mirror of
https://github.com/syoyo/tinygltf.git
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Add intensive parser unit tester and LLVM fuzzer for tinygltf_json.h backend
Co-authored-by: syoyo <18676+syoyo@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2
.gitignore
vendored
2
.gitignore
vendored
@@ -1,4 +1,5 @@
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# CMake
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build/
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CMakeCache.txt
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CMakeFiles
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CMakeScripts
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@@ -68,6 +69,7 @@ imgui.ini
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loader_example
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tests/tester
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tests/tester_noexcept
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tests/tester_intensive_customjson
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tests/issue-97.gltf
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tests/issue-261.gltf
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tests/issue-495-external.gltf
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@@ -56,6 +56,15 @@ if (TINYGLTF_BUILD_TESTS)
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)
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target_compile_definitions(tester_customjson PRIVATE TINYGLTF_USE_CUSTOM_JSON)
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add_test(NAME tester_customjson COMMAND tester_customjson WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tests)
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# Intensive parser tests for the custom JSON backend
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add_executable(tester_intensive_customjson tests/tester_intensive_customjson.cc)
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target_include_directories(tester_intensive_customjson PRIVATE
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${CMAKE_CURRENT_SOURCE_DIR}
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${CMAKE_CURRENT_SOURCE_DIR}/tests
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)
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target_compile_definitions(tester_intensive_customjson PRIVATE TINYGLTF_USE_CUSTOM_JSON)
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add_test(NAME tester_intensive_customjson COMMAND tester_intensive_customjson WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tests)
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endif (TINYGLTF_BUILD_TESTS)
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#
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BIN
build/tester
BIN
build/tester
Binary file not shown.
Binary file not shown.
BIN
build/tmp.glb
BIN
build/tmp.glb
Binary file not shown.
@@ -4,3 +4,4 @@
|
||||
all: ../tiny_gltf.h
|
||||
clang++ -I../ $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o tester tester.cc
|
||||
clang++ -DTINYGLTF_NOEXCEPTION -I../ $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o tester_noexcept tester.cc
|
||||
clang++ -DTINYGLTF_USE_CUSTOM_JSON -I../ $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o tester_intensive_customjson tester_intensive_customjson.cc
|
||||
|
||||
@@ -7,6 +7,11 @@ Do fuzzing test for TinyGLTF API.
|
||||
* [x] LoadASCIIFromMemory
|
||||
* [ ] LoadBinaryFromMemory
|
||||
|
||||
### Custom JSON backend (`tinygltf_json.h`)
|
||||
|
||||
* [x] LoadASCIIFromMemory
|
||||
* [x] LoadBinaryFromMemory
|
||||
|
||||
## Requirements
|
||||
|
||||
* meson
|
||||
@@ -36,11 +41,17 @@ $ cd build
|
||||
$ ninja
|
||||
```
|
||||
|
||||
This builds two fuzzers:
|
||||
|
||||
* `fuzz_gltf` – default nlohmann/json backend
|
||||
* `fuzz_gltf_customjson` – custom `tinygltf_json.h` backend (tests both ASCII and binary parsing paths)
|
||||
|
||||
## How to run
|
||||
|
||||
Increase memory limit. e.g. `-rss_limit_mb=50000`
|
||||
|
||||
```
|
||||
$ ./fuzz_gltf -rss_limit_mb=20000 -jobs 4
|
||||
$ ./fuzz_gltf_customjson -rss_limit_mb=20000 -jobs 4
|
||||
```
|
||||
|
||||
|
||||
76
tests/fuzzer/fuzz_gltf_customjson.cc
Normal file
76
tests/fuzzer/fuzz_gltf_customjson.cc
Normal file
@@ -0,0 +1,76 @@
|
||||
/*
|
||||
* LLVM libFuzzer harness for tinygltf with the custom JSON backend
|
||||
* (tinygltf_json.h).
|
||||
*
|
||||
* Exercises:
|
||||
* 1. LoadASCIIFromString – glTF JSON parsing
|
||||
* 2. LoadBinaryFromMemory – GLB binary parsing
|
||||
*
|
||||
* Build (clang with libFuzzer):
|
||||
* clang++ -std=c++11 -fsanitize=address,fuzzer \
|
||||
* -DTINYGLTF_USE_CUSTOM_JSON \
|
||||
* -I../../ fuzz_gltf_customjson.cc \
|
||||
* -o fuzz_gltf_customjson
|
||||
*
|
||||
* Run:
|
||||
* ./fuzz_gltf_customjson -rss_limit_mb=20000 -jobs 4
|
||||
*/
|
||||
|
||||
#include <cstdint>
|
||||
#include <cstring>
|
||||
#include <memory>
|
||||
#include <vector>
|
||||
#include <iostream>
|
||||
|
||||
#define STB_IMAGE_IMPLEMENTATION
|
||||
#define STB_IMAGE_WRITE_IMPLEMENTATION
|
||||
#define TINYGLTF_IMPLEMENTATION
|
||||
#ifndef TINYGLTF_USE_CUSTOM_JSON
|
||||
#define TINYGLTF_USE_CUSTOM_JSON
|
||||
#endif
|
||||
#include "tiny_gltf.h"
|
||||
|
||||
/* Fuzz the ASCII (JSON) parser path */
|
||||
static void fuzz_ascii(const uint8_t *data, size_t size) {
|
||||
tinygltf::Model model;
|
||||
tinygltf::TinyGLTF ctx;
|
||||
std::string err;
|
||||
std::string warn;
|
||||
|
||||
const char *str = reinterpret_cast<const char *>(data);
|
||||
|
||||
bool ret =
|
||||
ctx.LoadASCIIFromString(&model, &err, &warn, str,
|
||||
static_cast<unsigned int>(size), /* base_dir */ "");
|
||||
(void)ret;
|
||||
}
|
||||
|
||||
/* Fuzz the binary (GLB) parser path */
|
||||
static void fuzz_binary(const uint8_t *data, size_t size) {
|
||||
tinygltf::Model model;
|
||||
tinygltf::TinyGLTF ctx;
|
||||
std::string err;
|
||||
std::string warn;
|
||||
|
||||
bool ret = ctx.LoadBinaryFromMemory(&model, &err, &warn, data,
|
||||
static_cast<unsigned int>(size),
|
||||
/* base_dir */ "");
|
||||
(void)ret;
|
||||
}
|
||||
|
||||
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
|
||||
if (size == 0) return 0;
|
||||
|
||||
/* Use the first byte to select the parse path, pass the rest as input. */
|
||||
uint8_t selector = data[0];
|
||||
const uint8_t *payload = data + 1;
|
||||
size_t payload_size = size - 1;
|
||||
|
||||
if (selector & 1) {
|
||||
fuzz_binary(payload, payload_size);
|
||||
} else {
|
||||
fuzz_ascii(payload, payload_size);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@@ -7,3 +7,9 @@ executable('fuzz_gltf',
|
||||
cpp_args : '-fsanitize=address,fuzzer',
|
||||
link_args : '-fsanitize=address,fuzzer' )
|
||||
|
||||
executable('fuzz_gltf_customjson',
|
||||
'fuzz_gltf_customjson.cc',
|
||||
include_directories : incdirs,
|
||||
cpp_args : ['-fsanitize=address,fuzzer', '-DTINYGLTF_USE_CUSTOM_JSON'],
|
||||
link_args : '-fsanitize=address,fuzzer' )
|
||||
|
||||
|
||||
1079
tests/tester_intensive_customjson.cc
Normal file
1079
tests/tester_intensive_customjson.cc
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user