mirror of
https://github.com/webmproject/libwebp.git
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82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
// Copyright 2024 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////////
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// Fuzzing of libwebp's image readers
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <iostream>
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#include <tiffio.h>
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#include "imageio/image_dec.h"
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#include "imageio/metadata.h"
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#include "src/webp/encode.h"
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#include "tests/fuzzer/fuzz_utils.h"
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namespace {
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void TestReader(const uint8_t *data, size_t size, WebPImageReader reader,
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bool keep_alpha, bool use_argb) {
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WebPPicture pic;
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if (!WebPPictureInit(&pic)) {
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std::cerr << "WebPPictureInit failed" << std::endl;
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abort();
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}
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Metadata metadata;
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MetadataInit(&metadata);
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pic.use_argb = use_argb ? 1 : 0;
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if (!fuzz_utils::IsImageTooBig(data, size)) {
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(void)(*reader)(data, size, &pic, keep_alpha ? 1 : 0, &metadata);
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}
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WebPPictureFree(&pic);
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MetadataFree(&metadata);
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}
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constexpr WebPInputFileFormat kUnknown = WEBP_UNSUPPORTED_FORMAT;
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void Decode(std::string_view arbitrary_bytes, WebPInputFileFormat format,
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bool keep_alpha, bool use_argb) {
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if (format == kUnknown || format == WEBP_TIFF_FORMAT) {
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TIFFSetErrorHandler(NULL); // libtiff can be verbose about errors.
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TIFFSetWarningHandler(NULL); // Silence it to avoid timeouts.
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}
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const uint8_t *data =
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reinterpret_cast<const uint8_t *>(arbitrary_bytes.data());
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const size_t size = arbitrary_bytes.size();
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if (format == kUnknown) {
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(void)WebPGuessImageType(data, size); // shouldn't fail
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TestReader(data, size, WebPGuessImageReader(data, size), keep_alpha,
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use_argb);
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} else {
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TestReader(data, size, WebPGetImageReader(format), keep_alpha, use_argb);
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}
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}
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FUZZ_TEST(ImageIOSuite, Decode)
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.WithDomains(
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fuzztest::String()
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.WithMaxSize(fuzz_utils::kMaxWebPFileSize + 1),
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fuzztest::ElementOf<WebPInputFileFormat>(
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{WEBP_PNG_FORMAT, WEBP_JPEG_FORMAT, WEBP_TIFF_FORMAT,
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WEBP_WEBP_FORMAT, WEBP_PNM_FORMAT, kUnknown}),
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/*keep_alpha=*/fuzztest::Arbitrary<bool>(),
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/*use_argb=*/fuzztest::Arbitrary<bool>());
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} // namespace
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