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ext/zstd/tests/roundTripCrash.c  view on Meta::CPAN

    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, int testCCtxParams)
{
    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 = 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);
        }
        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, int testCCtxParams)
{
    size_t const fileSize = getFileSize(fileName);
    void* const buffer = malloc(fileSize + !fileSize /* avoid 0 */);
    if (!buffer) {
        fprintf(stderr, "not enough memory \n");
        exit(4);
    }
    loadFile(buffer, fileName, 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);
    }

    if (!strcmp(argv[argNb], "--cctxParams")) {
      testCCtxParams = 1;
      argNb++;
    }

    fileCheck(argv[argNb], testCCtxParams);
    fprintf(stderr, "no pb detected\n");
    return 0;
}