723 lines
29 KiB
C
723 lines
29 KiB
C
/**
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* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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/*-************************************
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* Compiler specific
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**************************************/
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#ifdef _MSC_VER /* Visual Studio */
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# define _CRT_SECURE_NO_WARNINGS /* fgets */
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# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
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# pragma warning(disable : 4146) /* disable: C4146: minus unsigned expression */
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#endif
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/*-************************************
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* Includes
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**************************************/
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#include <stdlib.h> /* free */
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#include <stdio.h> /* fgets, sscanf */
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#include <time.h> /* clock_t, clock() */
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#include <string.h> /* strcmp */
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#include "mem.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_maxCLevel, ZSTD_customMem */
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#include "zstd.h" /* ZSTD_compressBound */
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#include "datagen.h" /* RDG_genBuffer */
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#define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */
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#include "xxhash.h" /* XXH64_* */
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/*-************************************
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* Constants
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**************************************/
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#define KB *(1U<<10)
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#define MB *(1U<<20)
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#define GB *(1U<<30)
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static const U32 nbTestsDefault = 10000;
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#define COMPRESSIBLE_NOISE_LENGTH (10 MB)
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#define FUZ_COMPRESSIBILITY_DEFAULT 50
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static const U32 prime1 = 2654435761U;
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static const U32 prime2 = 2246822519U;
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/*-************************************
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* Display Macros
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**************************************/
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
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static U32 g_displayLevel = 2;
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#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
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if ((FUZ_GetClockSpan(g_displayClock) > g_refreshRate) || (g_displayLevel>=4)) \
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{ g_displayClock = clock(); DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stdout); } }
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static const clock_t g_refreshRate = CLOCKS_PER_SEC / 6;
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static clock_t g_displayClock = 0;
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static clock_t g_clockTime = 0;
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/*-*******************************************************
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* Fuzzer functions
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*********************************************************/
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#define MAX(a,b) ((a)>(b)?(a):(b))
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static clock_t FUZ_GetClockSpan(clock_t clockStart)
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{
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return clock() - clockStart; /* works even when overflow. Max span ~ 30 mn */
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}
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/*! FUZ_rand() :
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@return : a 27 bits random value, from a 32-bits `seed`.
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`seed` is also modified */
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# define FUZ_rotl32(x,r) ((x << r) | (x >> (32 - r)))
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unsigned int FUZ_rand(unsigned int* seedPtr)
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{
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U32 rand32 = *seedPtr;
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rand32 *= prime1;
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rand32 += prime2;
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rand32 = FUZ_rotl32(rand32, 13);
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*seedPtr = rand32;
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return rand32 >> 5;
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}
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/*
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static unsigned FUZ_highbit32(U32 v32)
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{
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unsigned nbBits = 0;
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if (v32==0) return 0;
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for ( ; v32 ; v32>>=1) nbBits++;
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return nbBits;
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}
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*/
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static void* allocFunction(void* opaque, size_t size)
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{
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void* address = malloc(size);
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(void)opaque;
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return address;
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}
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static void freeFunction(void* opaque, void* address)
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{
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(void)opaque;
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free(address);
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}
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/*======================================================
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* Basic Unit tests
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======================================================*/
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static int basicUnitTests(U32 seed, double compressibility, ZSTD_customMem customMem)
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{
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size_t const CNBufferSize = COMPRESSIBLE_NOISE_LENGTH;
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void* CNBuffer = malloc(CNBufferSize);
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size_t const skippableFrameSize = 11;
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size_t const compressedBufferSize = (8 + skippableFrameSize) + ZSTD_compressBound(COMPRESSIBLE_NOISE_LENGTH);
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void* compressedBuffer = malloc(compressedBufferSize);
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size_t const decodedBufferSize = CNBufferSize;
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void* decodedBuffer = malloc(decodedBufferSize);
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size_t cSize;
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int testResult = 0;
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U32 testNb=0;
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ZSTD_CStream* zc = ZSTD_createCStream_advanced(customMem);
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ZSTD_DStream* zd = ZSTD_createDStream_advanced(customMem);
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ZSTD_inBuffer inBuff;
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ZSTD_outBuffer outBuff;
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/* Create compressible test buffer */
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if (!CNBuffer || !compressedBuffer || !decodedBuffer || !zc || !zd) {
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DISPLAY("Not enough memory, aborting\n");
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goto _output_error;
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}
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RDG_genBuffer(CNBuffer, CNBufferSize, compressibility, 0., seed);
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/* generate skippable frame */
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MEM_writeLE32(compressedBuffer, ZSTD_MAGIC_SKIPPABLE_START);
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MEM_writeLE32(((char*)compressedBuffer)+4, (U32)skippableFrameSize);
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cSize = skippableFrameSize + 8;
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/* Basic compression test */
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DISPLAYLEVEL(4, "test%3i : compress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZSTD_initCStream_usingDict(zc, CNBuffer, 128 KB, 1);
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = compressedBufferSize;
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outBuff.pos = 0;
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inBuff.src = CNBuffer;
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inBuff.size = CNBufferSize;
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inBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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cSize += outBuff.pos;
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DISPLAYLEVEL(4, "OK (%u bytes : %.2f%%)\n", (U32)cSize, (double)cSize/COMPRESSIBLE_NOISE_LENGTH*100);
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DISPLAYLEVEL(4, "test%3i : check CStream size : ", testNb++);
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{ size_t const s = ZSTD_sizeof_CStream(zc);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(4, "OK (%u bytes) \n", (U32)s);
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}
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/* skippable frame test */
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DISPLAYLEVEL(4, "test%3i : decompress skippable frame : ", testNb++);
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ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB);
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inBuff.src = compressedBuffer;
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inBuff.size = cSize;
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inBuff.pos = 0;
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outBuff.dst = decodedBuffer;
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outBuff.size = CNBufferSize;
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outBuff.pos = 0;
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{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (r != 0) goto _output_error; }
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if (outBuff.pos != 0) goto _output_error; /* skippable frame len is 0 */
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DISPLAYLEVEL(4, "OK \n");
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/* Basic decompression test */
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DISPLAYLEVEL(4, "test%3i : decompress %u bytes : ", testNb++, COMPRESSIBLE_NOISE_LENGTH);
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ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB);
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{ size_t const r = ZSTD_setDStreamParameter(zd, ZSTDdsp_maxWindowSize, 1000000000); /* large limit */
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if (ZSTD_isError(r)) goto _output_error; }
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{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (r != 0) goto _output_error; } /* should reach end of frame == 0; otherwise, some data left, or an error */
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if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (inBuff.pos != inBuff.size) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(4, "OK \n");
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/* check regenerated data is byte exact */
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DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
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{ size_t i;
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for (i=0; i<CNBufferSize; i++) {
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if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;
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} }
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DISPLAYLEVEL(4, "OK \n");
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DISPLAYLEVEL(4, "test%3i : check DStream size : ", testNb++);
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{ size_t const s = ZSTD_sizeof_DStream(zd);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(4, "OK (%u bytes) \n", (U32)s);
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}
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/* Byte-by-byte decompression test */
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DISPLAYLEVEL(4, "test%3i : decompress byte-by-byte : ", testNb++);
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{ /* skippable frame */
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size_t r = 1;
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ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB);
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inBuff.src = compressedBuffer;
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outBuff.dst = decodedBuffer;
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inBuff.pos = 0;
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outBuff.pos = 0;
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while (r) { /* skippable frame */
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inBuff.size = inBuff.pos + 1;
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outBuff.size = outBuff.pos + 1;
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r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error;
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}
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/* normal frame */
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ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB);
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r=1;
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while (r) {
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inBuff.size = inBuff.pos + 1;
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outBuff.size = outBuff.pos + 1;
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r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error;
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}
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}
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if (outBuff.pos != CNBufferSize) goto _output_error; /* should regenerate the same amount */
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if (inBuff.pos != cSize) goto _output_error; /* should have read the entire frame */
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DISPLAYLEVEL(4, "OK \n");
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/* check regenerated data is byte exact */
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DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
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{ size_t i;
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for (i=0; i<CNBufferSize; i++) {
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if (((BYTE*)decodedBuffer)[i] != ((BYTE*)CNBuffer)[i]) goto _output_error;;
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} }
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DISPLAYLEVEL(4, "OK \n");
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/* Complex context re-use scenario */
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DISPLAYLEVEL(4, "test%3i : context re-use : ", testNb++);
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ZSTD_freeCStream(zc);
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zc = ZSTD_createCStream_advanced(customMem);
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if (zc==NULL) goto _output_error; /* memory allocation issue */
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/* use 1 */
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{ size_t const inSize = 513;
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ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
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inBuff.src = CNBuffer;
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inBuff.size = inSize;
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inBuff.pos = 0;
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = ZSTD_compressBound(inSize);
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outBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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}
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/* use 2 */
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{ size_t const inSize = 1025; /* will not continue, because tables auto-adjust and are therefore different size */
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ZSTD_initCStream_advanced(zc, NULL, 0, ZSTD_getParams(19, inSize, 0), inSize); /* needs btopt + search3 to trigger hashLog3 */
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inBuff.src = CNBuffer;
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inBuff.size = inSize;
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inBuff.pos = 0;
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outBuff.dst = (char*)(compressedBuffer)+cSize;
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outBuff.size = ZSTD_compressBound(inSize);
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outBuff.pos = 0;
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{ size_t const r = ZSTD_compressStream(zc, &outBuff, &inBuff);
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if (ZSTD_isError(r)) goto _output_error; }
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if (inBuff.pos != inBuff.size) goto _output_error; /* entire input should be consumed */
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{ size_t const r = ZSTD_endStream(zc, &outBuff);
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if (r != 0) goto _output_error; } /* error, or some data not flushed */
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}
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DISPLAYLEVEL(4, "OK \n");
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DISPLAYLEVEL(4, "test%3i : check CStream size : ", testNb++);
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{ size_t const s = ZSTD_sizeof_CStream(zc);
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if (ZSTD_isError(s)) goto _output_error;
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DISPLAYLEVEL(4, "OK (%u bytes) \n", (U32)s);
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}
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/* test ZSTD_setDStreamParameter() resilience */
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DISPLAYLEVEL(4, "test%3i : wrong parameter for ZSTD_setDStreamParameter(): ", testNb++);
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{ size_t const r = ZSTD_setDStreamParameter(zd, (ZSTD_DStreamParameter_e)999, 1); /* large limit */
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if (!ZSTD_isError(r)) goto _output_error; }
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DISPLAYLEVEL(4, "OK \n");
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/* Memory restriction */
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DISPLAYLEVEL(4, "test%3i : maxWindowSize < frame requirement : ", testNb++);
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ZSTD_initDStream_usingDict(zd, CNBuffer, 128 KB);
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{ size_t const r = ZSTD_setDStreamParameter(zd, ZSTDdsp_maxWindowSize, 1000); /* too small limit */
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if (ZSTD_isError(r)) goto _output_error; }
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inBuff.src = compressedBuffer;
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inBuff.size = cSize;
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inBuff.pos = 0;
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outBuff.dst = decodedBuffer;
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outBuff.size = CNBufferSize;
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outBuff.pos = 0;
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{ size_t const r = ZSTD_decompressStream(zd, &outBuff, &inBuff);
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if (!ZSTD_isError(r)) goto _output_error; /* must fail : frame requires > 100 bytes */
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DISPLAYLEVEL(4, "OK (%s)\n", ZSTD_getErrorName(r)); }
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_end:
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ZSTD_freeCStream(zc);
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ZSTD_freeDStream(zd);
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free(CNBuffer);
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free(compressedBuffer);
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free(decodedBuffer);
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return testResult;
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_output_error:
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testResult = 1;
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DISPLAY("Error detected in Unit tests ! \n");
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goto _end;
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}
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/* ====== Fuzzer tests ====== */
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static size_t findDiff(const void* buf1, const void* buf2, size_t max)
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{
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const BYTE* b1 = (const BYTE*)buf1;
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const BYTE* b2 = (const BYTE*)buf2;
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size_t u;
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for (u=0; u<max; u++) {
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if (b1[u] != b2[u]) break;
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}
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return u;
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}
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static size_t FUZ_rLogLength(U32* seed, U32 logLength)
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{
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size_t const lengthMask = ((size_t)1 << logLength) - 1;
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return (lengthMask+1) + (FUZ_rand(seed) & lengthMask);
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}
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static size_t FUZ_randomLength(U32* seed, U32 maxLog)
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{
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U32 const logLength = FUZ_rand(seed) % maxLog;
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return FUZ_rLogLength(seed, logLength);
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}
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#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
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#define CHECK(cond, ...) if (cond) { DISPLAY("Error => "); DISPLAY(__VA_ARGS__); \
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DISPLAY(" (seed %u, test nb %u) \n", seed, testNb); goto _output_error; }
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static int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compressibility)
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{
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static const U32 maxSrcLog = 24;
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static const U32 maxSampleLog = 19;
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BYTE* cNoiseBuffer[5];
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size_t srcBufferSize = (size_t)1<<maxSrcLog;
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BYTE* copyBuffer;
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size_t copyBufferSize= srcBufferSize + (1<<maxSampleLog);
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BYTE* cBuffer;
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size_t cBufferSize = ZSTD_compressBound(srcBufferSize);
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BYTE* dstBuffer;
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size_t dstBufferSize = srcBufferSize;
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U32 result = 0;
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U32 testNb = 0;
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U32 coreSeed = seed;
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ZSTD_CStream* zc;
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ZSTD_DStream* zd;
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clock_t startClock = clock();
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/* allocations */
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zc = ZSTD_createCStream();
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zd = ZSTD_createDStream();
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cNoiseBuffer[0] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[1] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[2] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[3] = (BYTE*)malloc (srcBufferSize);
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cNoiseBuffer[4] = (BYTE*)malloc (srcBufferSize);
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copyBuffer= (BYTE*)malloc (copyBufferSize);
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dstBuffer = (BYTE*)malloc (dstBufferSize);
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cBuffer = (BYTE*)malloc (cBufferSize);
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CHECK (!cNoiseBuffer[0] || !cNoiseBuffer[1] || !cNoiseBuffer[2] || !cNoiseBuffer[3] || !cNoiseBuffer[4] ||
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!copyBuffer || !dstBuffer || !cBuffer || !zc || !zd,
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"Not enough memory, fuzzer tests cancelled");
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/* Create initial samples */
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RDG_genBuffer(cNoiseBuffer[0], srcBufferSize, 0.00, 0., coreSeed); /* pure noise */
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RDG_genBuffer(cNoiseBuffer[1], srcBufferSize, 0.05, 0., coreSeed); /* barely compressible */
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RDG_genBuffer(cNoiseBuffer[2], srcBufferSize, compressibility, 0., coreSeed);
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RDG_genBuffer(cNoiseBuffer[3], srcBufferSize, 0.95, 0., coreSeed); /* highly compressible */
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RDG_genBuffer(cNoiseBuffer[4], srcBufferSize, 1.00, 0., coreSeed); /* sparse content */
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memset(copyBuffer, 0x65, copyBufferSize); /* make copyBuffer considered initialized */
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/* catch up testNb */
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for (testNb=1; testNb < startTest; testNb++)
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FUZ_rand(&coreSeed);
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/* test loop */
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for ( ; (testNb <= nbTests) || (FUZ_GetClockSpan(startClock) < g_clockTime) ; testNb++ ) {
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U32 lseed;
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const BYTE* srcBuffer;
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const BYTE* dict;
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size_t maxTestSize, dictSize;
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size_t cSize, totalTestSize, totalGenSize;
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U32 n, nbChunks;
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XXH64_state_t xxhState;
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U64 crcOrig;
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/* init */
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DISPLAYUPDATE(2, "\r%6u", testNb);
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if (nbTests >= testNb) DISPLAYUPDATE(2, "/%6u ", nbTests);
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FUZ_rand(&coreSeed);
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lseed = coreSeed ^ prime1;
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/* states full reset (deliberately not synchronized) */
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/* some issues can only happen when reusing states */
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if ((FUZ_rand(&lseed) & 0xFF) == 131) { ZSTD_freeCStream(zc); zc = ZSTD_createCStream(); }
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if ((FUZ_rand(&lseed) & 0xFF) == 132) { ZSTD_freeDStream(zd); zd = ZSTD_createDStream(); }
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/* srcBuffer selection [0-4] */
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{ U32 buffNb = FUZ_rand(&lseed) & 0x7F;
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if (buffNb & 7) buffNb=2; /* most common : compressible (P) */
|
|
else {
|
|
buffNb >>= 3;
|
|
if (buffNb & 7) {
|
|
const U32 tnb[2] = { 1, 3 }; /* barely/highly compressible */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} else {
|
|
const U32 tnb[2] = { 0, 4 }; /* not compressible / sparse */
|
|
buffNb = tnb[buffNb >> 3];
|
|
} }
|
|
srcBuffer = cNoiseBuffer[buffNb];
|
|
}
|
|
|
|
/* compression init */
|
|
{ U32 const testLog = FUZ_rand(&lseed) % maxSrcLog;
|
|
U32 const cLevel = (FUZ_rand(&lseed) % (ZSTD_maxCLevel() - (testLog/3))) + 1;
|
|
maxTestSize = FUZ_rLogLength(&lseed, testLog);
|
|
dictSize = ((FUZ_rand(&lseed)&63)==1) ? FUZ_randomLength(&lseed, maxSampleLog) : 0;
|
|
/* random dictionary selection */
|
|
{ size_t const dictStart = FUZ_rand(&lseed) % (srcBufferSize - dictSize);
|
|
dict = srcBuffer + dictStart;
|
|
}
|
|
{ ZSTD_parameters params = ZSTD_getParams(cLevel, 0, dictSize);
|
|
params.fParams.checksumFlag = FUZ_rand(&lseed) & 1;
|
|
params.fParams.noDictIDFlag = FUZ_rand(&lseed) & 1;
|
|
{ size_t const initError = ZSTD_initCStream_advanced(zc, dict, dictSize, params, 0);
|
|
CHECK (ZSTD_isError(initError),"ZSTD_initCStream_advanced error : %s", ZSTD_getErrorName(initError));
|
|
} } }
|
|
|
|
/* multi-segments compression test */
|
|
XXH64_reset(&xxhState, 0);
|
|
nbChunks = (FUZ_rand(&lseed) & 127) + 2;
|
|
{ ZSTD_outBuffer outBuff = { cBuffer, cBufferSize, 0 } ;
|
|
for (n=0, cSize=0, totalTestSize=0 ; (n<nbChunks) && (totalTestSize < maxTestSize) ; n++) {
|
|
/* compress random chunk into random size dst buffer */
|
|
{ size_t const readChunkSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const srcStart = FUZ_rand(&lseed) % (srcBufferSize - readChunkSize);
|
|
size_t const randomDstSize = FUZ_randomLength(&lseed, maxSampleLog);
|
|
size_t const dstBuffSize = MIN(cBufferSize - cSize, randomDstSize);
|
|
ZSTD_inBuffer inBuff = { srcBuffer+srcStart, readChunkSize, 0 };
|
|
outBuff.size = outBuff.pos + dstBuffSize;
|
|
|
|
{ size_t const compressionError = ZSTD_compressStream(zc, &outBuff, &inBuff);
|
|
CHECK (ZSTD_isError(compressionError), "compression error : %s", ZSTD_getErrorName(compressionError)); }
|
|
|
|
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;
|
|
{ size_t const flushError = ZSTD_flushStream(zc, &outBuff);
|
|
CHECK (ZSTD_isError(flushError), "flush error : %s", ZSTD_getErrorName(flushError));
|
|
} } }
|
|
|
|
/* 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);
|
|
U32 const enoughDstSize = (adjustedDstSize >= remainingToFlush);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
remainingToFlush = ZSTD_endStream(zc, &outBuff);
|
|
CHECK (ZSTD_isError(remainingToFlush), "flush error : %s", ZSTD_getErrorName(remainingToFlush));
|
|
CHECK (enoughDstSize && remainingToFlush, "ZSTD_endStream() not fully flushed (%u remaining), but enough space available", (U32)remainingToFlush);
|
|
} }
|
|
crcOrig = XXH64_digest(&xxhState);
|
|
cSize = outBuff.pos;
|
|
}
|
|
|
|
/* multi - fragments decompression test */
|
|
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 = inBuff.pos + dstBuffSize;
|
|
decompressionResult = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
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")
|
|
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 */
|
|
ZSTD_initDStream(zd);
|
|
{ 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);
|
|
outBuff.size = outBuff.pos + adjustedDstSize;
|
|
inBuff.size = inBuff.pos + randomCSrcSize;
|
|
{ size_t const decompressError = ZSTD_decompressStream(zd, &outBuff, &inBuff);
|
|
if (ZSTD_isError(decompressError)) break; /* error correctly detected */
|
|
} } } }
|
|
DISPLAY("\r%u fuzzer tests completed \n", testNb);
|
|
|
|
_cleanup:
|
|
ZSTD_freeCStream(zc);
|
|
ZSTD_freeDStream(zd);
|
|
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
|
|
*********************************************************/
|
|
int FUZ_usage(const char* programName)
|
|
{
|
|
DISPLAY( "Usage :\n");
|
|
DISPLAY( " %s [args]\n", programName);
|
|
DISPLAY( "\n");
|
|
DISPLAY( "Arguments :\n");
|
|
DISPLAY( " -i# : Nb of tests (default:%u) \n", nbTestsDefault);
|
|
DISPLAY( " -s# : Select seed (default:prompt user)\n");
|
|
DISPLAY( " -t# : Select starting test number (default:0)\n");
|
|
DISPLAY( " -P# : Select compressibility in %% (default:%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;
|
|
}
|
|
|
|
|
|
int main(int argc, const char** argv)
|
|
{
|
|
U32 seed=0;
|
|
int seedset=0;
|
|
int argNb;
|
|
int nbTests = nbTestsDefault;
|
|
int testNb = 0;
|
|
int proba = FUZ_COMPRESSIBILITY_DEFAULT;
|
|
int result=0;
|
|
U32 mainPause = 0;
|
|
const char* programName = argv[0];
|
|
ZSTD_customMem customMem = { allocFunction, freeFunction, NULL };
|
|
ZSTD_customMem customNULL = { NULL, NULL, NULL };
|
|
|
|
/* Check command line */
|
|
for(argNb=1; argNb<argc; argNb++) {
|
|
const char* argument = argv[argNb];
|
|
if(!argument) continue; /* Protection if argument empty */
|
|
|
|
/* Parsing commands. Aggregated commands are allowed */
|
|
if (argument[0]=='-') {
|
|
argument++;
|
|
|
|
while (*argument!=0) {
|
|
switch(*argument)
|
|
{
|
|
case 'h':
|
|
return FUZ_usage(programName);
|
|
case 'v':
|
|
argument++;
|
|
g_displayLevel=4;
|
|
break;
|
|
case 'q':
|
|
argument++;
|
|
g_displayLevel--;
|
|
break;
|
|
case 'p': /* pause at the end */
|
|
argument++;
|
|
mainPause = 1;
|
|
break;
|
|
|
|
case 'i':
|
|
argument++;
|
|
nbTests=0; g_clockTime=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
nbTests *= 10;
|
|
nbTests += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'T':
|
|
argument++;
|
|
nbTests=0; g_clockTime=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
g_clockTime *= 10;
|
|
g_clockTime += *argument - '0';
|
|
argument++;
|
|
}
|
|
if (*argument=='m') g_clockTime *=60, argument++;
|
|
if (*argument=='n') argument++;
|
|
g_clockTime *= CLOCKS_PER_SEC;
|
|
break;
|
|
|
|
case 's':
|
|
argument++;
|
|
seed=0;
|
|
seedset=1;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
seed *= 10;
|
|
seed += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 't':
|
|
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", 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, customNULL); /* constant seed for predictability */
|
|
if (!result) {
|
|
DISPLAYLEVEL(4, "Unit tests using customMem :\n")
|
|
result = basicUnitTests(0, ((double)proba) / 100, customMem); /* use custom memory allocation functions */
|
|
} }
|
|
|
|
if (!result)
|
|
result = fuzzerTests(seed, nbTests, testNb, ((double)proba) / 100);
|
|
|
|
if (mainPause) {
|
|
int unused;
|
|
DISPLAY("Press Enter \n");
|
|
unused = getchar();
|
|
(void)unused;
|
|
}
|
|
return result;
|
|
}
|