Function WriteMemDataMD5

3rdParty/StormLib/src/SBaseCommon.cpp:1442–1489

}

int WriteMemDataMD5(
    TFileStream * pStream,
    ULONGLONG RawDataOffs,
    void * pvRawData,
    DWORD dwRawDataSize,
    DWORD dwChunkSize,
    LPDWORD pcbTotalSize)
{
    unsigned char * md5_array;
    unsigned char * md5;
    LPBYTE pbRawData = (LPBYTE)pvRawData;
    DWORD dwBytesRemaining = dwRawDataSize;
    DWORD dwMd5ArraySize = 0;
    int nError = ERROR_SUCCESS;

    // Allocate buffer for array of MD5
    md5_array = md5 = AllocateMd5Buffer(dwRawDataSize, dwChunkSize, &dwMd5ArraySize);
    if(md5_array == NULL)
        return ERROR_NOT_ENOUGH_MEMORY;

    // For every file chunk, calculate MD5
    while(dwBytesRemaining != 0)
    {
        // Get the remaining number of bytes to read
        dwChunkSize = STORMLIB_MIN(dwBytesRemaining, dwChunkSize);

        // Calculate MD5
        CalculateDataBlockHash(pbRawData, dwChunkSize, md5);
        md5 += MD5_DIGEST_SIZE;

        // Move offset and size
        dwBytesRemaining -= dwChunkSize;
        pbRawData += dwChunkSize;
    }

    // Write the array od MD5's to the file
    RawDataOffs += dwRawDataSize;
    if(!FileStream_Write(pStream, &RawDataOffs, md5_array, dwMd5ArraySize))
        nError = GetLastError();

    // Give the caller the size of the MD5 array
    if(pcbTotalSize != NULL)
        *pcbTotalSize = dwRawDataSize + dwMd5ArraySize;

    // Free buffers and exit
    STORM_FREE(md5_array);
    return nError;
}


// Writes the MD5 for each chunk of the raw file data