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add animdecoder_fuzzer.cc

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Bug: webp:409
Change-Id: Iade1e6b1288faad9076f72c21c1bde5a6bbfc7e0
This commit is contained in:
James Zern 2020-10-14 19:39:02 -07:00
parent 36a6eea3bc
commit 443db47d91
3 changed files with 50 additions and 2 deletions
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1
.gitignore vendored
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@ -44,6 +44,7 @@ extras/vwebp_sdl
extras/webp_quality
tests/fuzzer/advanced_api_fuzzer
tests/fuzzer/animation_api_fuzzer
tests/fuzzer/animdecoder_fuzzer
tests/fuzzer/animencoder_fuzzer
tests/fuzzer/demux_api_fuzzer
tests/fuzzer/enc_dec_fuzzer

47
tests/fuzzer/animdecoder_fuzzer.cc Normal file
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@ -0,0 +1,47 @@
// Copyright 2020 Google Inc.
//
// 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 "examples/anim_util.h"
#include "imageio/imageio_util.h"
#include "webp/demux.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
// WebPAnimDecoderGetInfo() is too late to check the canvas size as
// WebPAnimDecoderNew() will handle the allocations.
WebPBitstreamFeatures features;
if (WebPGetFeatures(data, size, &features) == VP8_STATUS_OK) {
if (!ImgIoUtilCheckSizeArgumentsOverflow(features.width * 4,
features.height)) {
return 0;
}
}
// decode everything as an animation
WebPData webp_data = { data, size };
WebPAnimDecoder* const dec = WebPAnimDecoderNew(&webp_data, NULL);
if (dec == NULL) return 0;
WebPAnimInfo info;
if (!WebPAnimDecoderGetInfo(dec, &info)) return 0;
while (WebPAnimDecoderHasMoreFrames(dec)) {
uint8_t* buf;
int timestamp;
if (!WebPAnimDecoderGetNext(dec, &buf, &timestamp)) break;
}
WebPAnimDecoderDelete(dec);
return 0;
}

4
tests/fuzzer/makefile.unix
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@ -8,10 +8,10 @@ CFLAGS = -fsanitize=fuzzer -I../../src -I../..
CXXFLAGS = $(CFLAGS)
LDFLAGS = -fsanitize=fuzzer
LDLIBS = ../../src/mux/libwebpmux.a ../../src/demux/libwebpdemux.a
LDLIBS += ../../src/libwebp.a
LDLIBS += ../../src/libwebp.a ../../imageio/libimageio_util.a
FUZZERS = advanced_api_fuzzer animation_api_fuzzer animencoder_fuzzer
FUZZERS += demux_api_fuzzer enc_dec_fuzzer simple_api_fuzzer
FUZZERS += animdecoder_fuzzer demux_api_fuzzer enc_dec_fuzzer simple_api_fuzzer
%.o: %.c %.cc fuzz_utils.h img_alpha.h img_grid.h img_peak.h
all: $(FUZZERS)