+++ /dev/null
-/**
- * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-/*
- This program takes a file in input,
- performs a zstd round-trip test (compression - decompress)
- compares the result with original
- and generates a crash (double free) on corruption detection.
-*/
-
-/*===========================================
-* Dependencies
-*==========================================*/
-#include <stddef.h> /* size_t */
-#include <stdlib.h> /* malloc, free, exit */
-#include <stdio.h> /* fprintf */
-#include <sys/types.h> /* stat */
-#include <sys/stat.h> /* stat */
-#include "xxhash.h"
-
-#define ZSTD_STATIC_LINKING_ONLY
-#include "zstd.h"
-
-/*===========================================
-* Macros
-*==========================================*/
-#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
-
-static void crash(int errorCode){
- /* abort if AFL/libfuzzer, exit otherwise */
- #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION /* could also use __AFL_COMPILER */
- abort();
- #else
- exit(errorCode);
- #endif
-}
-
-#define CHECK_Z(f) { \
- size_t const err = f; \
- if (ZSTD_isError(err)) { \
- fprintf(stderr, \
- "Error=> %s: %s", \
- #f, ZSTD_getErrorName(err)); \
- crash(1); \
-} }
-
-/** roundTripTest() :
-* Compresses `srcBuff` into `compressedBuff`,
-* then decompresses `compressedBuff` into `resultBuff`.
-*
-* Parameters are currently set manually.
-*
-* @return : result of decompression, which should be == `srcSize`
-* or an error code if either compression or decompression fails.
-* Note : `compressedBuffCapacity` should be `>= ZSTD_compressBound(srcSize)`
-* for compression to be guaranteed to work */
-static size_t roundTripTest(void* resultBuff, size_t resultBuffCapacity,
- void* compressedBuff, size_t compressedBuffCapacity,
- const void* srcBuff, size_t srcBuffSize)
-{
- ZSTD_CCtx* const cctx = ZSTD_createCCtx();
- ZSTD_CCtx_params* const cctxParams = ZSTD_createCCtxParams();
- ZSTD_inBuffer inBuffer = { srcBuff, srcBuffSize, 0 };
- ZSTD_outBuffer outBuffer = {compressedBuff, compressedBuffCapacity, 0 };
-
- CHECK_Z( ZSTD_CCtxParam_setParameter(cctxParams, ZSTD_p_compressionLevel, 1) );
- CHECK_Z (ZSTD_CCtxParam_setParameter(cctxParams, ZSTD_p_nbThreads, 3) );
- CHECK_Z (ZSTD_CCtxParam_setParameter(cctxParams, ZSTD_p_compressionStrategy, ZSTD_lazy) );
- CHECK_Z( ZSTD_CCtx_applyCCtxParams(cctx, cctxParams) );
-
- CHECK_Z (ZSTD_compress_generic(cctx, &outBuffer, &inBuffer, ZSTD_e_end) );
-
- ZSTD_freeCCtxParams(cctxParams);
- ZSTD_freeCCtx(cctx);
-
- return ZSTD_decompress(resultBuff, resultBuffCapacity, compressedBuff, outBuffer.pos);
-}
-
-
-static size_t checkBuffers(const void* buff1, const void* buff2, size_t buffSize)
-{
- const char* ip1 = (const char*)buff1;
- const char* ip2 = (const char*)buff2;
- size_t pos;
-
- for (pos=0; pos<buffSize; pos++)
- if (ip1[pos]!=ip2[pos])
- break;
-
- return pos;
-}
-
-static void roundTripCheck(const void* srcBuff, size_t srcBuffSize)
-{
- size_t const cBuffSize = ZSTD_compressBound(srcBuffSize);
- void* cBuff = malloc(cBuffSize);
- void* rBuff = malloc(cBuffSize);
-
- if (!cBuff || !rBuff) {
- fprintf(stderr, "not enough memory ! \n");
- exit (1);
- }
-
- { size_t const result = roundTripTest(rBuff, cBuffSize, cBuff, cBuffSize, srcBuff, srcBuffSize);
- if (ZSTD_isError(result)) {
- fprintf(stderr, "roundTripTest error : %s \n", ZSTD_getErrorName(result));
- crash(1);
- }
- if (result != srcBuffSize) {
- fprintf(stderr, "Incorrect regenerated size : %u != %u\n", (unsigned)result, (unsigned)srcBuffSize);
- crash(1);
- }
- if (checkBuffers(srcBuff, rBuff, srcBuffSize) != srcBuffSize) {
- fprintf(stderr, "Silent decoding corruption !!!");
- crash(1);
- }
- }
-
- free(cBuff);
- free(rBuff);
-}
-
-
-static size_t getFileSize(const char* infilename)
-{
- int r;
-#if defined(_MSC_VER)
- struct _stat64 statbuf;
- r = _stat64(infilename, &statbuf);
- if (r || !(statbuf.st_mode & S_IFREG)) return 0; /* No good... */
-#else
- struct stat statbuf;
- r = stat(infilename, &statbuf);
- if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */
-#endif
- return (size_t)statbuf.st_size;
-}
-
-
-static int isDirectory(const char* infilename)
-{
- int r;
-#if defined(_MSC_VER)
- struct _stat64 statbuf;
- r = _stat64(infilename, &statbuf);
- if (!r && (statbuf.st_mode & _S_IFDIR)) return 1;
-#else
- struct stat statbuf;
- r = stat(infilename, &statbuf);
- if (!r && S_ISDIR(statbuf.st_mode)) return 1;
-#endif
- return 0;
-}
-
-
-/** loadFile() :
-* requirement : `buffer` size >= `fileSize` */
-static void loadFile(void* buffer, const char* fileName, size_t fileSize)
-{
- FILE* const f = fopen(fileName, "rb");
- if (isDirectory(fileName)) {
- fprintf(stderr, "Ignoring %s directory \n", fileName);
- exit(2);
- }
- if (f==NULL) {
- fprintf(stderr, "Impossible to open %s \n", fileName);
- exit(3);
- }
- { size_t const readSize = fread(buffer, 1, fileSize, f);
- if (readSize != fileSize) {
- fprintf(stderr, "Error reading %s \n", fileName);
- exit(5);
- } }
- fclose(f);
-}
-
-
-static void fileCheck(const char* fileName)
-{
- size_t const fileSize = getFileSize(fileName);
- void* buffer = malloc(fileSize);
- if (!buffer) {
- fprintf(stderr, "not enough memory \n");
- exit(4);
- }
- loadFile(buffer, fileName, fileSize);
- roundTripCheck(buffer, fileSize);
- free (buffer);
-}
-
-int main(int argCount, const char** argv) {
- if (argCount < 2) {
- fprintf(stderr, "Error : no argument : need input file \n");
- exit(9);
- }
- fileCheck(argv[1]);
- fprintf(stderr, "no pb detected\n");
- return 0;
-}
#include <stddef.h> /* size_t */
#include <stdlib.h> /* malloc, free, exit */
#include <stdio.h> /* fprintf */
+#include <string.h> /* strcmp */
#include <sys/types.h> /* stat */
#include <sys/stat.h> /* stat */
#include "xxhash.h"
+
+#define ZSTD_STATIC_LINKING_ONLY
#include "zstd.h"
/*===========================================
*==========================================*/
#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
+static void crash(int errorCode){
+ /* abort if AFL/libfuzzer, exit otherwise */
+ #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION /* could also use __AFL_COMPILER */
+ abort();
+ #else
+ exit(errorCode);
+ #endif
+}
+
+#define CHECK_Z(f) { \
+ size_t const err = f; \
+ if (ZSTD_isError(err)) { \
+ fprintf(stderr, \
+ "Error=> %s: %s", \
+ #f, ZSTD_getErrorName(err)); \
+ crash(1); \
+} }
+
/** roundTripTest() :
* Compresses `srcBuff` into `compressedBuff`,
* then decompresses `compressedBuff` into `resultBuff`.
return ZSTD_decompress(resultBuff, resultBuffCapacity, compressedBuff, cSize);
}
+/** cctxParamRoundTripTest() :
+ * Same as roundTripTest() except allows experimenting with ZSTD_CCtx_params. */
+static size_t cctxParamRoundTripTest(void* resultBuff, size_t resultBuffCapacity,
+ void* compressedBuff, size_t compressedBuffCapacity,
+ const void* srcBuff, size_t srcBuffSize)
+{
+ ZSTD_CCtx* const cctx = ZSTD_createCCtx();
+ ZSTD_CCtx_params* const cctxParams = ZSTD_createCCtxParams();
+ ZSTD_inBuffer inBuffer = { srcBuff, srcBuffSize, 0 };
+ ZSTD_outBuffer outBuffer = {compressedBuff, compressedBuffCapacity, 0 };
+
+ static const int maxClevel = 19;
+ size_t const hashLength = MIN(128, srcBuffSize);
+ unsigned const h32 = XXH32(srcBuff, hashLength, 0);
+ int const cLevel = h32 % maxClevel;
+
+ /* Set parameters */
+ CHECK_Z( ZSTD_CCtxParam_setParameter(cctxParams, ZSTD_p_compressionLevel, cLevel) );
+
+ /* Apply parameters */
+ CHECK_Z( ZSTD_CCtx_applyCCtxParams(cctx, cctxParams) );
+
+ CHECK_Z (ZSTD_compress_generic(cctx, &outBuffer, &inBuffer, ZSTD_e_end) );
+
+ ZSTD_freeCCtxParams(cctxParams);
+ ZSTD_freeCCtx(cctx);
+
+ return ZSTD_decompress(resultBuff, resultBuffCapacity, compressedBuff, outBuffer.pos);
+}
static size_t checkBuffers(const void* buff1, const void* buff2, size_t buffSize)
{
return pos;
}
-static void crash(int errorCode){
- /* abort if AFL/libfuzzer, exit otherwise */
- #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION /* could also use __AFL_COMPILER */
- abort();
- #else
- exit(errorCode);
- #endif
-}
-
-static void roundTripCheck(const void* srcBuff, size_t srcBuffSize)
+static void roundTripCheck(const void* srcBuff, size_t srcBuffSize, int testCCtxParams)
{
size_t const cBuffSize = ZSTD_compressBound(srcBuffSize);
void* cBuff = malloc(cBuffSize);
exit (1);
}
- { size_t const result = roundTripTest(rBuff, cBuffSize, cBuff, cBuffSize, srcBuff, srcBuffSize);
+ { size_t const result = testCCtxParams ?
+ cctxParamRoundTripTest(rBuff, cBuffSize, cBuff, cBuffSize, srcBuff, srcBuffSize)
+ : roundTripTest(rBuff, cBuffSize, cBuff, cBuffSize, srcBuff, srcBuffSize);
if (ZSTD_isError(result)) {
fprintf(stderr, "roundTripTest error : %s \n", ZSTD_getErrorName(result));
crash(1);
}
-static void fileCheck(const char* fileName)
+static void fileCheck(const char* fileName, int testCCtxParams)
{
size_t const fileSize = getFileSize(fileName);
void* buffer = malloc(fileSize);
exit(4);
}
loadFile(buffer, fileName, fileSize);
- roundTripCheck(buffer, fileSize);
+ roundTripCheck(buffer, fileSize, testCCtxParams);
free (buffer);
}
int main(int argCount, const char** argv) {
+ int argNb = 1;
+ int testCCtxParams = 0;
if (argCount < 2) {
fprintf(stderr, "Error : no argument : need input file \n");
exit(9);
}
- fileCheck(argv[1]);
+
+ if (!strcmp(argv[argNb], "--cctxParams")) {
+ testCCtxParams = 1;
+ argNb++;
+ }
+
+ fileCheck(argv[argNb], testCCtxParams);
fprintf(stderr, "no pb detected\n");
return 0;
}
projects / thirdparty / zstd.git / commitdiff
