1 // Copyright 2019 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <cstddef>
16 #include <cstdint>
17 #include <cstdlib>
18 #include <string>
19
20 #include <fuzzer/FuzzedDataProvider.h>
21
22 #include "zopfli.h"
23
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)24 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
25 if (size > 8192)
26 return 0;
27
28 FuzzedDataProvider stream(data, size);
29
30 ZopfliOptions options;
31 ZopfliInitOptions(&options);
32
33 const ZopfliFormat format = stream.PickValueInArray(
34 {ZOPFLI_FORMAT_GZIP, ZOPFLI_FORMAT_ZLIB, ZOPFLI_FORMAT_DEFLATE});
35
36 unsigned char* outbuf = nullptr;
37 size_t outsize = 0;
38 std::vector<unsigned char> input =
39 stream.ConsumeRemainingBytes<unsigned char>();
40
41 ZopfliCompress(&options, format, input.data(), input.size(), &outbuf,
42 &outsize);
43
44 if (outbuf != nullptr) {
45 free(outbuf);
46 }
47
48 return 0;
49 }
50