dawn-cmake/src/fuzzers/StandaloneFuzzerMain.cpp
Austin Eng 470921fe46 Reland "fuzzing: Add supportsErrorInjection option to DawnWireServerFuzzer"
This is a reland of f58f69f66bacefb0aaf78e91b462b5db97cea391

The whitebox dawn_end2end_tests are updated to link statically against
libdawn_native. This is required because the test link against and use
libdawn_native as sources. It is an error with MSVC to both import and
export symbols from libdawn_native.

Original change's description:
> fuzzing: Add supportsErrorInjection option to DawnWireServerFuzzer
>
> This option will be used by backends that support error injection so
> that errors can be injected into a "clean" corpus to generate a seed
> corpus with good examples of injected error conditions.
>
> Bug: dawn:295
> Change-Id: I837acdde6dd4274adb56edf8e4307427f8d6333b
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14681
> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
> Commit-Queue: Austin Eng <enga@chromium.org>

Bug: dawn:295
Change-Id: Ifa092d28aa7ac57cfb197aa4daeb8408f8036d4a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14820
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
2020-01-06 19:56:17 +00:00

69 lines
2.3 KiB
C++

// Copyright 2018 The Dawn Authors
//
// 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 <cstdint>
#include <cstdlib>
#include <iostream>
#include <vector>
extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
int main(int argc, char** argv) {
if (LLVMFuzzerInitialize(&argc, &argv)) {
std::cerr << "Failed to initialize fuzzer target" << std::endl;
return 1;
}
if (argc != 2) {
std::cout << "Usage: <standalone reproducer> [options] FILE" << std::endl;
return 1;
}
std::cout << "WARNING: this is just a best-effort reproducer for fuzzer issues in standalone "
<< "Dawn builds. For the real fuzzer, please build inside Chromium." << std::endl;
const char* filename = argv[1];
std::cout << "Reproducing using file: " << filename << std::endl;
std::vector<char> data;
{
FILE* file = fopen(filename, "rb");
if (!file) {
std::cerr << "Failed to open " << filename << std::endl;
return 1;
}
fseek(file, 0, SEEK_END);
long tellFileSize = ftell(file);
if (tellFileSize <= 0) {
std::cerr << "Input file of incorrect size: " << filename << std::endl;
return 1;
}
fseek(file, 0, SEEK_SET);
size_t fileSize = static_cast<size_t>(tellFileSize);
data.resize(fileSize);
size_t bytesRead = fread(data.data(), sizeof(char), fileSize, file);
fclose(file);
if (bytesRead != fileSize) {
std::cerr << "Failed to read " << filename << std::endl;
return 1;
}
}
return LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t*>(data.data()), data.size());
}