64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/* This is a fuzz test of the permessage-deflate module */
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#define WIN32_EXPORT
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#include <cstdio>
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#include <string>
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#include <bitset>
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/* We test the permessage deflate module */
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#include "../src/PerMessageDeflate.h"
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#include "helpers.h"
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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/* First byte determines what compressor to use */
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if (size >= 1) {
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int compressors[] = {
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uWS::DEDICATED_COMPRESSOR_3KB,
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uWS::DEDICATED_COMPRESSOR_4KB,
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uWS::DEDICATED_COMPRESSOR_8KB,
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uWS::DEDICATED_COMPRESSOR_16KB,
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uWS::DEDICATED_COMPRESSOR_32KB,
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uWS::DEDICATED_COMPRESSOR_64KB,
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uWS::DEDICATED_COMPRESSOR_128KB,
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uWS::DEDICATED_COMPRESSOR_256KB
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};
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auto compressor = compressors[data[0] % 8];
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data++;
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size--;
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/* Bits 0 - 256 are okay */
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std::bitset<257> b;
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/* If we could specify LARGE_BUFFER_SIZE small here we could force it to inflate in chunks,
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* triggering more line coverage. Currently it is set to 16kb which is always too much */
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struct StaticData {
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uWS::DeflationStream deflationStream;
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uWS::ZlibContext zlibContext;
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uWS::InflationStream inflationStream;
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} staticData = {compressor};
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/* Why is this padded? */
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makeChunked(makePadded(data, size), size, [&staticData, &b](const uint8_t *data, size_t size) {
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auto [inflation, valid] = staticData.inflationStream.inflate(&staticData.zlibContext, std::string_view((char *) data, size), 256);
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/* Trigger ASAN flaws if length is more than 256 */
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b.set(inflation.length());
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});
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makeChunked(makePadded(data, size), size, [&staticData](const uint8_t *data, size_t size) {
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/* Always reset */
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staticData.deflationStream.deflate(&staticData.zlibContext, std::string_view((char *) data, size), true);
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});
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}
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return 0;
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}
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