mirror of
https://github.com/facebook/zstd.git
synced 2025-10-30 00:05:02 -04:00
610 lines
21 KiB
C
610 lines
21 KiB
C
/*
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Fuzzer test tool for zstd_buffered
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Copyright (C) Yann Collet 2105
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- ZSTD source repository : https://github.com/Cyan4973/zstd
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- ZSTD public forum : https://groups.google.com/forum/#!forum/lz4c
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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 <sys/timeb.h> /* timeb */
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#include <string.h> /* strcmp */
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#include "mem.h"
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#include "zstd_buffered.h"
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#include "zstd.h" /* ZSTD_compressBound() */
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#include "datagen.h" /* RDG_genBuffer */
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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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#ifndef ZSTD_VERSION
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# define ZSTD_VERSION ""
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#endif
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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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#define COMPRESSIBLE_NOISE_LENGTH (10 MB)
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#define FUZ_COMPRESSIBILITY_DEFAULT 50
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static const U32 prime1 = 2654435761U;
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static const U32 prime2 = 2246822519U;
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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) { DISPLAY(__VA_ARGS__); }
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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_GetMilliSpan(g_displayTime) > g_refreshRate) || (g_displayLevel>=4)) \
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{ g_displayTime = FUZ_GetMilliStart(); DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stdout); } }
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static const U32 g_refreshRate = 150;
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static U32 g_displayTime = 0;
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static U32 g_testTime = 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 U32 FUZ_GetMilliStart(void)
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{
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struct timeb tb;
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U32 nCount;
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ftime( &tb );
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nCount = (U32) (((tb.time & 0xFFFFF) * 1000) + tb.millitm);
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return nCount;
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}
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static U32 FUZ_GetMilliSpan(U32 nTimeStart)
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{
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U32 nCurrent = FUZ_GetMilliStart();
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U32 nSpan = nCurrent - nTimeStart;
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if (nTimeStart > nCurrent)
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nSpan += 0x100000 * 1000;
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return nSpan;
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}
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# define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
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unsigned int FUZ_rand(unsigned int* src)
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{
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U32 rand32 = *src;
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rand32 *= prime1;
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rand32 += prime2;
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rand32 = FUZ_rotl32(rand32, 13);
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*src = rand32;
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return rand32 >> 5;
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}
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/*
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static unsigned FUZ_highbit32(U32 v32)
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{
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unsigned nbBits = 0;
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if (v32==0) return 0;
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for ( ; v32 ; v32>>=1) nbBits++;
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return nbBits;
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}
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*/
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static int basicUnitTests(U32 seed, double compressibility)
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{
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int testResult = 0;
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void* CNBuffer;
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size_t CNBufferSize = COMPRESSIBLE_NOISE_LENGTH;
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void* compressedBuffer;
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size_t compressedBufferSize = ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH);
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void* decodedBuffer;
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size_t decodedBufferSize = CNBufferSize;
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U32 randState = seed;
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size_t result, cSize, readSize, genSize;
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U32 testNb=0;
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ZBUFF_CCtx* zc = ZBUFF_createCCtx();
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ZBUFF_DCtx* zd = ZBUFF_createDCtx();
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/* Create compressible test buffer */
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CNBuffer = malloc(CNBufferSize);
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compressedBuffer = malloc(compressedBufferSize);
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decodedBuffer = malloc(decodedBufferSize);
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if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd)
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{
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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., randState);
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/* Basic compression test */
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DISPLAYLEVEL(4, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZBUFF_compressInitDictionary(zc, CNBuffer, 128 KB, 1);
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readSize = CNBufferSize;
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genSize = compressedBufferSize;
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result = ZBUFF_compressContinue(zc, compressedBuffer, &genSize, CNBuffer, &readSize);
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if (ZBUFF_isError(result)) goto _output_error;
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if (readSize != CNBufferSize) goto _output_error; /* entire input should be consumed */
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cSize = genSize;
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genSize = compressedBufferSize - cSize;
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result = ZBUFF_compressEnd(zc, ((char*)compressedBuffer)+cSize, &genSize);
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if (result != 0) goto _output_error; /* error, or some data not flushed */
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cSize += genSize;
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DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
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/* Basic decompression test */
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DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZBUFF_decompressInitDictionary(zd, CNBuffer, 128 KB);
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readSize = cSize;
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genSize = CNBufferSize;
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result = ZBUFF_decompressContinue(zd, decodedBuffer, &genSize, compressedBuffer, &readSize);
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if (result != 0) goto _output_error; /* should reach end of frame == 0; otherwise, some data left, or an error */
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if (genSize != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (readSize != cSize) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(4, "OK \n");
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/* check regenerated data is byte exact */
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{
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size_t i;
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DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
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for (i=0; i<CNBufferSize; i++)
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{
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if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;;
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}
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DISPLAYLEVEL(4, "OK \n");
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}
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_end:
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ZBUFF_freeCCtx(zc);
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ZBUFF_freeDCtx(zd);
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free(CNBuffer);
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free(compressedBuffer);
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free(decodedBuffer);
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return testResult;
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_output_error:
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testResult = 1;
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DISPLAY("Error detected in Unit tests ! \n");
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goto _end;
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}
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static size_t findDiff(const void* buf1, const void* buf2, size_t max)
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{
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const BYTE* b1 = (const BYTE*)buf1;
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const BYTE* b2 = (const BYTE*)buf2;
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size_t i;
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for (i=0; i<max; i++)
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{
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if (b1[i] != b2[i]) break;
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}
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return i;
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}
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#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
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#define CHECK(cond, ...) if (cond) { DISPLAY("Error => "); DISPLAY(__VA_ARGS__); \
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DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); goto _output_error; }
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static const U32 maxSrcLog = 24;
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static const U32 maxSampleLog = 19;
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int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibility)
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{
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BYTE* cNoiseBuffer[5];
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BYTE* srcBuffer;
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size_t srcBufferSize = (size_t)1<<maxSrcLog;
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BYTE* copyBuffer;
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size_t copyBufferSize = srcBufferSize + (1<<maxSampleLog);
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BYTE* cBuffer;
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size_t cBufferSize = ZSTD_compressBound(srcBufferSize);
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BYTE* dstBuffer;
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size_t dstBufferSize = srcBufferSize;
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U32 result = 0;
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U32 testNb = 0;
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U32 coreSeed = seed, lseed = 0;
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ZBUFF_CCtx* zc;
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ZBUFF_DCtx* zd;
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U32 startTime = FUZ_GetMilliStart();
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/* allocation */
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zc = ZBUFF_createCCtx();
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zd = ZBUFF_createDCtx();
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cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
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copyBuffer= (BYTE*)malloc (copyBufferSize);
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dstBuffer = (BYTE*)malloc (dstBufferSize);
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cBuffer = (BYTE*)malloc (cBufferSize);
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CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
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!copyBuffer || !dstBuffer || !cBuffer || !zc || !zd,
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"Not enough memory, fuzzer tests cancelled");
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/* Create initial samples */
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RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
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RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
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RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
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RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
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RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
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srcBuffer = cNoiseBuffer[2];
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memset(copyBuffer, 0x65, copyBufferSize);
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memcpy(copyBuffer, srcBuffer, MIN(copyBufferSize,srcBufferSize)); /* make copyBuffer considered initialized */
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/* catch up testNb */
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for (testNb=1; testNb < startTest; testNb++)
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FUZ_rand(&coreSeed);
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/* test loop */
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for ( ; (testNb <= nbTests) || (FUZ_GetMilliSpan(startTime) < g_testTime); testNb++ )
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{
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size_t sampleSize, sampleStart;
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const BYTE* dict;
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size_t cSize, dictSize;
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size_t maxTestSize, totalTestSize, readSize, totalCSize, genSize, totalGenSize;
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size_t errorCode;
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U32 sampleSizeLog, buffNb, n, nbChunks;
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XXH64_CREATESTATE_STATIC(xxh64);
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U64 crcOrig, crcDest;
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/* init */
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DISPLAYUPDATE(2, "\r%6u", testNb);
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if (nbTests >= testNb) DISPLAYUPDATE(2, "/%6u ", nbTests);
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FUZ_rand(&coreSeed);
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lseed = coreSeed ^ prime1;
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buffNb = FUZ_rand(&lseed) & 127;
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if (buffNb & 7) buffNb=2; /* select buffer */
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else
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{
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buffNb >>= 3;
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if (buffNb & 7)
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{
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const U32 tnb[2] = { 1, 3 };
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buffNb = tnb[buffNb >> 3];
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}
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else
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{
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const U32 tnb[2] = { 0, 4 };
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buffNb = tnb[buffNb >> 3];
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}
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}
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srcBuffer = cNoiseBuffer[buffNb];
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/* Multi - segments compression test */
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XXH64_reset(xxh64, 0);
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nbChunks = (FUZ_rand(&lseed) & 127) + 2;
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sampleSizeLog = FUZ_rand(&lseed) % maxSrcLog;
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maxTestSize = (size_t)1 << sampleSizeLog;
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maxTestSize += FUZ_rand(&lseed) & (maxTestSize-1);
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
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dict = srcBuffer + sampleStart;
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dictSize = sampleSize;
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ZBUFF_compressInitDictionary(zc, dict, dictSize, (FUZ_rand(&lseed) % (20 - (sampleSizeLog/3))) + 1);
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totalTestSize = 0;
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cSize = 0;
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for (n=0; n<nbChunks; n++)
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{
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
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readSize = sampleSize;
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/* random size output buffer */
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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genSize = MIN (cBufferSize - cSize, sampleSize);
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errorCode = ZBUFF_compressContinue(zc, cBuffer+cSize, &genSize, srcBuffer+sampleStart, &readSize);
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CHECK (ZBUFF_isError(errorCode), "compression error : %s", ZBUFF_getErrorName(errorCode));
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XXH64_update(xxh64, srcBuffer+sampleStart, readSize);
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memcpy(copyBuffer+totalTestSize, srcBuffer+sampleStart, readSize);
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cSize += genSize;
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totalTestSize += readSize;
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if ((FUZ_rand(&lseed) & 15) == 0)
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{
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/* add a few random flushes operations, to mess around */
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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genSize = MIN (cBufferSize - cSize, sampleSize);
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errorCode = ZBUFF_compressFlush(zc, cBuffer+cSize, &genSize);
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CHECK (ZBUFF_isError(errorCode), "flush error : %s", ZBUFF_getErrorName(errorCode));
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cSize += genSize;
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}
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if (totalTestSize > maxTestSize) break;
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}
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genSize = cBufferSize - cSize;
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errorCode = ZBUFF_compressEnd(zc, cBuffer+cSize, &genSize);
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CHECK (ZBUFF_isError(errorCode), "compression error : %s", ZBUFF_getErrorName(errorCode));
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CHECK (errorCode != 0, "frame epilogue not fully consumed");
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cSize += genSize;
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crcOrig = XXH64_digest(xxh64);
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/* multi - fragments decompression test */
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ZBUFF_decompressInitDictionary(zd, dict, dictSize);
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totalCSize = 0;
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totalGenSize = 0;
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while (totalCSize < cSize)
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{
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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readSize = sampleSize;
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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genSize = MIN(sampleSize, dstBufferSize - totalGenSize);
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errorCode = ZBUFF_decompressContinue(zd, dstBuffer+totalGenSize, &genSize, cBuffer+totalCSize, &readSize);
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CHECK (ZBUFF_isError(errorCode), "decompression error : %s", ZBUFF_getErrorName(errorCode));
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totalGenSize += genSize;
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totalCSize += readSize;
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}
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CHECK (errorCode != 0, "frame not fully decoded");
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CHECK (totalGenSize != totalTestSize, "decompressed data : wrong size")
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CHECK (totalCSize != cSize, "compressed data should be fully read")
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crcDest = XXH64(dstBuffer, totalTestSize, 0);
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if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize);
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CHECK (crcDest!=crcOrig, "decompressed data corrupted");
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/* noisy/erroneous src decompression test */
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/* add some noise */
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nbChunks = (FUZ_rand(&lseed) & 7) + 2;
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for (n=0; n<nbChunks; n++)
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{
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size_t cStart;
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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if (sampleSize > cSize/3) sampleSize = cSize/3;
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sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize);
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cStart = FUZ_rand(&lseed) % (cSize - sampleSize);
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memcpy(cBuffer+cStart, srcBuffer+sampleStart, sampleSize);
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}
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/* try decompression on noisy data */
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ZBUFF_decompressInit(zd);
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totalCSize = 0;
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totalGenSize = 0;
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while ( (totalCSize < cSize) && (totalGenSize < dstBufferSize) )
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{
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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readSize = sampleSize;
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sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog;
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sampleSize = (size_t)1 << sampleSizeLog;
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sampleSize += FUZ_rand(&lseed) & (sampleSize-1);
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genSize = MIN(sampleSize, dstBufferSize - totalGenSize);
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errorCode = ZBUFF_decompressContinue(zd, dstBuffer+totalGenSize, &genSize, cBuffer+totalCSize, &readSize);
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if (ZBUFF_isError(errorCode)) break; /* error correctly detected */
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totalGenSize += genSize;
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totalCSize += readSize;
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}
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}
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DISPLAY("\r%u fuzzer tests completed \n", testNb);
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_cleanup:
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ZBUFF_freeCCtx(zc);
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ZBUFF_freeDCtx(zd);
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free(cNoiseBuffer[0]);
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free(cNoiseBuffer[1]);
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free(cNoiseBuffer[2]);
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free(cNoiseBuffer[3]);
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free(cNoiseBuffer[4]);
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free(copyBuffer);
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free(cBuffer);
|
|
free(dstBuffer);
|
|
return result;
|
|
|
|
_output_error:
|
|
result = 1;
|
|
goto _cleanup;
|
|
}
|
|
|
|
|
|
/*********************************************************
|
|
* Command line
|
|
*********************************************************/
|
|
int FUZ_usage(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;
|
|
}
|
|
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
U32 seed=0;
|
|
int seedset=0;
|
|
int argNb;
|
|
int nbTests = nbTestsDefault;
|
|
int testNb = 0;
|
|
int proba = FUZ_COMPRESSIBILITY_DEFAULT;
|
|
int result=0;
|
|
U32 mainPause = 0;
|
|
char* programName;
|
|
|
|
/* Check command line */
|
|
programName = argv[0];
|
|
for(argNb=1; argNb<argc; argNb++)
|
|
{
|
|
char* argument = argv[argNb];
|
|
|
|
if(!argument) continue; /* Protection if argument empty */
|
|
|
|
/* Handle commands. Aggregated commands are allowed */
|
|
if (argument[0]=='-')
|
|
{
|
|
argument++;
|
|
|
|
while (*argument!=0)
|
|
{
|
|
switch(*argument)
|
|
{
|
|
case 'h':
|
|
return FUZ_usage(programName);
|
|
case 'v':
|
|
argument++;
|
|
g_displayLevel=4;
|
|
break;
|
|
case 'q':
|
|
argument++;
|
|
g_displayLevel--;
|
|
break;
|
|
case 'p': /* pause at the end */
|
|
argument++;
|
|
mainPause = 1;
|
|
break;
|
|
|
|
case 'i':
|
|
argument++;
|
|
nbTests=0; g_testTime=0;
|
|
while ((*argument>='0') && (*argument<='9'))
|
|
{
|
|
nbTests *= 10;
|
|
nbTests += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'T':
|
|
argument++;
|
|
nbTests=0; g_testTime=0;
|
|
while ((*argument>='0') && (*argument<='9'))
|
|
{
|
|
g_testTime *= 10;
|
|
g_testTime += *argument - '0';
|
|
argument++;
|
|
}
|
|
if (*argument=='m') g_testTime *=60, argument++;
|
|
if (*argument=='n') argument++;
|
|
g_testTime *= 1000;
|
|
break;
|
|
|
|
case 's':
|
|
argument++;
|
|
seed=0;
|
|
seedset=1;
|
|
while ((*argument>='0') && (*argument<='9'))
|
|
{
|
|
seed *= 10;
|
|
seed += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 't':
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Get Seed */
|
|
DISPLAY("Starting zstd_buffered tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION);
|
|
|
|
if (!seedset) seed = FUZ_GetMilliStart() % 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); /* constant seed for predictability */
|
|
if (!result)
|
|
result = fuzzerTests(seed, nbTests, testNb, ((double)proba) / 100);
|
|
if (mainPause)
|
|
{
|
|
int unused;
|
|
DISPLAY("Press Enter \n");
|
|
unused = getchar();
|
|
(void)unused;
|
|
}
|
|
return result;
|
|
}
|