Add files using upload-large-folder tool

local-test-tika-delta-04/fuzz-tooling/CITATION.cff

@@ -0,0 +1,46 @@
+cff-version: 1.2.0
+title: OSS-Fuzz
+message: >-
+  If you use this software, please cite it using the
+  metadata from this file.
+type: software
+authors:
+  - given-names: Abhishek
+    family-names: Arya
+    affiliation: Google LLC
+    email: aarya@google.com
+    orcid: 'https://orcid.org/0009-0009-4558-4314'
+  - given-names: Oliver
+    family-names: Chang
+    email: ochang@google.com
+    affiliation: Google LLC
+    orcid: 'https://orcid.org/0009-0006-3181-4551'
+  - given-names: Jonathan
+    family-names: Metzman
+    email: metzman@google.com
+    affiliation: Google LLC
+    orcid: 'https://orcid.org/0000-0002-7042-0444'
+  - given-names: Kostya
+    family-names: Serebryany
+    email: kcc@google.com
+    affiliation: Google LLC
+    orcid: 'https://orcid.org/0009-0009-2379-3641'
+  - given-names: Dongge
+    family-names: Liu
+    email: donggeliu@google.com
+    affiliation: Google LLC
+    orcid: 'https://orcid.org/0000-0003-4821-7033'
+repository-code: 'https://github.com/google/oss-fuzz'
+abstract: >-
+  OSS-Fuzz is an open-source project by Google that provides
+  continuous fuzzing for open-source software. It aims to
+  make common open-source software more secure and stable by
+  combining modern fuzzing techniques with scalable,
+  distributed execution. As of August 2023, OSS-Fuzz has
+  helped identify and fix over 10,000 vulnerabilities and
+  36,000 bugs across 1,000 projects.
+keywords:
+  - open-source
+  - fuzzing
+license: Apache-2.0
+

local-test-tika-delta-04/fuzz-tooling/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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+   limitations under the License.

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/README.md

@@ -0,0 +1 @@
+# Tests including Proof of Exploits

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/poe/libvcs-cve-2022-21187/build.sh

@@ -0,0 +1,21 @@
+#!/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.
+#
+################################################################################
+
+python3 -m pip install pysecsan
+
+python3 -m pip install libvcs==0.11.0
+python3 ./fuzz_libvcs.py

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-builder/sanitizers/pysecsan/tests/poe/libvcs-cve-2022-21187/fuzz_libvcs.py

@@ -0,0 +1,45 @@
+#!/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.
+"""Targets https://github.com/advisories/GHSA-mv2w-4jqc-6fg4."""
+
+import sys
+import atheris
+import pysecsan
+from libvcs.shortcuts import create_repo
+
+pysecsan.add_hooks()
+
+
+def test_one_input(data):
+  """Target code injection in libvcs."""
+  fdp = atheris.FuzzedDataProvider(data)
+  mercurial_repo = create_repo(url=fdp.ConsumeUnicodeNoSurrogates(128),
+                               vcs='hg',
+                               repo_dir='./')
+  try:
+    mercurial_repo.update_repo()
+  except (ValueError, FileNotFoundError) as exception:
+    _ = exception  # Satisfy lint
+
+
+def main():
+  """Set up and start fuzzing."""
+  atheris.instrument_all()
+  atheris.Setup(sys.argv, test_one_input, enable_python_coverage=True)
+  atheris.Fuzz()
+
+
+if __name__ == '__main__':
+  main()

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-runner/gocoverage/convertcorpus/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/AdamKorcz/go-118-fuzz-build/coverage"
+)
+
+// reads all corpus files in a directory and converts
+// them from libFuzzer format to native Go format.
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Println(os.Args)
+		log.Fatalf("need exactly two argument")
+	}
+	FUZZERNAME := os.Args[1]
+	CORPUS_PATH := os.Args[2]
+
+	filepath.Walk(CORPUS_PATH, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return nil
+		}
+		if !info.Mode().IsRegular() {
+			return nil
+		}
+		libFuzzerSeed, err := os.ReadFile(path)
+		if err != nil {
+			panic(err)
+		}
+		out := os.Getenv("OUT")
+		fuzzerContents, err := os.ReadFile(filepath.Join(out, "rawfuzzers", FUZZERNAME))
+		if err != nil {
+			panic(err)
+		}
+		goSeed := coverage.ConvertLibfuzzerSeedToGoSeed(fuzzerContents, libFuzzerSeed, FUZZERNAME)
+		err = os.Remove(path)
+		if err != nil {
+			panic(err)
+		}
+		f, err := os.Create(path)
+		if err != nil {
+			panic(err)
+		}
+		defer f.Close()
+		_, err = f.Write([]byte(goSeed))
+		if err != nil {
+			panic(err)
+		}
+		return nil
+	})
+}

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-runner/gocoverage/go.sum

@@ -0,0 +1,30 @@
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/google/pprof v0.0.0-20210226084205-cbba55b83ad5 h1:zIaiqGYDQwa4HVx5wGRTXbx38Pqxjemn4BP98wpzpXo=
+github.com/google/pprof v0.0.0-20210226084205-cbba55b83ad5/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
+github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.0 h1:po9/4sTYwZU9lPhi1tOrb4hCv3qrhiQ77LZfGa2OjwY=
+golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/base-images/base-runner/gocoverage/gocovmerge/gocovmerge.go

@@ -0,0 +1,111 @@
+// gocovmerge takes the results from multiple `go test -coverprofile` runs and
+// merges them into one profile
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"sort"
+
+	"golang.org/x/tools/cover"
+)
+
+func mergeProfiles(p *cover.Profile, merge *cover.Profile) {
+	if p.Mode != merge.Mode {
+		log.Fatalf("cannot merge profiles with different modes")
+	}
+	// Since the blocks are sorted, we can keep track of where the last block
+	// was inserted and only look at the blocks after that as targets for merge
+	startIndex := 0
+	for _, b := range merge.Blocks {
+		startIndex = mergeProfileBlock(p, b, startIndex)
+	}
+}
+
+func mergeProfileBlock(p *cover.Profile, pb cover.ProfileBlock, startIndex int) int {
+	sortFunc := func(i int) bool {
+		pi := p.Blocks[i+startIndex]
+		return pi.StartLine >= pb.StartLine && (pi.StartLine != pb.StartLine || pi.StartCol >= pb.StartCol)
+	}
+
+	i := 0
+	if sortFunc(i) != true {
+		i = sort.Search(len(p.Blocks)-startIndex, sortFunc)
+	}
+	i += startIndex
+	if i < len(p.Blocks) && p.Blocks[i].StartLine == pb.StartLine && p.Blocks[i].StartCol == pb.StartCol {
+		if p.Blocks[i].EndLine != pb.EndLine || p.Blocks[i].EndCol != pb.EndCol {
+			log.Fatalf("OVERLAP MERGE: %v %v %v", p.FileName, p.Blocks[i], pb)
+		}
+		switch p.Mode {
+		case "set":
+			p.Blocks[i].Count |= pb.Count
+		case "count", "atomic":
+			p.Blocks[i].Count += pb.Count
+		default:
+			log.Fatalf("unsupported covermode: '%s'", p.Mode)
+		}
+	} else {
+		if i > 0 {
+			pa := p.Blocks[i-1]
+			if pa.EndLine >= pb.EndLine && (pa.EndLine != pb.EndLine || pa.EndCol > pb.EndCol) {
+				log.Fatalf("OVERLAP BEFORE: %v %v %v", p.FileName, pa, pb)
+			}
+		}
+		if i < len(p.Blocks)-1 {
+			pa := p.Blocks[i+1]
+			if pa.StartLine <= pb.StartLine && (pa.StartLine != pb.StartLine || pa.StartCol < pb.StartCol) {
+				log.Fatalf("OVERLAP AFTER: %v %v %v", p.FileName, pa, pb)
+			}
+		}
+		p.Blocks = append(p.Blocks, cover.ProfileBlock{})
+		copy(p.Blocks[i+1:], p.Blocks[i:])
+		p.Blocks[i] = pb
+	}
+	return i + 1
+}
+
+func addProfile(profiles []*cover.Profile, p *cover.Profile) []*cover.Profile {
+	i := sort.Search(len(profiles), func(i int) bool { return profiles[i].FileName >= p.FileName })
+	if i < len(profiles) && profiles[i].FileName == p.FileName {
+		mergeProfiles(profiles[i], p)
+	} else {
+		profiles = append(profiles, nil)
+		copy(profiles[i+1:], profiles[i:])
+		profiles[i] = p
+	}
+	return profiles
+}
+
+func dumpProfiles(profiles []*cover.Profile, out io.Writer) {
+	if len(profiles) == 0 {
+		return
+	}
+	fmt.Fprintf(out, "mode: %s\n", profiles[0].Mode)
+	for _, p := range profiles {
+		for _, b := range p.Blocks {
+			fmt.Fprintf(out, "%s:%d.%d,%d.%d %d %d\n", p.FileName, b.StartLine, b.StartCol, b.EndLine, b.EndCol, b.NumStmt, b.Count)
+		}
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	var merged []*cover.Profile
+
+	for _, file := range flag.Args() {
+		profiles, err := cover.ParseProfiles(file)
+		if err != nil {
+			log.Fatalf("failed to parse profiles: %v", err)
+		}
+		for _, p := range profiles {
+			merged = addProfile(merged, p)
+		}
+	}
+
+	dumpProfiles(merged, os.Stdout)
+}

local-test-tika-full-01-vuln_7/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-full-01-vuln_7/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-full-01-vuln_7/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-full-01-vuln_7/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-full-01-vuln_7/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-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/build_all.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# 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.
+#
+################################################################################
+
+# Build all C/C++ projects.
+c_project_yaml=$(find projects/ -name project.yaml -exec grep -l 'language: c' {} \;)
+projs=$(echo $c_project_yaml | xargs dirname | xargs basename -a | sort)
+
+cd infra/experimental/chronos
+
+for proj in $projs; do
+  if [ ! -f ../../../projects/$proj/Dockerfile ]; then
+    # Incomplete integration.
+    echo "Skipping $proj as it's incomplete."
+    continue
+  fi
+
+  echo ./build_on_cloudbuild.sh $proj c
+  ./build_on_cloudbuild.sh $proj c
+done

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/build_cache_local.sh

@@ -0,0 +1,163 @@
+#!/bin/bash -eu
+# 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.
+#
+################################################################################
+
+_PROJECT=$1
+_FUZZING_LANGUAGE=$2
+_SANITIZER=${3:-address}
+
+BASE=$PWD
+
+# Final image is either ccache or replay script, depending on which worked.
+FINAL_IMAGE_NAME=us-central1-docker.pkg.dev/oss-fuzz/oss-fuzz-gen/${_PROJECT}-ofg-cached-${_SANITIZER}
+
+# Always build an image with ccache.
+CCACHE_IMAGE_NAME=us-central1-docker.pkg.dev/oss-fuzz/oss-fuzz-gen/${_PROJECT}-ofg-ccache-${_SANITIZER}
+
+# Step 1: build the base image
+cd projects/${_PROJECT}
+docker build -t gcr.io/oss-fuzz/${_PROJECT} .
+
+
+# Step 2: create a container where `compile` has run which enables ccaching
+#         and also generates a replay build script.
+cd ${BASE}
+mkdir -p ccaches/${_PROJECT}
+mkdir -p build/out/${_PROJECT}
+B_START=$SECONDS
+
+docker container rm -f ${_PROJECT}-origin-${_SANITIZER}
+
+docker run \
+  --env=SANITIZER=${_SANITIZER} \
+  --env=CCACHE_DIR=/workspace/ccache \
+  --env=FUZZING_LANGUAGE=${_FUZZING_LANGUAGE} \
+  --env=CAPTURE_REPLAY_SCRIPT=1 \
+  --name=${_PROJECT}-origin-${_SANITIZER} \
+  -v=$PWD/ccaches/${_PROJECT}/ccache:/workspace/ccache \
+  -v=$PWD/build/out/${_PROJECT}/:/out/ \
+  gcr.io/oss-fuzz/${_PROJECT} \
+  /bin/bash -c \
+  "export PATH=/ccache/bin:\$PATH && compile"
+B_TIME=$(($SECONDS - $B_START))
+
+# Step 3: save (commit, locally) the cached container as an image
+docker container commit -c "ENV REPLAY_ENABLED=1" -c "ENV CAPTURE_REPLAY_SCRIPT=" ${_PROJECT}-origin-${_SANITIZER} $FINAL_IMAGE_NAME
+
+# Step 4: save the list of executables created from a vanilla build. This is
+#         needed for validating if replay and ccaching works.
+# notes: run a shell the container with e.g.
+# `docker run --entrypoint /bin/bash  -it local/ossfuzz/htslib-origin-address`
+executables_vanilla="$(find ./build/out/${_PROJECT} -executable -type f | sort)"
+
+
+# Step 5: Build with replay enabled, and validate the executables are the same
+# in terms of naming.
+# Note that an important step is removing everything in $OUT/ which is done
+# in the docker command.
+R_START=$SECONDS
+docker run \
+  --rm \
+  --env=SANITIZER=${_SANITIZER} \
+  --env=FUZZING_LANGUAGE=${_FUZZING_LANGUAGE} \
+  -v=$PWD/build/out/${_PROJECT}/:/out/ \
+  --name=${_PROJECT}-origin-${_SANITIZER}-replay-recached \
+  $FINAL_IMAGE_NAME \
+  /bin/bash -c \
+  "export PATH=/ccache/bin:\$PATH && rm -rf /out/* && compile"
+R_TIME=$(($SECONDS - $R_START))
+
+# Step 6: Extract the newly build executables
+executables_replay="$(find ./build/out/${_PROJECT}/ -executable -type f | sort)"
+
+echo "Executables vanilla: "
+echo ${executables_vanilla}
+
+echo "------------------------------------------------------"
+echo "Executables replay: "
+echo ${executables_replay}
+
+REPLAY_WORKED=
+
+# Step 7: match executables from vanilla builds and replay builds.
+#         If this step is successful, then the process can exit as it's ready.
+if [[ "$executables_replay" == "$executables_vanilla" ]]
+then
+  REPLAY_WORKED=1
+
+  if [ -z "${RUN_ALL+1}" ]; then
+    echo "${_PROJECT}: Replay worked."
+    echo "${_PROJECT}: Compile times: Vanilla=${B_TIME}; Replay=${R_TIME};"
+    exit 0
+  fi
+else
+  echo "${_PROJECT}: Replay did not work"
+  R_TIME="N/A"
+fi
+
+# Step 8: prepare Dockerfile for ccache
+cp -rf ccaches/${_PROJECT}/ccache ./projects/${_PROJECT}/ccache-cache
+
+infra/experimental/chronos/prepare-ccache ${_PROJECT}
+
+cd projects/${_PROJECT}
+
+# Step 9: Build an image with CCache's new items (modifications are done on the
+#         dockerfile)
+docker build -t $CCACHE_IMAGE_NAME .
+
+cd ${BASE}
+
+# Step 10: Run a `compile` with ccache's image.
+# Run the ccache build
+A_START=$SECONDS
+docker run \
+  --rm \
+  --env=SANITIZER=${_SANITIZER} \
+  --env=FUZZING_LANGUAGE=${_FUZZING_LANGUAGE} \
+  --name=${_PROJECT}-origin-${_SANITIZER}-recached \
+  -v=$PWD/build/out/${_PROJECT}/:/out/ \
+  $CCACHE_IMAGE_NAME \
+  /bin/bash -c \
+  "export PATH=/ccache/bin:\$PATH && rm -rf /out/* && compile"
+A_TIME=$(($SECONDS - $A_START))
+
+# Step 11: extract the executables from the ccache build
+executables_ccache="$(find ./build/out/${_PROJECT}/ -executable -type f | sort)"
+
+
+# Step 12: validate the ccache builds are successful
+if [[ "$executables_ccache" == "$executables_vanilla" ]]
+then
+  echo "${_PROJECT}: Compile times: Vanilla=${B_TIME}; Replay=${R_TIME}; CCache=${A_TIME};"
+
+  if [[ -z "${REPLAY_WORKED}" || ${R_TIME} -gt ${A_TIME} ]]; then
+    if [ ${R_TIME} -gt ${A_TIME} ]; then
+      echo "Replay was slower than ccache."
+    fi
+
+    # Replay didn't work or was slower, so make the default "cached" image use the ccache one.
+    docker image tag \
+      $CCACHE_IMAGE_NAME \
+      $FINAL_IMAGE_NAME
+  fi
+
+  exit 0
+else
+  echo "${_PROJECT}: Replay and ccaching did not work."
+  exit 1
+fi
+

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/build_on_cloudbuild.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+# 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.
+#
+################################################################################
+PROJECT=$1
+FUZZING_LANGUAGE=$2
+
+gcloud builds submit "https://github.com/google/oss-fuzz" \
+  --async \
+  --git-source-revision=master \
+  --config=cloudbuild.yaml \
+  --substitutions=_PROJECT=$PROJECT,_FUZZING_LANGUAGE=$FUZZING_LANGUAGE \
+  --project=oss-fuzz \
+  --region=us-central1

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/chronos.sh

@@ -0,0 +1,81 @@
+# 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.
+#
+################################################################################
+
+# This script records the ENV and commands needed for fuzz target recompilation.
+# It intercepts bash commands to save: 1) the ENV variable values before
+# building the fuzz target (`recompile_env.sh`) and 2) all subsequent bash
+# commands from that point (`recompile`). Combined with Docker, this setup
+# allows for recompiling the fuzz target without rebuilding the entire project.
+# Usage:
+# 1. Set FUZZ_TARGET (e.g., in project's Dockerfile)
+# 2. Source this file before compiling the fuzz target (e.g., source chronos.sh
+# at the beginning of project's build.sh).
+
+export START_RECORDING="false"
+RECOMPILE_ENV="/usr/local/bin/recompile_env.sh"
+
+
+# Initialize the recompile script as compile in case Chronos did not trap any
+# command containing the fuzz target.
+initialize_recompile_script() {
+    export RECOMPILE_SCRIPT="/usr/local/bin/recompile"
+    cp "/usr/local/bin/compile" "$RECOMPILE_SCRIPT"
+}
+
+reset_recompile_script() {
+    rm "$RECOMPILE_SCRIPT"
+    echo "#!/bin/bash" > "$RECOMPILE_SCRIPT"
+    echo "source $RECOMPILE_ENV" >> "$RECOMPILE_SCRIPT" 
+    chmod +x "$RECOMPILE_SCRIPT" 
+}
+
+
+# Execute or record command for recompilation.
+execute_or_record_command() {
+    record_command() {
+        echo "cd \"$(pwd)\"" >> "$RECOMPILE_SCRIPT"
+        echo "$@" >> "$RECOMPILE_SCRIPT"
+    }
+
+    # Check if any element in the command array contains the FUZZ_TARGET.
+    if [[ "$BASH_COMMAND" == *"$FUZZ_TARGET"* ]]; then
+        export START_RECORDING="true"
+        # Save all environment variables, excluding read-only ones
+        reset_recompile_script
+        declare -p | grep -Ev 'declare -[^ ]*r[^ ]*' > "$RECOMPILE_ENV"
+    fi
+
+    if [[ "$START_RECORDING" == "true" ]]; then
+        record_command "$BASH_COMMAND"
+        echo "Recorded execution of: $BASH_COMMAND"
+    fi
+}
+
+
+main() {
+    # Initialize.
+    initialize_recompile_script
+    
+    # Set up trap for DEBUG to intercept commands.
+    trap 'execute_or_record_command' DEBUG
+
+    # Enable extended debugging mode
+    shopt -s extdebug  
+    # Ensure trap works in subshells and functions.
+    set -T  
+}
+
+main

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/cloudbuild_all.yaml

@@ -0,0 +1,34 @@
+# 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.
+#
+################################################################################
+# CloudBuild for generating Chronos-cached images.
+steps:
+- name: 'gcr.io/cloud-builders/docker'
+  args:
+  - build
+  - -t
+  - gcloud
+  - .
+  dir: infra/experimental/chronos
+- name: 'gcloud'
+  args:
+  - infra/experimental/chronos/build_all.sh
+  entrypoint: /bin/bash
+timeout: 1800s
+serviceAccount: 'projects/oss-fuzz/serviceAccounts/llm-eval@oss-fuzz.iam.gserviceaccount.com'
+options:
+  logging: CLOUD_LOGGING_ONLY
+tags:
+- chronos-all

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/chronos/e2e-replay-build.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/bash
+# 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.
+#
+################################################################################
+
+# Sample projects: simd, wt, libheif, htslib
+PROJECT=liblouis
+LOG=replay-${PROJECT}.txt
+OUT1=replay-out-${PROJECT}-1
+OUT2=replay-out-${PROJECT}-2
+python infra/helper.py build_image --no-pull  "$PROJECT"
+
+# AddressSanitizer.
+mkdir -p build/out/${PROJECT}
+echo "start" >> ${LOG}
+echo $(date +%Y:%m:%d:%H:%M:%S) >> ${LOG}
+# Remove container name we are about to use.
+docker container rm "${PROJECT}-origin-asan"
+
+# Build once, clean container if needed
+docker run -v $PWD/build/out/${PROJECT}:/out \
+    -ti --entrypoint="/bin/sh" \
+    --env FUZZING_LANGUAGE=c  --env SANITIZER="address" \
+    --name "${PROJECT}-origin-asan" \
+    "gcr.io/oss-fuzz/${PROJECT}" -c "compile"
+
+# Copy outs and log data
+cp -rf $PWD/build/out/${PROJECT} ${OUT1}
+rm -rf $PWD/build/out/${PROJECT}
+ls -la $PWD/build/out/ >> ${LOG}
+echo "next" >> ${LOG}
+echo $(date +%Y:%m:%d:%H:%M:%S) >> ${LOG}
+docker commit "${PROJECT}-origin-asan" "gcr.io/oss-fuzz/${PROJECT}-ofg-cached-asan"
+
+# Run the replay command
+docker run -v $PWD/build/out/${PROJECT}:/out \
+    -e REPLAY_ENABLED=1 -ti --entrypoint="/bin/sh" \
+    --env FUZZING_LANGUAGE=c --env SANITIZER="address" \
+    "gcr.io/oss-fuzz/${PROJECT}-ofg-cached-asan" -c "compile"
+echo "finish" >> ${LOG}
+echo $(date +%Y:%m:%d:%H:%M:%S) >> ${LOG}
+cp -rf $PWD/build/out/${PROJECT} ${OUT2}
+
+# Now match the artifacts
+SUCCESS=$(infra/experimental/chronos/match_artifacts $OUT1 $OUT2)
+
+if [[ $SUCCESS -eq 0 ]]; then
+  echo "SUCCESS REPLAY" >> ${LOG}
+else
+  echo "FAIL REPLAY" >> ${LOG}
+fi

local-test-tika-full-01-vuln_7/fuzz-tooling/infra/experimental/sanitizers/ExecSan/README.md

@@ -0,0 +1,3 @@
+# Moved
+
+This has moved to <https://github.com/google/oss-fuzz/tree/master/infra/experimental/SystemSan>.