argument must be greater than 1, but was: %s.',
+          self.config.fuzz_seconds)
+      return False
+
+    if not os.path.exists(self.workspace.out):
+      logging.error('Out directory: %s does not exist.', self.workspace.out)
+      return False
+
+    if not os.path.exists(self.workspace.artifacts):
+      os.makedirs(self.workspace.artifacts)
+    elif (not os.path.isdir(self.workspace.artifacts) or
+          os.listdir(self.workspace.artifacts)):
+      logging.error('Artifacts path: %s exists and is not an empty directory.',
+                    self.workspace.artifacts)
+      return False
+
+    self.fuzz_target_paths = self.get_fuzz_targets()
+    logging.info('Fuzz targets: %s', self.fuzz_target_paths)
+    if not self.fuzz_target_paths:
+      logging.error('No fuzz targets were found in out directory: %s.',
+                    self.workspace.out)
+      return False
+
+    return True
+
+  def cleanup_after_fuzz_target_run(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Cleans up after running |fuzz_target_obj|."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def run_fuzz_target(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Fuzzes with |fuzz_target_obj| and returns the result."""
+    raise NotImplementedError('Child class must implement method.')
+
+  @property
+  def quit_on_bug_found(self):
+    """Property that is checked to determine if fuzzing should quit after first
+    bug is found."""
+    raise NotImplementedError('Child class must implement method.')
+
+  def create_fuzz_target_obj(self, target_path, run_seconds):
+    """Returns a fuzz target object."""
+    return fuzz_target.FuzzTarget(target_path, run_seconds, self.workspace,
+                                  self.clusterfuzz_deployment, self.config)
+
+  def run_fuzz_targets(self):
+    """Runs fuzz targets. Returns True if a bug was found."""
+    fuzzers_left_to_run = len(self.fuzz_target_paths)
+
+    # Make a copy since we will mutate it.
+    fuzz_seconds = self.config.fuzz_seconds
+
+    min_seconds_per_fuzzer = fuzz_seconds // fuzzers_left_to_run
+    bug_found = False
+    for target_path in self.fuzz_target_paths:
+      # By doing this, we can ensure that every fuzz target runs for at least
+      # min_seconds_per_fuzzer, but that other fuzzers will have longer to run
+      # if one ends early.
+      run_seconds = max(fuzz_seconds // fuzzers_left_to_run,
+                        min_seconds_per_fuzzer)
+
+      target = self.create_fuzz_target_obj(target_path, run_seconds)
+      start_time = time.time()
+      result = self.run_fuzz_target(target)
+      self.cleanup_after_fuzz_target_run(target)
+
+      # It's OK if this goes negative since we take max when determining
+      # run_seconds.
+      fuzz_seconds -= time.time() - start_time
+
+      fuzzers_left_to_run -= 1
+      if not result.testcase or not result.stacktrace:
+        logging.info('Fuzzer %s finished running without reportable crashes.',
+                     target.target_name)
+        continue
+
+      bug_found = True
+      if self.quit_on_bug_found:
+        logging.info('Bug found. Stopping fuzzing.')
+        break
+
+    # pylint: disable=undefined-loop-variable
+    if not target_path:
+      logging.error('Ran no fuzz targets.')
+    elif self.config.output_sarif:
+      # TODO(metzman): Handle multiple crashes.
+      write_fuzz_result_to_sarif(result, target_path, self.workspace)
+    self.clusterfuzz_deployment.upload_crashes()
+    return bug_found
+
+
+def write_fuzz_result_to_sarif(fuzz_result, target_path, workspace):
+  """Write results of fuzzing to SARIF."""
+  logging.info('Writing sarif results.')
+  sarif_utils.write_stacktrace_to_sarif(fuzz_result.stacktrace, target_path,
+                                        workspace)
+
+
+class PruneTargetRunner(BaseFuzzTargetRunner):
+  """Runner that prunes corpora."""
+
+  @property
+  def quit_on_bug_found(self):
+    return False
+
+  def run_fuzz_target(self, fuzz_target_obj):
+    """Prunes with |fuzz_target_obj| and returns the result."""
+    result = fuzz_target_obj.prune()
+    logging.debug('Corpus path contents: %s.', os.listdir(result.corpus_path))
+    self.clusterfuzz_deployment.upload_corpus(fuzz_target_obj.target_name,
+                                              result.corpus_path,
+                                              replace=True)
+    return result
+
+  def cleanup_after_fuzz_target_run(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Cleans up after pruning with |fuzz_target_obj|."""
+    fuzz_target_obj.free_disk_if_needed()
+
+
+NON_FUZZ_TARGETS_FOR_COVERAGE = {
+    'llvm-symbolizer',
+    'jazzer_agent_deploy.jar',
+    'jazzer_driver',
+    'jazzer_driver_with_sanitizer',
+}
+
+
+def is_coverage_fuzz_target(file_path):
+  """Returns whether |file_path| is a fuzz target binary for the purposes of a
+  coverage report. Inspired by infra/base-images/base-runner/coverage."""
+  if not os.path.isfile(file_path):
+    return False
+  if not utils.is_executable(file_path):
+    return False
+  filename = os.path.basename(file_path)
+  return filename not in NON_FUZZ_TARGETS_FOR_COVERAGE
+
+
+def get_coverage_fuzz_targets(out):
+  """Returns a list of fuzz targets in |out| for coverage."""
+  # We only want fuzz targets from the root because during the coverage build,
+  # a lot of the image's filesystem is copied into /out for the purpose of
+  # generating coverage reports.
+  fuzz_targets = []
+  for filename in os.listdir(out):
+    file_path = os.path.join(out, filename)
+    if is_coverage_fuzz_target(file_path):
+      fuzz_targets.append(file_path)
+  return fuzz_targets
+
+
+class CoverageTargetRunner(BaseFuzzTargetRunner):
+  """Runner that runs the 'coverage' command."""
+
+  @property
+  def quit_on_bug_found(self):
+    raise NotImplementedError('Not implemented for CoverageTargetRunner.')
+
+  def get_fuzz_targets(self):
+    """Returns fuzz targets in out directory."""
+    return get_coverage_fuzz_targets(self.workspace.out)
+
+  def run_fuzz_targets(self):
+    """Generates a coverage report. Always returns False since it never finds
+    any bugs."""
+    generate_coverage_report.generate_coverage_report(
+        self.fuzz_target_paths, self.workspace, self.clusterfuzz_deployment,
+        self.config)
+    return False
+
+  def run_fuzz_target(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Fuzzes with |fuzz_target_obj| and returns the result."""
+    raise NotImplementedError('Not implemented for CoverageTargetRunner.')
+
+  def cleanup_after_fuzz_target_run(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Cleans up after running |fuzz_target_obj|."""
+    raise NotImplementedError('Not implemented for CoverageTargetRunner.')
+
+
+class CiFuzzTargetRunner(BaseFuzzTargetRunner):
+  """Runner for fuzz targets used in CI (patch-fuzzing) context."""
+
+  @property
+  def quit_on_bug_found(self):
+    return True
+
+  def cleanup_after_fuzz_target_run(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    """Cleans up after running |fuzz_target_obj|."""
+    fuzz_target_obj.free_disk_if_needed()
+
+  def run_fuzz_target(self, fuzz_target_obj):  # pylint: disable=no-self-use
+    return fuzz_target_obj.fuzz()
+
+
+class BatchFuzzTargetRunner(BaseFuzzTargetRunner):
+  """Runner for fuzz targets used in batch fuzzing context."""
+
+  @property
+  def quit_on_bug_found(self):
+    return False
+
+  def run_fuzz_target(self, fuzz_target_obj):
+    """Fuzzes with |fuzz_target_obj| and returns the result."""
+    result = fuzz_target_obj.fuzz(batch=True)
+    logging.debug('Corpus path contents: %s.', os.listdir(result.corpus_path))
+    self.clusterfuzz_deployment.upload_corpus(fuzz_target_obj.target_name,
+                                              result.corpus_path)
+    return result
+
+  def cleanup_after_fuzz_target_run(self, fuzz_target_obj):
+    """Cleans up after running |fuzz_target_obj|."""
+    # This must be done after we upload the corpus, otherwise it will be deleted
+    # before we get a chance to upload it. We can't delete the fuzz target
+    # because it is needed when we upload the build.
+    fuzz_target_obj.free_disk_if_needed(delete_fuzz_target=False)
+
+
+_MODE_RUNNER_MAPPING = {
+    'batch': BatchFuzzTargetRunner,
+    'coverage': CoverageTargetRunner,
+    'prune': PruneTargetRunner,
+    'code-change': CiFuzzTargetRunner,
+}
+
+
+def get_fuzz_target_runner(config):
+  """Returns a fuzz target runner object based on the mode of
+  |config|."""
+  runner = _MODE_RUNNER_MAPPING[config.mode](config)
+  logging.info('run fuzzers MODE is: %s. Runner: %s.', config.mode, runner)
+  return runner
+
+
+def run_fuzzers(config):  # pylint: disable=too-many-locals
+  """Runs fuzzers for a specific OSS-Fuzz project.
+
+  Args:
+    config: A RunFuzzTargetsConfig.
+
+  Returns:
+    A RunFuzzersResult enum value indicating what happened during fuzzing.
+  """
+  fuzz_target_runner = get_fuzz_target_runner(config)
+  if not fuzz_target_runner.initialize():
+    # We didn't fuzz at all because of internal (CIFuzz) errors. And we didn't
+    # find any bugs.
+    return RunFuzzersResult.ERROR
+
+  if not fuzz_target_runner.run_fuzz_targets():
+    # We fuzzed successfully, but didn't find any bugs (in the fuzz target).
+    return RunFuzzersResult.NO_BUG_FOUND
+
+  # We fuzzed successfully and found bug(s) in the fuzz targets.
+  return RunFuzzersResult.BUG_FOUND

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/run_fuzzers_entrypoint.py

@@ -0,0 +1,97 @@
+# Copyright 2020 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.
+"""Runs a specific OSS-Fuzz project's fuzzers for CI tools."""
+import logging
+import sys
+
+import config_utils
+import docker
+import logs
+import run_fuzzers
+
+# pylint: disable=c-extension-no-member
+# pylint gets confused because of the relative import of cifuzz.
+
+logs.init()
+
+
+def delete_unneeded_docker_images(config):
+  """Deletes unneeded docker images if running in an environment with low
+  disk space."""
+  if not config.low_disk_space:
+    return
+  logging.info('Deleting builder docker images to save disk space.')
+  project_image = docker.get_project_image_name(config.oss_fuzz_project_name)
+  images = [
+      project_image,
+      docker.BASE_BUILDER_TAG,
+      docker.BASE_BUILDER_TAG + '-go',
+      docker.BASE_BUILDER_TAG + '-javascript',
+      docker.BASE_BUILDER_TAG + '-jvm',
+      docker.BASE_BUILDER_TAG + '-python',
+      docker.BASE_BUILDER_TAG + '-rust',
+      docker.BASE_BUILDER_TAG + '-ruby',
+      docker.BASE_BUILDER_TAG + '-swift',
+  ]
+  docker.delete_images(images)
+
+
+def run_fuzzers_entrypoint():
+  """This is the entrypoint for the run_fuzzers github action.
+  This action can be added to any OSS-Fuzz project's workflow that uses
+  Github."""
+  config = config_utils.RunFuzzersConfig()
+  # The default return code when an error occurs.
+  returncode = 1
+  if config.dry_run:
+    # Sets the default return code on error to success.
+    returncode = 0
+
+  delete_unneeded_docker_images(config)
+  # Run the specified project's fuzzers from the build.
+  result = run_fuzzers.run_fuzzers(config)
+  if result == run_fuzzers.RunFuzzersResult.ERROR:
+    logging.error('Error occurred while running in workspace %s.',
+                  config.workspace)
+    return returncode
+  if result == run_fuzzers.RunFuzzersResult.BUG_FOUND:
+    logging.info('Bug found.')
+    if not config.dry_run:
+      # Return 2 when a bug was found by a fuzzer causing the CI to fail.
+      return 2
+  return 0
+
+
+def main():
+  """Runs project's fuzzers for CI tools.
+  This is the entrypoint for the run_fuzzers github action.
+
+  NOTE: libFuzzer binaries must be located in the $WORKSPACE/build-out
+  directory in order for this action to be used. This action will only fuzz the
+  binaries that are located in that directory. It is recommended that you add
+  the build_fuzzers action preceding this one.
+
+  NOTE: Any crash report will be in the filepath:
+  ${GITHUB_WORKSPACE}/out/testcase
+  This can be used in parallel with the upload-artifact action to surface the
+  logs.
+
+  Returns:
+    0 on success or nonzero on failure.
+  """
+  return run_fuzzers_entrypoint()
+
+
+if __name__ == '__main__':
+  sys.exit(main())

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/run_fuzzers_test.py

@@ -0,0 +1,475 @@
+# Copyright 2021 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.
+"""Tests for running fuzzers."""
+import json
+import os
+import shutil
+import stat
+import sys
+import tempfile
+import unittest
+from unittest import mock
+
+import parameterized
+from pyfakefs import fake_filesystem_unittest
+
+import build_fuzzers
+import fuzz_target
+import run_fuzzers
+
+# pylint: disable=wrong-import-position
+INFRA_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.append(INFRA_DIR)
+
+import helper
+import test_helpers
+
+# NOTE: This integration test relies on
+# https://github.com/google/oss-fuzz/tree/master/projects/example project.
+EXAMPLE_PROJECT = 'example'
+
+# Location of files used for testing.
+TEST_DATA_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                              'test_data')
+
+MEMORY_FUZZER_DIR = os.path.join(TEST_DATA_PATH, 'memory')
+MEMORY_FUZZER = 'curl_fuzzer_memory'
+
+UNDEFINED_FUZZER_DIR = os.path.join(TEST_DATA_PATH, 'undefined')
+UNDEFINED_FUZZER = 'curl_fuzzer_undefined'
+
+FUZZ_SECONDS = 10
+
+
+class RunFuzzerIntegrationTestMixin:  # pylint: disable=too-few-public-methods,invalid-name
+  """Mixin for integration test classes that runbuild_fuzzers on builds of a
+  specific sanitizer."""
+  # These must be defined by children.
+  FUZZER_DIR = None
+  FUZZER = None
+
+  def setUp(self):
+    """Patch the environ so that we can execute runner scripts."""
+    test_helpers.patch_environ(self, runner=True)
+
+  def _test_run_with_sanitizer(self, fuzzer_dir, sanitizer):
+    """Calls run_fuzzers on fuzzer_dir and |sanitizer| and asserts
+    the run succeeded and that no bug was found."""
+    with test_helpers.temp_dir_copy(fuzzer_dir) as fuzzer_dir_copy:
+      config = test_helpers.create_run_config(fuzz_seconds=FUZZ_SECONDS,
+                                              workspace=fuzzer_dir_copy,
+                                              oss_fuzz_project_name='curl',
+                                              sanitizer=sanitizer)
+      result = run_fuzzers.run_fuzzers(config)
+    self.assertEqual(result, run_fuzzers.RunFuzzersResult.NO_BUG_FOUND)
+
+
+@unittest.skipIf(not os.getenv('INTEGRATION_TESTS'),
+                 'INTEGRATION_TESTS=1 not set')
+class RunMemoryFuzzerIntegrationTest(RunFuzzerIntegrationTestMixin,
+                                     unittest.TestCase):
+  """Integration test for build_fuzzers with an MSAN build."""
+  FUZZER_DIR = MEMORY_FUZZER_DIR
+  FUZZER = MEMORY_FUZZER
+
+  def test_run_with_memory_sanitizer(self):
+    """Tests run_fuzzers with a valid MSAN build."""
+    self._test_run_with_sanitizer(self.FUZZER_DIR, 'memory')
+
+
+@unittest.skipIf(not os.getenv('INTEGRATION_TESTS'),
+                 'INTEGRATION_TESTS=1 not set')
+class RunUndefinedFuzzerIntegrationTest(RunFuzzerIntegrationTestMixin,
+                                        unittest.TestCase):
+  """Integration test for build_fuzzers with an UBSAN build."""
+  FUZZER_DIR = UNDEFINED_FUZZER_DIR
+  FUZZER = UNDEFINED_FUZZER
+
+  def test_run_with_undefined_sanitizer(self):
+    """Tests run_fuzzers with a valid UBSAN build."""
+    self._test_run_with_sanitizer(self.FUZZER_DIR, 'undefined')
+
+
+class BaseFuzzTargetRunnerTest(unittest.TestCase):
+  """Tests BaseFuzzTargetRunner."""
+
+  def _create_runner(self, **kwargs):  # pylint: disable=no-self-use
+    defaults = {
+        'fuzz_seconds': FUZZ_SECONDS,
+        'oss_fuzz_project_name': EXAMPLE_PROJECT
+    }
+    for default_key, default_value in defaults.items():
+      if default_key not in kwargs:
+        kwargs[default_key] = default_value
+
+    config = test_helpers.create_run_config(**kwargs)
+    return run_fuzzers.BaseFuzzTargetRunner(config)
+
+  def _test_initialize_fail(self, expected_error_args, **create_runner_kwargs):
+    with mock.patch('logging.error') as mock_error:
+      runner = self._create_runner(**create_runner_kwargs)
+      self.assertFalse(runner.initialize())
+      mock_error.assert_called_with(*expected_error_args)
+
+  @parameterized.parameterized.expand([(0,), (None,), (-1,)])
+  def test_initialize_invalid_fuzz_seconds(self, fuzz_seconds):
+    """Tests initialize fails with an invalid fuzz seconds."""
+    expected_error_args = ('Fuzz_seconds argument must be greater than 1, '
+                           'but was: %s.', fuzz_seconds)
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      with mock.patch('utils.get_fuzz_targets') as mock_get_fuzz_targets:
+        mock_get_fuzz_targets.return_value = [
+            os.path.join(out_path, 'fuzz_target')
+        ]
+        self._test_initialize_fail(expected_error_args,
+                                   fuzz_seconds=fuzz_seconds,
+                                   workspace=tmp_dir)
+
+  def test_initialize_no_out_dir(self):
+    """Tests initialize fails with no out dir."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      expected_error_args = ('Out directory: %s does not exist.', out_path)
+      self._test_initialize_fail(expected_error_args, workspace=tmp_dir)
+
+  def test_initialize_nonempty_artifacts(self):
+    """Tests initialize with a file artifacts path."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      os.makedirs(os.path.join(tmp_dir, 'out'))
+      artifacts_path = os.path.join(tmp_dir, 'out', 'artifacts')
+      with open(artifacts_path, 'w') as artifacts_handle:
+        artifacts_handle.write('fake')
+      expected_error_args = (
+          'Artifacts path: %s exists and is not an empty directory.',
+          artifacts_path)
+      self._test_initialize_fail(expected_error_args, workspace=tmp_dir)
+
+  def test_initialize_bad_artifacts(self):
+    """Tests initialize with a non-empty artifacts path."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      artifacts_path = os.path.join(tmp_dir, 'out', 'artifacts')
+      os.makedirs(artifacts_path)
+      artifact_path = os.path.join(artifacts_path, 'artifact')
+      with open(artifact_path, 'w') as artifact_handle:
+        artifact_handle.write('fake')
+      expected_error_args = (
+          'Artifacts path: %s exists and is not an empty directory.',
+          artifacts_path)
+      self._test_initialize_fail(expected_error_args, workspace=tmp_dir)
+
+  @mock.patch('utils.get_fuzz_targets')
+  @mock.patch('logging.error')
+  def test_initialize_empty_artifacts(self, mock_log_error,
+                                      mock_get_fuzz_targets):
+    """Tests initialize with an empty artifacts dir."""
+    mock_get_fuzz_targets.return_value = ['fuzz-target']
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      artifacts_path = os.path.join(tmp_dir, 'out', 'artifacts')
+      os.makedirs(artifacts_path)
+      runner = self._create_runner(workspace=tmp_dir)
+      self.assertTrue(runner.initialize())
+      mock_log_error.assert_not_called()
+      self.assertTrue(os.path.isdir(artifacts_path))
+
+  @mock.patch('utils.get_fuzz_targets')
+  @mock.patch('logging.error')
+  def test_initialize_no_artifacts(self, mock_log_error, mock_get_fuzz_targets):
+    """Tests initialize with no artifacts dir (the expected setting)."""
+    mock_get_fuzz_targets.return_value = ['fuzz-target']
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      runner = self._create_runner(workspace=tmp_dir)
+      self.assertTrue(runner.initialize())
+      mock_log_error.assert_not_called()
+      self.assertTrue(os.path.isdir(os.path.join(tmp_dir, 'out', 'artifacts')))
+
+  def test_initialize_no_fuzz_targets(self):
+    """Tests initialize with no fuzz targets."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.makedirs(out_path)
+      expected_error_args = ('No fuzz targets were found in out directory: %s.',
+                             out_path)
+      self._test_initialize_fail(expected_error_args, workspace=tmp_dir)
+
+
+class CiFuzzTargetRunnerTest(fake_filesystem_unittest.TestCase):
+  """Tests that CiFuzzTargetRunner works as intended."""
+
+  def setUp(self):
+    self.setUpPyfakefs()
+
+  @mock.patch('clusterfuzz_deployment.OSSFuzz.upload_crashes')
+  @mock.patch('utils.get_fuzz_targets')
+  @mock.patch('run_fuzzers.CiFuzzTargetRunner.run_fuzz_target')
+  @mock.patch('run_fuzzers.CiFuzzTargetRunner.create_fuzz_target_obj')
+  def test_run_fuzz_targets_quits(self, mock_create_fuzz_target_obj,
+                                  mock_run_fuzz_target, mock_get_fuzz_targets,
+                                  mock_upload_crashes):
+    """Tests that run_fuzz_targets quits on the first crash it finds."""
+    workspace = 'workspace'
+    out_path = os.path.join(workspace, 'build-out')
+    self.fs.create_dir(out_path)
+    config = test_helpers.create_run_config(
+        fuzz_seconds=FUZZ_SECONDS,
+        workspace=workspace,
+        oss_fuzz_project_name=EXAMPLE_PROJECT)
+    runner = run_fuzzers.CiFuzzTargetRunner(config)
+
+    mock_get_fuzz_targets.return_value = ['target1', 'target2']
+    runner.initialize()
+    testcase = os.path.join(workspace, 'testcase')
+    self.fs.create_file(testcase)
+    stacktrace = 'stacktrace'
+    corpus_dir = 'corpus'
+    self.fs.create_dir(corpus_dir)
+    mock_run_fuzz_target.return_value = fuzz_target.FuzzResult(
+        testcase, stacktrace, corpus_dir)
+    magic_mock = mock.MagicMock()
+    magic_mock.target_name = 'target1'
+    mock_create_fuzz_target_obj.return_value = magic_mock
+    self.assertTrue(runner.run_fuzz_targets())
+    self.assertEqual(mock_run_fuzz_target.call_count, 1)
+    self.assertEqual(mock_upload_crashes.call_count, 1)
+
+
+class BatchFuzzTargetRunnerTest(fake_filesystem_unittest.TestCase):
+  """Tests that BatchFuzzTargetRunnerTest works as intended."""
+  WORKSPACE = 'workspace'
+  STACKTRACE = 'stacktrace'
+  CORPUS_DIR = 'corpus'
+
+  def setUp(self):
+    self.setUpPyfakefs()
+    out_dir = os.path.join(self.WORKSPACE, 'build-out')
+    self.fs.create_dir(out_dir)
+    self.testcase1 = os.path.join(out_dir, 'testcase-aaa')
+    self.fs.create_file(self.testcase1)
+    self.testcase2 = os.path.join(out_dir, 'testcase-bbb')
+    self.fs.create_file(self.testcase2)
+    self.config = test_helpers.create_run_config(fuzz_seconds=FUZZ_SECONDS,
+                                                 workspace=self.WORKSPACE,
+                                                 cfl_platform='github')
+
+  @mock.patch('utils.get_fuzz_targets', return_value=['target1', 'target2'])
+  @mock.patch('clusterfuzz_deployment.ClusterFuzzLite.upload_crashes')
+  @mock.patch('run_fuzzers.BatchFuzzTargetRunner.run_fuzz_target')
+  @mock.patch('run_fuzzers.BatchFuzzTargetRunner.create_fuzz_target_obj')
+  def test_run_fuzz_targets_quits(self, mock_create_fuzz_target_obj,
+                                  mock_run_fuzz_target, mock_upload_crashes, _):
+    """Tests that run_fuzz_targets doesn't quit on the first crash it finds."""
+    runner = run_fuzzers.BatchFuzzTargetRunner(self.config)
+    runner.initialize()
+
+    call_count = 0
+
+    def mock_run_fuzz_target_impl(_):
+      nonlocal call_count
+      if call_count == 0:
+        testcase = self.testcase1
+      elif call_count == 1:
+        testcase = self.testcase2
+      assert call_count != 2
+      call_count += 1
+      if not os.path.exists(self.CORPUS_DIR):
+        self.fs.create_dir(self.CORPUS_DIR)
+      return fuzz_target.FuzzResult(testcase, self.STACKTRACE, self.CORPUS_DIR)
+
+    mock_run_fuzz_target.side_effect = mock_run_fuzz_target_impl
+    magic_mock = mock.MagicMock()
+    magic_mock.target_name = 'target1'
+    mock_create_fuzz_target_obj.return_value = magic_mock
+    self.assertTrue(runner.run_fuzz_targets())
+    self.assertEqual(mock_run_fuzz_target.call_count, 2)
+    self.assertEqual(mock_upload_crashes.call_count, 1)
+
+
+class GetCoverageTargetsTest(unittest.TestCase):
+  """Tests for get_coverage_fuzz_targets."""
+
+  def test_get_fuzz_targets(self):
+    """Tests that get_coverage_fuzz_targets returns expected targets."""
+    with tempfile.TemporaryDirectory() as temp_dir:
+      # Setup.
+      fuzz_target_path = os.path.join(temp_dir, 'fuzz-target')
+      with open(fuzz_target_path, 'w') as file_handle:
+        file_handle.write('')
+      fuzz_target_st = os.stat(fuzz_target_path)
+      os.chmod(fuzz_target_path, fuzz_target_st.st_mode | stat.S_IEXEC)
+      non_fuzz_target1 = os.path.join(temp_dir, 'non-fuzz-target1')
+      with open(non_fuzz_target1, 'w') as file_handle:
+        file_handle.write('LLVMFuzzerTestOneInput')
+      subdir = os.path.join(temp_dir, 'subdir')
+      os.mkdir(subdir)
+      non_fuzz_target2 = os.path.join(subdir, 'non-fuzz-target1')
+      with open(non_fuzz_target2, 'w') as file_handle:
+        file_handle.write('LLVMFuzzerTestOneInput')
+
+      self.assertEqual(run_fuzzers.get_coverage_fuzz_targets(temp_dir),
+                       [fuzz_target_path])
+
+
+@unittest.skip('TODO(metzman): Fix this test')
+@unittest.skipIf(not os.getenv('INTEGRATION_TESTS'),
+                 'INTEGRATION_TESTS=1 not set')
+class CoverageReportIntegrationTest(unittest.TestCase):
+  """Integration tests for coverage reports."""
+  SANITIZER = 'coverage'
+
+  def setUp(self):
+    test_helpers.patch_environ(self, runner=True)
+
+  @mock.patch('filestore.github_actions._upload_artifact_with_upload_js')
+  def test_coverage_report(self, _):
+    """Tests generation of coverage reports end-to-end, from building to
+    generation."""
+
+    with test_helpers.docker_temp_dir() as temp_dir:
+      shared = os.path.join(temp_dir, 'shared')
+      os.mkdir(shared)
+      copy_command = ('cp -r /opt/code_coverage /shared && '
+                      'cp $(which llvm-profdata) /shared && '
+                      'cp $(which llvm-cov) /shared')
+      assert helper.docker_run([
+          '-v', f'{shared}:/shared', 'ghcr.io/aixcc-finals/base-runner', 'bash',
+          '-c', copy_command
+      ])
+
+      os.environ['CODE_COVERAGE_SRC'] = os.path.join(shared, 'code_coverage')
+      os.environ['PATH'] += os.pathsep + shared
+      # Do coverage build.
+      build_config = test_helpers.create_build_config(
+          oss_fuzz_project_name=EXAMPLE_PROJECT,
+          project_repo_name='oss-fuzz',
+          workspace=temp_dir,
+          git_sha='0b95fe1039ed7c38fea1f97078316bfc1030c523',
+          base_commit='da0746452433dc18bae699e355a9821285d863c8',
+          sanitizer=self.SANITIZER,
+          cfl_platform='github',
+          # Needed for test not to fail because of permissions issues.
+          bad_build_check=False)
+      self.assertTrue(build_fuzzers.build_fuzzers(build_config))
+
+      # TODO(metzman): Get rid of this here and make 'compile' do this.
+      chmod_command = ('chmod -R +r /out && '
+                       'find /out -type d -exec chmod +x {} +')
+
+      assert helper.docker_run([
+          '-v', f'{os.path.join(temp_dir, "build-out")}:/out',
+          'ghcr.io/aixcc-finals/base-builder', 'bash', '-c', chmod_command
+      ])
+
+      # Generate report.
+      run_config = test_helpers.create_run_config(fuzz_seconds=FUZZ_SECONDS,
+                                                  workspace=temp_dir,
+                                                  sanitizer=self.SANITIZER,
+                                                  mode='coverage',
+                                                  cfl_platform='github')
+      result = run_fuzzers.run_fuzzers(run_config)
+      self.assertEqual(result, run_fuzzers.RunFuzzersResult.NO_BUG_FOUND)
+      expected_summary_path = os.path.join(
+          TEST_DATA_PATH, 'example_coverage_report_summary.json')
+      with open(expected_summary_path) as file_handle:
+        expected_summary = json.loads(file_handle.read())
+        actual_summary_path = os.path.join(temp_dir, 'cifuzz-coverage',
+                                           'report', 'linux', 'summary.json')
+      with open(actual_summary_path) as file_handle:
+        actual_summary = json.loads(file_handle.read())
+      self.assertEqual(expected_summary, actual_summary)
+
+
+@unittest.skipIf(not os.getenv('INTEGRATION_TESTS'),
+                 'INTEGRATION_TESTS=1 not set')
+class RunAddressFuzzersIntegrationTest(RunFuzzerIntegrationTestMixin,
+                                       unittest.TestCase):
+  """Integration tests for build_fuzzers with an ASAN build."""
+
+  BUILD_DIR_NAME = 'cifuzz-latest-build'
+
+  def test_new_bug_found(self):
+    """Tests run_fuzzers with a valid ASAN build."""
+    # Set the first return value to True, then the second to False to
+    # emulate a bug existing in the current PR but not on the downloaded
+    # OSS-Fuzz build.
+    with mock.patch('fuzz_target.FuzzTarget.is_reproducible',
+                    side_effect=[True, False]):
+      with tempfile.TemporaryDirectory() as tmp_dir:
+        workspace = os.path.join(tmp_dir, 'workspace')
+        shutil.copytree(TEST_DATA_PATH, workspace)
+        config = test_helpers.create_run_config(
+            fuzz_seconds=FUZZ_SECONDS,
+            workspace=workspace,
+            oss_fuzz_project_name=EXAMPLE_PROJECT)
+        result = run_fuzzers.run_fuzzers(config)
+        self.assertEqual(result, run_fuzzers.RunFuzzersResult.BUG_FOUND)
+
+  @mock.patch('fuzz_target.FuzzTarget.is_reproducible',
+              side_effect=[True, True])
+  def test_old_bug_found(self, _):
+    """Tests run_fuzzers with a bug found in OSS-Fuzz before."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      workspace = os.path.join(tmp_dir, 'workspace')
+      shutil.copytree(TEST_DATA_PATH, workspace)
+      config = test_helpers.create_run_config(
+          fuzz_seconds=FUZZ_SECONDS,
+          workspace=workspace,
+          oss_fuzz_project_name=EXAMPLE_PROJECT)
+      result = run_fuzzers.run_fuzzers(config)
+      self.assertEqual(result, run_fuzzers.RunFuzzersResult.NO_BUG_FOUND)
+
+  def test_invalid_build(self):
+    """Tests run_fuzzers with an invalid ASAN build."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      out_path = os.path.join(tmp_dir, 'build-out')
+      os.mkdir(out_path)
+      config = test_helpers.create_run_config(
+          fuzz_seconds=FUZZ_SECONDS,
+          workspace=tmp_dir,
+          oss_fuzz_project_name=EXAMPLE_PROJECT)
+      result = run_fuzzers.run_fuzzers(config)
+    self.assertEqual(result, run_fuzzers.RunFuzzersResult.ERROR)
+
+
+class GetFuzzTargetRunnerTest(unittest.TestCase):
+  """Tests for get_fuzz_fuzz_target_runner."""
+
+  @parameterized.parameterized.expand([
+      ('batch', run_fuzzers.BatchFuzzTargetRunner),
+      ('code-change', run_fuzzers.CiFuzzTargetRunner),
+      ('coverage', run_fuzzers.CoverageTargetRunner)
+  ])
+  def test_get_fuzz_target_runner(self, mode, fuzz_target_runner_cls):
+    """Tests that get_fuzz_target_runner returns the correct runner based on the
+    specified mode."""
+    with tempfile.TemporaryDirectory() as tmp_dir:
+      run_config = test_helpers.create_run_config(
+          fuzz_seconds=FUZZ_SECONDS,
+          workspace=tmp_dir,
+          oss_fuzz_project_name='example',
+          mode=mode)
+      runner = run_fuzzers.get_fuzz_target_runner(run_config)
+      self.assertTrue(isinstance(runner, fuzz_target_runner_cls))
+
+
+if __name__ == '__main__':
+  unittest.main()

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/sarif_utils_test.py

@@ -0,0 +1,128 @@
+# 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.
+"""Tests for sarif_utils.py"""
+import os
+import unittest
+from unittest import mock
+
+import sarif_utils
+
+CRASH_INFO_FILELINE = 403
+
+TEST_DATA = os.path.join(os.path.dirname(__file__), 'test_data')
+
+
+class GetSarifDataTest(unittest.TestCase):
+  """Tests for get_sarif_data."""
+
+  def setUp(self):
+    self.maxDiff = None  # pylint: disable=invalid-name
+
+  def test_get_sarif_data_none(self):
+    """Tests get_sarif_data when there was no crash."""
+    self.assertEqual(sarif_utils.get_sarif_data(None, '/root/target'),
+                     sarif_utils.SARIF_DATA)
+
+  def test_ordinary_case(self):
+    stacktrace_filename = os.path.join(TEST_DATA,
+                                       'sarif_utils_systemd_stack.txt')
+    with open(stacktrace_filename, 'r') as fp:
+      stacktrace = fp.read()
+    expected_result = {
+        'level': 'error',
+        'message': {
+            'text': 'Heap-buffer-overflow\nREAD 4'
+        },
+        'locations': [{
+            'physicalLocation': {
+                'artifactLocation': {
+                    'uri': 'src/core/fuzz-unit-file.c',
+                    'index': 0
+                },
+                'region': {
+                    'startLine': 30,
+                    # We don't have this granualarity fuzzing.
+                    'startColumn': 1,
+                }
+            }
+        }],
+        'ruleId': 'heap-buffer-overflow',
+        'ruleIndex': 2
+    }
+    actual_result = sarif_utils.get_sarif_data(
+        stacktrace, '/root/target')['runs'][0]['results'][0]
+    self.assertEqual(actual_result, expected_result)
+
+  def test_llvmfuzzertestoneinput_case(self):
+    stacktrace_filename = os.path.join(TEST_DATA,
+                                       'sarif_utils_only_llvmfuzzer_stack.txt')
+    with open(stacktrace_filename, 'r') as fp:
+      stacktrace = fp.read()
+    actual_result = sarif_utils.get_sarif_data(
+        stacktrace, '/root/target')['runs'][0]['results']
+    self.assertEqual(actual_result, [])
+
+  def test_msan(self):
+    """Tests that MSAN stacktraces don't exception."""
+    stacktrace_filename = os.path.join(TEST_DATA, 'sarif_utils_msan_stack.txt')
+    with open(stacktrace_filename, 'r') as fp:
+      stacktrace = fp.read()
+
+    actual_result = sarif_utils.get_sarif_data(stacktrace, '/root/target')
+
+
+class RedactSrcPathTest(unittest.TestCase):
+  """Tests for redact_src_path."""
+
+  def test_redact_src_path(self):
+    """Tests redact_src_path."""
+    path = '/src/src-repo/subdir/file'
+    self.assertEqual(sarif_utils.redact_src_path(path), 'subdir/file')
+
+
+def _get_mock_crash_info():
+  """Returns a mock crash_info to be used in tests."""
+  stack_frame = mock.MagicMock()
+  stack_frame.filename = '/src/repo-dir/sub/vuln.cc'
+  stack_frame.function_name = 'vuln_func'
+  stack_frame.fileline = CRASH_INFO_FILELINE
+  crash1_frames = [stack_frame, stack_frame]
+  frames = [crash1_frames]
+  crash_info = mock.MagicMock()
+  crash_info.frames = frames
+  crash_info.crash_state = 'vuln_func\nvuln_func0\nvuln_func1'
+  return crash_info
+
+
+class GetErrorSourceInfoTest(unittest.TestCase):
+  """Tests for get_error_source_info."""
+
+  def test_redact_src_path(self):
+    """Tests that get_error_source_info finds the right source info."""
+    crash_info = _get_mock_crash_info()
+    source_info = sarif_utils.get_error_source_info(crash_info)
+    expected_source_info = ('sub/vuln.cc', CRASH_INFO_FILELINE)
+    self.assertEqual(source_info, expected_source_info)
+
+
+class GetRuleIndexTest(unittest.TestCase):
+  """Tests for get_rule_index."""
+  CRASH_INFO_CRASH_TYPE = 'Heap-use-after-free READ 8'
+
+  def test_get_rule_index(self):
+    """Tests that get_rule_index finds the right rule index."""
+    index = sarif_utils.get_rule_index(self.CRASH_INFO_CRASH_TYPE)
+    self.assertEqual(sarif_utils.SARIF_RULES[index]['id'],
+                     'heap-use-after-free')
+    self.assertEqual(sarif_utils.get_rule_index('no-crashes'), 0)

local-test-tika-delta-01/fuzz-tooling/infra/cifuzz/test_helpers.py

@@ -0,0 +1,117 @@
+# Copyright 2020 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.
+"""Contains convenient helpers for writing tests."""
+
+import contextlib
+import os
+import sys
+import shutil
+import tempfile
+from unittest import mock
+
+import config_utils
+import docker
+import workspace_utils
+
+INFRA_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+# pylint: disable=wrong-import-position,import-error
+sys.path.append(INFRA_DIR)
+
+import helper
+
+
+# TODO(metzman): Get rid of these decorators.
+@mock.patch('config_utils._is_dry_run', return_value=True)
+@mock.patch('platform_config.BasePlatformConfig.project_src_path',
+            return_value=None)
+@mock.patch('os.path.basename', return_value=None)
+def _create_config(config_cls, _, __, ___, **kwargs):
+  """Creates a config object from |config_cls| and then sets every attribute
+  that is a key in |kwargs| to the corresponding value. Asserts that each key in
+  |kwargs| is an attribute of config."""
+  with mock.patch('config_utils.BaseConfig.validate', return_value=True):
+    config = config_cls()
+  for key, value in kwargs.items():
+    assert hasattr(config, key), 'Config doesn\'t have attribute: ' + key
+    setattr(config, key, value)
+
+  return config
+
+
+def create_build_config(**kwargs):
+  """Wrapper around _create_config for build configs."""
+  return _create_config(config_utils.BuildFuzzersConfig, **kwargs)
+
+
+def create_run_config(**kwargs):
+  """Wrapper around _create_config for run configs."""
+  return _create_config(config_utils.RunFuzzersConfig, **kwargs)
+
+
+def create_workspace(workspace_path='/workspace'):
+  """Returns a workspace located at |workspace_path| ('/workspace' by
+  default)."""
+  config = create_run_config(workspace=workspace_path)
+  return workspace_utils.Workspace(config)
+
+
+def patch_environ(testcase_obj, env=None, empty=False, runner=False):
+  """Patch environment. |testcase_obj| is the unittest.TestCase that contains
+  tests. |env|, if specified, is a dictionary of environment variables to start
+  from. If |empty| is True then the new patched environment will be empty. If
+  |runner| is True then the necessary environment variables will be set to run
+  the scripts from base-runner."""
+  if env is None:
+    env = {}
+
+  patcher = mock.patch.dict(os.environ, env)
+  testcase_obj.addCleanup(patcher.stop)
+  patcher.start()
+  if empty:
+    for key in os.environ.copy():
+      del os.environ[key]
+
+  if runner:
+    # Add the scripts for base-runner to the path since the wont be in
+    # /usr/local/bin on host machines during testing.
+    base_runner_dir = os.path.join(INFRA_DIR, 'base-images', 'base-runner')
+    os.environ['PATH'] = (os.environ.get('PATH', '') + os.pathsep +
+                          base_runner_dir)
+    if 'GOPATH' not in os.environ:
+      # A GOPATH must be set or else the coverage script fails, even for getting
+      # the coverage of non-Go programs.
+      os.environ['GOPATH'] = '/root/go'
+
+
+@contextlib.contextmanager
+def temp_dir_copy(directory):
+  """Context manager that yields a temporary copy of |directory|."""
+  with tempfile.TemporaryDirectory() as temp_dir:
+    temp_copy_path = os.path.join(temp_dir, os.path.basename(directory))
+    shutil.copytree(directory, temp_copy_path)
+    yield temp_copy_path
+
+
+@contextlib.contextmanager
+def docker_temp_dir():
+  """Returns a temporary a directory that is useful for use with docker. On
+  cleanup this contextmanager uses docker to delete the directory's contents so
+  that if anything is owned by root it can be deleted (which
+  tempfile.TemporaryDirectory() cannot do) by non-root users."""
+  with tempfile.TemporaryDirectory() as temp_dir:
+    yield temp_dir
+    helper.docker_run([
+        '-v', f'{temp_dir}:/temp_dir', '-t', docker.BASE_BUILDER_TAG,
+        '/bin/bash', '-c', 'rm -rf /temp_dir/*'
+    ])

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/Makefile

@@ -0,0 +1,41 @@
+.POSIX:
+CXX     = clang++
+CFLAGS = -std=c++17 -Wall -Wextra -O3 -g3 -Werror
+
+all: SystemSan target target_file target_dns
+
+SystemSan: SystemSan.cpp inspect_dns.cpp inspect_utils.cpp
+	$(CXX) $(CFLAGS) -lpthread -o $@ $^
+
+# Needs atheris.
+python-test: all
+	./SystemSan python shell_injection_poc_fuzzer.py
+
+target: target.cpp
+	$(CXX) $(CFLAGS) -fsanitize=address,fuzzer -o $@ $^
+
+target_file: target_file.cpp
+	$(CXX) $(CFLAGS) -fsanitize=address,fuzzer -o $@ $^
+
+target_dns: target_dns.cpp
+	$(CXX) $(CFLAGS) -fsanitize=address,fuzzer -o $@ $^
+
+test:  all vuln.dict
+	./SystemSan ./target -dict=vuln.dict
+	./SystemSan ./target_file -dict=vuln.dict
+	./SystemSan ./target_dns -dict=vuln.dict
+
+pytorch-lightning-1.5.10:
+	cp SystemSan.cpp PoEs/pytorch-lightning-1.5.10/; \
+	cd PoEs/pytorch-lightning-1.5.10/; \
+	docker build . --tag syssan_pytorch-lightning; \
+	docker run -t systemsan_pytorch-lightning:latest;
+
+node-shell-quote-v1.7.3:
+	cp SystemSan.cpp PoEs/node-shell-quote-v1.7.3/; \
+	cd PoEs/node-shell-quote-v1.7.3/; \
+	docker build . --tag systemsan_node-shell-quote; \
+	docker run -t systemsan_node-shell-quote:latest;
+
+clean:
+	rm -f SystemSan /tmp/tripwire target target_file target_dns

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/node-shell-quote-v1.7.3/Dockerfile

@@ -0,0 +1,35 @@
+# 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.
+#
+# Build and run the proof of error in shell-quote v1.7.3.
+
+FROM ghcr.io/aixcc-finals/base-builder
+
+RUN apt update && \
+  apt install -y \
+  vim \
+  npm && \
+  git clone \
+    --depth 1 \
+    https://github.com/substack/node-shell-quote.git && \
+  npm config set @gitlab-org:registry \
+    https://gitlab.com/api/v4/packages/npm/
+
+COPY ./build.sh $SRC
+RUN  ./build.sh
+
+COPY . $SRC
+RUN make SystemSan
+
+CMD ["make", "run"]

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/node-shell-quote-v1.7.3/build.sh

@@ -0,0 +1,22 @@
+#!/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.
+#
+################################################################################
+
+# Build and install project (using current CFLAGS, CXXFLAGS).
+npm install ./node-shell-quote/
+
+# Build fuzzers.
+npm i -g @gitlab-org/jsfuzz

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/node-shell-quote-v1.7.3/target.js

@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+/* Exploit shell quote with fuzzer's input as a parameter of echo.
+ * This PoC is extended from a report in GitHub Advisory Database:
+ * https://github.com/advisories/GHSA-g4rg-993r-mgx7
+ * The original report records a shell injection exploit in shell-quote v1.7.2,
+ * we show that a similar shell corruption exploit still persists in v1.7.3,
+ * after a commit that intends to fix the original exploit.
+ * */
+
+/* Fuzz the target program with buf generated by Jsfuzz. */
+function fuzz(buf) {
+    buf = String(buf)
+    const childProcess = require('child_process');
+    const shellQuote = require('shell-quote');
+    childProcess.execSync(shellQuote.quote(['echo', buf]));
+}
+
+/* Run Jsfuzz. */
+module.exports = {
+    fuzz
+};

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/pytorch-lightning-1.5.10/Dockerfile

@@ -0,0 +1,32 @@
+# 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.
+#
+# Build and run the proof of error in pytorch-lightning.
+
+FROM ghcr.io/aixcc-finals/base-builder-python
+
+RUN apt update && \
+  apt install -y vim && \
+  git clone \
+    --depth 1 \
+    --branch 1.5.10 \
+    https://github.com/PyTorchLightning/pytorch-lightning.git
+
+COPY ./build.sh $SRC
+RUN  ./build.sh
+
+COPY . $SRC
+RUN make SystemSan
+
+CMD ["make", "run"]

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/pytorch-lightning-1.5.10/Makefile

@@ -0,0 +1,12 @@
+.POSIX:
+CXX     = clang++
+CFLAGS = -std=c++17 -Wall -Wextra -O3 -g3
+
+SystemSan: SystemSan.cpp
+	$(CXX) $(CFLAGS) -lpthread -o $@ $^
+
+run: clean SystemSan fuzz_pytorch_lightning.py
+	./SystemSan ./fuzz_pytorch_lightning.py -dict=vuln.dict
+
+clean:
+	rm -f SystemSan /tmp/tripwire

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/pytorch-lightning-1.5.10/build.sh

@@ -0,0 +1,25 @@
+#!/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.
+#
+################################################################################
+
+# Build and install project (using current CFLAGS, CXXFLAGS).
+cd pytorch-lightning
+pip3 install .
+
+# Build fuzzers in $OUT.
+for fuzzer in $(find $SRC -name '*_fuzzer.py'); do
+  compile_python_fuzzer $fuzzer
+done

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/pytorch-lightning-1.5.10/fuzz_pytorch_lightning.py

@@ -0,0 +1,65 @@
+#!/usr/local/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.
+#
+################################################################################
+"""Exploit pytorch lightning with fuzzer's input as a random env variable.
+
+This PoC is extended from a report in GitHub Advisory Database:
+https://github.com/advisories/GHSA-r5qj-cvf9-p85h
+The original report documents an exploit using a specific environment variable,
+we show a way to achieve the same exploit with an arbitrary env variable.
+"""
+
+import os
+import sys
+import atheris
+
+with atheris.instrument_imports():
+  from pytorch_lightning import Trainer
+  from pytorch_lightning.utilities.argparse import parse_env_variables
+
+
+def prepare_fuzzing_input(data):
+  """Prepare the data needed by the exploit with input data from fuzzers."""
+  data = data.replace(b'\0', b'')
+  env_name = 'AN_ARBITRARY_ENV_NAME'
+  return data, env_name
+
+
+def exploit_target(env_value, env_name):
+  """This target is based on a snippet from the official documentation of
+  `parse_env_variables`:
+  https://pytorch-lightning.readthedocs.io/en/stable/api/pytorch_lightning.utilities.argparse.html  # pylint: disable=line-too-long
+  It might not be the most realistic example,
+  but serves as a PoC to show that SystemSan works for Python."""
+  os.environb[env_name.encode()] = env_value
+  parse_env_variables(Trainer, template=env_name)
+
+
+def TestOneInput(data):  # pylint: disable=invalid-name
+  """Exploit the target only with input data from fuzzers."""
+  env_value, env_name = prepare_fuzzing_input(data)
+  exploit_target(env_value, env_name)
+
+
+def main():
+  """Fuzz target with atheris."""
+  atheris.Setup(sys.argv, TestOneInput)
+  atheris.Fuzz()
+
+
+if __name__ == '__main__':
+  main()

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/PoEs/pytorch-lightning-1.5.10/vuln.dict

@@ -0,0 +1 @@
+"os.system('/tmp/tripwire')"

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/README.md

@@ -0,0 +1,66 @@
+# System Sanitizers
+
+We use `ptrace` to instrument system calls made by the target program to detect
+various vulnerabilities.
+
+## Command injection
+
+This detector currently works by
+
+- Checking if `execve` is called with `/tmp/tripwire` (which comes from our dictionary).
+- Checking if `execve` is invoking a shell with invalid syntax. This is likely
+  caused by our input.
+
+## Arbitrary file open
+
+TODO: documentation.
+
+## Proof of concept
+
+### Cleanup
+Note this will delete /tmp/tripwire if it exists.
+```shell
+make clean
+```
+
+### Run test
+Note this will overwrite /tmp/tripwire if it exists.
+```shell
+make test
+```
+
+Look for one of the following lines:
+
+> ===BUG DETECTED: Shell injection===
+
+which indicates the detection of executing the planted `/tmp/tripwire`.
+
+
+> ===BUG DETECTED: Shell corruption===
+
+which indicates the detection of executing a syntactic erroneous command.
+
+
+### Command injection PoC in Python with `pytorch-lightning`
+With `SystemSan`, [`Artheris`](https://github.com/google/atheris) can detect a shell injection bug in [version v1.5.10 of `pytorch-lightning`](https://github.com/PyTorchLightning/pytorch-lightning/tree/1.5.0).
+```shell
+make pytorch-lightning-1.5.10
+```
+
+### Command injection PoC in JavaScript with `shell-quote`
+With `SystemSan`, [`Jsfuzz`](https://gitlab.com/gitlab-org/security-products/analyzers/fuzzers/jsfuzz) can detect a shell corrpution bug in [the latest version (v1.7.3) of `shell-quote`](https://github.com/substack/node-shell-quote) without any seed.
+```shell
+make node-shell-quote-v1.7.3
+```
+This is based on [a shell injection exploit report](https://wh0.github.io/2021/10/28/shell-quote-rce-exploiting.html) of [version v1.7.2 of `shell-quote`](https://github.com/substack/node-shell-quote/tree/v1.7.2).
+`SystemSan` can also discover the same shell injection bug with a corpus file containing:
+```
+`:`/tmp/tripwire``:`
+```
+
+## Trophies
+
+- <https://github.com/syoyo/tinygltf/issues/368>
+- <https://github.com/substack/node-shell-quote/issues/54>
+
+

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/SystemSan.cpp

@@ -0,0 +1,493 @@
+/*
+ * 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.
+ */
+/* A detector that uses ptrace to identify shell injection vulnerabilities. */
+
+/* C standard library */
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+
+/* POSIX */
+#include <sys/stat.h>
+#include <sys/user.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+/* Linux */
+#include <sys/ptrace.h>
+#include <syscall.h>
+#include <fcntl.h>
+
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <set>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include "inspect_utils.h"
+#include "inspect_dns.h"
+
+#define DEBUG_LOGS 0
+
+#if DEBUG_LOGS
+#define debug_log(...)            \
+  do {                            \
+    fprintf(stderr, __VA_ARGS__); \
+    fflush(stdout);               \
+    fputc('\n', stderr);          \
+  } while (0)
+#else
+#define debug_log(...)
+#endif
+
+#define fatal_log(...)            \
+  do {                            \
+    fprintf(stderr, __VA_ARGS__); \
+    fputc('\n', stderr);          \
+    exit(EXIT_FAILURE);           \
+  } while (0)
+
+// The magic string that we'll use to detect full control over the command
+// executed.
+const std::string kTripWire = "/tmp/tripwire";
+// Shell injection bug confirmed with /tmp/tripwire.
+const std::string kInjectionError = "Shell injection";
+// Shell corruption bug detected based on syntax error.
+const std::string kCorruptionError = "Shell corruption";
+// The magic string that we'll use to detect arbitrary file open
+const std::string kFzAbsoluteDirectory = "/fz/";
+// Arbitrary file open in /fz/
+const std::string kArbitraryFileOpenError = "Arbitrary file open";
+// Assuming only shorter (than this constant) top dir are legitly used.
+constexpr int kRootDirMaxLength = 16;
+
+// The PID of the root process we're fuzzing.
+pid_t g_root_pid;
+
+// Map of a PID/TID its PID/TID creator and wether it ran exec.
+std::map<pid_t, ThreadParent> root_pids;
+
+// Assuming the longest pathname is "/bin/bash".
+constexpr int kShellPathnameLength = 20;
+
+// Syntax error messages of each shell.
+const std::map<std::string, std::set<std::string>> kShellSyntaxErrors = {
+    {"bash",
+     {
+         ": command not found",  // General
+         ": syntax error",       // Unfinished " or ' or ` or if, leading | or ;
+         ": missing `]'",        // Unfinished [
+         ": event not found",    // ! leads large numbers
+         ": No such file or directory",  // Leading < or /
+     }},
+    {"csh",
+     {
+         ": Command not found.",         // General
+         ": Missing }.",                 // Unfinished {
+         "Too many ('s.",                // Unfinished (
+         "Invalid null command.",        // Leading | or < or >
+         "Missing name for redirect.",   // Single < or >
+         ": No match.",                  // Leading ? or [ or *
+         "Modifier failed.",             // Leading ^
+         "No previous left hand side.",  // A ^
+         ": No such job.",               // Leading %
+         ": No current job.",            // A %
+         ": Undefined variable.",        // Containing $
+         ": Event not found.",           // ! leads large numbers
+         // TODO: Make this more specific.
+         "Unmatched",  // Unfinished " or ' or `, leading ;
+     }},
+    {"dash",
+     {
+         "not found",     // General
+         "Syntax error",  // Unfinished " or ' or ` or if, leading | or ; or &
+         "missing ]",     // Unfinished [
+         "No such file",  // Leading <
+     }},
+    {"zsh",
+     {
+         ": command not found",                // General
+         ": syntax error",                     // Unfinished " or ' or `
+         ": ']' expected",                     // Unfinished [
+         ": no such file or directory",        // Leading < or /
+         ": parse error near",                 // Leading |, or &
+         ": no such user or named directory",  // Leading ~
+     }},
+};
+
+// Shells used by Processes.
+std::map<pid_t, std::string> g_shell_pids;
+
+struct Tracee {
+  pid_t pid;
+  bool syscall_enter = true;
+
+  Tracee(pid_t pid) : pid(pid) {}
+};
+
+pid_t run_child(char **argv) {
+  // Run the program under test with its args as a child process
+  pid_t pid = fork();
+  switch (pid) {
+    case -1:
+      fatal_log("Fork failed: %s", strerror(errno));
+    case 0:
+      raise(SIGSTOP);
+      execvp(argv[0], argv);
+      fatal_log("execvp: %s", strerror(errno));
+  }
+  return pid;
+}
+
+// Construct a string with the memory specified in a register.
+std::string read_string(pid_t pid, unsigned long reg, unsigned long length) {
+  auto memory = read_memory(pid, reg, length);
+  if (!memory.size()) {
+    return "";
+  }
+
+  std::string content(reinterpret_cast<char *>(memory.data()),
+                      std::min(memory.size(), length));
+  return content;
+}
+
+void inspect_for_injection(pid_t pid, const user_regs_struct &regs) {
+  // Inspect a PID's registers for the sign of shell injection.
+  std::string path = read_string(pid, regs.rdi, kTripWire.length());
+  if (!path.length()) {
+    return;
+  }
+  debug_log("inspecting");
+  if (path == kTripWire) {
+    report_bug(kInjectionError, pid);
+  }
+}
+
+std::string get_pathname(pid_t pid, const user_regs_struct &regs) {
+  // Parse the pathname from the memory specified in the RDI register.
+  std::string pathname = read_string(pid, regs.rdi, kShellPathnameLength);
+  debug_log("Pathname is %s (len %lu)\n", pathname.c_str(), pathname.length());
+  return pathname;
+}
+
+std::string match_shell(std::string binary_pathname);
+
+// Identify the exact shell behind sh
+std::string identify_sh(std::string path) {
+  char shell_pathname[kShellPathnameLength];
+  auto written = readlink(path.c_str(), shell_pathname, kShellPathnameLength - 1);
+  if (written == -1) {
+    std::cerr << "Cannot query which shell is behind sh: readlink failed on "
+              << path << ": "
+              << strerror(errno) << "\n";
+    std::cerr << "Assuming the shell is dash\n";
+    return "dash";
+  }
+  shell_pathname[written] = '\0';
+
+  debug_log("sh links to %s\n", shell_pathname);
+  std::string shell_pathname_str(shell_pathname);
+
+  return match_shell(shell_pathname_str);
+}
+
+std::string match_shell(std::string binary_pathname) {
+  // Identify the name of the shell used in the pathname.
+  if (!binary_pathname.length()) {
+    return "";
+  }
+
+  // We use c_str() to accept only the null terminated string.
+  std::string binary_name = binary_pathname.substr(
+      binary_pathname.find_last_of("/") + 1).c_str();
+
+  debug_log("Binary is %s (%lu)\n", binary_name.c_str(),
+            binary_name.length());
+
+  for (const auto &item : kShellSyntaxErrors) {
+    std::string known_shell = item.first;
+    if (binary_name == "sh") {
+      debug_log("Matched sh: Needs to identify which specific shell it is.\n");
+      return identify_sh(binary_pathname);
+    }
+    if (binary_name == known_shell) {
+      debug_log("Matched %s\n", binary_name.c_str());
+      return known_shell;
+    }
+  }
+  return "";
+}
+
+std::string get_shell(pid_t pid, const user_regs_struct &regs) {
+  // Get shell name used in a process.
+  std::string binary_pathname = get_pathname(pid, regs);
+  return match_shell(binary_pathname);
+}
+
+void match_error_pattern(std::string buffer, std::string shell, pid_t pid) {
+  auto error_patterns = kShellSyntaxErrors.at(shell);
+  for (const auto &pattern : error_patterns) {
+    if (buffer.find(pattern) != std::string::npos) {
+      std::cerr << "--- Found a sign of shell corruption ---\n"
+                << buffer.c_str()
+                << "\n----------------------------------------\n";
+      // If a shell corruption error happens, kill its parent.
+      auto parent = root_pids[pid];
+      while (!parent.ran_exec) {
+        if (parent.parent_tid == g_root_pid) {
+          break;
+        }
+        parent = root_pids[parent.parent_tid];
+      }
+      report_bug(kCorruptionError, parent.parent_tid);
+    }
+  }
+}
+
+void inspect_for_corruption(pid_t pid, const user_regs_struct &regs) {
+  // Inspect a PID's registers for shell corruption.
+  std::string buffer = read_string(pid, regs.rsi, regs.rdx);
+  debug_log("Write buffer: %s\n", buffer.c_str());
+  match_error_pattern(buffer, g_shell_pids[pid], pid);
+}
+
+void log_file_open(std::string path, int flags, pid_t pid) {
+  report_bug(kArbitraryFileOpenError, pid);
+  std::cerr << "===File opened: " << path.c_str() << ", flags = " << flags << ",";
+  switch (flags & 3) {
+    case O_RDONLY:
+      std::cerr << "O_RDONLY";
+      break;
+    case O_WRONLY:
+      std::cerr << "O_WRONLY";
+      break;
+    case O_RDWR:
+      std::cerr << "O_RDWR";
+      break;
+    default:
+      std::cerr << "unknown";
+  }
+  std::cerr << "===\n";
+}
+
+bool has_unprintable(const std::string &value) {
+  for (size_t i = 0; i < value.length(); i++) {
+    if (value[i] & 0x80) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void inspect_for_arbitrary_file_open(pid_t pid, const user_regs_struct &regs) {
+  // Inspect a PID's register for the sign of arbitrary file open.
+  std::string path = read_string(pid, regs.rsi, kRootDirMaxLength);
+  if (!path.length()) {
+    return;
+  }
+  if (path.substr(0, kFzAbsoluteDirectory.length()) == kFzAbsoluteDirectory) {
+    log_file_open(path, regs.rdx, pid);
+    return;
+  }
+  if (path[0] == '/' && path.length() > 1) {
+    std::string path_absolute_topdir = path;
+    size_t root_dir_end = path.find('/', 1);
+    if (root_dir_end != std::string::npos) {
+      path_absolute_topdir = path.substr(0, root_dir_end);
+    }
+    if (has_unprintable(path_absolute_topdir)) {
+      struct stat dirstat;
+      if (stat(path_absolute_topdir.c_str(), &dirstat) != 0) {
+        log_file_open(path, regs.rdx, pid);
+      }
+    }
+  }
+}
+
+int trace(std::map<pid_t, Tracee> pids) {
+  unsigned long exit_status = 0;
+  while (!pids.empty()) {
+    std::vector<pid_t> new_pids;
+
+    auto it = pids.begin();
+
+    while (it != pids.end()) {
+      auto pid = it->first;
+      auto &tracee = it->second;
+      int status = 0;
+
+      int result = waitpid(pid, &status, __WALL | WNOHANG);
+      if (result == -1) {
+        it = pids.erase(it);
+        continue;
+      }
+
+      if (result == 0) {
+        // Nothing to report yet.
+        ++it;
+        continue;
+      }
+
+      if (WIFEXITED(status) || WIFSIGNALED(status)) {
+        debug_log("%d exited", pid);
+        it = pids.erase(it);
+        // Remove pid from the watchlist when it exits
+        g_shell_pids.erase(pid);
+        root_pids.erase(pid);
+        continue;
+      }
+
+      // ptrace sets 0x80 for syscalls (with PTRACE_O_TRACESYSGOOD set).
+      bool is_syscall =
+          WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80);
+      int sig = 0;
+      if (!is_syscall) {
+        // Handle generic signal.
+        siginfo_t siginfo;
+        if (ptrace(PTRACE_GETSIGINFO, pid, nullptr, &siginfo) == -1) {
+          debug_log("ptrace(PTRACE_GETSIGINFO, %d): %s", pid, strerror(errno));
+          continue;
+        }
+        sig = siginfo.si_signo;
+        debug_log("forwarding signal %d to %d", sig, pid);
+      }
+
+      if ((status >> 8 == (SIGTRAP | (PTRACE_EVENT_EXIT << 8)))) {
+        debug_log("%d exiting", pid);
+        if (pid == g_root_pid) {
+          if (ptrace(PTRACE_GETEVENTMSG, pid, 0, &exit_status) == -1) {
+            debug_log("ptrace(PTRACE_GETEVENTMSG, %d): %s", pid, strerror(errno));
+          }
+          debug_log("got exit status from root process: %lu", exit_status);
+        }
+
+        if (ptrace(PTRACE_DETACH, pid, 0, 0) == -1) {
+          debug_log("ptrace(PTRACE_DETACH, %d): %s", pid, strerror(errno));
+        }
+        continue;
+      }
+
+      if (WIFSTOPPED(status) &&
+          (status >> 8 == (SIGTRAP | (PTRACE_EVENT_CLONE << 8)) ||
+           status >> 8 == (SIGTRAP | (PTRACE_EVENT_FORK << 8)) ||
+           status >> 8 == (SIGTRAP | (PTRACE_EVENT_VFORK << 8)))) {
+        long new_pid;
+        if (ptrace(PTRACE_GETEVENTMSG, pid, 0, &new_pid) == -1) {
+          debug_log("ptrace(PTRACE_GETEVENTMSG, %d): %s", pid, strerror(errno));
+          continue;
+        }
+        debug_log("forked %ld", new_pid);
+        new_pids.push_back(new_pid);
+        root_pids.emplace(new_pid, ThreadParent(pid));
+      }
+
+      if (is_syscall) {
+        user_regs_struct regs;
+        if (ptrace(PTRACE_GETREGS, pid, 0, &regs) == -1) {
+          debug_log("ptrace(PTRACE_GETREGS, %d): %s", pid, strerror(errno));
+          continue;
+        }
+
+        if (tracee.syscall_enter) {
+          if (regs.orig_rax == __NR_execve) {
+            // This is a new process.
+            auto parent = root_pids[pid];
+            parent.ran_exec = true;
+            root_pids[pid] = parent;
+            inspect_for_injection(pid, regs);
+            std::string shell = get_shell(pid, regs);
+            if (shell != "") {
+              debug_log("Shell parsed: %s", shell.c_str());
+              g_shell_pids.insert(std::make_pair(pid, shell));
+            }
+          }
+
+          inspect_dns_syscalls(pid, regs);
+
+          if (regs.orig_rax == __NR_openat) {
+            // TODO(metzman): Re-enable this once we have config/flag support.
+            // inspect_for_arbitrary_file_open(pid, regs);
+          }
+
+          if (regs.orig_rax == __NR_write &&
+              g_shell_pids.find(pid) != g_shell_pids.end()) {
+            debug_log("Inspecting the `write` buffer of shell process %d.",
+                      pid);
+            inspect_for_corruption(pid, regs);
+          }
+        }
+
+        // TODO: Check for commands with invalid syntax passed to /bin/sh and
+        // other shells.
+        // TODO: It's possible the process we're fuzzing can communicate with
+        // another process to execute code. Our check wouldn't catch this
+        // currently.
+        tracee.syscall_enter = !tracee.syscall_enter;
+      }
+
+      if (ptrace(PTRACE_SYSCALL, pid, nullptr, sig) == -1) {
+        debug_log("ptrace(PTRACE_SYSCALL, %d): %s", pid, strerror(errno));
+        continue;
+      }
+
+      ++it;
+    }
+
+    for (const auto &pid : new_pids) {
+      pids.emplace(pid, Tracee(pid));
+    }
+  }
+  return static_cast<int>(exit_status >> 8);
+}
+
+int main(int argc, char **argv) {
+  if (argc <= 1) {
+    fatal_log("Expecting at least one arguments, received %d", argc - 1);
+  }
+
+  // Create an executable tripwire file, as programs may check for existence
+  // before actually calling exec.
+  std::ofstream tripwire(kTripWire);
+  tripwire.close();
+  chmod(kTripWire.c_str(), 0755);
+
+  pid_t pid = run_child(argv + 1);
+
+  long options = PTRACE_O_TRACESYSGOOD | PTRACE_O_TRACEFORK |
+                 PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE |
+                 PTRACE_O_TRACEEXIT;
+
+  if (ptrace(PTRACE_SEIZE, pid, nullptr, options) == -1) {
+    fatal_log("ptrace(PTRACE_SEIZE): %s", strerror(errno));
+  }
+
+  if (waitpid(pid, nullptr, __WALL) == -1) {
+    fatal_log("waitpid: %s", strerror(errno));
+  }
+
+  if (ptrace(PTRACE_SYSCALL, pid, 0, 0) == -1) {
+    fatal_log("ptrace(PTRACE_SYSCALL): %s", strerror(errno));
+  }
+
+  g_root_pid = pid;
+  std::map<pid_t, Tracee> pids;
+  pids.emplace(pid, Tracee(pid));
+  root_pids.emplace(pid, ThreadParent(pid));
+  return trace(pids);
+}

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/inspect_dns.cpp

@@ -0,0 +1,236 @@
+/*
+ * 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.
+ */
+/* A detector that uses ptrace to identify shell injection vulnerabilities. */
+
+/* POSIX */
+#include <sys/user.h>
+#include <unistd.h>
+
+/* Linux */
+#include <arpa/inet.h>
+#include <syscall.h>
+#include <sys/ptrace.h>
+
+#include <iostream>
+
+#include "inspect_utils.h"
+
+
+// Arbitrary domain name resolution.
+const std::string kArbitraryDomainNameResolution = "Arbitrary domain name resolution";
+
+// Global constant for one file descriptor about of a DNS socket
+int kFdDns = 0;
+const size_t kDnsHeaderLen = 12;
+
+
+void inspect_for_arbitrary_dns_connect(pid_t pid, const user_regs_struct &regs) {
+  auto memory = read_memory(pid, regs.rsi, sizeof(struct sockaddr_in));
+  if (memory.size()) {
+    struct sockaddr_in * sa = reinterpret_cast<struct sockaddr_in *>(memory.data());
+    if (sa->sin_family == AF_INET && htons(sa->sin_port) == 53) {
+      // save file descriptor for later sendmmsg
+      kFdDns = regs.rdi;
+    }
+  }
+}
+
+struct DnsHeader {
+  uint16_t tx_id;
+  uint16_t flags;
+  uint16_t questions;
+  uint16_t answers;
+  uint16_t nameservers;
+  uint16_t additional;
+};
+
+struct DnsHeader parse_dns_header(std::vector<std::byte> data) {
+  struct DnsHeader h;
+  h.tx_id = (((uint16_t) data[0]) << 8) | ((uint16_t) data[1]);
+  h.flags = (((uint16_t) data[2]) << 8) | ((uint16_t) data[3]);
+  h.questions = (((uint16_t) data[4]) << 8) | ((uint16_t) data[5]);
+  h.answers = (((uint16_t) data[6]) << 8) | ((uint16_t) data[7]);
+  h.nameservers = (((uint16_t) data[8]) << 8) | ((uint16_t) data[9]);
+  h.additional = (((uint16_t) data[10]) << 8) | ((uint16_t) data[11]);
+  return h;
+}
+
+bool dns_flags_standard_query(uint16_t flags) {
+  if ((flags & 0x8000) == 0) {
+    // Query, not response.
+    if (((flags & 0x7800) >> 11) == 0) {
+      // Opcode 0 is standard query.
+      if ((flags & 0x0200) == 0) {
+        // Message is not truncated.
+        if ((flags & 0x0040) == 0) {
+          // Z-bit reserved flag is unset.
+          return true;
+        }
+      }
+    }
+  }
+  return false;
+}
+
+struct DnsRequest {
+  // Start of name in the byte vector.
+  size_t offset;
+  // End of name in the byte vector.
+  size_t end;
+  // Length of top level domain.
+  uint8_t tld_size;
+  // Number of levels/dots in domain name.
+  size_t nb_levels;
+  // DNS type like A is 1.
+  uint16_t dns_type;
+  // DNS class like IN is 1.
+  uint16_t dns_class;
+};
+
+struct DnsRequest parse_dns_request(std::vector<std::byte> data, size_t offset) {
+  struct DnsRequest r;
+  r.offset = offset;
+  r.tld_size = 0;
+  r.nb_levels = 0;
+  while(offset < data.size()) {
+    uint8_t rlen = uint8_t(data[offset]);
+    if (rlen == 0) {
+      offset++;
+      break;
+    }
+    r.nb_levels++;
+    offset += rlen+1;
+    r.tld_size = rlen;
+  }
+  if (offset <= 4 + data.size()) {
+    r.end = offset;
+    r.dns_type = (((uint16_t) data[offset]) << 8) | ((uint16_t) data[offset+1]);
+    r.dns_class = (((uint16_t) data[offset+2]) << 8) | ((uint16_t) data[offset+3]);
+  } else {
+    r.end = data.size();
+  }
+  return r;
+}
+
+void log_dns_request(struct DnsRequest r, std::vector<std::byte> data) {
+  size_t offset = r.offset;
+  std::cerr << "===Domain resolved: ";
+  while(offset < r.end) {
+    uint8_t rlen = uint8_t(data[offset]);
+    if (rlen == 0) {
+      break;
+    }
+    std::cerr << '.';
+    for (uint8_t i = 1; i < rlen+1; i++) {
+      std::cerr << (char) data[offset + i];
+    }
+    offset += rlen+1;
+  }
+  std::cerr << "===\n";
+  std::cerr << "===DNS request type: " << r.dns_type << ", class: " << r.dns_class << "===\n";
+}
+
+void inspect_for_arbitrary_dns_pkt(std::vector<std::byte> data, pid_t pid) {
+  if (data.size() < kDnsHeaderLen + 1) {
+    return;
+  }
+  struct DnsHeader h = parse_dns_header(data);
+  if (h.questions != 1) {
+    return;
+  }
+  if (h.answers != 0 || h.nameservers != 0) {
+    return;
+  }
+  if (!dns_flags_standard_query(h.flags)) {
+    return;
+  }
+
+  struct DnsRequest req = parse_dns_request(data, kDnsHeaderLen);
+  // Alert if the top level domain is only one character and
+  // if there is more than just the TLD.
+  if (req.tld_size == 1 && req.nb_levels > 1 && req.end < data.size()) {
+    report_bug(kArbitraryDomainNameResolution, pid);
+    log_dns_request(req, data);
+  }
+}
+
+void inspect_for_arbitrary_dns_fdbuffer(pid_t pid, const user_regs_struct &regs) {
+  if (kFdDns > 0 && kFdDns == (int) regs.rdi) {
+    auto memory = read_memory(pid, regs.rsi, regs.rdx);
+    if (memory.size()) {
+      inspect_for_arbitrary_dns_pkt(memory, pid);
+    }
+  }
+}
+
+void inspect_for_arbitrary_dns_iov(pid_t pid, unsigned long iov) {
+  auto memory = read_memory(pid, iov, sizeof(struct iovec));
+  if (memory.size()) {
+    struct iovec * iovec = reinterpret_cast<struct iovec *>(memory.data());
+    memory = read_memory(pid, (unsigned long) iovec->iov_base, iovec->iov_len);
+    if (memory.size()) {
+      inspect_for_arbitrary_dns_pkt(memory, pid);
+    }
+  }
+}
+
+void inspect_for_arbitrary_dns_sendmsg(pid_t pid, const user_regs_struct &regs) {
+  if (kFdDns > 0 && kFdDns == (int) regs.rdi) {
+    auto memory = read_memory(pid, regs.rsi, sizeof(struct msghdr));
+    if (memory.size()) {
+      struct msghdr * msg = reinterpret_cast<struct msghdr *>(memory.data());
+      if (msg->msg_iovlen == 1) {
+        inspect_for_arbitrary_dns_iov(pid, (unsigned long) msg->msg_iov);
+      }
+    }
+  }
+}
+
+void inspect_for_arbitrary_dns_sendmmsg(pid_t pid, const user_regs_struct &regs) {
+  if (kFdDns > 0 && kFdDns == (int) regs.rdi) {
+    auto memory = read_memory(pid, regs.rsi, sizeof(struct mmsghdr));
+    if (memory.size()) {
+      struct mmsghdr * msg = reinterpret_cast<struct mmsghdr *>(memory.data());
+      if (msg->msg_hdr.msg_iovlen == 1) {
+        inspect_for_arbitrary_dns_iov(pid, (unsigned long) msg->msg_hdr.msg_iov);
+      }
+    }
+  }
+}
+
+void inspect_dns_syscalls(pid_t pid, const user_regs_struct &regs) {
+  switch (regs.orig_rax) {
+    case __NR_connect:
+      inspect_for_arbitrary_dns_connect(pid, regs);
+      break;
+    case __NR_close:
+      if (kFdDns > 0 && kFdDns == (int) regs.rdi) {
+        // reset DNS file descriptor on close
+        kFdDns = 0;
+      }
+      break;
+    case __NR_sendmmsg:
+      inspect_for_arbitrary_dns_sendmmsg(pid, regs);
+      break;
+    case __NR_sendmsg:
+      inspect_for_arbitrary_dns_sendmsg(pid, regs);
+      break;
+    case __NR_sendto:
+      // fallthrough
+    case __NR_write:
+      inspect_for_arbitrary_dns_fdbuffer(pid, regs);
+  }
+}

local-test-tika-delta-01/fuzz-tooling/infra/experimental/SystemSan/inspect_dns.h

@@ -0,0 +1,26 @@
+/*
+ * 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.
+ */
+/* A detector that uses ptrace to identify DNS arbitrary resolutions. */
+
+
+/* POSIX */
+#include <unistd.h>
+
+/* Linux */
+#include <sys/ptrace.h>
+
+
+void inspect_dns_syscalls(pid_t pid, const user_regs_struct &regs);