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       1                 :            : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 :            : /*
       3                 :            :  * This file is part of the LibreOffice project.
       4                 :            :  *
       5                 :            :  * This Source Code Form is subject to the terms of the Mozilla Public
       6                 :            :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7                 :            :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8                 :            :  *
       9                 :            :  * This file incorporates work covered by the following license notice:
      10                 :            :  *
      11                 :            :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12                 :            :  *   contributor license agreements. See the NOTICE file distributed
      13                 :            :  *   with this work for additional information regarding copyright
      14                 :            :  *   ownership. The ASF licenses this file to you under the Apache
      15                 :            :  *   License, Version 2.0 (the "License"); you may not use this file
      16                 :            :  *   except in compliance with the License. You may obtain a copy of
      17                 :            :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18                 :            :  */
      19                 :            : 
      20                 :            : 
      21                 :            : #include <svl/PasswordHelper.hxx>
      22                 :            : #include <rtl/digest.h>
      23                 :            : #include <tools/string.hxx>
      24                 :            : 
      25                 :            : using namespace com::sun::star;
      26                 :            : 
      27                 :          0 : void SvPasswordHelper::GetHashPassword(uno::Sequence<sal_Int8>& rPassHash, const sal_Char* pPass, sal_uInt32 nLen)
      28                 :            : {
      29                 :          0 :     rPassHash.realloc(RTL_DIGEST_LENGTH_SHA1);
      30                 :            : 
      31                 :          0 :     rtlDigestError aError = rtl_digest_SHA1 (pPass, nLen, reinterpret_cast<sal_uInt8*>(rPassHash.getArray()), rPassHash.getLength());
      32         [ #  # ]:          0 :     if (aError != rtl_Digest_E_None)
      33                 :            :     {
      34                 :          0 :         rPassHash.realloc(0);
      35                 :            :     }
      36                 :          0 : }
      37                 :            : 
      38                 :          0 : void SvPasswordHelper::GetHashPasswordLittleEndian(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
      39                 :            : {
      40                 :          0 :     xub_StrLen nSize(sPass.Len());
      41                 :          0 :     sal_Char* pCharBuffer = new sal_Char[nSize * sizeof(sal_Unicode)];
      42                 :            : 
      43         [ #  # ]:          0 :     for (xub_StrLen i = 0; i < nSize; ++i)
      44                 :            :     {
      45                 :          0 :         sal_Unicode ch(sPass.GetChar(i));
      46                 :          0 :         pCharBuffer[2 * i] = static_cast< sal_Char >(ch & 0xFF);
      47                 :          0 :         pCharBuffer[2 * i + 1] = static_cast< sal_Char >(ch >> 8);
      48                 :            :     }
      49                 :            : 
      50                 :          0 :     GetHashPassword(rPassHash, pCharBuffer, nSize * sizeof(sal_Unicode));
      51                 :            : 
      52         [ #  # ]:          0 :     delete[] pCharBuffer;
      53                 :          0 : }
      54                 :            : 
      55                 :          0 : void SvPasswordHelper::GetHashPasswordBigEndian(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
      56                 :            : {
      57                 :          0 :     xub_StrLen nSize(sPass.Len());
      58                 :          0 :     sal_Char* pCharBuffer = new sal_Char[nSize * sizeof(sal_Unicode)];
      59                 :            : 
      60         [ #  # ]:          0 :     for (xub_StrLen i = 0; i < nSize; ++i)
      61                 :            :     {
      62                 :          0 :         sal_Unicode ch(sPass.GetChar(i));
      63                 :          0 :         pCharBuffer[2 * i] = static_cast< sal_Char >(ch >> 8);
      64                 :          0 :         pCharBuffer[2 * i + 1] = static_cast< sal_Char >(ch & 0xFF);
      65                 :            :     }
      66                 :            : 
      67                 :          0 :     GetHashPassword(rPassHash, pCharBuffer, nSize * sizeof(sal_Unicode));
      68                 :            : 
      69         [ #  # ]:          0 :     delete[] pCharBuffer;
      70                 :          0 : }
      71                 :            : 
      72                 :          0 : void SvPasswordHelper::GetHashPassword(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
      73                 :            : {
      74                 :          0 :     GetHashPasswordLittleEndian(rPassHash, sPass);
      75                 :          0 : }
      76                 :            : 
      77                 :          0 : bool SvPasswordHelper::CompareHashPassword(const uno::Sequence<sal_Int8>& rOldPassHash, const String& sNewPass)
      78                 :            : {
      79                 :          0 :     bool bResult = false;
      80                 :            : 
      81         [ #  # ]:          0 :     uno::Sequence<sal_Int8> aNewPass(RTL_DIGEST_LENGTH_SHA1);
      82         [ #  # ]:          0 :     GetHashPasswordLittleEndian(aNewPass, sNewPass);
      83 [ #  # ][ #  # ]:          0 :     if (aNewPass == rOldPassHash)
      84                 :          0 :         bResult = true;
      85                 :            :     else
      86                 :            :     {
      87         [ #  # ]:          0 :         GetHashPasswordBigEndian(aNewPass, sNewPass);
      88         [ #  # ]:          0 :         bResult = (aNewPass == rOldPassHash);
      89                 :            :     }
      90                 :            : 
      91         [ #  # ]:          0 :     return bResult;
      92                 :            : }
      93                 :            : 
      94                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */