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Diffstat (limited to '')
| -rw-r--r-- | src/zstd/tests/fuzzer.c | 1643 |
1 files changed, 1643 insertions, 0 deletions
diff --git a/src/zstd/tests/fuzzer.c b/src/zstd/tests/fuzzer.c new file mode 100644 index 00000000..76df77af --- /dev/null +++ b/src/zstd/tests/fuzzer.c @@ -0,0 +1,1643 @@ +/* + * Copyright (c) 2015-present, Yann Collet, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under both the BSD-style license (found in the + * LICENSE file in the root directory of this source tree) and the GPLv2 (found + * in the COPYING file in the root directory of this source tree). + * You may select, at your option, one of the above-listed licenses. + */ + + +/*-************************************ +* 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 : 4204) /* disable: C4204: non-constant aggregate initializer */ +#endif + + +/*-************************************ +* Includes +**************************************/ +#include <stdlib.h> /* free */ +#include <stdio.h> /* fgets, sscanf */ +#include <string.h> /* strcmp */ +#include <time.h> /* clock_t */ +#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */ +#include "zstd.h" /* ZSTD_VERSION_STRING */ +#include "zstd_errors.h" /* ZSTD_getErrorCode */ +#include "zstdmt_compress.h" +#define ZDICT_STATIC_LINKING_ONLY +#include "zdict.h" /* ZDICT_trainFromBuffer */ +#include "datagen.h" /* RDG_genBuffer */ +#include "mem.h" +#define XXH_STATIC_LINKING_ONLY +#include "xxhash.h" /* XXH64 */ + + +/*-************************************ +* Constants +**************************************/ +#define KB *(1U<<10) +#define MB *(1U<<20) +#define GB *(1U<<30) + +static const U32 FUZ_compressibility_default = 50; +static const U32 nbTestsDefault = 30000; + + +/*-************************************ +* Display Macros +**************************************/ +#define DISPLAY(...) fprintf(stdout, __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_clockSpan(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \ + { g_displayClock = clock(); DISPLAY(__VA_ARGS__); \ + if (g_displayLevel>=4) fflush(stdout); } } +static const clock_t g_refreshRate = CLOCKS_PER_SEC / 6; +static clock_t g_displayClock = 0; + + +/*-******************************************************* +* Fuzzer functions +*********************************************************/ +#define MIN(a,b) ((a)<(b)?(a):(b)) +#define MAX(a,b) ((a)>(b)?(a):(b)) + +static clock_t FUZ_clockSpan(clock_t cStart) +{ + return clock() - cStart; /* works even when overflow; max span ~ 30mn */ +} + +#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) +static unsigned FUZ_rand(unsigned* 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; +} + + +/*============================================= +* Memory Tests +=============================================*/ +#if defined(__APPLE__) && defined(__MACH__) + +#include <malloc/malloc.h> /* malloc_size */ + +typedef struct { + unsigned long long totalMalloc; + size_t currentMalloc; + size_t peakMalloc; + unsigned nbMalloc; + unsigned nbFree; +} mallocCounter_t; + +static const mallocCounter_t INIT_MALLOC_COUNTER = { 0, 0, 0, 0, 0 }; + +static void* FUZ_mallocDebug(void* counter, size_t size) +{ + mallocCounter_t* const mcPtr = (mallocCounter_t*)counter; + void* const ptr = malloc(size); + if (ptr==NULL) return NULL; + DISPLAYLEVEL(4, "allocating %u KB => effectively %u KB \n", + (U32)(size >> 10), (U32)(malloc_size(ptr) >> 10)); /* OS-X specific */ + mcPtr->totalMalloc += size; + mcPtr->currentMalloc += size; + if (mcPtr->currentMalloc > mcPtr->peakMalloc) + mcPtr->peakMalloc = mcPtr->currentMalloc; + mcPtr->nbMalloc += 1; + return ptr; +} + +static void FUZ_freeDebug(void* counter, void* address) +{ + mallocCounter_t* const mcPtr = (mallocCounter_t*)counter; + DISPLAYLEVEL(4, "freeing %u KB \n", (U32)(malloc_size(address) >> 10)); + mcPtr->nbFree += 1; + mcPtr->currentMalloc -= malloc_size(address); /* OS-X specific */ + free(address); +} + +static void FUZ_displayMallocStats(mallocCounter_t count) +{ + DISPLAYLEVEL(3, "peak:%6u KB, nbMallocs:%2u, total:%6u KB \n", + (U32)(count.peakMalloc >> 10), + count.nbMalloc, + (U32)(count.totalMalloc >> 10)); +} + +#define CHECK_Z(f) { \ + size_t const err = f; \ + if (ZSTD_isError(err)) { \ + DISPLAY("Error => %s : %s ", \ + #f, ZSTD_getErrorName(err)); \ + exit(1); \ +} } + +static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part) +{ + size_t const inSize = 64 MB + 16 MB + 4 MB + 1 MB + 256 KB + 64 KB; /* 85.3 MB */ + size_t const outSize = ZSTD_compressBound(inSize); + void* const inBuffer = malloc(inSize); + void* const outBuffer = malloc(outSize); + + /* test only played in verbose mode, as they are long */ + if (g_displayLevel<3) return 0; + + /* Create compressible noise */ + if (!inBuffer || !outBuffer) { + DISPLAY("Not enough memory, aborting\n"); + exit(1); + } + RDG_genBuffer(inBuffer, inSize, compressibility, 0. /*auto*/, seed); + + /* simple compression tests */ + if (part <= 1) + { int compressionLevel; + for (compressionLevel=1; compressionLevel<=6; compressionLevel++) { + mallocCounter_t malcount = INIT_MALLOC_COUNTER; + ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount }; + ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem); + CHECK_Z( ZSTD_compressCCtx(cctx, outBuffer, outSize, inBuffer, inSize, compressionLevel) ); + ZSTD_freeCCtx(cctx); + DISPLAYLEVEL(3, "compressCCtx level %i : ", compressionLevel); + FUZ_displayMallocStats(malcount); + } } + + /* streaming compression tests */ + if (part <= 2) + { int compressionLevel; + for (compressionLevel=1; compressionLevel<=6; compressionLevel++) { + mallocCounter_t malcount = INIT_MALLOC_COUNTER; + ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount }; + ZSTD_CCtx* const cstream = ZSTD_createCStream_advanced(cMem); + ZSTD_outBuffer out = { outBuffer, outSize, 0 }; + ZSTD_inBuffer in = { inBuffer, inSize, 0 }; + CHECK_Z( ZSTD_initCStream(cstream, compressionLevel) ); + CHECK_Z( ZSTD_compressStream(cstream, &out, &in) ); + CHECK_Z( ZSTD_endStream(cstream, &out) ); + ZSTD_freeCStream(cstream); + DISPLAYLEVEL(3, "compressStream level %i : ", compressionLevel); + FUZ_displayMallocStats(malcount); + } } + + /* advanced MT API test */ + if (part <= 3) + { U32 nbThreads; + for (nbThreads=1; nbThreads<=4; nbThreads++) { + int compressionLevel; + for (compressionLevel=1; compressionLevel<=6; compressionLevel++) { + mallocCounter_t malcount = INIT_MALLOC_COUNTER; + ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount }; + ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem); + ZSTD_outBuffer out = { outBuffer, outSize, 0 }; + ZSTD_inBuffer in = { inBuffer, inSize, 0 }; + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, (U32)compressionLevel) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_nbThreads, nbThreads) ); + while ( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end) ) {} + ZSTD_freeCCtx(cctx); + DISPLAYLEVEL(3, "compress_generic,-T%u,end level %i : ", + nbThreads, compressionLevel); + FUZ_displayMallocStats(malcount); + } } } + + /* advanced MT streaming API test */ + if (part <= 4) + { U32 nbThreads; + for (nbThreads=1; nbThreads<=4; nbThreads++) { + int compressionLevel; + for (compressionLevel=1; compressionLevel<=6; compressionLevel++) { + mallocCounter_t malcount = INIT_MALLOC_COUNTER; + ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount }; + ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem); + ZSTD_outBuffer out = { outBuffer, outSize, 0 }; + ZSTD_inBuffer in = { inBuffer, inSize, 0 }; + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_compressionLevel, (U32)compressionLevel) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_p_nbThreads, nbThreads) ); + CHECK_Z( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_continue) ); + while ( ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end) ) {} + ZSTD_freeCCtx(cctx); + DISPLAYLEVEL(3, "compress_generic,-T%u,continue level %i : ", + nbThreads, compressionLevel); + FUZ_displayMallocStats(malcount); + } } } + + return 0; +} + +#else + +static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part) +{ + (void)seed; (void)compressibility; (void)part; + return 0; +} + +#endif + +/*============================================= +* Unit tests +=============================================*/ + +#define CHECK_V(var, fn) size_t const var = fn; if (ZSTD_isError(var)) goto _output_error +#define CHECK(fn) { CHECK_V(err, fn); } +#define CHECKPLUS(var, fn, more) { CHECK_V(var, fn); more; } + +static int basicUnitTests(U32 seed, double compressibility) +{ + size_t const CNBuffSize = 5 MB; + void* const CNBuffer = malloc(CNBuffSize); + size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize); + void* const compressedBuffer = malloc(compressedBufferSize); + void* const decodedBuffer = malloc(CNBuffSize); + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + int testResult = 0; + U32 testNb=0; + size_t cSize; + + /* Create compressible noise */ + if (!CNBuffer || !compressedBuffer || !decodedBuffer) { + DISPLAY("Not enough memory, aborting\n"); + testResult = 1; + goto _end; + } + RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed); + + /* Basic tests */ + DISPLAYLEVEL(4, "test%3i : ZSTD_getErrorName : ", testNb++); + { const char* errorString = ZSTD_getErrorName(0); + DISPLAYLEVEL(4, "OK : %s \n", errorString); + } + + DISPLAYLEVEL(4, "test%3i : ZSTD_getErrorName with wrong value : ", testNb++); + { const char* errorString = ZSTD_getErrorName(499); + DISPLAYLEVEL(4, "OK : %s \n", errorString); + } + + + DISPLAYLEVEL(4, "test%3i : compress %u bytes : ", testNb++, (U32)CNBuffSize); + { ZSTD_CCtx* cctx = ZSTD_createCCtx(); + if (cctx==NULL) goto _output_error; + CHECKPLUS(r, ZSTD_compressCCtx(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, 1), + cSize=r ); + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : size of cctx for level 1 : ", testNb++); + { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx); + DISPLAYLEVEL(4, "%u bytes \n", (U32)cctxSize); + } + ZSTD_freeCCtx(cctx); + } + + + DISPLAYLEVEL(4, "test%3i : ZSTD_getFrameContentSize test : ", testNb++); + { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : ZSTD_findDecompressedSize test : ", testNb++); + { unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++); + { size_t u; + for (u=0; u<CNBuffSize; u++) { + if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;; + } } + DISPLAYLEVEL(4, "OK \n"); + + + DISPLAYLEVEL(4, "test%3i : decompress with null dict : ", testNb++); + { size_t const r = ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, NULL, 0); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress with null DDict : ", testNb++); + { size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, NULL); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress with 1 missing byte : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize-1); + if (!ZSTD_isError(r)) goto _output_error; + if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_srcSize_wrong) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress with 1 too much byte : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize+1); + if (!ZSTD_isError(r)) goto _output_error; + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + + /* Static CCtx tests */ +#define STATIC_CCTX_LEVEL 3 + DISPLAYLEVEL(4, "test%3i : create static CCtx for level %u :", testNb++, STATIC_CCTX_LEVEL); + { size_t const staticCCtxSize = ZSTD_estimateCStreamSize(STATIC_CCTX_LEVEL); + void* const staticCCtxBuffer = malloc(staticCCtxSize); + size_t const staticDCtxSize = ZSTD_estimateDCtxSize(); + void* const staticDCtxBuffer = malloc(staticDCtxSize); + if (staticCCtxBuffer==NULL || staticDCtxBuffer==NULL) { + free(staticCCtxBuffer); + free(staticDCtxBuffer); + DISPLAY("Not enough memory, aborting\n"); + testResult = 1; + goto _end; + } + { ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize); + ZSTD_DCtx* staticDCtx = ZSTD_initStaticDCtx(staticDCtxBuffer, staticDCtxSize); + if ((staticCCtx==NULL) || (staticDCtx==NULL)) goto _output_error; + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL); + { size_t const r = ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL); + if (ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : simple compression test with static CCtx : ", testNb++); + CHECKPLUS(r, ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL), + cSize=r ); + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", + (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : simple decompression test with static DCtx : ", testNb++); + { size_t const r = ZSTD_decompressDCtx(staticDCtx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++); + { size_t u; + for (u=0; u<CNBuffSize; u++) { + if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) + goto _output_error;; + } } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init CCtx for too large level (must fail) : ", testNb++); + { size_t const r = ZSTD_compressBegin(staticCCtx, ZSTD_maxCLevel()); + if (!ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1); + { size_t const r = ZSTD_compressBegin(staticCCtx, 1); + if (ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init CStream for small level %u : ", testNb++, 1); + { size_t const r = ZSTD_initCStream(staticCCtx, 1); + if (ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init CStream with dictionary (should fail) : ", testNb++); + { size_t const r = ZSTD_initCStream_usingDict(staticCCtx, CNBuffer, 64 KB, 1); + if (!ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : init DStream (should fail) : ", testNb++); + { size_t const r = ZSTD_initDStream(staticDCtx); + if (ZSTD_isError(r)) goto _output_error; } + { ZSTD_outBuffer output = { decodedBuffer, CNBuffSize, 0 }; + ZSTD_inBuffer input = { compressedBuffer, ZSTD_FRAMEHEADERSIZE_MAX+1, 0 }; + size_t const r = ZSTD_decompressStream(staticDCtx, &output, &input); + if (!ZSTD_isError(r)) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + } + free(staticCCtxBuffer); + free(staticDCtxBuffer); + } + + + + /* ZSTDMT simple MT compression test */ + DISPLAYLEVEL(4, "test%3i : create ZSTDMT CCtx : ", testNb++); + { ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2); + if (mtctx==NULL) { + DISPLAY("mtctx : mot enough memory, aborting \n"); + testResult = 1; + goto _end; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : compress %u bytes with 2 threads : ", testNb++, (U32)CNBuffSize); + CHECKPLUS(r, ZSTDMT_compressCCtx(mtctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + 1), + cSize=r ); + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : decompressed size test : ", testNb++); + { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) { + DISPLAY("ZSTD_getFrameContentSize incorrect : %u != %u \n", (U32)rSize, (U32)CNBuffSize); + goto _output_error; + } } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++); + { size_t u; + for (u=0; u<CNBuffSize; u++) { + if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;; + } } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : compress -T2 with checksum : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(1, CNBuffSize, 0); + params.fParams.checksumFlag = 1; + params.fParams.contentSizeFlag = 1; + CHECKPLUS(r, ZSTDMT_compress_advanced(mtctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + NULL, params, 3 /*overlapRLog*/), + cSize=r ); + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, (U32)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + ZSTDMT_freeCCtx(mtctx); + } + + + /* Simple API multiframe test */ + DISPLAYLEVEL(4, "test%3i : compress multiple frames : ", testNb++); + { size_t off = 0; + int i; + int const segs = 4; + /* only use the first half so we don't push against size limit of compressedBuffer */ + size_t const segSize = (CNBuffSize / 2) / segs; + for (i = 0; i < segs; i++) { + CHECK_V(r, ZSTD_compress( + (BYTE *)compressedBuffer + off, CNBuffSize - off, + (BYTE *)CNBuffer + segSize * i, + segSize, 5)); + off += r; + if (i == segs/2) { + /* insert skippable frame */ + const U32 skipLen = 128 KB; + MEM_writeLE32((BYTE*)compressedBuffer + off, ZSTD_MAGIC_SKIPPABLE_START); + MEM_writeLE32((BYTE*)compressedBuffer + off + 4, skipLen); + off += skipLen + ZSTD_skippableHeaderSize; + } + } + cSize = off; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : get decompressed size of multiple frames : ", testNb++); + { unsigned long long const r = ZSTD_findDecompressedSize(compressedBuffer, cSize); + if (r != CNBuffSize / 2) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress multiple frames : ", testNb++); + { CHECK_V(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize)); + if (r != CNBuffSize / 2) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++); + if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error; + DISPLAYLEVEL(4, "OK \n"); + + /* Dictionary and CCtx Duplication tests */ + { ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx(); + ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx(); + static const size_t dictSize = 551; + + DISPLAYLEVEL(4, "test%3i : copy context too soon : ", testNb++); + { size_t const copyResult = ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0); + if (!ZSTD_isError(copyResult)) goto _output_error; } /* error must be detected */ + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : load dictionary into context : ", testNb++); + CHECK( ZSTD_compressBegin_usingDict(ctxOrig, CNBuffer, dictSize, 2) ); + CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, 0) ); /* Begin_usingDict implies unknown srcSize, so match that */ + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : compress with flat dictionary : ", testNb++); + cSize = 0; + CHECKPLUS(r, ZSTD_compressEnd(ctxOrig, compressedBuffer, compressedBufferSize, + (const char*)CNBuffer + dictSize, CNBuffSize - dictSize), + cSize += r); + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : frame built with flat dictionary should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + CNBuffer, dictSize), + if (r != CNBuffSize - dictSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : compress with duplicated context : ", testNb++); + { size_t const cSizeOrig = cSize; + cSize = 0; + CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, compressedBufferSize, + (const char*)CNBuffer + dictSize, CNBuffSize - dictSize), + cSize += r); + if (cSize != cSizeOrig) goto _output_error; /* should be identical ==> same size */ + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : frame built with duplicated context should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + CNBuffer, dictSize), + if (r != CNBuffSize - dictSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : decompress with DDict : ", testNb++); + { ZSTD_DDict* const ddict = ZSTD_createDDict(CNBuffer, dictSize); + size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict); + if (r != CNBuffSize - dictSize) goto _output_error; + DISPLAYLEVEL(4, "OK (size of DDict : %u) \n", (U32)ZSTD_sizeof_DDict(ddict)); + ZSTD_freeDDict(ddict); + } + + DISPLAYLEVEL(4, "test%3i : decompress with static DDict : ", testNb++); + { size_t const ddictBufferSize = ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy); + void* ddictBuffer = malloc(ddictBufferSize); + if (ddictBuffer == NULL) goto _output_error; + { ZSTD_DDict* const ddict = ZSTD_initStaticDDict(ddictBuffer, ddictBufferSize, CNBuffer, dictSize, ZSTD_dlm_byCopy); + size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict); + if (r != CNBuffSize - dictSize) goto _output_error; + } + free(ddictBuffer); + DISPLAYLEVEL(4, "OK (size of static DDict : %u) \n", (U32)ddictBufferSize); + } + + DISPLAYLEVEL(4, "test%3i : check content size on duplicated context : ", testNb++); + { size_t const testSize = CNBuffSize / 3; + { ZSTD_parameters p = ZSTD_getParams(2, testSize, dictSize); + p.fParams.contentSizeFlag = 1; + CHECK( ZSTD_compressBegin_advanced(ctxOrig, CNBuffer, dictSize, p, testSize-1) ); + } + CHECK( ZSTD_copyCCtx(ctxDuplicated, ctxOrig, testSize) ); + + CHECKPLUS(r, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, ZSTD_compressBound(testSize), + (const char*)CNBuffer + dictSize, testSize), + cSize = r); + { ZSTD_frameHeader zfh; + if (ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize)) goto _output_error; + if ((zfh.frameContentSize != testSize) && (zfh.frameContentSize != 0)) goto _output_error; + } } + DISPLAYLEVEL(4, "OK \n"); + + ZSTD_freeCCtx(ctxOrig); + ZSTD_freeCCtx(ctxDuplicated); + } + + /* Dictionary and dictBuilder tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t dictSize = 16 KB; + void* dictBuffer = malloc(dictSize); + size_t const totalSampleSize = 1 MB; + size_t const sampleUnitSize = 8 KB; + U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize); + size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t)); + U32 dictID; + + if (dictBuffer==NULL || samplesSizes==NULL) { + free(dictBuffer); + free(samplesSizes); + goto _output_error; + } + + DISPLAYLEVEL(4, "test%3i : dictBuilder : ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize, + CNBuffer, samplesSizes, nbSamples); + if (ZDICT_isError(dictSize)) goto _output_error; + DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)dictSize); + + DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, dictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(4, "OK : %u \n", dictID); + + DISPLAYLEVEL(4, "test%3i : compress with dictionary : ", testNb++); + cSize = ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + dictBuffer, dictSize, 4); + if (ZSTD_isError(cSize)) goto _output_error; + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : retrieve dictID from dictionary : ", testNb++); + { U32 const did = ZSTD_getDictID_fromDict(dictBuffer, dictSize); + if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */ + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : retrieve dictID from frame : ", testNb++); + { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize); + if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */ + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : frame built with dictionary should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : estimate CDict size : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + size_t const estimatedSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byRef); + DISPLAYLEVEL(4, "OK : %u \n", (U32)estimatedSize); + } + + DISPLAYLEVEL(4, "test%3i : compress with CDict ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, + ZSTD_dlm_byRef, ZSTD_dm_auto, + cParams, ZSTD_defaultCMem); + DISPLAYLEVEL(4, "(size : %u) : ", (U32)ZSTD_sizeof_CDict(cdict)); + cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, cdict); + ZSTD_freeCDict(cdict); + if (ZSTD_isError(cSize)) goto _output_error; + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : retrieve dictID from frame : ", testNb++); + { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize); + if (did != dictID) goto _output_error; /* non-conformant (content-only) dictionary */ + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : frame built with dictionary should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : compress with static CDict : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy); + void* const cdictBuffer = malloc(cdictSize); + if (cdictBuffer==NULL) goto _output_error; + { ZSTD_CDict* const cdict = ZSTD_initStaticCDict(cdictBuffer, cdictSize, + dictBuffer, dictSize, + ZSTD_dlm_byCopy, ZSTD_dm_auto, + cParams); + if (cdict == NULL) { + DISPLAY("ZSTD_initStaticCDict failed "); + goto _output_error; + } + cSize = ZSTD_compress_usingCDict(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, cdict); + if (ZSTD_isError(cSize)) { + DISPLAY("ZSTD_compress_usingCDict failed "); + goto _output_error; + } } + free(cdictBuffer); + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : ZSTD_compress_usingCDict_advanced, no contentSize, no dictID : ", testNb++); + { ZSTD_frameParameters const fParams = { 0 /* frameSize */, 1 /* checksum */, 1 /* noDictID*/ }; + ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dm_auto, cParams, ZSTD_defaultCMem); + cSize = ZSTD_compress_usingCDict_advanced(cctx, compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, cdict, fParams); + ZSTD_freeCDict(cdict); + if (ZSTD_isError(cSize)) goto _output_error; + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : try retrieving contentSize from frame : ", testNb++); + { U64 const contentSize = ZSTD_getFrameContentSize(compressedBuffer, cSize); + if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error; + } + DISPLAYLEVEL(4, "OK (unknown)\n"); + + DISPLAYLEVEL(4, "test%3i : frame built without dictID should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : ZSTD_compress_advanced, no dictID : ", testNb++); + { ZSTD_parameters p = ZSTD_getParams(3, CNBuffSize, dictSize); + p.fParams.noDictIDFlag = 1; + cSize = ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + dictBuffer, dictSize, p); + if (ZSTD_isError(cSize)) goto _output_error; + } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(4, "test%3i : frame built without dictID should be decompressible : ", testNb++); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : dictionary containing only header should return error : ", testNb++); + { + const size_t ret = ZSTD_decompress_usingDict( + dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, + "\x37\xa4\x30\xec\x11\x22\x33\x44", 8); + if (ZSTD_getErrorCode(ret) != ZSTD_error_dictionary_corrupted) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a good dictionary : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dm_fullDict, cParams, ZSTD_defaultCMem); + if (cdict==NULL) goto _output_error; + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Building cdict w/ ZSTD_dm_fullDict on a rawContent (must fail) : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBuffSize, dictSize); + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced((const char*)dictBuffer+1, dictSize-1, ZSTD_dlm_byRef, ZSTD_dm_fullDict, cParams, ZSTD_defaultCMem); + if (cdict!=NULL) goto _output_error; + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_auto should fail : ", testNb++); + { + size_t ret; + MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY); + ret = ZSTD_CCtx_loadDictionary_advanced( + cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dm_auto); + if (!ZSTD_isError(ret)) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dm_rawContent should pass : ", testNb++); + { + size_t ret; + MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY); + ret = ZSTD_CCtx_loadDictionary_advanced( + cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dm_rawContent); + if (ZSTD_isError(ret)) goto _output_error; + } + DISPLAYLEVEL(4, "OK \n"); + + ZSTD_freeCCtx(cctx); + free(dictBuffer); + free(samplesSizes); + } + + /* COVER dictionary builder tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t dictSize = 16 KB; + size_t optDictSize = dictSize; + void* dictBuffer = malloc(dictSize); + size_t const totalSampleSize = 1 MB; + size_t const sampleUnitSize = 8 KB; + U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize); + size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t)); + ZDICT_cover_params_t params; + U32 dictID; + + if (dictBuffer==NULL || samplesSizes==NULL) { + free(dictBuffer); + free(samplesSizes); + goto _output_error; + } + + DISPLAYLEVEL(4, "test%3i : ZDICT_trainFromBuffer_cover : ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + memset(¶ms, 0, sizeof(params)); + params.d = 1 + (FUZ_rand(&seed) % 16); + params.k = params.d + (FUZ_rand(&seed) % 256); + dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, dictSize, + CNBuffer, samplesSizes, nbSamples, + params); + if (ZDICT_isError(dictSize)) goto _output_error; + DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)dictSize); + + DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, dictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(4, "OK : %u \n", dictID); + + DISPLAYLEVEL(4, "test%3i : ZDICT_optimizeTrainFromBuffer_cover : ", testNb++); + memset(¶ms, 0, sizeof(params)); + params.steps = 4; + optDictSize = ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, optDictSize, + CNBuffer, samplesSizes, + nbSamples / 4, ¶ms); + if (ZDICT_isError(optDictSize)) goto _output_error; + DISPLAYLEVEL(4, "OK, created dictionary of size %u \n", (U32)optDictSize); + + DISPLAYLEVEL(4, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, optDictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(4, "OK : %u \n", dictID); + + ZSTD_freeCCtx(cctx); + free(dictBuffer); + free(samplesSizes); + } + + /* Decompression defense tests */ + DISPLAYLEVEL(4, "test%3i : Check input length for magic number : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 3); /* too small input */ + if (!ZSTD_isError(r)) goto _output_error; + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Check magic Number : ", testNb++); + ((char*)(CNBuffer))[0] = 1; + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, CNBuffer, 4); + if (!ZSTD_isError(r)) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + /* content size verification test */ + DISPLAYLEVEL(4, "test%3i : Content size verification : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const srcSize = 5000; + size_t const wrongSrcSize = (srcSize + 1000); + ZSTD_parameters params = ZSTD_getParams(1, wrongSrcSize, 0); + params.fParams.contentSizeFlag = 1; + CHECK( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, wrongSrcSize) ); + { size_t const result = ZSTD_compressEnd(cctx, decodedBuffer, CNBuffSize, CNBuffer, srcSize); + if (!ZSTD_isError(result)) goto _output_error; + if (ZSTD_getErrorCode(result) != ZSTD_error_srcSize_wrong) goto _output_error; + DISPLAYLEVEL(4, "OK : %s \n", ZSTD_getErrorName(result)); + } + ZSTD_freeCCtx(cctx); + } + + /* custom formats tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const inputSize = CNBuffSize / 2; /* won't cause pb with small dict size */ + + /* basic block compression */ + DISPLAYLEVEL(4, "test%3i : magic-less format test : ", testNb++); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_p_format, ZSTD_f_zstd1_magicless) ); + { ZSTD_inBuffer in = { CNBuffer, inputSize, 0 }; + ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(inputSize), 0 }; + size_t const result = ZSTD_compress_generic(cctx, &out, &in, ZSTD_e_end); + if (result != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + cSize = out.pos; + } + DISPLAYLEVEL(4, "OK (compress : %u -> %u bytes)\n", (U32)inputSize, (U32)cSize); + + DISPLAYLEVEL(4, "test%3i : decompress normally (should fail) : ", testNb++); + { size_t const decodeResult = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (ZSTD_getErrorCode(decodeResult) != ZSTD_error_prefix_unknown) goto _output_error; + DISPLAYLEVEL(4, "OK : %s \n", ZSTD_getErrorName(decodeResult)); + } + + DISPLAYLEVEL(4, "test%3i : decompress with magic-less instruction : ", testNb++); + ZSTD_DCtx_reset(dctx); + CHECK( ZSTD_DCtx_setFormat(dctx, ZSTD_f_zstd1_magicless) ); + { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 }; + ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 }; + size_t const result = ZSTD_decompress_generic(dctx, &out, &in); + if (result != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + if (out.pos != inputSize) goto _output_error; + DISPLAYLEVEL(4, "OK : regenerated %u bytes \n", (U32)out.pos); + } + + ZSTD_freeCCtx(cctx); + } + + /* block API tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + static const size_t dictSize = 65 KB; + static const size_t blockSize = 100 KB; /* won't cause pb with small dict size */ + size_t cSize2; + + /* basic block compression */ + DISPLAYLEVEL(4, "test%3i : Block compression test : ", testNb++); + CHECK( ZSTD_compressBegin(cctx, 5) ); + CHECK( ZSTD_getBlockSize(cctx) >= blockSize); + 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++); + CHECK( ZSTD_decompressBegin(dctx) ); + { CHECK_V(r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + if (r != blockSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + /* dictionary block compression */ + DISPLAYLEVEL(4, "test%3i : Dictionary Block compression test : ", testNb++); + CHECK( ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5) ); + cSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize); + if (ZSTD_isError(cSize)) goto _output_error; + cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize+blockSize, blockSize); + if (ZSTD_isError(cSize2)) goto _output_error; + memcpy((char*)compressedBuffer+cSize, (char*)CNBuffer+dictSize+blockSize, blockSize); /* fake non-compressed block */ + cSize2 = ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize+blockSize, ZSTD_compressBound(blockSize), + (char*)CNBuffer+dictSize+2*blockSize, blockSize); + if (ZSTD_isError(cSize2)) goto _output_error; + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : Dictionary Block decompression test : ", testNb++); + CHECK( ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize) ); + { CHECK_V( r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + if (r != blockSize) goto _output_error; } + ZSTD_insertBlock(dctx, (char*)decodedBuffer+blockSize, blockSize); /* insert non-compressed block into dctx history */ + { CHECK_V( r, ZSTD_decompressBlock(dctx, (char*)decodedBuffer+2*blockSize, CNBuffSize, (char*)compressedBuffer+cSize+blockSize, cSize2) ); + if (r != 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., seed+1); + memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1); + sampleSize += 256 KB - 1; + RDG_genBuffer((char*)CNBuffer+sampleSize, 96 KB, compressibility, 0., seed+2); + sampleSize += 96 KB; + cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1); + if (ZSTD_isError(cSize)) goto _output_error; + { CHECK_V(regenSize, ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize)); + if (regenSize!=sampleSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + } + + /* All zeroes test (test bug #137) */ + #define ZEROESLENGTH 100 + DISPLAYLEVEL(4, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH); + memset(CNBuffer, 0, ZEROESLENGTH); + { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1) ); + cSize = r; } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/ZEROESLENGTH*100); + + DISPLAYLEVEL(4, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH); + { CHECK_V(r, ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize) ); + if (r != 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; i += 3) { /* note : CNBuffer size > _3BYTESTESTLENGTH+3 */ + U32 const 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]; + } } } + DISPLAYLEVEL(4, "test%3i : compress lots 3-bytes sequences : ", testNb++); + { CHECK_V(r, ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH), + CNBuffer, _3BYTESTESTLENGTH, 19) ); + cSize = r; } + DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/_3BYTESTESTLENGTH*100); + + DISPLAYLEVEL(4, "test%3i : decompress lots 3-bytes sequence : ", testNb++); + { CHECK_V(r, ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize) ); + if (r != _3BYTESTESTLENGTH) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + DISPLAYLEVEL(4, "test%3i : incompressible data and ill suited dictionary : ", testNb++); + RDG_genBuffer(CNBuffer, CNBuffSize, 0.0, 0.1, seed); + { /* Train a dictionary on low characters */ + size_t dictSize = 16 KB; + void* const dictBuffer = malloc(dictSize); + size_t const totalSampleSize = 1 MB; + size_t const sampleUnitSize = 8 KB; + U32 const nbSamples = (U32)(totalSampleSize / sampleUnitSize); + size_t* const samplesSizes = (size_t*) malloc(nbSamples * sizeof(size_t)); + if (!dictBuffer || !samplesSizes) goto _output_error; + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + dictSize = ZDICT_trainFromBuffer(dictBuffer, dictSize, CNBuffer, samplesSizes, nbSamples); + if (ZDICT_isError(dictSize)) goto _output_error; + /* Reverse the characters to make the dictionary ill suited */ + { U32 u; + for (u = 0; u < CNBuffSize; ++u) { + ((BYTE*)CNBuffer)[u] = 255 - ((BYTE*)CNBuffer)[u]; + } + } + { /* Compress the data */ + size_t const inputSize = 500; + size_t const outputSize = ZSTD_compressBound(inputSize); + void* const outputBuffer = malloc(outputSize); + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + if (!outputBuffer || !cctx) goto _output_error; + CHECK(ZSTD_compress_usingDict(cctx, outputBuffer, outputSize, CNBuffer, inputSize, dictBuffer, dictSize, 1)); + free(outputBuffer); + ZSTD_freeCCtx(cctx); + } + + free(dictBuffer); + free(samplesSizes); + } + DISPLAYLEVEL(4, "OK \n"); + + + /* findFrameCompressedSize on skippable frames */ + DISPLAYLEVEL(4, "test%3i : frame compressed size of skippable frame : ", testNb++); + { const char* frame = "\x50\x2a\x4d\x18\x05\x0\x0\0abcde"; + size_t const frameSrcSize = 13; + if (ZSTD_findFrameCompressedSize(frame, frameSrcSize) != frameSrcSize) goto _output_error; } + DISPLAYLEVEL(4, "OK \n"); + + /* error string tests */ + DISPLAYLEVEL(4, "test%3i : testing ZSTD error code strings : ", testNb++); + if (strcmp("No error detected", ZSTD_getErrorName((ZSTD_ErrorCode)(0-ZSTD_error_no_error))) != 0) goto _output_error; + if (strcmp("No error detected", ZSTD_getErrorString(ZSTD_error_no_error)) != 0) goto _output_error; + if (strcmp("Unspecified error code", ZSTD_getErrorString((ZSTD_ErrorCode)(0-ZSTD_error_GENERIC))) != 0) goto _output_error; + if (strcmp("Error (generic)", ZSTD_getErrorName((size_t)0-ZSTD_error_GENERIC)) != 0) goto _output_error; + if (strcmp("Error (generic)", ZSTD_getErrorString(ZSTD_error_GENERIC)) != 0) goto _output_error; + if (strcmp("No error detected", ZSTD_getErrorName(ZSTD_error_GENERIC)) != 0) 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 u; + for (u=0; u<max; u++) { + if (b1[u] != b2[u]) break; + } + return u; +} + + +static ZSTD_parameters FUZ_makeParams(ZSTD_compressionParameters cParams, ZSTD_frameParameters fParams) +{ + ZSTD_parameters params; + params.cParams = cParams; + params.fParams = fParams; + return params; +} + +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); +} + +#undef CHECK +#define CHECK(cond, ...) { \ + if (cond) { \ + DISPLAY("Error => "); \ + DISPLAY(__VA_ARGS__); \ + DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); \ + goto _output_error; \ +} } + +#undef CHECK_Z +#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, U32 const maxDurationS, double compressibility, int bigTests) +{ + static const U32 maxSrcLog = 23; + static const U32 maxSampleLog = 22; + size_t const srcBufferSize = (size_t)1<<maxSrcLog; + size_t const dstBufferSize = (size_t)1<<maxSampleLog; + size_t const cBufferSize = ZSTD_compressBound(dstBufferSize); + BYTE* cNoiseBuffer[5]; + BYTE* srcBuffer; /* jumping pointer */ + BYTE* const cBuffer = (BYTE*) malloc (cBufferSize); + BYTE* const dstBuffer = (BYTE*) malloc (dstBufferSize); + BYTE* const mirrorBuffer = (BYTE*) malloc (dstBufferSize); + ZSTD_CCtx* const refCtx = ZSTD_createCCtx(); + ZSTD_CCtx* const ctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + U32 result = 0; + U32 testNb = 0; + U32 coreSeed = seed, lseed = 0; + clock_t const startClock = clock(); + clock_t const maxClockSpan = maxDurationS * CLOCKS_PER_SEC; + int const cLevelLimiter = bigTests ? 3 : 2; + + /* allocation */ + 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] + || !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_clockSpan(startClock) < maxClockSpan); testNb++ ) { + size_t sampleSize, maxTestSize, totalTestSize; + size_t cSize, totalCSize, totalGenSize; + U64 crcOrig; + 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; } + + /* 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]; + } + + /* select src segment */ + sampleSize = FUZ_randomLength(&lseed, maxSampleLog); + + /* create sample buffer (to catch read error with valgrind & sanitizers) */ + sampleBuffer = (BYTE*)malloc(sampleSize); + CHECK(sampleBuffer==NULL, "not enough memory for sample buffer"); + { size_t const sampleStart = FUZ_rand(&lseed) % (srcBufferSize - sampleSize); + memcpy(sampleBuffer, srcBuffer + sampleStart, sampleSize); } + crcOrig = XXH64(sampleBuffer, sampleSize, 0); + + /* compression tests */ + { unsigned const cLevel = + ( FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - (FUZ_highbit32((U32)sampleSize) / cLevelLimiter)) ) + + 1; + cSize = ZSTD_compressCCtx(ctx, cBuffer, cBufferSize, sampleBuffer, sampleSize, cLevel); + CHECK(ZSTD_isError(cSize), "ZSTD_compressCCtx failed : %s", ZSTD_getErrorName(cSize)); + + /* 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; + const U32 endMark = 0x4DC2B1A9; + memcpy(dstBuffer+tooSmallSize, &endMark, 4); + { size_t const 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_frameHeader zfh; + CHECK_Z( ZSTD_getFrameHeader(&zfh, cBuffer, cSize) ); + CHECK(zfh.frameContentSize != sampleSize, "Frame content size incorrect"); + } + + /* Decompressed size test */ + { unsigned long long const rSize = ZSTD_findDecompressedSize(cBuffer, cSize); + CHECK(rSize != sampleSize, "decompressed size incorrect"); + } + + /* successful decompression test */ + { size_t const margin = (FUZ_rand(&lseed) & 1) ? 0 : (FUZ_rand(&lseed) & 31) + 1; + size_t const 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); + { U64 const 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 */ + { size_t const missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */ + size_t const tooSmallSize = cSize - missing; + void* cBufferTooSmall = malloc(tooSmallSize); /* valgrind will catch read overflows */ + CHECK(cBufferTooSmall == NULL, "not enough memory !"); + memcpy(cBufferTooSmall, cBuffer, tooSmallSize); + { size_t const 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) { + size_t const missing = (FUZ_rand(&lseed) % (sampleSize-2)) + 1; /* no problem, as cSize > 4 (frameHeaderSizer) */ + size_t const tooSmallSize = sampleSize - missing; + static const BYTE token = 0xA9; + dstBuffer[tooSmallSize] = token; + { size_t const 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 const nbBitsCodes = FUZ_rand(&lseed) % maxNbBits; + U32 const nbBits = nbBitsCodes ? nbBitsCodes-1 : 0; + size_t const mask = (1<<nbBits) - 1; + size_t const rNoiseLength = (FUZ_rand(&lseed) & mask) + 1; + size_t const noiseLength = MIN(rNoiseLength, cSize-pos); + size_t const 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); + { size_t const decompressResult = 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(decompressResult)) && (decompressResult>sampleSize), + "ZSTD_decompress on noisy src : result is too large : %u > %u (dst buffer)", (U32)decompressResult, (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 test, scattered segments and dictionary =====*/ + + { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + int const cLevel = (FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - + (MAX(testLog, dictLog) / cLevelLimiter))) + + 1; + maxTestSize = FUZ_rLogLength(&lseed, testLog); + if (maxTestSize >= dstBufferSize) maxTestSize = dstBufferSize-1; + + dictSize = FUZ_rLogLength(&lseed, dictLog); /* needed also for decompression */ + dict = srcBuffer + (FUZ_rand(&lseed) % (srcBufferSize - dictSize)); + + if (FUZ_rand(&lseed) & 0xF) { + CHECK_Z ( ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, cLevel) ); + } else { + ZSTD_compressionParameters const cPar = ZSTD_getCParams(cLevel, 0, dictSize); + ZSTD_frameParameters const fPar = { FUZ_rand(&lseed)&1 /* contentSizeFlag */, + !(FUZ_rand(&lseed)&3) /* contentChecksumFlag*/, + 0 /*NodictID*/ }; /* note : since dictionary is fake, dictIDflag has no impact */ + ZSTD_parameters const p = FUZ_makeParams(cPar, fPar); + CHECK_Z ( ZSTD_compressBegin_advanced(refCtx, dict, dictSize, p, 0) ); + } + CHECK_Z( ZSTD_copyCCtx(ctx, refCtx, 0) ); + } + + { U32 const nbChunks = (FUZ_rand(&lseed) & 127) + 2; + U32 n; + XXH64_state_t xxhState; + XXH64_reset(&xxhState, 0); + for (totalTestSize=0, cSize=0, n=0 ; n<nbChunks ; n++) { + size_t const segmentSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const segmentStart = FUZ_rand(&lseed) % (srcBufferSize - segmentSize); + + if (cBufferSize-cSize < ZSTD_compressBound(segmentSize)) break; /* avoid invalid dstBufferTooSmall */ + if (totalTestSize+segmentSize > maxTestSize) break; + + { size_t const compressResult = ZSTD_compressContinue(ctx, cBuffer+cSize, cBufferSize-cSize, srcBuffer+segmentStart, segmentSize); + CHECK (ZSTD_isError(compressResult), "multi-segments compression error : %s", ZSTD_getErrorName(compressResult)); + cSize += compressResult; + } + XXH64_update(&xxhState, srcBuffer+segmentStart, segmentSize); + memcpy(mirrorBuffer + totalTestSize, srcBuffer+segmentStart, segmentSize); + totalTestSize += segmentSize; + } + + { size_t const flushResult = ZSTD_compressEnd(ctx, cBuffer+cSize, cBufferSize-cSize, NULL, 0); + CHECK (ZSTD_isError(flushResult), "multi-segments epilogue error : %s", ZSTD_getErrorName(flushResult)); + cSize += flushResult; + } + crcOrig = XXH64_digest(&xxhState); + } + + /* streaming decompression test */ + /* ensure memory requirement is good enough (should always be true) */ + { ZSTD_frameHeader zfh; + CHECK( ZSTD_getFrameHeader(&zfh, cBuffer, ZSTD_frameHeaderSize_max), + "ZSTD_getFrameHeader(): error retrieving frame information"); + { size_t const roundBuffSize = ZSTD_decodingBufferSize_min(zfh.windowSize, zfh.frameContentSize); + CHECK_Z(roundBuffSize); + CHECK((roundBuffSize > totalTestSize) && (zfh.frameContentSize!=ZSTD_CONTENTSIZE_UNKNOWN), + "ZSTD_decodingBufferSize_min() requires more memory (%u) than necessary (%u)", + (U32)roundBuffSize, (U32)totalTestSize ); + } } + if (dictSize<8) dictSize=0, dict=NULL; /* disable dictionary */ + CHECK_Z( ZSTD_decompressBegin_usingDict(dctx, dict, dictSize) ); + totalCSize = 0; + totalGenSize = 0; + while (totalCSize < cSize) { + size_t const inSize = ZSTD_nextSrcSizeToDecompress(dctx); + size_t const genSize = ZSTD_decompressContinue(dctx, dstBuffer+totalGenSize, dstBufferSize-totalGenSize, cBuffer+totalCSize, inSize); + CHECK (ZSTD_isError(genSize), "ZSTD_decompressContinue error : %s", ZSTD_getErrorName(genSize)); + totalGenSize += genSize; + totalCSize += inSize; + } + CHECK (ZSTD_nextSrcSizeToDecompress(dctx) != 0, "frame not fully decoded"); + CHECK (totalGenSize != totalTestSize, "streaming decompressed data : wrong size") + CHECK (totalCSize != cSize, "compressed data should be fully read") + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) { + size_t const errorPos = findDiff(mirrorBuffer, dstBuffer, totalTestSize); + CHECK (1, "streaming decompressed data corrupted : byte %u / %u (%02X!=%02X)", + (U32)errorPos, (U32)totalTestSize, dstBuffer[errorPos], mirrorBuffer[errorPos]); + } } + } /* for ( ; (testNb <= nbTests) */ + 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 +*********************************************************/ +static 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; +} + +/*! readU32FromChar() : + @return : unsigned integer value read from input in `char` format + allows and interprets K, KB, KiB, M, MB and MiB suffix. + Will also modify `*stringPtr`, advancing it to position where it stopped reading. + Note : function result can overflow if digit string > MAX_UINT */ +static unsigned readU32FromChar(const char** stringPtr) +{ + unsigned result = 0; + while ((**stringPtr >='0') && (**stringPtr <='9')) + result *= 10, result += **stringPtr - '0', (*stringPtr)++ ; + if ((**stringPtr=='K') || (**stringPtr=='M')) { + result <<= 10; + if (**stringPtr=='M') result <<= 10; + (*stringPtr)++ ; + if (**stringPtr=='i') (*stringPtr)++; + if (**stringPtr=='B') (*stringPtr)++; + } + return result; +} + +/** longCommandWArg() : + * check if *stringPtr is the same as longCommand. + * If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand. + * @return 0 and doesn't modify *stringPtr otherwise. + */ +static unsigned longCommandWArg(const char** stringPtr, const char* longCommand) +{ + size_t const comSize = strlen(longCommand); + int const result = !strncmp(*stringPtr, longCommand, comSize); + if (result) *stringPtr += comSize; + return result; +} + +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; + int bigTests = 1; + U32 memTestsOnly = 0; + const char* const programName = argv[0]; + + /* Check command line */ + 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]=='-') { + + if (longCommandWArg(&argument, "--memtest=")) { memTestsOnly = readU32FromChar(&argument); continue; } + + if (!strcmp(argument, "--memtest")) { memTestsOnly=1; 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 = 4; + break; + + case 'q': + argument++; + g_displayLevel--; + break; + + case 'p': /* pause at the end */ + argument++; + mainPause = 1; + break; + + case 'i': + argument++; maxDuration = 0; + nbTests = readU32FromChar(&argument); + break; + + case 'T': + argument++; + nbTests = 0; + maxDuration = readU32FromChar(&argument); + if (*argument=='s') argument++; /* seconds */ + if (*argument=='m') maxDuration *= 60, argument++; /* minutes */ + if (*argument=='n') argument++; + break; + + case 's': + argument++; + seedset = 1; + seed = readU32FromChar(&argument); + break; + + case 't': + argument++; + testNb = readU32FromChar(&argument); + break; + + case 'P': /* compressibility % */ + argument++; + proba = readU32FromChar(&argument); + if (proba>100) proba = 100; + break; + + default: + return (FUZ_usage(programName), 1); + } } } } /* for (argNb=1; argNb<argc; argNb++) */ + + /* Get Seed */ + DISPLAY("Starting zstd 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 : %u%%\n", proba); + + if (memTestsOnly) { + g_displayLevel = MAX(3, g_displayLevel); + return FUZ_mallocTests(seed, ((double)proba) / 100, memTestsOnly); + } + + if (nbTests < testNb) nbTests = testNb; + + if (testNb==0) + result = basicUnitTests(0, ((double)proba) / 100); /* constant seed for predictability */ + if (!result) + result = fuzzerTests(seed, nbTests, testNb, maxDuration, ((double)proba) / 100, bigTests); + if (mainPause) { + int unused; + DISPLAY("Press Enter \n"); + unused = getchar(); + (void)unused; + } + return result; +} |