Line data    Source code

       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 <boost/scoped_array.hpp>
      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 OUString& sPass)
      39             : {
      40           0 :     sal_Int32 nSize(sPass.getLength());
      41           0 :     boost::scoped_array<sal_Char> pCharBuffer(new sal_Char[nSize * sizeof(sal_Unicode)]);
      42             : 
      43           0 :     for (sal_Int32 i = 0; i < nSize; ++i)
      44             :     {
      45           0 :         sal_Unicode ch(sPass[ 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.get(), nSize * sizeof(sal_Unicode));
      51           0 : }
      52             : 
      53           0 : void SvPasswordHelper::GetHashPasswordBigEndian(uno::Sequence<sal_Int8>& rPassHash, const OUString& sPass)
      54             : {
      55           0 :     sal_Int32 nSize(sPass.getLength());
      56           0 :     boost::scoped_array<sal_Char> pCharBuffer(new sal_Char[nSize * sizeof(sal_Unicode)]);
      57             : 
      58           0 :     for (sal_Int32 i = 0; i < nSize; ++i)
      59             :     {
      60           0 :         sal_Unicode ch(sPass[ i ]);
      61           0 :         pCharBuffer[2 * i] = static_cast< sal_Char >(ch >> 8);
      62           0 :         pCharBuffer[2 * i + 1] = static_cast< sal_Char >(ch & 0xFF);
      63             :     }
      64             : 
      65           0 :     GetHashPassword(rPassHash, pCharBuffer.get(), nSize * sizeof(sal_Unicode));
      66           0 : }
      67             : 
      68           0 : void SvPasswordHelper::GetHashPassword(uno::Sequence<sal_Int8>& rPassHash, const OUString& sPass)
      69             : {
      70           0 :     GetHashPasswordLittleEndian(rPassHash, sPass);
      71           0 : }
      72             : 
      73           0 : bool SvPasswordHelper::CompareHashPassword(const uno::Sequence<sal_Int8>& rOldPassHash, const OUString& sNewPass)
      74             : {
      75           0 :     bool bResult = false;
      76             : 
      77           0 :     uno::Sequence<sal_Int8> aNewPass(RTL_DIGEST_LENGTH_SHA1);
      78           0 :     GetHashPasswordLittleEndian(aNewPass, sNewPass);
      79           0 :     if (aNewPass == rOldPassHash)
      80           0 :         bResult = true;
      81             :     else
      82             :     {
      83           0 :         GetHashPasswordBigEndian(aNewPass, sNewPass);
      84           0 :         bResult = (aNewPass == rOldPassHash);
      85             :     }
      86             : 
      87           0 :     return bResult;
      88             : }
      89             : 
      90             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */