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Diffstat (limited to 'src/zstd/tests/fuzzer.c')
| -rw-r--r-- | src/zstd/tests/fuzzer.c | 3422 |
1 files changed, 3422 insertions, 0 deletions
diff --git a/src/zstd/tests/fuzzer.c b/src/zstd/tests/fuzzer.c new file mode 100644 index 000000000..8ac2864f3 --- /dev/null +++ b/src/zstd/tests/fuzzer.c @@ -0,0 +1,3422 @@ +/* + * Copyright (c) 2015-2020, 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 */ +#undef NDEBUG +#include <assert.h> +#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */ +#include "debug.h" /* DEBUG_STATIC_ASSERT */ +#include "fse.h" +#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 "mem.h" +#include "datagen.h" /* RDG_genBuffer */ +#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */ +#include "xxhash.h" /* XXH64 */ +#include "util.h" +#include "timefn.h" /* SEC_TO_MICRO, UTIL_time_t, UTIL_TIME_INITIALIZER, UTIL_clockSpanMicro, UTIL_getTime */ +/* must be included after util.h, due to ERROR macro redefinition issue on Visual Studio */ +#include "zstd_internal.h" /* ZSTD_WORKSPACETOOLARGE_MAXDURATION, ZSTD_WORKSPACETOOLARGE_FACTOR, KB, MB */ + + +/*-************************************ +* Constants +**************************************/ +#define GB *(1U<<30) + +static const int FUZ_compressibility_default = 50; +static const int 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; + +static const U64 g_refreshRate = SEC_TO_MICRO / 6; +static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER; + +#define DISPLAYUPDATE(l, ...) \ + if (g_displayLevel>=l) { \ + if ((UTIL_clockSpanMicro(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \ + { g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \ + if (g_displayLevel>=4) fflush(stderr); } \ + } + + +/*-******************************************************* +* Compile time test +*********************************************************/ +#undef MIN +#undef MAX +/* Declaring the function, to avoid -Wmissing-prototype */ +void FUZ_bug976(void); +void FUZ_bug976(void) +{ /* these constants shall not depend on MIN() macro */ + assert(ZSTD_HASHLOG_MAX < 31); + assert(ZSTD_CHAINLOG_MAX < 31); +} + + +/*-******************************************************* +* Internal functions +*********************************************************/ +#define MIN(a,b) ((a)<(b)?(a):(b)) +#define MAX(a,b) ((a)>(b)?(a):(b)) + +#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) +static U32 FUZ_rand(U32* 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 U32 FUZ_highbit32(U32 v32) +{ + unsigned nbBits = 0; + if (v32==0) return 0; + while (v32) v32 >>= 1, nbBits++; + return nbBits; +} + + +/*============================================= +* Test macros +=============================================*/ +#define CHECK_Z(f) { \ + size_t const err = f; \ + if (ZSTD_isError(err)) { \ + DISPLAY("Error => %s : %s ", \ + #f, ZSTD_getErrorName(err)); \ + exit(1); \ +} } + +#define CHECK_VAR(var, fn) var = fn; if (ZSTD_isError(var)) { DISPLAYLEVEL(1, "%s : fails : %s \n", #fn, ZSTD_getErrorName(var)); goto _output_error; } +#define CHECK_NEWV(var, fn) size_t const CHECK_VAR(var, fn) +#define CHECK(fn) { CHECK_NEWV(err, fn); } +#define CHECKPLUS(var, fn, more) { CHECK_NEWV(var, fn); more; } + +#define CHECK_OP(op, lhs, rhs) { \ + if (!((lhs) op (rhs))) { \ + DISPLAY("Error L%u => FAILED %s %s %s ", __LINE__, #lhs, #op, #rhs); \ + goto _output_error; \ + } \ +} +#define CHECK_EQ(lhs, rhs) CHECK_OP(==, lhs, rhs) +#define CHECK_LT(lhs, rhs) CHECK_OP(<, lhs, rhs) + + +/*============================================= +* 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", + (unsigned)(size >> 10), (unsigned)(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", (unsigned)(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", + (unsigned)(count.peakMalloc >> 10), + count.nbMalloc, + (unsigned)(count.totalMalloc >> 10)); +} + +static int FUZ_mallocTests_internal(unsigned seed, double compressibility, unsigned part, + void* inBuffer, size_t inSize, void* outBuffer, size_t 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) + { int 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); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) ); + CHECK_Z( ZSTD_compress2(cctx, outBuffer, outSize, inBuffer, inSize) ); + ZSTD_freeCCtx(cctx); + DISPLAYLEVEL(3, "compress_generic,-T%i,end level %i : ", + nbThreads, compressionLevel); + FUZ_displayMallocStats(malcount); + } } } + + /* advanced MT streaming API test */ + if (part <= 4) + { int 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_c_compressionLevel, compressionLevel) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) ); + CHECK_Z( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue) ); + while ( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) ) {} + ZSTD_freeCCtx(cctx); + DISPLAYLEVEL(3, "compress_generic,-T%i,continue level %i : ", + nbThreads, compressionLevel); + FUZ_displayMallocStats(malcount); + } } } + + return 0; +} + +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); + int result; + + /* Create compressible noise */ + if (!inBuffer || !outBuffer) { + DISPLAY("Not enough memory, aborting \n"); + exit(1); + } + + result = FUZ_mallocTests_internal(seed, compressibility, part, + inBuffer, inSize, outBuffer, outSize); + + free(inBuffer); + free(outBuffer); + return result; +} + +#else + +static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part) +{ + (void)seed; (void)compressibility; (void)part; + return 0; +} + +#endif + +static void FUZ_decodeSequences(BYTE* dst, ZSTD_Sequence* seqs, size_t seqsSize, BYTE* src, size_t size) +{ + size_t i; + size_t j; + for(i = 0; i < seqsSize - 1; ++i) { + assert(dst + seqs[i].litLength + seqs[i].matchLength < dst + size); + assert(src + seqs[i].litLength + seqs[i].matchLength < src + size); + + memcpy(dst, src, seqs[i].litLength); + dst += seqs[i].litLength; + src += seqs[i].litLength; + size -= seqs[i].litLength; + + for (j = 0; j < seqs[i].matchLength; ++j) + dst[j] = dst[j - seqs[i].offset]; + dst += seqs[i].matchLength; + src += seqs[i].matchLength; + size -= seqs[i].matchLength; + } + memcpy(dst, src, size); +} + +/*============================================= +* Unit tests +=============================================*/ + +static int basicUnitTests(U32 const 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); + int testResult = 0; + unsigned 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(3, "test%3u : ZSTD_getErrorName : ", testNb++); + { const char* errorString = ZSTD_getErrorName(0); + DISPLAYLEVEL(3, "OK : %s \n", errorString); + } + + DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName with wrong value : ", testNb++); + { const char* errorString = ZSTD_getErrorName(499); + DISPLAYLEVEL(3, "OK : %s \n", errorString); + } + + DISPLAYLEVEL(3, "test%3u : min compression level : ", testNb++); + { int const mcl = ZSTD_minCLevel(); + DISPLAYLEVEL(3, "%i (OK) \n", mcl); + } + + DISPLAYLEVEL(3, "test%3u : ZSTD_versionNumber : ", testNb++); + { unsigned const vn = ZSTD_versionNumber(); + DISPLAYLEVEL(3, "%u (OK) \n", vn); + } + + DISPLAYLEVEL(3, "test%3u : compress %u bytes : ", testNb++, (unsigned)CNBuffSize); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + if (cctx==NULL) goto _output_error; + CHECK_VAR(cSize, ZSTD_compressCCtx(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, 1) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "test%3i : size of cctx for level 1 : ", testNb++); + { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx); + DISPLAYLEVEL(3, "%u bytes \n", (unsigned)cctxSize); + } + ZSTD_freeCCtx(cctx); + } + + DISPLAYLEVEL(3, "test%3i : decompress skippable frame -8 size : ", testNb++); + { + char const skippable8[] = "\x50\x2a\x4d\x18\xf8\xff\xff\xff"; + size_t const size = ZSTD_decompress(NULL, 0, skippable8, 8); + if (!ZSTD_isError(size)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_getFrameContentSize test : ", testNb++); + { unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_getDecompressedSize test : ", testNb++); + { unsigned long long const rSize = ZSTD_getDecompressedSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_findDecompressedSize test : ", testNb++); + { unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize); + if (rSize != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : tight ZSTD_decompressBound test : ", testNb++); + { + unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize); + if (bound != CNBuffSize) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with invalid srcSize : ", testNb++); + { + unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize - 1); + if (bound != ZSTD_CONTENTSIZE_ERROR) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_checkCParams : ", testNb++); + { + ZSTD_parameters params = ZSTD_getParams(3, 0, 0); + assert(!ZSTD_checkCParams(params.cParams)); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_createDCtx_advanced and ZSTD_sizeof_DCtx: ", testNb++); + { + ZSTD_DCtx* const dctx = ZSTD_createDCtx_advanced(ZSTD_defaultCMem); + assert(dctx != NULL); + assert(ZSTD_sizeof_DCtx(dctx) != 0); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : misc unaccounted for zstd symbols : ", testNb++); + { + /* %p takes a void*. In ISO C, it's illegal to cast a function pointer + * to a data pointer. (Although in POSIX you're required to be allowed + * to do it...) So we have to fall back to our trusty friend memcpy. */ + unsigned (* const funcptr_getDictID)(const ZSTD_DDict* ddict) = + ZSTD_getDictID_fromDDict; + ZSTD_DStream* (* const funcptr_createDStream)( + ZSTD_customMem customMem) = ZSTD_createDStream_advanced; + void (* const funcptr_copyDCtx)( + ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx) = ZSTD_copyDCtx; + ZSTD_nextInputType_e (* const funcptr_nextInputType)(ZSTD_DCtx* dctx) = + ZSTD_nextInputType; + const void *voidptr_getDictID; + const void *voidptr_createDStream; + const void *voidptr_copyDCtx; + const void *voidptr_nextInputType; + DEBUG_STATIC_ASSERT(sizeof(funcptr_getDictID) == sizeof(voidptr_getDictID)); + memcpy( + (void*)&voidptr_getDictID, + (const void*)&funcptr_getDictID, + sizeof(void*)); + memcpy( + (void*)&voidptr_createDStream, + (const void*)&funcptr_createDStream, + sizeof(void*)); + memcpy( + (void*)&voidptr_copyDCtx, + (const void*)&funcptr_copyDCtx, + sizeof(void*)); + memcpy( + (void*)&voidptr_nextInputType, + (const void*)&funcptr_nextInputType, + sizeof(void*)); + DISPLAYLEVEL(3, "%p ", voidptr_getDictID); + DISPLAYLEVEL(3, "%p ", voidptr_createDStream); + DISPLAYLEVEL(3, "%p ", voidptr_copyDCtx); + DISPLAYLEVEL(3, "%p ", voidptr_nextInputType); + } + DISPLAYLEVEL(3, ": OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress with null dict : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL); + { size_t const r = ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + NULL, 0); + if (r != CNBuffSize) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress with null DDict : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL); + { size_t const r = ZSTD_decompress_usingDDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + NULL); + if (r != CNBuffSize) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress too large input : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, compressedBufferSize); + if (!ZSTD_isError(r)) goto _output_error; + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress into NULL buffer : ", testNb++); + { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, compressedBufferSize); + if (!ZSTD_isError(r)) goto _output_error; + if (ZSTD_getErrorCode(r) != ZSTD_error_dstSize_tooSmall) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with content size missing : ", testNb++); + { /* create compressed buffer with content size missing */ + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) ); + CHECK_VAR(cSize, ZSTD_compress2(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize) ); + ZSTD_freeCCtx(cctx); + } + { /* ensure frame content size is missing */ + ZSTD_frameHeader zfh; + size_t const ret = ZSTD_getFrameHeader(&zfh, compressedBuffer, compressedBufferSize); + if (ret != 0 || zfh.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error; + } + { /* ensure CNBuffSize <= decompressBound */ + unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, compressedBufferSize); + if (CNBuffSize > bound) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d: check DCtx size is reduced after many oversized calls : ", testNb++); + { + size_t const largeFrameSrcSize = 200; + size_t const smallFrameSrcSize = 10; + size_t const nbFrames = 256; + + size_t i = 0, consumed = 0, produced = 0, prevDCtxSize = 0; + int sizeReduced = 0; + + BYTE* const dst = (BYTE*)compressedBuffer; + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + + /* create a large frame and then a bunch of small frames */ + size_t srcSize = ZSTD_compress((void*)dst, + compressedBufferSize, CNBuffer, largeFrameSrcSize, 3); + for (i = 0; i < nbFrames; i++) + srcSize += ZSTD_compress((void*)(dst + srcSize), + compressedBufferSize - srcSize, CNBuffer, + smallFrameSrcSize, 3); + + /* decompressStream and make sure that dctx size was reduced at least once */ + while (consumed < srcSize) { + ZSTD_inBuffer in = {(void*)(dst + consumed), MIN(1, srcSize - consumed), 0}; + ZSTD_outBuffer out = {(BYTE*)CNBuffer + produced, CNBuffSize - produced, 0}; + ZSTD_decompressStream(dctx, &out, &in); + consumed += in.pos; + produced += out.pos; + + /* success! size was reduced from the previous frame */ + if (prevDCtxSize > ZSTD_sizeof_DCtx(dctx)) + sizeReduced = 1; + + prevDCtxSize = ZSTD_sizeof_DCtx(dctx); + } + + assert(sizeReduced); + + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ldm fill dict out-of-bounds check", testNb++); + { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + + size_t const size = (1U << 10); + size_t const dstCapacity = ZSTD_compressBound(size); + void* dict = (void*)malloc(size); + void* src = (void*)malloc(size); + void* dst = (void*)malloc(dstCapacity); + + RDG_genBuffer(dict, size, 0.5, 0.5, seed); + RDG_genBuffer(src, size, 0.5, 0.5, seed); + + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1)); + assert(!ZSTD_isError(ZSTD_compress_usingDict(cctx, dst, dstCapacity, src, size, dict, size, 3))); + + ZSTD_freeCCtx(cctx); + free(dict); + free(src); + free(dst); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : testing dict compression with enableLdm and forceMaxWindow : ", testNb++); + { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + void* dict = (void*)malloc(CNBuffSize); + int nbWorkers; + + for (nbWorkers = 0; nbWorkers < 3; ++nbWorkers) { + RDG_genBuffer(dict, CNBuffSize, 0.5, 0.5, seed); + RDG_genBuffer(CNBuffer, CNBuffSize, 0.6, 0.6, seed); + + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbWorkers)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceMaxWindow, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1)); + CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, CNBuffSize)); + cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize); + CHECK_Z(cSize); + CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, CNBuffSize)); + } + + ZSTD_freeCCtx(cctx); + ZSTD_freeDCtx(dctx); + free(dict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : testing ldm dictionary gets invalidated : ", testNb++); + { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + void* dict = (void*)malloc(CNBuffSize); + size_t const kWindowLog = 10; + size_t const kWindowSize = (size_t)1 << kWindowLog; + size_t const dictSize = kWindowSize * 10; + size_t const srcSize1 = kWindowSize / 2; + size_t const srcSize2 = kWindowSize * 10; + + if (CNBuffSize < dictSize) goto _output_error; + + RDG_genBuffer(dict, dictSize, 0.5, 0.5, seed); + RDG_genBuffer(CNBuffer, srcSize1 + srcSize2, 0.5, 0.5, seed); + + /* Enable checksum to verify round trip. */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1)); + /* Disable content size to skip single-pass decompression. */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, (int)kWindowLog)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmMinMatch, 32)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmHashRateLog, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmHashLog, 16)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_ldmBucketSizeLog, 3)); + + /* Round trip once with a dictionary. */ + CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize)); + cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, srcSize1); + CHECK_Z(cSize); + CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, dictSize)); + cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, srcSize2); + /* Streaming decompression to catch out of bounds offsets. */ + { + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + ZSTD_outBuffer out = {decodedBuffer, CNBuffSize, 0}; + size_t const dSize = ZSTD_decompressStream(dctx, &out, &in); + CHECK_Z(dSize); + if (dSize != 0) goto _output_error; + } + + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2)); + /* Round trip once with a dictionary. */ + CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize)); + { + ZSTD_inBuffer in = {CNBuffer, srcSize1, 0}; + ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0}; + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + cSize = out.pos; + } + CHECK_Z(ZSTD_decompress_usingDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, dict, dictSize)); + { + ZSTD_inBuffer in = {CNBuffer, srcSize2, 0}; + ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0}; + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + cSize = out.pos; + } + /* Streaming decompression to catch out of bounds offsets. */ + { + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + ZSTD_outBuffer out = {decodedBuffer, CNBuffSize, 0}; + size_t const dSize = ZSTD_decompressStream(dctx, &out, &in); + CHECK_Z(dSize); + if (dSize != 0) goto _output_error; + } + + ZSTD_freeCCtx(cctx); + ZSTD_freeDCtx(dctx); + free(dict); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Note: this test takes 0.5 seconds to run */ + DISPLAYLEVEL(3, "test%3i : testing refPrefx vs refPrefx + ldm (size comparison) : ", testNb++); + { + /* test a big buffer so that ldm can take effect */ + size_t const size = 100 MB; + int const windowLog = 27; + size_t const dstSize = ZSTD_compressBound(size); + + void* dict = (void*)malloc(size); + void* src = (void*)malloc(size); + void* dst = (void*)malloc(dstSize); + void* recon = (void*)malloc(size); + + size_t refPrefixCompressedSize = 0; + size_t refPrefixLdmComrpessedSize = 0; + size_t reconSize = 0; + + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + + /* make dict and src the same uncompressible data */ + RDG_genBuffer(src, size, 0, 0, seed); + memcpy(dict, src, size); + assert(!memcmp(dict, src, size)); + + /* set level 1 and windowLog to cover src */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, windowLog)); + + /* compress on level 1 using just refPrefix and no ldm */ + ZSTD_CCtx_refPrefix(cctx, dict, size); + refPrefixCompressedSize = ZSTD_compress2(cctx, dst, dstSize, src, size); + assert(!ZSTD_isError(refPrefixCompressedSize)); + + /* test round trip just refPrefix */ + ZSTD_DCtx_refPrefix(dctx, dict, size); + reconSize = ZSTD_decompressDCtx(dctx, recon, size, dst, refPrefixCompressedSize); + assert(!ZSTD_isError(reconSize)); + assert(reconSize == size); + assert(!memcmp(recon, src, size)); + + /* compress on level 1 using refPrefix and ldm */ + ZSTD_CCtx_refPrefix(cctx, dict, size);; + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1)) + refPrefixLdmComrpessedSize = ZSTD_compress2(cctx, dst, dstSize, src, size); + assert(!ZSTD_isError(refPrefixLdmComrpessedSize)); + + /* test round trip refPrefix + ldm*/ + ZSTD_DCtx_refPrefix(dctx, dict, size); + reconSize = ZSTD_decompressDCtx(dctx, recon, size, dst, refPrefixLdmComrpessedSize); + assert(!ZSTD_isError(reconSize)); + assert(reconSize == size); + assert(!memcmp(recon, src, size)); + + /* make sure that refPrefixCompressedSize is significantly greater */ + assert(refPrefixCompressedSize > 10 * refPrefixLdmComrpessedSize); + /* make sure the ldm comrpessed size is less than 1% of original */ + assert((double)refPrefixLdmComrpessedSize / (double)size < 0.01); + + ZSTD_freeDCtx(dctx); + ZSTD_freeCCtx(cctx); + free(recon); + free(dict); + free(src); + free(dst); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d: superblock uncompressible data, too many nocompress superblocks : ", testNb++); + { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + const BYTE* src = (BYTE*)CNBuffer; BYTE* dst = (BYTE*)compressedBuffer; + size_t srcSize = 321656; size_t dstCapacity = ZSTD_compressBound(srcSize); + + /* This is the number of bytes to stream before ending. This value + * was obtained by trial and error :/. */ + + const size_t streamCompressThreshold = 161792; + const size_t streamCompressDelta = 1024; + + /* The first 1/5 of the buffer is compressible and the last 4/5 is + * uncompressible. This is an approximation of the type of data + * the fuzzer generated to catch this bug. Streams like this were making + * zstd generate noCompress superblocks (which are larger than the src + * they come from). Do this enough times, and we'll run out of room + * and throw a dstSize_tooSmall error. */ + + const size_t compressiblePartSize = srcSize/5; + const size_t uncompressiblePartSize = srcSize-compressiblePartSize; + RDG_genBuffer(CNBuffer, compressiblePartSize, 0.5, 0.5, seed); + RDG_genBuffer((BYTE*)CNBuffer+compressiblePartSize, uncompressiblePartSize, 0, 0, seed); + + /* Setting target block size so that superblock is used */ + + assert(cctx != NULL); + ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 81); + + { size_t read; + for (read = 0; read < streamCompressThreshold; read += streamCompressDelta) { + ZSTD_inBuffer in = {src, streamCompressDelta, 0}; + ZSTD_outBuffer out = {dst, dstCapacity, 0}; + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + src += streamCompressDelta; srcSize -= streamCompressDelta; + dst += out.pos; dstCapacity -= out.pos;}} + + /* This is trying to catch a dstSize_tooSmall error */ + + { ZSTD_inBuffer in = {src, srcSize, 0}; + ZSTD_outBuffer out = {dst, dstCapacity, 0}; + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));} + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d: superblock with no literals : ", testNb++); + /* Generate the same data 20 times over */ + { + size_t const avgChunkSize = CNBuffSize / 20; + size_t b; + for (b = 0; b < CNBuffSize; b += avgChunkSize) { + size_t const chunkSize = MIN(CNBuffSize - b, avgChunkSize); + RDG_genBuffer((char*)CNBuffer + b, chunkSize, compressibility, 0. /* auto */, seed); + } + } + { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const normalCSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize); + size_t const allowedExpansion = (CNBuffSize * 3 / 1000); + size_t superCSize; + CHECK_Z(normalCSize); + ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 19); + ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 1000); + superCSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize); + CHECK_Z(superCSize); + if (superCSize > normalCSize + allowedExpansion) { + DISPLAYLEVEL(1, "Superblock too big: %u > %u + %u \n", (U32)superCSize, (U32)normalCSize, (U32)allowedExpansion); + goto _output_error; + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0. /*auto*/, seed); + DISPLAYLEVEL(3, "test%3d: superblock enough room for checksum : ", testNb++) + { + /* This tests whether or not we leave enough room for the checksum at the end + * of the dst buffer. The bug that motivated this test was found by the + * stream_round_trip fuzzer but this crashes for the same reason and is + * far more compact than re-creating the stream_round_trip fuzzer's code path */ + ZSTD_CCtx *cctx = ZSTD_createCCtx(); + ZSTD_CCtx_setParameter(cctx, ZSTD_c_targetCBlockSize, 64); + assert(!ZSTD_isError(ZSTD_compress2(cctx, compressedBuffer, 1339, CNBuffer, 1278))); + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress a NULL input with each level : ", testNb++); + { int level = -1; + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + if (!cctx) goto _output_error; + for (level = -1; level <= ZSTD_maxCLevel(); ++level) { + CHECK_Z( ZSTD_compress(compressedBuffer, compressedBufferSize, NULL, 0, level) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, level) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, NULL, 0) ); + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : check CCtx size after compressing empty input : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const r = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 19); + if (ZSTD_isError(r)) goto _output_error; + if (ZSTD_sizeof_CCtx(cctx) > (1U << 20)) goto _output_error; + ZSTD_freeCCtx(cctx); + cSize = r; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : decompress empty frame into NULL : ", testNb++); + { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, cSize); + if (ZSTD_isError(r)) goto _output_error; + if (r != 0) goto _output_error; + } + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_outBuffer output; + if (cctx==NULL) goto _output_error; + output.dst = compressedBuffer; + output.size = compressedBufferSize; + output.pos = 0; + CHECK_Z( ZSTD_initCStream(cctx, 1) ); /* content size unknown */ + CHECK_Z( ZSTD_flushStream(cctx, &output) ); /* ensure no possibility to "concatenate" and determine the content size */ + CHECK_Z( ZSTD_endStream(cctx, &output) ); + ZSTD_freeCCtx(cctx); + /* single scan decompression */ + { size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, output.pos); + if (ZSTD_isError(r)) goto _output_error; + if (r != 0) goto _output_error; + } + /* streaming decompression */ + { ZSTD_DCtx* const dstream = ZSTD_createDStream(); + ZSTD_inBuffer dinput; + ZSTD_outBuffer doutput; + size_t ipos; + if (dstream==NULL) goto _output_error; + dinput.src = compressedBuffer; + dinput.size = 0; + dinput.pos = 0; + doutput.dst = NULL; + doutput.size = 0; + doutput.pos = 0; + CHECK_Z ( ZSTD_initDStream(dstream) ); + for (ipos=1; ipos<=output.pos; ipos++) { + dinput.size = ipos; + CHECK_Z ( ZSTD_decompressStream(dstream, &doutput, &dinput) ); + } + if (doutput.pos != 0) goto _output_error; + ZSTD_freeDStream(dstream); + } + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : re-use CCtx with expanding block size : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_parameters const params = ZSTD_getParams(1, ZSTD_CONTENTSIZE_UNKNOWN, 0); + assert(params.fParams.contentSizeFlag == 1); /* block size will be adapted if pledgedSrcSize is enabled */ + CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, 1 /*pledgedSrcSize*/) ); + CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, 1) ); /* creates a block size of 1 */ + + CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */ + { size_t const inSize = 2* 128 KB; + size_t const outSize = ZSTD_compressBound(inSize); + CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, outSize, CNBuffer, inSize) ); + /* will fail if blockSize is not resized */ + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : re-using a CCtx should compress the same : ", testNb++); + { size_t const sampleSize = 30; + int i; + for (i=0; i<20; i++) + ((char*)CNBuffer)[i] = (char)i; /* ensure no match during initial section */ + memcpy((char*)CNBuffer + 20, CNBuffer, 10); /* create one match, starting from beginning of sample, which is the difficult case (see #1241) */ + for (i=1; i<=19; i++) { + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t size1, size2; + DISPLAYLEVEL(5, "l%i ", i); + size1 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i); + CHECK_Z(size1); + + size2 = ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize, i); + CHECK_Z(size2); + CHECK_EQ(size1, size2); + + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, i) ); + size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, sampleSize); + CHECK_Z(size2); + CHECK_EQ(size1, size2); + + size2 = ZSTD_compress2(cctx, compressedBuffer, ZSTD_compressBound(sampleSize) - 1, CNBuffer, sampleSize); /* force streaming, as output buffer is not large enough to guarantee success */ + CHECK_Z(size2); + CHECK_EQ(size1, size2); + + { ZSTD_inBuffer inb; + ZSTD_outBuffer outb; + inb.src = CNBuffer; + inb.pos = 0; + inb.size = sampleSize; + outb.dst = compressedBuffer; + outb.pos = 0; + outb.size = ZSTD_compressBound(sampleSize) - 1; /* force streaming, as output buffer is not large enough to guarantee success */ + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); + assert(inb.pos == inb.size); + CHECK_EQ(size1, outb.pos); + } + + ZSTD_freeCCtx(cctx); + } + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : btultra2 & 1st block : ", testNb++); + { size_t const sampleSize = 1024; + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_inBuffer inb; + ZSTD_outBuffer outb; + inb.src = CNBuffer; + inb.pos = 0; + inb.size = 0; + outb.dst = compressedBuffer; + outb.pos = 0; + outb.size = compressedBufferSize; + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, ZSTD_maxCLevel()) ); + + inb.size = sampleSize; /* start with something, so that context is already used */ + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */ + assert(inb.pos == inb.size); + outb.pos = 0; /* cancel output */ + + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(cctx, sampleSize) ); + inb.size = 4; /* too small size : compression will be skipped */ + inb.pos = 0; + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) ); + assert(inb.pos == inb.size); + + inb.size += 5; /* too small size : compression will be skipped */ + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) ); + assert(inb.pos == inb.size); + + inb.size += 11; /* small enough to attempt compression */ + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_flush) ); + assert(inb.pos == inb.size); + + assert(inb.pos < sampleSize); + inb.size = sampleSize; /* large enough to trigger stats_init, but no longer at beginning */ + CHECK_Z( ZSTD_compressStream2(cctx, &outb, &inb, ZSTD_e_end) ); /* will break internal assert if stats_init is not disabled */ + assert(inb.pos == inb.size); + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : ZSTD_CCtx_getParameter() : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_outBuffer out = {NULL, 0, 0}; + ZSTD_inBuffer in = {NULL, 0, 0}; + int value; + + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 3); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, 0); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, ZSTD_HASHLOG_MIN)); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 3); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, ZSTD_HASHLOG_MIN); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7)); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 7); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, ZSTD_HASHLOG_MIN); + /* Start a compression job */ + ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 7); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, ZSTD_HASHLOG_MIN); + /* Reset the CCtx */ + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 7); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, ZSTD_HASHLOG_MIN); + /* Reset the parameters */ + ZSTD_CCtx_reset(cctx, ZSTD_reset_parameters); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_compressionLevel, &value)); + CHECK_EQ(value, 3); + CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_hashLog, &value)); + CHECK_EQ(value, 0); + + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + /* this test is really too long, and should be made faster */ + DISPLAYLEVEL(3, "test%3d : overflow protection with large windowLog : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_parameters params = ZSTD_getParams(-999, ZSTD_CONTENTSIZE_UNKNOWN, 0); + size_t const nbCompressions = ((1U << 31) / CNBuffSize) + 2; /* ensure U32 overflow protection is triggered */ + size_t cnb; + assert(cctx != NULL); + params.fParams.contentSizeFlag = 0; + params.cParams.windowLog = ZSTD_WINDOWLOG_MAX; + for (cnb = 0; cnb < nbCompressions; ++cnb) { + DISPLAYLEVEL(6, "run %zu / %zu \n", cnb, nbCompressions); + CHECK_Z( ZSTD_compressBegin_advanced(cctx, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN) ); /* re-use same parameters */ + CHECK_Z( ZSTD_compressEnd(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize) ); + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3d : size down context : ", testNb++); + { ZSTD_CCtx* const largeCCtx = ZSTD_createCCtx(); + assert(largeCCtx != NULL); + CHECK_Z( ZSTD_compressBegin(largeCCtx, 19) ); /* streaming implies ZSTD_CONTENTSIZE_UNKNOWN, which maximizes memory usage */ + CHECK_Z( ZSTD_compressEnd(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1) ); + { size_t const largeCCtxSize = ZSTD_sizeof_CCtx(largeCCtx); /* size of context must be measured after compression */ + { ZSTD_CCtx* const smallCCtx = ZSTD_createCCtx(); + assert(smallCCtx != NULL); + CHECK_Z(ZSTD_compressCCtx(smallCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1)); + { size_t const smallCCtxSize = ZSTD_sizeof_CCtx(smallCCtx); + DISPLAYLEVEL(5, "(large) %zuKB > 32*%zuKB (small) : ", + largeCCtxSize>>10, smallCCtxSize>>10); + assert(largeCCtxSize > 32* smallCCtxSize); /* note : "too large" definition is handled within zstd_compress.c . + * make this test case extreme, so that it doesn't depend on a possibly fluctuating definition */ + } + ZSTD_freeCCtx(smallCCtx); + } + { U32 const maxNbAttempts = 1100; /* nb of usages before triggering size down is handled within zstd_compress.c. + * currently defined as 128x, but could be adjusted in the future. + * make this test long enough so that it's not too much tied to the current definition within zstd_compress.c */ + unsigned u; + for (u=0; u<maxNbAttempts; u++) { + CHECK_Z(ZSTD_compressCCtx(largeCCtx, compressedBuffer, compressedBufferSize, CNBuffer, 1, 1)); + if (ZSTD_sizeof_CCtx(largeCCtx) < largeCCtxSize) break; /* sized down */ + } + DISPLAYLEVEL(5, "size down after %u attempts : ", u); + if (u==maxNbAttempts) goto _output_error; /* no sizedown happened */ + } + } + ZSTD_freeCCtx(largeCCtx); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Static CCtx tests */ +#define STATIC_CCTX_LEVEL 4 + DISPLAYLEVEL(3, "test%3i : create static CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL); + { size_t const staticCStreamSize = ZSTD_estimateCStreamSize(STATIC_CCTX_LEVEL); + void* const staticCCtxBuffer = malloc(staticCStreamSize); + size_t const staticDCtxSize = ZSTD_estimateDCtxSize(); + void* const staticDCtxBuffer = malloc(staticDCtxSize); + DISPLAYLEVEL(4, "CStream size = %u, ", (U32)staticCStreamSize); + if (staticCCtxBuffer==NULL || staticDCtxBuffer==NULL) { + free(staticCCtxBuffer); + free(staticDCtxBuffer); + DISPLAY("Not enough memory, aborting\n"); + testResult = 1; + goto _end; + } + { size_t const smallInSize = 32 KB; + ZSTD_compressionParameters const cparams_small = ZSTD_getCParams(STATIC_CCTX_LEVEL, smallInSize, 0); + size_t const smallCCtxSize = ZSTD_estimateCCtxSize_usingCParams(cparams_small); + size_t const staticCCtxSize = ZSTD_estimateCCtxSize(STATIC_CCTX_LEVEL); + ZSTD_CCtx* staticCCtx = ZSTD_initStaticCCtx(staticCCtxBuffer, smallCCtxSize); + ZSTD_DCtx* const staticDCtx = ZSTD_initStaticDCtx(staticDCtxBuffer, staticDCtxSize); + DISPLAYLEVEL(4, "Full CCtx size = %u, ", (U32)staticCCtxSize); + DISPLAYLEVEL(4, "CCtx for 32 KB = %u, ", (U32)smallCCtxSize); + if ((staticCCtx==NULL) || (staticDCtx==NULL)) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress small input with small static CCtx : ", testNb++); + CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + CNBuffer, smallInSize, STATIC_CCTX_LEVEL) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", + (unsigned)cSize, (double)cSize/smallInSize*100); + + DISPLAYLEVEL(3, "test%3i : compress large input with small static CCtx (must fail) : ", testNb++); + { size_t const r = ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL); + if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_memory_allocation) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : resize context to full CCtx size : ", testNb++); + staticCCtx = ZSTD_initStaticCStream(staticCCtxBuffer, staticCCtxSize); + DISPLAYLEVEL(4, "staticCCtxBuffer = %p, staticCCtx = %p , ", staticCCtxBuffer, staticCCtx); + if (staticCCtx == NULL) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress large input with static CCtx : ", testNb++); + CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", + (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "test%3i : compress small input often enough to trigger context reduce : ", testNb++); + { int nbc; + assert(staticCCtxSize > smallCCtxSize * ZSTD_WORKSPACETOOLARGE_FACTOR); /* ensure size down scenario */ + assert(CNBuffSize > smallInSize + ZSTD_WORKSPACETOOLARGE_MAXDURATION + 3); + for (nbc=0; nbc<ZSTD_WORKSPACETOOLARGE_MAXDURATION+2; nbc++) { + CHECK_Z(ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + (char*)CNBuffer + nbc, smallInSize, + STATIC_CCTX_LEVEL) ); + } } + DISPLAYLEVEL(3, "OK \n") + + DISPLAYLEVEL(3, "test%3i : init CCtx for level %u : ", testNb++, STATIC_CCTX_LEVEL); + CHECK_Z( ZSTD_compressBegin(staticCCtx, STATIC_CCTX_LEVEL) ); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compression again with static CCtx : ", testNb++); + CHECK_VAR(cSize, ZSTD_compressCCtx(staticCCtx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, STATIC_CCTX_LEVEL) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", + (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + if (memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : init CCtx for small level %u (should work again) : ", testNb++, 1); + CHECK( ZSTD_compressBegin(staticCCtx, 1) ); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : use CStream on CCtx-sized static context (should fail) : ", testNb++); + CHECK_Z( ZSTD_initCStream(staticCCtx, STATIC_CCTX_LEVEL) ); /* note : doesn't allocate */ + { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 }; + size_t const r = ZSTD_compressStream(staticCCtx, &output, &input); /* now allocates, should fail */ + if (!ZSTD_isError(r)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : resize context to CStream size, then stream compress : ", testNb++); + staticCCtx = ZSTD_initStaticCStream(staticCCtxBuffer, staticCStreamSize); + assert(staticCCtx != NULL); + CHECK_Z( ZSTD_initCStream(staticCCtx, STATIC_CCTX_LEVEL) ); /* note : doesn't allocate */ + { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 }; + CHECK_Z( ZSTD_compressStream(staticCCtx, &output, &input) ); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : CStream for small level %u : ", testNb++, 1); + CHECK_Z( ZSTD_initCStream(staticCCtx, 1) ); /* note : doesn't allocate */ + { ZSTD_outBuffer output = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer input = { CNBuffer, CNBuffSize, 0 }; + CHECK_Z( ZSTD_compressStream(staticCCtx, &output, &input) ); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : init static 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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : use DStream on DCtx-sized static context (should fail) : ", testNb++); + CHECK_Z( ZSTD_initDStream(staticDCtx) ); + { 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(3, "OK \n"); + } + free(staticCCtxBuffer); + free(staticDCtxBuffer); + } + + DISPLAYLEVEL(3, "test%3i : Static context sizes for negative levels : ", testNb++); + { size_t const cctxSizeN1 = ZSTD_estimateCCtxSize(-1); + size_t const cctxSizeP1 = ZSTD_estimateCCtxSize(1); + size_t const cstreamSizeN1 = ZSTD_estimateCStreamSize(-1); + size_t const cstreamSizeP1 = ZSTD_estimateCStreamSize(1); + + if (!(0 < cctxSizeN1 && cctxSizeN1 <= cctxSizeP1)) goto _output_error; + if (!(0 < cstreamSizeN1 && cstreamSizeN1 <= cstreamSizeP1)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + + /* ZSTDMT simple MT compression test */ + DISPLAYLEVEL(3, "test%3i : create ZSTDMT CCtx : ", testNb++); + { ZSTDMT_CCtx* const mtctx = ZSTDMT_createCCtx(2); + if (mtctx==NULL) { + DISPLAY("mtctx : not enough memory, aborting \n"); + testResult = 1; + goto _end; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3u : compress %u bytes with 2 threads : ", testNb++, (unsigned)CNBuffSize); + CHECK_VAR(cSize, ZSTDMT_compressCCtx(mtctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + 1) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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", (unsigned)rSize, (unsigned)CNBuffSize); + goto _output_error; + } } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress -T2 with checksum : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(1, CNBuffSize, 0); + params.fParams.checksumFlag = 1; + params.fParams.contentSizeFlag = 1; + CHECK_VAR(cSize, ZSTDMT_compress_advanced(mtctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + NULL, params, 3 /*overlapRLog*/) ); + } + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (r != CNBuffSize) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + ZSTDMT_freeCCtx(mtctx); + } + + DISPLAYLEVEL(3, "test%3u : compress empty string and decompress with small window log : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + char out[32]; + if (cctx == NULL || dctx == NULL) goto _output_error; + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) ); + CHECK_VAR(cSize, ZSTD_compress2(cctx, out, sizeof(out), NULL, 0) ); + DISPLAYLEVEL(3, "OK (%u bytes)\n", (unsigned)cSize); + + CHECK( ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 10) ); + { char const* outPtr = out; + ZSTD_inBuffer inBuffer = { outPtr, cSize, 0 }; + ZSTD_outBuffer outBuffer = { NULL, 0, 0 }; + size_t dSize; + CHECK_VAR(dSize, ZSTD_decompressStream(dctx, &outBuffer, &inBuffer) ); + if (dSize != 0) goto _output_error; + } + + ZSTD_freeDCtx(dctx); + ZSTD_freeCCtx(cctx); + } + + DISPLAYLEVEL(3, "test%3i : compress -T2 with/without literals compression : ", testNb++) + { ZSTD_CCtx* cctx = ZSTD_createCCtx(); + size_t cSize1, cSize2; + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2) ); + cSize1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize); + CHECK(cSize1); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_literalCompressionMode, ZSTD_lcm_uncompressed) ); + cSize2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize); + CHECK(cSize2); + CHECK_LT(cSize1, cSize2); + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Multithreaded ZSTD_compress2() with rsyncable : ", testNb++) + { ZSTD_CCtx* cctx = ZSTD_createCCtx(); + /* Set rsyncable and don't give the ZSTD_compressBound(CNBuffSize) so + * ZSTDMT is forced to not take the shortcut. + */ + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 1) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_rsyncable, 1) ); + CHECK( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize - 1, CNBuffer, CNBuffSize) ); + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : setting multithreaded parameters : ", testNb++) + { ZSTD_CCtx_params* params = ZSTD_createCCtxParams(); + int value; + /* Check that the overlap log and job size are unset. */ + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) ); + CHECK_EQ(value, 0); + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) ); + CHECK_EQ(value, 0); + /* Set and check the overlap log and job size. */ + CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_overlapLog, 5) ); + CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_jobSize, 2 MB) ); + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) ); + CHECK_EQ(value, 5); + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) ); + CHECK_EQ(value, 2 MB); + /* Set the number of workers and check the overlap log and job size. */ + CHECK( ZSTD_CCtxParams_setParameter(params, ZSTD_c_nbWorkers, 2) ); + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_overlapLog, &value) ); + CHECK_EQ(value, 5); + CHECK( ZSTD_CCtxParams_getParameter(params, ZSTD_c_jobSize, &value) ); + CHECK_EQ(value, 2 MB); + ZSTD_freeCCtxParams(params); + + } + DISPLAYLEVEL(3, "OK \n"); + + /* Simple API multiframe test */ + DISPLAYLEVEL(3, "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_NEWV(r, ZSTD_compress( + (BYTE*)compressedBuffer + off, CNBuffSize - off, + (BYTE*)CNBuffer + segSize * (size_t)i, segSize, + 5) ); + off += r; + if (i == segs/2) { + /* insert skippable frame */ + const U32 skipLen = 129 KB; + MEM_writeLE32((BYTE*)compressedBuffer + off, ZSTD_MAGIC_SKIPPABLE_START); + MEM_writeLE32((BYTE*)compressedBuffer + off + 4, skipLen); + off += skipLen + ZSTD_SKIPPABLEHEADERSIZE; + } + } + cSize = off; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : get tight decompressed bound of multiple frames : ", testNb++); + { unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, cSize); + if (bound != CNBuffSize / 2) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress multiple frames : ", testNb++); + { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize)); + if (r != CNBuffSize / 2) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + /* Dictionary and CCtx Duplication tests */ + { ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx(); + ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + static const size_t dictSize = 551; + assert(dctx != NULL); assert(ctxOrig != NULL); assert(ctxDuplicated != NULL); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK (size of DDict : %u) \n", (unsigned)ZSTD_sizeof_DDict(ddict)); + ZSTD_freeDDict(ddict); + } + + DISPLAYLEVEL(3, "test%3i : decompress with static DDict : ", testNb++); + { size_t const ddictBufferSize = ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy); + void* const ddictBuffer = malloc(ddictBufferSize); + if (ddictBuffer == NULL) goto _output_error; + { const ZSTD_DDict* const ddict = ZSTD_initStaticDDict(ddictBuffer, ddictBufferSize, CNBuffer, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto); + size_t const r = ZSTD_decompress_usingDDict(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize, ddict); + if (r != CNBuffSize - dictSize) goto _output_error; + } + free(ddictBuffer); + DISPLAYLEVEL(3, "OK (size of static DDict : %u) \n", (unsigned)ddictBufferSize); + } + + DISPLAYLEVEL(3, "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) ); + + CHECK_VAR(cSize, ZSTD_compressEnd(ctxDuplicated, compressedBuffer, ZSTD_compressBound(testSize), + (const char*)CNBuffer + dictSize, testSize) ); + { ZSTD_frameHeader zfh; + if (ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize)) goto _output_error; + if ((zfh.frameContentSize != testSize) && (zfh.frameContentSize != 0)) goto _output_error; + } } + DISPLAYLEVEL(3, "OK \n"); + + if ((int)(compressibility * 100 + 0.1) == FUZ_compressibility_default) { /* test only valid with known input */ + size_t const flatdictSize = 22 KB; + size_t const contentSize = 9 KB; + const void* const dict = (const char*)CNBuffer; + const void* const contentStart = (const char*)dict + flatdictSize; + size_t const target_nodict_cSize[22+1] = { 3840, 3770, 3870, 3830, 3770, + 3770, 3770, 3770, 3750, 3750, + 3740, 3670, 3670, 3660, 3660, + 3660, 3660, 3660, 3660, 3660, + 3660, 3660, 3660 }; + size_t const target_wdict_cSize[22+1] = { 2830, 2890, 2890, 2820, 2940, + 2950, 2950, 2920, 2900, 2890, + 2910, 2910, 2910, 2770, 2760, + 2750, 2750, 2750, 2750, 2750, + 2750, 2750, 2750 }; + int l = 1; + int const maxLevel = ZSTD_maxCLevel(); + + DISPLAYLEVEL(3, "test%3i : flat-dictionary efficiency test : \n", testNb++); + assert(maxLevel == 22); + RDG_genBuffer(CNBuffer, flatdictSize + contentSize, compressibility, 0., seed); + DISPLAYLEVEL(4, "content hash : %016llx; dict hash : %016llx \n", XXH64(contentStart, contentSize, 0), XXH64(dict, flatdictSize, 0)); + + for ( ; l <= maxLevel; l++) { + size_t const nodict_cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, + contentStart, contentSize, l); + if (nodict_cSize > target_nodict_cSize[l]) { + DISPLAYLEVEL(1, "error : compression at level %i worse than expected (%u > %u) \n", + l, (unsigned)nodict_cSize, (unsigned)target_nodict_cSize[l]); + goto _output_error; + } + DISPLAYLEVEL(4, "level %i : max expected %u >= reached %u \n", + l, (unsigned)target_nodict_cSize[l], (unsigned)nodict_cSize); + } + for ( l=1 ; l <= maxLevel; l++) { + size_t const wdict_cSize = ZSTD_compress_usingDict(ctxOrig, + compressedBuffer, compressedBufferSize, + contentStart, contentSize, + dict, flatdictSize, + l); + if (wdict_cSize > target_wdict_cSize[l]) { + DISPLAYLEVEL(1, "error : compression with dictionary at level %i worse than expected (%u > %u) \n", + l, (unsigned)wdict_cSize, (unsigned)target_wdict_cSize[l]); + goto _output_error; + } + DISPLAYLEVEL(4, "level %i with dictionary : max expected %u >= reached %u \n", + l, (unsigned)target_wdict_cSize[l], (unsigned)wdict_cSize); + } + + DISPLAYLEVEL(4, "compression efficiency tests OK \n"); + } + + ZSTD_freeCCtx(ctxOrig); + ZSTD_freeCCtx(ctxDuplicated); + ZSTD_freeDCtx(dctx); + } + + /* Dictionary and dictBuilder tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const dictBufferCapacity = 16 KB; + void* const dictBuffer = malloc(dictBufferCapacity); + 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)); + size_t dictSize; + U32 dictID; + size_t dictHeaderSize; + + if (dictBuffer==NULL || samplesSizes==NULL) { + free(dictBuffer); + free(samplesSizes); + goto _output_error; + } + + DISPLAYLEVEL(3, "test%3i : dictBuilder on cyclic data : ", testNb++); + assert(compressedBufferSize >= totalSampleSize); + { U32 u; for (u=0; u<totalSampleSize; u++) ((BYTE*)decodedBuffer)[u] = (BYTE)u; } + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + { size_t const sDictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity, + decodedBuffer, samplesSizes, nbSamples); + if (ZDICT_isError(sDictSize)) goto _output_error; + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)sDictSize); + } + + DISPLAYLEVEL(3, "test%3i : dictBuilder : ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + dictSize = ZDICT_trainFromBuffer(dictBuffer, dictBufferCapacity, + CNBuffer, samplesSizes, nbSamples); + if (ZDICT_isError(dictSize)) goto _output_error; + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : Multithreaded COVER dictBuilder : ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + { ZDICT_cover_params_t coverParams; + memset(&coverParams, 0, sizeof(coverParams)); + coverParams.steps = 8; + coverParams.nbThreads = 4; + dictSize = ZDICT_optimizeTrainFromBuffer_cover( + dictBuffer, dictBufferCapacity, + CNBuffer, samplesSizes, nbSamples/8, /* less samples for faster tests */ + &coverParams); + if (ZDICT_isError(dictSize)) goto _output_error; + } + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : COVER dictBuilder with shrinkDict: ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + { ZDICT_cover_params_t coverParams; + memset(&coverParams, 0, sizeof(coverParams)); + coverParams.steps = 8; + coverParams.nbThreads = 4; + coverParams.shrinkDict = 1; + coverParams.shrinkDictMaxRegression = 1; + dictSize = ZDICT_optimizeTrainFromBuffer_cover( + dictBuffer, dictBufferCapacity, + CNBuffer, samplesSizes, nbSamples/8, /* less samples for faster tests */ + &coverParams); + if (ZDICT_isError(dictSize)) goto _output_error; + } + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : Multithreaded FASTCOVER dictBuilder : ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + { ZDICT_fastCover_params_t fastCoverParams; + memset(&fastCoverParams, 0, sizeof(fastCoverParams)); + fastCoverParams.steps = 8; + fastCoverParams.nbThreads = 4; + dictSize = ZDICT_optimizeTrainFromBuffer_fastCover( + dictBuffer, dictBufferCapacity, + CNBuffer, samplesSizes, nbSamples, + &fastCoverParams); + if (ZDICT_isError(dictSize)) goto _output_error; + } + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : FASTCOVER dictBuilder with shrinkDict: ", testNb++); + { U32 u; for (u=0; u<nbSamples; u++) samplesSizes[u] = sampleUnitSize; } + { ZDICT_fastCover_params_t fastCoverParams; + memset(&fastCoverParams, 0, sizeof(fastCoverParams)); + fastCoverParams.steps = 8; + fastCoverParams.nbThreads = 4; + fastCoverParams.shrinkDict = 1; + fastCoverParams.shrinkDictMaxRegression = 1; + dictSize = ZDICT_optimizeTrainFromBuffer_fastCover( + dictBuffer, dictBufferCapacity, + CNBuffer, samplesSizes, nbSamples, + &fastCoverParams); + if (ZDICT_isError(dictSize)) goto _output_error; + } + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, dictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID); + + DISPLAYLEVEL(3, "test%3i : check dict header size no error : ", testNb++); + dictHeaderSize = ZDICT_getDictHeaderSize(dictBuffer, dictSize); + if (dictHeaderSize==0) goto _output_error; + DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictHeaderSize); + + DISPLAYLEVEL(3, "test%3i : check dict header size correctness : ", testNb++); + { unsigned char const dictBufferFixed[144] = { 0x37, 0xa4, 0x30, 0xec, 0x63, 0x00, 0x00, 0x00, 0x08, 0x10, 0x00, 0x1f, + 0x0f, 0x00, 0x28, 0xe5, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x80, 0x0f, 0x9e, 0x0f, 0x00, 0x00, 0x24, 0x40, 0x80, 0x00, 0x01, + 0x02, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0xde, 0x08, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, + 0x08, 0x08, 0x08, 0x08, 0xbc, 0xe1, 0x4b, 0x92, 0x0e, 0xb4, 0x7b, 0x18, + 0x86, 0x61, 0x18, 0xc6, 0x18, 0x63, 0x8c, 0x31, 0xc6, 0x18, 0x63, 0x8c, + 0x31, 0x66, 0x66, 0x66, 0x66, 0xb6, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x04, + 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x20, 0x73, 0x6f, 0x64, 0x61, + 0x6c, 0x65, 0x73, 0x20, 0x74, 0x6f, 0x72, 0x74, 0x6f, 0x72, 0x20, 0x65, + 0x6c, 0x65, 0x69, 0x66, 0x65, 0x6e, 0x64, 0x2e, 0x20, 0x41, 0x6c, 0x69 }; + dictHeaderSize = ZDICT_getDictHeaderSize(dictBufferFixed, 144); + if (dictHeaderSize != 115) goto _output_error; + } + DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictHeaderSize); + + DISPLAYLEVEL(3, "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(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK : %u \n", (unsigned)estimatedSize); + } + + DISPLAYLEVEL(3, "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_dct_auto, + cParams, ZSTD_defaultCMem); + assert(cdict != NULL); + DISPLAYLEVEL(3, "(size : %u) : ", (unsigned)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(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : frame built with dictionary should be decompressible : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress with static CDict : ", testNb++); + { int const maxLevel = ZSTD_maxCLevel(); + int level; + for (level = 1; level <= maxLevel; ++level) { + ZSTD_compressionParameters const cParams = ZSTD_getCParams(level, 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; + { const ZSTD_CDict* const cdict = ZSTD_initStaticCDict( + cdictBuffer, cdictSize, + dictBuffer, dictSize, + ZSTD_dlm_byCopy, ZSTD_dct_auto, + cParams); + if (cdict == NULL) { + DISPLAY("ZSTD_initStaticCDict failed "); + goto _output_error; + } + cSize = ZSTD_compress_usingCDict(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, MIN(10 KB, CNBuffSize), cdict); + if (ZSTD_isError(cSize)) { + DISPLAY("ZSTD_compress_usingCDict failed "); + goto _output_error; + } } + free(cdictBuffer); + } } + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "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_dct_auto, cParams, ZSTD_defaultCMem); + assert(cdict != NULL); + cSize = ZSTD_compress_usingCDict_advanced(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, CNBuffSize, + cdict, fParams); + ZSTD_freeCDict(cdict); + if (ZSTD_isError(cSize)) goto _output_error; + } + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "test%3i : try retrieving contentSize from frame : ", testNb++); + { U64 const contentSize = ZSTD_getFrameContentSize(compressedBuffer, cSize); + if (contentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error; + } + DISPLAYLEVEL(3, "OK (unknown)\n"); + + DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + assert(dctx != NULL); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100); + + DISPLAYLEVEL(3, "test%3i : frame built without dictID should be decompressible : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL); + CHECKPLUS(r, ZSTD_decompress_usingDict(dctx, + decodedBuffer, CNBuffSize, + compressedBuffer, cSize, + dictBuffer, dictSize), + if (r != CNBuffSize) goto _output_error); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : dictionary containing only header should return error : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + assert(dctx != NULL); + { 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; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dct_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_dct_fullDict, cParams, ZSTD_defaultCMem); + if (cdict==NULL) goto _output_error; + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Building cdict w/ ZSTD_dct_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_dct_fullDict, cParams, ZSTD_defaultCMem); + if (cdict!=NULL) goto _output_error; + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dct_auto should fail : ", testNb++); + { + size_t ret; + MEM_writeLE32((char*)dictBuffer+2, ZSTD_MAGIC_DICTIONARY); + /* Either operation is allowed to fail, but one must fail. */ + ret = ZSTD_CCtx_loadDictionary_advanced( + cctx, (const char*)dictBuffer+2, dictSize-2, ZSTD_dlm_byRef, ZSTD_dct_auto); + if (!ZSTD_isError(ret)) { + ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)); + if (!ZSTD_isError(ret)) goto _output_error; + } + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading rawContent starting with dict header w/ ZSTD_dct_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_dct_rawContent); + if (ZSTD_isError(ret)) goto _output_error; + ret = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)); + if (ZSTD_isError(ret)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_CCtx_refCDict() then set parameters : ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 1); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 )); + CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 1) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_hashLog, 12 )); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading dictionary before setting parameters is the same as loading after : ", testNb++); + { + size_t size1, size2; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) ); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) ); + size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size1)) goto _output_error; + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) ); + CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 7) ); + size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size2)) goto _output_error; + + if (size1 != size2) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the prefix : ", testNb++); + { + CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a dictionary clears the cdict : ", testNb++); + { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1); + CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) ); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the prefix : ", testNb++); + { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1); + CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a cdict clears the dictionary : ", testNb++); + { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the dictionary : ", testNb++); + { + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loading a prefix clears the cdict : ", testNb++); + { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictBuffer, dictSize, 1); + CHECK_Z( ZSTD_CCtx_refCDict(cctx, cdict) ); + CHECK_Z( ZSTD_CCtx_refPrefix(cctx, (const char*)dictBuffer, dictSize) ); + CHECK_Z( ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100)) ); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loaded dictionary persists across reset session : ", testNb++); + { + size_t size1, size2; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) ); + size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size1)) goto _output_error; + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_only); + size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size2)) goto _output_error; + + if (size1 != size2) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Loaded dictionary is cleared after resetting parameters : ", testNb++); + { + size_t size1, size2; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, CNBuffer, MIN(CNBuffSize, 10 KB)) ); + size1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size1)) goto _output_error; + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + size2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + if (ZSTD_isError(size2)) goto _output_error; + + if (size1 == size2) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(cctx, dictBuffer, dictSize) ); + cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBuffSize, 100 KB)); + CHECK_Z(cSize); + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + size_t ret; + /* We should fail to decompress without a dictionary. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + /* We should succeed to decompress with the dictionary. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictBuffer, dictSize) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + /* The dictionary should presist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + /* When we reset the context the dictionary is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with ddict : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + ZSTD_DDict* ddict = ZSTD_createDDict(dictBuffer, dictSize); + size_t ret; + /* We should succeed to decompress with the ddict. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + /* The ddict should presist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + /* When we reset the context the ddict is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + ZSTD_freeDCtx(dctx); + ZSTD_freeDDict(ddict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressDCtx() with prefix : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + size_t ret; + /* We should succeed to decompress with the prefix. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refPrefix_advanced(dctx, dictBuffer, dictSize, ZSTD_dct_auto) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + /* The prefix should be cleared after the first compression. */ + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Dictionary with non-default repcodes : ", 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; + /* Set all the repcodes to non-default */ + { + BYTE* dictPtr = (BYTE*)dictBuffer; + BYTE* dictLimit = dictPtr + dictSize - 12; + /* Find the repcodes */ + while (dictPtr < dictLimit && + (MEM_readLE32(dictPtr) != 1 || MEM_readLE32(dictPtr + 4) != 4 || + MEM_readLE32(dictPtr + 8) != 8)) { + ++dictPtr; + } + if (dictPtr >= dictLimit) goto _output_error; + MEM_writeLE32(dictPtr + 0, 10); + MEM_writeLE32(dictPtr + 4, 10); + MEM_writeLE32(dictPtr + 8, 10); + /* Set the last 8 bytes to 'x' */ + memset((BYTE*)dictBuffer + dictSize - 8, 'x', 8); + } + /* The optimal parser checks all the repcodes. + * Make sure at least one is a match >= targetLength so that it is + * immediately chosen. This will make sure that the compressor and + * decompressor agree on at least one of the repcodes. + */ + { size_t dSize; + BYTE data[1024]; + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + ZSTD_compressionParameters const cParams = ZSTD_getCParams(19, CNBuffSize, dictSize); + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictBuffer, dictSize, + ZSTD_dlm_byRef, ZSTD_dct_auto, + cParams, ZSTD_defaultCMem); + assert(dctx != NULL); assert(cdict != NULL); + memset(data, 'x', sizeof(data)); + cSize = ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, + data, sizeof(data), cdict); + ZSTD_freeCDict(cdict); + if (ZSTD_isError(cSize)) { DISPLAYLEVEL(5, "Compression error %s : ", ZSTD_getErrorName(cSize)); goto _output_error; } + dSize = ZSTD_decompress_usingDict(dctx, decodedBuffer, sizeof(data), compressedBuffer, cSize, dictBuffer, dictSize); + if (ZSTD_isError(dSize)) { DISPLAYLEVEL(5, "Decompression error %s : ", ZSTD_getErrorName(dSize)); goto _output_error; } + if (memcmp(data, decodedBuffer, sizeof(data))) { DISPLAYLEVEL(5, "Data corruption : "); goto _output_error; } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "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)); + U32 seed32 = seed; + ZDICT_cover_params_t params; + U32 dictID; + + if (dictBuffer==NULL || samplesSizes==NULL) { + free(dictBuffer); + free(samplesSizes); + goto _output_error; + } + + DISPLAYLEVEL(3, "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(&seed32) % 16); + params.k = params.d + (FUZ_rand(&seed32) % 256); + dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, dictSize, + CNBuffer, samplesSizes, nbSamples, + params); + if (ZDICT_isError(dictSize)) goto _output_error; + DISPLAYLEVEL(3, "OK, created dictionary of size %u \n", (unsigned)dictSize); + + DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, dictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID); + + DISPLAYLEVEL(3, "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(3, "OK, created dictionary of size %u \n", (unsigned)optDictSize); + + DISPLAYLEVEL(3, "test%3i : check dictID : ", testNb++); + dictID = ZDICT_getDictID(dictBuffer, optDictSize); + if (dictID==0) goto _output_error; + DISPLAYLEVEL(3, "OK : %u \n", (unsigned)dictID); + + ZSTD_freeCCtx(cctx); + free(dictBuffer); + free(samplesSizes); + } + + /* Decompression defense tests */ + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "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(3, "OK \n"); + + /* content size verification test */ + DISPLAYLEVEL(3, "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(3, "OK : %s \n", ZSTD_getErrorName(result)); + } + ZSTD_freeCCtx(cctx); + } + + /* negative compression level test : ensure simple API and advanced API produce same result */ + DISPLAYLEVEL(3, "test%3i : negative compression level : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const srcSize = CNBuffSize / 5; + int const compressionLevel = -1; + + assert(cctx != NULL); + { ZSTD_parameters const params = ZSTD_getParams(compressionLevel, srcSize, 0); + size_t const cSize_1pass = ZSTD_compress_advanced(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, srcSize, + NULL, 0, + params); + if (ZSTD_isError(cSize_1pass)) goto _output_error; + + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) ); + { size_t const compressionResult = ZSTD_compress2(cctx, + compressedBuffer, compressedBufferSize, + CNBuffer, srcSize); + DISPLAYLEVEL(5, "simple=%zu vs %zu=advanced : ", cSize_1pass, compressionResult); + if (ZSTD_isError(compressionResult)) goto _output_error; + if (compressionResult != cSize_1pass) goto _output_error; + } } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + /* parameters order test */ + { size_t const inputSize = CNBuffSize / 2; + U64 xxh64; + + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + DISPLAYLEVEL(3, "test%3i : parameters in order : ", testNb++); + assert(cctx != NULL); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) ); + { size_t const compressedSize = ZSTD_compress2(cctx, + compressedBuffer, ZSTD_compressBound(inputSize), + CNBuffer, inputSize); + CHECK(compressedSize); + cSize = compressedSize; + xxh64 = XXH64(compressedBuffer, compressedSize, 0); + } + DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize); + ZSTD_freeCCtx(cctx); + } + + { ZSTD_CCtx* cctx = ZSTD_createCCtx(); + DISPLAYLEVEL(3, "test%3i : parameters disordered : ", testNb++); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 18) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1) ); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, 2) ); + { size_t const result = ZSTD_compress2(cctx, + compressedBuffer, ZSTD_compressBound(inputSize), + CNBuffer, inputSize); + CHECK(result); + if (result != cSize) goto _output_error; /* must result in same compressed result, hence same size */ + if (XXH64(compressedBuffer, result, 0) != xxh64) goto _output_error; /* must result in exactly same content, hence same hash */ + DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)result); + } + ZSTD_freeCCtx(cctx); + } + } + + /* advanced parameters for decompression */ + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + assert(dctx != NULL); + + DISPLAYLEVEL(3, "test%3i : get dParameter bounds ", testNb++); + { ZSTD_bounds const bounds = ZSTD_dParam_getBounds(ZSTD_d_windowLogMax); + CHECK(bounds.error); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : wrong dParameter : ", testNb++); + { size_t const sr = ZSTD_DCtx_setParameter(dctx, (ZSTD_dParameter)999999, 0); + if (!ZSTD_isError(sr)) goto _output_error; + } + { ZSTD_bounds const bounds = ZSTD_dParam_getBounds((ZSTD_dParameter)999998); + if (!ZSTD_isError(bounds.error)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : out of bound dParameter : ", testNb++); + { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_windowLogMax, 9999); + if (!ZSTD_isError(sr)) goto _output_error; + } + { size_t const sr = ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, (ZSTD_format_e)888); + if (!ZSTD_isError(sr)) goto _output_error; + } + DISPLAYLEVEL(3, "OK \n"); + + ZSTD_freeDCtx(dctx); + } + + + /* custom formats tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + size_t const inputSize = CNBuffSize / 2; /* won't cause pb with small dict size */ + assert(dctx != NULL); assert(cctx != NULL); + + /* basic block compression */ + DISPLAYLEVEL(3, "test%3i : magic-less format test : ", testNb++); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) ); + { ZSTD_inBuffer in = { CNBuffer, inputSize, 0 }; + ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(inputSize), 0 }; + size_t const result = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end); + if (result != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + cSize = out.pos; + } + DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)inputSize, (unsigned)cSize); + + DISPLAYLEVEL(3, "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(3, "OK : %s \n", ZSTD_getErrorName(decodeResult)); + } + + DISPLAYLEVEL(3, "test%3i : decompress of magic-less frame : ", testNb++); + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK( ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, ZSTD_f_zstd1_magicless) ); + { ZSTD_frameHeader zfh; + size_t const zfhrt = ZSTD_getFrameHeader_advanced(&zfh, compressedBuffer, cSize, ZSTD_f_zstd1_magicless); + if (zfhrt != 0) goto _output_error; + } + /* one shot */ + { size_t const result = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (result != inputSize) goto _output_error; + DISPLAYLEVEL(3, "one-shot OK, "); + } + /* streaming */ + { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 }; + ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 }; + size_t const result = ZSTD_decompressStream(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(3, "streaming OK : regenerated %u bytes \n", (unsigned)out.pos); + } + + /* basic block compression */ + DISPLAYLEVEL(3, "test%3i : empty magic-less format test : ", testNb++); + CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) ); + { ZSTD_inBuffer in = { CNBuffer, 0, 0 }; + ZSTD_outBuffer out = { compressedBuffer, ZSTD_compressBound(0), 0 }; + size_t const result = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end); + if (result != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + cSize = out.pos; + } + DISPLAYLEVEL(3, "OK (compress : %u -> %u bytes)\n", (unsigned)0, (unsigned)cSize); + + DISPLAYLEVEL(3, "test%3i : decompress of empty magic-less frame : ", testNb++); + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK( ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, ZSTD_f_zstd1_magicless) ); + /* one shot */ + { size_t const result = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize); + if (result != 0) goto _output_error; + DISPLAYLEVEL(3, "one-shot OK, "); + } + /* streaming */ + { ZSTD_inBuffer in = { compressedBuffer, cSize, 0 }; + ZSTD_outBuffer out = { decodedBuffer, CNBuffSize, 0 }; + size_t const result = ZSTD_decompressStream(dctx, &out, &in); + if (result != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + if (out.pos != 0) goto _output_error; + DISPLAYLEVEL(3, "streaming OK : regenerated %u bytes \n", (unsigned)out.pos); + } + + ZSTD_freeCCtx(cctx); + ZSTD_freeDCtx(dctx); + } + + /* block API tests */ + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + 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; + assert(cctx != NULL); assert(dctx != NULL); + + /* basic block compression */ + DISPLAYLEVEL(3, "test%3i : Block compression test : ", testNb++); + CHECK( ZSTD_compressBegin(cctx, 5) ); + CHECK( ZSTD_getBlockSize(cctx) >= blockSize); + CHECK_VAR(cSize, ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize) ); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Block decompression test : ", testNb++); + CHECK( ZSTD_decompressBegin(dctx) ); + { CHECK_NEWV(r, ZSTD_decompressBlock(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) ); + if (r != blockSize) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + /* very long stream of block compression */ + DISPLAYLEVEL(3, "test%3i : Huge block streaming compression test : ", testNb++); + CHECK( ZSTD_compressBegin(cctx, -199) ); /* we just want to quickly overflow internal U32 index */ + CHECK( ZSTD_getBlockSize(cctx) >= blockSize); + { U64 const toCompress = 5000000000ULL; /* > 4 GB */ + U64 compressed = 0; + while (compressed < toCompress) { + size_t const blockCSize = ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), CNBuffer, blockSize); + assert(blockCSize != 0); + if (ZSTD_isError(blockCSize)) goto _output_error; + compressed += blockCSize; + } } + DISPLAYLEVEL(3, "OK \n"); + + /* dictionary block compression */ + DISPLAYLEVEL(3, "test%3i : Dictionary Block compression test : ", testNb++); + CHECK( ZSTD_compressBegin_usingDict(cctx, CNBuffer, dictSize, 5) ); + CHECK_VAR(cSize, ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize)); + RDG_genBuffer((char*)CNBuffer+dictSize+blockSize, blockSize, 0.0, 0.0, seed); /* create a non-compressible second block */ + { CHECK_NEWV(r, ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize+blockSize, blockSize) ); /* for cctx history consistency */ + assert(r == 0); /* non-compressible block */ } + memcpy((char*)compressedBuffer+cSize, (char*)CNBuffer+dictSize+blockSize, blockSize); /* send non-compressed block (without header) */ + CHECK_VAR(cSize2, ZSTD_compressBlock(cctx, (char*)compressedBuffer+cSize+blockSize, ZSTD_compressBound(blockSize), + (char*)CNBuffer+dictSize+2*blockSize, blockSize)); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Dictionary Block decompression test : ", testNb++); + CHECK( ZSTD_decompressBegin_usingDict(dctx, CNBuffer, dictSize) ); + { CHECK_NEWV( r, ZSTD_decompressBlock(dctx, decodedBuffer, blockSize, compressedBuffer, cSize) ); + if (r != blockSize) { + DISPLAYLEVEL(1, "ZSTD_decompressBlock() with _usingDict() fails : %u, instead of %u expected \n", (unsigned)r, (unsigned)blockSize); + goto _output_error; + } } + memcpy((char*)decodedBuffer+blockSize, (char*)compressedBuffer+cSize, blockSize); + ZSTD_insertBlock(dctx, (char*)decodedBuffer+blockSize, blockSize); /* insert non-compressed block into dctx history */ + { CHECK_NEWV( r, ZSTD_decompressBlock(dctx, (char*)decodedBuffer+2*blockSize, blockSize, (char*)compressedBuffer+cSize+blockSize, cSize2) ); + if (r != blockSize) { + DISPLAYLEVEL(1, "ZSTD_decompressBlock() with _usingDict() and after insertBlock() fails : %u, instead of %u expected \n", (unsigned)r, (unsigned)blockSize); + goto _output_error; + } } + assert(memcpy((char*)CNBuffer+dictSize, decodedBuffer, blockSize*3)); /* ensure regenerated content is identical to origin */ + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : Block compression with CDict : ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, dictSize, 3); + if (cdict==NULL) goto _output_error; + CHECK( ZSTD_compressBegin_usingCDict(cctx, cdict) ); + CHECK( ZSTD_compressBlock(cctx, compressedBuffer, ZSTD_compressBound(blockSize), (char*)CNBuffer+dictSize, blockSize) ); + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + + ZSTD_freeCCtx(cctx); + ZSTD_freeDCtx(dctx); + } + + /* long rle test */ + { size_t sampleSize = 0; + size_t expectedCompressedSize = 39; /* block 1, 2: compressed, block 3: RLE, zstd 1.4.4 */ + DISPLAYLEVEL(3, "test%3i : Long RLE test : ", testNb++); + memset((char*)CNBuffer+sampleSize, 'B', 256 KB - 1); + sampleSize += 256 KB - 1; + memset((char*)CNBuffer+sampleSize, 'A', 96 KB); + sampleSize += 96 KB; + cSize = ZSTD_compress(compressedBuffer, ZSTD_compressBound(sampleSize), CNBuffer, sampleSize, 1); + if (ZSTD_isError(cSize) || cSize > expectedCompressedSize) goto _output_error; + { CHECK_NEWV(regenSize, ZSTD_decompress(decodedBuffer, sampleSize, compressedBuffer, cSize)); + if (regenSize!=sampleSize) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + } + + DISPLAYLEVEL(3, "test%3i : ZSTD_getSequences decode from sequences test : ", testNb++); + { + size_t srcSize = 100 KB; + BYTE* src = (BYTE*)CNBuffer; + BYTE* decoded = (BYTE*)compressedBuffer; + + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + ZSTD_Sequence* seqs = (ZSTD_Sequence*)malloc(srcSize * sizeof(ZSTD_Sequence)); + size_t seqsSize; + + if (seqs == NULL) goto _output_error; + assert(cctx != NULL); + + /* Populate src with random data */ + RDG_genBuffer(CNBuffer, srcSize, compressibility, 0., seed); + + /* get the sequences */ + seqsSize = ZSTD_getSequences(cctx, seqs, srcSize, src, srcSize); + + /* "decode" and compare the sequences */ + FUZ_decodeSequences(decoded, seqs, seqsSize, src, srcSize); + assert(!memcmp(CNBuffer, compressedBuffer, srcSize)); + + ZSTD_freeCCtx(cctx); + free(seqs); + } + + /* Multiple blocks of zeros test */ + #define LONGZEROSLENGTH 1000000 /* 1MB of zeros */ + DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, LONGZEROSLENGTH); + memset(CNBuffer, 0, LONGZEROSLENGTH); + CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(LONGZEROSLENGTH), CNBuffer, LONGZEROSLENGTH, 1) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/LONGZEROSLENGTH*100); + + DISPLAYLEVEL(3, "test%3i : decompress %u zeroes : ", testNb++, LONGZEROSLENGTH); + { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, LONGZEROSLENGTH, compressedBuffer, cSize) ); + if (r != LONGZEROSLENGTH) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + /* All zeroes test (test bug #137) */ + #define ZEROESLENGTH 100 + DISPLAYLEVEL(3, "test%3i : compress %u zeroes : ", testNb++, ZEROESLENGTH); + memset(CNBuffer, 0, ZEROESLENGTH); + CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(ZEROESLENGTH), CNBuffer, ZEROESLENGTH, 1) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/ZEROESLENGTH*100); + + DISPLAYLEVEL(3, "test%3i : decompress %u zeroes : ", testNb++, ZEROESLENGTH); + { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, ZEROESLENGTH, compressedBuffer, cSize) ); + if (r != ZEROESLENGTH) goto _output_error; } + DISPLAYLEVEL(3, "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(3, "test%3i : growing nbSeq : ", testNb++); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const maxNbSeq = _3BYTESTESTLENGTH / 3; + size_t const bound = ZSTD_compressBound(_3BYTESTESTLENGTH); + size_t nbSeq = 1; + while (nbSeq <= maxNbSeq) { + CHECK(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, nbSeq * 3, 19)); + /* Check every sequence for the first 100, then skip more rapidly. */ + if (nbSeq < 100) { + ++nbSeq; + } else { + nbSeq += (nbSeq >> 2); + } + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : compress lots 3-bytes sequences : ", testNb++); + CHECK_VAR(cSize, ZSTD_compress(compressedBuffer, ZSTD_compressBound(_3BYTESTESTLENGTH), + CNBuffer, _3BYTESTESTLENGTH, 19) ); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/_3BYTESTESTLENGTH*100); + + DISPLAYLEVEL(3, "test%3i : decompress lots 3-bytes sequence : ", testNb++); + { CHECK_NEWV(r, ZSTD_decompress(decodedBuffer, _3BYTESTESTLENGTH, compressedBuffer, cSize) ); + if (r != _3BYTESTESTLENGTH) goto _output_error; } + DISPLAYLEVEL(3, "OK \n"); + + + DISPLAYLEVEL(3, "test%3i : growing literals buffer : ", testNb++); + RDG_genBuffer(CNBuffer, CNBuffSize, 0.0, 0.1, seed); + { ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + size_t const bound = ZSTD_compressBound(CNBuffSize); + size_t size = 1; + while (size <= CNBuffSize) { + CHECK(ZSTD_compressCCtx(cctx, compressedBuffer, bound, CNBuffer, size, 3)); + /* Check every size for the first 100, then skip more rapidly. */ + if (size < 100) { + ++size; + } else { + size += (size >> 2); + } + } + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : incompressible data and ill suited dictionary : ", testNb++); + { /* 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(3, "OK \n"); + + + /* findFrameCompressedSize on skippable frames */ + DISPLAYLEVEL(3, "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(3, "OK \n"); + + /* error string tests */ + DISPLAYLEVEL(3, "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(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : testing ZSTD dictionary sizes : ", testNb++); + RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed); + { + size_t const size = MIN(128 KB, CNBuffSize); + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_CDict* const lgCDict = ZSTD_createCDict(CNBuffer, size, 1); + ZSTD_CDict* const smCDict = ZSTD_createCDict(CNBuffer, 1 KB, 1); + ZSTD_frameHeader lgHeader; + ZSTD_frameHeader smHeader; + + CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, lgCDict)); + CHECK_Z(ZSTD_getFrameHeader(&lgHeader, compressedBuffer, compressedBufferSize)); + CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, CNBuffer, size, smCDict)); + CHECK_Z(ZSTD_getFrameHeader(&smHeader, compressedBuffer, compressedBufferSize)); + + if (lgHeader.windowSize != smHeader.windowSize) goto _output_error; + + ZSTD_freeCDict(smCDict); + ZSTD_freeCDict(lgCDict); + ZSTD_freeCCtx(cctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : testing FSE_normalizeCount() PR#1255: ", testNb++); + { + short norm[32]; + unsigned count[32]; + unsigned const tableLog = 5; + size_t const nbSeq = 32; + unsigned const maxSymbolValue = 31; + size_t i; + + for (i = 0; i < 32; ++i) + count[i] = 1; + /* Calling FSE_normalizeCount() on a uniform distribution should not + * cause a division by zero. + */ + FSE_normalizeCount(norm, tableLog, count, nbSeq, maxSymbolValue); + } + DISPLAYLEVEL(3, "OK \n"); +#ifdef ZSTD_MULTITHREAD + DISPLAYLEVEL(3, "test%3i : passing wrong full dict should fail on compressStream2 refPrefix ", testNb++); + { + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + /* A little more than ZSTDMT_JOBSIZE_MIN */ + size_t const srcSize = 1 MB + 5; + size_t const dstSize = ZSTD_compressBound(srcSize); + void* const src = CNBuffer; + void* const dst = compressedBuffer; + void* dict = (void*)malloc(srcSize); + + RDG_genBuffer(src, srcSize, compressibility, 0.5, seed); + RDG_genBuffer(dict, srcSize, compressibility, 0., seed); + + /* Make sure there is no ZSTD_MAGIC_NUMBER */ + memset(dict, 0, sizeof(U32)); + + /* something more than 1 */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2)); + /* lie and claim this is a full dict */ + CHECK_Z(ZSTD_CCtx_refPrefix_advanced(cctx, dict, srcSize, ZSTD_dct_fullDict)); + + { + ZSTD_outBuffer out = {dst, dstSize, 0}; + ZSTD_inBuffer in = {src, srcSize, 0}; + + /* should fail because its not a full dict like we said it was */ + assert(ZSTD_isError(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush))); + } + + ZSTD_freeCCtx(cctx); + free(dict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : small dictionary with multithreading and LDM ", testNb++); + { + ZSTD_CCtx* cctx = ZSTD_createCCtx(); + /* A little more than ZSTDMT_JOBSIZE_MIN */ + size_t const srcSize = 1 MB + 5; + size_t const dictSize = 10; + size_t const dstSize = ZSTD_compressBound(srcSize); + void* const src = CNBuffer; + void* const dst = compressedBuffer; + void* dict = (void*)malloc(dictSize); + + RDG_genBuffer(src, srcSize, compressibility, 0.5, seed); + RDG_genBuffer(dict, dictSize, compressibility, 0., seed); + + /* Make sure there is no ZSTD_MAGIC_NUMBER */ + memset(dict, 0, sizeof(U32)); + + /* Enable MT, LDM, and use refPrefix() for a small dict */ + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2)); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, 1)); + CHECK_Z(ZSTD_CCtx_refPrefix(cctx, dict, dictSize)); + + CHECK_Z(ZSTD_compress2(cctx, dst, dstSize, src, srcSize)); + + ZSTD_freeCCtx(cctx); + free(dict); + } + DISPLAYLEVEL(3, "OK \n"); +#endif + + /* note : this test is rather long, it would be great to find a way to speed up its execution */ + DISPLAYLEVEL(3, "test%3i : table cleanliness through index reduction : ", testNb++); + { + int cLevel; + size_t approxIndex = 0; + size_t maxIndex = ((3U << 29) + (1U << ZSTD_WINDOWLOG_MAX)); /* ZSTD_CURRENT_MAX from zstd_compress_internal.h */ + + /* Provision enough space in a static context so that we can do all + * this without ever reallocating, which would reset the indices. */ + size_t const staticCCtxSize = ZSTD_estimateCStreamSize(22); + void* const staticCCtxBuffer = malloc(staticCCtxSize); + ZSTD_CCtx* const cctx = ZSTD_initStaticCCtx(staticCCtxBuffer, staticCCtxSize); + + /* bump the indices so the following compressions happen at high + * indices. */ + { ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 }; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, -500)); + while (approxIndex <= (maxIndex / 4) * 3) { + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + approxIndex += in.pos; + CHECK(in.pos == in.size); + in.pos = 0; + out.pos = 0; + } + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + } + + /* spew a bunch of stuff into the table area */ + for (cLevel = 1; cLevel <= 22; cLevel++) { + ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize / (unsigned)cLevel, 0 }; + ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 }; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, cLevel)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + approxIndex += in.pos; + } + + /* now crank the indices so we overflow */ + { ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 }; + ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 }; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, -500)); + while (approxIndex <= maxIndex) { + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + approxIndex += in.pos; + CHECK(in.pos == in.size); + in.pos = 0; + out.pos = 0; + } + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + } + + /* do a bunch of compressions again in low indices and ensure we don't + * hit untracked invalid indices */ + for (cLevel = 1; cLevel <= 22; cLevel++) { + ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize / (unsigned)cLevel, 0 }; + ZSTD_inBuffer in = { CNBuffer, CNBuffSize, 0 }; + ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, cLevel)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush)); + CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end)); + approxIndex += in.pos; + } + + free(staticCCtxBuffer); + } + DISPLAYLEVEL(3, "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", (unsigned)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", (unsigned)seed, testNb); \ + goto _output_error; \ +} } + + +static int fuzzerTests(U32 seed, unsigned 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* 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; + unsigned testNb = 0; + U32 coreSeed = seed; + UTIL_time_t const startClock = UTIL_getTime(); + U64 const maxClockSpan = maxDurationS * SEC_TO_MICRO; + 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 */ + + /* catch up testNb */ + for (testNb=1; testNb < startTest; testNb++) FUZ_rand(&coreSeed); + + /* main test loop */ + for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < maxClockSpan); testNb++ ) { + BYTE* srcBuffer; /* jumping pointer */ + U32 lseed; + 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 */ + { int const cLevelPositive = (int) + ( FUZ_rand(&lseed) % + ((U32)ZSTD_maxCLevel() - (FUZ_highbit32((U32)sampleSize) / (U32)cLevelLimiter)) ) + + 1; + int const cLevel = ((FUZ_rand(&lseed) & 15) == 3) ? + - (int)((FUZ_rand(&lseed) & 7) + 1) : /* test negative cLevel */ + cLevelPositive; + DISPLAYLEVEL(5, "fuzzer t%u: Simple compression test (level %i) \n", testNb, cLevel); + 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 */ + assert(cSize > 3); + { const size_t missing = (FUZ_rand(&lseed) % (cSize-2)) + 1; + const size_t tooSmallSize = cSize - missing; + const unsigned endMark = 0x4DC2B1A9; + memcpy(dstBuffer+tooSmallSize, &endMark, sizeof(endMark)); + DISPLAYLEVEL(5, "fuzzer t%u: compress into too small buffer of size %u (missing %u bytes) \n", + testNb, (unsigned)tooSmallSize, (unsigned)missing); + { 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)", (unsigned)tooSmallSize, (unsigned)cSize); } + { unsigned endCheck; memcpy(&endCheck, dstBuffer+tooSmallSize, sizeof(endCheck)); + CHECK(endCheck != endMark, "ZSTD_compressCCtx : dst buffer overflow (check.%08X != %08X.mark)", endCheck, endMark); } + } } + + /* 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 */ + DISPLAYLEVEL(5, "fuzzer t%u: simple decompression test \n", testNb); + { 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), (unsigned)sampleSize, (unsigned)cSize); + { U64 const crcDest = XXH64(dstBuffer, sampleSize, 0); + CHECK(crcOrig != crcDest, "decompression result corrupted (pos %u / %u)", (unsigned)findDiff(sampleBuffer, dstBuffer, sampleSize), (unsigned)sampleSize); + } } + + free(sampleBuffer); /* no longer useful after this point */ + + /* truncated src decompression test */ + DISPLAYLEVEL(5, "fuzzer t%u: decompression of truncated source \n", testNb); + { 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 */ + DISPLAYLEVEL(5, "fuzzer t%u: decompress into too small dst buffer \n", testNb); + 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)", (unsigned)errorCode, (unsigned)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 */ + DISPLAYLEVEL(5, "fuzzer t%u: decompress noisy source \n", testNb); + { 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)", (unsigned)decompressResult, (unsigned)sampleSize); + } + { U32 endCheck; memcpy(&endCheck, dstBuffer+sampleSize, 4); + CHECK(endMark!=endCheck, "ZSTD_decompress on noisy src : dst buffer overflow"); + } } } /* noisy src decompression test */ + + /*===== Bufferless streaming compression test, scattered segments and dictionary =====*/ + DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming compression test \n", testNb); + { 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)); + + DISPLAYLEVEL(6, "fuzzer t%u: Compressing up to <=%u bytes at level %i with dictionary size %u \n", + testNb, (unsigned)maxTestSize, cLevel, (unsigned)dictSize); + + if (FUZ_rand(&lseed) & 0xF) { + CHECK_Z ( ZSTD_compressBegin_usingDict(refCtx, dict, dictSize, cLevel) ); + } else { + ZSTD_compressionParameters const cPar = ZSTD_getCParams(cLevel, ZSTD_CONTENTSIZE_UNKNOWN, 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 */ + DISPLAYLEVEL(5, "fuzzer t%u: Bufferless streaming decompression test \n", testNb); + /* 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)", + (unsigned)roundBuffSize, (unsigned)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); + CHECK(crcOrig != crcDest, "streaming decompressed data corrupted (pos %u / %u)", + (unsigned)findDiff(mirrorBuffer, dstBuffer, totalTestSize), (unsigned)totalTestSize); + } + } /* 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# : Number of tests (default:%i)\n", nbTestsDefault); + DISPLAY( " -T# : Max duration to run for. Overrides number of tests. (e.g. -T1m or -T60s for one minute)\n"); + DISPLAY( " -s# : Select seed (default:prompt user)\n"); + DISPLAY( " -t# : Select starting test number (default:0)\n"); + DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", FUZ_compressibility_default); + DISPLAY( " -v : verbose\n"); + DISPLAY( " -p : pause at the end\n"); + DISPLAY( " -h : display help and exit\n"); + return 0; +} + +/*! 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 int 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; + int 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++; + break; + + case 'q': + argument++; + g_displayLevel--; + break; + + case 'p': /* pause at the end */ + argument++; + mainPause = 1; + break; + + case 'i': + argument++; maxDuration = 0; + nbTests = (int)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 = (int)readU32FromChar(&argument); + break; + + case 'P': /* compressibility % */ + argument++; + proba = (int)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", (unsigned)seed); + if (proba!=FUZ_compressibility_default) DISPLAY("Compressibility : %i%%\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; +} |