1 // Copyright 2017 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <stddef.h> 6 #include <stdint.h> 7 #include <string.h> 8 #include <cassert> 9 #include <vector> 10 11 #include "third_party/zlib/zlib.h" 12 13 static Bytef buffer[256 * 1024] = {0}; 14 15 // Entry point for LibFuzzer. LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)16extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { 17 // We need to strip the 'const' for zlib 18 std::vector<unsigned char> input_buffer{data, data+size}; 19 20 uLongf buffer_length = static_cast<uLongf>(sizeof(buffer)); 21 22 z_stream stream; 23 stream.next_in = input_buffer.data(); 24 stream.avail_in = size; 25 stream.total_in = size; 26 stream.next_out = buffer; 27 stream.avail_out = buffer_length; 28 stream.total_out = buffer_length; 29 stream.zalloc = Z_NULL; 30 stream.zfree = Z_NULL; 31 32 if (Z_OK != inflateInit(&stream)) { 33 inflateEnd(&stream); 34 assert(false); 35 } 36 37 inflate(&stream, Z_NO_FLUSH); 38 inflateEnd(&stream); 39 40 return 0; 41 } 42