| /* |
| Fuzzer test tool for zstd |
| Copyright (C) Yann Collet 2014-2016 |
| |
| GPL v2 License |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| You can contact the author at : |
| - ZSTD homepage : http://www.zstd.net |
| */ |
| |
| /*-************************************ |
| * Compiler specific |
| **************************************/ |
| #ifdef _MSC_VER /* Visual Studio */ |
| # define _CRT_SECURE_NO_WARNINGS /* fgets */ |
| # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ |
| # pragma warning(disable : 4146) /* disable: C4146: minus unsigned expression */ |
| #endif |
| |
| |
| /*-************************************ |
| * Includes |
| **************************************/ |
| #include <stdlib.h> /* free */ |
| #include <stdio.h> /* fgets, sscanf */ |
| #include <sys/timeb.h> /* timeb */ |
| #include <string.h> /* strcmp */ |
| #include "zstd_static.h" |
| #include "datagen.h" /* RDG_genBuffer */ |
| #include "xxhash.h" /* XXH64 */ |
| #include "mem.h" |
| |
| |
| /*-************************************ |
| * Constants |
| **************************************/ |
| #ifndef ZSTD_VERSION |
| # define ZSTD_VERSION "" |
| #endif |
| |
| #define KB *(1U<<10) |
| #define MB *(1U<<20) |
| #define GB *(1U<<30) |
| |
| static const size_t COMPRESSIBLE_NOISE_LENGTH = 10 MB; /* capital, used to be a macro */ |
| static const U32 FUZ_compressibility_default = 50; |
| static const U32 nbTestsDefault = 30000; |
| |
| |
| /*-************************************ |
| * Display Macros |
| **************************************/ |
| #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) |
| #define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } |
| static U32 g_displayLevel = 2; |
| |
| #define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \ |
| if ((FUZ_GetMilliSpan(g_displayTime) > g_refreshRate) || (g_displayLevel>=4)) \ |
| { g_displayTime = FUZ_GetMilliStart(); DISPLAY(__VA_ARGS__); \ |
| if (g_displayLevel>=4) fflush(stdout); } } |
| static const U32 g_refreshRate = 150; |
| static U32 g_displayTime = 0; |
| |
| |
| /*-******************************************************* |
| * Fuzzer functions |
| *********************************************************/ |
| #define MIN(a,b) ((a)<(b)?(a):(b)) |
| #define MAX(a,b) ((a)>(b)?(a):(b)) |
| |
| static U32 FUZ_GetMilliStart(void) |
| { |
| struct timeb tb; |
| U32 nCount; |
| ftime( &tb ); |
| nCount = (U32) (((tb.time & 0xFFFFF) * 1000) + tb.millitm); |
| return nCount; |
| } |
| |
| |
| static U32 FUZ_GetMilliSpan(U32 nTimeStart) |
| { |
| U32 nCurrent = FUZ_GetMilliStart(); |
| U32 nSpan = nCurrent - nTimeStart; |
| if (nTimeStart > nCurrent) |
| nSpan += 0x100000 * 1000; |
| return nSpan; |
| } |
| |
| |
| # define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) |
| unsigned int FUZ_rand(unsigned int* src) |
| { |
| static const U32 prime1 = 2654435761U; |
| static const U32 prime2 = 2246822519U; |
| U32 rand32 = *src; |
| rand32 *= prime1; |
| rand32 += prime2; |
| rand32 = FUZ_rotl32(rand32, 13); |
| *src = rand32; |
| return rand32 >> 5; |
| } |
| |
| |
| static unsigned FUZ_highbit32(U32 v32) |
| { |
| unsigned nbBits = 0; |
| if (v32==0) return 0; |
| while (v32) { |
| v32 >>= 1; |
| nbBits ++; |
| } |
| return nbBits; |
| } |
| |
| |
| static int basicUnitTests(U32 seed, double compressibility) |
| { |
| int testResult = 0; |
| void* CNBuffer; |
| void* compressedBuffer; |
| void* decodedBuffer; |
| U32 randState = seed; |
| size_t result, cSize; |
| U32 testNb=0; |
| |
| /* Create compressible test buffer */ |
| CNBuffer = malloc(COMPRESSIBLE_NOISE_LENGTH); |
| compressedBuffer = malloc(ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH)); |
| decodedBuffer = malloc(COMPRESSIBLE_NOISE_LENGTH); |
| if (!CNBuffer || !compressedBuffer || !decodedBuffer) { |
| DISPLAY("Not enough memory, aborting\n"); |
| testResult = 1; |
| goto _end; |
| } |
| RDG_genBuffer(CNBuffer, COMPRESSIBLE_NOISE_LENGTH, compressibility, 0., randState); |
| |
| /* Basic tests */ |
| DISPLAYLEVEL(4, "test%3i : compress %u bytes : ", testNb++, (U32)COMPRESSIBLE_NOISE_LENGTH); |
| result = ZSTD_compress(compressedBuffer, ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH), CNBuffer, COMPRESSIBLE_NOISE_LENGTH, 1); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize = result; |
| DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); |
| |
| DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)COMPRESSIBLE_NOISE_LENGTH); |
| result = ZSTD_decompress(decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != COMPRESSIBLE_NOISE_LENGTH) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| { size_t i; |
| DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++); |
| for (i=0; i<COMPRESSIBLE_NOISE_LENGTH; i++) { |
| if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;; |
| } |
| DISPLAYLEVEL(4, "OK \n"); |
| } |
| |
| DISPLAYLEVEL(4, "test%3i : decompress with 1 missing byte : ", testNb++); |
| result = ZSTD_decompress(decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, compressedBuffer, cSize-1); |
| if (!ZSTD_isError(result)) goto _output_error; |
| if (result != (size_t)-ZSTD_error_srcSize_wrong) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : decompress with 1 too much byte : ", testNb++); |
| result = ZSTD_decompress(decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, compressedBuffer, cSize+1); |
| if (!ZSTD_isError(result)) goto _output_error; |
| if (result != (size_t)-ZSTD_error_srcSize_wrong) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| /* Dictionary and Duplication tests */ |
| { ZSTD_CCtx* ctxOrig = ZSTD_createCCtx(); |
| ZSTD_CCtx* ctxDuplicated = ZSTD_createCCtx(); |
| ZSTD_DCtx* dctx = ZSTD_createDCtx(); |
| const size_t dictSize = 500; |
| size_t cSizeOrig; |
| |
| DISPLAYLEVEL(4, "test%3i : load dictionary into context : ", testNb++); |
| result = ZSTD_compressBegin_usingDict(ctxOrig, CNBuffer, dictSize, 2); |
| if (ZSTD_isError(result)) goto _output_error; |
| result = ZSTD_copyCCtx(ctxDuplicated, ctxOrig); |
| if (ZSTD_isError(result)) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : compress with dictionary : ", testNb++); |
| cSize = 0; |
| result = ZSTD_compressContinue(ctxOrig, compressedBuffer, ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH), (const char*)CNBuffer + dictSize, COMPRESSIBLE_NOISE_LENGTH - dictSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize += result; |
| result = ZSTD_compressEnd(ctxOrig, (char*)compressedBuffer+cSize, ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH)-cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize += result; |
| DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); |
| |
| DISPLAYLEVEL(4, "test%3i : frame built with dictionary should be decompressible : ", testNb++); |
| result = ZSTD_decompress_usingDict(dctx, |
| decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, |
| compressedBuffer, cSize, |
| CNBuffer, dictSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != COMPRESSIBLE_NOISE_LENGTH - dictSize) goto _output_error; |
| ZSTD_freeCCtx(ctxOrig); /* if ctxOrig is read, will produce segfault */ |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : compress with duplicated context : ", testNb++); |
| cSizeOrig = cSize; |
| cSize = 0; |
| result = ZSTD_compressContinue(ctxDuplicated, compressedBuffer, ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH), (const char*)CNBuffer + dictSize, COMPRESSIBLE_NOISE_LENGTH - dictSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize += result; |
| result = ZSTD_compressEnd(ctxDuplicated, (char*)compressedBuffer+cSize, ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH)-cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize += result; |
| if (cSize != cSizeOrig) goto _output_error; /* should be identical == have same size */ |
| ZSTD_freeCCtx(ctxDuplicated); |
| DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); |
| |
| DISPLAYLEVEL(4, "test%3i : frame built with duplicated context should be decompressible : ", testNb++); |
| result = ZSTD_decompress_usingDict(dctx, |
| decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, |
| compressedBuffer, cSize, |
| CNBuffer, dictSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != COMPRESSIBLE_NOISE_LENGTH - dictSize) goto _output_error; |
| ZSTD_freeDCtx(dctx); |
| DISPLAYLEVEL(4, "OK \n"); |
| } |
| |
| /* Decompression defense tests */ |
| DISPLAYLEVEL(4, "test%3i : Check input length for magic number : ", testNb++); |
| result = ZSTD_decompress(decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, CNBuffer, 3); |
| if (!ZSTD_isError(result)) goto _output_error; |
| if (result != (size_t)-ZSTD_error_srcSize_wrong) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : Check magic Number : ", testNb++); |
| ((char*)(CNBuffer))[0] = 1; |
| result = ZSTD_decompress(decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, CNBuffer, 4); |
| if (!ZSTD_isError(result)) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| /* block API tests */ |
| { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); |
| ZSTD_DCtx* const dctx = ZSTD_createDCtx(); |
| const size_t blockSize = 100 KB; |
| const size_t dictSize = 16 KB; |
| |
| /* basic block compression */ |
| DISPLAYLEVEL(4, "test%3i : Block compression test : ", testNb++); |
| result = ZSTD_compressBegin(cctx, 5); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize); |
| if (ZSTD_isError(cSize)) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : Block decompression test : ", testNb++); |
| result = ZSTD_decompressBegin(dctx); |
| if (ZSTD_isError(result)) goto _output_error; |
| result = ZSTD_decompressBlock(dctx, decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != blockSize) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| /* dictionary block compression */ |
| DISPLAYLEVEL(4, "test%3i : Dictionary Block compression test : ", testNb++); |
| result = ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize); |
| if (ZSTD_isError(cSize)) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| DISPLAYLEVEL(4, "test%3i : Dictionary Block decompression test : ", testNb++); |
| result = ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| result = ZSTD_decompressBlock(dctx, decodedBuffer, COMPRESSIBLE_NOISE_LENGTH, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != blockSize) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| ZSTD_freeCCtx(cctx); |
| ZSTD_freeDCtx(dctx); |
| } |
| |
| /* long rle test */ |
| { size_t sampleSize = 0; |
| DISPLAYLEVEL(4, "test%3i : Long RLE test : ", testNb++); |
| RDG_genBuffer(CNBuffer, sampleSize, compressibility, 0., randState); |
| memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1); |
| sampleSize += 256 KB - 1; |
| RDG_genBuffer((char*)CNBuffer+sampleSize, 96 KB, compressibility, 0., randState); |
| sampleSize += 96 KB; |
| cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1); |
| if (ZSTD_isError(cSize)) goto _output_error; |
| result = ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result!=sampleSize) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| } |
| |
| /* All zeroes test (#137 verif) */ |
| #define ZEROESLENGTH 100 |
| DISPLAYLEVEL(4, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH); |
| memset(CNBuffer, 0, ZEROESLENGTH); |
| result = ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize = result; |
| DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/ZEROESLENGTH*100); |
| |
| DISPLAYLEVEL(4, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH); |
| result = ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != ZEROESLENGTH) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| /* nbSeq limit test */ |
| #define _3BYTESTESTLENGTH 131000 |
| #define NB3BYTESSEQLOG 9 |
| #define NB3BYTESSEQ (1 << NB3BYTESSEQLOG) |
| #define NB3BYTESSEQMASK (NB3BYTESSEQ-1) |
| /* creates a buffer full of 3-bytes sequences */ |
| { BYTE _3BytesSeqs[NB3BYTESSEQ][3]; |
| U32 rSeed = 1; |
| |
| /* create batch of 3-bytes sequences */ |
| { int i; for (i=0; i < NB3BYTESSEQ; i++) { |
| _3BytesSeqs[i][0] = (BYTE)(FUZ_rand(&rSeed) & 255); |
| _3BytesSeqs[i][1] = (BYTE)(FUZ_rand(&rSeed) & 255); |
| _3BytesSeqs[i][2] = (BYTE)(FUZ_rand(&rSeed) & 255); |
| }} |
| |
| /* randomly fills CNBuffer with prepared 3-bytes sequences */ |
| { int i; for (i=0; i < _3BYTESTESTLENGTH; ) { /* note : CNBuffer size > _3BYTESTESTLENGTH+3 */ |
| U32 id = FUZ_rand(&rSeed) & NB3BYTESSEQMASK; |
| ((BYTE*)CNBuffer)[i+0] = _3BytesSeqs[id][0]; |
| ((BYTE*)CNBuffer)[i+1] = _3BytesSeqs[id][1]; |
| ((BYTE*)CNBuffer)[i+2] = _3BytesSeqs[id][2]; |
| i += 3; |
| } }} |
| DISPLAYLEVEL(4, "test%3i : compress lots 3-bytes sequences : ", testNb++); |
| result = ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH), CNBuffer, _3BYTESTESTLENGTH, 19); |
| if (ZSTD_isError(result)) goto _output_error; |
| cSize = result; |
| DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/_3BYTESTESTLENGTH*100); |
| |
| DISPLAYLEVEL(4, "test%3i : decompress lots 3-bytes sequence : ", testNb++); |
| result = ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize); |
| if (ZSTD_isError(result)) goto _output_error; |
| if (result != _3BYTESTESTLENGTH) goto _output_error; |
| DISPLAYLEVEL(4, "OK \n"); |
| |
| _end: |
| free(CNBuffer); |
| free(compressedBuffer); |
| free(decodedBuffer); |
| return testResult; |
| |
| _output_error: |
| testResult = 1; |
| DISPLAY("Error detected in Unit tests ! \n"); |
| goto _end; |
| } |
| |
| |
| 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 i; |
| for (i=0; i<max; i++) { |
| if (b1[i] != b2[i]) break; |
| } |
| return i; |
| } |
| |
| #define CHECK(cond, ...) if (cond) { DISPLAY("Error => "); DISPLAY(__VA_ARGS__); \ |
| DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); goto _output_error; } |
| |
| static const U32 maxSrcLog = 23; |
| static const U32 maxSampleLog = 22; |
| |
| int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, U32 maxDuration, double compressibility) |
| { |
| BYTE* cNoiseBuffer[5]; |
| BYTE* srcBuffer; |
| BYTE* cBuffer; |
| BYTE* dstBuffer; |
| BYTE* mirrorBuffer; |
| size_t srcBufferSize = (size_t)1<<maxSrcLog; |
| size_t dstBufferSize = (size_t)1<<maxSampleLog; |
| size_t cBufferSize = ZSTD_compressBound(dstBufferSize); |
| U32 result = 0; |
| U32 testNb = 0; |
| U32 coreSeed = seed, lseed = 0; |
| ZSTD_CCtx* refCtx; |
| ZSTD_CCtx* ctx; |
| ZSTD_DCtx* dctx; |
| U32 startTime = FUZ_GetMilliStart(); |
| |
| /* allocation */ |
| refCtx = ZSTD_createCCtx(); |
| ctx = ZSTD_createCCtx(); |
| dctx= ZSTD_createDCtx(); |
| 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); |
| dstBuffer = (BYTE*)malloc (dstBufferSize); |
| mirrorBuffer = (BYTE*)malloc (dstBufferSize); |
| cBuffer = (BYTE*)malloc (cBufferSize); |
| CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] |
| || !dstBuffer || !mirrorBuffer || !cBuffer || !refCtx || !ctx || !dctx, |
| "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 */ |
| srcBuffer = cNoiseBuffer[2]; |
| |
| /* catch up testNb */ |
| for (testNb=1; testNb < startTest; testNb++) FUZ_rand(&coreSeed); |
| |
| /* main test loop */ |
| for ( ; (testNb <= nbTests) || (FUZ_GetMilliSpan(startTime) < maxDuration); testNb++ ) { |
| size_t sampleSize, sampleStart, maxTestSize, totalTestSize; |
| size_t cSize, dSize, errorCode, totalCSize, totalGenSize; |
| U32 sampleSizeLog, buffNb, cLevelMod, nbChunks, n; |
| XXH64_CREATESTATE_STATIC(xxh64); |
| U64 crcOrig, crcDest; |
| int cLevel; |
| BYTE* sampleBuffer; |
| const BYTE* dict; |
| size_t dictSize; |
| |
| /* notification */ |
| if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); } |
| else { DISPLAYUPDATE(2, "\r%6u ", testNb); } |
| |
| FUZ_rand(&coreSeed); |
| { U32 const prime1 = 2654435761U; lseed = coreSeed ^ prime1; } |
| buffNb = FUZ_rand(&lseed) & 127; |
| if (buffNb & 7) buffNb=2; |
| else { |
| buffNb >>= 3; |
| if (buffNb & 7) { |
| const U32 tnb[2] = { 1, 3 }; |
| buffNb = tnb[buffNb >> 3]; |
| } else { |
| const U32 tnb[2] = { 0, 4 }; |
| buffNb = tnb[buffNb >> 3]; |
| } } |
| srcBuffer = cNoiseBuffer[buffNb]; |
| sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog; |
| sampleSize = (size_t)1 << sampleSizeLog; |
| sampleSize += FUZ_rand(&lseed) & (sampleSize-1); |
| sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize); |
| |
| /* create sample buffer (to catch read error with valgrind & sanitizers) */ |
| sampleBuffer = (BYTE*)malloc(sampleSize); |
| CHECK (sampleBuffer==NULL, "not enough memory for sample buffer"); |
| memcpy(sampleBuffer, srcBuffer + sampleStart, sampleSize); |
| crcOrig = XXH64(sampleBuffer, sampleSize, 0); |
| |
| /* compression test */ |
| cLevelMod = MIN( ZSTD_maxCLevel(), (U32)MAX(1, 55 - 3*(int)sampleSizeLog) ); /* high levels only for small samples, for manageable speed */ |
| cLevel = (FUZ_rand(&lseed) % cLevelMod) +1; |
| cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, sampleBuffer, sampleSize, cLevel); |
| CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed"); |
| |
| /* compression failure test : too small dest buffer */ |
| if (cSize > 3) { |
| const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */ |
| const size_t tooSmallSize = cSize - missing; |
| static const U32 endMark = 0x4DC2B1A9; |
| memcpy(dstBuffer+tooSmallSize, &endMark, 4); |
| errorCode = ZSTD_compressCCtx(ctx, dstBuffer, tooSmallSize, sampleBuffer, sampleSize, cLevel); |
| CHECK(!ZSTD_isError(errorCode), "ZSTD_compressCCtx should have failed ! (buffer too small : %u < %u)", (U32)tooSmallSize, (U32)cSize); |
| { U32 endCheck; memcpy(&endCheck, dstBuffer+tooSmallSize, 4); |
| CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow"); } |
| } |
| |
| /* frame header decompression test */ |
| { ZSTD_frameParams dParams; |
| size_t const check = ZSTD_getFrameParams(&dParams, cBuffer, cSize); |
| CHECK(ZSTD_isError(check), "Frame Parameters extraction failed"); |
| CHECK(dParams.frameContentSize != sampleSize, "Frame content size incorrect"); |
| } |
| |
| /* successful decompression test */ |
| { size_t margin = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1; |
| dSize = ZSTD_decompress(dstBuffer, sampleSize + margin, cBuffer, cSize); |
| CHECK(dSize != sampleSize, "ZSTD_decompress failed (%s) (srcSize : %u ; cSize : %u)", ZSTD_getErrorName(dSize), (U32)sampleSize, (U32)cSize); |
| crcDest = XXH64(dstBuffer, sampleSize, 0); |
| CHECK(crcOrig != crcDest, "decompression result corrupted (pos %u / %u)", (U32)findDiff(sampleBuffer, dstBuffer, sampleSize), (U32)sampleSize); |
| } |
| |
| free(sampleBuffer); /* no longer useful after this point */ |
| |
| /* truncated src decompression test */ |
| { const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */ |
| const size_t tooSmallSize = cSize - missing; |
| void* cBufferTooSmall = malloc(tooSmallSize); /* valgrind will catch overflows */ |
| CHECK(cBufferTooSmall == NULL, "not enough memory !"); |
| memcpy(cBufferTooSmall, cBuffer, tooSmallSize); |
| errorCode = ZSTD_decompress(dstBuffer, dstBufferSize, cBufferTooSmall, tooSmallSize); |
| CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed ! (truncated src buffer)"); |
| free(cBufferTooSmall); |
| } |
| |
| /* too small dst decompression test */ |
| if (sampleSize > 3) { |
| const size_t missing = (FUZ_rand(&lseed) % (sampleSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */ |
| const size_t tooSmallSize = sampleSize - missing; |
| static const BYTE token = 0xA9; |
| dstBuffer[tooSmallSize] = token; |
| errorCode = ZSTD_decompress(dstBuffer, tooSmallSize, cBuffer, cSize); |
| CHECK(!ZSTD_isError(errorCode), "ZSTD_decompress should have failed : %u > %u (dst buffer too small)", (U32)errorCode, (U32)tooSmallSize); |
| CHECK(dstBuffer[tooSmallSize] != token, "ZSTD_decompress : dst buffer overflow"); |
| } |
| |
| /* noisy src decompression test */ |
| if (cSize > 6) { |
| /* insert noise into src */ |
| { U32 const maxNbBits = FUZ_highbit32((U32)(cSize-4)); |
| size_t pos = 4; /* preserve magic number (too easy to detect) */ |
| for (;;) { |
| /* keep some original src */ |
| { U32 const nbBits = FUZ_rand(&lseed) % maxNbBits; |
| size_t const mask = (1<<nbBits) - 1; |
| size_t const skipLength = FUZ_rand(&lseed) & mask; |
| pos += skipLength; |
| } |
| if (pos <= cSize) break; |
| /* add noise */ |
| { U32 nbBits = FUZ_rand(&lseed) % maxNbBits; |
| size_t mask, noiseStart, noiseLength; |
| if (nbBits>0) nbBits--; |
| mask = (1<<nbBits) - 1; |
| noiseLength = (FUZ_rand(&lseed) & mask) + 1; |
| if ( pos+noiseLength > cSize ) noiseLength = cSize-pos; |
| noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseLength); |
| memcpy(cBuffer + pos, srcBuffer + noiseStart, noiseLength); |
| pos += noiseLength; |
| } } } |
| |
| /* decompress noisy source */ |
| { U32 const endMark = 0xA9B1C3D6; |
| memcpy(dstBuffer+sampleSize, &endMark, 4); |
| errorCode = ZSTD_decompress(dstBuffer, sampleSize, cBuffer, cSize); |
| /* result *may* be an unlikely success, but even then, it must strictly respect dst buffer boundaries */ |
| CHECK((!ZSTD_isError(errorCode)) && (errorCode>sampleSize), |
| "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (U32)errorCode, (U32)sampleSize); |
| { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4); |
| CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow"); } |
| } } /* noisy src decompression test */ |
| |
| /* Streaming compression of scattered segments test */ |
| XXH64_reset(xxh64, 0); |
| nbChunks = (FUZ_rand(&lseed) & 127) + 2; |
| sampleSizeLog = FUZ_rand(&lseed) % maxSrcLog; |
| maxTestSize = (size_t)1 << sampleSizeLog; |
| maxTestSize += FUZ_rand(&lseed) & (maxTestSize-1); |
| if (maxTestSize >= dstBufferSize) maxTestSize = dstBufferSize-1; |
| |
| sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog; |
| sampleSize = (size_t)1 << sampleSizeLog; |
| sampleSize += FUZ_rand(&lseed) & (sampleSize-1); |
| sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize); |
| dict = srcBuffer + sampleStart; |
| dictSize = sampleSize; |
| |
| errorCode = ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, (FUZ_rand(&lseed) % (20 - (sampleSizeLog/3))) + 1); |
| CHECK (ZSTD_isError(errorCode), "ZSTD_compressBegin_usingDict error : %s", ZSTD_getErrorName(errorCode)); |
| errorCode = ZSTD_copyCCtx(ctx, refCtx); |
| CHECK (ZSTD_isError(errorCode), "ZSTD_copyCCtx error : %s", ZSTD_getErrorName(errorCode)); |
| totalTestSize = 0; cSize = 0; |
| for (n=0; n<nbChunks; n++) { |
| sampleSizeLog = FUZ_rand(&lseed) % maxSampleLog; |
| sampleSize = (size_t)1 << sampleSizeLog; |
| sampleSize += FUZ_rand(&lseed) & (sampleSize-1); |
| sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize); |
| |
| if (cBufferSize-cSize < ZSTD_compressBound(sampleSize)) |
| /* avoid invalid dstBufferTooSmall */ |
| break; |
| if (totalTestSize+sampleSize > maxTestSize) break; |
| |
| errorCode = ZSTD_compressContinue(ctx, cBuffer+cSize, cBufferSize-cSize, srcBuffer+sampleStart, sampleSize); |
| CHECK (ZSTD_isError(errorCode), "multi-segments compression error : %s", ZSTD_getErrorName(errorCode)); |
| cSize += errorCode; |
| |
| XXH64_update(xxh64, srcBuffer+sampleStart, sampleSize); |
| memcpy(mirrorBuffer + totalTestSize, srcBuffer+sampleStart, sampleSize); |
| totalTestSize += sampleSize; |
| } |
| errorCode = ZSTD_compressEnd(ctx, cBuffer+cSize, cBufferSize-cSize); |
| CHECK (ZSTD_isError(errorCode), "multi-segments epilogue error : %s", ZSTD_getErrorName(errorCode)); |
| cSize += errorCode; |
| crcOrig = XXH64_digest(xxh64); |
| |
| /* streaming decompression test */ |
| errorCode = ZSTD_decompressBegin_usingDict(dctx, dict, dictSize); |
| CHECK (ZSTD_isError(errorCode), "cannot init DCtx : %s", ZSTD_getErrorName(errorCode)); |
| totalCSize = 0; |
| totalGenSize = 0; |
| while (totalCSize < cSize) { |
| size_t inSize = ZSTD_nextSrcSizeToDecompress(dctx); |
| size_t genSize = ZSTD_decompressContinue(dctx, dstBuffer+totalGenSize, dstBufferSize-totalGenSize, cBuffer+totalCSize, inSize); |
| CHECK (ZSTD_isError(genSize), "streaming decompression error : %s", ZSTD_getErrorName(genSize)); |
| totalGenSize += genSize; |
| totalCSize += inSize; |
| } |
| CHECK (ZSTD_nextSrcSizeToDecompress(dctx) != 0, "frame not fully decoded"); |
| CHECK (totalGenSize != totalTestSize, "decompressed data : wrong size") |
| CHECK (totalCSize != cSize, "compressed data should be fully read") |
| crcDest = XXH64(dstBuffer, totalTestSize, 0); |
| if (crcDest!=crcOrig) |
| errorCode = findDiff(mirrorBuffer, dstBuffer, totalTestSize); |
| CHECK (crcDest!=crcOrig, "streaming decompressed data corrupted : byte %u / %u (%02X!=%02X)", |
| (U32)errorCode, (U32)totalTestSize, dstBuffer[errorCode], mirrorBuffer[errorCode]); |
| } |
| DISPLAY("\r%u fuzzer tests completed \n", testNb-1); |
| |
| _cleanup: |
| ZSTD_freeCCtx(refCtx); |
| ZSTD_freeCCtx(ctx); |
| ZSTD_freeDCtx(dctx); |
| free(cNoiseBuffer[0]); |
| free(cNoiseBuffer[1]); |
| free(cNoiseBuffer[2]); |
| free(cNoiseBuffer[3]); |
| free(cNoiseBuffer[4]); |
| free(cBuffer); |
| free(dstBuffer); |
| free(mirrorBuffer); |
| 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:%u%%)\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, const char** argv) |
| { |
| U32 seed=0; |
| int seedset=0; |
| int argNb; |
| int nbTests = nbTestsDefault; |
| int testNb = 0; |
| U32 proba = FUZ_compressibility_default; |
| int result=0; |
| U32 mainPause = 0; |
| U32 maxDuration = 0; |
| const char* programName; |
| |
| /* Check command line */ |
| programName = argv[0]; |
| for (argNb=1; argNb<argc; argNb++) { |
| const 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++; maxDuration=0; |
| nbTests=0; |
| while ((*argument>='0') && (*argument<='9')) { |
| nbTests *= 10; |
| nbTests += *argument - '0'; |
| argument++; |
| } |
| break; |
| |
| case 'T': |
| argument++; |
| nbTests=0; maxDuration=0; |
| while ((*argument>='0') && (*argument<='9')) { |
| maxDuration *= 10; |
| maxDuration += *argument - '0'; |
| argument++; |
| } |
| if (*argument=='m') maxDuration *=60, argument++; |
| if (*argument=='n') argument++; |
| maxDuration *= 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>100) proba=100; |
| break; |
| |
| default: |
| return FUZ_usage(programName); |
| } } } } /* for (argNb=1; argNb<argc; argNb++) */ |
| |
| /* Get Seed */ |
| DISPLAY("Starting zstd 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 : %u%%\n", proba); |
| |
| if (testNb==0) |
| result = basicUnitTests(0, ((double)proba) / 100); /* constant seed for predictability */ |
| if (!result) |
| result = fuzzerTests(seed, nbTests, testNb, maxDuration, ((double)proba) / 100); |
| if (mainPause) { |
| int unused; |
| DISPLAY("Press Enter \n"); |
| unused = getchar(); |
| (void)unused; |
| } |
| return result; |
| } |