1637 lines
75 KiB
C
1637 lines
75 KiB
C
/**
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* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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/*-************************************
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* Compiler specific
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**************************************/
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#ifdef _MSC_VER /* Visual Studio */
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# define _CRT_SECURE_NO_WARNINGS /* fgets */
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# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
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# pragma warning(disable : 4146) /* disable: C4146: minus unsigned expression */
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#endif
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/*-************************************
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* Includes
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**************************************/
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#include <stdlib.h> /* free */
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#include <stdio.h> /* fgets, sscanf */
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#include <time.h> /* clock_t, clock() */
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#include <string.h> /* strcmp */
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#include <assert.h> /* assert */
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#include "mem.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem, ZSTD_getDictID_fromFrame */
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#include "zstd.h" /* ZSTD_compressBound */
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#include "zstd_errors.h" /* ZSTD_error_srcSize_wrong */
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#include "zstdmt_compress.h"
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#include "zdict.h" /* ZDICT_trainFromBuffer */
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#include "datagen.h" /* RDG_genBuffer */
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#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
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#include "xxhash.h" /* XXH64_* */
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/*-************************************
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* Constants
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**************************************/
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#define KB *(1U<<10)
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#define MB *(1U<<20)
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#define GB *(1U<<30)
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static const U32 nbTestsDefault = 10000;
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static const U32 g_cLevelMax_smallTests = 10;
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#define COMPRESSIBLE_NOISE_LENGTH (10 MB)
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#define FUZ_COMPRESSIBILITY_DEFAULT 50
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static const U32 prime32 = 2654435761U;
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/*-************************************
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* Display Macros
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**************************************/
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { \
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DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stderr); }
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static U32 g_displayLevel = 2;
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#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
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if ((FUZ_GetClockSpan(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
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{ g_displayClock = clock(); DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stderr); } }
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static const clock_t g_refreshRate = CLOCKS_PER_SEC / 6;
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static clock_t g_displayClock = 0;
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static clock_t g_clockTime = 0;
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/*-*******************************************************
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* Fuzzer functions
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*********************************************************/
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#define MAX(a,b) ((a)>(b)?(a):(b))
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static clock_t FUZ_GetClockSpan(clock_t clockStart)
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{
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return clock() - clockStart; /* works even when overflow. Max span ~ 30 mn */
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}
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/*! FUZ_rand() :
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@return : a 27 bits random value, from a 32-bits `seed`.
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`seed` is also modified */
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#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
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unsigned int FUZ_rand(unsigned int* seedPtr)
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{
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static const U32 prime2 = 2246822519U;
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U32 rand32 = *seedPtr;
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rand32 *= prime32;
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rand32 += prime2;
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rand32 = FUZ_rotl32(rand32, 13);
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*seedPtr = rand32;
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return rand32 >> 5;
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}
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static void* allocFunction(void* opaque, size_t size)
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{
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void* address = malloc(size);
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(void)opaque;
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return address;
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}
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static void freeFunction(void* opaque, void* address)
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{
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(void)opaque;
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free(address);
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}
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/*======================================================
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* Basic Unit tests
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======================================================*/
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typedef struct {
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void* start;
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size_t size;
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size_t filled;
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} buffer_t;
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static const buffer_t g_nullBuffer = { NULL, 0 , 0 };
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static buffer_t FUZ_createDictionary(const void* src, size_t srcSize, size_t blockSize, size_t requestedDictSize)
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{
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buffer_t dict = { NULL, 0, 0 };
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size_t const nbBlocks = (srcSize + (blockSize-1)) / blockSize;
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size_t* const blockSizes = (size_t*) malloc(nbBlocks * sizeof(size_t));
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if (!blockSizes) return dict;
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dict.start = malloc(requestedDictSize);
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if (!dict.start) { free(blockSizes); return dict; }
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{ size_t nb;
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for (nb=0; nb<nbBlocks-1; nb++) blockSizes[nb] = blockSize;
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blockSizes[nbBlocks-1] = srcSize - (blockSize * (nbBlocks-1));
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}
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{ size_t const dictSize = ZDICT_trainFromBuffer(dict.start, requestedDictSize, src, blockSizes, (unsigned)nbBlocks);
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free(blockSizes);
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if (ZDICT_isError(dictSize)) { free(dict.start); return g_nullBuffer; }
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dict.size = requestedDictSize;
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dict.filled = dictSize;
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return dict; /* how to return dictSize ? */
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}
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}
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static void FUZ_freeDictionary(buffer_t dict)
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{
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free(dict.start);
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}
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static int basicUnitTests(U32 seed, double compressibility, ZSTD_customMem customMem)
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{
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size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH;
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void* CNBuffer = malloc(CNBufferSize);
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size_t const skippableFrameSize = 11;
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size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH);
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void* compressedBuffer = malloc(compressedBufferSize);
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size_t const decodedBufferSize = CNBufferSize;
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void* decodedBuffer = malloc(decodedBufferSize);
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size_t cSize;
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int testResult = 0;
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U32 testNb = 1;
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ZSTD_CStream* zc = ZSTD_createCStream_advanced(customMem);
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ZSTD_DStream* zd = ZSTD_createDStream_advanced(customMem);
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ZSTD_inBuffer inBuff, inBuff2;
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ZSTD_outBuffer outBuff;
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buffer_t dictionary = g_nullBuffer;
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size_t const dictSize = 128 KB;
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unsigned dictID = 0;
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/* Create compressible test buffer */
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if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd) {
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DISPLAY("Not enough memory, aborting \n");
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goto _output_error;
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}
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RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed);
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/* Create dictionary */
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MEM_STATIC_ASSERT(COMPRESSIBLE_NOISE_LENGTH >= 4 MB);
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dictionary = FUZ_createDictionary(CNBuffer, 4 MB, 4 KB, 40 KB);
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if (!dictionary.start) {
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DISPLAY("Error creating dictionary, aborting \n");
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goto _output_error;
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}
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dictID = ZDICT_getDictID(dictionary.start, dictionary.filled);
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/* generate skippable frame */
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MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START);
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MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize);
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cSize = skippableFrameSize + 8;
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/* Basic compression test */
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DISPLAYLEVEL(3, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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{ size_t const r = ZSTD_initCStream_usingDict(zc, CNBuffer, dictSize, 1);
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if (ZSTD_isError(r)) goto _output_error; }
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = compressedBufferSize;
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outBuff.pos = 0;
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inBuff.src = CNBuffer;
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inBuff.size = CNBufferSize;
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inBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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cSize += outBuff.pos;
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DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
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/* context size functions */
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DISPLAYLEVEL(3, "test%3i : estimate CStream size : ", testNb++);
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{ ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictSize);
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size_t const s = ZSTD_estimateCStreamSize_advanced(cParams)
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/* uses ZSTD_initCStream_usingDict() */
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+ ZSTD_estimateCDictSize_advanced(dictSize, cParams, 0);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
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}
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DISPLAYLEVEL(3, "test%3i : check actual CStream size : ", testNb++);
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{ size_t const s = ZSTD_sizeof_CStream(zc);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
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}
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/* Attempt bad compression parameters */
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DISPLAYLEVEL(3, "test%3i : use bad compression parameters : ", testNb++);
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{ size_t r;
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ZSTD_parameters params = ZSTD_getParams(1, 0, 0);
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params.cParams.searchLength = 2;
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r = ZSTD_initCStream_advanced(zc, NULL, 0, params, 0);
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if (!ZSTD_isError(r)) goto _output_error;
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DISPLAYLEVEL(3, "init error : %s \n", ZSTD_getErrorName(r));
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}
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/* skippable frame test */
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DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++);
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if (ZSTD_isError( ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize) ))
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goto _output_error;
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inBuff.src = compressedBuffer;
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inBuff.size = cSize;
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inBuff.pos = 0;
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outBuff.dst = decodedBuffer;
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outBuff.size = CNBufferSize;
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outBuff.pos = 0;
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{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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DISPLAYLEVEL(5, " ( ZSTD_decompressStream => %u ) ", (U32)r);
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if (r != 0) goto _output_error;
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}
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if (outBuff.pos != 0) goto _output_error; /* skippable frame output len is 0 */
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DISPLAYLEVEL(3, "OK \n");
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/* Basic decompression test */
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inBuff2 = inBuff;
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DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
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{ size_t const r = ZSTD_setDStreamParameter(zd, DStream_p_maxWindowSize, 1000000000); /* large limit */
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if (ZSTD_isError(r)) goto _output_error; }
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{ size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
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if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(3, "OK \n");
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/* Re-use without init */
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DISPLAYLEVEL(3, "test%3i : decompress again without init (re-use previous settings): ", testNb++);
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outBuff.pos = 0;
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{ size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff2);
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if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
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if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(3, "OK \n");
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/* check regenerated data is byte exact */
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DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
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{ size_t i;
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for (i=0; i<CNBufferSize; i++) {
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if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;
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} }
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DISPLAYLEVEL(3, "OK \n");
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/* context size functions */
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DISPLAYLEVEL(3, "test%3i : estimate DStream size : ", testNb++);
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{ ZSTD_frameHeader fhi;
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const void* cStart = (char*)compressedBuffer + (skippableFrameSize + 8);
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size_t const gfhError = ZSTD_getFrameHeader(&fhi, cStart, cSize);
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if (gfhError!=0) goto _output_error;
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DISPLAYLEVEL(5, " (windowSize : %u) ", (U32)fhi.windowSize);
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{ size_t const s = ZSTD_estimateDStreamSize(fhi.windowSize)
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/* uses ZSTD_initDStream_usingDict() */
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+ ZSTD_estimateDDictSize(dictSize, 0);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
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} }
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DISPLAYLEVEL(3, "test%3i : check actual DStream size : ", testNb++);
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{ size_t const s = ZSTD_sizeof_DStream(zd);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
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}
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/* Byte-by-byte decompression test */
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DISPLAYLEVEL(3, "test%3i : decompress byte-by-byte : ", testNb++);
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{ /* skippable frame */
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size_t r = 1;
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ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
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inBuff.src = compressedBuffer;
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outBuff.dst = decodedBuffer;
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inBuff.pos = 0;
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outBuff.pos = 0;
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while (r) { /* skippable frame */
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inBuff.size = inBuff.pos + 1;
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outBuff.size = outBuff.pos + 1;
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r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error;
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}
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/* normal frame */
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ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
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r=1;
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while (r) {
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inBuff.size = inBuff.pos + 1;
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outBuff.size = outBuff.pos + 1;
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r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error;
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}
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}
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if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(3, "OK \n");
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/* check regenerated data is byte exact */
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DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
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{ size_t i;
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for (i=0; i<CNBufferSize; i++) {
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if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;;
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} }
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DISPLAYLEVEL(3, "OK \n");
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/* _srcSize compression test */
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DISPLAYLEVEL(3, "test%3i : compress_srcSize %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZSTD_initCStream_srcSize(zc, 1, CNBufferSize);
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outBuff.dst = (char*)(compressedBuffer);
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outBuff.size = compressedBufferSize;
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outBuff.pos = 0;
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inBuff.src = CNBuffer;
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inBuff.size = CNBufferSize;
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inBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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{ unsigned long long origSize = ZSTD_findDecompressedSize(outBuff.dst, outBuff.pos);
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if ((size_t)origSize != CNBufferSize) goto _output_error; } /* exact original size must be present */
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DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
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/* wrong _srcSize compression test */
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DISPLAYLEVEL(3, "test%3i : wrong srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1);
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ZSTD_initCStream_srcSize(zc, 1, CNBufferSize-1);
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outBuff.dst = (char*)(compressedBuffer);
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outBuff.size = compressedBufferSize;
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outBuff.pos = 0;
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inBuff.src = CNBuffer;
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inBuff.size = CNBufferSize;
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inBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */
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DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); }
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/* Complex context re-use scenario */
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DISPLAYLEVEL(3, "test%3i : context re-use : ", testNb++);
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ZSTD_freeCStream(zc);
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zc = ZSTD_createCStream_advanced(customMem);
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if (zc==NULL) goto _output_error; /* memory allocation issue */
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/* use 1 */
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{ size_t const inSize = 513;
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DISPLAYLEVEL(5, "use1 ");
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ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
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inBuff.src = CNBuffer;
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inBuff.size = inSize;
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inBuff.pos = 0;
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = ZSTD_compressBound(inSize);
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outBuff.pos = 0;
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DISPLAYLEVEL(5, "compress1 ");
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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DISPLAYLEVEL(5, "end1 ");
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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}
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/* use 2 */
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{ size_t const inSize = 1025; /* will not continue, because tables auto-adjust and are therefore different size */
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DISPLAYLEVEL(5, "use2 ");
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ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
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inBuff.src = CNBuffer;
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inBuff.size = inSize;
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inBuff.pos = 0;
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = ZSTD_compressBound(inSize);
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outBuff.pos = 0;
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DISPLAYLEVEL(5, "compress2 ");
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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DISPLAYLEVEL(5, "end2 ");
|
|
{ size_t const r = ZSTD_endStream(zc, &outBuff);
|
|
if (r != 0) goto _output_error; } /* error, or some data not flushed */
|
|
}
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
|
|
/* CDict scenario */
|
|
DISPLAYLEVEL(3, "test%3i : digested dictionary : ", testNb++);
|
|
{ ZSTD_CDict* const cdict = ZSTD_createCDict(dictionary.start, dictionary.filled, 1);
|
|
size_t const initError = ZSTD_initCStream_usingCDict(zc, cdict);
|
|
if (ZSTD_isError(initError)) goto _output_error;
|
|
cSize = 0;
|
|
outBuff.dst = compressedBuffer;
|
|
outBuff.size = compressedBufferSize;
|
|
outBuff.pos = 0;
|
|
inBuff.src = CNBuffer;
|
|
inBuff.size = CNBufferSize;
|
|
inBuff.pos = 0;
|
|
{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
|
|
if (ZSTD_isError(r)) goto _output_error; }
|
|
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
|
|
{ size_t const r = ZSTD_endStream(zc, &outBuff);
|
|
if (r != 0) goto _output_error; } /* error, or some data not flushed */
|
|
cSize = outBuff.pos;
|
|
ZSTD_freeCDict(cdict);
|
|
DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
|
|
}
|
|
|
|
DISPLAYLEVEL(3, "test%3i : check CStream size : ", testNb++);
|
|
{ size_t const s = ZSTD_sizeof_CStream(zc);
|
|
if (ZSTD_isError(s)) goto _output_error;
|
|
DISPLAYLEVEL(3, "OK (%u bytes) \n", (U32)s);
|
|
}
|
|
|
|
DISPLAYLEVEL(4, "test%3i : check Dictionary ID : ", testNb++);
|
|
{ unsigned const dID = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
|
|
if (dID != dictID) goto _output_error;
|
|
DISPLAYLEVEL(4, "OK (%u) \n", dID);
|
|
}
|
|
|
|
/* DDict scenario */
|
|
DISPLAYLEVEL(3, "test%3i : decompress %u bytes with digested dictionary : ", testNb++, (U32)CNBufferSize);
|
|
{ ZSTD_DDict* const ddict = ZSTD_createDDict(dictionary.start, dictionary.filled);
|
|
size_t const initError = ZSTD_initDStream_usingDDict(zd, ddict);
|
|
if (ZSTD_isError(initError)) goto _output_error;
|
|
inBuff.src = compressedBuffer;
|
|
inBuff.size = cSize;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = decodedBuffer;
|
|
outBuff.size = CNBufferSize;
|
|
outBuff.pos = 0;
|
|
{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (r != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
|
|
if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
|
|
if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
|
|
ZSTD_freeDDict(ddict);
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
}
|
|
|
|
/* test ZSTD_setDStreamParameter() resilience */
|
|
DISPLAYLEVEL(3, "test%3i : wrong parameter for ZSTD_setDStreamParameter(): ", testNb++);
|
|
{ size_t const r = ZSTD_setDStreamParameter(zd, (ZSTD_DStreamParameter_e)999, 1); /* large limit */
|
|
if (!ZSTD_isError(r)) goto _output_error; }
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
|
|
/* Memory restriction */
|
|
DISPLAYLEVEL(3, "test%3i : maxWindowSize < frame requirement : ", testNb++);
|
|
ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize);
|
|
{ size_t const r = ZSTD_setDStreamParameter(zd, DStream_p_maxWindowSize, 1000); /* too small limit */
|
|
if (ZSTD_isError(r)) goto _output_error; }
|
|
inBuff.src = compressedBuffer;
|
|
inBuff.size = cSize;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = decodedBuffer;
|
|
outBuff.size = CNBufferSize;
|
|
outBuff.pos = 0;
|
|
{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (!ZSTD_isError(r)) goto _output_error; /* must fail : frame requires > 100 bytes */
|
|
DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); }
|
|
|
|
DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_usingCDict_advanced with masked dictID : ", testNb++);
|
|
{ ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictionary.filled);
|
|
ZSTD_frameParameters const fParams = { 1 /* contentSize */, 1 /* checksum */, 1 /* noDictID */};
|
|
ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, 1 /* byReference */, ZSTD_dm_auto, cParams, customMem);
|
|
size_t const initError = ZSTD_initCStream_usingCDict_advanced(zc, cdict, fParams, CNBufferSize);
|
|
if (ZSTD_isError(initError)) goto _output_error;
|
|
cSize = 0;
|
|
outBuff.dst = compressedBuffer;
|
|
outBuff.size = compressedBufferSize;
|
|
outBuff.pos = 0;
|
|
inBuff.src = CNBuffer;
|
|
inBuff.size = CNBufferSize;
|
|
inBuff.pos = 0;
|
|
{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
|
|
if (ZSTD_isError(r)) goto _output_error; }
|
|
if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
|
|
{ size_t const r = ZSTD_endStream(zc, &outBuff);
|
|
if (r != 0) goto _output_error; } /* error, or some data not flushed */
|
|
cSize = outBuff.pos;
|
|
ZSTD_freeCDict(cdict);
|
|
DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBufferSize*100);
|
|
}
|
|
|
|
DISPLAYLEVEL(3, "test%3i : try retrieving dictID from frame : ", testNb++);
|
|
{ U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize);
|
|
if (did != 0) goto _output_error;
|
|
}
|
|
DISPLAYLEVEL(3, "OK (not detected) \n");
|
|
|
|
DISPLAYLEVEL(3, "test%3i : decompress without dictionary : ", testNb++);
|
|
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize);
|
|
if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */
|
|
DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r));
|
|
}
|
|
|
|
/* Empty srcSize */
|
|
DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced with pledgedSrcSize=0 and dict : ", testNb++);
|
|
{ ZSTD_parameters params = ZSTD_getParams(5, 0, 0);
|
|
params.fParams.contentSizeFlag = 1;
|
|
ZSTD_initCStream_advanced(zc, dictionary.start, dictionary.filled, params, 0);
|
|
} /* cstream advanced shall write content size = 0 */
|
|
inBuff.src = CNBuffer;
|
|
inBuff.size = 0;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = compressedBuffer;
|
|
outBuff.size = compressedBufferSize;
|
|
outBuff.pos = 0;
|
|
if (ZSTD_isError(ZSTD_compressStream(zc, &outBuff, &inBuff))) goto _output_error;
|
|
if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
|
|
cSize = outBuff.pos;
|
|
if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error;
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
|
|
DISPLAYLEVEL(3, "test%3i : pledgedSrcSize == 0 behaves properly : ", testNb++);
|
|
{ ZSTD_parameters params = ZSTD_getParams(5, 0, 0);
|
|
params.fParams.contentSizeFlag = 1;
|
|
ZSTD_initCStream_advanced(zc, NULL, 0, params, 0);
|
|
} /* cstream advanced shall write content size = 0 */
|
|
inBuff.src = CNBuffer;
|
|
inBuff.size = 0;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = compressedBuffer;
|
|
outBuff.size = compressedBufferSize;
|
|
outBuff.pos = 0;
|
|
if (ZSTD_isError(ZSTD_compressStream(zc, &outBuff, &inBuff))) goto _output_error;
|
|
if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
|
|
cSize = outBuff.pos;
|
|
if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error;
|
|
|
|
ZSTD_resetCStream(zc, 0); /* resetCStream should treat 0 as unknown */
|
|
inBuff.src = CNBuffer;
|
|
inBuff.size = 0;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = compressedBuffer;
|
|
outBuff.size = compressedBufferSize;
|
|
outBuff.pos = 0;
|
|
if (ZSTD_isError(ZSTD_compressStream(zc, &outBuff, &inBuff))) goto _output_error;
|
|
if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error;
|
|
cSize = outBuff.pos;
|
|
if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
|
|
/* Overlen overwriting window data bug */
|
|
DISPLAYLEVEL(3, "test%3i : wildcopy doesn't overwrite potential match data : ", testNb++);
|
|
{ /* This test has a window size of 1024 bytes and consists of 3 blocks:
|
|
1. 'a' repeated 517 times
|
|
2. 'b' repeated 516 times
|
|
3. a compressed block with no literals and 3 sequence commands:
|
|
litlength = 0, offset = 24, match length = 24
|
|
litlength = 0, offset = 24, match length = 3 (this one creates an overlength write of length 2*WILDCOPY_OVERLENGTH - 3)
|
|
litlength = 0, offset = 1021, match length = 3 (this one will try to read from overwritten data if the buffer is too small) */
|
|
|
|
const char* testCase =
|
|
"\x28\xB5\x2F\xFD\x04\x00\x4C\x00\x00\x10\x61\x61\x01\x00\x00\x2A"
|
|
"\x80\x05\x44\x00\x00\x08\x62\x01\x00\x00\x2A\x20\x04\x5D\x00\x00"
|
|
"\x00\x03\x40\x00\x00\x64\x60\x27\xB0\xE0\x0C\x67\x62\xCE\xE0";
|
|
ZSTD_DStream* zds = ZSTD_createDStream();
|
|
|
|
ZSTD_initDStream(zds);
|
|
inBuff.src = testCase;
|
|
inBuff.size = 47;
|
|
inBuff.pos = 0;
|
|
outBuff.dst = decodedBuffer;
|
|
outBuff.size = CNBufferSize;
|
|
outBuff.pos = 0;
|
|
|
|
while (inBuff.pos < inBuff.size) {
|
|
size_t const r = ZSTD_decompressStream(zds, &outBuff, &inBuff);
|
|
/* Bug will cause checksum to fail */
|
|
if (ZSTD_isError(r)) goto _output_error;
|
|
}
|
|
|
|
ZSTD_freeDStream(zds);
|
|
}
|
|
DISPLAYLEVEL(3, "OK \n");
|
|
|
|
_end:
|
|
FUZ_freeDictionary(dictionary);
|
|
ZSTD_freeCStream(zc);
|
|
ZSTD_freeDStream(zd);
|
|
free(CNBuffer);
|
|
free(compressedBuffer);
|
|
free(decodedBuffer);
|
|
return testResult;
|
|
|
|
_output_error:
|
|
testResult = 1;
|
|
DISPLAY("Error detected in Unit tests ! \n");
|
|
goto _end;
|
|
}
|
|
|
|
|
|
/* ====== Fuzzer tests ====== */
|
|
|
|
static size_t findDiff(const void* buf1, const void* buf2, size_t max)
|
|
{
|
|
const BYTE* b1 = (const BYTE*)buf1;
|
|
const BYTE* b2 = (const BYTE*)buf2;
|
|
size_t u;
|
|
for (u=0; u<max; u++) {
|
|
if (b1[u] != b2[u]) break;
|
|
}
|
|
DISPLAY("Error at position %u / %u \n", (U32)u, (U32)max);
|
|
DISPLAY(" %02X %02X %02X :%02X: %02X %02X %02X %02X %02X \n",
|
|
b1[u-3], b1[u-2], b1[u-1], b1[u-0], b1[u+1], b1[u+2], b1[u+3], b1[u+4], b1[u+5]);
|
|
DISPLAY(" %02X %02X %02X :%02X: %02X %02X %02X %02X %02X \n",
|
|
b2[u-3], b2[u-2], b2[u-1], b2[u-0], b2[u+1], b2[u+2], b2[u+3], b2[u+4], b2[u+5]);
|
|
return u;
|
|
}
|
|
|
|
static size_t FUZ_rLogLength(U32* seed, U32 logLength)
|
|
{
|
|
size_t const lengthMask = ((size_t)1 << logLength) - 1;
|
|
return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
|
|
}
|
|
|
|
static size_t FUZ_randomLength(U32* seed, U32 maxLog)
|
|
{
|
|
U32 const logLength = FUZ_rand(seed) % maxLog;
|
|
return FUZ_rLogLength(seed, logLength);
|
|
}
|
|
|
|
#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
|
|
|
|
#define CHECK(cond, ...) { \
|
|
if (cond) { \
|
|
DISPLAY("Error => "); \
|
|
DISPLAY(__VA_ARGS__); \
|
|
DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
|
|
goto _output_error; \
|
|
} }
|
|
|
|
#define CHECK_Z(f) { \
|
|
size_t const err = f; \
|
|
if (ZSTD_isError(err)) { \
|
|
DISPLAY("Error => %s : %s ", \
|
|
#f, ZSTD_getErrorName(err)); \
|
|
DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \
|
|
goto _output_error; \
|
|
} }
|
|
|
|
static int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests)
|
|
{
|
|
U32 const maxSrcLog = bigTests ? 24 : 22;
|
|
static const U32 maxSampleLog = 19;
|
|
size_t const srcBufferSize = (size_t)1<<maxSrcLog;
|
|
BYTE* cNoiseBuffer[5];
|
|
size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog);
|
|
BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
|
|
size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
|
|
BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
|
|
size_t const dstBufferSize = srcBufferSize;
|
|
BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
|
|
U32 result = 0;
|
|
U32 testNb = 0;
|
|
U32 coreSeed = seed;
|
|
ZSTD_CStream* zc = ZSTD_createCStream(); /* will be reset sometimes */
|
|
ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */
|
|
ZSTD_DStream* const zd_noise = ZSTD_createDStream();
|
|
clock_t const startClock = clock();
|
|
const BYTE* dict=NULL; /* can keep same dict on 2 consecutive tests */
|
|
size_t dictSize = 0;
|
|
U32 oldTestLog = 0;
|
|
U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel() : g_cLevelMax_smallTests;
|
|
|
|
/* allocations */
|
|
cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
|
|
CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
|
|
!copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
|
|
"Not enough memory, fuzzer tests cancelled");
|
|
|
|
/* Create initial samples */
|
|
RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
|
|
RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
|
|
RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
|
|
RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
|
|
RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
|
|
memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
|
|
ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
|
|
|
|
/* catch up testNb */
|
|
for (testNb=1; testNb < startTest; testNb++)
|
|
FUZ_rand(&coreSeed);
|
|
|
|
/* test loop */
|
|
for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
|
|
U32 lseed;
|
|
const BYTE* srcBuffer;
|
|
size_t totalTestSize, totalGenSize, cSize;
|
|
XXH64_state_t xxhState;
|
|
U64 crcOrig;
|
|
U32 resetAllowed = 1;
|
|
size_t maxTestSize;
|
|
|
|
/* init */
|
|
if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
|
|
else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
|
|
FUZ_rand(&coreSeed);
|
|
lseed = coreSeed ^ prime32;
|
|
|
|
/* states full reset (deliberately not synchronized) */
|
|
/* some issues can only happen when reusing states */
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 131) {
|
|
ZSTD_freeCStream(zc);
|
|
zc = ZSTD_createCStream();
|
|
CHECK(zc==NULL, "ZSTD_createCStream : allocation error");
|
|
resetAllowed=0;
|
|
}
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 132) {
|
|
ZSTD_freeDStream(zd);
|
|
zd = ZSTD_createDStream();
|
|
CHECK(zd==NULL, "ZSTD_createDStream : allocation error");
|
|
CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */
|
|
}
|
|
|
|
/* srcBuffer selection [0-4] */
|
|
{ U32 buffNb = FUZ_rand(&lseed) & 0x7F;
|
|
if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
|
|
else {
|
|
buffNb >>= 3;
|
|
if (buffNb & 7) {
|
|
const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} else {
|
|
const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} }
|
|
srcBuffer = cNoiseBuffer[buffNb];
|
|
}
|
|
|
|
/* compression init */
|
|
if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
|
|
&& oldTestLog /* at least one test happened */ && resetAllowed) {
|
|
maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
|
|
if (maxTestSize >= srcBufferSize)
|
|
maxTestSize = srcBufferSize-1;
|
|
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
|
|
CHECK_Z( ZSTD_resetCStream(zc, pledgedSrcSize) );
|
|
}
|
|
} else {
|
|
U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const cLevelCandidate = ( FUZ_rand(&lseed) %
|
|
(ZSTD_maxCLevel() -
|
|
(MAX(testLog, dictLog) / 3)))
|
|
+ 1;
|
|
U32 const cLevel = MIN(cLevelCandidate, cLevelMax);
|
|
maxTestSize = FUZ_rLogLength(&lseed, testLog);
|
|
oldTestLog = testLog;
|
|
/* random dictionary selection */
|
|
dictSize = ((FUZ_rand(&lseed)&7)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
|
|
{ size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
|
|
dict = srcBuffer + dictStart;
|
|
}
|
|
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
|
|
ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize);
|
|
params.fParams.checksumFlag = FUZ_rand(&lseed) & 1;
|
|
params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1;
|
|
CHECK_Z ( ZSTD_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) );
|
|
} }
|
|
|
|
/* multi-segments compression test */
|
|
XXH64_reset(&xxhState, 0);
|
|
{ ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
|
|
U32 n;
|
|
for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) {
|
|
/* compress random chunks into randomly sized dst buffers */
|
|
{ size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const srcSize = MIN (maxTestSize-totalTestSize, randomSrcSize);
|
|
size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
|
|
outBuff.size = outBuff.pos + dstBuffSize;
|
|
|
|
CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) );
|
|
|
|
XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
|
|
memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
|
|
totalTestSize += inBuff.pos;
|
|
}
|
|
|
|
/* random flush operation, to mess around */
|
|
if ((FUZ_rand(&lseed) & 15) == 0) {
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
CHECK_Z( ZSTD_flushStream(zc, &outBuff) );
|
|
} }
|
|
|
|
/* final frame epilogue */
|
|
{ size_t remainingToFlush = (size_t)(-1);
|
|
while (remainingToFlush) {
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
remainingToFlush = ZSTD_endStream(zc, &outBuff);
|
|
CHECK (ZSTD_isError(remainingToFlush), "end error : %s", ZSTD_getErrorName(remainingToFlush));
|
|
} }
|
|
crcOrig = XXH64_digest(&xxhState);
|
|
cSize = outBuff.pos;
|
|
}
|
|
|
|
/* multi - fragments decompression test */
|
|
if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
|
|
CHECK_Z ( ZSTD_resetDStream(zd) );
|
|
} else {
|
|
CHECK_Z ( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
|
|
}
|
|
{ size_t decompressionResult = 1;
|
|
ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
for (totalGenSize = 0 ; decompressionResult ; ) {
|
|
size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
|
|
inBuff.size = inBuff.pos + readCSrcSize;
|
|
outBuff.size = inBuff.pos + dstBuffSize;
|
|
decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult));
|
|
}
|
|
CHECK (decompressionResult != 0, "frame not fully decoded");
|
|
CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size")
|
|
CHECK (inBuff.pos != cSize, "compressed data should be fully read")
|
|
{ U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
|
|
if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
|
|
CHECK (crcDest!=crcOrig, "decompressed data corrupted");
|
|
} }
|
|
|
|
/*===== noisy/erroneous src decompression test =====*/
|
|
|
|
/* add some noise */
|
|
{ U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
|
|
U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
|
|
size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
|
|
size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
|
|
size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
|
|
memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
|
|
} }
|
|
|
|
/* try decompression on noisy data */
|
|
CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
|
|
{ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
while (outBuff.pos < dstBufferSize) {
|
|
size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
|
|
size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
inBuff.size = inBuff.pos + adjustedCSrcSize;
|
|
{ size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (ZSTD_isError(decompressError)) break; /* error correctly detected */
|
|
/* No forward progress possible */
|
|
if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
|
|
} } } }
|
|
DISPLAY("\r%u fuzzer tests completed \n", testNb);
|
|
|
|
_cleanup:
|
|
ZSTD_freeCStream(zc);
|
|
ZSTD_freeDStream(zd);
|
|
ZSTD_freeDStream(zd_noise);
|
|
free(cNoiseBuffer[0]);
|
|
free(cNoiseBuffer[1]);
|
|
free(cNoiseBuffer[2]);
|
|
free(cNoiseBuffer[3]);
|
|
free(cNoiseBuffer[4]);
|
|
free(copyBuffer);
|
|
free(cBuffer);
|
|
free(dstBuffer);
|
|
return result;
|
|
|
|
_output_error:
|
|
result = 1;
|
|
goto _cleanup;
|
|
}
|
|
|
|
|
|
/* Multi-threading version of fuzzer Tests */
|
|
static int fuzzerTests_MT(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests)
|
|
{
|
|
const U32 maxSrcLog = bigTests ? 24 : 22;
|
|
static const U32 maxSampleLog = 19;
|
|
size_t const srcBufferSize = (size_t)1<<maxSrcLog;
|
|
BYTE* cNoiseBuffer[5];
|
|
size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog);
|
|
BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
|
|
size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
|
|
BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
|
|
size_t const dstBufferSize = srcBufferSize;
|
|
BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
|
|
U32 result = 0;
|
|
U32 testNb = 0;
|
|
U32 coreSeed = seed;
|
|
ZSTDMT_CCtx* zc = ZSTDMT_createCCtx(2); /* will be reset sometimes */
|
|
ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */
|
|
ZSTD_DStream* const zd_noise = ZSTD_createDStream();
|
|
clock_t const startClock = clock();
|
|
const BYTE* dict=NULL; /* can keep same dict on 2 consecutive tests */
|
|
size_t dictSize = 0;
|
|
U32 oldTestLog = 0;
|
|
U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel() : g_cLevelMax_smallTests;
|
|
U32 const nbThreadsMax = bigTests ? 5 : 2;
|
|
|
|
/* allocations */
|
|
cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
|
|
CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
|
|
!copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
|
|
"Not enough memory, fuzzer tests cancelled");
|
|
|
|
/* Create initial samples */
|
|
RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
|
|
RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
|
|
RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
|
|
RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
|
|
RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
|
|
memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
|
|
ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
|
|
|
|
/* catch up testNb */
|
|
for (testNb=1; testNb < startTest; testNb++)
|
|
FUZ_rand(&coreSeed);
|
|
|
|
/* test loop */
|
|
for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
|
|
U32 lseed;
|
|
const BYTE* srcBuffer;
|
|
size_t totalTestSize, totalGenSize, cSize;
|
|
XXH64_state_t xxhState;
|
|
U64 crcOrig;
|
|
U32 resetAllowed = 1;
|
|
size_t maxTestSize;
|
|
|
|
/* init */
|
|
if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
|
|
else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
|
|
FUZ_rand(&coreSeed);
|
|
lseed = coreSeed ^ prime32;
|
|
|
|
/* states full reset (deliberately not synchronized) */
|
|
/* some issues can only happen when reusing states */
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 131) {
|
|
U32 const nbThreadsCandidate = (FUZ_rand(&lseed) % 6) + 1;
|
|
U32 const nbThreads = MIN(nbThreadsCandidate, nbThreadsMax);
|
|
DISPLAYLEVEL(5, "Creating new context with %u threads \n", nbThreads);
|
|
ZSTDMT_freeCCtx(zc);
|
|
zc = ZSTDMT_createCCtx(nbThreads);
|
|
CHECK(zc==NULL, "ZSTDMT_createCCtx allocation error")
|
|
resetAllowed=0;
|
|
}
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 132) {
|
|
ZSTD_freeDStream(zd);
|
|
zd = ZSTD_createDStream();
|
|
CHECK(zd==NULL, "ZSTDMT_createCCtx allocation error")
|
|
ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
|
|
}
|
|
|
|
/* srcBuffer selection [0-4] */
|
|
{ U32 buffNb = FUZ_rand(&lseed) & 0x7F;
|
|
if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
|
|
else {
|
|
buffNb >>= 3;
|
|
if (buffNb & 7) {
|
|
const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} else {
|
|
const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} }
|
|
srcBuffer = cNoiseBuffer[buffNb];
|
|
}
|
|
|
|
/* compression init */
|
|
if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
|
|
&& oldTestLog /* at least one test happened */ && resetAllowed) {
|
|
maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
|
|
if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1;
|
|
{ int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1;
|
|
CHECK_Z( ZSTDMT_initCStream(zc, compressionLevel) );
|
|
}
|
|
} else {
|
|
U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const cLevelCandidate = (FUZ_rand(&lseed) %
|
|
(ZSTD_maxCLevel() -
|
|
(MAX(testLog, dictLog) / 3))) +
|
|
1;
|
|
U32 const cLevel = MIN(cLevelCandidate, cLevelMax);
|
|
maxTestSize = FUZ_rLogLength(&lseed, testLog);
|
|
oldTestLog = testLog;
|
|
/* random dictionary selection */
|
|
dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
|
|
{ size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
|
|
dict = srcBuffer + dictStart;
|
|
}
|
|
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize;
|
|
ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize);
|
|
DISPLAYLEVEL(5, "Init with windowLog = %u and pledgedSrcSize = %u \n",
|
|
params.cParams.windowLog, (U32)pledgedSrcSize);
|
|
params.fParams.checksumFlag = FUZ_rand(&lseed) & 1;
|
|
params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1;
|
|
params.fParams.contentSizeFlag = pledgedSrcSize>0;
|
|
DISPLAYLEVEL(5, "checksumFlag : %u \n", params.fParams.checksumFlag);
|
|
CHECK_Z( ZSTDMT_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) );
|
|
CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_overlapSectionLog, FUZ_rand(&lseed) % 12) );
|
|
CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_sectionSize, FUZ_rand(&lseed) % (2*maxTestSize+1)) );
|
|
} }
|
|
|
|
/* multi-segments compression test */
|
|
XXH64_reset(&xxhState, 0);
|
|
{ ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
|
|
U32 n;
|
|
for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) {
|
|
/* compress random chunks into randomly sized dst buffers */
|
|
{ size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const srcSize = MIN (maxTestSize-totalTestSize, randomSrcSize);
|
|
size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
|
|
outBuff.size = outBuff.pos + dstBuffSize;
|
|
|
|
DISPLAYLEVEL(5, "Sending %u bytes to compress \n", (U32)srcSize);
|
|
CHECK_Z( ZSTDMT_compressStream(zc, &outBuff, &inBuff) );
|
|
DISPLAYLEVEL(5, "%u bytes read by ZSTDMT_compressStream \n", (U32)inBuff.pos);
|
|
|
|
XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
|
|
memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
|
|
totalTestSize += inBuff.pos;
|
|
}
|
|
|
|
/* random flush operation, to mess around */
|
|
if ((FUZ_rand(&lseed) & 15) == 0) {
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
DISPLAYLEVEL(5, "Flushing into dst buffer of size %u \n", (U32)adjustedDstSize);
|
|
CHECK_Z( ZSTDMT_flushStream(zc, &outBuff) );
|
|
} }
|
|
|
|
/* final frame epilogue */
|
|
{ size_t remainingToFlush = (size_t)(-1);
|
|
while (remainingToFlush) {
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
DISPLAYLEVEL(5, "Ending into dst buffer of size %u \n", (U32)adjustedDstSize);
|
|
remainingToFlush = ZSTDMT_endStream(zc, &outBuff);
|
|
CHECK (ZSTD_isError(remainingToFlush), "ZSTDMT_endStream error : %s", ZSTD_getErrorName(remainingToFlush));
|
|
DISPLAYLEVEL(5, "endStream : remainingToFlush : %u \n", (U32)remainingToFlush);
|
|
} }
|
|
crcOrig = XXH64_digest(&xxhState);
|
|
cSize = outBuff.pos;
|
|
DISPLAYLEVEL(5, "Frame completed : %u bytes \n", (U32)cSize);
|
|
}
|
|
|
|
/* multi - fragments decompression test */
|
|
if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
|
|
CHECK_Z( ZSTD_resetDStream(zd) );
|
|
} else {
|
|
CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
|
|
}
|
|
{ size_t decompressionResult = 1;
|
|
ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
for (totalGenSize = 0 ; decompressionResult ; ) {
|
|
size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
|
|
inBuff.size = inBuff.pos + readCSrcSize;
|
|
outBuff.size = inBuff.pos + dstBuffSize;
|
|
DISPLAYLEVEL(5, "ZSTD_decompressStream input %u bytes \n", (U32)readCSrcSize);
|
|
decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult));
|
|
DISPLAYLEVEL(5, "inBuff.pos = %u \n", (U32)readCSrcSize);
|
|
}
|
|
CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (U32)outBuff.pos, (U32)totalTestSize);
|
|
CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (U32)inBuff.pos, (U32)cSize);
|
|
{ U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
|
|
if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
|
|
CHECK (crcDest!=crcOrig, "decompressed data corrupted");
|
|
} }
|
|
|
|
/*===== noisy/erroneous src decompression test =====*/
|
|
|
|
/* add some noise */
|
|
{ U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
|
|
U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
|
|
size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
|
|
size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
|
|
size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
|
|
memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
|
|
} }
|
|
|
|
/* try decompression on noisy data */
|
|
CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
|
|
{ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
while (outBuff.pos < dstBufferSize) {
|
|
size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
|
|
size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
inBuff.size = inBuff.pos + adjustedCSrcSize;
|
|
{ size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (ZSTD_isError(decompressError)) break; /* error correctly detected */
|
|
/* No forward progress possible */
|
|
if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
|
|
} } } }
|
|
DISPLAY("\r%u fuzzer tests completed \n", testNb);
|
|
|
|
_cleanup:
|
|
ZSTDMT_freeCCtx(zc);
|
|
ZSTD_freeDStream(zd);
|
|
ZSTD_freeDStream(zd_noise);
|
|
free(cNoiseBuffer[0]);
|
|
free(cNoiseBuffer[1]);
|
|
free(cNoiseBuffer[2]);
|
|
free(cNoiseBuffer[3]);
|
|
free(cNoiseBuffer[4]);
|
|
free(copyBuffer);
|
|
free(cBuffer);
|
|
free(dstBuffer);
|
|
return result;
|
|
|
|
_output_error:
|
|
result = 1;
|
|
goto _cleanup;
|
|
}
|
|
|
|
|
|
/* Tests for ZSTD_compress_generic() API */
|
|
static int fuzzerTests_newAPI(U32 seed, U32 nbTests, unsigned startTest, double compressibility, int bigTests)
|
|
{
|
|
U32 const maxSrcLog = bigTests ? 24 : 22;
|
|
static const U32 maxSampleLog = 19;
|
|
size_t const srcBufferSize = (size_t)1<<maxSrcLog;
|
|
BYTE* cNoiseBuffer[5];
|
|
size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog);
|
|
BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize);
|
|
size_t const cBufferSize = ZSTD_compressBound(srcBufferSize);
|
|
BYTE* const cBuffer = (BYTE*)malloc (cBufferSize);
|
|
size_t const dstBufferSize = srcBufferSize;
|
|
BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize);
|
|
U32 result = 0;
|
|
U32 testNb = 0;
|
|
U32 coreSeed = seed;
|
|
ZSTD_CCtx* zc = ZSTD_createCCtx(); /* will be reset sometimes */
|
|
ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */
|
|
ZSTD_DStream* const zd_noise = ZSTD_createDStream();
|
|
clock_t const startClock = clock();
|
|
const BYTE* dict = NULL; /* can keep same dict on 2 consecutive tests */
|
|
size_t dictSize = 0;
|
|
U32 oldTestLog = 0;
|
|
U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel() : g_cLevelMax_smallTests;
|
|
U32 const nbThreadsMax = bigTests ? 5 : 1;
|
|
|
|
/* allocations */
|
|
cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
|
|
cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
|
|
CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
|
|
!copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise ,
|
|
"Not enough memory, fuzzer tests cancelled");
|
|
|
|
/* Create initial samples */
|
|
RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
|
|
RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
|
|
RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
|
|
RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
|
|
RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
|
|
memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
|
|
CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */
|
|
|
|
/* catch up testNb */
|
|
for (testNb=1; testNb < startTest; testNb++)
|
|
FUZ_rand(&coreSeed);
|
|
|
|
/* test loop */
|
|
for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
|
|
U32 lseed;
|
|
const BYTE* srcBuffer;
|
|
size_t totalTestSize, totalGenSize, cSize;
|
|
XXH64_state_t xxhState;
|
|
U64 crcOrig;
|
|
U32 resetAllowed = 1;
|
|
size_t maxTestSize;
|
|
|
|
/* init */
|
|
if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); }
|
|
else { DISPLAYUPDATE(2, "\r%6u ", testNb); }
|
|
FUZ_rand(&coreSeed);
|
|
lseed = coreSeed ^ prime32;
|
|
|
|
/* states full reset (deliberately not synchronized) */
|
|
/* some issues can only happen when reusing states */
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 131) {
|
|
DISPLAYLEVEL(5, "Creating new context \n");
|
|
ZSTD_freeCCtx(zc);
|
|
zc = ZSTD_createCCtx();
|
|
CHECK(zc==NULL, "ZSTD_createCCtx allocation error");
|
|
resetAllowed=0;
|
|
}
|
|
if ((FUZ_rand(&lseed) & 0xFF) == 132) {
|
|
ZSTD_freeDStream(zd);
|
|
zd = ZSTD_createDStream();
|
|
CHECK(zd==NULL, "ZSTD_createDStream allocation error");
|
|
ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */
|
|
}
|
|
|
|
/* srcBuffer selection [0-4] */
|
|
{ U32 buffNb = FUZ_rand(&lseed) & 0x7F;
|
|
if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
|
|
else {
|
|
buffNb >>= 3;
|
|
if (buffNb & 7) {
|
|
const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} else {
|
|
const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} }
|
|
srcBuffer = cNoiseBuffer[buffNb];
|
|
}
|
|
|
|
/* compression init */
|
|
if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */
|
|
&& oldTestLog /* at least one test happened */ && resetAllowed) {
|
|
maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
|
|
if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1;
|
|
CHECK_Z( ZSTD_CCtx_loadDictionary(zc, NULL, 0) );
|
|
{ int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1;
|
|
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_compressionLevel, compressionLevel) );
|
|
}
|
|
} else {
|
|
U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const cLevelCandidate = (FUZ_rand(&lseed) %
|
|
(ZSTD_maxCLevel() -
|
|
(MAX(testLog, dictLog) / 3))) +
|
|
1;
|
|
U32 const cLevel = MIN(cLevelCandidate, cLevelMax);
|
|
maxTestSize = FUZ_rLogLength(&lseed, testLog);
|
|
oldTestLog = testLog;
|
|
/* random dictionary selection */
|
|
dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0;
|
|
{ size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
|
|
dict = srcBuffer + dictStart;
|
|
if (!dictSize) dict=NULL;
|
|
}
|
|
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize;
|
|
ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, pledgedSrcSize, dictSize);
|
|
|
|
/* mess with compression parameters */
|
|
CHECK_Z( ZSTD_CCtx_loadDictionary(zc, NULL, 0) ); /* cancel previous dict, to allow new compression parameters */
|
|
cParams.windowLog += (FUZ_rand(&lseed) & 3) - 1;
|
|
cParams.hashLog += (FUZ_rand(&lseed) & 3) - 1;
|
|
cParams.chainLog += (FUZ_rand(&lseed) & 3) - 1;
|
|
cParams.searchLog += (FUZ_rand(&lseed) & 3) - 1;
|
|
cParams.searchLength += (FUZ_rand(&lseed) & 3) - 1;
|
|
cParams.targetLength = (U32)(cParams.targetLength * (0.5 + ((double)(FUZ_rand(&lseed) & 127) / 128)));
|
|
cParams = ZSTD_adjustCParams(cParams, 0, 0);
|
|
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_windowLog, cParams.windowLog) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_hashLog, cParams.hashLog) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_chainLog, cParams.chainLog) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_searchLog, cParams.searchLog) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_minMatch, cParams.searchLength) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_targetLength, cParams.targetLength) );
|
|
|
|
/* unconditionally set, to be sync with decoder */
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_refDictContent, FUZ_rand(&lseed) & 1) );
|
|
CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) );
|
|
|
|
if (dict && dictSize) {
|
|
/* test that compression parameters are correctly rejected after setting a dictionary */
|
|
size_t const setError = ZSTD_CCtx_setParameter(zc, ZSTD_p_windowLog, cParams.windowLog-1) ;
|
|
CHECK(!ZSTD_isError(setError), "ZSTD_CCtx_setParameter should have failed");
|
|
}
|
|
|
|
/* mess with frame parameters */
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_checksumFlag, FUZ_rand(&lseed) & 1) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_dictIDFlag, FUZ_rand(&lseed) & 1) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_contentSizeFlag, FUZ_rand(&lseed) & 1) );
|
|
if (FUZ_rand(&lseed) & 1) CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
|
|
DISPLAYLEVEL(5, "pledgedSrcSize : %u \n", (U32)pledgedSrcSize);
|
|
|
|
/* multi-threading parameters */
|
|
{ U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1;
|
|
U32 const nbThreads = MIN(nbThreadsCandidate, nbThreadsMax);
|
|
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_nbThreads, nbThreads) );
|
|
if (nbThreads > 1) {
|
|
U32 const jobLog = FUZ_rand(&lseed) % (testLog+1);
|
|
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_overlapSizeLog, FUZ_rand(&lseed) % 10) );
|
|
CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_p_jobSize, (U32)FUZ_rLogLength(&lseed, jobLog)) );
|
|
} } } }
|
|
|
|
/* multi-segments compression test */
|
|
XXH64_reset(&xxhState, 0);
|
|
{ ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
|
|
U32 n;
|
|
for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) {
|
|
/* compress random chunks into randomly sized dst buffers */
|
|
size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize);
|
|
size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
ZSTD_EndDirective const flush = (FUZ_rand(&lseed) & 15) ? ZSTD_e_continue : ZSTD_e_flush;
|
|
ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
|
|
outBuff.size = outBuff.pos + dstBuffSize;
|
|
|
|
CHECK_Z( ZSTD_compress_generic(zc, &outBuff, &inBuff, flush) );
|
|
DISPLAYLEVEL(5, "compress consumed %u bytes (total : %u) \n",
|
|
(U32)inBuff.pos, (U32)(totalTestSize + inBuff.pos));
|
|
|
|
XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos);
|
|
memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos);
|
|
totalTestSize += inBuff.pos;
|
|
}
|
|
|
|
/* final frame epilogue */
|
|
{ size_t remainingToFlush = (size_t)(-1);
|
|
while (remainingToFlush) {
|
|
ZSTD_inBuffer inBuff = { NULL, 0, 0 };
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
DISPLAYLEVEL(5, "End-flush into dst buffer of size %u \n", (U32)adjustedDstSize);
|
|
remainingToFlush = ZSTD_compress_generic(zc, &outBuff, &inBuff, ZSTD_e_end);
|
|
CHECK(ZSTD_isError(remainingToFlush),
|
|
"ZSTD_compress_generic w/ ZSTD_e_end error : %s",
|
|
ZSTD_getErrorName(remainingToFlush) );
|
|
} }
|
|
crcOrig = XXH64_digest(&xxhState);
|
|
cSize = outBuff.pos;
|
|
DISPLAYLEVEL(5, "Frame completed : %u bytes \n", (U32)cSize);
|
|
}
|
|
|
|
/* multi - fragments decompression test */
|
|
if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
|
|
CHECK_Z( ZSTD_resetDStream(zd) );
|
|
} else {
|
|
CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) );
|
|
}
|
|
{ size_t decompressionResult = 1;
|
|
ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
for (totalGenSize = 0 ; decompressionResult ; ) {
|
|
size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize);
|
|
inBuff.size = inBuff.pos + readCSrcSize;
|
|
outBuff.size = inBuff.pos + dstBuffSize;
|
|
DISPLAYLEVEL(5, "ZSTD_decompressStream input %u bytes \n", (U32)readCSrcSize);
|
|
decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult));
|
|
DISPLAYLEVEL(5, "inBuff.pos = %u \n", (U32)readCSrcSize);
|
|
}
|
|
CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (U32)outBuff.pos, (U32)totalTestSize);
|
|
CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (U32)inBuff.pos, (U32)cSize);
|
|
{ U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0);
|
|
if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
|
|
CHECK (crcDest!=crcOrig, "decompressed data corrupted");
|
|
} }
|
|
|
|
/*===== noisy/erroneous src decompression test =====*/
|
|
|
|
/* add some noise */
|
|
{ U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2;
|
|
U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) {
|
|
size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const noiseSize = MIN((cSize/3) , randomNoiseSize);
|
|
size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize);
|
|
size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize);
|
|
memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize);
|
|
} }
|
|
|
|
/* try decompression on noisy data */
|
|
CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */
|
|
{ ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 };
|
|
ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 };
|
|
while (outBuff.pos < dstBufferSize) {
|
|
size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize);
|
|
size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
inBuff.size = inBuff.pos + adjustedCSrcSize;
|
|
{ size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (ZSTD_isError(decompressError)) break; /* error correctly detected */
|
|
/* Good so far, but no more progress possible */
|
|
if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break;
|
|
} } } }
|
|
DISPLAY("\r%u fuzzer tests completed \n", testNb-1);
|
|
|
|
_cleanup:
|
|
ZSTD_freeCCtx(zc);
|
|
ZSTD_freeDStream(zd);
|
|
ZSTD_freeDStream(zd_noise);
|
|
free(cNoiseBuffer[0]);
|
|
free(cNoiseBuffer[1]);
|
|
free(cNoiseBuffer[2]);
|
|
free(cNoiseBuffer[3]);
|
|
free(cNoiseBuffer[4]);
|
|
free(copyBuffer);
|
|
free(cBuffer);
|
|
free(dstBuffer);
|
|
return result;
|
|
|
|
_output_error:
|
|
result = 1;
|
|
goto _cleanup;
|
|
}
|
|
|
|
|
|
/*-*******************************************************
|
|
* Command line
|
|
*********************************************************/
|
|
int FUZ_usage(const char* programName)
|
|
{
|
|
DISPLAY( "Usage :\n");
|
|
DISPLAY( " %s [args]\n", programName);
|
|
DISPLAY( "\n");
|
|
DISPLAY( "Arguments :\n");
|
|
DISPLAY( " -i# : Nb of tests (default:%u) \n", nbTestsDefault);
|
|
DISPLAY( " -s# : Select seed (default:prompt user)\n");
|
|
DISPLAY( " -t# : Select starting test number (default:0)\n");
|
|
DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", FUZ_COMPRESSIBILITY_DEFAULT);
|
|
DISPLAY( " -v : verbose\n");
|
|
DISPLAY( " -p : pause at the end\n");
|
|
DISPLAY( " -h : display help and exit\n");
|
|
return 0;
|
|
}
|
|
|
|
typedef enum { simple_api, mt_api, advanced_api } e_api;
|
|
|
|
int main(int argc, const char** argv)
|
|
{
|
|
U32 seed=0;
|
|
int seedset=0;
|
|
int argNb;
|
|
int nbTests = nbTestsDefault;
|
|
int testNb = 0;
|
|
int proba = FUZ_COMPRESSIBILITY_DEFAULT;
|
|
int result=0;
|
|
int mainPause = 0;
|
|
int bigTests = 1;
|
|
e_api selected_api = simple_api;
|
|
const char* const programName = argv[0];
|
|
ZSTD_customMem const customMem = { allocFunction, freeFunction, NULL };
|
|
ZSTD_customMem const customNULL = ZSTD_defaultCMem;
|
|
|
|
/* Check command line */
|
|
for(argNb=1; argNb<argc; argNb++) {
|
|
const char* argument = argv[argNb];
|
|
if(!argument) continue; /* Protection if argument empty */
|
|
|
|
/* Parsing commands. Aggregated commands are allowed */
|
|
if (argument[0]=='-') {
|
|
|
|
if (!strcmp(argument, "--mt")) { selected_api=mt_api; continue; }
|
|
if (!strcmp(argument, "--newapi")) { selected_api=advanced_api; continue; }
|
|
if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
|
|
|
|
argument++;
|
|
while (*argument!=0) {
|
|
switch(*argument)
|
|
{
|
|
case 'h':
|
|
return FUZ_usage(programName);
|
|
|
|
case 'v':
|
|
argument++;
|
|
g_displayLevel++;
|
|
break;
|
|
|
|
case 'q':
|
|
argument++;
|
|
g_displayLevel--;
|
|
break;
|
|
|
|
case 'p': /* pause at the end */
|
|
argument++;
|
|
mainPause = 1;
|
|
break;
|
|
|
|
case 'i': /* limit tests by nb of iterations (default) */
|
|
argument++;
|
|
nbTests=0; g_clockTime=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
nbTests *= 10;
|
|
nbTests += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'T': /* limit tests by time */
|
|
argument++;
|
|
nbTests=0; g_clockTime=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
g_clockTime *= 10;
|
|
g_clockTime += *argument - '0';
|
|
argument++;
|
|
}
|
|
if (*argument=='m') g_clockTime *=60, argument++;
|
|
if (*argument=='n') argument++;
|
|
g_clockTime *= CLOCKS_PER_SEC;
|
|
break;
|
|
|
|
case 's': /* manually select seed */
|
|
argument++;
|
|
seed=0;
|
|
seedset=1;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
seed *= 10;
|
|
seed += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 't': /* select starting test number */
|
|
argument++;
|
|
testNb=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
testNb *= 10;
|
|
testNb += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'P': /* compressibility % */
|
|
argument++;
|
|
proba=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
proba *= 10;
|
|
proba += *argument - '0';
|
|
argument++;
|
|
}
|
|
if (proba<0) proba=0;
|
|
if (proba>100) proba=100;
|
|
break;
|
|
|
|
default:
|
|
return FUZ_usage(programName);
|
|
}
|
|
} } } /* for(argNb=1; argNb<argc; argNb++) */
|
|
|
|
/* Get Seed */
|
|
DISPLAY("Starting zstream tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING);
|
|
|
|
if (!seedset) {
|
|
time_t const t = time(NULL);
|
|
U32 const h = XXH32(&t, sizeof(t), 1);
|
|
seed = h % 10000;
|
|
}
|
|
|
|
DISPLAY("Seed = %u\n", seed);
|
|
if (proba!=FUZ_COMPRESSIBILITY_DEFAULT) DISPLAY("Compressibility : %i%%\n", proba);
|
|
|
|
if (nbTests<=0) nbTests=1;
|
|
|
|
if (testNb==0) {
|
|
result = basicUnitTests(0, ((double)proba) / 100, customNULL); /* constant seed for predictability */
|
|
if (!result) {
|
|
DISPLAYLEVEL(3, "Unit tests using customMem :\n")
|
|
result = basicUnitTests(0, ((double)proba) / 100, customMem); /* use custom memory allocation functions */
|
|
} }
|
|
|
|
if (!result) {
|
|
switch(selected_api)
|
|
{
|
|
case simple_api :
|
|
result = fuzzerTests(seed, nbTests, testNb, ((double)proba) / 100, bigTests);
|
|
break;
|
|
case mt_api :
|
|
result = fuzzerTests_MT(seed, nbTests, testNb, ((double)proba) / 100, bigTests);
|
|
break;
|
|
case advanced_api :
|
|
result = fuzzerTests_newAPI(seed, nbTests, testNb, ((double)proba) / 100, bigTests);
|
|
break;
|
|
default :
|
|
assert(0); /* impossible */
|
|
}
|
|
}
|
|
|
|
if (mainPause) {
|
|
int unused;
|
|
DISPLAY("Press Enter \n");
|
|
unused = getchar();
|
|
(void)unused;
|
|
}
|
|
return result;
|
|
}
|