hxmangle.cpp
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上传日期:2007-06-06
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文件大小:3k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- //#include "hlxclib/stdio.h"
- #include "hlxclib/string.h"
- #include "hxmangle.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- // Given an input buffer, mangle it and return it back
- // The caller has to call delete[] on the returned pointer
- char*
- Cipher(const char* pszBuffer)
- {
- char* pszResult = NULL;
- int i = 0;
- int nSize = 0;
-
- if (!pszBuffer)
- {
- goto cleanup;
- }
- nSize = strlen(pszBuffer);
- pszResult = new char[nSize * 2 + 1];
- memset(pszResult, 0, nSize * 2 + 1);
- for (i = 0; i < nSize; i++)
- {
- pszResult[i * 2] = 'c' + ((pszBuffer[i] & 0x0f) ^ (i & 0x0f) ^ 0x07);
- pszResult[i * 2 + 1] = 'f' + (((pszBuffer[i] & 0xf0) >> 4) ^ (i & 0x0f) ^ 0x03);
- }
- cleanup:
- return pszResult;
- }
- // Given an input buffer, de-mangle it and return it back
- // The caller has to call delete[] on the returned pointer
- char*
- DeCipher(const char* pszBuffer)
- {
- char* pszResult = NULL;
- int i = 0;
- int nSize = 0;
- if (!pszBuffer)
- {
- goto cleanup;
- }
- nSize = strlen(pszBuffer);
- pszResult = new char[nSize / 2 + 1];
- memset(pszResult, 0, nSize / 2 + 1);
- for (i = 0; i < nSize / 2; i++)
- {
- pszResult[i] = ((pszBuffer[i * 2] - 'c') ^ (i & 0x0f) ^ 0x07) |
- (((pszBuffer[i * 2 + 1] - 'f') ^ (i & 0x0f) ^ 0x03) << 4);
- }
- cleanup:
- return pszResult;
- }