Add files using upload-large-folder tool

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder-ruby/ruzzy-build

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash -e
+# Copyright 2024 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.
+#
+################################################################################
+
+fuzz_target=$(basename "$1")
+echo "BASENAME: $fuzz_target ---"
+harness_sh=${fuzz_target::-3}
+
+cp $1 $OUT/$fuzz_target
+
+echo """#!/usr/bin/env bash
+
+ruzzy $fuzz_target
+""" > $OUT/$harness_sh
+chmod +x $OUT/$harness_sh

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/README.md

@@ -0,0 +1,83 @@
+# base-builder
+> Abstract base image for project builders.
+
+Every project image supports multiple commands that can be invoked through docker after the image is built:
+
+<pre>
+docker run --rm -ti gcr.io/oss-fuzz/<b><i>$project</i></b> <i>&lt;command&gt;</i> <i>&lt;arguments...&gt;</i>
+</pre>
+
+# Supported Commands
+
+| Command | Description |
+|---------|-------------|
+| `compile` (default) | build all fuzz targets
+| `/bin/bash` | drop into shell, execute `compile` script to start build.
+
+# Build Configuration
+
+A single build image can build same set of fuzzers in many configurations.
+The configuration is picked through one or more environment variables.
+
+| Env Variable     | Description
+| -------------    | --------
+| `$SANITIZER ("address")` | Specifies predefined sanitizer configuration to use. `address` or `memory` or `undefined`.
+| `$SANITIZER_FLAGS` | Specify compiler sanitizer flags directly. Overrides `$SANITIZER`.
+| `$COVERAGE_FLAGS` | Specify compiler flags to use for fuzzer feedback coverage.
+| `$BUILD_UID` | User id to use while building fuzzers.
+
+## Examples
+
+- *building sqlite3 fuzzer with UBSan (`SANITIZER=undefined`):*
+
+
+<pre>
+docker run --rm -ti -e <i>SANITIZER</i>=<i>undefined</i> gcr.io/oss-fuzz/sqlite3
+</pre>
+
+
+# Image Files Layout
+
+| Location|Env| Description |
+|---------| -------- | ----------  |
+| `/out/` | `$OUT`         | Directory to store build artifacts (fuzz targets, dictionaries, options files, seed corpus archives). |
+| `/src/` | `$SRC`         | Directory to checkout source files |
+| `/work/`| `$WORK`        | Directory for storing intermediate files |
+| `/usr/lib/libFuzzingEngine.a` | `$LIB_FUZZING_ENGINE` | Location of prebuilt fuzzing engine library (e.g. libFuzzer) that needs to be linked with all fuzz targets.
+
+While files layout is fixed within a container, the environment variables are
+provided to be able to write retargetable scripts.
+
+
+## Compiler Flags
+
+You *must* use special compiler flags to build your project and fuzz targets.
+These flags are provided in following environment variables:
+
+| Env Variable    | Description
+| -------------   | --------
+| `$CC`           | The C compiler binary.
+| `$CXX`, `$CCC`  | The C++ compiler binary.
+| `$CFLAGS`       | C compiler flags.
+| `$CXXFLAGS`     | C++ compiler flags.
+
+Most well-crafted build scripts will automatically use these variables. If not,
+pass them manually to the build tool.
+
+
+# Child Image Interface
+
+## Sources
+
+Child image has to checkout all sources that it needs to compile fuzz targets into
+`$SRC` directory. When the image is executed, a directory could be mounted on top
+of these with local checkouts using
+`docker run -v $HOME/my_project:/src/my_project ...`.
+
+## Other Required Files
+
+Following files have to be added by child images:
+
+| File Location   | Description |
+| -------------   | ----------- |
+| `$SRC/build.sh` | build script to build the project and its fuzz targets |

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/bisect_clang.py

@@ -0,0 +1,227 @@
+#!/usr/bin/env python3
+# Copyright 2019 Google Inc.
+#
+# 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.
+#
+################################################################################
+"""Use git bisect to find the Clang/LLVM commit causing a regression."""
+
+import logging
+import os
+import re
+import shutil
+import subprocess
+import sys
+
+
+def execute(command, *args, expect_zero=True, **kwargs):
+  """Execute |command| and return the returncode, stdout and stderr."""
+  kwargs['stdout'] = subprocess.PIPE
+  kwargs['stderr'] = subprocess.PIPE
+  logging.debug('Running command: "%s"', str(command))
+  process = subprocess.Popen(command, *args, **kwargs)
+  stdout, stderr = process.communicate()
+  stdout = stdout.decode('utf-8')
+  stderr = stderr.decode('utf-8')
+  retcode = process.returncode
+  logging.info('Command: "%s" returned: %d.\nStdout: %s.\nStderr: %s',
+               str(command), retcode, stdout, stderr)
+  if expect_zero and retcode != 0:
+    raise subprocess.CalledProcessError(retcode, command)
+  return retcode, stdout, stderr
+
+
+def search_bisect_output(output):
+  """Search |output| for a message indicating the culprit commit has been
+  found."""
+  # TODO(metzman): Is it necessary to look for "good"?
+  culprit_regex = re.compile('([a-z0-9]{40}) is the first (good|bad) commit')
+  match = re.match(culprit_regex, output)
+  return match.group(1) if match is not None else None
+
+
+class GitRepo:
+  """Class for executing commmands on a git repo."""
+
+  def __init__(self, repo_dir):
+    self.repo_dir = repo_dir
+
+  def do_command(self, git_subcommand):
+    """Execute a |git_subcommand| (a list of strings)."""
+    command = ['git', '-C', self.repo_dir] + git_subcommand
+    return execute(command)
+
+  def test_commit(self, test_command):
+    """Build LLVM at the currently checkedout commit, then run |test_command|.
+    If returncode is 0 run 'git bisect good' otherwise return 'git bisect bad'.
+    Return None if bisect didn't finish yet. Return the culprit commit if it
+    does."""
+    build_clang(self.repo_dir)
+    retcode, _, _ = execute(test_command, shell=True, expect_zero=False)
+    if retcode == 0:
+      retcode, stdout, _ = self.do_bisect_command('good')
+    else:
+      retcode, stdout, _ = self.do_bisect_command('bad')
+    return search_bisect_output(stdout)
+
+  def bisect(self, good_commit, bad_commit, test_command):
+    """Do git bisect assuming |good_commit| is good, |bad_commit| is bad and
+    |test_command| is an oracle. Return the culprit commit."""
+    self.bisect_start(good_commit, bad_commit, test_command)
+    result = self.test_commit(test_command)
+    while result is None:
+      result = self.test_commit(test_command)
+    return result
+
+  def bisect_start(self, good_commit, bad_commit, test_command):
+    """Start doing git bisect."""
+    self.do_bisect_command('start')
+    # Do bad commit first since it is more likely to be recent.
+    self.test_start_commit(bad_commit, 'bad', test_command)
+    self.test_start_commit(good_commit, 'good', test_command)
+
+  def do_bisect_command(self, subcommand):
+    """Execute a git bisect |subcommand| (string) and return the result."""
+    return self.do_command(['bisect', subcommand])
+
+  def test_start_commit(self, commit, label, test_command):
+    """Use |test_command| to test the first good or bad |commit| (depending on
+    |label|)."""
+    assert label in ('good', 'bad'), label
+    self.do_command(['checkout', commit])
+    build_clang(self.repo_dir)
+    retcode, _, _ = execute(test_command, shell=True, expect_zero=False)
+    if label == 'good' and retcode != 0:
+      raise BisectError('Test command "%s" returns %d on first good commit %s' %
+                        (test_command, retcode, commit))
+    if label == 'bad' and retcode == 0:
+      raise BisectError('Test command "%s" returns %d on first bad commit %s' %
+                        (test_command, retcode, commit))
+
+    self.do_bisect_command(label)
+
+
+class BisectError(Exception):
+  """Error that was encountered during bisection."""
+
+
+def get_clang_build_env():
+  """Get an environment for building Clang."""
+  env = os.environ.copy()
+  for variable in ['CXXFLAGS', 'CFLAGS']:
+    if variable in env:
+      del env[variable]
+  return env
+
+
+def install_clang_build_deps():
+  """Instal dependencies necessary to build clang."""
+  execute([
+      'apt-get', 'install', '-y', 'build-essential', 'make', 'cmake',
+      'ninja-build', 'git', 'subversion', 'g++-multilib'
+  ])
+
+
+def clone_with_retries(repo, local_path, num_retries=10):
+  """Clone |repo| to |local_path| if it doesn't exist already. Try up to
+  |num_retries| times. Return False if unable to checkout."""
+  if os.path.isdir(local_path):
+    return
+  for _ in range(num_retries):
+    if os.path.isdir(local_path):
+      shutil.rmtree(local_path)
+    retcode, _, _ = execute(['git', 'clone', repo, local_path],
+                            expect_zero=False)
+    if retcode == 0:
+      return
+  raise Exception('Could not checkout %s.' % repo)
+
+
+def get_clang_target_arch():
+  """Get target architecture we want clang to target when we build it."""
+  _, arch, _ = execute(['uname', '-m'])
+  if 'x86_64' in arch:
+    return 'X86'
+  if 'aarch64' in arch:
+    return 'AArch64'
+  raise Exception('Unsupported target: %s.' % arch)
+
+
+def prepare_build(llvm_project_path):
+  """Prepare to build clang."""
+  llvm_build_dir = os.path.join(os.getenv('WORK'), 'llvm-build')
+  if not os.path.exists(llvm_build_dir):
+    os.mkdir(llvm_build_dir)
+  execute([
+      'cmake', '-G', 'Ninja', '-DLIBCXX_ENABLE_SHARED=OFF',
+      '-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON', '-DLIBCXXABI_ENABLE_SHARED=OFF',
+      '-DCMAKE_BUILD_TYPE=Release',
+      '-DLLVM_ENABLE_PROJECTS=libcxx;libcxxabi;compiler-rt;clang',
+      '-DLLVM_TARGETS_TO_BUILD=' + get_clang_target_arch(),
+      os.path.join(llvm_project_path, 'llvm')
+  ],
+          env=get_clang_build_env(),
+          cwd=llvm_build_dir)
+  return llvm_build_dir
+
+
+def build_clang(llvm_project_path):
+  """Checkout, build and install Clang."""
+  # TODO(metzman): Merge Python checkout and build code with
+  # checkout_build_install_llvm.sh.
+  # TODO(metzman): Look into speeding this process using ccache.
+  # TODO(metzman): Make this program capable of handling MSAN and i386 Clang
+  # regressions.
+  llvm_build_dir = prepare_build(llvm_project_path)
+  execute(['ninja', '-C', llvm_build_dir, 'install'], env=get_clang_build_env())
+
+
+def find_culprit_commit(test_command, good_commit, bad_commit):
+  """Returns the culprit LLVM commit that introduced a bug revealed by running
+  |test_command|. Uses git bisect and treats |good_commit| as the first latest
+   known good commit and |bad_commit| as the first known bad commit."""
+  llvm_project_path = os.path.join(os.getenv('SRC'), 'llvm-project')
+  clone_with_retries('https://github.com/llvm/llvm-project.git',
+                     llvm_project_path)
+  git_repo = GitRepo(llvm_project_path)
+  result = git_repo.bisect(good_commit, bad_commit, test_command)
+  print('Culprit commit', result)
+  return result
+
+
+def main():
+  # pylint: disable=line-too-long
+  """Finds the culprit LLVM commit that introduced a clang regression.
+  Can be tested using this command in a libsodium shell:
+  python3 bisect_clang.py "cd /src/libsodium; make clean; cd -; compile && /out/secret_key_auth_fuzzer -runs=100" \
+                          f7e52fbdb5a7af8ea0808e98458b497125a5eca1 \
+                          8288453f6aac05080b751b680455349e09d49825
+  """
+  # pylint: enable=line-too-long
+  # TODO(metzman): Check CFLAGS for things like -fsanitize=fuzzer-no-link.
+  # TODO(metzman): Allow test_command to be optional and for just build.sh to be
+  # used instead.
+  test_command = sys.argv[1]
+  # TODO(metzman): Add in more automation so that the script can automatically
+  # determine the commits used in last Clang roll.
+  good_commit = sys.argv[2]
+  bad_commit = sys.argv[3]
+  # TODO(metzman): Make verbosity configurable.
+  logging.getLogger().setLevel(logging.DEBUG)
+  install_clang_build_deps()
+  find_culprit_commit(test_command, good_commit, bad_commit)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/build_jcc.bash

@@ -0,0 +1,25 @@
+#!/bin/bash -eu
+#
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+go build jcc.go
+go build jcc2.go
+gsutil cp jcc gs://clusterfuzz-builds/jcc/clang++-jcc
+gsutil cp jcc gs://clusterfuzz-builds/jcc/clang-jcc
+
+gsutil cp jcc2 gs://clusterfuzz-builds/jcc/clang++-jcc2
+gsutil cp jcc2 gs://clusterfuzz-builds/jcc/clang-jcc2

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/jcc2.go

@@ -0,0 +1,401 @@
+// Copyright 2024 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.
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/fs"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+var MaxMissingHeaderFiles = 10
+var CppifyHeadersMagicString = "\n/* JCCCppifyHeadersMagicString */\n"
+
+func CopyFile(src string, dst string) {
+	contents, err := ioutil.ReadFile(src)
+	if err != nil {
+		panic(err)
+	}
+	err = ioutil.WriteFile(dst, contents, 0644)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func TryFixCCompilation(cmdline []string) ([]string, int, string, string) {
+	var newFile string = ""
+	for i, arg := range cmdline {
+		if !strings.HasSuffix(arg, ".c") {
+			continue
+		}
+		if _, err := os.Stat(arg); errors.Is(err, os.ErrNotExist) {
+			continue
+		}
+		newFile = strings.TrimSuffix(arg, ".c")
+		newFile += ".cpp"
+		CopyFile(arg, newFile)
+		CppifyHeaderIncludesFromFile(newFile)
+		cmdline[i] = newFile
+		break
+	}
+	if newFile == "" {
+		return []string{}, 1, "", ""
+	}
+	cppBin := "clang++"
+	newCmdline := []string{"-stdlib=libc++"}
+	newCmdline = append(cmdline, newCmdline...)
+	newFullArgs := append([]string{cppBin}, newCmdline...)
+
+	retcode, out, err := Compile(cppBin, newCmdline)
+	if retcode == 0 {
+		return newFullArgs, retcode, out, err
+	}
+	correctedCmdline, corrected, _ := CorrectMissingHeaders(cppBin, newCmdline)
+	if corrected {
+		return append([]string{cppBin}, correctedCmdline...), 0, "", ""
+	}
+	return newFullArgs, retcode, out, err
+}
+
+func ExtractMissingHeader(compilerOutput string) (string, bool) {
+	r := regexp.MustCompile(`fatal error: ['|<](?P<header>[a-zA-z0-9\/\.]+)['|>] file not found`)
+	matches := r.FindStringSubmatch(compilerOutput)
+	if len(matches) == 0 {
+		return "", false
+	}
+	return matches[1], true
+}
+
+func ReplaceMissingHeaderInFile(srcFilename, curHeader, replacementHeader string) error {
+	srcFile, err := os.Open(srcFilename)
+	if err != nil {
+		return err
+	}
+	srcBytes, err := ioutil.ReadAll(srcFile)
+	if err != nil {
+		return err
+	}
+	src := string(srcBytes)
+	newSrc := ReplaceMissingHeader(src, curHeader, replacementHeader)
+	b := []byte(newSrc)
+	err = ioutil.WriteFile(srcFilename, b, 0644)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func ReplaceMissingHeader(src, curHeader, replacementHeader string) string {
+	re := regexp.MustCompile(`#include ["|<]` + curHeader + `["|>]\n`)
+	replacement := "#include \"" + replacementHeader + "\"\n"
+	return re.ReplaceAllString(src, replacement)
+}
+
+func GetHeaderCorrectedFilename(compilerErr string) (string, string, bool) {
+	re := regexp.MustCompile(`(?P<buggy>[a-z\/\-\_0-9A-z\.]+):.* fatal error: .* file not found`)
+	matches := re.FindStringSubmatch(compilerErr)
+	if len(matches) < 2 {
+		return "", "", false
+	}
+	oldFilename := matches[1]
+	base := filepath.Base(oldFilename)
+	root := filepath.Dir(oldFilename)
+	newFilename := root + "/jcc-corrected-" + base
+	return oldFilename, newFilename, true
+}
+
+func GetHeaderCorrectedCmd(cmd []string, compilerErr string) ([]string, string, error) {
+	oldFilename, newFilename, success := GetHeaderCorrectedFilename(compilerErr)
+	if !success {
+		return cmd, "", errors.New("Couldn't find buggy file")
+	}
+	// Make new cmd.
+	newCmd := make([]string, len(cmd))
+	for i, part := range cmd {
+		newCmd[i] = part
+	}
+	found := false
+	for i, filename := range newCmd {
+		if filename == oldFilename {
+			newCmd[i] = newFilename
+			found = true
+			break
+		}
+	}
+	CopyFile(oldFilename, newFilename)
+	if found {
+		return newCmd, newFilename, nil
+	}
+	return cmd, "", errors.New("Couldn't find file")
+}
+
+func CorrectMissingHeaders(bin string, cmd []string) ([]string, bool, error) {
+
+	_, _, stderr := Compile(bin, cmd)
+	cmd, correctedFilename, err := GetHeaderCorrectedCmd(cmd, stderr)
+	if err != nil {
+		return cmd, false, err
+	}
+	for i := 0; i < MaxMissingHeaderFiles; i++ {
+		fixed, hasBrokenHeaders := TryCompileAndFixHeadersOnce(bin, cmd, correctedFilename)
+		if fixed {
+			return cmd, true, nil
+		}
+		if !hasBrokenHeaders {
+			return cmd, false, nil
+		}
+	}
+	return cmd, false, nil
+}
+
+func ExecBuildCommand(bin string, args []string) (int, string, string) {
+	// Executes the original command.
+	cmd := exec.Command(bin, args...)
+	var outb, errb bytes.Buffer
+	cmd.Stdout = &outb
+	cmd.Stderr = &errb
+	cmd.Stdin = os.Stdin
+	cmd.Run()
+	return cmd.ProcessState.ExitCode(), outb.String(), errb.String()
+}
+
+func Compile(bin string, args []string) (int, string, string) {
+	// Run the actual command.
+	return ExecBuildCommand(bin, args)
+}
+
+func TryCompileAndFixHeadersOnce(bin string, cmd []string, filename string) (fixed, hasBrokenHeaders bool) {
+	retcode, _, err := Compile(bin, cmd)
+	if retcode == 0 {
+		fixed = true
+		hasBrokenHeaders = false
+		return
+	}
+	missingHeader, isMissing := ExtractMissingHeader(err)
+	if !isMissing {
+		fixed = false
+		hasBrokenHeaders = false
+		return
+	}
+
+	newHeaderPath, found := FindMissingHeader(missingHeader)
+	if !found {
+		fixed = false
+		hasBrokenHeaders = true
+		return false, true
+	}
+	ReplaceMissingHeaderInFile(filename, missingHeader, newHeaderPath)
+	return false, true
+}
+
+func FindMissingHeader(missingHeader string) (string, bool) {
+	envVar := "JCC_MISSING_HEADER_SEARCH_PATH"
+	var searchPath string
+	searchPath, exists := os.LookupEnv(envVar)
+	if !exists {
+		searchPath = "/src"
+	}
+	searchPath, _ = filepath.Abs(searchPath)
+	var headerLocation string
+	missingHeader = "/" + missingHeader
+	find := func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() {
+			return nil
+		}
+		if strings.HasSuffix(path, missingHeader) {
+			headerLocation = path
+			return nil
+		}
+		return nil
+	}
+	filepath.WalkDir(searchPath, find)
+	if headerLocation == "" {
+		return "", false
+	}
+	return headerLocation, true
+}
+
+func CppifyHeaderIncludesFromFile(srcFile string) error {
+	contentsBytes, err := ioutil.ReadFile(srcFile)
+	if err != nil {
+		return err
+	}
+	contents := string(contentsBytes[:])
+	contents, err = CppifyHeaderIncludes(contents)
+	if err != nil {
+		return err
+	}
+	b := []byte(contents)
+	err = ioutil.WriteFile(srcFile, b, 0644)
+	return err
+}
+
+func CppifyHeaderIncludes(contents string) (string, error) {
+	shouldCppify, exists := os.LookupEnv("JCC_CPPIFY_PROJECT_HEADERS")
+	if !exists || strings.Compare(shouldCppify, "0") == 0 {
+		return contents, nil
+	}
+	if strings.Contains(contents, CppifyHeadersMagicString) {
+		return contents, nil
+	}
+	re := regexp.MustCompile(`\#include \"(?P<header>.+)\"\n`)
+	matches := re.FindAllStringSubmatch(contents, -1)
+	if len(matches) == 0 {
+		return "", nil // !!!
+	}
+	for i, match := range matches {
+		if i == 0 {
+			// So we don't cppify twice.
+			contents += CppifyHeadersMagicString
+		}
+		oldStr := match[0]
+		replacement := "extern \"C\" {\n#include \"" + match[1] + "\"\n}\n"
+		contents = strings.Replace(contents, oldStr, replacement, 1)
+		if strings.Compare(contents, "") == 0 {
+			panic("Failed to replace")
+		}
+	}
+	return contents, nil
+}
+
+func AppendStringToFile(filepath, new_content string) error {
+	// Appends |new_content| to the content of |filepath|.
+	file, err := os.OpenFile(filepath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	_, err = file.WriteString(new_content)
+	return err
+}
+
+func WriteStdErrOut(args []string, outstr string, errstr string) {
+	// Prints |outstr| to stdout, prints |errstr| to stderr, and saves |errstr| to err.log.
+	fmt.Print(outstr)
+	fmt.Fprint(os.Stderr, errstr)
+	// Record what compile args produced the error and the error itself in log file.
+	AppendStringToFile("/workspace/err.log", fmt.Sprintf("%s\n", args)+errstr)
+}
+
+func main() {
+	f, err := os.OpenFile("/tmp/jcc.log", os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		log.Println(err)
+	}
+	defer f.Close()
+	if _, err := f.WriteString(fmt.Sprintf("%s\n", os.Args)); err != nil {
+		log.Println(err)
+	}
+
+	args := os.Args[1:]
+	if args[0] == "unfreeze" {
+		fmt.Println("unfreeze")
+		unfreeze()
+	}
+	basename := filepath.Base(os.Args[0])
+	isCPP := basename == "clang++-jcc"
+	newArgs := append(args, "-w")
+
+	var bin string
+	if isCPP {
+		bin = "clang++"
+		newArgs = append(args, "-stdlib=libc++")
+	} else {
+		bin = "clang"
+	}
+	fullCmdArgs := append([]string{bin}, newArgs...)
+	if IsCompilingTarget(fullCmdArgs) {
+		WriteTargetArgsAndCommitImage(fullCmdArgs)
+		os.Exit(0)
+	}
+	retcode, out, errstr := Compile(bin, newArgs)
+	WriteStdErrOut(fullCmdArgs, out, errstr)
+	os.Exit(retcode)
+}
+
+type BuildCommand struct {
+	CWD string   `json:"CWD"`
+	CMD []string `json:"CMD"`
+}
+
+func WriteTargetArgsAndCommitImage(cmdline []string) {
+	log.Println("WRITE COMMAND")
+	f, _ := os.OpenFile("/out/statefile.json", os.O_CREATE|os.O_WRONLY, 0644)
+	wd, _ := os.Getwd()
+	buildcmd := BuildCommand{
+		CWD: wd,
+		CMD: cmdline,
+	}
+	jsonData, _ := json.Marshal(buildcmd)
+	f.Write(jsonData)
+	f.Close()
+	hostname, _ := os.Hostname()
+	dockerArgs := []string{"commit", hostname, "frozen"}
+	cmd := exec.Command("docker", dockerArgs...)
+	var outb, errb bytes.Buffer
+	cmd.Stdout = &outb
+	cmd.Stderr = &errb
+	cmd.Stdin = os.Stdin
+	cmd.Run()
+	fmt.Println(outb.String(), errb.String())
+	fmt.Println("COMMIT IMAGE")
+}
+
+func IsCompilingTarget(cmdline []string) bool {
+	for _, arg := range cmdline {
+		// This can fail if people do crazy things they aren't supposed
+		// to such as using some other means to link in libFuzzer.
+		if arg == "-fsanitize=fuzzer" {
+			return true
+		}
+		if arg == "-lFuzzingEngine" {
+			return true
+		}
+	}
+	return false
+}
+
+func parseCommand(command string) (string, []string) {
+	args := strings.Fields(command)
+	commandBin := args[0]
+	commandArgs := args[1:]
+	return commandBin, commandArgs
+}
+
+func unfreeze() {
+	content, err := ioutil.ReadFile("/out/statefile.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+	var command BuildCommand
+	json.Unmarshal(content, &command)
+	bin, args := parseCommand(strings.Join(command.CMD, " "))
+	os.Chdir(command.CWD)
+	ExecBuildCommand(bin, args)
+	os.Exit(0)
+}

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/jcc_test.go

@@ -0,0 +1,186 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestExtractMissingHeader(t *testing.T) {
+	missingHeaderMessage := `path/to/file.cpp:8:10: fatal error: 'missingheader.h' file not found
+
+	#include "missingheader.h"
+
+		^~~~~~~~~~~~
+
+	1 error generated.
+	`
+
+	res, _ := ExtractMissingHeader(missingHeaderMessage)
+	expected := "missingheader.h"
+	if strings.Compare(res, expected) != 0 {
+		t.Errorf("Got: %s. Expected: %s.", res, expected)
+	}
+}
+
+func TestGetHeaderCorrectedFilename(t *testing.T) {
+	missingHeaderMessage := `path/to/file.cpp:8:10: fatal error: 'missingheader.h' file not found
+
+	#include "missingheader.h"
+
+		^~~~~~~~~~~~
+
+	1 error generated.
+	`
+	_, correctedFilename, _ := GetHeaderCorrectedFilename(missingHeaderMessage)
+	expected := "path/to/jcc-corrected-file.cpp"
+	if strings.Compare(correctedFilename, expected) != 0 {
+		t.Errorf("Got: %s. Expected: %s.", correctedFilename, expected)
+	}
+}
+
+func TestFindMissingHeader(t *testing.T) {
+	pwd, _ := os.Getwd()
+	t.Setenv("JCC_MISSING_HEADER_SEARCH_PATH", pwd)
+
+	location, _ := FindMissingHeader("header.h")
+	expected := pwd + "/testdata/path/to/header.h"
+	if strings.Compare(location, expected) != 0 {
+		t.Errorf("Got: %s. Expected: %s.", location, expected)
+	}
+}
+
+func TestCorrectMissingHeaders(t *testing.T) {
+	pwd, _ := os.Getwd()
+	t.Setenv("JCC_MISSING_HEADER_SEARCH_PATH", pwd)
+	cfile := pwd + "/testdata/cfile.c"
+	cmd := [4]string{"-fsanitize=address", cfile, "-o", "/tmp/blah"}
+	res, err := CorrectMissingHeaders("clang", cmd[:])
+	if !res {
+		fmt.Println(err)
+		t.Errorf("Expected successful compilation")
+	}
+}
+
+func TestGetHeaderCorrectedCmd(t *testing.T) {
+	compilerErr := `testdata/cpp.cc:8:10: fatal error: 'missingheader.h' file not found
+
+	#include "missingheader.h"
+
+		^~~~~~~~~~~~
+
+	1 error generated.
+	`
+
+	cmd := [3]string{"-fsanitize=address", "file.cpp", "path/to/cpp.cc"}
+	expectedFixedCmd := [3]string{"-fanitize=address", "file.cpp", "path/to/jcc-corrected-cpp.cc"}
+	fixedCmd, _, _ := GetHeaderCorrectedCmd(cmd[:], compilerErr)
+	if strings.Compare(fixedCmd[1], expectedFixedCmd[1]) != 0 {
+		t.Errorf("Expected %s, got: %s", expectedFixedCmd, fixedCmd)
+	}
+}
+
+func TestCppifyHeaderIncludes(t *testing.T) {
+	t.Setenv("JCC_CPPIFY_PROJECT_HEADERS", "1")
+	src := `// Copyright blah
+#include <stddef.h>
+
+#include "fuzz.h"
+#include "x/y.h"
+extern "C" LLVMFuzzerTestOneInput(uint8_t* data, size_t sz) {
+  return 0;
+}`
+	newFile, _ := CppifyHeaderIncludes(src)
+	expected := `// Copyright blah
+#include <stddef.h>
+
+extern "C" {
+#include "fuzz.h"
+}
+extern "C" {
+#include "x/y.h"
+}
+extern "C" LLVMFuzzerTestOneInput(uint8_t* data, size_t sz) {
+  return 0;
+}
+/* JCCCppifyHeadersMagicString */
+`
+	if strings.Compare(newFile, expected) != 0 {
+		t.Errorf("Expected: %s, got: %s", expected, newFile)
+	}
+}
+
+func TestCppifyHeaderIncludesShouldnt(t *testing.T) {
+	src := `// Copyright blah
+#include <stddef.h>
+
+#include "fuzz.h"
+#include "x/y.h"
+extern "C" LLVMFuzzerTestOneInput(uint8_t* data, size_t sz) {
+  return 0;
+}`
+	newFile, _ := CppifyHeaderIncludes(src)
+	if strings.Compare(newFile, src) != 0 {
+		t.Errorf("Expected: %s. Got: %s", src, newFile)
+	}
+}
+
+func TestCppifyHeaderIncludesAlready(t *testing.T) {
+	src := `// Copyright blah
+#include <stddef.h>
+
+#include "fuzz.h"
+#include "x/y.h"
+extern "C" LLVMFuzzerTestOneInput(uint8_t* data, size_t sz) {
+  return 0;
+}
+/* JCCCppifyHeadersMagicString */
+`
+	newFile, _ := CppifyHeaderIncludes(src)
+	if strings.Compare(newFile, src) != 0 {
+		t.Errorf("Expected %s, got: %s", src, newFile)
+	}
+}
+
+func TestExtractMissingHeaderNonHeaderFailure(t *testing.T) {
+	missingHeaderMessage := `clang: error: no such file or directory: 'x'
+clang: error: no input files`
+
+	header, res := ExtractMissingHeader(missingHeaderMessage)
+	if res {
+		t.Errorf("Expected no match, got: %s", header)
+	}
+}
+
+func TestReplaceMissingHeader(t *testing.T) {
+	cfile := `// Copyright 2035 Robots
+#include <stddef.h>
+
+#include <cstdint>
+
+// Some libraries like OpenSSL will use brackets for their own headers.
+#include <missingheader.h>
+
+int LLVMFuzzerTestOneInput(uint8_t* data,  size_t size) {
+  return 0;
+}
+`
+
+	res := ReplaceMissingHeader(cfile, "missingheader.h", "path/to/includes/missingheader.h")
+	expected := `// Copyright 2035 Robots
+#include <stddef.h>
+
+#include <cstdint>
+
+// Some libraries like OpenSSL will use brackets for their own headers.
+#include "path/to/includes/missingheader.h"
+
+int LLVMFuzzerTestOneInput(uint8_t* data,  size_t size) {
+  return 0;
+}
+`
+	if strings.Compare(res, expected) != 0 {
+		t.Errorf("Got: %s. Expected: %s.", res, expected)
+	}
+}

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/testdata/.gitignore

@@ -0,0 +1,2 @@
+jcc-corrected-cfile.c
+jcc-corrected-cfile.cpp

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/testdata/cpp.cc

@@ -0,0 +1,18 @@
+// 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.
+
+#include "header.h"
+int main() {
+  return 0;
+}

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/jcc/testdata/path/to/header.h

@@ -0,0 +1,15 @@
+// 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.
+
+int xhg(void);

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/.gitignore

@@ -0,0 +1,4 @@
+dist
+pysecsan.egg-info*
+build
+.venv

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/LICENSE

@@ -0,0 +1,13 @@
+# 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.

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/README.md

@@ -0,0 +1,3 @@
+# pysecsan
+
+Security sanitizers for vulnerability detection during runtime.

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/pyproject.toml

@@ -0,0 +1,22 @@
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pysecsan"
+version = "0.1.0"
+authors = [
+  { name="David Korczynski", email="david@adalogics.com" },
+]
+description = "Sanitizers to detect security vulnerabilities at runtime."
+readme = "README.md"
+requires-python = ">=3.7"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
+]
+
+[project.urls]
+"Homepage" = "https://github.com/google/oss-fuzz/tree/master/infra/sanitizers/pysecsan"
+"Bug Tracker" = "https://github.com/google/oss-fuzz/issues"

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/pysecsan/__init__.py

@@ -0,0 +1,20 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Glue for pysecsan library."""
+
+# Import sanlib and expose only needs functionality by way of __all__
+from .sanlib import *
+
+# pylint: disable=undefined-all-variable
+__all__ = ['add_hooks']

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/pysecsan/redos.py

@@ -0,0 +1,84 @@
+# 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.
+#
+################################################################################
+"""Sanitizer for regular expression dos."""
+
+# pylint: disable=protected-access
+
+import time
+import os
+from pysecsan import sanlib
+
+START_RE_TIME = None
+
+
+# Hooks for regular expressions.
+# Main problem is to identify ReDOS attemps. This is a non-trivial task
+# - https://arxiv.org/pdf/1701.04045.pdf
+# - https://dl.acm.org/doi/pdf/10.1145/3236024.3236027
+# and the current approach we use is simply check for extensive computing time.
+# In essence, this is more of a refinement of traditional timeout checker from
+# the fuzzer, which, effectively will detect these types of attacks by way of
+# timeouts.
+#
+# Perhaps the smartest would be to use something like e.g.
+# https://github.com/doyensec/regexploit to scan the regex patterns.
+# Other heuristics without going too technical on identifying super-linear
+# regexes:
+# - check
+#   - if 'taint' exists in re.compile(xx)
+# - check
+#   - for backtracking possbility in PATTERN within re.comile(PATTERN)
+#   - and
+#   - 'taint' in findall(XX) calls.
+# pylint: disable=global-statement
+def hook_post_exec_re_pattern_findall(self, re_str):
+  """Hook post exeution re.compile().findall()."""
+  _ = self  # Satisfy lint
+  global START_RE_TIME
+  try:
+    endtime = time.time() - START_RE_TIME
+    if endtime > 4:
+      sanlib.abort_with_issue(f'Potential ReDOS attack.\n {re_str}', 'ReDOS')
+  except NameError:
+    sanlib.sanitizer_log(
+        'starttime is not set, which it should have. Error in PySecSan',
+        sanlib.LOG_INFO)
+    os._exit(1)
+
+
+def hook_pre_exec_re_pattern_findall(self, string):
+  """Hook pre execution of re.pattern().findall()."""
+  _ = (self, string)  # Satisfy lint
+  global START_RE_TIME
+  START_RE_TIME = time.time()
+
+
+def hook_post_exec_re_compile(retval, pattern, flags=None):
+  """Hook for re.compile post execution to hook returned objects functions."""
+  _ = (pattern, flags)  # Satisfy lint
+  sanlib.sanitizer_log('Inside of post compile hook', sanlib.LOG_DEBUG)
+  wrapper_object = sanlib.create_object_wrapper(
+      findall=(hook_pre_exec_re_pattern_findall,
+               hook_post_exec_re_pattern_findall))
+  hooked_object = wrapper_object(retval)
+  return hooked_object
+
+
+def hook_pre_exec_re_compile(pattern, flags=None):
+  """Check if tainted input exists in pattern. If so, likely chance of making
+    ReDOS possible."""
+  _ = (pattern, flags)  # Satisfy lint
+  sanlib.sanitizer_log('Inside re compile hook', sanlib.LOG_DEBUG)

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/setup.py

@@ -0,0 +1,21 @@
+# 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.
+"""Config for installing python as package."""
+from setuptools import setup, find_packages
+
+setup(name='pysecsan',
+      version='0.1',
+      author='David Korczynski',
+      author_email='david@adalogics.com',
+      packages=find_packages(exclude='tests'))

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/os_command_injection.py

@@ -0,0 +1,52 @@
+#!/usr/bin/python3
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Fuzzer targetting command injection of os.system."""
+
+import os
+import sys
+import atheris
+import pysecsan
+
+
+def list_files_perhaps(param, magicval):
+  """Pass fuzzer data into os.system."""
+  if 'B' not in param:
+    return
+  if magicval == 1338:
+    os.system('exec-san')
+  elif magicval == 1339:
+    os.system('ls -la FROMFUZZ')
+  else:
+    os.system('ls -la ./')
+
+
+def test_one_input(data):
+  """Fuzzer entrypoint."""
+  fdp = atheris.FuzzedDataProvider(data)
+  list_files_perhaps(fdp.ConsumeUnicodeNoSurrogates(24),
+                     fdp.ConsumeIntInRange(500, 1500))
+
+
+def main():
+  """Set up and start fuzzing."""
+  pysecsan.add_hooks()
+
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, test_one_input, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == '__main__':
+  main()

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/poe/pytorch-lightning-1.5.10/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.
+#
+################################################################################
+
+git clone --depth 1 --branch 1.5.10 https://github.com/PyTorchLightning/pytorch-lightning.git
+cd pytorch-lightning
+python3 -m pip install .
+cd ../
+python3 ./fuzz_pytorch_lightning.py

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/poe/pytorch-lightning-1.5.10/fuzz_pytorch_lightning.dict

@@ -0,0 +1 @@
+"os.system('exec-sanitizer')"

local-test-tika-delta-05/fuzz-tooling/infra/base-images/base-clang/checkout_build_install_llvm.sh

@@ -0,0 +1,246 @@
+#!/bin/bash -eux
+# Copyright 2016 Google Inc.
+#
+# 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.
+#
+################################################################################
+
+NPROC=$(nproc)
+
+TARGET_TO_BUILD=
+case $(uname -m) in
+    x86_64)
+      TARGET_TO_BUILD=X86
+      ARCHITECTURE_DEPS="g++-multilib"
+      # Use chromium's clang revision.
+      export CC=$WORK/llvm-stage1/bin/clang
+      export CXX=$WORK/llvm-stage1/bin/clang++
+      ;;
+    aarch64)
+      TARGET_TO_BUILD=AArch64
+      # g++ multilib is not needed on AArch64 because we don't care about i386.
+      # We need to install clang and lld using apt because the binary downloaded
+      # from Chrome's developer tools doesn't support AArch64.
+      # TODO(metzman): Make x86_64 use the distro's clang for consistency once
+      # we support AArch64 fully.
+      ARCHITECTURE_DEPS="clang lld g++"
+      export CC=clang
+      export CXX=clang++
+      ;;
+    *)
+      echo "Error: unsupported target $(uname -m)"
+      exit 1
+      ;;
+esac
+
+INTROSPECTOR_DEP_PACKAGES="texinfo bison flex"
+# zlib1g-dev is needed for llvm-profdata to handle coverage data from rust compiler
+LLVM_DEP_PACKAGES="build-essential make ninja-build git python3 python3-distutils binutils-dev zlib1g-dev $ARCHITECTURE_DEPS $INTROSPECTOR_DEP_PACKAGES"
+
+apt-get update && apt-get install -y $LLVM_DEP_PACKAGES --no-install-recommends
+
+# For manual bumping.
+# On each bump a full trial run for everything (fuzzing engines, sanitizers,
+# languages, projects, ...) is needed.
+# Check CMAKE_VERSION infra/base-images/base-clang/Dockerfile was released
+# recently enough to fully support this clang version.
+OUR_LLVM_REVISION=llvmorg-18.1.8
+
+mkdir $SRC/chromium_tools
+cd $SRC/chromium_tools
+git clone https://chromium.googlesource.com/chromium/src/tools/clang
+cd clang
+# Pin clang script due to https://github.com/google/oss-fuzz/issues/7617
+git checkout 9eb79319239629c1b23cf7a59e5ebb2bab319a34
+
+LLVM_SRC=$SRC/llvm-project
+# Checkout
+CHECKOUT_RETRIES=10
+function clone_with_retries {
+  REPOSITORY=$1
+  LOCAL_PATH=$2
+  CHECKOUT_RETURN_CODE=1
+
+  # Disable exit on error since we might encounter some failures while retrying.
+  set +e
+  for i in $(seq 1 $CHECKOUT_RETRIES); do
+    rm -rf $LOCAL_PATH
+    git clone $REPOSITORY $LOCAL_PATH
+    CHECKOUT_RETURN_CODE=$?
+    if [ $CHECKOUT_RETURN_CODE -eq 0 ]; then
+      break
+    fi
+  done
+
+  # Re-enable exit on error. If checkout failed, script will exit.
+  set -e
+  return $CHECKOUT_RETURN_CODE
+}
+clone_with_retries https://github.com/llvm/llvm-project.git $LLVM_SRC
+
+git -C $LLVM_SRC checkout $OUR_LLVM_REVISION
+echo "Using LLVM revision: $OUR_LLVM_REVISION"
+
+# For fuzz introspector.
+echo "Applying introspector changes"
+OLD_WORKING_DIR=$PWD
+cd $LLVM_SRC
+cp -rf /fuzz-introspector/frontends/llvm/include/llvm/Transforms/FuzzIntrospector/ ./llvm/include/llvm/Transforms/FuzzIntrospector
+cp -rf /fuzz-introspector/frontends/llvm/lib/Transforms/FuzzIntrospector ./llvm/lib/Transforms/FuzzIntrospector
+
+# LLVM currently does not support dynamically loading LTO passes. Thus, we
+# hardcode it into Clang instead. Ref: https://reviews.llvm.org/D77704
+/fuzz-introspector/frontends/llvm/patch-llvm.sh
+cd $OLD_WORKING_DIR
+
+mkdir -p $WORK/llvm-stage2 $WORK/llvm-stage1
+python3 $SRC/chromium_tools/clang/scripts/update.py --output-dir $WORK/llvm-stage1
+
+cd $WORK/llvm-stage2
+cmake -G "Ninja" \
+  -DLIBCXX_ENABLE_SHARED=OFF \
+  -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
+  -DLIBCXXABI_ENABLE_SHARED=OFF \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DLLVM_ENABLE_RUNTIMES="compiler-rt;libcxx;libcxxabi" \
+  -DLLVM_TARGETS_TO_BUILD="$TARGET_TO_BUILD" \
+  -DLLVM_ENABLE_PROJECTS="clang;lld" \
+  -DLLVM_BINUTILS_INCDIR="/usr/include/" \
+  -DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
+  $LLVM_SRC/llvm
+
+ninja -j $NPROC
+ninja install
+rm -rf $WORK/llvm-stage1 $WORK/llvm-stage2
+
+# libFuzzer sources.
+cp -r $LLVM_SRC/compiler-rt/lib/fuzzer $SRC/libfuzzer
+
+# Use the clang we just built from now on.
+export CC=clang
+export CXX=clang++
+
+function free_disk_space {
+    rm -rf $LLVM_SRC $SRC/chromium_tools
+    apt-get autoremove --purge -y $LLVM_DEP_PACKAGES
+    # Delete unneeded parts of LLVM to reduce image size.
+    # See https://github.com/google/oss-fuzz/issues/5170
+    LLVM_TOOLS_TMPDIR=/tmp/llvm-tools
+    mkdir $LLVM_TOOLS_TMPDIR
+    # Move binaries with llvm- prefix that we want into LLVM_TOOLS_TMPDIR.
+    mv \
+      /usr/local/bin/llvm-ar \
+      /usr/local/bin/llvm-as \
+      /usr/local/bin/llvm-config \
+      /usr/local/bin/llvm-cov \
+      /usr/local/bin/llvm-objcopy \
+      /usr/local/bin/llvm-nm \
+      /usr/local/bin/llvm-profdata \
+      /usr/local/bin/llvm-ranlib \
+      /usr/local/bin/llvm-symbolizer \
+      /usr/local/bin/llvm-undname \
+      $LLVM_TOOLS_TMPDIR
+
+    # Delete remaining llvm- binaries.
+    rm -rf /usr/local/bin/llvm-*
+
+    # Restore the llvm- binaries we want to keep.
+    mv $LLVM_TOOLS_TMPDIR/* /usr/local/bin/
+    rm -rf $LLVM_TOOLS_TMPDIR
+
+    # Remove binaries from LLVM build that we don't need.
+    rm -f \
+      /usr/local/bin/bugpoint \
+      /usr/local/bin/llc \
+      /usr/local/bin/lli \
+      /usr/local/bin/clang-check \
+      /usr/local/bin/clang-refactor \
+      /usr/local/bin/clang-offload-wrapper \
+      /usr/local/bin/clang-offload-bundler \
+      /usr/local/bin/clang-repl \
+      /usr/local/bin/clang-check \
+      /usr/local/bin/clang-refactor \
+      /usr/local/bin/c-index-test \
+      /usr/local/bin/clang-rename \
+      /usr/local/bin/clang-scan-deps \
+      /usr/local/bin/clang-extdef-mapping \
+      /usr/local/bin/diagtool \
+      /usr/local/bin/sanstats \
+      /usr/local/bin/dsymutil \
+      /usr/local/bin/verify-uselistorder \
+      /usr/local/bin/clang-format
+
+    # Remove unneeded clang libs, CMake files from LLVM build, lld libs, and the
+    # libraries.
+    # Note: we need fuzzer_no_main libraries for atheris. Don't delete.
+    rm -rf \
+      /usr/local/lib/libclang* \
+      /usr/local/lib/liblld* \
+      /usr/local/lib/cmake/
+}
+
+if [ "$TARGET_TO_BUILD" == "AArch64" ]
+then
+  free_disk_space
+  # Exit now on AArch64. We don't need to rebuild libc++ because on AArch64 we
+  # do not support MSAN nor do we care about i386.
+  exit 0
+fi
+
+function cmake_libcxx {
+  extra_args="$@"
+  cmake -G "Ninja" \
+      -DLIBCXX_ENABLE_SHARED=OFF \
+      -DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON \
+      -DLIBCXXABI_ENABLE_SHARED=OFF \
+      -DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DLLVM_ENABLE_PIC=ON \
+      -DLLVM_TARGETS_TO_BUILD="$TARGET_TO_BUILD" \
+      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+      -DLLVM_BINUTILS_INCDIR="/usr/include/" \
+      $extra_args \
+      -S $LLVM_SRC/runtimes
+}
+
+# 32-bit libraries.
+mkdir -p $WORK/i386
+cd $WORK/i386
+cmake_libcxx \
+    -DCMAKE_INSTALL_PREFIX=/usr/i386/ \
+    -DCMAKE_C_FLAGS="-m32" \
+    -DCMAKE_CXX_FLAGS="-m32"
+
+ninja -j $NPROC cxx
+ninja install-cxx
+rm -rf $WORK/i386
+
+# MemorySanitizer instrumented libraries.
+mkdir -p $WORK/msan
+cd $WORK/msan
+
+# https://github.com/google/oss-fuzz/issues/1099
+cat <<EOF > $WORK/msan/ignorelist.txt
+fun:__gxx_personality_*
+EOF
+
+cmake_libcxx \
+    -DLLVM_USE_SANITIZER=Memory \
+    -DCMAKE_INSTALL_PREFIX=/usr/msan/ \
+    -DCMAKE_CXX_FLAGS="-fsanitize-ignorelist=$WORK/msan/ignorelist.txt"
+
+ninja -j $NPROC cxx
+ninja install-cxx
+rm -rf $WORK/msan
+
+free_disk_space