1589 lines
82 KiB
C
1589 lines
82 KiB
C
/*
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fuzzer.c - Fuzzer test tool for LZ4
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Copyright (C) Yann Collet 2012-2017
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- LZ4 homepage : http://www.lz4.org
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- LZ4 source repo : https://github.com/lz4/lz4
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*/
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/*-************************************
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* Compiler options
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**************************************/
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#ifdef _MSC_VER /* Visual Studio */
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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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# pragma warning(disable : 4310) /* disable: C4310: constant char value > 127 */
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#endif
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/*-************************************
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* Dependencies
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**************************************/
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#if defined(__unix__) && !defined(_AIX) /* must be included before platform.h for MAP_ANONYMOUS */
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# undef _GNU_SOURCE /* in case it's already defined */
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# define _GNU_SOURCE /* MAP_ANONYMOUS even in -std=c99 mode */
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# include <sys/mman.h> /* mmap */
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#endif
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#include "platform.h" /* _CRT_SECURE_NO_WARNINGS */
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#include "util.h" /* U32 */
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#include <stdlib.h>
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#include <stdio.h> /* fgets, sscanf */
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#include <string.h> /* strcmp */
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#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC */
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#include <assert.h>
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#include <limits.h> /* INT_MAX */
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#if defined(_AIX)
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# include <sys/mman.h> /* mmap */
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#endif
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#define LZ4_DISABLE_DEPRECATE_WARNINGS /* LZ4_decompress_fast */
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#define LZ4_STATIC_LINKING_ONLY
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#include "lz4.h"
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#define LZ4_HC_STATIC_LINKING_ONLY
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#include "lz4hc.h"
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#define XXH_STATIC_LINKING_ONLY
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#include "xxhash.h"
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/*-************************************
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* Basic Types
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**************************************/
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#if !defined(__cplusplus) && !(defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
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typedef size_t uintptr_t; /* true on most systems, except OpenVMS-64 (which doesn't need address overflow test) */
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#endif
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/*-************************************
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* Constants
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**************************************/
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#define NB_ATTEMPTS (1<<16)
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#define COMPRESSIBLE_NOISE_LENGTH (1 << 21)
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#define FUZ_MAX_BLOCK_SIZE (1 << 17)
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#define FUZ_MAX_DICT_SIZE (1 << 15)
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#define FUZ_COMPRESSIBILITY_DEFAULT 60
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#define PRIME1 2654435761U
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#define PRIME2 2246822519U
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#define PRIME3 3266489917U
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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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/*-***************************************
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* Macros
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*****************************************/
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#define DISPLAY(...) fprintf(stdout, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
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static int g_displayLevel = 2;
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#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
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/*-*******************************************************
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* Fuzzer functions
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*********************************************************/
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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 if overflow; max span ~ 30mn */
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}
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static void FUZ_displayUpdate(unsigned testNb)
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{
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static clock_t g_time = 0;
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static const clock_t g_refreshRate = CLOCKS_PER_SEC / 5;
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if ((FUZ_GetClockSpan(g_time) > g_refreshRate) || (g_displayLevel>=4)) {
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g_time = clock();
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DISPLAY("\r%5u ", testNb);
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fflush(stdout);
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}
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}
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static U32 FUZ_rotl32(U32 u32, U32 nbBits)
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{
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return ((u32 << nbBits) | (u32 >> (32 - nbBits)));
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}
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static U32 FUZ_rand(U32* src)
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{
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U32 rand32 = *src;
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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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*src = rand32;
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return rand32;
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}
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#define FUZ_RAND15BITS ((FUZ_rand(seed) >> 3) & 32767)
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#define FUZ_RANDLENGTH ( ((FUZ_rand(seed) >> 7) & 3) ? (FUZ_rand(seed) % 15) : (FUZ_rand(seed) % 510) + 15)
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static void FUZ_fillCompressibleNoiseBuffer(void* buffer, size_t bufferSize, double proba, U32* seed)
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{
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BYTE* const BBuffer = (BYTE*)buffer;
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size_t pos = 0;
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U32 const P32 = (U32)(32768 * proba);
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/* First Bytes */
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while (pos < 20)
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BBuffer[pos++] = (BYTE)(FUZ_rand(seed));
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while (pos < bufferSize) {
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/* Select : Literal (noise) or copy (within 64K) */
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if (FUZ_RAND15BITS < P32) {
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/* Copy (within 64K) */
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size_t const length = (size_t)FUZ_RANDLENGTH + 4;
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size_t const d = MIN(pos+length, bufferSize);
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size_t match;
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size_t offset = (size_t)FUZ_RAND15BITS + 1;
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while (offset > pos) offset >>= 1;
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match = pos - offset;
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while (pos < d) BBuffer[pos++] = BBuffer[match++];
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} else {
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/* Literal (noise) */
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size_t const length = FUZ_RANDLENGTH;
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size_t const d = MIN(pos+length, bufferSize);
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while (pos < d) BBuffer[pos++] = (BYTE)(FUZ_rand(seed) >> 5);
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}
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}
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}
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#define MAX_NB_BUFF_I134 150
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#define BLOCKSIZE_I134 (32 MB)
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/*! FUZ_AddressOverflow() :
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* Aggressively pushes memory allocation limits,
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* and generates patterns which create address space overflow.
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* only possible in 32-bits mode */
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static int FUZ_AddressOverflow(void)
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{
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char* buffers[MAX_NB_BUFF_I134+1];
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int nbBuff=0;
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int highAddress = 0;
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DISPLAY("Overflow tests : ");
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/* Only possible in 32-bits */
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if (sizeof(void*)==8) {
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DISPLAY("64 bits mode : no overflow \n");
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fflush(stdout);
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return 0;
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}
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buffers[0] = (char*)malloc(BLOCKSIZE_I134);
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buffers[1] = (char*)malloc(BLOCKSIZE_I134);
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if ((!buffers[0]) || (!buffers[1])) {
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free(buffers[0]); free(buffers[1]);
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DISPLAY("not enough memory for tests \n");
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return 0;
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}
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for (nbBuff=2; nbBuff < MAX_NB_BUFF_I134; nbBuff++) {
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DISPLAY("%3i \b\b\b\b", nbBuff); fflush(stdout);
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buffers[nbBuff] = (char*)malloc(BLOCKSIZE_I134);
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if (buffers[nbBuff]==NULL) goto _endOfTests;
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if (((uintptr_t)buffers[nbBuff] > (uintptr_t)0x80000000) && (!highAddress)) {
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DISPLAY("high address detected : ");
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fflush(stdout);
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highAddress=1;
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}
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{ size_t const sizeToGenerateOverflow = (size_t)(- ((uintptr_t)buffers[nbBuff-1]) + 512);
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unsigned const nbOf255 = (unsigned)((sizeToGenerateOverflow / 255) + 1);
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char* const input = buffers[nbBuff-1];
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char* output = buffers[nbBuff];
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int r;
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input[0] = (char)0xF0; /* Literal length overflow */
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input[1] = (char)0xFF;
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input[2] = (char)0xFF;
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input[3] = (char)0xFF;
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{ unsigned u; for(u = 4; u <= nbOf255+4; u++) input[u] = (char)0xff; }
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r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
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if (r>0) { DISPLAY("LZ4_decompress_safe = %i \n", r); goto _overflowError; }
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input[0] = (char)0x1F; /* Match length overflow */
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input[1] = (char)0x01;
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input[2] = (char)0x01;
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input[3] = (char)0x00;
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r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
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if (r>0) { DISPLAY("LZ4_decompress_safe = %i \n", r); goto _overflowError; }
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output = buffers[nbBuff-2]; /* Reverse in/out pointer order */
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input[0] = (char)0xF0; /* Literal length overflow */
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input[1] = (char)0xFF;
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input[2] = (char)0xFF;
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input[3] = (char)0xFF;
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r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
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if (r>0) goto _overflowError;
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input[0] = (char)0x1F; /* Match length overflow */
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input[1] = (char)0x01;
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input[2] = (char)0x01;
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input[3] = (char)0x00;
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r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
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if (r>0) goto _overflowError;
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}
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}
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nbBuff++;
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_endOfTests:
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{ int i; for (i=0 ; i<nbBuff; i++) free(buffers[i]); }
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if (!highAddress) DISPLAY("high address not possible \n");
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else DISPLAY("all overflows correctly detected \n");
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return 0;
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_overflowError:
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DISPLAY("Address space overflow error !! \n");
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exit(1);
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}
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#ifdef __unix__ /* is expected to be triggered on linux+gcc */
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static void* FUZ_createLowAddr(size_t size)
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{
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void* const lowBuff = mmap((void*)(0x1000), size,
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PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
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-1, 0);
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DISPLAYLEVEL(2, "generating low buffer at address %p \n", lowBuff);
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return lowBuff;
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}
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static void FUZ_freeLowAddr(void* buffer, size_t size)
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{
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if (munmap(buffer, size)) {
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perror("fuzzer: freeing low address buffer");
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abort();
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}
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}
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#else
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static void* FUZ_createLowAddr(size_t size)
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{
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return malloc(size);
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}
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static void FUZ_freeLowAddr(void* buffer, size_t size)
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{
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(void)size;
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free(buffer);
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}
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#endif
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/*! FUZ_findDiff() :
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* find the first different byte between buff1 and buff2.
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* presumes buff1 != buff2.
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* presumes a difference exists before end of either buffer.
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* Typically invoked after a checksum mismatch.
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*/
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static void FUZ_findDiff(const void* buff1, const void* buff2)
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{
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const BYTE* const b1 = (const BYTE*)buff1;
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const BYTE* const b2 = (const BYTE*)buff2;
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size_t u = 0;
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while (b1[u]==b2[u]) u++;
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DISPLAY("\nWrong Byte at position %u \n", (unsigned)u);
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}
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static int FUZ_test(U32 seed, U32 nbCycles, const U32 startCycle, const double compressibility, U32 duration_s)
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{
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unsigned long long bytes = 0;
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unsigned long long cbytes = 0;
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unsigned long long hcbytes = 0;
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unsigned long long ccbytes = 0;
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void* const CNBuffer = malloc(COMPRESSIBLE_NOISE_LENGTH);
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size_t const compressedBufferSize = (size_t)LZ4_compressBound(FUZ_MAX_BLOCK_SIZE);
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char* const compressedBuffer = (char*)malloc(compressedBufferSize);
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char* const decodedBuffer = (char*)malloc(FUZ_MAX_DICT_SIZE + FUZ_MAX_BLOCK_SIZE);
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size_t const labSize = 96 KB;
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void* const lowAddrBuffer = FUZ_createLowAddr(labSize);
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void* const stateLZ4 = malloc((size_t)LZ4_sizeofState());
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void* const stateLZ4HC = malloc((size_t)LZ4_sizeofStateHC());
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LZ4_stream_t LZ4dictBody;
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LZ4_streamHC_t* LZ4dictHC = LZ4_createStreamHC();
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U32 coreRandState = seed;
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clock_t const clockStart = clock();
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clock_t const clockDuration = (clock_t)duration_s * CLOCKS_PER_SEC;
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int result = 0;
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unsigned cycleNb;
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# define EXIT_MSG(...) { \
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printf("Test %u : ", testNb); printf(__VA_ARGS__); \
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printf(" (seed %u, cycle %u) \n", seed, cycleNb); \
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exit(1); \
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}
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# define FUZ_CHECKTEST(cond, ...) { if (cond) { EXIT_MSG(__VA_ARGS__) } }
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# define FUZ_DISPLAYTEST(...) { \
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testNb++; \
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if (g_displayLevel>=4) { \
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printf("\r%4u - %2u :", cycleNb, testNb); \
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printf(" " __VA_ARGS__); \
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printf(" "); \
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fflush(stdout); \
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} }
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/* init */
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if(!CNBuffer || !compressedBuffer || !decodedBuffer || !LZ4dictHC) {
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DISPLAY("Not enough memory to start fuzzer tests");
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exit(1);
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}
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if ( LZ4_initStream(&LZ4dictBody, sizeof(LZ4dictBody)) == NULL) abort();
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{ U32 randState = coreRandState ^ PRIME3;
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FUZ_fillCompressibleNoiseBuffer(CNBuffer, COMPRESSIBLE_NOISE_LENGTH, compressibility, &randState);
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}
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/* move to startCycle */
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for (cycleNb = 0; cycleNb < startCycle; cycleNb++)
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(void) FUZ_rand(&coreRandState); /* sync coreRandState */
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/* Main test loop */
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for (cycleNb = startCycle;
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(cycleNb < nbCycles) || (FUZ_GetClockSpan(clockStart) < clockDuration);
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cycleNb++) {
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U32 testNb = 0;
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U32 randState = FUZ_rand(&coreRandState) ^ PRIME3;
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int const blockSize = (FUZ_rand(&randState) % (FUZ_MAX_BLOCK_SIZE-1)) + 1;
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int const blockStart = (FUZ_rand(&randState) % (COMPRESSIBLE_NOISE_LENGTH - blockSize - 1)) + 1;
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int const dictSizeRand = FUZ_rand(&randState) % FUZ_MAX_DICT_SIZE;
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int const dictSize = MIN(dictSizeRand, blockStart - 1);
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int const compressionLevel = FUZ_rand(&randState) % (LZ4HC_CLEVEL_MAX+1);
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const char* block = ((char*)CNBuffer) + blockStart;
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const char* dict = block - dictSize;
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int compressedSize, HCcompressedSize;
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int blockContinueCompressedSize;
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U32 const crcOrig = XXH32(block, (size_t)blockSize, 0);
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int ret;
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FUZ_displayUpdate(cycleNb);
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/* Compression tests */
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if ( ((FUZ_rand(&randState) & 63) == 2)
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&& ((size_t)blockSize < labSize) ) {
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memcpy(lowAddrBuffer, block, blockSize);
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block = (const char*)lowAddrBuffer;
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}
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/* Test compression destSize */
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FUZ_DISPLAYTEST("test LZ4_compress_destSize()");
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{ int srcSize = blockSize;
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int const targetSize = srcSize * (int)((FUZ_rand(&randState) & 127)+1) >> 7;
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char endCheck = (char)(FUZ_rand(&randState) & 255);
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compressedBuffer[targetSize] = endCheck;
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ret = LZ4_compress_destSize(block, compressedBuffer, &srcSize, targetSize);
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FUZ_CHECKTEST(ret > targetSize, "LZ4_compress_destSize() result larger than dst buffer !");
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FUZ_CHECKTEST(compressedBuffer[targetSize] != endCheck, "LZ4_compress_destSize() overwrite dst buffer !");
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FUZ_CHECKTEST(srcSize > blockSize, "LZ4_compress_destSize() fed more than src buffer !");
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DISPLAYLEVEL(5, "destSize : %7i/%7i; content%7i/%7i ", ret, targetSize, srcSize, blockSize);
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if (targetSize>0) {
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/* check correctness */
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U32 const crcBase = XXH32(block, (size_t)srcSize, 0);
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char const canary = (char)(FUZ_rand(&randState) & 255);
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FUZ_CHECKTEST((ret==0), "LZ4_compress_destSize() compression failed");
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FUZ_DISPLAYTEST();
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compressedSize = ret;
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decodedBuffer[srcSize] = canary;
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ret = LZ4_decompress_safe(compressedBuffer, decodedBuffer, compressedSize, srcSize);
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FUZ_CHECKTEST(ret<0, "LZ4_decompress_safe() failed on data compressed by LZ4_compress_destSize");
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FUZ_CHECKTEST(ret!=srcSize, "LZ4_decompress_safe() failed : did not fully decompressed data");
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FUZ_CHECKTEST(decodedBuffer[srcSize] != canary, "LZ4_decompress_safe() overwrite dst buffer !");
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{ U32 const crcDec = XXH32(decodedBuffer, (size_t)srcSize, 0);
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FUZ_CHECKTEST(crcDec!=crcBase, "LZ4_decompress_safe() corrupted decoded data"); }
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DISPLAYLEVEL(5, " OK \n");
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} else {
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DISPLAYLEVEL(5, " \n");
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} }
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/* Test compression HC destSize */
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FUZ_DISPLAYTEST("test LZ4_compress_HC_destSize()");
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{ int srcSize = blockSize;
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int const targetSize = srcSize * (int)((FUZ_rand(&randState) & 127)+1) >> 7;
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char const endCheck = (char)(FUZ_rand(&randState) & 255);
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void* ctx = LZ4_createHC(block);
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FUZ_CHECKTEST(ctx==NULL, "LZ4_createHC() allocation failed");
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compressedBuffer[targetSize] = endCheck;
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ret = LZ4_compress_HC_destSize(ctx, block, compressedBuffer, &srcSize, targetSize, compressionLevel);
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DISPLAYLEVEL(5, "LZ4_compress_HC_destSize(%i): destSize : %7i/%7i; content%7i/%7i ",
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compressionLevel, ret, targetSize, srcSize, blockSize);
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LZ4_freeHC(ctx);
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FUZ_CHECKTEST(ret > targetSize, "LZ4_compress_HC_destSize() result larger than dst buffer !");
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FUZ_CHECKTEST(compressedBuffer[targetSize] != endCheck, "LZ4_compress_HC_destSize() overwrite dst buffer !");
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FUZ_CHECKTEST(srcSize > blockSize, "LZ4_compress_HC_destSize() fed more than src buffer !");
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if (targetSize>0) {
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/* check correctness */
|
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U32 const crcBase = XXH32(block, (size_t)srcSize, 0);
|
|
char const canary = (char)(FUZ_rand(&randState) & 255);
|
|
FUZ_CHECKTEST((ret==0), "LZ4_compress_HC_destSize() compression failed");
|
|
FUZ_DISPLAYTEST();
|
|
compressedSize = ret;
|
|
decodedBuffer[srcSize] = canary;
|
|
ret = LZ4_decompress_safe(compressedBuffer, decodedBuffer, compressedSize, srcSize);
|
|
FUZ_CHECKTEST(ret<0, "LZ4_decompress_safe() failed on data compressed by LZ4_compressHC_destSize");
|
|
FUZ_CHECKTEST(ret!=srcSize, "LZ4_decompress_safe() failed : did not fully decompressed data");
|
|
FUZ_CHECKTEST(decodedBuffer[srcSize] != canary, "LZ4_decompress_safe() overwrite dst buffer !");
|
|
{ U32 const crcDec = XXH32(decodedBuffer, (size_t)srcSize, 0);
|
|
FUZ_CHECKTEST(crcDec!=crcBase, "LZ4_decompress_safe() corrupted decoded data");
|
|
}
|
|
DISPLAYLEVEL(5, " OK \n");
|
|
} else {
|
|
DISPLAYLEVEL(5, " \n");
|
|
} }
|
|
|
|
/* Test compression HC */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC()");
|
|
HCcompressedSize = LZ4_compress_HC(block, compressedBuffer, blockSize, (int)compressedBufferSize, compressionLevel);
|
|
FUZ_CHECKTEST(HCcompressedSize==0, "LZ4_compress_HC() failed");
|
|
|
|
/* Test compression HC using external state */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC_extStateHC()");
|
|
{ int const r = LZ4_compress_HC_extStateHC(stateLZ4HC, block, compressedBuffer, blockSize, (int)compressedBufferSize, compressionLevel);
|
|
FUZ_CHECKTEST(r==0, "LZ4_compress_HC_extStateHC() failed")
|
|
}
|
|
|
|
/* Test compression HC using fast reset external state */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC_extStateHC_fastReset()");
|
|
{ int const r = LZ4_compress_HC_extStateHC_fastReset(stateLZ4HC, block, compressedBuffer, blockSize, (int)compressedBufferSize, compressionLevel);
|
|
FUZ_CHECKTEST(r==0, "LZ4_compress_HC_extStateHC_fastReset() failed");
|
|
}
|
|
|
|
/* Test compression using external state */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_extState()");
|
|
{ int const r = LZ4_compress_fast_extState(stateLZ4, block, compressedBuffer, blockSize, (int)compressedBufferSize, 8);
|
|
FUZ_CHECKTEST(r==0, "LZ4_compress_fast_extState() failed"); }
|
|
|
|
/* Test compression using fast reset external state*/
|
|
FUZ_DISPLAYTEST();
|
|
{ int const r = LZ4_compress_fast_extState_fastReset(stateLZ4, block, compressedBuffer, blockSize, (int)compressedBufferSize, 8);
|
|
FUZ_CHECKTEST(r==0, "LZ4_compress_fast_extState_fastReset() failed"); }
|
|
|
|
/* Test compression */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_default()");
|
|
compressedSize = LZ4_compress_default(block, compressedBuffer, blockSize, (int)compressedBufferSize);
|
|
FUZ_CHECKTEST(compressedSize<=0, "LZ4_compress_default() failed");
|
|
|
|
/* Decompression tests */
|
|
|
|
/* Test decompress_fast() with input buffer size exactly correct => must not read out of bound */
|
|
{ char* const cBuffer_exact = (char*)malloc((size_t)compressedSize);
|
|
assert(cBuffer_exact != NULL);
|
|
assert(compressedSize <= (int)compressedBufferSize);
|
|
memcpy(cBuffer_exact, compressedBuffer, compressedSize);
|
|
|
|
/* Test decoding with output size exactly correct => must work */
|
|
FUZ_DISPLAYTEST("LZ4_decompress_fast() with exact output buffer");
|
|
{ int const r = LZ4_decompress_fast(cBuffer_exact, decodedBuffer, blockSize);
|
|
FUZ_CHECKTEST(r<0, "LZ4_decompress_fast failed despite correct space");
|
|
FUZ_CHECKTEST(r!=compressedSize, "LZ4_decompress_fast failed : did not fully read compressed data");
|
|
}
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_fast corrupted decoded data");
|
|
}
|
|
|
|
/* Test decoding with one byte missing => must fail */
|
|
FUZ_DISPLAYTEST("LZ4_decompress_fast() with output buffer 1-byte too short");
|
|
decodedBuffer[blockSize-1] = 0;
|
|
{ int const r = LZ4_decompress_fast(cBuffer_exact, decodedBuffer, blockSize-1);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_fast should have failed, due to Output Size being too small");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1]!=0, "LZ4_decompress_fast overrun specified output buffer");
|
|
|
|
/* Test decoding with one byte too much => must fail */
|
|
FUZ_DISPLAYTEST();
|
|
{ int const r = LZ4_decompress_fast(cBuffer_exact, decodedBuffer, blockSize+1);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_fast should have failed, due to Output Size being too large");
|
|
}
|
|
|
|
/* Test decoding with output size exactly what's necessary => must work */
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
{ int const r = LZ4_decompress_safe(cBuffer_exact, decodedBuffer, compressedSize, blockSize);
|
|
FUZ_CHECKTEST(r<0, "LZ4_decompress_safe failed despite sufficient space");
|
|
FUZ_CHECKTEST(r!=blockSize, "LZ4_decompress_safe did not regenerate original data");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_safe corrupted decoded data");
|
|
}
|
|
|
|
/* Test decoding with more than enough output size => must work */
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
decodedBuffer[blockSize+1] = 0;
|
|
{ int const r = LZ4_decompress_safe(cBuffer_exact, decodedBuffer, compressedSize, blockSize+1);
|
|
FUZ_CHECKTEST(r<0, "LZ4_decompress_safe failed despite amply sufficient space");
|
|
FUZ_CHECKTEST(r!=blockSize, "LZ4_decompress_safe did not regenerate original data");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize+1], "LZ4_decompress_safe overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_safe corrupted decoded data");
|
|
}
|
|
|
|
/* Test decoding with output size being one byte too short => must fail */
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize-1] = 0;
|
|
{ int const r = LZ4_decompress_safe(cBuffer_exact, decodedBuffer, compressedSize, blockSize-1);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_safe should have failed, due to Output Size being one byte too short");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1], "LZ4_decompress_safe overrun specified output buffer size");
|
|
|
|
/* Test decoding with output size being 10 bytes too short => must fail */
|
|
FUZ_DISPLAYTEST();
|
|
if (blockSize>10) {
|
|
decodedBuffer[blockSize-10] = 0;
|
|
{ int const r = LZ4_decompress_safe(cBuffer_exact, decodedBuffer, compressedSize, blockSize-10);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_safe should have failed, due to Output Size being 10 bytes too short");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-10], "LZ4_decompress_safe overrun specified output buffer size");
|
|
}
|
|
|
|
free(cBuffer_exact);
|
|
}
|
|
|
|
/* Test decoding with input size being one byte too short => must fail */
|
|
FUZ_DISPLAYTEST();
|
|
{ int const r = LZ4_decompress_safe(compressedBuffer, decodedBuffer, compressedSize-1, blockSize);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_safe should have failed, due to input size being one byte too short (blockSize=%i, ret=%i, compressedSize=%i)", blockSize, ret, compressedSize);
|
|
}
|
|
|
|
/* Test decoding with input size being one byte too large => must fail */
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
{ int const r = LZ4_decompress_safe(compressedBuffer, decodedBuffer, compressedSize+1, blockSize);
|
|
FUZ_CHECKTEST(r>=0, "LZ4_decompress_safe should have failed, due to input size being too large");
|
|
}
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe overrun specified output buffer size");
|
|
|
|
/* Test partial decoding => must work */
|
|
FUZ_DISPLAYTEST("test LZ4_decompress_safe_partial");
|
|
{ size_t const missingBytes = FUZ_rand(&randState) % blockSize;
|
|
int const targetSize = (int)((size_t)blockSize - missingBytes);
|
|
char const sentinel = decodedBuffer[targetSize] = block[targetSize] ^ 0x5A;
|
|
int const decResult = LZ4_decompress_safe_partial(compressedBuffer, decodedBuffer, compressedSize, targetSize, blockSize);
|
|
FUZ_CHECKTEST(decResult<0, "LZ4_decompress_safe_partial failed despite valid input data (error:%i)", decResult);
|
|
FUZ_CHECKTEST(decResult != targetSize, "LZ4_decompress_safe_partial did not regenerated required amount of data (%i < %i <= %i)", decResult, targetSize, blockSize);
|
|
FUZ_CHECKTEST(decodedBuffer[targetSize] != sentinel, "LZ4_decompress_safe_partial overwrite beyond requested size (though %i <= %i <= %i)", decResult, targetSize, blockSize);
|
|
}
|
|
|
|
/* Test Compression with limited output size */
|
|
|
|
/* Test compression with output size being exactly what's necessary (should work) */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_default() with output buffer just the right size");
|
|
ret = LZ4_compress_default(block, compressedBuffer, blockSize, compressedSize);
|
|
FUZ_CHECKTEST(ret==0, "LZ4_compress_default() failed despite sufficient space");
|
|
|
|
/* Test compression with output size being exactly what's necessary and external state (should work) */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_extState() with output buffer just the right size");
|
|
ret = LZ4_compress_fast_extState(stateLZ4, block, compressedBuffer, blockSize, compressedSize, 1);
|
|
FUZ_CHECKTEST(ret==0, "LZ4_compress_fast_extState() failed despite sufficient space");
|
|
|
|
/* Test HC compression with output size being exactly what's necessary (should work) */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC() with output buffer just the right size");
|
|
ret = LZ4_compress_HC(block, compressedBuffer, blockSize, HCcompressedSize, compressionLevel);
|
|
FUZ_CHECKTEST(ret==0, "LZ4_compress_HC() failed despite sufficient space");
|
|
|
|
/* Test HC compression with output size being exactly what's necessary (should work) */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC_extStateHC() with output buffer just the right size");
|
|
ret = LZ4_compress_HC_extStateHC(stateLZ4HC, block, compressedBuffer, blockSize, HCcompressedSize, compressionLevel);
|
|
FUZ_CHECKTEST(ret==0, "LZ4_compress_HC_extStateHC() failed despite sufficient space");
|
|
|
|
/* Test compression with missing bytes into output buffer => must fail */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_default() with output buffer a bit too short");
|
|
{ int missingBytes = (FUZ_rand(&randState) % 0x3F) + 1;
|
|
if (missingBytes >= compressedSize) missingBytes = compressedSize-1;
|
|
missingBytes += !missingBytes; /* avoid special case missingBytes==0 */
|
|
compressedBuffer[compressedSize-missingBytes] = 0;
|
|
ret = LZ4_compress_default(block, compressedBuffer, blockSize, compressedSize-missingBytes);
|
|
FUZ_CHECKTEST(ret, "LZ4_compress_default should have failed (output buffer too small by %i byte)", missingBytes);
|
|
FUZ_CHECKTEST(compressedBuffer[compressedSize-missingBytes], "LZ4_compress_default overran output buffer ! (%i missingBytes)", missingBytes)
|
|
}
|
|
|
|
/* Test HC compression with missing bytes into output buffer => must fail */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_HC() with output buffer a bit too short");
|
|
{ int missingBytes = (FUZ_rand(&randState) % 0x3F) + 1;
|
|
if (missingBytes >= HCcompressedSize) missingBytes = HCcompressedSize-1;
|
|
missingBytes += !missingBytes; /* avoid special case missingBytes==0 */
|
|
compressedBuffer[HCcompressedSize-missingBytes] = 0;
|
|
ret = LZ4_compress_HC(block, compressedBuffer, blockSize, HCcompressedSize-missingBytes, compressionLevel);
|
|
FUZ_CHECKTEST(ret, "LZ4_compress_HC should have failed (output buffer too small by %i byte)", missingBytes);
|
|
FUZ_CHECKTEST(compressedBuffer[HCcompressedSize-missingBytes], "LZ4_compress_HC overran output buffer ! (%i missingBytes)", missingBytes)
|
|
}
|
|
|
|
|
|
/*-******************/
|
|
/* Dictionary tests */
|
|
/*-******************/
|
|
|
|
/* Compress using dictionary */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_continue() with dictionary of size %i", dictSize);
|
|
{ LZ4_stream_t LZ4_stream;
|
|
LZ4_initStream(&LZ4_stream, sizeof(LZ4_stream));
|
|
LZ4_compress_fast_continue (&LZ4_stream, dict, compressedBuffer, dictSize, (int)compressedBufferSize, 1); /* Just to fill hash tables */
|
|
blockContinueCompressedSize = LZ4_compress_fast_continue (&LZ4_stream, block, compressedBuffer, blockSize, (int)compressedBufferSize, 1);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_fast_continue failed");
|
|
}
|
|
|
|
/* Decompress with dictionary as prefix */
|
|
FUZ_DISPLAYTEST("test LZ4_decompress_fast_usingDict() with dictionary as prefix");
|
|
memcpy(decodedBuffer, dict, dictSize);
|
|
ret = LZ4_decompress_fast_usingDict(compressedBuffer, decodedBuffer+dictSize, blockSize, decodedBuffer, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_decompress_fast_usingDict did not read all compressed block input");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer+dictSize, (size_t)blockSize, 0);
|
|
if (crcCheck!=crcOrig) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_fast_usingDict corrupted decoded data (dict %i)", dictSize);
|
|
}
|
|
}
|
|
|
|
FUZ_DISPLAYTEST("test LZ4_decompress_safe_usingDict()");
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer+dictSize, blockContinueCompressedSize, blockSize, decodedBuffer, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer+dictSize, (size_t)blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
}
|
|
|
|
/* Compress using External dictionary */
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_continue(), with non-contiguous dictionary");
|
|
dict -= (size_t)(FUZ_rand(&randState) & 0xF) + 1; /* create space, so now dictionary is an ExtDict */
|
|
if (dict < (char*)CNBuffer) dict = (char*)CNBuffer;
|
|
LZ4_loadDict(&LZ4dictBody, dict, dictSize);
|
|
blockContinueCompressedSize = LZ4_compress_fast_continue(&LZ4dictBody, block, compressedBuffer, blockSize, (int)compressedBufferSize, 1);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_fast_continue failed");
|
|
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_continue() with dictionary but with an output buffer too short by one byte");
|
|
LZ4_loadDict(&LZ4dictBody, dict, dictSize);
|
|
ret = LZ4_compress_fast_continue(&LZ4dictBody, block, compressedBuffer, blockSize, blockContinueCompressedSize-1, 1);
|
|
FUZ_CHECKTEST(ret>0, "LZ4_compress_fast_continue using ExtDict should fail : one missing byte for output buffer : %i written, %i buffer", ret, blockContinueCompressedSize);
|
|
|
|
FUZ_DISPLAYTEST("test LZ4_compress_fast_continue() with dictionary loaded with LZ4_loadDict()");
|
|
DISPLAYLEVEL(5, " compress %i bytes from buffer(%p) into dst(%p) using dict(%p) of size %i \n",
|
|
blockSize, (const void *)block, (void *)decodedBuffer, (const void *)dict, dictSize);
|
|
LZ4_loadDict(&LZ4dictBody, dict, dictSize);
|
|
ret = LZ4_compress_fast_continue(&LZ4dictBody, block, compressedBuffer, blockSize, blockContinueCompressedSize, 1);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_limitedOutput_compressed size is different (%i != %i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_fast_continue should work : enough size available within output buffer");
|
|
|
|
/* Decompress with dictionary as external */
|
|
FUZ_DISPLAYTEST("test LZ4_decompress_fast_usingDict() with dictionary as extDict");
|
|
DISPLAYLEVEL(5, " decoding %i bytes from buffer(%p) using dict(%p) of size %i \n",
|
|
blockSize, (void *)decodedBuffer, (const void *)dict, dictSize);
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_fast_usingDict(compressedBuffer, decodedBuffer, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_decompress_fast_usingDict did not read all compressed block input");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_fast_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
if (crcCheck!=crcOrig) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_fast_usingDict corrupted decoded data (dict %i)", dictSize);
|
|
}
|
|
}
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
}
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize-1] = 0;
|
|
ret = LZ4_decompress_fast_usingDict(compressedBuffer, decodedBuffer, blockSize-1, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_fast_usingDict should have failed : wrong original size (-1 byte)");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1], "LZ4_decompress_fast_usingDict overrun specified output buffer size");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize-1] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize-1, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_safe_usingDict should have failed : not enough output size (-1 byte)");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
{ U32 const missingBytes = (FUZ_rand(&randState) & 0xF) + 2;
|
|
if ((U32)blockSize > missingBytes) {
|
|
decodedBuffer[blockSize-missingBytes] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize-missingBytes, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_safe_usingDict should have failed : output buffer too small (-%u byte)", missingBytes);
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-missingBytes], "LZ4_decompress_safe_usingDict overrun specified output buffer size (-%u byte) (blockSize=%i)", missingBytes, blockSize);
|
|
} }
|
|
|
|
/* Compress using external dictionary stream */
|
|
{
|
|
LZ4_stream_t LZ4_stream;
|
|
int expectedSize;
|
|
U32 expectedCrc;
|
|
|
|
FUZ_DISPLAYTEST("LZ4_compress_fast_continue() after LZ4_loadDict()");
|
|
LZ4_loadDict(&LZ4dictBody, dict, dictSize);
|
|
expectedSize = LZ4_compress_fast_continue(&LZ4dictBody, block, compressedBuffer, blockSize, (int)compressedBufferSize, 1);
|
|
FUZ_CHECKTEST(expectedSize<=0, "LZ4_compress_fast_continue reference compression for extDictCtx should have succeeded");
|
|
expectedCrc = XXH32(compressedBuffer, expectedSize, 0);
|
|
|
|
FUZ_DISPLAYTEST("LZ4_compress_fast_continue() after LZ4_attach_dictionary()");
|
|
LZ4_loadDict(&LZ4dictBody, dict, dictSize);
|
|
LZ4_initStream(&LZ4_stream, sizeof(LZ4_stream));
|
|
LZ4_attach_dictionary(&LZ4_stream, &LZ4dictBody);
|
|
blockContinueCompressedSize = LZ4_compress_fast_continue(&LZ4_stream, block, compressedBuffer, blockSize, (int)compressedBufferSize, 1);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_fast_continue using extDictCtx failed");
|
|
FUZ_CHECKTEST(LZ4_stream.internal_donotuse.dirty, "context should be good");
|
|
|
|
/* In the future, it might be desirable to let extDictCtx mode's
|
|
* output diverge from the output generated by regular extDict mode.
|
|
* Until that time, this comparison serves as a good regression
|
|
* test.
|
|
*/
|
|
FUZ_CHECKTEST(blockContinueCompressedSize != expectedSize, "LZ4_compress_fast_continue using extDictCtx produced different-sized output (%d expected vs %d actual)", expectedSize, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(XXH32(compressedBuffer, blockContinueCompressedSize, 0) != expectedCrc, "LZ4_compress_fast_continue using extDictCtx produced different output");
|
|
|
|
FUZ_DISPLAYTEST("LZ4_compress_fast_continue() after LZ4_attach_dictionary(), but output buffer is 1 byte too short");
|
|
LZ4_resetStream_fast(&LZ4_stream);
|
|
LZ4_attach_dictionary(&LZ4_stream, &LZ4dictBody);
|
|
ret = LZ4_compress_fast_continue(&LZ4_stream, block, compressedBuffer, blockSize, blockContinueCompressedSize-1, 1);
|
|
FUZ_CHECKTEST(ret>0, "LZ4_compress_fast_continue using extDictCtx should fail : one missing byte for output buffer : %i written, %i buffer", ret, blockContinueCompressedSize);
|
|
/* note : context is no longer dirty after a failed compressed block */
|
|
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_resetStream_fast(&LZ4_stream);
|
|
LZ4_attach_dictionary(&LZ4_stream, &LZ4dictBody);
|
|
ret = LZ4_compress_fast_continue(&LZ4_stream, block, compressedBuffer, blockSize, blockContinueCompressedSize, 1);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_limitedOutput_compressed size is different (%i != %i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_fast_continue using extDictCtx should work : enough size available within output buffer");
|
|
FUZ_CHECKTEST(ret != expectedSize, "LZ4_compress_fast_continue using extDictCtx produced different-sized output");
|
|
FUZ_CHECKTEST(XXH32(compressedBuffer, ret, 0) != expectedCrc, "LZ4_compress_fast_continue using extDictCtx produced different output");
|
|
FUZ_CHECKTEST(LZ4_stream.internal_donotuse.dirty, "context should be good");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_resetStream_fast(&LZ4_stream);
|
|
LZ4_attach_dictionary(&LZ4_stream, &LZ4dictBody);
|
|
ret = LZ4_compress_fast_continue(&LZ4_stream, block, compressedBuffer, blockSize, blockContinueCompressedSize, 1);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_limitedOutput_compressed size is different (%i != %i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_fast_continue using extDictCtx with re-used context should work : enough size available within output buffer");
|
|
FUZ_CHECKTEST(ret != expectedSize, "LZ4_compress_fast_continue using extDictCtx produced different-sized output");
|
|
FUZ_CHECKTEST(XXH32(compressedBuffer, ret, 0) != expectedCrc, "LZ4_compress_fast_continue using extDictCtx produced different output");
|
|
FUZ_CHECKTEST(LZ4_stream.internal_donotuse.dirty, "context should be good");
|
|
}
|
|
|
|
/* Decompress with dictionary as external */
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_fast_usingDict(compressedBuffer, decodedBuffer, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_decompress_fast_usingDict did not read all compressed block input");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_fast_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, blockSize, 0);
|
|
if (crcCheck!=crcOrig) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_fast_usingDict corrupted decoded data (dict %i)", dictSize);
|
|
}
|
|
}
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
FUZ_CHECKTEST(crcCheck!=crcOrig, "LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
}
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize-1] = 0;
|
|
ret = LZ4_decompress_fast_usingDict(compressedBuffer, decodedBuffer, blockSize-1, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_fast_usingDict should have failed : wrong original size (-1 byte)");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1], "LZ4_decompress_fast_usingDict overrun specified output buffer size");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize-1] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize-1, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_safe_usingDict should have failed : not enough output size (-1 byte)");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-1], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
|
|
FUZ_DISPLAYTEST("LZ4_decompress_safe_usingDict with a too small output buffer");
|
|
{ U32 const missingBytes = (FUZ_rand(&randState) & 0xF) + 2;
|
|
if ((U32)blockSize > missingBytes) {
|
|
decodedBuffer[blockSize-missingBytes] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize-missingBytes, dict, dictSize);
|
|
FUZ_CHECKTEST(ret>=0, "LZ4_decompress_safe_usingDict should have failed : output buffer too small (-%u byte)", missingBytes);
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize-missingBytes], "LZ4_decompress_safe_usingDict overrun specified output buffer size (-%u byte) (blockSize=%i)", missingBytes, blockSize);
|
|
} }
|
|
|
|
/* Compress HC using External dictionary */
|
|
FUZ_DISPLAYTEST("LZ4_compress_HC_continue with an external dictionary");
|
|
dict -= (FUZ_rand(&randState) & 7); /* even bigger separation */
|
|
if (dict < (char*)CNBuffer) dict = (char*)CNBuffer;
|
|
LZ4_loadDictHC(LZ4dictHC, dict, dictSize);
|
|
LZ4_setCompressionLevel (LZ4dictHC, compressionLevel);
|
|
blockContinueCompressedSize = LZ4_compress_HC_continue(LZ4dictHC, block, compressedBuffer, blockSize, (int)compressedBufferSize);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_HC_continue failed");
|
|
FUZ_CHECKTEST(LZ4dictHC->internal_donotuse.dirty, "Context should be clean");
|
|
|
|
FUZ_DISPLAYTEST("LZ4_compress_HC_continue with same external dictionary, but output buffer 1 byte too short");
|
|
LZ4_loadDictHC(LZ4dictHC, dict, dictSize);
|
|
ret = LZ4_compress_HC_continue(LZ4dictHC, block, compressedBuffer, blockSize, blockContinueCompressedSize-1);
|
|
FUZ_CHECKTEST(ret>0, "LZ4_compress_HC_continue using ExtDict should fail : one missing byte for output buffer (expected %i, but result=%i)", blockContinueCompressedSize, ret);
|
|
/* note : context is no longer dirty after a failed compressed block */
|
|
|
|
FUZ_DISPLAYTEST("LZ4_compress_HC_continue with same external dictionary, and output buffer exactly the right size");
|
|
LZ4_loadDictHC(LZ4dictHC, dict, dictSize);
|
|
ret = LZ4_compress_HC_continue(LZ4dictHC, block, compressedBuffer, blockSize, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_HC_continue size is different : ret(%i) != expected(%i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_HC_continue should work : enough size available within output buffer");
|
|
FUZ_CHECKTEST(LZ4dictHC->internal_donotuse.dirty, "Context should be clean");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
if (crcCheck!=crcOrig) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
} }
|
|
|
|
/* Compress HC using external dictionary stream */
|
|
FUZ_DISPLAYTEST();
|
|
{ LZ4_streamHC_t* const LZ4_streamHC = LZ4_createStreamHC();
|
|
|
|
LZ4_loadDictHC(LZ4dictHC, dict, dictSize);
|
|
LZ4_attach_HC_dictionary(LZ4_streamHC, LZ4dictHC);
|
|
LZ4_setCompressionLevel (LZ4_streamHC, compressionLevel);
|
|
blockContinueCompressedSize = LZ4_compress_HC_continue(LZ4_streamHC, block, compressedBuffer, blockSize, (int)compressedBufferSize);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_HC_continue with ExtDictCtx failed");
|
|
FUZ_CHECKTEST(LZ4_streamHC->internal_donotuse.dirty, "Context should be clean");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_resetStreamHC_fast (LZ4_streamHC, compressionLevel);
|
|
LZ4_attach_HC_dictionary(LZ4_streamHC, LZ4dictHC);
|
|
ret = LZ4_compress_HC_continue(LZ4_streamHC, block, compressedBuffer, blockSize, blockContinueCompressedSize-1);
|
|
FUZ_CHECKTEST(ret>0, "LZ4_compress_HC_continue using ExtDictCtx should fail : one missing byte for output buffer (%i != %i)", ret, blockContinueCompressedSize);
|
|
/* note : context is no longer dirty after a failed compressed block */
|
|
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_resetStreamHC_fast (LZ4_streamHC, compressionLevel);
|
|
LZ4_attach_HC_dictionary(LZ4_streamHC, LZ4dictHC);
|
|
ret = LZ4_compress_HC_continue(LZ4_streamHC, block, compressedBuffer, blockSize, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_HC_continue using ExtDictCtx size is different (%i != %i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_HC_continue using ExtDictCtx should work : enough size available within output buffer");
|
|
FUZ_CHECKTEST(LZ4_streamHC->internal_donotuse.dirty, "Context should be clean");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_resetStreamHC_fast (LZ4_streamHC, compressionLevel);
|
|
LZ4_attach_HC_dictionary(LZ4_streamHC, LZ4dictHC);
|
|
ret = LZ4_compress_HC_continue(LZ4_streamHC, block, compressedBuffer, blockSize, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret!=blockContinueCompressedSize, "LZ4_compress_HC_continue using ExtDictCtx and fast reset size is different (%i != %i)", ret, blockContinueCompressedSize);
|
|
FUZ_CHECKTEST(ret<=0, "LZ4_compress_HC_continue using ExtDictCtx and fast reset should work : enough size available within output buffer");
|
|
FUZ_CHECKTEST(LZ4_streamHC->internal_donotuse.dirty, "Context should be clean");
|
|
|
|
LZ4_freeStreamHC(LZ4_streamHC);
|
|
}
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[blockSize] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, blockSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=blockSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
FUZ_CHECKTEST(decodedBuffer[blockSize], "LZ4_decompress_safe_usingDict overrun specified output buffer size");
|
|
{ U32 const crcCheck = XXH32(decodedBuffer, (size_t)blockSize, 0);
|
|
if (crcCheck!=crcOrig) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
} }
|
|
|
|
/* Compress HC continue destSize */
|
|
FUZ_DISPLAYTEST();
|
|
{ int const availableSpace = (int)(FUZ_rand(&randState) % blockSize) + 5;
|
|
int consumedSize = blockSize;
|
|
FUZ_DISPLAYTEST();
|
|
LZ4_loadDictHC(LZ4dictHC, dict, dictSize);
|
|
LZ4_setCompressionLevel(LZ4dictHC, compressionLevel);
|
|
blockContinueCompressedSize = LZ4_compress_HC_continue_destSize(LZ4dictHC, block, compressedBuffer, &consumedSize, availableSpace);
|
|
DISPLAYLEVEL(5, " LZ4_compress_HC_continue_destSize : compressed %6i/%6i into %6i/%6i at cLevel=%i\n", consumedSize, blockSize, blockContinueCompressedSize, availableSpace, compressionLevel);
|
|
FUZ_CHECKTEST(blockContinueCompressedSize==0, "LZ4_compress_HC_continue_destSize failed");
|
|
FUZ_CHECKTEST(blockContinueCompressedSize > availableSpace, "LZ4_compress_HC_continue_destSize write overflow");
|
|
FUZ_CHECKTEST(consumedSize > blockSize, "LZ4_compress_HC_continue_destSize read overflow");
|
|
|
|
FUZ_DISPLAYTEST();
|
|
decodedBuffer[consumedSize] = 0;
|
|
ret = LZ4_decompress_safe_usingDict(compressedBuffer, decodedBuffer, blockContinueCompressedSize, consumedSize, dict, dictSize);
|
|
FUZ_CHECKTEST(ret!=consumedSize, "LZ4_decompress_safe_usingDict did not regenerate original data");
|
|
FUZ_CHECKTEST(decodedBuffer[consumedSize], "LZ4_decompress_safe_usingDict overrun specified output buffer size")
|
|
{ U32 const crcSrc = XXH32(block, (size_t)consumedSize, 0);
|
|
U32 const crcDst = XXH32(decodedBuffer, (size_t)consumedSize, 0);
|
|
if (crcSrc!=crcDst) {
|
|
FUZ_findDiff(block, decodedBuffer);
|
|
EXIT_MSG("LZ4_decompress_safe_usingDict corrupted decoded data");
|
|
} }
|
|
}
|
|
|
|
/* ***** End of tests *** */
|
|
/* Fill stats */
|
|
bytes += blockSize;
|
|
cbytes += compressedSize;
|
|
hcbytes += HCcompressedSize;
|
|
ccbytes += blockContinueCompressedSize;
|
|
}
|
|
|
|
if (nbCycles<=1) nbCycles = cycleNb; /* end by time */
|
|
bytes += !bytes; /* avoid division by 0 */
|
|
printf("\r%7u /%7u - ", cycleNb, nbCycles);
|
|
printf("all tests completed successfully \n");
|
|
printf("compression ratio: %0.3f%%\n", (double)cbytes/bytes*100);
|
|
printf("HC compression ratio: %0.3f%%\n", (double)hcbytes/bytes*100);
|
|
printf("ratio with dict: %0.3f%%\n", (double)ccbytes/bytes*100);
|
|
|
|
/* release memory */
|
|
free(CNBuffer);
|
|
free(compressedBuffer);
|
|
free(decodedBuffer);
|
|
FUZ_freeLowAddr(lowAddrBuffer, labSize);
|
|
LZ4_freeStreamHC(LZ4dictHC);
|
|
free(stateLZ4);
|
|
free(stateLZ4HC);
|
|
return result;
|
|
}
|
|
|
|
|
|
#define testInputSize (196 KB)
|
|
#define testCompressedSize (130 KB)
|
|
#define ringBufferSize (8 KB)
|
|
|
|
static void FUZ_unitTests(int compressionLevel)
|
|
{
|
|
const unsigned testNb = 0;
|
|
const unsigned seed = 0;
|
|
const unsigned cycleNb= 0;
|
|
char* testInput = (char*)malloc(testInputSize);
|
|
char* testCompressed = (char*)malloc(testCompressedSize);
|
|
char* testVerify = (char*)malloc(testInputSize);
|
|
char ringBuffer[ringBufferSize] = {0};
|
|
U32 randState = 1;
|
|
|
|
/* Init */
|
|
if (!testInput || !testCompressed || !testVerify) {
|
|
EXIT_MSG("not enough memory for FUZ_unitTests");
|
|
}
|
|
FUZ_fillCompressibleNoiseBuffer(testInput, testInputSize, 0.50, &randState);
|
|
|
|
/* 32-bits address space overflow test */
|
|
FUZ_AddressOverflow();
|
|
|
|
/* Test decoding with empty input */
|
|
DISPLAYLEVEL(3, "LZ4_decompress_safe() with empty input \n");
|
|
LZ4_decompress_safe(testCompressed, testVerify, 0, testInputSize);
|
|
|
|
/* Test decoding with a one byte input */
|
|
DISPLAYLEVEL(3, "LZ4_decompress_safe() with one byte input \n");
|
|
{ char const tmp = (char)0xFF;
|
|
LZ4_decompress_safe(&tmp, testVerify, 1, testInputSize);
|
|
}
|
|
|
|
/* Test decoding shortcut edge case */
|
|
DISPLAYLEVEL(3, "LZ4_decompress_safe() with shortcut edge case \n");
|
|
{ char tmp[17];
|
|
/* 14 bytes of literals, followed by a 14 byte match.
|
|
* Should not read beyond the end of the buffer.
|
|
* See https://github.com/lz4/lz4/issues/508. */
|
|
*tmp = (char)0xEE;
|
|
memset(tmp + 1, 0, 14);
|
|
tmp[15] = 14;
|
|
tmp[16] = 0;
|
|
{ int const r = LZ4_decompress_safe(tmp, testVerify, sizeof(tmp), testInputSize);
|
|
FUZ_CHECKTEST(r >= 0, "LZ4_decompress_safe() should fail");
|
|
} }
|
|
|
|
/* in-place compression test */
|
|
DISPLAYLEVEL(3, "in-place compression using LZ4_compress_default() :");
|
|
{ int const sampleSize = 65 KB;
|
|
int const maxCSize = LZ4_COMPRESSBOUND(sampleSize);
|
|
int const outSize = LZ4_COMPRESS_INPLACE_BUFFER_SIZE(maxCSize);
|
|
int const startIndex = outSize - sampleSize;
|
|
char* const startInput = testCompressed + startIndex;
|
|
XXH32_hash_t const crcOrig = XXH32(testInput, sampleSize, 0);
|
|
int cSize;
|
|
assert(outSize < (int)testCompressedSize);
|
|
memcpy(startInput, testInput, sampleSize); /* copy at end of buffer */
|
|
/* compress in-place */
|
|
cSize = LZ4_compress_default(startInput, testCompressed, sampleSize, maxCSize);
|
|
assert(cSize != 0); /* ensure compression is successful */
|
|
assert(maxCSize < INT_MAX);
|
|
assert(cSize <= maxCSize);
|
|
/* decompress and verify */
|
|
{ int const dSize = LZ4_decompress_safe(testCompressed, testVerify, cSize, testInputSize);
|
|
assert(dSize == (int)sampleSize); /* correct size */
|
|
{ XXH32_hash_t const crcCheck = XXH32(testVerify, (size_t)dSize, 0);
|
|
assert(crcCheck == crcOrig);
|
|
} } }
|
|
DISPLAYLEVEL(3, " OK \n");
|
|
|
|
/* LZ4 streaming tests */
|
|
{ LZ4_stream_t streamingState;
|
|
U64 crcOrig;
|
|
int result;
|
|
|
|
/* Allocation test */
|
|
{ LZ4_stream_t* const statePtr = LZ4_createStream();
|
|
FUZ_CHECKTEST(statePtr==NULL, "LZ4_createStream() allocation failed");
|
|
LZ4_freeStream(statePtr);
|
|
}
|
|
|
|
/* simple compression test */
|
|
crcOrig = XXH64(testInput, testCompressedSize, 0);
|
|
LZ4_initStream(&streamingState, sizeof(streamingState));
|
|
result = LZ4_compress_fast_continue(&streamingState, testInput, testCompressed, testCompressedSize, testCompressedSize-1, 1);
|
|
FUZ_CHECKTEST(result==0, "LZ4_compress_fast_continue() compression failed!");
|
|
FUZ_CHECKTEST(streamingState.internal_donotuse.dirty, "context should be clean")
|
|
|
|
result = LZ4_decompress_safe(testCompressed, testVerify, result, testCompressedSize);
|
|
FUZ_CHECKTEST(result!=(int)testCompressedSize, "LZ4_decompress_safe() decompression failed");
|
|
{ U64 const crcNew = XXH64(testVerify, testCompressedSize, 0);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe() decompression corruption"); }
|
|
|
|
/* ring buffer test */
|
|
{ XXH64_state_t xxhOrig;
|
|
XXH64_state_t xxhNewSafe, xxhNewFast;
|
|
LZ4_streamDecode_t decodeStateSafe, decodeStateFast;
|
|
const U32 maxMessageSizeLog = 10;
|
|
const U32 maxMessageSizeMask = (1<<maxMessageSizeLog) - 1;
|
|
U32 messageSize = (FUZ_rand(&randState) & maxMessageSizeMask) + 1;
|
|
U32 iNext = 0;
|
|
U32 rNext = 0;
|
|
U32 dNext = 0;
|
|
const U32 dBufferSize = ringBufferSize + maxMessageSizeMask;
|
|
|
|
XXH64_reset(&xxhOrig, 0);
|
|
XXH64_reset(&xxhNewSafe, 0);
|
|
XXH64_reset(&xxhNewFast, 0);
|
|
LZ4_resetStream_fast(&streamingState);
|
|
LZ4_setStreamDecode(&decodeStateSafe, NULL, 0);
|
|
LZ4_setStreamDecode(&decodeStateFast, NULL, 0);
|
|
|
|
while (iNext + messageSize < testCompressedSize) {
|
|
int compressedSize;
|
|
XXH64_update(&xxhOrig, testInput + iNext, messageSize);
|
|
crcOrig = XXH64_digest(&xxhOrig);
|
|
|
|
memcpy (ringBuffer + rNext, testInput + iNext, messageSize);
|
|
compressedSize = LZ4_compress_fast_continue(&streamingState, ringBuffer + rNext, testCompressed, (int)messageSize, testCompressedSize-ringBufferSize, 1);
|
|
FUZ_CHECKTEST(compressedSize==0, "LZ4_compress_fast_continue() compression failed");
|
|
|
|
result = LZ4_decompress_safe_continue(&decodeStateSafe, testCompressed, testVerify + dNext, compressedSize, (int)messageSize);
|
|
FUZ_CHECKTEST(result!=(int)messageSize, "ringBuffer : LZ4_decompress_safe_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewSafe, testVerify + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewSafe);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe_continue() decompression corruption"); }
|
|
|
|
result = LZ4_decompress_fast_continue(&decodeStateFast, testCompressed, testVerify + dNext, (int)messageSize);
|
|
FUZ_CHECKTEST(result!=compressedSize, "ringBuffer : LZ4_decompress_fast_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewFast, testVerify + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewFast);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_fast_continue() decompression corruption"); }
|
|
|
|
/* prepare next message */
|
|
iNext += messageSize;
|
|
rNext += messageSize;
|
|
dNext += messageSize;
|
|
messageSize = (FUZ_rand(&randState) & maxMessageSizeMask) + 1;
|
|
if (rNext + messageSize > ringBufferSize) rNext = 0;
|
|
if (dNext + messageSize > dBufferSize) dNext = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* LZ4 HC streaming tests */
|
|
{ LZ4_streamHC_t sHC; /* statically allocated */
|
|
U64 crcOrig;
|
|
int result;
|
|
LZ4_initStreamHC(&sHC, sizeof(sHC));
|
|
|
|
/* Allocation test */
|
|
DISPLAYLEVEL(3, " Basic HC allocation : ");
|
|
{ LZ4_streamHC_t* const sp = LZ4_createStreamHC();
|
|
FUZ_CHECKTEST(sp==NULL, "LZ4_createStreamHC() allocation failed");
|
|
LZ4_freeStreamHC(sp);
|
|
}
|
|
DISPLAYLEVEL(3, " OK \n");
|
|
|
|
/* simple HC compression test */
|
|
DISPLAYLEVEL(3, " Simple HC round-trip : ");
|
|
{ U64 const crc64 = XXH64(testInput, testCompressedSize, 0);
|
|
LZ4_setCompressionLevel(&sHC, compressionLevel);
|
|
result = LZ4_compress_HC_continue(&sHC, testInput, testCompressed, testCompressedSize, testCompressedSize-1);
|
|
FUZ_CHECKTEST(result==0, "LZ4_compressHC_limitedOutput_continue() compression failed");
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe(testCompressed, testVerify, result, testCompressedSize);
|
|
FUZ_CHECKTEST(result!=(int)testCompressedSize, "LZ4_decompress_safe() decompression failed");
|
|
{ U64 const crcNew = XXH64(testVerify, testCompressedSize, 0);
|
|
FUZ_CHECKTEST(crc64!=crcNew, "LZ4_decompress_safe() decompression corruption");
|
|
} }
|
|
DISPLAYLEVEL(3, " OK \n");
|
|
|
|
/* long sequence test */
|
|
DISPLAYLEVEL(3, " Long sequence HC test : ");
|
|
{ size_t const blockSize = 1 MB;
|
|
size_t const targetSize = 4116; /* size carefully selected to trigger an overflow */
|
|
void* const block = malloc(blockSize);
|
|
void* const dstBlock = malloc(targetSize+1);
|
|
BYTE const sentinel = 101;
|
|
int srcSize;
|
|
|
|
assert(block != NULL); assert(dstBlock != NULL);
|
|
memset(block, 0, blockSize);
|
|
((char*)dstBlock)[targetSize] = sentinel;
|
|
|
|
LZ4_resetStreamHC_fast(&sHC, 3);
|
|
assert(blockSize < INT_MAX);
|
|
srcSize = (int)blockSize;
|
|
assert(targetSize < INT_MAX);
|
|
result = LZ4_compress_HC_destSize(&sHC, (const char*)block, (char*)dstBlock, &srcSize, (int)targetSize, 3);
|
|
DISPLAYLEVEL(4, "cSize=%i; readSize=%i; ", result, srcSize);
|
|
FUZ_CHECKTEST(result!=4116, "LZ4_compress_HC_destSize() : compression must fill dstBuffer completely, but no more !");
|
|
FUZ_CHECKTEST(((char*)dstBlock)[targetSize] != sentinel, "LZ4_compress_HC_destSize()")
|
|
|
|
LZ4_resetStreamHC_fast(&sHC, 3); /* make sure the context is clean after the test */
|
|
free(block);
|
|
free(dstBlock);
|
|
}
|
|
DISPLAYLEVEL(3, " OK \n");
|
|
|
|
/* simple dictionary HC compression test */
|
|
DISPLAYLEVEL(3, " HC dictionary compression test : ");
|
|
{ U64 const crc64 = XXH64(testInput + 64 KB, testCompressedSize, 0);
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_loadDictHC(&sHC, testInput, 64 KB);
|
|
{ int const cSize = LZ4_compress_HC_continue(&sHC, testInput + 64 KB, testCompressed, testCompressedSize, testCompressedSize-1);
|
|
FUZ_CHECKTEST(cSize==0, "LZ4_compressHC_limitedOutput_continue() dictionary compression failed : @return = %i", cSize);
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
{ int const dSize = LZ4_decompress_safe_usingDict(testCompressed, testVerify, cSize, testCompressedSize, testInput, 64 KB);
|
|
FUZ_CHECKTEST(dSize!=(int)testCompressedSize, "LZ4_decompress_safe() simple dictionary decompression test failed");
|
|
} }
|
|
{ U64 const crcNew = XXH64(testVerify, testCompressedSize, 0);
|
|
FUZ_CHECKTEST(crc64!=crcNew, "LZ4_decompress_safe() simple dictionary decompression test : corruption");
|
|
} }
|
|
DISPLAYLEVEL(3, " OK \n");
|
|
|
|
/* multiple HC compression test with dictionary */
|
|
{ int result1, result2;
|
|
int segSize = testCompressedSize / 2;
|
|
XXH64_hash_t const crc64 = ( (void)assert((unsigned)segSize + testCompressedSize < testInputSize) ,
|
|
XXH64(testInput + segSize, testCompressedSize, 0) );
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_loadDictHC(&sHC, testInput, segSize);
|
|
result1 = LZ4_compress_HC_continue(&sHC, testInput + segSize, testCompressed, segSize, segSize -1);
|
|
FUZ_CHECKTEST(result1==0, "LZ4_compressHC_limitedOutput_continue() dictionary compression failed : result = %i", result1);
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
result2 = LZ4_compress_HC_continue(&sHC, testInput + 2*(size_t)segSize, testCompressed+result1, segSize, segSize-1);
|
|
FUZ_CHECKTEST(result2==0, "LZ4_compressHC_limitedOutput_continue() dictionary compression failed : result = %i", result2);
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe_usingDict(testCompressed, testVerify, result1, segSize, testInput, segSize);
|
|
FUZ_CHECKTEST(result!=segSize, "LZ4_decompress_safe() dictionary decompression part 1 failed");
|
|
result = LZ4_decompress_safe_usingDict(testCompressed+result1, testVerify+segSize, result2, segSize, testInput, 2*segSize);
|
|
FUZ_CHECKTEST(result!=segSize, "LZ4_decompress_safe() dictionary decompression part 2 failed");
|
|
{ XXH64_hash_t const crcNew = XXH64(testVerify, testCompressedSize, 0);
|
|
FUZ_CHECKTEST(crc64!=crcNew, "LZ4_decompress_safe() dictionary decompression corruption");
|
|
} }
|
|
|
|
/* remote dictionary HC compression test */
|
|
{ U64 const crc64 = XXH64(testInput + 64 KB, testCompressedSize, 0);
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_loadDictHC(&sHC, testInput, 32 KB);
|
|
result = LZ4_compress_HC_continue(&sHC, testInput + 64 KB, testCompressed, testCompressedSize, testCompressedSize-1);
|
|
FUZ_CHECKTEST(result==0, "LZ4_compressHC_limitedOutput_continue() remote dictionary failed : result = %i", result);
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe_usingDict(testCompressed, testVerify, result, testCompressedSize, testInput, 32 KB);
|
|
FUZ_CHECKTEST(result!=(int)testCompressedSize, "LZ4_decompress_safe_usingDict() decompression failed following remote dictionary HC compression test");
|
|
{ U64 const crcNew = XXH64(testVerify, testCompressedSize, 0);
|
|
FUZ_CHECKTEST(crc64!=crcNew, "LZ4_decompress_safe_usingDict() decompression corruption");
|
|
} }
|
|
|
|
/* multiple HC compression with ext. dictionary */
|
|
{ XXH64_state_t crcOrigState;
|
|
XXH64_state_t crcNewState;
|
|
const char* dict = testInput + 3;
|
|
int dictSize = (FUZ_rand(&randState) & 8191);
|
|
char* dst = testVerify;
|
|
|
|
size_t segStart = (size_t)dictSize + 7;
|
|
int segSize = (FUZ_rand(&randState) & 8191);
|
|
int segNb = 1;
|
|
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_loadDictHC(&sHC, dict, dictSize);
|
|
|
|
XXH64_reset(&crcOrigState, 0);
|
|
XXH64_reset(&crcNewState, 0);
|
|
|
|
while (segStart + segSize < testInputSize) {
|
|
XXH64_update(&crcOrigState, testInput + segStart, segSize);
|
|
crcOrig = XXH64_digest(&crcOrigState);
|
|
result = LZ4_compress_HC_continue(&sHC, testInput + segStart, testCompressed, segSize, LZ4_compressBound(segSize));
|
|
FUZ_CHECKTEST(result==0, "LZ4_compressHC_limitedOutput_continue() dictionary compression failed : result = %i", result);
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe_usingDict(testCompressed, dst, result, segSize, dict, dictSize);
|
|
FUZ_CHECKTEST(result!=segSize, "LZ4_decompress_safe_usingDict() dictionary decompression part %i failed", segNb);
|
|
XXH64_update(&crcNewState, dst, segSize);
|
|
{ U64 const crcNew = XXH64_digest(&crcNewState);
|
|
if (crcOrig != crcNew) FUZ_findDiff(dst, testInput+segStart);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe_usingDict() part %i corruption", segNb);
|
|
}
|
|
|
|
assert(segSize >= 0);
|
|
dict = dst;
|
|
dictSize = segSize;
|
|
|
|
dst += (size_t)segSize + 1;
|
|
segNb ++;
|
|
|
|
segStart += (size_t)segSize + (FUZ_rand(&randState) & 0xF) + 1;
|
|
segSize = (FUZ_rand(&randState) & 8191);
|
|
}
|
|
}
|
|
|
|
/* ring buffer test */
|
|
{ XXH64_state_t xxhOrig;
|
|
XXH64_state_t xxhNewSafe, xxhNewFast;
|
|
LZ4_streamDecode_t decodeStateSafe, decodeStateFast;
|
|
const U32 maxMessageSizeLog = 10;
|
|
const U32 maxMessageSizeMask = (1<<maxMessageSizeLog) - 1;
|
|
U32 messageSize = (FUZ_rand(&randState) & maxMessageSizeMask) + 1;
|
|
U32 iNext = 0;
|
|
U32 rNext = 0;
|
|
U32 dNext = 0;
|
|
const U32 dBufferSize = ringBufferSize + maxMessageSizeMask;
|
|
|
|
XXH64_reset(&xxhOrig, 0);
|
|
XXH64_reset(&xxhNewSafe, 0);
|
|
XXH64_reset(&xxhNewFast, 0);
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_setStreamDecode(&decodeStateSafe, NULL, 0);
|
|
LZ4_setStreamDecode(&decodeStateFast, NULL, 0);
|
|
|
|
while (iNext + messageSize < testCompressedSize) {
|
|
int compressedSize;
|
|
XXH64_update(&xxhOrig, testInput + iNext, messageSize);
|
|
crcOrig = XXH64_digest(&xxhOrig);
|
|
|
|
memcpy (ringBuffer + rNext, testInput + iNext, messageSize);
|
|
compressedSize = LZ4_compress_HC_continue(&sHC, ringBuffer + rNext, testCompressed, messageSize, testCompressedSize-ringBufferSize);
|
|
FUZ_CHECKTEST(compressedSize==0, "LZ4_compress_HC_continue() compression failed");
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe_continue(&decodeStateSafe, testCompressed, testVerify + dNext, compressedSize, messageSize);
|
|
FUZ_CHECKTEST(result!=(int)messageSize, "ringBuffer : LZ4_decompress_safe_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewSafe, testVerify + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewSafe);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe_continue() decompression corruption"); }
|
|
|
|
result = LZ4_decompress_fast_continue(&decodeStateFast, testCompressed, testVerify + dNext, messageSize);
|
|
FUZ_CHECKTEST(result!=compressedSize, "ringBuffer : LZ4_decompress_fast_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewFast, testVerify + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewFast);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_fast_continue() decompression corruption"); }
|
|
|
|
/* prepare next message */
|
|
iNext += messageSize;
|
|
rNext += messageSize;
|
|
dNext += messageSize;
|
|
messageSize = (FUZ_rand(&randState) & maxMessageSizeMask) + 1;
|
|
if (rNext + messageSize > ringBufferSize) rNext = 0;
|
|
if (dNext + messageSize > dBufferSize) dNext = 0;
|
|
}
|
|
}
|
|
|
|
/* Ring buffer test : Non synchronized decoder */
|
|
/* This test uses minimum amount of memory required to setup a decoding ring buffer
|
|
* while being unsynchronized with encoder
|
|
* (no assumption done on how the data is encoded, it just follows LZ4 format specification).
|
|
* This size is documented in lz4.h, and is LZ4_decoderRingBufferSize(maxBlockSize).
|
|
*/
|
|
{ XXH64_state_t xxhOrig;
|
|
XXH64_state_t xxhNewSafe, xxhNewFast;
|
|
LZ4_streamDecode_t decodeStateSafe, decodeStateFast;
|
|
const int maxMessageSizeLog = 12;
|
|
const int maxMessageSize = 1 << maxMessageSizeLog;
|
|
const int maxMessageSizeMask = maxMessageSize - 1;
|
|
int messageSize;
|
|
U32 totalMessageSize = 0;
|
|
const int dBufferSize = LZ4_decoderRingBufferSize(maxMessageSize);
|
|
char* const ringBufferSafe = testVerify;
|
|
char* const ringBufferFast = testVerify + dBufferSize + 1; /* used by LZ4_decompress_fast_continue */
|
|
int iNext = 0;
|
|
int dNext = 0;
|
|
int compressedSize;
|
|
|
|
assert((size_t)dBufferSize * 2 + 1 < testInputSize); /* space used by ringBufferSafe and ringBufferFast */
|
|
XXH64_reset(&xxhOrig, 0);
|
|
XXH64_reset(&xxhNewSafe, 0);
|
|
XXH64_reset(&xxhNewFast, 0);
|
|
LZ4_resetStreamHC_fast(&sHC, compressionLevel);
|
|
LZ4_setStreamDecode(&decodeStateSafe, NULL, 0);
|
|
LZ4_setStreamDecode(&decodeStateFast, NULL, 0);
|
|
|
|
#define BSIZE1 (dBufferSize - (maxMessageSize-1))
|
|
|
|
/* first block */
|
|
messageSize = BSIZE1; /* note : we cheat a bit here, in theory no message should be > maxMessageSize. We just want to fill the decoding ring buffer once. */
|
|
XXH64_update(&xxhOrig, testInput + iNext, (size_t)messageSize);
|
|
crcOrig = XXH64_digest(&xxhOrig);
|
|
|
|
compressedSize = LZ4_compress_HC_continue(&sHC, testInput + iNext, testCompressed, messageSize, testCompressedSize-ringBufferSize);
|
|
FUZ_CHECKTEST(compressedSize==0, "LZ4_compress_HC_continue() compression failed");
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
|
|
result = LZ4_decompress_safe_continue(&decodeStateSafe, testCompressed, ringBufferSafe + dNext, compressedSize, messageSize);
|
|
FUZ_CHECKTEST(result!=messageSize, "64K D.ringBuffer : LZ4_decompress_safe_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewSafe, ringBufferSafe + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewSafe);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe_continue() decompression corruption"); }
|
|
|
|
result = LZ4_decompress_fast_continue(&decodeStateFast, testCompressed, ringBufferFast + dNext, messageSize);
|
|
FUZ_CHECKTEST(result!=compressedSize, "64K D.ringBuffer : LZ4_decompress_fast_continue() test failed");
|
|
|
|
XXH64_update(&xxhNewFast, ringBufferFast + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewFast);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_fast_continue() decompression corruption"); }
|
|
|
|
/* prepare second message */
|
|
dNext += messageSize;
|
|
assert(messageSize >= 0);
|
|
totalMessageSize += (unsigned)messageSize;
|
|
messageSize = maxMessageSize;
|
|
iNext = BSIZE1+1;
|
|
assert(BSIZE1 >= 65535);
|
|
memcpy(testInput + iNext, testInput + (BSIZE1-65535), messageSize); /* will generate a match at max distance == 65535 */
|
|
FUZ_CHECKTEST(dNext+messageSize <= dBufferSize, "Ring buffer test : second message should require restarting from beginning");
|
|
dNext = 0;
|
|
|
|
while (totalMessageSize < 9 MB) {
|
|
XXH64_update(&xxhOrig, testInput + iNext, messageSize);
|
|
crcOrig = XXH64_digest(&xxhOrig);
|
|
|
|
compressedSize = LZ4_compress_HC_continue(&sHC, testInput + iNext, testCompressed, messageSize, testCompressedSize-ringBufferSize);
|
|
FUZ_CHECKTEST(compressedSize==0, "LZ4_compress_HC_continue() compression failed");
|
|
FUZ_CHECKTEST(sHC.internal_donotuse.dirty, "Context should be clean");
|
|
DISPLAYLEVEL(5, "compressed %i bytes to %i bytes \n", messageSize, compressedSize);
|
|
|
|
/* test LZ4_decompress_safe_continue */
|
|
assert(dNext < dBufferSize);
|
|
assert(dBufferSize - dNext >= maxMessageSize);
|
|
result = LZ4_decompress_safe_continue(&decodeStateSafe,
|
|
testCompressed, ringBufferSafe + dNext,
|
|
compressedSize, dBufferSize - dNext); /* works without knowing messageSize, under assumption that messageSize <= maxMessageSize */
|
|
FUZ_CHECKTEST(result!=messageSize, "D.ringBuffer : LZ4_decompress_safe_continue() test failed");
|
|
XXH64_update(&xxhNewSafe, ringBufferSafe + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewSafe);
|
|
if (crcOrig != crcNew) FUZ_findDiff(testInput + iNext, ringBufferSafe + dNext);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_safe_continue() decompression corruption during D.ringBuffer test");
|
|
}
|
|
|
|
/* test LZ4_decompress_fast_continue in its own buffer ringBufferFast */
|
|
result = LZ4_decompress_fast_continue(&decodeStateFast, testCompressed, ringBufferFast + dNext, messageSize);
|
|
FUZ_CHECKTEST(result!=compressedSize, "D.ringBuffer : LZ4_decompress_fast_continue() test failed");
|
|
XXH64_update(&xxhNewFast, ringBufferFast + dNext, messageSize);
|
|
{ U64 const crcNew = XXH64_digest(&xxhNewFast);
|
|
if (crcOrig != crcNew) FUZ_findDiff(testInput + iNext, ringBufferFast + dNext);
|
|
FUZ_CHECKTEST(crcOrig!=crcNew, "LZ4_decompress_fast_continue() decompression corruption during D.ringBuffer test");
|
|
}
|
|
|
|
/* prepare next message */
|
|
dNext += messageSize;
|
|
totalMessageSize += messageSize;
|
|
messageSize = (FUZ_rand(&randState) & maxMessageSizeMask) + 1;
|
|
iNext = (FUZ_rand(&randState) & 65535);
|
|
if (dNext + maxMessageSize > dBufferSize) dNext = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* clean up */
|
|
free(testInput);
|
|
free(testCompressed);
|
|
free(testVerify);
|
|
|
|
printf("All unit tests completed successfully compressionLevel=%d \n", compressionLevel);
|
|
return;
|
|
}
|
|
|
|
|
|
static 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:%i) \n", NB_ATTEMPTS);
|
|
DISPLAY( " -T# : Duration of tests, in seconds (default: use Nb of tests) \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;
|
|
}
|
|
|
|
|
|
int main(int argc, const char** argv)
|
|
{
|
|
U32 seed = 0;
|
|
int seedset = 0;
|
|
int argNb;
|
|
int nbTests = NB_ATTEMPTS;
|
|
int testNb = 0;
|
|
int proba = FUZ_COMPRESSIBILITY_DEFAULT;
|
|
int use_pause = 0;
|
|
const char* programName = argv[0];
|
|
U32 duration = 0;
|
|
|
|
/* Check command line */
|
|
for(argNb=1; argNb<argc; argNb++) {
|
|
const char* argument = argv[argNb];
|
|
|
|
if(!argument) continue; // Protection if argument empty
|
|
|
|
// Decode command (note : aggregated commands are allowed)
|
|
if (argument[0]=='-') {
|
|
if (!strcmp(argument, "--no-prompt")) { use_pause=0; seedset=1; g_displayLevel=1; continue; }
|
|
argument++;
|
|
|
|
while (*argument!=0) {
|
|
switch(*argument)
|
|
{
|
|
case 'h': /* display help */
|
|
return FUZ_usage(programName);
|
|
|
|
case 'v': /* verbose mode */
|
|
g_displayLevel++;
|
|
argument++;
|
|
break;
|
|
|
|
case 'p': /* pause at the end */
|
|
use_pause=1;
|
|
argument++;
|
|
break;
|
|
|
|
case 'i':
|
|
argument++;
|
|
nbTests = 0; duration = 0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
nbTests *= 10;
|
|
nbTests += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'T':
|
|
argument++;
|
|
nbTests = 0; duration = 0;
|
|
for (;;) {
|
|
switch(*argument)
|
|
{
|
|
case 'm': duration *= 60; argument++; continue;
|
|
case 's':
|
|
case 'n': argument++; continue;
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9': duration *= 10; duration += *argument++ - '0'; continue;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 's':
|
|
argument++;
|
|
seed=0; seedset=1;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
seed *= 10;
|
|
seed += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 't': /* select starting test nb */
|
|
argument++;
|
|
testNb=0;
|
|
while ((*argument>='0') && (*argument<='9')) {
|
|
testNb *= 10;
|
|
testNb += *argument - '0';
|
|
argument++;
|
|
}
|
|
break;
|
|
|
|
case 'P': /* change probability */
|
|
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: ;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
printf("Starting LZ4 fuzzer (%i-bits, v%s)\n", (int)(sizeof(size_t)*8), LZ4_versionString());
|
|
|
|
if (!seedset) {
|
|
time_t const t = time(NULL);
|
|
U32 const h = XXH32(&t, sizeof(t), 1);
|
|
seed = h % 10000;
|
|
}
|
|
printf("Seed = %u\n", seed);
|
|
|
|
if (proba!=FUZ_COMPRESSIBILITY_DEFAULT) printf("Compressibility : %i%%\n", proba);
|
|
|
|
if ((seedset==0) && (testNb==0)) { FUZ_unitTests(LZ4HC_CLEVEL_DEFAULT); FUZ_unitTests(LZ4HC_CLEVEL_OPT_MIN); }
|
|
|
|
if (nbTests<=0) nbTests=1;
|
|
|
|
{ int const result = FUZ_test(seed, nbTests, testNb, ((double)proba) / 100, duration);
|
|
if (use_pause) {
|
|
DISPLAY("press enter ... \n");
|
|
(void)getchar();
|
|
}
|
|
return result;
|
|
}
|
|
}
|