--- /dev/null
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * 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 <time.h> /* time_t, time(), to randomize seed */
+#include <assert.h> /* assert */
+#include "timefn.h" /* UTIL_time_t, UTIL_getTime */
+#include "mem.h"
+#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still test some deprecated functions */
+#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 "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 */
+#include "external_matchfinder.h" /* zstreamSequenceProducer, EMF_testCase */
+
+/*-************************************
+ * 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, int bigTests)
+{
+ 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();
+ ZSTD_CCtx* mtctx = ZSTD_createCCtx();
+
+ 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 || !mtctx) {
+ DISPLAY("Not enough memory, aborting \n");
+ goto _output_error;
+ }
+ RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed);
+
+ CHECK_Z(ZSTD_CCtx_setParameter(mtctx, ZSTD_c_nbWorkers, 2));
+
+ /* 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_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_loadDictionary(zc, CNBuffer, dictSize) );
+ 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 with ZSTD_initCStream_advanced : ", 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");
+
+ /* check decompression fails early if first bytes are wrong */
+ DISPLAYLEVEL(3, "test%3i : early decompression error if first bytes are incorrect : ", testNb++);
+ { const char buf[3] = { 0 }; /* too short, not enough to start decoding header */
+ ZSTD_inBuffer inb = { buf, sizeof(buf), 0 };
+ size_t const remaining = ZSTD_decompressStream(zd, &outBuff, &inb);
+ if (!ZSTD_isError(remaining)) goto _output_error; /* should have errored out immediately (note: this does not test the exact error code) */
+ }
+ 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 output and NULL input : ", 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");
+
+ DISPLAYLEVEL(3, "test%3i : NULL output buffer with non-NULL input : ", testNb++);
+ {
+ const char* test = "aa";
+ inBuff.src = test;
+ inBuff.size = 2;
+ 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) );
+ CHECK_Z(ZSTD_decompressStream(zd, &outBuff, &inBuff));
+ }
+
+ DISPLAYLEVEL(3, "OK\n");
+ /* _srcSize compression test */
+ DISPLAYLEVEL(3, "test%3i : compress_srcSize %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, 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);
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, 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);
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_refCDict(zc, NULL) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 1) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, 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);
+ { CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_contentSizeFlag, 0) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, 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));
+ } }
+
+ /* Compression state 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 ");
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 19) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, inSize) );
+ 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 ");
+ if (ZSTD_endStream(zc, &outBuff) != 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 ");
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, 19) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, inSize) );
+ 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 ");
+ if (ZSTD_endStream(zc, &outBuff) != 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);
+ }
+
+ /* Compression with ZSTD_c_stable{In,Out}Buffer */
+ { ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_inBuffer in;
+ ZSTD_outBuffer out;
+ size_t cctxSize1;
+ size_t cctxSize2;
+ assert(cctx != NULL);
+ in.src = CNBuffer;
+ in.size = CNBufferSize;
+ out.dst = compressedBuffer;
+ out.size = compressedBufferSize;
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress2() uses stable input and output : ", testNb++);
+ CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize));
+ CHECK(!(cSize < ZSTD_compressBound(CNBufferSize)), "cSize too large for test");
+ CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, cSize + 4, CNBuffer, CNBufferSize));
+ CHECK_Z(cctxSize1 = ZSTD_sizeof_CCtx(cctx));
+ /* @cctxSize2 : sizeof_CCtx when doing full streaming (no stable in/out) */
+ { ZSTD_CCtx* const cctx2 = ZSTD_createCCtx();
+ assert(cctx2 != NULL);
+ in.pos = out.pos = 0;
+ CHECK_Z(ZSTD_compressStream2(cctx2, &out, &in, ZSTD_e_continue));
+ CHECK(!(ZSTD_compressStream2(cctx2, &out, &in, ZSTD_e_end) == 0), "Not finished");
+ CHECK_Z(cctxSize2 = ZSTD_sizeof_CCtx(cctx2));
+ ZSTD_freeCCtx(cctx2);
+ }
+ /* @cctxSize1 : sizeof_CCtx when doing single-shot compression (no streaming) */
+ { ZSTD_CCtx* const cctx1 = ZSTD_createCCtx();
+ ZSTD_parameters params = ZSTD_getParams(0, CNBufferSize, 0);
+ size_t cSize3;
+ assert(cctx1 != NULL);
+ params.fParams.checksumFlag = 1;
+ cSize3 = ZSTD_compress_advanced(cctx1, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize, NULL, 0, params);
+ CHECK_Z(cSize3);
+ CHECK(!(cSize == cSize3), "Must be same compressed size");
+ CHECK(!(cctxSize1 == ZSTD_sizeof_CCtx(cctx1)), "Must be same CCtx size");
+ ZSTD_freeCCtx(cctx1);
+ }
+ CHECK(!(cctxSize1 < cctxSize2), "Stable buffers means less allocated size");
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compress2() doesn't modify user parameters : ", testNb++);
+ { int stableInBuffer;
+ int stableOutBuffer;
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableInBuffer, &stableInBuffer));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableOutBuffer, &stableOutBuffer));
+ CHECK(!(stableInBuffer == 0), "Modified");
+ CHECK(!(stableOutBuffer == 0), "Modified");
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableOutBuffer, 1));
+ CHECK_Z(cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBufferSize));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableInBuffer, &stableInBuffer));
+ CHECK_Z(ZSTD_CCtx_getParameter(cctx, ZSTD_c_stableOutBuffer, &stableOutBuffer));
+ CHECK(!(stableInBuffer == 1), "Modified");
+ CHECK(!(stableOutBuffer == 1), "Modified");
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableInBuffer and ZSTD_c_stableOutBuffer : ", testNb++);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableOutBuffer, 1));
+ in.pos = out.pos = 0;
+ CHECK(!(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) == 0), "Not finished");
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableInBuffer and ZSTD_c_stableOutBuffer allocated size : ", testNb++);
+ { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
+ CHECK(!(cctxSize1 == cctxSize), "Must be the same size as single pass");
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableInBuffer only : ", testNb++);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1));
+ in.pos = out.pos = 0;
+ out.size = cSize / 4;
+ for (;;) {
+ size_t const ret = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
+ CHECK_Z(ret);
+ if (ret == 0)
+ break;
+ out.size = MIN(out.size + cSize / 4, compressedBufferSize);
+ }
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableInBuffer modify buffer : ", testNb++);
+ in.pos = out.pos = 0;
+ out.size = cSize / 4;
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end));
+ in.src = (char const*)in.src + in.pos;
+ in.size -= in.pos;
+ in.pos = 0;
+ { size_t const ret = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end);
+ CHECK(!ZSTD_isError(ret), "Must error");
+ CHECK(!(ZSTD_getErrorCode(ret) == ZSTD_error_stabilityCondition_notRespected), "Must be this error");
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* stableSrc + streaming */
+ DISPLAYLEVEL(3, "test%3i : ZSTD_c_stableInBuffer compatibility with compressStream, flushStream and endStream : ", testNb++);
+ CHECK_Z( ZSTD_initCStream(cctx, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1) );
+ { ZSTD_inBuffer inBuf;
+ ZSTD_outBuffer outBuf;
+ const size_t nonZeroStartPos = 18;
+ const size_t inputSize = 500;
+ inBuf.src = CNBuffer;
+ inBuf.size = 100;
+ inBuf.pos = nonZeroStartPos;
+ outBuf.dst = (char*)(compressedBuffer)+cSize;
+ outBuf.size = ZSTD_compressBound(inputSize);
+ outBuf.pos = 0;
+ CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
+ inBuf.size = 200;
+ CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
+ CHECK_Z( ZSTD_flushStream(cctx, &outBuf) );
+ inBuf.size = nonZeroStartPos + inputSize;
+ CHECK_Z( ZSTD_compressStream(cctx, &outBuf, &inBuf) );
+ CHECK(ZSTD_endStream(cctx, &outBuf) != 0, "compression should be successful and fully flushed");
+ { const void* const realSrcStart = (const char*)inBuf.src + nonZeroStartPos;
+ void* const verifBuf = (char*)outBuf.dst + outBuf.pos;
+ const size_t decSize = ZSTD_decompress(verifBuf, inputSize, outBuf.dst, outBuf.pos);
+ CHECK_Z(decSize);
+ CHECK(decSize != inputSize, "regenerated %zu bytes, instead of %zu", decSize, inputSize);
+ CHECK(memcmp(realSrcStart, verifBuf, inputSize) != 0, "regenerated data different from original");
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* stableSrc + streaming */
+ DISPLAYLEVEL(3, "test%3i : ZSTD_c_stableInBuffer compatibility with compressStream2, using different end directives : ", testNb++);
+ CHECK_Z( ZSTD_initCStream(cctx, 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableInBuffer, 1) );
+ { ZSTD_inBuffer inBuf;
+ ZSTD_outBuffer outBuf;
+ const size_t nonZeroStartPos = 18;
+ const size_t inputSize = 500;
+ inBuf.src = CNBuffer;
+ inBuf.size = 100;
+ inBuf.pos = nonZeroStartPos;
+ outBuf.dst = (char*)(compressedBuffer)+cSize;
+ outBuf.size = ZSTD_compressBound(inputSize);
+ outBuf.pos = 0;
+ CHECK_Z( ZSTD_compressStream2(cctx, &outBuf, &inBuf, ZSTD_e_continue) );
+ inBuf.size = 200;
+ CHECK_Z( ZSTD_compressStream2(cctx, &outBuf, &inBuf, ZSTD_e_continue) );
+ CHECK_Z( ZSTD_compressStream2(cctx, &outBuf, &inBuf, ZSTD_e_flush) );
+ inBuf.size = nonZeroStartPos + inputSize;
+ CHECK_Z( ZSTD_compressStream2(cctx, &outBuf, &inBuf, ZSTD_e_continue) );
+ CHECK( ZSTD_compressStream2(cctx, &outBuf, &inBuf, ZSTD_e_end) != 0, "compression should be successful and fully flushed");
+ { const void* const realSrcStart = (const char*)inBuf.src + nonZeroStartPos;
+ void* const verifBuf = (char*)outBuf.dst + outBuf.pos;
+ const size_t decSize = ZSTD_decompress(verifBuf, inputSize, outBuf.dst, outBuf.pos);
+ CHECK_Z(decSize);
+ CHECK(decSize != inputSize, "regenerated %zu bytes, instead of %zu", decSize, inputSize);
+ CHECK(memcmp(realSrcStart, verifBuf, inputSize) != 0, "regenerated data different from original");
+ } }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableInBuffer: context size : ", testNb++);
+ { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
+ DISPLAYLEVEL(4, "cctxSize1=%zu; cctxSize=%zu; cctxSize2=%zu : ", cctxSize1, cctxSize, cctxSize2);
+ CHECK(!(cctxSize1 < cctxSize), "Must be bigger than single-pass");
+ CHECK(!(cctxSize < cctxSize2), "Must be smaller than streaming");
+ cctxSize1 = cctxSize;
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableOutBuffer only : ", testNb++);
+ CHECK_Z(ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_stableOutBuffer, 1));
+ in.src = CNBuffer;
+ in.pos = out.pos = 0;
+ in.size = MIN(CNBufferSize, 10);
+ out.size = compressedBufferSize;
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_flush));
+ in.pos = 0;
+ in.size = CNBufferSize - in.size;
+ CHECK(!(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) == 0), "Not finished");
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, out.pos));
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableOutBuffer modify buffer : ", testNb++);
+ in.pos = out.pos = 0;
+ in.size = CNBufferSize;
+ CHECK_Z(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue));
+ in.pos = out.pos = 0;
+ { size_t const ret = ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue);
+ CHECK(!ZSTD_isError(ret), "Must have errored");
+ CHECK(!(ZSTD_getErrorCode(ret) == ZSTD_error_stabilityCondition_notRespected), "Must be this error");
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() with ZSTD_c_stableOutBuffer: context size : ", testNb++);
+ { size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
+ DISPLAYLEVEL(4, "cctxSize1=%zu; cctxSize=%zu; cctxSize2=%zu : ", cctxSize1, cctxSize, cctxSize2);
+ CHECK(!(cctxSize1 < cctxSize), "Must be bigger than single-pass and stableInBuffer");
+ CHECK(!(cctxSize < cctxSize2), "Must be smaller than streaming");
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ ZSTD_freeCCtx(cctx);
+ }
+
+ /* 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 persist 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 persist 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 persist 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 persist 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 with ZSTD_initCStream_advanced : ", 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;
+
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, ZSTD_CONTENTSIZE_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);
+ { int jobSize;
+ CHECK_Z( ZSTD_CCtx_getParameter(mtctx, ZSTD_c_jobSize, &jobSize));
+ CHECK(jobSize != 0, "job size non-zero");
+ CHECK_Z( ZSTD_CCtx_getParameter(mtctx, ZSTD_c_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 = ZSTD_compressStream2(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");
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(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");
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(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");
+
+ DISPLAYLEVEL(3, "test%3i : ZSTD_lazy compress with hashLog = 29 and searchLog = 4 : ", testNb++);
+ if (MEM_64bits()) {
+ ZSTD_outBuffer out = { compressedBuffer, compressedBufferSize, 0 };
+ ZSTD_inBuffer in = { CNBuffer, CNBufferSize, 0 };
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_strategy, ZSTD_lazy));
+ /* Force enable the row based match finder */
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_useRowMatchFinder, ZSTD_ps_enable));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_searchLog, 4));
+ /* Set windowLog to 29 so the hashLog doesn't get sized down */
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_windowLog, 29));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_hashLog, 29));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1));
+ /* Compress with continue first so the hashLog doesn't get sized down */
+ CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_continue));
+ CHECK_Z(ZSTD_compressStream2(zc, &out, &in, ZSTD_e_end));
+ cSize = out.pos;
+ CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ DISPLAYLEVEL(3, "test%3i : Test offset == windowSize : ", testNb++);
+ {
+ int windowLog;
+ int const kMaxWindowLog = bigTests ? 29 : 26;
+ size_t const kNbSequences = 10000;
+ size_t const kMaxSrcSize = (1u << kMaxWindowLog) + 10 * kNbSequences;
+ char* src = calloc(kMaxSrcSize, 1);
+ ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences);
+ for (windowLog = ZSTD_WINDOWLOG_MIN; windowLog <= kMaxWindowLog; ++windowLog) {
+ size_t const srcSize = ((size_t)1 << windowLog) + 10 * (kNbSequences - 1);
+
+ sequences[0].offset = 32;
+ sequences[0].litLength = 32;
+ sequences[0].matchLength = (1u << windowLog) - 32;
+ sequences[0].rep = 0;
+ {
+ size_t i;
+ for (i = 1; i < kNbSequences; ++i) {
+ sequences[i].offset = (1u << windowLog) - (FUZ_rand(&seed) % 8);
+ sequences[i].litLength = FUZ_rand(&seed) & 7;
+ sequences[i].matchLength = 10 - sequences[i].litLength;
+ sequences[i].rep = 0;
+ }
+ }
+
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_minMatch, 3));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_validateSequences, 1));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_windowLog, windowLog));
+ assert(srcSize <= kMaxSrcSize);
+ cSize = ZSTD_compressSequences(zc, compressedBuffer, compressedBufferSize, sequences, kNbSequences, src, srcSize);
+ CHECK_Z(cSize);
+ CHECK_Z(ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters));
+ CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_windowLogMax, windowLog))
+ {
+ ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
+ size_t decompressedBytes = 0;
+ for (;;) {
+ ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0};
+ size_t const ret = ZSTD_decompressStream(zd, &out, &in);
+ CHECK_Z(ret);
+ CHECK(decompressedBytes + out.pos > srcSize, "Output too large");
+ CHECK(memcmp(out.dst, src + decompressedBytes, out.pos), "Corrupted");
+ decompressedBytes += out.pos;
+ if (ret == 0) {
+ break;
+ }
+ }
+ CHECK(decompressedBytes != srcSize, "Output wrong size");
+ }
+ }
+ free(sequences);
+ free(src);
+ }
+ 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");
+
+ DISPLAYLEVEL(3, "test%3i : Block-Level External Sequence Producer API: ", testNb++);
+ {
+ size_t const dstBufSize = ZSTD_compressBound(CNBufferSize);
+ BYTE* const dstBuf = (BYTE*)malloc(ZSTD_compressBound(dstBufSize));
+ size_t const checkBufSize = CNBufferSize;
+ BYTE* const checkBuf = (BYTE*)malloc(checkBufSize);
+ int enableFallback;
+ EMF_testCase sequenceProducerState;
+
+ CHECK(dstBuf == NULL || checkBuf == NULL, "allocation failed");
+
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+
+ /* Reference external matchfinder outside the test loop to
+ * check that the reference is preserved across compressions */
+ ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer);
+
+ for (enableFallback = 0; enableFallback <= 1; enableFallback++) {
+ size_t testCaseId;
+ size_t const numTestCases = 9;
+
+ EMF_testCase const testCases[] = {
+ EMF_ONE_BIG_SEQ,
+ EMF_LOTS_OF_SEQS,
+ EMF_ZERO_SEQS,
+ EMF_BIG_ERROR,
+ EMF_SMALL_ERROR,
+ EMF_INVALID_OFFSET,
+ EMF_INVALID_MATCHLEN,
+ EMF_INVALID_LITLEN,
+ EMF_INVALID_LAST_LITS
+ };
+
+ ZSTD_ErrorCode const errorCodes[] = {
+ ZSTD_error_no_error,
+ ZSTD_error_no_error,
+ ZSTD_error_sequenceProducer_failed,
+ ZSTD_error_sequenceProducer_failed,
+ ZSTD_error_sequenceProducer_failed,
+ ZSTD_error_externalSequences_invalid,
+ ZSTD_error_externalSequences_invalid,
+ ZSTD_error_externalSequences_invalid,
+ ZSTD_error_externalSequences_invalid
+ };
+
+ for (testCaseId = 0; testCaseId < numTestCases; testCaseId++) {
+ size_t res;
+
+ int const compressionShouldSucceed = (
+ (errorCodes[testCaseId] == ZSTD_error_no_error) ||
+ (enableFallback && errorCodes[testCaseId] == ZSTD_error_sequenceProducer_failed)
+ );
+
+ int const testWithSequenceValidation = (
+ testCases[testCaseId] == EMF_INVALID_OFFSET
+ );
+
+ sequenceProducerState = testCases[testCaseId];
+
+ ZSTD_CCtx_reset(zc, ZSTD_reset_session_only);
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_validateSequences, testWithSequenceValidation));
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, enableFallback));
+ res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize);
+
+ if (compressionShouldSucceed) {
+ CHECK(ZSTD_isError(res), "EMF: Compression error: %s", ZSTD_getErrorName(res));
+ CHECK_Z(ZSTD_decompress(checkBuf, checkBufSize, dstBuf, res));
+ CHECK(memcmp(CNBuffer, checkBuf, CNBufferSize) != 0, "EMF: Corruption!");
+ } else {
+ CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!");
+ CHECK(
+ ZSTD_getErrorCode(res) != errorCodes[testCaseId],
+ "EMF: Wrong error code: %s", ZSTD_getErrorName(res)
+ );
+ }
+ }
+
+ /* Test compression with external matchfinder + empty src buffer */
+ {
+ size_t res;
+ sequenceProducerState = EMF_ZERO_SEQS;
+ ZSTD_CCtx_reset(zc, ZSTD_reset_session_only);
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, enableFallback));
+ res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, 0);
+ CHECK(ZSTD_isError(res), "EMF: Compression error: %s", ZSTD_getErrorName(res));
+ CHECK(ZSTD_decompress(checkBuf, checkBufSize, dstBuf, res) != 0, "EMF: Empty src round trip failed!");
+ }
+ }
+
+ /* Test that reset clears the external matchfinder */
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+ sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder wasn't cleared */
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0));
+ CHECK_Z(ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize));
+
+ /* Test that registering mFinder == NULL clears the external matchfinder */
+ ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters);
+ ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer);
+ sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder wasn't cleared */
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0));
+ ZSTD_registerSequenceProducer(zc, NULL, NULL); /* clear the external matchfinder */
+ CHECK_Z(ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize));
+
+ /* Test that external matchfinder doesn't interact with older APIs */
+ ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters);
+ ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer);
+ sequenceProducerState = EMF_BIG_ERROR; /* ensure zstd will fail if the matchfinder is used */
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableSeqProducerFallback, 0));
+ CHECK_Z(ZSTD_compressCCtx(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize, 3));
+
+ /* Test that compression returns the correct error with LDM */
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+ {
+ size_t res;
+ ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer);
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
+ res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize);
+ CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!");
+ CHECK(
+ ZSTD_getErrorCode(res) != ZSTD_error_parameter_combination_unsupported,
+ "EMF: Wrong error code: %s", ZSTD_getErrorName(res)
+ );
+ }
+
+#ifdef ZSTD_MULTITHREAD
+ /* Test that compression returns the correct error with nbWorkers > 0 */
+ CHECK_Z(ZSTD_CCtx_reset(zc, ZSTD_reset_session_and_parameters));
+ {
+ size_t res;
+ ZSTD_registerSequenceProducer(zc, &sequenceProducerState, zstreamSequenceProducer);
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, 1));
+ res = ZSTD_compress2(zc, dstBuf, dstBufSize, CNBuffer, CNBufferSize);
+ CHECK(!ZSTD_isError(res), "EMF: Should have raised an error!");
+ CHECK(
+ ZSTD_getErrorCode(res) != ZSTD_error_parameter_combination_unsupported,
+ "EMF: Wrong error code: %s", ZSTD_getErrorName(res)
+ );
+ }
+#endif
+
+ free(dstBuf);
+ free(checkBuf);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ /* Test maxBlockSize cctx param functionality */
+ DISPLAYLEVEL(3, "test%3i : Testing maxBlockSize PR#3418: ", testNb++);
+ {
+ ZSTD_CCtx* cctx = ZSTD_createCCtx();
+
+ /* Quick test to make sure maxBlockSize bounds are enforced */
+ assert(ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX_MIN - 1)));
+ assert(ZSTD_isError(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX + 1)));
+
+ /* Test maxBlockSize < windowSize and windowSize < maxBlockSize*/
+ {
+ size_t srcSize = 2 << 10;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst1 = compressedBuffer;
+ void* const dst2 = (BYTE*)compressedBuffer + dstSize;
+ size_t size1, size2;
+ void* const checkBuf = malloc(srcSize);
+ memset(src, 'x', srcSize);
+
+ /* maxBlockSize = 1KB */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 1u << 10));
+ size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size1)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ /* maxBlockSize = 3KB */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 3u << 10));
+ size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size2)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ assert(size1 - size2 == 4); /* We add another RLE block with header + character */
+ assert(memcmp(dst1, dst2, size2) != 0); /* Compressed output should not be equal */
+
+ /* maxBlockSize = 1KB, windowLog = 10 */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 1u << 10));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 10));
+ size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size1)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ /* maxBlockSize = 3KB, windowLog = 10 */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 3u << 10));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_windowLog, 10));
+ size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size2)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ assert(size1 == size2);
+ assert(memcmp(dst1, dst2, size1) == 0); /* Compressed output should be equal */
+
+ free(checkBuf);
+ }
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+
+ /* Test maxBlockSize = 0 is valid */
+ { size_t srcSize = 256 << 10;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst1 = compressedBuffer;
+ void* const dst2 = (BYTE*)compressedBuffer + dstSize;
+ size_t size1, size2;
+ void* const checkBuf = malloc(srcSize);
+
+ /* maxBlockSize = 0 */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 0));
+ size1 = ZSTD_compress2(cctx, dst1, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size1)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst1, size1));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ /* maxBlockSize = ZSTD_BLOCKSIZE_MAX */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, ZSTD_BLOCKSIZE_MAX));
+ size2 = ZSTD_compress2(cctx, dst2, dstSize, src, srcSize);
+
+ if (ZSTD_isError(size2)) goto _output_error;
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst2, size2));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ assert(size1 == size2);
+ assert(memcmp(dst1, dst2, size1) == 0); /* Compressed output should be equal */
+ free(checkBuf);
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+ /* Test Sequence Validation */
+ DISPLAYLEVEL(3, "test%3i : Testing sequence validation: ", testNb++);
+ {
+ ZSTD_CCtx* cctx = ZSTD_createCCtx();
+
+ /* Test minMatch >= 4, matchLength < 4 */
+ {
+ size_t srcSize = 11;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst = compressedBuffer;
+ size_t const kNbSequences = 4;
+ ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences);
+
+ memset(src, 'x', srcSize);
+
+ sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0};
+ sequences[1] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[2] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[3] = (ZSTD_Sequence) {0, 1, 0, 0};
+
+ /* Test with sequence validation */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1));
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */
+ CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+
+ /* Test without sequence validation */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 0));
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */
+ CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */
+
+ free(sequences);
+ }
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+
+
+ /* Test with no block delim */
+ {
+ size_t srcSize = 4;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst = compressedBuffer;
+ size_t const kNbSequences = 1;
+ ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences);
+ void* const checkBuf = malloc(srcSize);
+
+ memset(src, 'x', srcSize);
+
+ sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0};
+
+ /* Test with sequence validation */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 3));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_noBlockDelimiters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1));
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(ZSTD_isError(cSize), "Should not throw an error");
+ CHECK_Z(ZSTD_decompress(checkBuf, srcSize, dst, cSize));
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+
+ free(sequences);
+ free(checkBuf);
+ }
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+
+ { /* Test case with two additional sequences */
+ size_t srcSize = 19;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst = compressedBuffer;
+ size_t const kNbSequences = 7;
+ ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences);
+
+ memset(src, 'x', srcSize);
+
+ sequences[0] = (ZSTD_Sequence) {1, 1, 3, 0};
+ sequences[1] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[2] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[3] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[4] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[5] = (ZSTD_Sequence) {1, 0, 3, 0};
+ sequences[6] = (ZSTD_Sequence) {0, 0, 0, 0};
+
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 1));
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */
+ CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */
+
+ ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
+
+ /* Test without sequence validation */
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_minMatch, 5));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_blockDelimiters, ZSTD_sf_explicitBlockDelimiters));
+ CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_validateSequences, 0));
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(!ZSTD_isError(cSize), "Should throw an error"); /* maxNbSeq is too small and an assert will fail */
+ CHECK(ZSTD_getErrorCode(cSize) != ZSTD_error_externalSequences_invalid, "Wrong error code: %s", ZSTD_getErrorName(cSize)); /* fails sequence validation */
+
+ free(sequences);
+ }
+ ZSTD_freeCCtx(cctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+
+ DISPLAYLEVEL(3, "test%3i : Testing large offset with small window size: ", testNb++);
+ {
+ ZSTD_CCtx* cctx = ZSTD_createCCtx();
+ ZSTD_DCtx* dctx = ZSTD_createDCtx();
+
+ /* Test large offset, small window size*/
+ {
+ size_t srcSize = 21;
+ void* const src = CNBuffer;
+ size_t dstSize = ZSTD_compressBound(srcSize);
+ void* const dst = compressedBuffer;
+ size_t const kNbSequences = 4;
+ ZSTD_Sequence* sequences = malloc(sizeof(ZSTD_Sequence) * kNbSequences);
+ void* const checkBuf = malloc(srcSize);
+ const size_t largeDictSize = 1 << 25;
+ ZSTD_CDict* cdict = NULL;
+ ZSTD_DDict* ddict = NULL;
+
+ /* Generate large dictionary */
+ void* dictBuffer = calloc(largeDictSize, 1);
+ ZSTD_compressionParameters cParams = ZSTD_getCParams(1, srcSize, largeDictSize);
+ cParams.minMatch = ZSTD_MINMATCH_MIN;
+ cParams.hashLog = ZSTD_HASHLOG_MIN;
+ cParams.chainLog = ZSTD_CHAINLOG_MIN;
+
+ cdict = ZSTD_createCDict_advanced(dictBuffer, largeDictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent, cParams, ZSTD_defaultCMem);
+ ddict = ZSTD_createDDict_advanced(dictBuffer, largeDictSize, ZSTD_dlm_byRef, ZSTD_dct_rawContent, ZSTD_defaultCMem);
+
+ ZSTD_CCtx_refCDict(cctx, cdict);
+ ZSTD_DCtx_refDDict(dctx, ddict);
+
+ sequences[0] = (ZSTD_Sequence) {3, 3, 3, 0};
+ sequences[1] = (ZSTD_Sequence) {1 << 25, 0, 3, 0};
+ sequences[2] = (ZSTD_Sequence) {1 << 25, 0, 9, 0};
+ sequences[3] = (ZSTD_Sequence) {3, 0, 3, 0};
+
+ cSize = ZSTD_compressSequences(cctx, dst, dstSize,
+ sequences, kNbSequences,
+ src, srcSize);
+
+ CHECK(ZSTD_isError(cSize), "Should not throw an error");
+
+ {
+ size_t dSize = ZSTD_decompressDCtx(dctx, checkBuf, srcSize, dst, cSize);
+ CHECK(ZSTD_isError(dSize), "Should not throw an error");
+ CHECK(memcmp(src, checkBuf, srcSize) != 0, "Corruption!");
+ }
+
+ free(sequences);
+ free(checkBuf);
+ free(dictBuffer);
+ ZSTD_freeCDict(cdict);
+ ZSTD_freeDDict(ddict);
+ }
+ ZSTD_freeCCtx(cctx);
+ ZSTD_freeDCtx(dctx);
+ }
+ DISPLAYLEVEL(3, "OK \n");
+
+_end:
+ FUZ_freeDictionary(dictionary);
+ ZSTD_freeCStream(zc);
+ ZSTD_freeDStream(zd);
+ ZSTD_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) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize;
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(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;
+ CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_compressionLevel, cLevel) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_checksumFlag, FUZ_rand(&lseed) & 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_contentSizeFlag, FUZ_rand(&lseed) & 1) );
+ CHECK_Z( ZSTD_CCtx_setParameter(zc, ZSTD_c_dictIDFlag, FUZ_rand(&lseed) & 1) );
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
+ CHECK_Z( ZSTD_CCtx_loadDictionary(zc, dict, dictSize) );
+ } }
+
+ /* multi-segments compression test */
+ XXH64_reset(&xxhState, 0);
+ { ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
+ cSize=0;
+ totalTestSize=0;
+ while(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);
+ 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;
+}
+
+/** 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;
+ int isRefPrefix = 0;
+ U64 pledgedSrcSize = ZSTD_CONTENTSIZE_UNKNOWN;
+
+ /* 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;
+ }
+ 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_randomClampedLength(&lseed, ZSTD_ps_auto, ZSTD_ps_disable), 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) );
+ } else {
+ pledgedSrcSize = ZSTD_CONTENTSIZE_UNKNOWN;
+ }
+
+ /* 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. */
+ {
+ int const rsyncable = (FUZ_rand(&lseed) % 4 == 0);
+ DISPLAYLEVEL(5, "t%u: rsyncable : %d \n", testNb, rsyncable);
+ setCCtxParameter(zc, cctxParams, ZSTD_c_rsyncable, rsyncable, opaqueAPI);
+ }
+
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_forceMaxWindow, FUZ_rand(&lseed) & 1, opaqueAPI) );
+ if (FUZ_rand(&lseed) & 1) CHECK_Z( setCCtxParameter(zc, cctxParams, ZSTD_c_deterministicRefPrefix, 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 {
+ isRefPrefix = 1;
+ CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) );
+ }
+ } }
+
+ CHECK_Z(getCCtxParams(zc, &savedParams));
+
+ /* multi-segments compression test */
+ { int iter;
+ int const startSeed = lseed;
+ XXH64_hash_t compressedCrcs[2];
+ for (iter = 0; iter < 2; ++iter, lseed = startSeed) {
+ ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
+ int const singlePass = (FUZ_rand(&lseed) & 3) == 0;
+ int nbWorkers;
+
+ XXH64_reset(&xxhState, 0);
+
+ CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
+ if (isRefPrefix) {
+ DISPLAYLEVEL(6, "t%u: Reloading prefix\n", testNb);
+ /* Need to reload the prefix because it gets dropped after one compression */
+ CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) );
+ }
+
+ /* Adjust number of workers occasionally - result must be deterministic independent of nbWorkers */
+ CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_nbWorkers, &nbWorkers));
+ if (nbWorkers > 0 && (FUZ_rand(&lseed) & 7) == 0) {
+ DISPLAYLEVEL(6, "t%u: Modify nbWorkers: %d -> %d \n", testNb, nbWorkers, nbWorkers + iter);
+ CHECK_Z(ZSTD_CCtx_setParameter(zc, ZSTD_c_nbWorkers, nbWorkers + iter));
+ }
+
+ if (singlePass) {
+ ZSTD_inBuffer inBuff = { srcBuffer, maxTestSize, 0 };
+ CHECK_Z(ZSTD_compressStream2(zc, &outBuff, &inBuff, ZSTD_e_end));
+ DISPLAYLEVEL(6, "t%u: Single pass compression: consumed %u bytes ; produced %u bytes \n",
+ testNb, (unsigned)inBuff.pos, (unsigned)outBuff.pos);
+ CHECK(inBuff.pos != inBuff.size, "Input not consumed!");
+ crcOrig = XXH64(srcBuffer, maxTestSize, 0);
+ totalTestSize = maxTestSize;
+ } else {
+ outBuff.size = 0;
+ for (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);
+ ZSTD_EndDirective const flush = (FUZ_rand(&lseed) & 15) ? ZSTD_e_continue : ZSTD_e_flush;
+ ZSTD_inBuffer inBuff = { srcBuffer+srcStart, srcSize, 0 };
+ int forwardProgress;
+ do {
+ size_t const ipos = inBuff.pos;
+ size_t const opos = outBuff.pos;
+ size_t ret;
+ if (outBuff.pos == outBuff.size) {
+ size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog+1);
+ size_t const dstBuffSize = MIN(cBufferSize - outBuff.pos, randomDstSize);
+ outBuff.size = outBuff.pos + dstBuffSize;
+ }
+ CHECK_Z( ret = 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);
+
+ /* We've completed the flush */
+ if (flush == ZSTD_e_flush && ret == 0)
+ break;
+
+ /* Ensure maximal forward progress for determinism */
+ forwardProgress = (inBuff.pos != ipos) || (outBuff.pos != opos);
+ } while (forwardProgress);
+ assert(inBuff.pos == inBuff.size);
+
+ 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 - outBuff.pos, randomDstSize);
+ outBuff.size = outBuff.pos + adjustedDstSize;
+ DISPLAYLEVEL(6, "t%u: End-flush into dst buffer of size %u \n", testNb, (unsigned)adjustedDstSize);
+ /* ZSTD_e_end guarantees maximal forward progress */
+ 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;
+ compressedCrcs[iter] = XXH64(cBuffer, cSize, 0);
+ DISPLAYLEVEL(5, "Frame completed : %zu bytes \n", cSize);
+ }
+ CHECK(!(compressedCrcs[0] == compressedCrcs[1]), "Compression is not deterministic!");
+ }
+
+ CHECK(badParameters(zc, savedParams), "CCtx params are wrong");
+
+ /* multi - fragments decompression test */
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z(ZSTD_DCtx_reset(zd, ZSTD_reset_session_and_parameters));
+ }
+ if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
+ DISPLAYLEVEL(5, "resetting DCtx (dict:%p) \n", (void const*)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) );
+ }
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z(ZSTD_DCtx_setParameter(zd, ZSTD_d_disableHuffmanAssembly, FUZ_rand(&lseed) & 1));
+ }
+ { 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 */
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z(ZSTD_DCtx_reset(zd_noise, ZSTD_reset_session_and_parameters));
+ } else {
+ CHECK_Z(ZSTD_DCtx_reset(zd_noise, ZSTD_reset_session_only));
+ }
+ if (FUZ_rand(&lseed) & 1) {
+ CHECK_Z(ZSTD_DCtx_setParameter(zd_noise, ZSTD_d_disableHuffmanAssembly, FUZ_rand(&lseed) & 1));
+ }
+ { 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, 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, "--newapi")) { selected_api=advanced_api; testNb += !testNb; continue; }
+ if (!strcmp(argument, "--no-big-tests")) { bigTests=0; continue; }
+ if (!strcmp(argument, "--big-tests")) { bigTests=1; 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, bigTests); /* constant seed for predictability */
+ }
+
+ if (!result) {
+ switch(selected_api)
+ {
+ case simple_api :
+ result = fuzzerTests(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;
+}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff