1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// Copyright 2019 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. 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
// OWNER 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.
//
// libFuzzer harness for fuzzing snappy compression code.
#include <stddef.h>
#include <stdint.h>
#include <cassert>
#include <string>
#include "snappy.h"
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
std::string input(reinterpret_cast<const char*>(data), size);
for (int level = snappy::CompressionOptions::MinCompressionLevel();
level <= snappy::CompressionOptions::MaxCompressionLevel(); ++level) {
std::string compressed;
size_t compressed_size =
snappy::Compress(input.data(), input.size(), &compressed,
snappy::CompressionOptions{/*level=*/level});
(void)compressed_size; // Variable only used in debug builds.
assert(compressed_size == compressed.size());
assert(compressed.size() <= snappy::MaxCompressedLength(input.size()));
assert(
snappy::IsValidCompressedBuffer(compressed.data(), compressed.size()));
std::string uncompressed_after_compress;
bool uncompress_succeeded = snappy::Uncompress(
compressed.data(), compressed.size(), &uncompressed_after_compress);
(void)uncompress_succeeded; // Variable only used in debug builds.
assert(uncompress_succeeded);
assert(input == uncompressed_after_compress);
}
return 0;
}
|
