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118 lines
3.5 KiB
118 lines
3.5 KiB
/***************************************************************************
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* Copyright (C) 2005 by Joris Guisson *
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* joris.guisson@gmail.com *
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* ivasic@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef ANTIP2P_H
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#define ANTIP2P_H
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#include <util/mmapfile.h>
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#include <util/constants.h>
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#include <tqvaluelist.h>
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#include <tqstring.h>
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namespace kt
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{
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typedef struct
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{
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bt::Uint32 ip1;
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bt::Uint32 ip2;
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bt::Uint64 offset;
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bt::Uint32 nrEntries;
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} HeaderBlock;
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struct IPBlock
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{
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bt::Uint32 ip1;
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bt::Uint32 ip2;
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bool operator < (const IPBlock & b) const;
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};
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/**
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* @author Ivan Vasic <ivasic@gmail.com>
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* @brief This class is used to manage anti-p2p filter list, so called level1.
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*/
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class AntiP2P
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{
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public:
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AntiP2P();
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~AntiP2P();
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/**
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* Checks if anti-p2p file is present. Used to check if we should use level1 list
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**/
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bool exists();
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/**
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* Creates and loads the header from antip2p filter file.
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**/
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void loadHeader();
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/**
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* Checks if specified IP is listed in filter file.
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* @return TRUE if IP should be blocked, FALSE otherwise
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* @param ip TQString representation of IP to be checked
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**/
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bool isBlockedIP(const TQString& ip);
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/**
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* Overloaded function. Uses Uint32 IP to be checked
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**/
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bool isBlockedIP(bt::Uint32& ip);
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/**
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* This function converts TQString IP to Uint32 format.
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**/
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static bt::Uint32 toUint32(const TQString& ip);
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private:
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bt::MMapFile* file;
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TQValueList<HeaderBlock> blocks;
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///Is AntiP2P header loaded
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bool header_loaded;
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/**
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* Loads filter file
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*/
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void load();
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/**
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* Binary searches AntiP2P::blocks to find range where IP could be.
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* @returns
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* -1 if IP cannot be in the list
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* -2 if IP is already found in blocks
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* or index of HeaderBlock in AntiP2P::blocks which will be used for direct file search.
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**/
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int searchHeader(bt::Uint32& ip, int start, int end);
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/**
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* Binary searches AntiP2P::file to find IP.
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* @returns TRUE if IP should be blocked FALSE otherwise
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**/
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bool searchFile(IPBlock* file_blocks, bt::Uint32& ip, int start, int end);
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};
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}
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#endif
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