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Diffstat (limited to '')
| -rw-r--r-- | src/zstd/tests/zstreamtest.c | 2654 |
1 files changed, 2654 insertions, 0 deletions
diff --git a/src/zstd/tests/zstreamtest.c b/src/zstd/tests/zstreamtest.c new file mode 100644 index 000000000..79d5a8281 --- /dev/null +++ b/src/zstd/tests/zstreamtest.c @@ -0,0 +1,2654 @@ +/* + * Copyright (c) 2016-2020, 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 : 4146) /* disable: C4146: minus unsigned expression */ +#endif + + +/*-************************************ + * Includes + **************************************/ +#include <stdlib.h> /* free */ +#include <stdio.h> /* fgets, sscanf */ +#include <string.h> /* strcmp */ +#include <assert.h> /* assert */ +#include "timefn.h" /* UTIL_time_t, UTIL_getTime */ +#include "mem.h" +#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem, ZSTD_getDictID_fromFrame */ +#include "zstd.h" /* ZSTD_compressBound */ +#include "zstd_errors.h" /* ZSTD_error_srcSize_wrong */ +#include "zstdmt_compress.h" +#include "zdict.h" /* ZDICT_trainFromBuffer */ +#include "datagen.h" /* RDG_genBuffer */ +#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */ +#include "xxhash.h" /* XXH64_* */ +#include "seqgen.h" +#include "util.h" +#include "timefn.h" /* UTIL_time_t, UTIL_clockSpanMicro, UTIL_getTime */ + + +/*-************************************ + * Constants + **************************************/ +#define KB *(1U<<10) +#define MB *(1U<<20) +#define GB *(1U<<30) + +static const int nbTestsDefault = 10000; +static const U32 g_cLevelMax_smallTests = 10; +#define COMPRESSIBLE_NOISE_LENGTH (10 MB) +#define FUZ_COMPRESSIBILITY_DEFAULT 50 +static const U32 prime32 = 2654435761U; + + +/*-************************************ + * Display Macros + **************************************/ +#define DISPLAY(...) fprintf(stderr, __VA_ARGS__) +#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { \ + DISPLAY(__VA_ARGS__); \ + if (g_displayLevel>=4) fflush(stderr); } +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); } } + +static U64 g_clockTime = 0; + + +/*-******************************************************* + * Check macros + *********************************************************/ +#undef MIN +#undef MAX +#define MIN(a,b) ((a)<(b)?(a):(b)) +#define MAX(a,b) ((a)>(b)?(a):(b)) +/*! FUZ_rand() : + @return : a 27 bits random value, from a 32-bits `seed`. + `seed` is also modified */ +#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r))) +static U32 FUZ_rand(U32* seedPtr) +{ + static const U32 prime2 = 2246822519U; + U32 rand32 = *seedPtr; + rand32 *= prime32; + rand32 += prime2; + rand32 = FUZ_rotl32(rand32, 13); + *seedPtr = rand32; + return rand32 >> 5; +} + +#define CHECK(cond, ...) { \ + if (cond) { \ + DISPLAY("Error => "); \ + DISPLAY(__VA_ARGS__); \ + DISPLAY(" (seed %u, test nb %u, line %u) \n", \ + (unsigned)seed, testNb, __LINE__); \ + goto _output_error; \ +} } + +#define CHECK_Z(f) { \ + size_t const err = f; \ + CHECK(ZSTD_isError(err), "%s : %s ", \ + #f, ZSTD_getErrorName(err)); \ +} + +#define CHECK_RET(ret, cond, ...) { \ + if (cond) { \ + DISPLAY("Error %llu => ", (unsigned long long)ret); \ + DISPLAY(__VA_ARGS__); \ + DISPLAY(" (line %u)\n", __LINE__); \ + return ret; \ +} } + +#define CHECK_RET_Z(f) { \ + size_t const err = f; \ + CHECK_RET(err, ZSTD_isError(err), "%s : %s ", \ + #f, ZSTD_getErrorName(err)); \ +} + + +/*====================================================== + * Basic Unit tests + *======================================================*/ + +typedef struct { + void* start; + size_t size; + size_t filled; +} buffer_t; + +static const buffer_t kBuffNull = { NULL, 0 , 0 }; + +static void FUZ_freeDictionary(buffer_t dict) +{ + free(dict.start); +} + +static buffer_t FUZ_createDictionary(const void* src, size_t srcSize, size_t blockSize, size_t requestedDictSize) +{ + buffer_t dict = kBuffNull; + size_t const nbBlocks = (srcSize + (blockSize-1)) / blockSize; + size_t* const blockSizes = (size_t*)malloc(nbBlocks * sizeof(size_t)); + if (!blockSizes) return kBuffNull; + dict.start = malloc(requestedDictSize); + if (!dict.start) { free(blockSizes); return kBuffNull; } + { size_t nb; + for (nb=0; nb<nbBlocks-1; nb++) blockSizes[nb] = blockSize; + blockSizes[nbBlocks-1] = srcSize - (blockSize * (nbBlocks-1)); + } + { size_t const dictSize = ZDICT_trainFromBuffer(dict.start, requestedDictSize, src, blockSizes, (unsigned)nbBlocks); + free(blockSizes); + if (ZDICT_isError(dictSize)) { FUZ_freeDictionary(dict); return kBuffNull; } + dict.size = requestedDictSize; + dict.filled = dictSize; + return dict; + } +} + +/* Round trips data and updates xxh with the decompressed data produced */ +static size_t SEQ_roundTrip(ZSTD_CCtx* cctx, ZSTD_DCtx* dctx, + XXH64_state_t* xxh, void* data, size_t size, + ZSTD_EndDirective endOp) +{ + static BYTE compressed[1024]; + static BYTE uncompressed[1024]; + + ZSTD_inBuffer cin = {data, size, 0}; + size_t cret; + + do { + ZSTD_outBuffer cout = { compressed, sizeof(compressed), 0 }; + ZSTD_inBuffer din = { compressed, 0, 0 }; + ZSTD_outBuffer dout = { uncompressed, 0, 0 }; + + cret = ZSTD_compressStream2(cctx, &cout, &cin, endOp); + if (ZSTD_isError(cret)) + return cret; + + din.size = cout.pos; + while (din.pos < din.size || (endOp == ZSTD_e_end && cret == 0)) { + size_t dret; + + dout.pos = 0; + dout.size = sizeof(uncompressed); + dret = ZSTD_decompressStream(dctx, &dout, &din); + if (ZSTD_isError(dret)) + return dret; + XXH64_update(xxh, dout.dst, dout.pos); + if (dret == 0) + break; + } + } while (cin.pos < cin.size || (endOp != ZSTD_e_continue && cret != 0)); + return 0; +} + +/* Generates some data and round trips it */ +static size_t SEQ_generateRoundTrip(ZSTD_CCtx* cctx, ZSTD_DCtx* dctx, + XXH64_state_t* xxh, SEQ_stream* seq, + SEQ_gen_type type, unsigned value) +{ + static BYTE data[1024]; + size_t gen; + + do { + SEQ_outBuffer sout = {data, sizeof(data), 0}; + size_t ret; + gen = SEQ_gen(seq, type, value, &sout); + + ret = SEQ_roundTrip(cctx, dctx, xxh, sout.dst, sout.pos, ZSTD_e_continue); + if (ZSTD_isError(ret)) + return ret; + } while (gen != 0); + + return 0; +} + +static size_t getCCtxParams(ZSTD_CCtx* zc, ZSTD_parameters* savedParams) +{ + int value; + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_windowLog, (int*)&savedParams->cParams.windowLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_hashLog, (int*)&savedParams->cParams.hashLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_chainLog, (int*)&savedParams->cParams.chainLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_searchLog, (int*)&savedParams->cParams.searchLog)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_minMatch, (int*)&savedParams->cParams.minMatch)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_targetLength, (int*)&savedParams->cParams.targetLength)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_strategy, &value)); + savedParams->cParams.strategy = value; + + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_checksumFlag, &savedParams->fParams.checksumFlag)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_contentSizeFlag, &savedParams->fParams.contentSizeFlag)); + CHECK_RET_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_dictIDFlag, &value)); + savedParams->fParams.noDictIDFlag = !value; + return 0; +} + +static U32 badParameters(ZSTD_CCtx* zc, ZSTD_parameters const savedParams) +{ + ZSTD_parameters params; + if (ZSTD_isError(getCCtxParams(zc, ¶ms))) return 10; + CHECK_RET(1, params.cParams.windowLog != savedParams.cParams.windowLog, "windowLog"); + CHECK_RET(2, params.cParams.hashLog != savedParams.cParams.hashLog, "hashLog"); + CHECK_RET(3, params.cParams.chainLog != savedParams.cParams.chainLog, "chainLog"); + CHECK_RET(4, params.cParams.searchLog != savedParams.cParams.searchLog, "searchLog"); + CHECK_RET(5, params.cParams.minMatch != savedParams.cParams.minMatch, "minMatch"); + CHECK_RET(6, params.cParams.targetLength != savedParams.cParams.targetLength, "targetLength"); + + CHECK_RET(7, params.fParams.checksumFlag != savedParams.fParams.checksumFlag, "checksumFlag"); + CHECK_RET(8, params.fParams.contentSizeFlag != savedParams.fParams.contentSizeFlag, "contentSizeFlag"); + CHECK_RET(9, params.fParams.noDictIDFlag != savedParams.fParams.noDictIDFlag, "noDictIDFlag"); + return 0; +} + +static int basicUnitTests(U32 seed, double compressibility) +{ + size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH; + void* CNBuffer = malloc(CNBufferSize); + size_t const skippableFrameSize = 200 KB; + size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH); + void* compressedBuffer = malloc(compressedBufferSize); + size_t const decodedBufferSize = CNBufferSize; + void* decodedBuffer = malloc(decodedBufferSize); + size_t cSize; + int testResult = 0; + int testNb = 1; + U32 coreSeed = 0; /* this name to conform with CHECK_Z macro display */ + ZSTD_CStream* zc = ZSTD_createCStream(); + ZSTD_DStream* zd = ZSTD_createDStream(); + ZSTDMT_CCtx* mtctx = ZSTDMT_createCCtx(2); + + ZSTD_inBuffer inBuff, inBuff2; + ZSTD_outBuffer outBuff; + buffer_t dictionary = kBuffNull; + size_t const dictSize = 128 KB; + unsigned dictID = 0; + + /* Create compressible test buffer */ + if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd) { + DISPLAY("Not enough memory, aborting \n"); + goto _output_error; + } + RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed); + + /* Create dictionary */ + DISPLAYLEVEL(3, "creating dictionary for unit tests \n"); + dictionary = FUZ_createDictionary(CNBuffer, CNBufferSize / 3, 16 KB, 48 KB); + if (!dictionary.start) { + DISPLAY("Error creating dictionary, aborting \n"); + goto _output_error; + } + dictID = ZDICT_getDictID(dictionary.start, dictionary.filled); + + /* Basic compression test */ + DISPLAYLEVEL(3, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + CHECK_Z( ZSTD_initCStream(zc, 1 /* cLevel */) ); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + DISPLAYLEVEL(3, "OK (%u bytes)\n", (unsigned)outBuff.pos); + + /* generate skippable frame */ + MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START); + MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize); + cSize = skippableFrameSize + 8; + + /* Basic compression test using dict */ + DISPLAYLEVEL(3, "test%3i : skipframe + compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + CHECK_Z( ZSTD_initCStream_usingDict(zc, CNBuffer, dictSize, 1 /* cLevel */) ); + outBuff.dst = (char*)(compressedBuffer)+cSize; + assert(compressedBufferSize > cSize); + outBuff.size = compressedBufferSize - cSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + cSize += outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", + (unsigned)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); + + /* context size functions */ + DISPLAYLEVEL(3, "test%3i : estimate CStream size : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictSize); + size_t const cstreamSize = ZSTD_estimateCStreamSize_usingCParams(cParams); + size_t const cdictSize = ZSTD_estimateCDictSize_advanced(dictSize, cParams, ZSTD_dlm_byCopy); /* uses ZSTD_initCStream_usingDict() */ + if (ZSTD_isError(cstreamSize)) goto _output_error; + if (ZSTD_isError(cdictSize)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)(cstreamSize + cdictSize)); + } + + /* context size functions */ + DISPLAYLEVEL(3, "test%3i : estimate CStream size using CCtxParams : ", testNb++); + { ZSTD_CCtx_params* const params = ZSTD_createCCtxParams(); + size_t cstreamSize, cctxSize; + CHECK_Z( ZSTD_CCtxParams_setParameter(params, ZSTD_c_compressionLevel, 19) ); + cstreamSize = ZSTD_estimateCStreamSize_usingCCtxParams(params); + CHECK_Z(cstreamSize); + cctxSize = ZSTD_estimateCCtxSize_usingCCtxParams(params); + CHECK_Z(cctxSize); + if (cstreamSize <= cctxSize + 2 * ZSTD_BLOCKSIZE_MAX) goto _output_error; + ZSTD_freeCCtxParams(params); + DISPLAYLEVEL(3, "OK \n"); + } + + DISPLAYLEVEL(3, "test%3i : check actual CStream size : ", testNb++); + { size_t const s = ZSTD_sizeof_CStream(zc); + if (ZSTD_isError(s)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s); + } + + /* Attempt bad compression parameters */ + DISPLAYLEVEL(3, "test%3i : use bad compression parameters : ", testNb++); + { size_t r; + ZSTD_parameters params = ZSTD_getParams(1, 0, 0); + params.cParams.minMatch = 2; + r = ZSTD_initCStream_advanced(zc, NULL, 0, params, 0); + if (!ZSTD_isError(r)) goto _output_error; + DISPLAYLEVEL(3, "init error : %s \n", ZSTD_getErrorName(r)); + } + + /* skippable frame test */ + DISPLAYLEVEL(3, "test%3i : decompress skippable frame : ", testNb++); + CHECK_Z( ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize) ); + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + DISPLAYLEVEL(5, " ( ZSTD_decompressStream => %u ) ", (unsigned)r); + if (r != 0) goto _output_error; + } + if (outBuff.pos != 0) goto _output_error; /* skippable frame output len is 0 */ + DISPLAYLEVEL(3, "OK \n"); + + /* Basic decompression test */ + inBuff2 = inBuff; + DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + CHECK_Z( ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, ZSTD_WINDOWLOG_LIMIT_DEFAULT+1) ); /* large limit */ + { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* Re-use without init */ + DISPLAYLEVEL(3, "test%3i : decompress again without init (re-use previous settings): ", testNb++); + outBuff.pos = 0; + { size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inBuff2); + if (remaining != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* check regenerated data is byte exact */ + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + { size_t i; + for (i=0; i<CNBufferSize; i++) { + if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error; + } } + DISPLAYLEVEL(3, "OK \n"); + + /* context size functions */ + DISPLAYLEVEL(3, "test%3i : estimate DStream size : ", testNb++); + { ZSTD_frameHeader fhi; + const void* cStart = (char*)compressedBuffer + (skippableFrameSize + 8); + size_t const gfhError = ZSTD_getFrameHeader(&fhi, cStart, cSize); + if (gfhError!=0) goto _output_error; + DISPLAYLEVEL(5, " (windowSize : %u) ", (unsigned)fhi.windowSize); + { size_t const s = ZSTD_estimateDStreamSize(fhi.windowSize) + /* uses ZSTD_initDStream_usingDict() */ + + ZSTD_estimateDDictSize(dictSize, ZSTD_dlm_byCopy); + if (ZSTD_isError(s)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s); + } } + + DISPLAYLEVEL(3, "test%3i : check actual DStream size : ", testNb++); + { size_t const s = ZSTD_sizeof_DStream(zd); + if (ZSTD_isError(s)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s); + } + + /* Decompression by small increment */ + DISPLAYLEVEL(3, "test%3i : decompress byte-by-byte : ", testNb++); + { /* skippable frame */ + size_t r = 1; + ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + inBuff.src = compressedBuffer; + outBuff.dst = decodedBuffer; + inBuff.pos = 0; + outBuff.pos = 0; + while (r) { /* skippable frame */ + size_t const inSize = (FUZ_rand(&coreSeed) & 15) + 1; + size_t const outSize = (FUZ_rand(&coreSeed) & 15) + 1; + inBuff.size = inBuff.pos + inSize; + outBuff.size = outBuff.pos + outSize; + r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream on skippable frame error : %s \n", ZSTD_getErrorName(r)); + if (ZSTD_isError(r)) goto _output_error; + } + /* normal frame */ + ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + r=1; + while (r) { + size_t const inSize = FUZ_rand(&coreSeed) & 15; + size_t const outSize = (FUZ_rand(&coreSeed) & 15) + (!inSize); /* avoid having both sizes at 0 => would trigger a no_forward_progress error */ + inBuff.size = inBuff.pos + inSize; + outBuff.size = outBuff.pos + outSize; + r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(r)); + if (ZSTD_isError(r)) goto _output_error; + } + } + if (outBuff.pos != CNBufferSize) DISPLAYLEVEL(4, "outBuff.pos != CNBufferSize : should have regenerated same amount ! \n"); + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != cSize) DISPLAYLEVEL(4, "inBuff.pos != cSize : should have real all input ! \n"); + if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */ + DISPLAYLEVEL(3, "OK \n"); + + /* check regenerated data is byte exact */ + DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++); + { size_t i; + for (i=0; i<CNBufferSize; i++) { + if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error; + } } + DISPLAYLEVEL(3, "OK \n"); + + /* Decompression forward progress */ + DISPLAYLEVEL(3, "test%3i : generate error when ZSTD_decompressStream() doesn't progress : ", testNb++); + { /* skippable frame */ + size_t r = 0; + int decNb = 0; + int const maxDec = 100; + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + + outBuff.dst = decodedBuffer; + outBuff.pos = 0; + outBuff.size = CNBufferSize-1; /* 1 byte missing */ + + for (decNb=0; decNb<maxDec; decNb++) { + if (r==0) ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(r)) break; + } + if (!ZSTD_isError(r)) DISPLAYLEVEL(4, "ZSTD_decompressStream should have triggered a no_forward_progress error \n"); + if (!ZSTD_isError(r)) goto _output_error; /* should have triggered no_forward_progress error */ + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : NULL buffers : ", testNb++); + inBuff.src = NULL; + inBuff.size = 0; + inBuff.pos = 0; + outBuff.dst = NULL; + outBuff.size = 0; + outBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + CHECK(inBuff.pos != inBuff.size, "Entire input should be consumed"); + CHECK_Z( ZSTD_endStream(zc, &outBuff) ); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + { size_t const r = ZSTD_endStream(zc, &outBuff); + CHECK(r != 0, "Error or some data not flushed (ret=%zu)", r); + } + inBuff.src = outBuff.dst; + inBuff.size = outBuff.pos; + inBuff.pos = 0; + outBuff.dst = NULL; + outBuff.size = 0; + outBuff.pos = 0; + CHECK_Z( ZSTD_initDStream(zd) ); + { size_t const ret = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ret != 0) goto _output_error; + } + DISPLAYLEVEL(3, "OK\n"); + /* _srcSize compression test */ + DISPLAYLEVEL(3, "test%3i : compress_srcSize %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + CHECK_Z( ZSTD_initCStream_srcSize(zc, 1, CNBufferSize) ); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + CHECK(inBuff.pos != inBuff.size, "Entire input should be consumed"); + { size_t const r = ZSTD_endStream(zc, &outBuff); + CHECK(r != 0, "Error or some data not flushed (ret=%zu)", r); + } + { unsigned long long origSize = ZSTD_findDecompressedSize(outBuff.dst, outBuff.pos); + CHECK(origSize == ZSTD_CONTENTSIZE_UNKNOWN, "Unknown!"); + CHECK((size_t)origSize != CNBufferSize, "Exact original size must be present (got %llu)", origSize); + } + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100); + + /* wrong _srcSize compression test */ + DISPLAYLEVEL(3, "test%3i : too large srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1); + ZSTD_initCStream_srcSize(zc, 1, CNBufferSize+1); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */ + DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); } + + /* wrong _srcSize compression test */ + DISPLAYLEVEL(3, "test%3i : too small srcSize : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1); + ZSTD_initCStream_srcSize(zc, 1, CNBufferSize-1); + outBuff.dst = (char*)(compressedBuffer); + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + { size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff); + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */ + DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); + } + + DISPLAYLEVEL(3, "test%3i : wrong srcSize !contentSizeFlag : %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH-1); + { ZSTD_parameters params = ZSTD_getParams(1, CNBufferSize, 0); + params.fParams.contentSizeFlag = 0; + CHECK_Z(ZSTD_initCStream_advanced(zc, NULL, 0, params, CNBufferSize - MIN(CNBufferSize, 200 KB))); + outBuff.dst = (char*)compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + { size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff); + if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; /* must fail : wrong srcSize */ + DISPLAYLEVEL(3, "OK (error detected : %s) \n", ZSTD_getErrorName(r)); + } } + + /* Complex context re-use scenario */ + DISPLAYLEVEL(3, "test%3i : context re-use : ", testNb++); + ZSTD_freeCStream(zc); + zc = ZSTD_createCStream(); + if (zc==NULL) goto _output_error; /* memory allocation issue */ + /* use 1 */ + { size_t const inSize = 513; + DISPLAYLEVEL(5, "use1 "); + ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */ + inBuff.src = CNBuffer; + inBuff.size = inSize; + inBuff.pos = 0; + outBuff.dst = (char*)(compressedBuffer)+cSize; + outBuff.size = ZSTD_compressBound(inSize); + outBuff.pos = 0; + DISPLAYLEVEL(5, "compress1 "); + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + DISPLAYLEVEL(5, "end1 "); + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + } + /* use 2 */ + { size_t const inSize = 1025; /* will not continue, because tables auto-adjust and are therefore different size */ + DISPLAYLEVEL(5, "use2 "); + ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */ + inBuff.src = CNBuffer; + inBuff.size = inSize; + inBuff.pos = 0; + outBuff.dst = (char*)(compressedBuffer)+cSize; + outBuff.size = ZSTD_compressBound(inSize); + outBuff.pos = 0; + DISPLAYLEVEL(5, "compress2 "); + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + DISPLAYLEVEL(5, "end2 "); + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + } + DISPLAYLEVEL(3, "OK \n"); + + /* Decompression single pass with empty frame */ + cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, NULL, 0, 1); + CHECK_Z(cSize); + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() single pass on empty frame : ", testNb++); + { ZSTD_DCtx* dctx = ZSTD_createDCtx(); + size_t const dctxSize = ZSTD_sizeof_DCtx(dctx); + CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1)); + + outBuff.dst = decodedBuffer; + outBuff.pos = 0; + outBuff.size = CNBufferSize; + + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff); + CHECK_Z(r); + CHECK(r != 0, "Entire frame must be decompressed"); + CHECK(outBuff.pos != 0, "Wrong size!"); + CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!"); + } + CHECK(dctxSize != ZSTD_sizeof_DCtx(dctx), "No buffers allocated"); + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Decompression with ZSTD_d_stableOutBuffer */ + cSize = ZSTD_compress(compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize, 1); + CHECK_Z(cSize); + { ZSTD_DCtx* dctx = ZSTD_createDCtx(); + size_t const dctxSize0 = ZSTD_sizeof_DCtx(dctx); + size_t dctxSize1; + CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1)); + + outBuff.dst = decodedBuffer; + outBuff.pos = 0; + outBuff.size = CNBufferSize; + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() single pass : ", testNb++); + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff); + CHECK_Z(r); + CHECK(r != 0, "Entire frame must be decompressed"); + CHECK(outBuff.pos != CNBufferSize, "Wrong size!"); + CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!"); + } + CHECK(dctxSize0 != ZSTD_sizeof_DCtx(dctx), "No buffers allocated"); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer : ", testNb++); + outBuff.pos = 0; + inBuff.pos = 0; + inBuff.size = 0; + while (inBuff.pos < cSize) { + inBuff.size += MIN(cSize - inBuff.pos, 1 + (FUZ_rand(&coreSeed) & 15)); + CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff)); + } + CHECK(outBuff.pos != CNBufferSize, "Wrong size!"); + CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!"); + dctxSize1 = ZSTD_sizeof_DCtx(dctx); + CHECK(!(dctxSize0 < dctxSize1), "Input buffer allocated"); + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer too small : ", testNb++); + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only); + CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1)); + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + outBuff.pos = 0; + outBuff.size = CNBufferSize - 1; + { size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff); + CHECK(ZSTD_getErrorCode(r) != ZSTD_error_dstSize_tooSmall, "Must error but got %s", ZSTD_getErrorName(r)); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() stable out buffer modified : ", testNb++); + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only); + CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 1)); + inBuff.src = compressedBuffer; + inBuff.size = cSize - 1; + inBuff.pos = 0; + outBuff.pos = 0; + outBuff.size = CNBufferSize; + CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff)); + ++inBuff.size; + outBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(dctx, &outBuff, &inBuff); + CHECK(ZSTD_getErrorCode(r) != ZSTD_error_dstBuffer_wrong, "Must error but got %s", ZSTD_getErrorName(r)); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() buffered output : ", testNb++); + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only); + CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_stableOutBuffer, 0)); + outBuff.pos = 0; + inBuff.pos = 0; + inBuff.size = 0; + while (inBuff.pos < cSize) { + inBuff.size += MIN(cSize - inBuff.pos, 1 + (FUZ_rand(&coreSeed) & 15)); + CHECK_Z(ZSTD_decompressStream(dctx, &outBuff, &inBuff)); + } + CHECK(outBuff.pos != CNBufferSize, "Wrong size!"); + CHECK(memcmp(CNBuffer, outBuff.dst, CNBufferSize) != 0, "Corruption!"); + CHECK(!(dctxSize1 < ZSTD_sizeof_DCtx(dctx)), "Output buffer allocated"); + DISPLAYLEVEL(3, "OK \n"); + + ZSTD_freeDCtx(dctx); + } + + /* CDict scenario */ + DISPLAYLEVEL(3, "test%3i : digested dictionary : ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict(dictionary.start, dictionary.filled, 1 /*byRef*/ ); + size_t const initError = ZSTD_initCStream_usingCDict(zc, cdict); + DISPLAYLEVEL(5, "ZSTD_initCStream_usingCDict result : %u ", (unsigned)initError); + if (ZSTD_isError(initError)) goto _output_error; + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + DISPLAYLEVEL(5, "- starting ZSTD_compressStream "); + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + DISPLAYLEVEL(5, "- ZSTD_endStream result : %u ", (unsigned)r); + if (r != 0) goto _output_error; /* error, or some data not flushed */ + } + cSize = outBuff.pos; + ZSTD_freeCDict(cdict); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + } + + DISPLAYLEVEL(3, "test%3i : check CStream size : ", testNb++); + { size_t const s = ZSTD_sizeof_CStream(zc); + if (ZSTD_isError(s)) goto _output_error; + DISPLAYLEVEL(3, "OK (%u bytes) \n", (unsigned)s); + } + + DISPLAYLEVEL(4, "test%3i : check Dictionary ID : ", testNb++); + { unsigned const dID = ZSTD_getDictID_fromFrame(compressedBuffer, cSize); + if (dID != dictID) goto _output_error; + DISPLAYLEVEL(4, "OK (%u) \n", dID); + } + + /* DDict scenario */ + DISPLAYLEVEL(3, "test%3i : decompress %u bytes with digested dictionary : ", testNb++, (unsigned)CNBufferSize); + { ZSTD_DDict* const ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + size_t const initError = ZSTD_initDStream_usingDDict(zd, ddict); + if (ZSTD_isError(initError)) goto _output_error; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (r != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */ + if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */ + ZSTD_freeDDict(ddict); + DISPLAYLEVEL(3, "OK \n"); + } + + /* Memory restriction */ + DISPLAYLEVEL(3, "test%3i : maxWindowSize < frame requirement : ", testNb++); + ZSTD_initDStream_usingDict(zd, CNBuffer, dictSize); + CHECK_Z( ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, 10) ); /* too small limit */ + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + { size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (!ZSTD_isError(r)) goto _output_error; /* must fail : frame requires > 100 bytes */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); } + ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters); /* leave zd in good shape for next tests */ + + DISPLAYLEVEL(3, "test%3i : dictionary source size and level : ", testNb++); + { ZSTD_DCtx* const dctx = ZSTD_createDCtx(); + int const maxLevel = 16; /* first level with zstd_opt */ + int level; + assert(maxLevel < ZSTD_maxCLevel()); + CHECK_Z( ZSTD_DCtx_loadDictionary_byReference(dctx, dictionary.start, dictionary.filled) ); + for (level = 1; level <= maxLevel; ++level) { + ZSTD_CDict* const cdict = ZSTD_createCDict(dictionary.start, dictionary.filled, level); + size_t const maxSize = MIN(1 MB, CNBufferSize); + size_t size; + for (size = 512; size <= maxSize; size <<= 1) { + U64 const crcOrig = XXH64(CNBuffer, size, 0); + ZSTD_CCtx* const cctx = ZSTD_createCCtx(); + ZSTD_parameters savedParams; + getCCtxParams(cctx, &savedParams); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = size; + inBuff.pos = 0; + CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict)); + CHECK_Z(ZSTD_compressStream2(cctx, &outBuff, &inBuff, ZSTD_e_end)); + CHECK(badParameters(cctx, savedParams), "Bad CCtx params"); + if (inBuff.pos != inBuff.size) goto _output_error; + { ZSTD_outBuffer decOut = {decodedBuffer, size, 0}; + ZSTD_inBuffer decIn = {outBuff.dst, outBuff.pos, 0}; + CHECK_Z( ZSTD_decompressStream(dctx, &decOut, &decIn) ); + if (decIn.pos != decIn.size) goto _output_error; + if (decOut.pos != size) goto _output_error; + { U64 const crcDec = XXH64(decOut.dst, decOut.pos, 0); + if (crcDec != crcOrig) goto _output_error; + } } + ZSTD_freeCCtx(cctx); + } + ZSTD_freeCDict(cdict); + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK\n"); + + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dictionary.start, dictionary.filled) ); + cSize = ZSTD_compress2(zc, compressedBuffer, compressedBufferSize, CNBuffer, MIN(CNBufferSize, 100 KB)); + CHECK_Z(cSize); + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + /* We should fail to decompress without a dictionary. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + 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, dictionary.start, dictionary.filled) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should presist across calls. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should not be cleared by ZSTD_reset_session_only. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* When we reset the context the dictionary is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_resetDStream() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + /* We should succeed to decompress with the dictionary. */ + ZSTD_resetDStream(dctx); + CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictionary.start, dictionary.filled) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should not be cleared by ZSTD_resetDStream(). */ + ZSTD_resetDStream(dctx); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The dictionary should be cleared by ZSTD_initDStream(). */ + CHECK_Z( ZSTD_initDStream(dctx) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_decompressStream() with ddict : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + ZSTD_DDict* ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + /* We should succeed to decompress with the ddict. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The ddict should presist across calls. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* When we reset the context the ddict is cleared. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + 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(); + /* We should succeed to decompress with the prefix. */ + ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters); + CHECK_Z( ZSTD_DCtx_refPrefix_advanced(dctx, dictionary.start, dictionary.filled, ZSTD_dct_auto) ); + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error; + if (in.pos != in.size) goto _output_error; + } + /* The prefix should be cleared after the first compression. */ + { ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0}; + ZSTD_inBuffer in = {compressedBuffer, cSize, 0}; + size_t const ret = ZSTD_decompressStream(dctx, &out, &in); + if (!ZSTD_isError(ret)) goto _output_error; + } + ZSTD_freeDCtx(dctx); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initDStream*() with dictionary : ", testNb++); + { + ZSTD_DCtx* dctx = ZSTD_createDCtx(); + ZSTD_DDict* ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + size_t ret; + /* We should succeed to decompress with the dictionary. */ + CHECK_Z( ZSTD_initDStream_usingDict(dctx, dictionary.start, dictionary.filled) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* The dictionary should presist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* We should succeed to decompress with the ddict. */ + CHECK_Z( ZSTD_initDStream_usingDDict(dctx, ddict) ); + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* The ddict should presist across calls. */ + CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) ); + /* When we reset the context the ddict is cleared. */ + CHECK_Z( ZSTD_initDStream(dctx) ); + ret = ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(ret)) goto _output_error; + ZSTD_freeDCtx(dctx); + ZSTD_freeDDict(ddict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_usingCDict_advanced with masked dictID : ", testNb++); + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, CNBufferSize, dictionary.filled); + ZSTD_frameParameters const fParams = { 1 /* contentSize */, 1 /* checksum */, 1 /* noDictID */}; + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_auto, cParams, ZSTD_defaultCMem); + size_t const initError = ZSTD_initCStream_usingCDict_advanced(zc, cdict, fParams, CNBufferSize); + if (ZSTD_isError(initError)) goto _output_error; + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const r = ZSTD_endStream(zc, &outBuff); + if (r != 0) goto _output_error; } /* error, or some data not flushed */ + cSize = outBuff.pos; + ZSTD_freeCDict(cdict); + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + } + + DISPLAYLEVEL(3, "test%3i : try retrieving dictID from frame : ", testNb++); + { U32 const did = ZSTD_getDictID_fromFrame(compressedBuffer, cSize); + if (did != 0) goto _output_error; + } + DISPLAYLEVEL(3, "OK (not detected) \n"); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary : ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); + } + + DISPLAYLEVEL(3, "test%3i : compress with ZSTD_CCtx_refPrefix : ", testNb++); + CHECK_Z( ZSTD_CCtx_refPrefix(zc, dictionary.start, dictionary.filled) ); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + + DISPLAYLEVEL(3, "test%3i : decompress with ZSTD_DCtx_refPrefix : ", testNb++); + CHECK_Z( ZSTD_DCtx_refPrefix(zd, dictionary.start, dictionary.filled) ); + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.size = cSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_decompressStream(zd, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + if (outBuff.pos != CNBufferSize) goto _output_error; /* must regenerate whole input */ + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should fail): ", testNb++); + { size_t const r = ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize); + if (!ZSTD_isError(r)) goto _output_error; /* must fail : dictionary not used */ + DISPLAYLEVEL(3, "OK (%s)\n", ZSTD_getErrorName(r)); + } + + DISPLAYLEVEL(3, "test%3i : compress again with ZSTD_compressStream2 : ", testNb++); + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBufferSize*100); + + DISPLAYLEVEL(3, "test%3i : decompress without dictionary (should work): ", testNb++); + CHECK_Z( ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize) ); + DISPLAYLEVEL(3, "OK \n"); + + /* Empty srcSize */ + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced with pledgedSrcSize=0 and dict : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(5, 0, 0); + params.fParams.contentSizeFlag = 1; + CHECK_Z( ZSTD_initCStream_advanced(zc, dictionary.start, dictionary.filled, params, 0 /* pledgedSrcSize==0 means "empty" when params.fParams.contentSizeFlag is set */) ); + } /* cstream advanced shall write content size = 0 */ + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : pledgedSrcSize == 0 behaves properly : ", testNb++); + { ZSTD_parameters params = ZSTD_getParams(5, 0, 0); + params.fParams.contentSizeFlag = 1; + CHECK_Z( ZSTD_initCStream_advanced(zc, NULL, 0, params, 0) ); + } /* cstream advanced shall write content size = 0 */ + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != 0) goto _output_error; + + ZSTD_resetCStream(zc, 0); /* resetCStream should treat 0 as unknown */ + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = 0; + inBuff.pos = 0; + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + if (ZSTD_endStream(zc, &outBuff) != 0) goto _output_error; + cSize = outBuff.pos; + if (ZSTD_findDecompressedSize(compressedBuffer, cSize) != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error; + DISPLAYLEVEL(3, "OK \n"); + + /* Basic multithreading compression test */ + DISPLAYLEVEL(3, "test%3i : compress %u bytes with multiple threads : ", testNb++, COMPRESSIBLE_NOISE_LENGTH); + { ZSTD_parameters const params = ZSTD_getParams(1, 0, 0); + int jobSize; + CHECK_Z( ZSTDMT_getMTCtxParameter(mtctx, ZSTDMT_p_jobSize, &jobSize)); + CHECK(jobSize != 0, "job size non-zero"); + CHECK_Z( ZSTDMT_initCStream_advanced(mtctx, CNBuffer, dictSize, params, CNBufferSize) ); + CHECK_Z( ZSTDMT_getMTCtxParameter(mtctx, ZSTDMT_p_jobSize, &jobSize)); + CHECK(jobSize != 0, "job size non-zero"); + } + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = CNBufferSize; + inBuff.pos = 0; + { size_t const compressResult = ZSTDMT_compressStream_generic(mtctx, &outBuff, &inBuff, ZSTD_e_end); + if (compressResult != 0) goto _output_error; /* compression must be completed in a single round */ + } + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + { size_t const compressedSize = ZSTD_findFrameCompressedSize(compressedBuffer, outBuff.pos); + if (compressedSize != outBuff.pos) goto _output_error; /* must be a full valid frame */ + } + DISPLAYLEVEL(3, "OK \n"); + + /* Complex multithreading + dictionary test */ + { U32 const nbWorkers = 2; + size_t const jobSize = 4 * 1 MB; + size_t const srcSize = jobSize * nbWorkers; /* we want each job to have predictable size */ + size_t const segLength = 2 KB; + size_t const offset = 600 KB; /* must be larger than window defined in cdict */ + size_t const start = jobSize + (offset-1); + const BYTE* const srcToCopy = (const BYTE*)CNBuffer + start; + BYTE* const dst = (BYTE*)CNBuffer + start - offset; + DISPLAYLEVEL(3, "test%3i : compress %u bytes with multiple threads + dictionary : ", testNb++, (unsigned)srcSize); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 3) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, nbWorkers) ); + CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_jobSize, jobSize) ); + assert(start > offset); + assert(start + segLength < COMPRESSIBLE_NOISE_LENGTH); + memcpy(dst, srcToCopy, segLength); /* create a long repetition at long distance for job 2 */ + outBuff.dst = compressedBuffer; + outBuff.size = compressedBufferSize; + outBuff.pos = 0; + inBuff.src = CNBuffer; + inBuff.size = srcSize; assert(srcSize < COMPRESSIBLE_NOISE_LENGTH); + inBuff.pos = 0; + } + { ZSTD_compressionParameters const cParams = ZSTD_getCParams(1, 4 KB, dictionary.filled); /* intentionally lies on estimatedSrcSize, to push cdict into targeting a small window size */ + ZSTD_CDict* const cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem); + DISPLAYLEVEL(5, "cParams.windowLog = %u : ", cParams.windowLog); + CHECK_Z( ZSTD_CCtx_refCDict(zc, cdict) ); + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end) ); + CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) ); /* do not keep a reference to cdict, as its lifetime ends */ + ZSTD_freeCDict(cdict); + } + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + cSize = outBuff.pos; + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : decompress large frame created from multiple threads + dictionary : ", testNb++); + { ZSTD_DStream* const dstream = ZSTD_createDCtx(); + ZSTD_frameHeader zfh; + ZSTD_getFrameHeader(&zfh, compressedBuffer, cSize); + DISPLAYLEVEL(5, "frame windowsize = %u : ", (unsigned)zfh.windowSize); + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + inBuff.src = compressedBuffer; + inBuff.pos = 0; + CHECK_Z( ZSTD_initDStream_usingDict(dstream, dictionary.start, dictionary.filled) ); + inBuff.size = 1; /* avoid shortcut to single-pass mode */ + CHECK_Z( ZSTD_decompressStream(dstream, &outBuff, &inBuff) ); + inBuff.size = cSize; + CHECK_Z( ZSTD_decompressStream(dstream, &outBuff, &inBuff) ); + if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */ + ZSTD_freeDStream(dstream); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : check dictionary FSE tables can represent every code : ", testNb++); + { unsigned const kMaxWindowLog = 24; + unsigned value; + ZSTD_compressionParameters cParams = ZSTD_getCParams(3, 1U << kMaxWindowLog, 1024); + ZSTD_CDict* cdict; + ZSTD_DDict* ddict; + SEQ_stream seq = SEQ_initStream(0x87654321); + SEQ_gen_type type; + XXH64_state_t xxh; + + XXH64_reset(&xxh, 0); + cParams.windowLog = kMaxWindowLog; + cdict = ZSTD_createCDict_advanced(dictionary.start, dictionary.filled, ZSTD_dlm_byRef, ZSTD_dct_fullDict, cParams, ZSTD_defaultCMem); + ddict = ZSTD_createDDict(dictionary.start, dictionary.filled); + + if (!cdict || !ddict) goto _output_error; + + ZSTD_CCtx_reset(zc, ZSTD_reset_session_only); + ZSTD_resetDStream(zd); + CHECK_Z(ZSTD_CCtx_refCDict(zc, cdict)); + CHECK_Z(ZSTD_initDStream_usingDDict(zd, ddict)); + CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, kMaxWindowLog)); + /* Test all values < 300 */ + for (value = 0; value < 300; ++value) { + for (type = (SEQ_gen_type)0; type < SEQ_gen_max; ++type) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value)); + } + } + /* Test values 2^8 to 2^17 */ + for (value = (1 << 8); value < (1 << 17); value <<= 1) { + for (type = (SEQ_gen_type)0; type < SEQ_gen_max; ++type) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value)); + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, type, value + (value >> 2))); + } + } + /* Test offset values up to the max window log */ + for (value = 8; value <= kMaxWindowLog; ++value) { + CHECK_Z(SEQ_generateRoundTrip(zc, zd, &xxh, &seq, SEQ_gen_of, (1U << value) - 1)); + } + + CHECK_Z(SEQ_roundTrip(zc, zd, &xxh, NULL, 0, ZSTD_e_end)); + CHECK(SEQ_digest(&seq) != XXH64_digest(&xxh), "SEQ XXH64 does not match"); + + ZSTD_freeCDict(cdict); + ZSTD_freeDDict(ddict); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_srcSize sets requestedParams : ", testNb++); + { int level; + CHECK_Z(ZSTD_initCStream_srcSize(zc, 11, ZSTD_CONTENTSIZE_UNKNOWN)); + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_compressionLevel, &level)); + CHECK(level != 11, "Compression level does not match"); + ZSTD_resetCStream(zc, ZSTD_CONTENTSIZE_UNKNOWN); + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_compressionLevel, &level)); + CHECK(level != 11, "Compression level does not match"); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_initCStream_advanced sets requestedParams : ", testNb++); + { ZSTD_parameters const params = ZSTD_getParams(9, 0, 0); + CHECK_Z(ZSTD_initCStream_advanced(zc, NULL, 0, params, ZSTD_CONTENTSIZE_UNKNOWN)); + CHECK(badParameters(zc, params), "Compression parameters do not match"); + ZSTD_resetCStream(zc, ZSTD_CONTENTSIZE_UNKNOWN); + CHECK(badParameters(zc, params), "Compression parameters do not match"); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : ZSTD_c_srcSizeHint bounds : ", testNb++); + ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_srcSizeHint, INT_MAX)); + { int srcSizeHint; + CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_srcSizeHint, &srcSizeHint)); + CHECK(!(srcSizeHint == INT_MAX), "srcSizeHint doesn't match"); + } + CHECK(!ZSTD_isError(ZSTD_CCtx_setParameter(zc, ZSTD_c_srcSizeHint, -1)), "Out of range doesn't error"); + DISPLAYLEVEL(3, "OK \n"); + + /* Overlen overwriting window data bug */ + DISPLAYLEVEL(3, "test%3i : wildcopy doesn't overwrite potential match data : ", testNb++); + { /* This test has a window size of 1024 bytes and consists of 3 blocks: + 1. 'a' repeated 517 times + 2. 'b' repeated 516 times + 3. a compressed block with no literals and 3 sequence commands: + litlength = 0, offset = 24, match length = 24 + litlength = 0, offset = 24, match length = 3 (this one creates an overlength write of length 2*WILDCOPY_OVERLENGTH - 3) + litlength = 0, offset = 1021, match length = 3 (this one will try to read from overwritten data if the buffer is too small) */ + + const char* testCase = + "\x28\xB5\x2F\xFD\x04\x00\x4C\x00\x00\x10\x61\x61\x01\x00\x00\x2A" + "\x80\x05\x44\x00\x00\x08\x62\x01\x00\x00\x2A\x20\x04\x5D\x00\x00" + "\x00\x03\x40\x00\x00\x64\x60\x27\xB0\xE0\x0C\x67\x62\xCE\xE0"; + ZSTD_DStream* const zds = ZSTD_createDStream(); + if (zds==NULL) goto _output_error; + + CHECK_Z( ZSTD_initDStream(zds) ); + inBuff.src = testCase; + inBuff.size = 47; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + + while (inBuff.pos < inBuff.size) { + CHECK_Z( ZSTD_decompressStream(zds, &outBuff, &inBuff) ); + } + + ZSTD_freeDStream(zds); + } + DISPLAYLEVEL(3, "OK \n"); + + /* Small Sequence Section bug */ + DISPLAYLEVEL(3, "test%3i : decompress blocks with small sequences section : ", testNb++); + { /* This test consists of 3 blocks. Each block has one sequence. + The sequence has literal length of 10, match length of 10 and offset of 10. + The sequence value and compression mode for the blocks are following: + The order of values are ll, ml, of. + - First block : (10, 7, 13) (rle, rle, rle) + - size of sequences section: 6 bytes (1 byte for nbSeq, 1 byte for encoding mode, 3 bytes for rle, 1 byte bitstream) + - Second block : (10, 7, 1) (repeat, repeat, rle) + - size of sequences section: 4 bytes (1 byte for nbSeq, 1 byte for encoding mode, 1 bytes for rle, 1 byte bitstream) + - Third block : (10, 7, 1) (repeat, repeat, repeat) + - size of sequences section: 3 bytes (1 byte for nbSeq, 1 byte for encoding mode, 1 byte bitstream) */ + + unsigned char compressed[] = { + 0x28, 0xb5, 0x2f, 0xfd, 0x24, 0x3c, 0x35, 0x01, 0x00, 0xf0, 0x85, 0x08, + 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x4c, 0x6b, 0xa9, 0x8b, + 0xbc, 0xc5, 0xb6, 0xd9, 0x7f, 0x4c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, + 0x69, 0x94, 0x89, 0x1c, 0x03, 0x44, 0x0a, 0x07, 0x00, 0xb4, 0x04, 0x80, + 0x40, 0x0a, 0xa4 + }; + unsigned int compressedSize = 51; + unsigned char decompressed[] = { + 0x85, 0x08, 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x85, 0x08, + 0xc2, 0xc4, 0x70, 0xcf, 0xd7, 0xc0, 0x96, 0x7e, 0x4c, 0x6b, 0xa9, 0x8b, + 0xbc, 0xc5, 0xb6, 0xd9, 0x7f, 0x4c, 0x4c, 0x6b, 0xa9, 0x8b, 0xbc, 0xc5, + 0xb6, 0xd9, 0x7f, 0x4c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, 0x69, 0x94, + 0x89, 0x1c, 0xf1, 0x05, 0xa6, 0x54, 0xef, 0xac, 0x69, 0x94, 0x89, 0x1c + }; + unsigned int decompressedSize = 60; + + ZSTD_DStream* const zds = ZSTD_createDStream(); + if (zds==NULL) goto _output_error; + + CHECK_Z( ZSTD_initDStream(zds) ); + inBuff.src = compressed; + inBuff.size = compressedSize; + inBuff.pos = 0; + outBuff.dst = decodedBuffer; + outBuff.size = CNBufferSize; + outBuff.pos = 0; + + CHECK(ZSTD_decompressStream(zds, &outBuff, &inBuff) != 0, + "Decompress did not reach the end of frame"); + CHECK(inBuff.pos != inBuff.size, "Decompress did not fully consume input"); + CHECK(outBuff.pos != decompressedSize, "Decompressed size does not match"); + CHECK(memcmp(outBuff.dst, decompressed, decompressedSize) != 0, + "Decompressed data does not match"); + + ZSTD_freeDStream(zds); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : raw block can be streamed: ", testNb++); + { size_t const inputSize = 10000; + size_t const compCapacity = ZSTD_compressBound(inputSize); + BYTE* const input = (BYTE*)malloc(inputSize); + BYTE* const comp = (BYTE*)malloc(compCapacity); + BYTE* const decomp = (BYTE*)malloc(inputSize); + + CHECK(input == NULL || comp == NULL || decomp == NULL, "failed to alloc buffers"); + + RDG_genBuffer(input, inputSize, 0.0, 0.0, seed); + { size_t const compSize = ZSTD_compress(comp, compCapacity, input, inputSize, -(int)inputSize); + ZSTD_inBuffer in = { comp, 0, 0 }; + ZSTD_outBuffer out = { decomp, 0, 0 }; + CHECK_Z(compSize); + CHECK_Z( ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters) ); + while (in.size < compSize) { + in.size = MIN(in.size + 100, compSize); + while (in.pos < in.size) { + size_t const outPos = out.pos; + if (out.pos == out.size) { + out.size = MIN(out.size + 10, inputSize); + } + CHECK_Z( ZSTD_decompressStream(zd, &out, &in) ); + CHECK(!(out.pos > outPos), "We are not streaming (no output generated)"); + } + } + CHECK(in.pos != compSize, "Not all input consumed!"); + CHECK(out.pos != inputSize, "Not all output produced!"); + } + CHECK(memcmp(input, decomp, inputSize), "round trip failed!"); + + free(input); + free(comp); + free(decomp); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : dictionary + uncompressible block + reusing tables checks offset table validity: ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict_advanced( + dictionary.start, dictionary.filled, + ZSTD_dlm_byRef, ZSTD_dct_fullDict, + ZSTD_getCParams(3, 0, dictionary.filled), + ZSTD_defaultCMem); + const size_t inbufsize = 2 * 128 * 1024; /* 2 blocks */ + const size_t outbufsize = ZSTD_compressBound(inbufsize); + size_t inbufpos = 0; + size_t cursegmentlen; + BYTE *inbuf = (BYTE *)malloc(inbufsize); + BYTE *outbuf = (BYTE *)malloc(outbufsize); + BYTE *checkbuf = (BYTE *)malloc(inbufsize); + size_t ret; + + CHECK(cdict == NULL, "failed to alloc cdict"); + CHECK(inbuf == NULL, "failed to alloc input buffer"); + + /* first block is uncompressible */ + cursegmentlen = 128 * 1024; + RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0., 0., seed); + inbufpos += cursegmentlen; + + /* second block is compressible */ + cursegmentlen = 128 * 1024 - 256; + RDG_genBuffer(inbuf + inbufpos, cursegmentlen, 0.05, 0., seed); + inbufpos += cursegmentlen; + + /* and includes a very long backref */ + cursegmentlen = 128; + memcpy(inbuf + inbufpos, (BYTE*)dictionary.start + 256, cursegmentlen); + inbufpos += cursegmentlen; + + /* and includes a very long backref */ + cursegmentlen = 128; + memcpy(inbuf + inbufpos, (BYTE*)dictionary.start + 128, cursegmentlen); + inbufpos += cursegmentlen; + + ret = ZSTD_compress_usingCDict(zc, outbuf, outbufsize, inbuf, inbufpos, cdict); + CHECK_Z(ret); + + ret = ZSTD_decompress_usingDict(zd, checkbuf, inbufsize, outbuf, ret, dictionary.start, dictionary.filled); + CHECK_Z(ret); + + CHECK(memcmp(inbuf, checkbuf, inbufpos), "start and finish buffers don't match"); + + ZSTD_freeCDict(cdict); + free(inbuf); + free(outbuf); + free(checkbuf); + } + DISPLAYLEVEL(3, "OK \n"); + + DISPLAYLEVEL(3, "test%3i : dictionary + small blocks + reusing tables checks offset table validity: ", testNb++); + { ZSTD_CDict* const cdict = ZSTD_createCDict_advanced( + dictionary.start, dictionary.filled, + ZSTD_dlm_byRef, ZSTD_dct_fullDict, + ZSTD_getCParams(3, 0, dictionary.filled), + ZSTD_defaultCMem); + ZSTD_outBuffer out = {compressedBuffer, compressedBufferSize, 0}; + int remainingInput = 256 * 1024; + int offset; + + CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters)); + CHECK_Z(ZSTD_CCtx_refCDict(zc, cdict)); + CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1)); + /* Write a bunch of 6 byte blocks */ + while (remainingInput > 0) { + char testBuffer[6] = "\xAA\xAA\xAA\xAA\xAA\xAA"; + const size_t kSmallBlockSize = sizeof(testBuffer); + ZSTD_inBuffer in = {testBuffer, kSmallBlockSize, 0}; + + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_flush)); + CHECK(in.pos != in.size, "input not fully consumed"); + remainingInput -= kSmallBlockSize; + } + /* Write several very long offset matches into the dictionary */ + for (offset = 1024; offset >= 0; offset -= 128) { + ZSTD_inBuffer in = {(BYTE*)dictionary.start + offset, 128, 0}; + ZSTD_EndDirective flush = offset > 0 ? ZSTD_e_continue : ZSTD_e_end; + CHECK_Z(ZSTD_compressStream2(zc, &out, &in, flush)); + CHECK(in.pos != in.size, "input not fully consumed"); + } + /* Ensure decompression works */ + CHECK_Z(ZSTD_decompress_usingDict(zd, decodedBuffer, CNBufferSize, out.dst, out.pos, dictionary.start, dictionary.filled)); + + ZSTD_freeCDict(cdict); + } + DISPLAYLEVEL(3, "OK \n"); + +_end: + FUZ_freeDictionary(dictionary); + ZSTD_freeCStream(zc); + ZSTD_freeDStream(zd); + ZSTDMT_freeCCtx(mtctx); + free(CNBuffer); + free(compressedBuffer); + free(decodedBuffer); + return testResult; + +_output_error: + testResult = 1; + DISPLAY("Error detected in Unit tests ! \n"); + goto _end; +} + + +/* ====== Fuzzer tests ====== */ + +static size_t findDiff(const void* buf1, const void* buf2, size_t max) +{ + const BYTE* b1 = (const BYTE*)buf1; + const BYTE* b2 = (const BYTE*)buf2; + size_t u; + for (u=0; u<max; u++) { + if (b1[u] != b2[u]) break; + } + if (u==max) { + DISPLAY("=> No difference detected within %u bytes \n", (unsigned)max); + return u; + } + DISPLAY("Error at position %u / %u \n", (unsigned)u, (unsigned)max); + if (u>=3) + DISPLAY(" %02X %02X %02X ", + b1[u-3], b1[u-2], b1[u-1]); + DISPLAY(" :%02X: %02X %02X %02X %02X %02X \n", + b1[u], b1[u+1], b1[u+2], b1[u+3], b1[u+4], b1[u+5]); + if (u>=3) + DISPLAY(" %02X %02X %02X ", + b2[u-3], b2[u-2], b2[u-1]); + DISPLAY(" :%02X: %02X %02X %02X %02X %02X \n", + b2[u], b2[u+1], b2[u+2], b2[u+3], b2[u+4], b2[u+5]); + return u; +} + +static size_t FUZ_rLogLength(U32* seed, U32 logLength) +{ + size_t const lengthMask = ((size_t)1 << logLength) - 1; + return (lengthMask+1) + (FUZ_rand(seed) & lengthMask); +} + +static size_t FUZ_randomLength(U32* seed, U32 maxLog) +{ + U32 const logLength = FUZ_rand(seed) % maxLog; + return FUZ_rLogLength(seed, logLength); +} + +/* Return value in range minVal <= v <= maxVal */ +static U32 FUZ_randomClampedLength(U32* seed, U32 minVal, U32 maxVal) +{ + U32 const mod = maxVal < minVal ? 1 : (maxVal + 1) - minVal; + return (U32)((FUZ_rand(seed) % mod) + minVal); +} + +static int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double compressibility, int bigTests) +{ + U32 const maxSrcLog = bigTests ? 24 : 22; + static const U32 maxSampleLog = 19; + size_t const srcBufferSize = (size_t)1<<maxSrcLog; + BYTE* cNoiseBuffer[5]; + size_t const copyBufferSize = srcBufferSize + (1<<maxSampleLog); + BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize); + size_t const cBufferSize = ZSTD_compressBound(srcBufferSize); + BYTE* const cBuffer = (BYTE*)malloc (cBufferSize); + size_t const dstBufferSize = srcBufferSize; + BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize); + U32 result = 0; + unsigned testNb = 0; + U32 coreSeed = seed; + ZSTD_CStream* zc = ZSTD_createCStream(); /* will be re-created sometimes */ + ZSTD_DStream* zd = ZSTD_createDStream(); /* will be re-created sometimes */ + ZSTD_DStream* const zd_noise = ZSTD_createDStream(); + UTIL_time_t const startClock = UTIL_getTime(); + const BYTE* dict = NULL; /* can keep same dict on 2 consecutive tests */ + size_t dictSize = 0; + U32 oldTestLog = 0; + U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel() : g_cLevelMax_smallTests; + + /* allocations */ + cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize); + CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] || + !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise , + "Not enough memory, fuzzer tests cancelled"); + + /* Create initial samples */ + RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */ + RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */ + RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed); + RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */ + RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */ + memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */ + ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */ + + /* catch up testNb */ + for (testNb=1; testNb < startTest; testNb++) + FUZ_rand(&coreSeed); + + /* test loop */ + for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < g_clockTime) ; testNb++ ) { + U32 lseed; + const BYTE* srcBuffer; + size_t totalTestSize, totalGenSize, cSize; + XXH64_state_t xxhState; + U64 crcOrig; + U32 resetAllowed = 1; + size_t maxTestSize; + + /* init */ + FUZ_rand(&coreSeed); + lseed = coreSeed ^ prime32; + if (nbTests >= testNb) { + DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); + } else { + DISPLAYUPDATE(2, "\r%6u ", testNb); + } + + /* states full reset (deliberately not synchronized) */ + /* some issues can only happen when reusing states */ + if ((FUZ_rand(&lseed) & 0xFF) == 131) { + ZSTD_freeCStream(zc); + zc = ZSTD_createCStream(); + CHECK(zc==NULL, "ZSTD_createCStream : allocation error"); + resetAllowed=0; + } + if ((FUZ_rand(&lseed) & 0xFF) == 132) { + ZSTD_freeDStream(zd); + zd = ZSTD_createDStream(); + CHECK(zd==NULL, "ZSTD_createDStream : allocation error"); + CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */ + } + + /* srcBuffer selection [0-4] */ + { U32 buffNb = FUZ_rand(&lseed) & 0x7F; + if (buffNb & 7) buffNb=2; /* most common : compressible (P) */ + else { + buffNb >>= 3; + if (buffNb & 7) { + const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */ + buffNb = tnb[buffNb >> 3]; + } else { + const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */ + buffNb = tnb[buffNb >> 3]; + } } + srcBuffer = cNoiseBuffer[buffNb]; + } + + /* compression init */ + if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */ + && oldTestLog /* at least one test happened */ && resetAllowed) { + maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2); + maxTestSize = MIN(maxTestSize, srcBufferSize-16); + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? 0 : maxTestSize; + CHECK_Z( ZSTD_resetCStream(zc, pledgedSrcSize) ); + } + } else { + U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const cLevelCandidate = ( FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - + (MAX(testLog, dictLog) / 3))) + + 1; + U32 const cLevel = MIN(cLevelCandidate, cLevelMax); + maxTestSize = FUZ_rLogLength(&lseed, testLog); + oldTestLog = testLog; + /* random dictionary selection */ + dictSize = ((FUZ_rand(&lseed)&7)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0; + { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize); + dict = srcBuffer + dictStart; + } + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize); + params.fParams.checksumFlag = FUZ_rand(&lseed) & 1; + params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1; + params.fParams.contentSizeFlag = FUZ_rand(&lseed) & 1; + CHECK_Z ( ZSTD_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) ); + } } + + /* multi-segments compression test */ + XXH64_reset(&xxhState, 0); + { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ; + U32 n; + for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) { + /* compress random chunks into randomly sized dst buffers */ + { size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize); + size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize); + ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 }; + outBuff.size = outBuff.pos + dstBuffSize; + + CHECK_Z( ZSTD_compressStream(zc, &outBuff, &inBuff) ); + + XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos); + memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos); + totalTestSize += inBuff.pos; + } + + /* random flush operation, to mess around */ + if ((FUZ_rand(&lseed) & 15) == 0) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + CHECK_Z( ZSTD_flushStream(zc, &outBuff) ); + } } + + /* final frame epilogue */ + { size_t remainingToFlush = (size_t)(-1); + while (remainingToFlush) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + remainingToFlush = ZSTD_endStream(zc, &outBuff); + CHECK (ZSTD_isError(remainingToFlush), "end error : %s", ZSTD_getErrorName(remainingToFlush)); + } } + crcOrig = XXH64_digest(&xxhState); + cSize = outBuff.pos; + } + + /* multi - fragments decompression test */ + if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) { + CHECK_Z ( ZSTD_resetDStream(zd) ); + } else { + CHECK_Z ( ZSTD_initDStream_usingDict(zd, dict, dictSize) ); + } + { size_t decompressionResult = 1; + ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + for (totalGenSize = 0 ; decompressionResult ; ) { + size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize); + inBuff.size = inBuff.pos + readCSrcSize; + outBuff.size = outBuff.pos + dstBuffSize; + decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_getErrorCode(decompressionResult) == ZSTD_error_checksum_wrong) { + DISPLAY("checksum error : \n"); + findDiff(copyBuffer, dstBuffer, totalTestSize); + } + CHECK( ZSTD_isError(decompressionResult), "decompression error : %s", + ZSTD_getErrorName(decompressionResult) ); + } + CHECK (decompressionResult != 0, "frame not fully decoded"); + CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", + (unsigned)outBuff.pos, (unsigned)totalTestSize); + CHECK (inBuff.pos != cSize, "compressed data should be fully read") + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize); + CHECK (crcDest!=crcOrig, "decompressed data corrupted"); + } } + + /*===== noisy/erroneous src decompression test =====*/ + + /* add some noise */ + { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2; + U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) { + size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const noiseSize = MIN((cSize/3) , randomNoiseSize); + size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize); + size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize); + memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize); + } } + + /* try decompression on noisy data */ + CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */ + { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + while (outBuff.pos < dstBufferSize) { + size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize); + size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize); + outBuff.size = outBuff.pos + adjustedDstSize; + inBuff.size = inBuff.pos + adjustedCSrcSize; + { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(decompressError)) break; /* error correctly detected */ + /* No forward progress possible */ + if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break; + } } } } + DISPLAY("\r%u fuzzer tests completed \n", testNb); + +_cleanup: + ZSTD_freeCStream(zc); + ZSTD_freeDStream(zd); + ZSTD_freeDStream(zd_noise); + free(cNoiseBuffer[0]); + free(cNoiseBuffer[1]); + free(cNoiseBuffer[2]); + free(cNoiseBuffer[3]); + free(cNoiseBuffer[4]); + free(copyBuffer); + free(cBuffer); + free(dstBuffer); + return result; + +_output_error: + result = 1; + goto _cleanup; +} + + +/* fuzzing ZSTDMT_* interface */ +static int fuzzerTests_MT(U32 seed, int nbTests, int startTest, + double compressibility, int bigTests) +{ + const U32 maxSrcLog = bigTests ? 24 : 22; + static const U32 maxSampleLog = 19; + size_t const srcBufferSize = (size_t)1<<maxSrcLog; + BYTE* cNoiseBuffer[5]; + size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog); + BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize); + size_t const cBufferSize = ZSTD_compressBound(srcBufferSize); + BYTE* const cBuffer = (BYTE*)malloc (cBufferSize); + size_t const dstBufferSize = srcBufferSize; + BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize); + U32 result = 0; + int testNb = 0; + U32 coreSeed = seed; + int nbThreads = 2; + ZSTDMT_CCtx* zc = ZSTDMT_createCCtx(nbThreads); /* will be reset sometimes */ + ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */ + ZSTD_DStream* const zd_noise = ZSTD_createDStream(); + UTIL_time_t const startClock = UTIL_getTime(); + const BYTE* dict=NULL; /* can keep same dict on 2 consecutive tests */ + size_t dictSize = 0; + int const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel()-1 : g_cLevelMax_smallTests; + U32 const nbThreadsMax = bigTests ? 4 : 2; + + /* allocations */ + cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize); + CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] || + !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise , + "Not enough memory, fuzzer tests cancelled"); + + /* Create initial samples */ + RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */ + RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */ + RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed); + RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */ + RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */ + memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */ + ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */ + DISPLAYLEVEL(6, "Creating initial context with %i threads \n", nbThreads); + + /* catch up testNb */ + for (testNb=1; testNb < startTest; testNb++) + FUZ_rand(&coreSeed); + + /* test loop */ + for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < g_clockTime) ; testNb++ ) { + U32 lseed; + const BYTE* srcBuffer; + size_t totalTestSize, totalGenSize, cSize; + XXH64_state_t xxhState; + U64 crcOrig; + size_t maxTestSize; + + FUZ_rand(&coreSeed); + if (nbTests >= testNb) { + DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); + } else { + DISPLAYUPDATE(2, "\r%6u ", testNb); + } + lseed = coreSeed ^ prime32; + + /* states full reset (deliberately not synchronized) */ + /* some issues can only happen when reusing states */ + if ((FUZ_rand(&lseed) & 0xFF) == 131) { + nbThreads = (FUZ_rand(&lseed) % nbThreadsMax) + 1; + DISPLAYLEVEL(5, "Creating new context with %u threads \n", nbThreads); + ZSTDMT_freeCCtx(zc); + zc = ZSTDMT_createCCtx(nbThreads); + CHECK(zc==NULL, "ZSTDMT_createCCtx allocation error") + } + if ((FUZ_rand(&lseed) & 0xFF) == 132) { + ZSTD_freeDStream(zd); + zd = ZSTD_createDStream(); + CHECK(zd==NULL, "ZSTDMT_createCCtx allocation error") + ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */ + } + + /* srcBuffer selection [0-4] */ + { U32 buffNb = FUZ_rand(&lseed) & 0x7F; + if (buffNb & 7) buffNb=2; /* most common : compressible (P) */ + else { + buffNb >>= 3; + if (buffNb & 7) { + const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */ + buffNb = tnb[buffNb >> 3]; + } else { + const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */ + buffNb = tnb[buffNb >> 3]; + } } + srcBuffer = cNoiseBuffer[buffNb]; + } + + /* compression init */ + { U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + int const cLevelCandidate = ( FUZ_rand(&lseed) + % (ZSTD_maxCLevel() - (MAX(testLog, dictLog) / 2)) ) + + 1; + int const cLevelThreadAdjusted = cLevelCandidate - (nbThreads * 2) + 2; /* reduce cLevel when multiple threads to reduce memory consumption */ + int const cLevelMin = MAX(cLevelThreadAdjusted, 1); /* no negative cLevel yet */ + int const cLevel = MIN(cLevelMin, cLevelMax); + maxTestSize = FUZ_rLogLength(&lseed, testLog); + + if (FUZ_rand(&lseed)&1) { /* simple init */ + int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1; + DISPLAYLEVEL(5, "Init with compression level = %i \n", compressionLevel); + CHECK_Z( ZSTDMT_initCStream(zc, compressionLevel) ); + } else { /* advanced init */ + /* random dictionary selection */ + dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0; + { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize); + dict = srcBuffer + dictStart; + } + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + ZSTD_parameters params = ZSTD_getParams(cLevel, pledgedSrcSize, dictSize); + DISPLAYLEVEL(5, "Init with windowLog = %u, pledgedSrcSize = %u, dictSize = %u \n", + params.cParams.windowLog, (unsigned)pledgedSrcSize, (unsigned)dictSize); + params.fParams.checksumFlag = FUZ_rand(&lseed) & 1; + params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1; + params.fParams.contentSizeFlag = FUZ_rand(&lseed) & 1; + DISPLAYLEVEL(5, "checksumFlag : %u \n", params.fParams.checksumFlag); + CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_overlapLog, FUZ_rand(&lseed) % 12) ); + CHECK_Z( ZSTDMT_setMTCtxParameter(zc, ZSTDMT_p_jobSize, FUZ_rand(&lseed) % (2*maxTestSize+1)) ); /* custom job size */ + CHECK_Z( ZSTDMT_initCStream_advanced(zc, dict, dictSize, params, pledgedSrcSize) ); + } } } + + /* multi-segments compression test */ + XXH64_reset(&xxhState, 0); + { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ; + U32 n; + for (n=0, cSize=0, totalTestSize=0 ; totalTestSize < maxTestSize ; n++) { + /* compress random chunks into randomly sized dst buffers */ + { size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const srcSize = MIN (maxTestSize-totalTestSize, randomSrcSize); + size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize); + ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 }; + outBuff.size = outBuff.pos + dstBuffSize; + + DISPLAYLEVEL(6, "Sending %u bytes to compress \n", (unsigned)srcSize); + CHECK_Z( ZSTDMT_compressStream(zc, &outBuff, &inBuff) ); + DISPLAYLEVEL(6, "%u bytes read by ZSTDMT_compressStream \n", (unsigned)inBuff.pos); + + XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos); + memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos); + totalTestSize += inBuff.pos; + } + + /* random flush operation, to mess around */ + if ((FUZ_rand(&lseed) & 15) == 0) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + size_t const previousPos = outBuff.pos; + outBuff.size = outBuff.pos + adjustedDstSize; + DISPLAYLEVEL(5, "Flushing into dst buffer of size %u \n", (unsigned)adjustedDstSize); + CHECK_Z( ZSTDMT_flushStream(zc, &outBuff) ); + assert(outBuff.pos >= previousPos); + DISPLAYLEVEL(6, "%u bytes flushed by ZSTDMT_flushStream \n", (unsigned)(outBuff.pos-previousPos)); + } } + + /* final frame epilogue */ + { size_t remainingToFlush = (size_t)(-1); + while (remainingToFlush) { + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + size_t const previousPos = outBuff.pos; + outBuff.size = outBuff.pos + adjustedDstSize; + DISPLAYLEVEL(5, "Ending into dst buffer of size %u \n", (unsigned)adjustedDstSize); + remainingToFlush = ZSTDMT_endStream(zc, &outBuff); + CHECK (ZSTD_isError(remainingToFlush), "ZSTDMT_endStream error : %s", ZSTD_getErrorName(remainingToFlush)); + assert(outBuff.pos >= previousPos); + DISPLAYLEVEL(6, "%u bytes flushed by ZSTDMT_endStream \n", (unsigned)(outBuff.pos-previousPos)); + DISPLAYLEVEL(5, "endStream : remainingToFlush : %u \n", (unsigned)remainingToFlush); + } } + crcOrig = XXH64_digest(&xxhState); + cSize = outBuff.pos; + DISPLAYLEVEL(5, "Frame completed : %u bytes compressed into %u bytes \n", + (unsigned)totalTestSize, (unsigned)cSize); + } + + /* multi - fragments decompression test */ + assert(totalTestSize < dstBufferSize); + memset(dstBuffer, 170, totalTestSize); /* init dest area */ + if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) { + CHECK_Z( ZSTD_resetDStream(zd) ); + } else { + CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) ); + } + { size_t decompressionResult = 1; + ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + for (totalGenSize = 0 ; decompressionResult ; ) { + size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize); + inBuff.size = inBuff.pos + readCSrcSize; + outBuff.size = outBuff.pos + dstBuffSize; + DISPLAYLEVEL(6, "ZSTD_decompressStream input %u bytes into outBuff %u bytes \n", + (unsigned)readCSrcSize, (unsigned)dstBuffSize); + decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(decompressionResult)) { + DISPLAY("ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(decompressionResult)); + findDiff(copyBuffer, dstBuffer, totalTestSize); + } + CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult)); + DISPLAYLEVEL(6, "total ingested (inBuff.pos) = %u and produced (outBuff.pos) = %u \n", + (unsigned)inBuff.pos, (unsigned)outBuff.pos); + } + CHECK (outBuff.pos != totalTestSize, + "decompressed data : wrong size (%u != %u)", + (unsigned)outBuff.pos, (unsigned)totalTestSize ); + CHECK (inBuff.pos != cSize, + "compressed data should be fully read (%u != %u)", + (unsigned)inBuff.pos, (unsigned)cSize ); + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize); + CHECK (crcDest!=crcOrig, "decompressed data corrupted"); + } } + + /*===== noisy/erroneous src decompression test =====*/ + + /* add some noise */ + { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2; + U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) { + size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const noiseSize = MIN((cSize/3) , randomNoiseSize); + size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize); + size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize); + memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize); + } } + + /* try decompression on noisy data */ + CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */ + { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + while (outBuff.pos < dstBufferSize) { + size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize); + size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize); + outBuff.size = outBuff.pos + adjustedDstSize; + inBuff.size = inBuff.pos + adjustedCSrcSize; + { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(decompressError)) break; /* error correctly detected */ + /* No forward progress possible */ + if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break; + } } } } + DISPLAY("\r%u fuzzer tests completed \n", testNb); + +_cleanup: + ZSTDMT_freeCCtx(zc); + ZSTD_freeDStream(zd); + ZSTD_freeDStream(zd_noise); + free(cNoiseBuffer[0]); + free(cNoiseBuffer[1]); + free(cNoiseBuffer[2]); + free(cNoiseBuffer[3]); + free(cNoiseBuffer[4]); + free(copyBuffer); + free(cBuffer); + free(dstBuffer); + return result; + +_output_error: + result = 1; + goto _cleanup; +} + +/** If useOpaqueAPI, sets param in cctxParams. + * Otherwise, sets the param in zc. */ +static size_t setCCtxParameter(ZSTD_CCtx* zc, ZSTD_CCtx_params* cctxParams, + ZSTD_cParameter param, unsigned value, + int useOpaqueAPI) +{ + if (useOpaqueAPI) { + return ZSTD_CCtxParams_setParameter(cctxParams, param, value); + } else { + return ZSTD_CCtx_setParameter(zc, param, value); + } +} + +/* Tests for ZSTD_compress_generic() API */ +static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest, + double compressibility, int bigTests) +{ + U32 const maxSrcLog = bigTests ? 24 : 22; + static const U32 maxSampleLog = 19; + size_t const srcBufferSize = (size_t)1<<maxSrcLog; + BYTE* cNoiseBuffer[5]; + size_t const copyBufferSize= srcBufferSize + (1<<maxSampleLog); + BYTE* const copyBuffer = (BYTE*)malloc (copyBufferSize); + size_t const cBufferSize = ZSTD_compressBound(srcBufferSize); + BYTE* const cBuffer = (BYTE*)malloc (cBufferSize); + size_t const dstBufferSize = srcBufferSize; + BYTE* const dstBuffer = (BYTE*)malloc (dstBufferSize); + U32 result = 0; + int testNb = 0; + U32 coreSeed = seed; + ZSTD_CCtx* zc = ZSTD_createCCtx(); /* will be reset sometimes */ + ZSTD_DStream* zd = ZSTD_createDStream(); /* will be reset sometimes */ + ZSTD_DStream* const zd_noise = ZSTD_createDStream(); + UTIL_time_t const startClock = UTIL_getTime(); + const BYTE* dict = NULL; /* can keep same dict on 2 consecutive tests */ + size_t dictSize = 0; + U32 oldTestLog = 0; + U32 windowLogMalus = 0; /* can survive between 2 loops */ + U32 const cLevelMax = bigTests ? (U32)ZSTD_maxCLevel()-1 : g_cLevelMax_smallTests; + U32 const nbThreadsMax = bigTests ? 4 : 2; + ZSTD_CCtx_params* cctxParams = ZSTD_createCCtxParams(); + + /* allocations */ + cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize); + cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize); + CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] || + !copyBuffer || !dstBuffer || !cBuffer || !zc || !zd || !zd_noise , + "Not enough memory, fuzzer tests cancelled"); + + /* Create initial samples */ + RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */ + RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */ + RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed); + RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */ + RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */ + memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */ + CHECK_Z( ZSTD_initDStream_usingDict(zd, NULL, 0) ); /* ensure at least one init */ + + /* catch up testNb */ + for (testNb=1; testNb < startTest; testNb++) + FUZ_rand(&coreSeed); + + /* test loop */ + for ( ; (testNb <= nbTests) || (UTIL_clockSpanMicro(startClock) < g_clockTime) ; testNb++ ) { + U32 lseed; + int opaqueAPI; + const BYTE* srcBuffer; + size_t totalTestSize, totalGenSize, cSize; + XXH64_state_t xxhState; + U64 crcOrig; + U32 resetAllowed = 1; + size_t maxTestSize; + ZSTD_parameters savedParams; + + /* init */ + if (nbTests >= testNb) { DISPLAYUPDATE(2, "\r%6u/%6u ", testNb, nbTests); } + else { DISPLAYUPDATE(2, "\r%6u ", testNb); } + FUZ_rand(&coreSeed); + lseed = coreSeed ^ prime32; + DISPLAYLEVEL(5, " *** Test %u *** \n", testNb); + opaqueAPI = FUZ_rand(&lseed) & 1; + + /* states full reset (deliberately not synchronized) */ + /* some issues can only happen when reusing states */ + if ((FUZ_rand(&lseed) & 0xFF) == 131) { + DISPLAYLEVEL(5, "Creating new context \n"); + ZSTD_freeCCtx(zc); + zc = ZSTD_createCCtx(); + CHECK(zc == NULL, "ZSTD_createCCtx allocation error"); + resetAllowed = 0; + } + if ((FUZ_rand(&lseed) & 0xFF) == 132) { + ZSTD_freeDStream(zd); + zd = ZSTD_createDStream(); + CHECK(zd == NULL, "ZSTD_createDStream allocation error"); + ZSTD_initDStream_usingDict(zd, NULL, 0); /* ensure at least one init */ + } + + /* srcBuffer selection [0-4] */ + { U32 buffNb = FUZ_rand(&lseed) & 0x7F; + if (buffNb & 7) buffNb=2; /* most common : compressible (P) */ + else { + buffNb >>= 3; + if (buffNb & 7) { + const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */ + buffNb = tnb[buffNb >> 3]; + } else { + const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */ + buffNb = tnb[buffNb >> 3]; + } } + srcBuffer = cNoiseBuffer[buffNb]; + } + + /* compression init */ + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, NULL, 0) ); /* cancel previous dict /*/ + if ((FUZ_rand(&lseed)&1) /* at beginning, to keep same nb of rand */ + && oldTestLog /* at least one test happened */ + && resetAllowed) { + /* just set a compression level */ + maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2); + if (maxTestSize >= srcBufferSize) maxTestSize = srcBufferSize-1; + { int const compressionLevel = (FUZ_rand(&lseed) % 5) + 1; + DISPLAYLEVEL(5, "t%u : compression level : %i \n", testNb, compressionLevel); + CHECK_Z (setCCtxParameter(zc, cctxParams, ZSTD_c_compressionLevel, compressionLevel, opaqueAPI) ); + } + } else { + U32 const testLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const dictLog = FUZ_rand(&lseed) % maxSrcLog; + U32 const cLevelCandidate = (FUZ_rand(&lseed) % + (ZSTD_maxCLevel() - + (MAX(testLog, dictLog) / 2))) + + 1; + int const cLevel = MIN(cLevelCandidate, cLevelMax); + DISPLAYLEVEL(5, "t%i: base cLevel : %u \n", testNb, cLevel); + maxTestSize = FUZ_rLogLength(&lseed, testLog); + DISPLAYLEVEL(5, "t%i: maxTestSize : %u \n", testNb, (unsigned)maxTestSize); + oldTestLog = testLog; + /* random dictionary selection */ + dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_rLogLength(&lseed, dictLog) : 0; + { size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize); + dict = srcBuffer + dictStart; + if (!dictSize) dict=NULL; + } + { U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize; + ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, pledgedSrcSize, dictSize); + const U32 windowLogMax = bigTests ? 24 : 20; + const U32 searchLogMax = bigTests ? 15 : 13; + if (dictSize) + DISPLAYLEVEL(5, "t%u: with dictionary of size : %zu \n", testNb, dictSize); + + /* mess with compression parameters */ + cParams.windowLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.windowLog = MIN(windowLogMax, cParams.windowLog); + cParams.hashLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.chainLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.searchLog += (FUZ_rand(&lseed) & 3) - 1; + cParams.searchLog = MIN(searchLogMax, cParams.searchLog); + cParams.minMatch += (FUZ_rand(&lseed) & 3) - 1; + cParams.targetLength = (U32)((cParams.targetLength + 1 ) * (0.5 + ((double)(FUZ_rand(&lseed) & 127) / 128))); + cParams = ZSTD_adjustCParams(cParams, pledgedSrcSize, dictSize); + + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: windowLog : %u \n", testNb, cParams.windowLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_windowLog, cParams.windowLog, opaqueAPI) ); + assert(cParams.windowLog >= ZSTD_WINDOWLOG_MIN); /* guaranteed by ZSTD_adjustCParams() */ + windowLogMalus = (cParams.windowLog - ZSTD_WINDOWLOG_MIN) / 5; + } + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: hashLog : %u \n", testNb, cParams.hashLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_hashLog, cParams.hashLog, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: chainLog : %u \n", testNb, cParams.chainLog); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_chainLog, cParams.chainLog, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_searchLog, cParams.searchLog, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_minMatch, cParams.minMatch, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_targetLength, cParams.targetLength, opaqueAPI) ); + + /* mess with long distance matching parameters */ + if (bigTests) { + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_enableLongDistanceMatching, FUZ_rand(&lseed) & 63, opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmHashLog, FUZ_randomClampedLength(&lseed, ZSTD_HASHLOG_MIN, 23), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmMinMatch, FUZ_randomClampedLength(&lseed, ZSTD_LDM_MINMATCH_MIN, ZSTD_LDM_MINMATCH_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmBucketSizeLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_BUCKETSIZELOG_MIN, ZSTD_LDM_BUCKETSIZELOG_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_ldmHashRateLog, FUZ_randomClampedLength(&lseed, ZSTD_LDM_HASHRATELOG_MIN, ZSTD_LDM_HASHRATELOG_MAX), opaqueAPI) ); + if (FUZ_rand(&lseed) & 3) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_srcSizeHint, FUZ_randomClampedLength(&lseed, ZSTD_SRCSIZEHINT_MIN, ZSTD_SRCSIZEHINT_MAX), opaqueAPI) ); + } + + /* mess with frame parameters */ + if (FUZ_rand(&lseed) & 1) { + int const checksumFlag = FUZ_rand(&lseed) & 1; + DISPLAYLEVEL(5, "t%u: frame checksum : %u \n", testNb, checksumFlag); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_checksumFlag, checksumFlag, opaqueAPI) ); + } + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_dictIDFlag, FUZ_rand(&lseed) & 1, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_contentSizeFlag, FUZ_rand(&lseed) & 1, opaqueAPI) ); + if (FUZ_rand(&lseed) & 1) { + DISPLAYLEVEL(5, "t%u: pledgedSrcSize : %u \n", testNb, (unsigned)pledgedSrcSize); + CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) ); + } + + /* multi-threading parameters. Only adjust occasionally for small tests. */ + if (bigTests || (FUZ_rand(&lseed) & 0xF) == 0xF) { + U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1; + U32 const nbThreadsAdjusted = (windowLogMalus < nbThreadsCandidate) ? nbThreadsCandidate - windowLogMalus : 1; + int const nbThreads = MIN(nbThreadsAdjusted, nbThreadsMax); + DISPLAYLEVEL(5, "t%i: nbThreads : %u \n", testNb, nbThreads); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_nbWorkers, nbThreads, opaqueAPI) ); + if (nbThreads > 1) { + U32 const jobLog = FUZ_rand(&lseed) % (testLog+1); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_overlapLog, FUZ_rand(&lseed) % 10, opaqueAPI) ); + CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_jobSize, (U32)FUZ_rLogLength(&lseed, jobLog), opaqueAPI) ); + } + } + /* Enable rsyncable mode 1 in 4 times. */ + setCCtxParameter(zc, cctxParams, ZSTD_c_rsyncable, (FUZ_rand(&lseed) % 4 == 0), opaqueAPI); + + if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_forceMaxWindow, FUZ_rand(&lseed) & 1, opaqueAPI) ); + + /* Apply parameters */ + if (opaqueAPI) { + DISPLAYLEVEL(5, "t%u: applying CCtxParams \n", testNb); + CHECK_Z (ZSTD_CCtx_setParametersUsingCCtxParams(zc, cctxParams) ); + } + + if (FUZ_rand(&lseed) & 1) { + if (FUZ_rand(&lseed) & 1) { + CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) ); + } else { + CHECK_Z( ZSTD_CCtx_loadDictionary_byReference(zc, dict, dictSize) ); + } + } else { + CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) ); + } + } } + + CHECK_Z(getCCtxParams(zc, &savedParams)); + + /* multi-segments compression test */ + XXH64_reset(&xxhState, 0); + { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ; + for (cSize=0, totalTestSize=0 ; (totalTestSize < maxTestSize) ; ) { + /* compress random chunks into randomly sized dst buffers */ + size_t const randomSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const srcSize = MIN(maxTestSize-totalTestSize, randomSrcSize); + size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - srcSize); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1); + size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize); + ZSTD_EndDirective const flush = (FUZ_rand(&lseed) & 15) ? ZSTD_e_continue : ZSTD_e_flush; + ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 }; + outBuff.size = outBuff.pos + dstBuffSize; + + CHECK_Z( ZSTD_compressStream2(zc, &outBuff, &inBuff, flush) ); + DISPLAYLEVEL(6, "t%u: compress consumed %u bytes (total : %u) ; flush: %u (total : %u) \n", + testNb, (unsigned)inBuff.pos, (unsigned)(totalTestSize + inBuff.pos), (unsigned)flush, (unsigned)outBuff.pos); + + XXH64_update(&xxhState, srcBuffer+srcStart, inBuff.pos); + memcpy(copyBuffer+totalTestSize, srcBuffer+srcStart, inBuff.pos); + totalTestSize += inBuff.pos; + } + + /* final frame epilogue */ + { size_t remainingToFlush = 1; + while (remainingToFlush) { + ZSTD_inBuffer inBuff = { NULL, 0, 0 }; + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1); + size_t const adjustedDstSize = MIN(cBufferSize - cSize, randomDstSize); + outBuff.size = outBuff.pos + adjustedDstSize; + DISPLAYLEVEL(6, "t%u: End-flush into dst buffer of size %u \n", testNb, (unsigned)adjustedDstSize); + remainingToFlush = ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end); + DISPLAYLEVEL(6, "t%u: Total flushed so far : %u bytes \n", testNb, (unsigned)outBuff.pos); + CHECK( ZSTD_isError(remainingToFlush), + "ZSTD_compressStream2 w/ ZSTD_e_end error : %s", + ZSTD_getErrorName(remainingToFlush) ); + } } + crcOrig = XXH64_digest(&xxhState); + cSize = outBuff.pos; + DISPLAYLEVEL(5, "Frame completed : %zu bytes \n", cSize); + } + + CHECK(badParameters(zc, savedParams), "CCtx params are wrong"); + + /* multi - fragments decompression test */ + if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) { + DISPLAYLEVEL(5, "resetting DCtx (dict:%p) \n", dict); + CHECK_Z( ZSTD_resetDStream(zd) ); + } else { + if (dictSize) + DISPLAYLEVEL(5, "using dictionary of size %zu \n", dictSize); + CHECK_Z( ZSTD_initDStream_usingDict(zd, dict, dictSize) ); + } + { size_t decompressionResult = 1; + ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + for (totalGenSize = 0 ; decompressionResult ; ) { + size_t const readCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const dstBuffSize = MIN(dstBufferSize - totalGenSize, randomDstSize); + inBuff.size = inBuff.pos + readCSrcSize; + outBuff.size = outBuff.pos + dstBuffSize; + DISPLAYLEVEL(6, "decompression presented %u new bytes (pos:%u/%u)\n", + (unsigned)readCSrcSize, (unsigned)inBuff.pos, (unsigned)cSize); + decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff); + DISPLAYLEVEL(6, "so far: consumed = %u, produced = %u \n", + (unsigned)inBuff.pos, (unsigned)outBuff.pos); + if (ZSTD_isError(decompressionResult)) { + DISPLAY("ZSTD_decompressStream error : %s \n", ZSTD_getErrorName(decompressionResult)); + findDiff(copyBuffer, dstBuffer, totalTestSize); + } + CHECK (ZSTD_isError(decompressionResult), "decompression error : %s", ZSTD_getErrorName(decompressionResult)); + CHECK (inBuff.pos > cSize, "ZSTD_decompressStream consumes too much input : %u > %u ", (unsigned)inBuff.pos, (unsigned)cSize); + } + CHECK (inBuff.pos != cSize, "compressed data should be fully read (%u != %u)", (unsigned)inBuff.pos, (unsigned)cSize); + CHECK (outBuff.pos != totalTestSize, "decompressed data : wrong size (%u != %u)", (unsigned)outBuff.pos, (unsigned)totalTestSize); + { U64 const crcDest = XXH64(dstBuffer, totalTestSize, 0); + if (crcDest!=crcOrig) findDiff(copyBuffer, dstBuffer, totalTestSize); + CHECK (crcDest!=crcOrig, "decompressed data corrupted"); + } } + + /*===== noisy/erroneous src decompression test =====*/ + + /* add some noise */ + { U32 const nbNoiseChunks = (FUZ_rand(&lseed) & 7) + 2; + U32 nn; for (nn=0; nn<nbNoiseChunks; nn++) { + size_t const randomNoiseSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const noiseSize = MIN((cSize/3) , randomNoiseSize); + size_t const noiseStart = FUZ_rand(&lseed) % (srcBufferSize - noiseSize); + size_t const cStart = FUZ_rand(&lseed) % (cSize - noiseSize); + memcpy(cBuffer+cStart, srcBuffer+noiseStart, noiseSize); + } } + + /* try decompression on noisy data */ + CHECK_Z( ZSTD_initDStream(zd_noise) ); /* note : no dictionary */ + { ZSTD_inBuffer inBuff = { cBuffer, cSize, 0 }; + ZSTD_outBuffer outBuff= { dstBuffer, dstBufferSize, 0 }; + while (outBuff.pos < dstBufferSize) { + size_t const randomCSrcSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog); + size_t const adjustedDstSize = MIN(dstBufferSize - outBuff.pos, randomDstSize); + size_t const adjustedCSrcSize = MIN(cSize - inBuff.pos, randomCSrcSize); + outBuff.size = outBuff.pos + adjustedDstSize; + inBuff.size = inBuff.pos + adjustedCSrcSize; + { size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff); + if (ZSTD_isError(decompressError)) break; /* error correctly detected */ + /* Good so far, but no more progress possible */ + if (outBuff.pos < outBuff.size && inBuff.pos == cSize) break; + } } } } + DISPLAY("\r%u fuzzer tests completed \n", testNb-1); + +_cleanup: + ZSTD_freeCCtx(zc); + ZSTD_freeDStream(zd); + ZSTD_freeDStream(zd_noise); + ZSTD_freeCCtxParams(cctxParams); + free(cNoiseBuffer[0]); + free(cNoiseBuffer[1]); + free(cNoiseBuffer[2]); + free(cNoiseBuffer[3]); + free(cNoiseBuffer[4]); + free(copyBuffer); + free(cBuffer); + free(dstBuffer); + return result; + +_output_error: + result = 1; + goto _cleanup; +} + +/*-******************************************************* +* Command line +*********************************************************/ +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:%u)\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; +} + +typedef enum { simple_api, mt_api, advanced_api } e_api; + +int main(int argc, const char** argv) +{ + U32 seed = 0; + int seedset = 0; + int nbTests = nbTestsDefault; + int testNb = 0; + int proba = FUZ_COMPRESSIBILITY_DEFAULT; + int result = 0; + int mainPause = 0; + int bigTests = (sizeof(size_t) == 8); + e_api selected_api = simple_api; + const char* const programName = argv[0]; + int argNb; + + /* Check command line */ + for(argNb=1; argNb<argc; argNb++) { + const char* argument = argv[argNb]; + assert(argument != NULL); + + /* Parsing commands. Aggregated commands are allowed */ + if (argument[0]=='-') { + + if (!strcmp(argument, "--mt")) { selected_api=mt_api; testNb += !testNb; continue; } + if (!strcmp(argument, "--newapi")) { selected_api=advanced_api; testNb += !testNb; continue; } + if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; } + + argument++; + while (*argument!=0) { + switch(*argument) + { + case 'h': + return FUZ_usage(programName); + + case 'v': + argument++; + g_displayLevel++; + break; + + case 'q': + argument++; + g_displayLevel--; + break; + + case 'p': /* pause at the end */ + argument++; + mainPause = 1; + break; + + case 'i': /* limit tests by nb of iterations (default) */ + argument++; + nbTests=0; g_clockTime=0; + while ((*argument>='0') && (*argument<='9')) { + nbTests *= 10; + nbTests += *argument - '0'; + argument++; + } + break; + + case 'T': /* limit tests by time */ + argument++; + nbTests=0; g_clockTime=0; + while ((*argument>='0') && (*argument<='9')) { + g_clockTime *= 10; + g_clockTime += *argument - '0'; + argument++; + } + if (*argument=='m') { /* -T1m == -T60 */ + g_clockTime *=60, argument++; + if (*argument=='n') argument++; /* -T1mn == -T60 */ + } else if (*argument=='s') argument++; /* -T10s == -T10 */ + g_clockTime *= SEC_TO_MICRO; + break; + + case 's': /* manually select seed */ + argument++; + seedset=1; + seed=0; + while ((*argument>='0') && (*argument<='9')) { + seed *= 10; + seed += *argument - '0'; + argument++; + } + break; + + case 't': /* select starting test number */ + argument++; + testNb=0; + while ((*argument>='0') && (*argument<='9')) { + testNb *= 10; + testNb += *argument - '0'; + argument++; + } + break; + + case 'P': /* compressibility % */ + argument++; + proba=0; + while ((*argument>='0') && (*argument<='9')) { + proba *= 10; + proba += *argument - '0'; + argument++; + } + if (proba<0) proba=0; + if (proba>100) proba=100; + break; + + default: + return FUZ_usage(programName); + } + } } } /* for(argNb=1; argNb<argc; argNb++) */ + + /* Get Seed */ + DISPLAY("Starting zstream tester (%i-bits, %s)\n", (int)(sizeof(size_t)*8), ZSTD_VERSION_STRING); + + if (!seedset) { + time_t const t = time(NULL); + U32 const h = XXH32(&t, sizeof(t), 1); + seed = h % 10000; + } + + DISPLAY("Seed = %u\n", (unsigned)seed); + if (proba!=FUZ_COMPRESSIBILITY_DEFAULT) DISPLAY("Compressibility : %i%%\n", proba); + + if (nbTests<=0) nbTests=1; + + if (testNb==0) { + result = basicUnitTests(0, ((double)proba) / 100); /* constant seed for predictability */ + } + + if (!result) { + switch(selected_api) + { + case simple_api : + result = fuzzerTests(seed, nbTests, testNb, ((double)proba) / 100, bigTests); + break; + case mt_api : + result = fuzzerTests_MT(seed, nbTests, testNb, ((double)proba) / 100, bigTests); + break; + case advanced_api : + result = fuzzerTests_newAPI(seed, nbTests, testNb, ((double)proba) / 100, bigTests); + break; + default : + assert(0); /* impossible */ + } + } + + if (mainPause) { + int unused; + DISPLAY("Press Enter \n"); + unused = getchar(); + (void)unused; + } + return result; +} |