| // Copyright 2023 The Dawn & Tint Authors |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // 1. Redistributions of source code must retain the above copyright notice, this |
| // list of conditions and the following disclaimer. |
| // |
| // 2. Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // |
| // 3. Neither the name of the copyright holder nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <iostream> |
| |
| #include "src/tint/cmd/fuzz/wgsl/fuzz.h" |
| #include "src/tint/utils/cli/cli.h" |
| #include "src/tint/utils/macros/defer.h" |
| #include "src/tint/utils/text/base64.h" |
| |
| namespace { |
| |
| tint::fuzz::wgsl::Options options; |
| |
| } // namespace |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* input, size_t size) { |
| if (size > 0) { |
| std::string_view wgsl(reinterpret_cast<const char*>(input), size); |
| auto data = tint::DecodeBase64FromComments(wgsl); |
| tint::fuzz::wgsl::Run(wgsl, data.Slice(), options); |
| } |
| return 0; |
| } |
| |
| extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) { |
| tint::cli::OptionSet opts; |
| |
| tint::Vector<std::string_view, 8> arguments; |
| for (int i = 1; i < *argc; i++) { |
| std::string_view arg((*argv)[i]); |
| if (!arg.empty()) { |
| arguments.Push(arg); |
| } |
| } |
| |
| auto show_help = [&] { |
| std::cerr << "Custom fuzzer options:" << std::endl; |
| opts.ShowHelp(std::cerr); |
| std::cerr << std::endl; |
| // Change args to show libfuzzer help |
| std::cerr << "Standard libfuzzer "; // libfuzzer will print 'Usage:' |
| static char help[] = "-help=1"; |
| *argc = 2; |
| (*argv)[1] = help; |
| }; |
| |
| auto& opt_help = opts.Add<tint::cli::BoolOption>("help", "shows the usage"); |
| auto& opt_concurrent = |
| opts.Add<tint::cli::BoolOption>("concurrent", "runs the fuzzers concurrently"); |
| |
| tint::cli::ParseOptions parse_opts; |
| parse_opts.ignore_unknown = true; |
| if (auto res = opts.Parse(arguments, parse_opts); res != tint::Success) { |
| show_help(); |
| std::cerr << res.Failure(); |
| return 0; |
| } |
| |
| if (opt_help.value.value_or(false)) { |
| show_help(); |
| return 0; |
| } |
| |
| options.run_concurrently = opt_concurrent.value.value_or(false); |
| return 0; |
| } |