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fuzzer.c
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fuzzer.c
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/*
* 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 : 4204) /* disable: C4204: non-constant aggregate initializer */
#endif
/*-************************************
* Includes
**************************************/
#include <stdlib.h> /* free */
#include <stdio.h> /* fgets, sscanf */
#include <string.h> /* strcmp */
#include <time.h> /* time(), time_t */
#undef NDEBUG /* always enable assert() */
#include <assert.h>
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressContinue, ZSTD_compressBlock */
#include "debug.h" /* DEBUG_STATIC_ASSERT */
#include "fse.h"
#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still test some deprecated functions */
#include "zstd.h" /* ZSTD_VERSION_STRING */
#include "zstd_errors.h" /* ZSTD_getErrorCode */
#define ZDICT_STATIC_LINKING_ONLY
#include "zdict.h" /* ZDICT_trainFromBuffer */
#include "mem.h"
#include "datagen.h" /* RDG_genBuffer */
#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
#include "xxhash.h" /* XXH64 */
#include "util.h"
#include "timefn.h" /* SEC_TO_MICRO, UTIL_time_t, UTIL_TIME_INITIALIZER, UTIL_clockSpanMicro, UTIL_getTime */
/* must be included after util.h, due to ERROR macro redefinition issue on Visual Studio */
#include "zstd_internal.h" /* ZSTD_WORKSPACETOOLARGE_MAXDURATION, ZSTD_WORKSPACETOOLARGE_FACTOR, KB, MB */
#include "threading.h" /* ZSTD_pthread_create, ZSTD_pthread_join */
/*-************************************
* Constants
**************************************/
#define GB *(1U<<30)
static const int FUZ_compressibility_default = 50;
static const int nbTestsDefault = 30000;
/*-************************************
* Display Macros
**************************************/
#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
static U32 g_displayLevel = 2;
static const U64 g_refreshRate = SEC_TO_MICRO / 6;
static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
#define DISPLAYUPDATE(l, ...) \
if (g_displayLevel>=l) { \
if ((UTIL_clockSpanMicro(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
{ g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \
if (g_displayLevel>=4) fflush(stderr); } \
}
/*-*******************************************************
* Compile time test
*********************************************************/
#undef MIN
#undef MAX
/* Declaring the function, to avoid -Wmissing-prototype */
void FUZ_bug976(void);
void FUZ_bug976(void)
{ /* these constants shall not depend on MIN() macro */
DEBUG_STATIC_ASSERT(ZSTD_HASHLOG_MAX < 31);
DEBUG_STATIC_ASSERT(ZSTD_CHAINLOG_MAX < 31);
}
/*-*******************************************************
* Internal functions
*********************************************************/
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
#define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
static U32 FUZ_rand(U32* src)
{
static const U32 prime1 = 2654435761U;
static const U32 prime2 = 2246822519U;
U32 rand32 = *src;
rand32 *= prime1;
rand32 += prime2;
rand32 = FUZ_rotl32(rand32, 13);
*src = rand32;
return rand32 >> 5;
}
static U32 FUZ_highbit32(U32 v32)
{
unsigned nbBits = 0;
if (v32==0) return 0;
while (v32) v32 >>= 1, nbBits++;
return nbBits;
}
/*=============================================
* Test macros
=============================================*/
#define CHECK(fn) { if(!(fn)) { DISPLAYLEVEL(1, "Error : test (%s) failed \n", #fn); exit(1); } }
#define CHECK_Z(f) { \
size_t const err = f; \
if (ZSTD_isError(err)) { \
DISPLAY("Error => %s : %s ", \
#f, ZSTD_getErrorName(err)); \
exit(1); \
} }
#define CHECK_VAR(var, fn) var = fn; if (ZSTD_isError(var)) { DISPLAYLEVEL(1, "%s : fails : %s \n", #fn, ZSTD_getErrorName(var)); exit(1); }
#define CHECK_NEWV(var, fn) size_t const CHECK_VAR(var, fn)
#define CHECKPLUS(var, fn, more) { CHECK_NEWV(var, fn); more; }
#define CHECK_OP(op, lhs, rhs) { \
if (!((lhs) op (rhs))) { \
DISPLAY("Error L%u => FAILED %s %s %s ", __LINE__, #lhs, #op, #rhs); \
exit(1); \
} \
}
#define CHECK_EQ(lhs, rhs) CHECK_OP(==, lhs, rhs)
#define CHECK_LT(lhs, rhs) CHECK_OP(<, lhs, rhs)
/*=============================================
* Memory Tests
=============================================*/
#if defined(__APPLE__) && defined(__MACH__)
#include <malloc/malloc.h> /* malloc_size */
typedef struct {
unsigned long long totalMalloc;
size_t currentMalloc;
size_t peakMalloc;
unsigned nbMalloc;
unsigned nbFree;
} mallocCounter_t;
static const mallocCounter_t INIT_MALLOC_COUNTER = { 0, 0, 0, 0, 0 };
static void* FUZ_mallocDebug(void* counter, size_t size)
{
mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
void* const ptr = malloc(size);
if (ptr==NULL) return NULL;
DISPLAYLEVEL(4, "allocating %u KB => effectively %u KB \n",
(unsigned)(size >> 10), (unsigned)(malloc_size(ptr) >> 10)); /* OS-X specific */
mcPtr->totalMalloc += size;
mcPtr->currentMalloc += size;
if (mcPtr->currentMalloc > mcPtr->peakMalloc)
mcPtr->peakMalloc = mcPtr->currentMalloc;
mcPtr->nbMalloc += 1;
return ptr;
}
static void FUZ_freeDebug(void* counter, void* address)
{
mallocCounter_t* const mcPtr = (mallocCounter_t*)counter;
DISPLAYLEVEL(4, "freeing %u KB \n", (unsigned)(malloc_size(address) >> 10));
mcPtr->nbFree += 1;
mcPtr->currentMalloc -= malloc_size(address); /* OS-X specific */
free(address);
}
static void FUZ_displayMallocStats(mallocCounter_t count)
{
DISPLAYLEVEL(3, "peak:%6u KB, nbMallocs:%2u, total:%6u KB \n",
(unsigned)(count.peakMalloc >> 10),
count.nbMalloc,
(unsigned)(count.totalMalloc >> 10));
}
static int FUZ_mallocTests_internal(unsigned seed, double compressibility, unsigned part,
void* inBuffer, size_t inSize, void* outBuffer, size_t outSize)
{
/* test only played in verbose mode, as they are long */
if (g_displayLevel<3) return 0;
/* Create compressible noise */
if (!inBuffer || !outBuffer) {
DISPLAY("Not enough memory, aborting\n");
exit(1);
}
RDG_genBuffer(inBuffer, inSize, compressibility, 0. /*auto*/, seed);
/* simple compression tests */
if (part <= 1)
{ int compressionLevel;
for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
mallocCounter_t malcount = INIT_MALLOC_COUNTER;
ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
CHECK_Z( ZSTD_compressCCtx(cctx, outBuffer, outSize, inBuffer, inSize, compressionLevel) );
ZSTD_freeCCtx(cctx);
DISPLAYLEVEL(3, "compressCCtx level %i : ", compressionLevel);
FUZ_displayMallocStats(malcount);
} }
/* streaming compression tests */
if (part <= 2)
{ int compressionLevel;
for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
mallocCounter_t malcount = INIT_MALLOC_COUNTER;
ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
ZSTD_CCtx* const cstream = ZSTD_createCStream_advanced(cMem);
ZSTD_outBuffer out = { outBuffer, outSize, 0 };
ZSTD_inBuffer in = { inBuffer, inSize, 0 };
CHECK_Z( ZSTD_initCStream(cstream, compressionLevel) );
CHECK_Z( ZSTD_compressStream(cstream, &out, &in) );
CHECK_Z( ZSTD_endStream(cstream, &out) );
ZSTD_freeCStream(cstream);
DISPLAYLEVEL(3, "compressStream level %i : ", compressionLevel);
FUZ_displayMallocStats(malcount);
} }
/* advanced MT API test */
if (part <= 3)
{ int nbThreads;
for (nbThreads=1; nbThreads<=4; nbThreads++) {
int compressionLevel;
for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
mallocCounter_t malcount = INIT_MALLOC_COUNTER;
ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
CHECK_Z( ZSTD_compress2(cctx, outBuffer, outSize, inBuffer, inSize) );
ZSTD_freeCCtx(cctx);
DISPLAYLEVEL(3, "compress_generic,-T%i,end level %i : ",
nbThreads, compressionLevel);
FUZ_displayMallocStats(malcount);
} } }
/* advanced MT streaming API test */
if (part <= 4)
{ int nbThreads;
for (nbThreads=1; nbThreads<=4; nbThreads++) {
int compressionLevel;
for (compressionLevel=1; compressionLevel<=6; compressionLevel++) {
mallocCounter_t malcount = INIT_MALLOC_COUNTER;
ZSTD_customMem const cMem = { FUZ_mallocDebug, FUZ_freeDebug, &malcount };
ZSTD_CCtx* const cctx = ZSTD_createCCtx_advanced(cMem);
ZSTD_outBuffer out = { outBuffer, outSize, 0 };
ZSTD_inBuffer in = { inBuffer, inSize, 0 };
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compressionLevel) );
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads) );
CHECK_Z( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_continue) );
while ( ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) ) {}
ZSTD_freeCCtx(cctx);
DISPLAYLEVEL(3, "compress_generic,-T%i,continue level %i : ",
nbThreads, compressionLevel);
FUZ_displayMallocStats(malcount);
} } }
return 0;
}
static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
{
size_t const inSize = 64 MB + 16 MB + 4 MB + 1 MB + 256 KB + 64 KB; /* 85.3 MB */
size_t const outSize = ZSTD_compressBound(inSize);
void* const inBuffer = malloc(inSize);
void* const outBuffer = malloc(outSize);
int result;
/* Create compressible noise */
if (!inBuffer || !outBuffer) {
DISPLAY("Not enough memory, aborting \n");
exit(1);
}
result = FUZ_mallocTests_internal(seed, compressibility, part,
inBuffer, inSize, outBuffer, outSize);
free(inBuffer);
free(outBuffer);
return result;
}
#else
static int FUZ_mallocTests(unsigned seed, double compressibility, unsigned part)
{
(void)seed; (void)compressibility; (void)part;
return 0;
}
#endif
static void FUZ_decodeSequences(BYTE* dst, ZSTD_Sequence* seqs, size_t seqsSize,
BYTE* src, size_t size, ZSTD_sequenceFormat_e format)
{
size_t i;
size_t j;
for(i = 0; i < seqsSize; ++i) {
assert(dst + seqs[i].litLength + seqs[i].matchLength <= dst + size);
assert(src + seqs[i].litLength + seqs[i].matchLength <= src + size);
if (format == ZSTD_sf_noBlockDelimiters) {
assert(seqs[i].matchLength != 0 || seqs[i].offset != 0);
}
memcpy(dst, src, seqs[i].litLength);
dst += seqs[i].litLength;
src += seqs[i].litLength;
size -= seqs[i].litLength;
if (seqs[i].offset != 0) {
for (j = 0; j < seqs[i].matchLength; ++j)
dst[j] = dst[(ptrdiff_t)(j - seqs[i].offset)];
dst += seqs[i].matchLength;
src += seqs[i].matchLength;
size -= seqs[i].matchLength;
}
}
if (format == ZSTD_sf_noBlockDelimiters) {
memcpy(dst, src, size);
}
}
#ifdef ZSTD_MULTITHREAD
typedef struct {
ZSTD_CCtx* cctx;
ZSTD_threadPool* pool;
void* CNBuffer;
size_t CNBuffSize;
void* compressedBuffer;
size_t compressedBufferSize;
void* decodedBuffer;
int err;
} threadPoolTests_compressionJob_payload;
static void* threadPoolTests_compressionJob(void* payload) {
threadPoolTests_compressionJob_payload* args = (threadPoolTests_compressionJob_payload*)payload;
size_t cSize;
if (ZSTD_isError(ZSTD_CCtx_refThreadPool(args->cctx, args->pool))) args->err = 1;
cSize = ZSTD_compress2(args->cctx, args->compressedBuffer, args->compressedBufferSize, args->CNBuffer, args->CNBuffSize);
if (ZSTD_isError(cSize)) args->err = 1;
if (ZSTD_isError(ZSTD_decompress(args->decodedBuffer, args->CNBuffSize, args->compressedBuffer, cSize))) args->err = 1;
return payload;
}
static int threadPoolTests(void) {
int testResult = 0;
size_t err;
size_t const CNBuffSize = 5 MB;
void* const CNBuffer = malloc(CNBuffSize);
size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
void* const compressedBuffer = malloc(compressedBufferSize);
void* const decodedBuffer = malloc(CNBuffSize);
size_t const kPoolNumThreads = 8;
RDG_genBuffer(CNBuffer, CNBuffSize, 0.5, 0.5, 0);
DISPLAYLEVEL(3, "thread pool test : threadPool reuse roundtrips: ");
{
ZSTD_CCtx* cctx = ZSTD_createCCtx();
ZSTD_threadPool* pool = ZSTD_createThreadPool(kPoolNumThreads);
size_t nbThreads = 1;
for (; nbThreads <= kPoolNumThreads; ++nbThreads) {
ZSTD_CCtx_reset(cctx, ZSTD_reset_session_and_parameters);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, (int)nbThreads);
err = ZSTD_CCtx_refThreadPool(cctx, pool);
if (ZSTD_isError(err)) {
DISPLAYLEVEL(3, "refThreadPool error!\n");
ZSTD_freeCCtx(cctx);
goto _output_error;
}
err = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
if (ZSTD_isError(err)) {
DISPLAYLEVEL(3, "Compression error!\n");
ZSTD_freeCCtx(cctx);
goto _output_error;
}
err = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, err);
if (ZSTD_isError(err)) {
DISPLAYLEVEL(3, "Decompression error!\n");
ZSTD_freeCCtx(cctx);
goto _output_error;
}
}
ZSTD_freeCCtx(cctx);
ZSTD_freeThreadPool(pool);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "thread pool test : threadPool simultaneous usage: ");
{
void* const decodedBuffer2 = malloc(CNBuffSize);
void* const compressedBuffer2 = malloc(compressedBufferSize);
ZSTD_threadPool* pool = ZSTD_createThreadPool(kPoolNumThreads);
ZSTD_CCtx* cctx1 = ZSTD_createCCtx();
ZSTD_CCtx* cctx2 = ZSTD_createCCtx();
ZSTD_pthread_t t1;
ZSTD_pthread_t t2;
threadPoolTests_compressionJob_payload p1 = {cctx1, pool, CNBuffer, CNBuffSize,
compressedBuffer, compressedBufferSize, decodedBuffer, 0 /* err */};
threadPoolTests_compressionJob_payload p2 = {cctx2, pool, CNBuffer, CNBuffSize,
compressedBuffer2, compressedBufferSize, decodedBuffer2, 0 /* err */};
ZSTD_CCtx_setParameter(cctx1, ZSTD_c_nbWorkers, 2);
ZSTD_CCtx_setParameter(cctx2, ZSTD_c_nbWorkers, 2);
ZSTD_CCtx_refThreadPool(cctx1, pool);
ZSTD_CCtx_refThreadPool(cctx2, pool);
ZSTD_pthread_create(&t1, NULL, threadPoolTests_compressionJob, &p1);
ZSTD_pthread_create(&t2, NULL, threadPoolTests_compressionJob, &p2);
ZSTD_pthread_join(t1);
ZSTD_pthread_join(t2);
assert(!memcmp(decodedBuffer, decodedBuffer2, CNBuffSize));
free(decodedBuffer2);
free(compressedBuffer2);
ZSTD_freeThreadPool(pool);
ZSTD_freeCCtx(cctx1);
ZSTD_freeCCtx(cctx2);
if (p1.err || p2.err) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
_end:
free(CNBuffer);
free(compressedBuffer);
free(decodedBuffer);
return testResult;
_output_error:
testResult = 1;
DISPLAY("Error detected in Unit tests ! \n");
goto _end;
}
#endif /* ZSTD_MULTITHREAD */
/*=============================================
* Unit tests
=============================================*/
static void test_compressBound(unsigned tnb)
{
DISPLAYLEVEL(3, "test%3u : compressBound : ", tnb);
/* check ZSTD_compressBound == ZSTD_COMPRESSBOUND
* for a large range of known valid values */
DEBUG_STATIC_ASSERT(sizeof(size_t) >= 4);
{ int s;
for (s=0; s<30; s++) {
size_t const w = (size_t)1 << s;
CHECK_EQ(ZSTD_compressBound(w), ZSTD_COMPRESSBOUND(w));
} }
/* Ensure error if srcSize too big */
{ size_t const w = ZSTD_MAX_INPUT_SIZE + 1;
CHECK(ZSTD_isError(ZSTD_compressBound(w))); /* must fail */
CHECK_EQ(ZSTD_COMPRESSBOUND(w), 0);
}
DISPLAYLEVEL(3, "OK \n");
}
static void test_decompressBound(unsigned tnb)
{
DISPLAYLEVEL(3, "test%3u : decompressBound : ", tnb);
/* Simple compression, with size : should provide size; */
{ const char example[] = "abcd";
char cBuffer[ZSTD_COMPRESSBOUND(sizeof(example))];
size_t const cSize = ZSTD_compress(cBuffer, sizeof(cBuffer), example, sizeof(example), 0);
CHECK_Z(cSize);
CHECK_EQ(ZSTD_decompressBound(cBuffer, cSize), (unsigned long long)sizeof(example));
}
/* Simple small compression without size : should provide 1 block size */
{ char cBuffer[ZSTD_COMPRESSBOUND(0)];
ZSTD_outBuffer out = { cBuffer, sizeof(cBuffer), 0 };
ZSTD_inBuffer in = { NULL, 0, 0 };
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
assert(cctx);
CHECK_Z( ZSTD_initCStream(cctx, 0) );
CHECK_Z( ZSTD_compressStream(cctx, &out, &in) );
CHECK_EQ( ZSTD_endStream(cctx, &out), 0 );
CHECK_EQ( ZSTD_decompressBound(cBuffer, out.pos), ZSTD_BLOCKSIZE_MAX );
ZSTD_freeCCtx(cctx);
}
/* Attempt to overflow 32-bit intermediate multiplication result
* This requires dBound >= 4 GB, aka 2^32.
* This requires 2^32 / 2^17 = 2^15 blocks
* => create 2^15 blocks (can be empty, or just 1 byte). */
{ const char input[] = "a";
size_t const nbBlocks = (1 << 15) + 1;
size_t blockNb;
size_t const outCapacity = 1 << 18; /* large margin */
char* const outBuffer = malloc (outCapacity);
ZSTD_outBuffer out = { outBuffer, outCapacity, 0 };
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
assert(cctx);
assert(outBuffer);
CHECK_Z( ZSTD_initCStream(cctx, 0) );
for (blockNb=0; blockNb<nbBlocks; blockNb++) {
ZSTD_inBuffer in = { input, sizeof(input), 0 };
CHECK_Z( ZSTD_compressStream(cctx, &out, &in) );
CHECK_EQ( ZSTD_flushStream(cctx, &out), 0 );
}
CHECK_EQ( ZSTD_endStream(cctx, &out), 0 );
CHECK( ZSTD_decompressBound(outBuffer, out.pos) > 0x100000000LLU /* 4 GB */ );
ZSTD_freeCCtx(cctx);
free(outBuffer);
}
DISPLAYLEVEL(3, "OK \n");
}
static void test_setCParams(unsigned tnb)
{
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
ZSTD_compressionParameters cparams;
assert(cctx);
DISPLAYLEVEL(3, "test%3u : ZSTD_CCtx_setCParams : ", tnb);
/* valid cparams */
cparams = ZSTD_getCParams(1, 0, 0);
CHECK_Z(ZSTD_CCtx_setCParams(cctx, cparams));
/* invalid cparams (must fail) */
cparams.windowLog = 99;
CHECK(ZSTD_isError(ZSTD_CCtx_setCParams(cctx, cparams)));
free(cctx);
DISPLAYLEVEL(3, "OK \n");
}
static int basicUnitTests(U32 const seed, double compressibility)
{
size_t const CNBuffSize = 5 MB;
void* const CNBuffer = malloc(CNBuffSize);
size_t const compressedBufferSize = ZSTD_compressBound(CNBuffSize);
void* const compressedBuffer = malloc(compressedBufferSize);
void* const decodedBuffer = malloc(CNBuffSize);
int testResult = 0;
unsigned testNb=0;
size_t cSize;
/* Create compressible noise */
if (!CNBuffer || !compressedBuffer || !decodedBuffer) {
DISPLAY("Not enough memory, aborting\n");
testResult = 1;
goto _end;
}
RDG_genBuffer(CNBuffer, CNBuffSize, compressibility, 0., seed);
/* Basic tests */
DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName : ", testNb++);
{ const char* errorString = ZSTD_getErrorName(0);
DISPLAYLEVEL(3, "OK : %s \n", errorString);
}
DISPLAYLEVEL(3, "test%3u : ZSTD_getErrorName with wrong value : ", testNb++);
{ const char* errorString = ZSTD_getErrorName(499);
DISPLAYLEVEL(3, "OK : %s \n", errorString);
}
DISPLAYLEVEL(3, "test%3u : min compression level : ", testNb++);
{ int const mcl = ZSTD_minCLevel();
DISPLAYLEVEL(3, "%i (OK) \n", mcl);
}
DISPLAYLEVEL(3, "test%3u : default compression level : ", testNb++);
{ int const defaultCLevel = ZSTD_defaultCLevel();
if (defaultCLevel != ZSTD_CLEVEL_DEFAULT) goto _output_error;
DISPLAYLEVEL(3, "%i (OK) \n", defaultCLevel);
}
DISPLAYLEVEL(3, "test%3u : ZSTD_versionNumber : ", testNb++);
{ unsigned const vn = ZSTD_versionNumber();
DISPLAYLEVEL(3, "%u (OK) \n", vn);
}
test_compressBound(testNb++);
test_decompressBound(testNb++);
test_setCParams(testNb++);
DISPLAYLEVEL(3, "test%3u : ZSTD_adjustCParams : ", testNb++);
{
ZSTD_compressionParameters params;
memset(¶ms, 0, sizeof(params));
params.windowLog = 10;
params.hashLog = 19;
params.chainLog = 19;
params = ZSTD_adjustCParams(params, 1000, 100000);
if (params.hashLog != 18) goto _output_error;
if (params.chainLog != 17) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3u : compress %u bytes : ", testNb++, (unsigned)CNBuffSize);
{ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
if (cctx==NULL) goto _output_error;
CHECK_VAR(cSize, ZSTD_compressCCtx(cctx,
compressedBuffer, compressedBufferSize,
CNBuffer, CNBuffSize, 1) );
DISPLAYLEVEL(3, "OK (%u bytes : %.2f%%)\n", (unsigned)cSize, (double)cSize/CNBuffSize*100);
DISPLAYLEVEL(3, "test%3i : size of cctx for level 1 : ", testNb++);
{ size_t const cctxSize = ZSTD_sizeof_CCtx(cctx);
DISPLAYLEVEL(3, "%u bytes \n", (unsigned)cctxSize);
}
ZSTD_freeCCtx(cctx);
}
DISPLAYLEVEL(3, "test%3i : decompress skippable frame -8 size : ", testNb++);
{
char const skippable8[] = "\x50\x2a\x4d\x18\xf8\xff\xff\xff";
size_t const size = ZSTD_decompress(NULL, 0, skippable8, 8);
if (!ZSTD_isError(size)) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_getFrameContentSize test : ", testNb++);
{ unsigned long long const rSize = ZSTD_getFrameContentSize(compressedBuffer, cSize);
if (rSize != CNBuffSize) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_getDecompressedSize test : ", testNb++);
{ unsigned long long const rSize = ZSTD_getDecompressedSize(compressedBuffer, cSize);
if (rSize != CNBuffSize) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_findDecompressedSize test : ", testNb++);
{ unsigned long long const rSize = ZSTD_findDecompressedSize(compressedBuffer, cSize);
if (rSize != CNBuffSize) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : tight ZSTD_decompressBound test : ", testNb++);
{
unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize);
if (bound != CNBuffSize) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with invalid srcSize : ", testNb++);
{
unsigned long long bound = ZSTD_decompressBound(compressedBuffer, cSize - 1);
if (bound != ZSTD_CONTENTSIZE_ERROR) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress %u bytes : ", testNb++, (unsigned)CNBuffSize);
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
if (r != CNBuffSize) goto _output_error; }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress %u bytes with Huffman assembly disabled : ", testNb++, (unsigned)CNBuffSize);
{
ZSTD_DCtx* dctx = ZSTD_createDCtx();
size_t r;
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_disableHuffmanAssembly, 1));
r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
if (r != CNBuffSize || memcmp(decodedBuffer, CNBuffer, CNBuffSize)) goto _output_error;
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : check decompressed result : ", testNb++);
{ size_t u;
for (u=0; u<CNBuffSize; u++) {
if (((BYTE*)decodedBuffer)[u] != ((BYTE*)CNBuffer)[u]) goto _output_error;
} }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3u : invalid endDirective : ", testNb++);
{ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
ZSTD_inBuffer inb = { CNBuffer, CNBuffSize, 0 };
ZSTD_outBuffer outb = { compressedBuffer, compressedBufferSize, 0 };
if (cctx==NULL) goto _output_error;
CHECK( ZSTD_isError( ZSTD_compressStream2(cctx, &outb, &inb, (ZSTD_EndDirective) 3) ) ); /* must fail */
CHECK( ZSTD_isError( ZSTD_compressStream2(cctx, &outb, &inb, (ZSTD_EndDirective)-1) ) ); /* must fail */
ZSTD_freeCCtx(cctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_checkCParams : ", testNb++);
{
ZSTD_parameters params = ZSTD_getParams(3, 0, 0);
assert(!ZSTD_checkCParams(params.cParams));
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_createDCtx_advanced and ZSTD_sizeof_DCtx: ", testNb++);
{
ZSTD_DCtx* const dctx = ZSTD_createDCtx_advanced(ZSTD_defaultCMem);
assert(dctx != NULL);
assert(ZSTD_sizeof_DCtx(dctx) != 0);
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : misc unaccounted for zstd symbols : ", testNb++);
{
/* %p takes a void*. In ISO C, it's illegal to cast a function pointer
* to a data pointer. (Although in POSIX you're required to be allowed
* to do it...) So we have to fall back to our trusty friend memcpy. */
unsigned (* const funcptr_getDictID)(const ZSTD_DDict* ddict) =
ZSTD_getDictID_fromDDict;
ZSTD_DStream* (* const funcptr_createDStream)(
ZSTD_customMem customMem) = ZSTD_createDStream_advanced;
void (* const funcptr_copyDCtx)(
ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx) = ZSTD_copyDCtx;
ZSTD_nextInputType_e (* const funcptr_nextInputType)(ZSTD_DCtx* dctx) =
ZSTD_nextInputType;
const void *voidptr_getDictID;
const void *voidptr_createDStream;
const void *voidptr_copyDCtx;
const void *voidptr_nextInputType;
DEBUG_STATIC_ASSERT(sizeof(funcptr_getDictID) == sizeof(voidptr_getDictID));
memcpy(
(void*)&voidptr_getDictID,
(const void*)&funcptr_getDictID,
sizeof(void*));
memcpy(
(void*)&voidptr_createDStream,
(const void*)&funcptr_createDStream,
sizeof(void*));
memcpy(
(void*)&voidptr_copyDCtx,
(const void*)&funcptr_copyDCtx,
sizeof(void*));
memcpy(
(void*)&voidptr_nextInputType,
(const void*)&funcptr_nextInputType,
sizeof(void*));
DISPLAYLEVEL(3, "%p ", voidptr_getDictID);
DISPLAYLEVEL(3, "%p ", voidptr_createDStream);
DISPLAYLEVEL(3, "%p ", voidptr_copyDCtx);
DISPLAYLEVEL(3, "%p ", voidptr_nextInputType);
}
DISPLAYLEVEL(3, ": OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with null dict : ", testNb++);
{ ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
{ size_t const r = ZSTD_decompress_usingDict(dctx,
decodedBuffer, CNBuffSize,
compressedBuffer, cSize,
NULL, 0);
if (r != CNBuffSize) goto _output_error;
}
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with null DDict : ", testNb++);
{ ZSTD_DCtx* const dctx = ZSTD_createDCtx(); assert(dctx != NULL);
{ size_t const r = ZSTD_decompress_usingDDict(dctx,
decodedBuffer, CNBuffSize,
compressedBuffer, cSize,
NULL);
if (r != CNBuffSize) goto _output_error;
}
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with 1 missing byte : ", testNb++);
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
if (!ZSTD_isError(r)) goto _output_error;
if (ZSTD_getErrorCode((size_t)r) != ZSTD_error_srcSize_wrong) goto _output_error; }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with 1 too much byte : ", testNb++);
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize+1);
if (!ZSTD_isError(r)) goto _output_error;
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress too large input : ", testNb++);
{ size_t const r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, compressedBufferSize);
if (!ZSTD_isError(r)) goto _output_error;
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress into NULL buffer : ", testNb++);
{ size_t const r = ZSTD_decompress(NULL, 0, compressedBuffer, compressedBufferSize);
if (!ZSTD_isError(r)) goto _output_error;
if (ZSTD_getErrorCode(r) != ZSTD_error_dstSize_tooSmall) goto _output_error; }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : decompress with corrupted checksum : ", testNb++);
{ /* create compressed buffer with checksumming enabled */
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
if (!cctx) {
DISPLAY("Not enough memory, aborting\n");
testResult = 1;
goto _end;
}
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1) );
CHECK_VAR(cSize, ZSTD_compress2(cctx,
compressedBuffer, compressedBufferSize,
CNBuffer, CNBuffSize) );
ZSTD_freeCCtx(cctx);
}
{ /* copy the compressed buffer and corrupt the checksum */
size_t r;
ZSTD_DCtx* const dctx = ZSTD_createDCtx();
if (!dctx) {
DISPLAY("Not enough memory, aborting\n");
testResult = 1;
goto _end;
}
((char*)compressedBuffer)[cSize-1] += 1;
r = ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize);
if (!ZSTD_isError(r)) goto _output_error;
if (ZSTD_getErrorCode(r) != ZSTD_error_checksum_wrong) goto _output_error;
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_forceIgnoreChecksum, ZSTD_d_ignoreChecksum));
r = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize-1);
if (!ZSTD_isError(r)) goto _output_error; /* wrong checksum size should still throw error */
r = ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize);
if (ZSTD_isError(r)) goto _output_error;
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_decompressBound test with content size missing : ", testNb++);
{ /* create compressed buffer with content size missing */
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_contentSizeFlag, 0) );
CHECK_VAR(cSize, ZSTD_compress2(cctx,
compressedBuffer, compressedBufferSize,
CNBuffer, CNBuffSize) );
ZSTD_freeCCtx(cctx);
}
{ /* ensure frame content size is missing */
ZSTD_frameHeader zfh;
size_t const ret = ZSTD_getFrameHeader(&zfh, compressedBuffer, compressedBufferSize);
if (ret != 0 || zfh.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) goto _output_error;
}
{ /* ensure CNBuffSize <= decompressBound */
unsigned long long const bound = ZSTD_decompressBound(compressedBuffer, compressedBufferSize);
if (CNBuffSize > bound) goto _output_error;
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3d: check DCtx size is reduced after many oversized calls : ", testNb++);
{
size_t const largeFrameSrcSize = 200;
size_t const smallFrameSrcSize = 10;
size_t const nbFrames = 256;
size_t i = 0, consumed = 0, produced = 0, prevDCtxSize = 0;
int sizeReduced = 0;
BYTE* const dst = (BYTE*)compressedBuffer;
ZSTD_DCtx* dctx = ZSTD_createDCtx();
/* create a large frame and then a bunch of small frames */
size_t srcSize = ZSTD_compress((void*)dst,
compressedBufferSize, CNBuffer, largeFrameSrcSize, 3);
for (i = 0; i < nbFrames; i++)
srcSize += ZSTD_compress((void*)(dst + srcSize),
compressedBufferSize - srcSize, CNBuffer,
smallFrameSrcSize, 3);
/* decompressStream and make sure that dctx size was reduced at least once */
while (consumed < srcSize) {
ZSTD_inBuffer in = {(void*)(dst + consumed), MIN(1, srcSize - consumed), 0};
ZSTD_outBuffer out = {(BYTE*)CNBuffer + produced, CNBuffSize - produced, 0};
ZSTD_decompressStream(dctx, &out, &in);
consumed += in.pos;
produced += out.pos;
/* success! size was reduced from the previous frame */
if (prevDCtxSize > ZSTD_sizeof_DCtx(dctx))
sizeReduced = 1;
prevDCtxSize = ZSTD_sizeof_DCtx(dctx);
}
assert(sizeReduced);
ZSTD_freeDCtx(dctx);
}
DISPLAYLEVEL(3, "OK \n");
{
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
ZSTD_CDict* const cdict = ZSTD_createCDict(CNBuffer, 100, 1);
ZSTD_parameters const params = ZSTD_getParams(1, 0, 0);
CHECK_Z( ZSTD_CCtx_setParameter(cctx, ZSTD_c_format, ZSTD_f_zstd1_magicless) );
DISPLAYLEVEL(3, "test%3i : ZSTD_compressCCtx() doesn't use advanced parameters", testNb++);
CHECK_Z(ZSTD_compressCCtx(cctx, compressedBuffer, compressedBufferSize, NULL, 0, 1));
if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingDict() doesn't use advanced parameters: ", testNb++);
CHECK_Z(ZSTD_compress_usingDict(cctx, compressedBuffer, compressedBufferSize, NULL, 0, NULL, 0, 1));
if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict() doesn't use advanced parameters: ", testNb++);
CHECK_Z(ZSTD_compress_usingCDict(cctx, compressedBuffer, compressedBufferSize, NULL, 0, cdict));
if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compress_advanced() doesn't use advanced parameters: ", testNb++);
CHECK_Z(ZSTD_compress_advanced(cctx, compressedBuffer, compressedBufferSize, NULL, 0, NULL, 0, params));
if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compress_usingCDict_advanced() doesn't use advanced parameters: ", testNb++);
CHECK_Z(ZSTD_compress_usingCDict_advanced(cctx, compressedBuffer, compressedBufferSize, NULL, 0, cdict, params.fParams));
if (MEM_readLE32(compressedBuffer) != ZSTD_MAGICNUMBER) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
ZSTD_freeCDict(cdict);
ZSTD_freeCCtx(cctx);
}
DISPLAYLEVEL(3, "test%3i : maxBlockSize = 2K", testNb++);
{
ZSTD_CCtx* cctx = ZSTD_createCCtx();
ZSTD_DCtx* dctx = ZSTD_createDCtx();
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_maxBlockSize, 2048));
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_maxBlockSize, 2048));
cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK_Z(cSize);
CHECK_Z(ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize));
CHECK_Z(ZSTD_DCtx_setParameter(dctx, ZSTD_d_maxBlockSize, 1024));
CHECK(ZSTD_isError(ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize)));
ZSTD_freeDCtx(dctx);
ZSTD_freeCCtx(cctx);
}
DISPLAYLEVEL(3, "test%3i : ldm fill dict out-of-bounds check", testNb++);
{
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
size_t const size = (1U << 10);
size_t const dstCapacity = ZSTD_compressBound(size);
void* dict = (void*)malloc(size);
void* src = (void*)malloc(size);
void* dst = (void*)malloc(dstCapacity);
RDG_genBuffer(dict, size, 0.5, 0.5, seed);
RDG_genBuffer(src, size, 0.5, 0.5, seed);
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_enableLongDistanceMatching, ZSTD_ps_enable));
assert(!ZSTD_isError(ZSTD_compress_usingDict(cctx, dst, dstCapacity, src, size, dict, size, 3)));
ZSTD_freeCCtx(cctx);
free(dict);
free(src);
free(dst);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : testing dict compression with enableLdm and forceMaxWindow : ", testNb++);
{
ZSTD_CCtx* const cctx = ZSTD_createCCtx();