00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ 00002 /* libwpd 00003 * Version: MPL 2.0 / LGPLv2.1+ 00004 * 00005 * This Source Code Form is subject to the terms of the Mozilla Public 00006 * License, v. 2.0. If a copy of the MPL was not distributed with this 00007 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 00008 * 00009 * Major Contributor(s): 00010 * Copyright (C) 2007 Jaroslav Fojtik (JaFojtik@seznam.cz) 00011 * Copyright (C) 2007 Fridrich Strba (fridrich.strba@bluewin.ch) 00012 * 00013 * For minor contributions see the git repository. 00014 * 00015 * Alternatively, the contents of this file may be used under the terms 00016 * of the GNU Lesser General Public License Version 2.1 or later 00017 * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are 00018 * applicable instead of those above. 00019 * 00020 * For further information visit http://libwpd.sourceforge.net 00021 */ 00022 00023 /* "This product is not manufactured, approved, or supported by 00024 * Corel Corporation or Corel Corporation Limited." 00025 */ 00026 00027 #ifndef WPXENCRYPTION_H 00028 #define WPXENCRYPTION_H 00029 00030 #include <librevenge/librevenge.h> 00031 #include <libwpd/libwpd.h> 00032 00033 class WPXEncryption 00034 { 00035 public: 00036 WPXEncryption(const char *password, const unsigned long encryptionStartOffset = 0); 00037 ~WPXEncryption(); 00038 00039 const unsigned char *readAndDecrypt(librevenge::RVNGInputStream *input, unsigned long numBytes, unsigned long &numBytesRead); 00040 unsigned short getCheckSum() const; 00041 00042 void setEncryptionStartOffset(unsigned long encryptionStartOffset) 00043 { 00044 m_encryptionStartOffset = encryptionStartOffset; 00045 } 00046 unsigned long getEncryptionStartOffset() const 00047 { 00048 return m_encryptionStartOffset; 00049 } 00050 00051 void setEncryptionMaskBase(unsigned char encryptionMaskBase) 00052 { 00053 m_encryptionMaskBase = encryptionMaskBase; 00054 } 00055 unsigned char getEncryptionMaskBase() const 00056 { 00057 return m_encryptionMaskBase; 00058 } 00059 00060 const librevenge::RVNGString &getEncryptionPassword() const 00061 { 00062 return m_password; 00063 } 00064 00065 private: 00066 unsigned char *m_buffer; 00067 librevenge::RVNGString m_password; 00068 unsigned long m_encryptionStartOffset; 00069 unsigned char m_encryptionMaskBase; 00070 // Unimplemented to prevent compiler from creating crasher ones 00071 WPXEncryption(const WPXEncryption &); 00072 WPXEncryption &operator=(const WPXEncryption &); 00073 }; 00074 00075 #endif /* WPXENCRYPTION_H */ 00076 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */