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401 lines
8.5 KiB
401 lines
8.5 KiB
15 years ago
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/***************************************************************************
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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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#include "ipblocklist.h"
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#include <qmap.h>
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#include <qstring.h>
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#include <qstringlist.h>
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#include <util/constants.h>
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#include <util/log.h>
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#include "globals.h"
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#include <interfaces/ipblockinginterface.h>
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namespace bt
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{
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Uint32 toUint32(const QString& ip, bool* ok)
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{
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bool test;
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*ok = true;
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Uint32 ret = ip.section('.',0,0).toULongLong(&test);
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if(!test) *ok=false;
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ret <<= 8;
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ret |= ip.section('.',1,1).toULong(&test);
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if(!test) *ok=false;
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ret <<= 8;
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ret |= ip.section('.',2,2).toULong(&test);
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if(!test) *ok=false;
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ret <<= 8;
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ret |= ip.section('.',3,3).toULong(&test);
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if(!test) *ok=false;
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if(*ok)
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{
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// Out() << "IP: " << ip << " parsed: " << ret << endl;
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return ret;
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}
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else
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{
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// Out() << "Could not parse IP " << ip << ". IP blocklist might not be working." << endl;
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return 0;
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}
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}
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IPBlocklist::IPBlocklist()
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{
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this->pluginInterface = 0;
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insert("0.0.0.0",3);
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addRange("3.*.*.*");
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}
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IPBlocklist::IPBlocklist(const IPBlocklist & ) {}
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void IPBlocklist::insert( QString ip, int state )
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{
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bool ok;
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Uint32 ipi = toUint32(ip, &ok);
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if(!ok)
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return;
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IPKey key(ipi,0xFFFFFFFF); //-- you can test ranges here. Just specify your mask.
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insertRangeIP(key, state);
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Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " banned." << endl;
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}
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void IPBlocklist::addRange(QString ip)
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{
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bool ok;
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int tmp = 0;
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Uint32 addr = 0;
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Uint32 mask = 0xFFFFFFFF;
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tmp = ip.section('.',0,0).toInt(&ok);
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if(!ok)
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{
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if(ip.section('.',0,0) == "*")
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mask &= 0x00FFFFFF;
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else return; //illegal character
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}
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else
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addr = tmp;
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tmp = ip.section('.',1,1).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',1,1) == "*")
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mask &= 0xFF00FFFF;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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tmp = ip.section('.',2,2).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',2,2) == "*")
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mask &= 0xFFFF00FF;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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tmp = ip.section('.',3,3).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',3,3) == "*")
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mask &=0xFFFFFF00;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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IPKey key(addr, mask);
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this->insertRangeIP(key);
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}
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void IPBlocklist::insertRangeIP(IPKey& key, int state)
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{
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// Out() << "Blocked range: " << key.m_ip << " - " << key.m_mask << endl;
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QMap<IPKey, int>::iterator it;
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if ((it = m_peers.find(key)) != m_peers.end())
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{
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if(it.key().m_mask != key.m_mask)
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{
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int st = it.data();
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IPKey key1(key.m_ip, it.key().m_mask | key.m_mask);
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m_peers.insert(key1, state+st);
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return;
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}
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m_peers[key]+= state;
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}
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else
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m_peers.insert(key,state);
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}
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void IPBlocklist::removeRange(QString ip)
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{
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bool ok;
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int tmp = 0;
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Uint32 addr = 0;
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Uint32 mask = 0xFFFFFFFF;
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tmp = ip.section('.',0,0).toInt(&ok);
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if(!ok)
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{
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if(ip.section('.',0,0) == "*")
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mask &= 0x00FFFFFF;
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else return; //illegal character
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}
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else
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addr = tmp;
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tmp = ip.section('.',1,1).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',1,1) == "*")
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mask &= 0xFF00FFFF;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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tmp = ip.section('.',2,2).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',2,2) == "*")
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mask &= 0xFFFF00FF;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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tmp = ip.section('.',3,3).toInt(&ok);
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if(!ok)
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{
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addr <<= 8;
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if(ip.section('.',3,3) == "*")
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mask &=0xFFFFFF00;
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else return; //illegal character
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}
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else
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{
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addr <<= 8;
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addr |= tmp;
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}
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IPKey key(addr, mask);
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QMap<IPKey, int>::iterator it = m_peers.find(key);
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if (it == m_peers.end())
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return;
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m_peers.remove(key);
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}
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void IPBlocklist::setPluginInterfacePtr( kt::IPBlockingInterface* ptr )
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{
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this->pluginInterface = ptr;
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}
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bool IPBlocklist::isBlocked(const QString& ip )
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{
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//First check local filter list
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if(isBlockedLocal(ip))
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{
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Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " is blacklisted. Connection denied." << endl;
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return true;
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}
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//Then we ask plugin
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if(isBlockedPlugin(ip))
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{
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Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " is blacklisted. Connection denied." << endl;
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return true;
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}
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return false;
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}
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bool IPBlocklist::isBlockedLocal(const QString& ip )
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{
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bool ok;
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Uint32 ipi = toUint32(ip,&ok);
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if (!ok)
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return false;
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IPKey key(ipi);
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QMap<IPKey, int>::iterator it;
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it = m_peers.find(key);
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if (it==m_peers.end())
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return false;
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return m_peers[key] >= 3;
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}
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bool IPBlocklist::isBlockedPlugin(const QString& ip )
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{
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if (pluginInterface == 0) //the plugin is not loaded
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return false;
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else
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return pluginInterface->isBlockedIP(ip);
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}
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QStringList* IPBlocklist::getBlocklist()
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{
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QStringList* ret = new QStringList();
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QMap<IPKey,int>::iterator it = m_peers.begin();
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for( ;it!=m_peers.end();++it)
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{
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IPKey key = it.key();
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*ret << key.toString();
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}
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return ret;
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}
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void IPBlocklist::setBlocklist(QStringList* list)
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{
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m_peers.clear();
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for (QStringList::Iterator it = list->begin(); it != list->end(); ++it )
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addRange(*it);
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}
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/*** IPKey *****************************************************************************************************************/
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IPKey::IPKey()
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{
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m_ip = 0;
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m_mask = 0xFFFFFFFF;
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}
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IPKey::IPKey(QString& ip, Uint32 mask)
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: m_mask(mask)
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{
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bool ok;
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this->m_ip = toUint32(ip, &ok);
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}
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IPKey::IPKey(const IPKey& ip)
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{
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m_ip = ip.m_ip;
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m_mask = ip.m_mask;
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}
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IPKey::IPKey(Uint32 ip, Uint32 mask)
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: m_ip(ip), m_mask(mask)
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{}
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QString IPKey::toString()
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{
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Uint32 tmp, tmpmask;
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Uint32 ip = m_ip;
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Uint32 mask = m_mask;
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QString out;
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tmp = ip;
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tmpmask = mask;
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tmp &= 0x000000FF;
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tmpmask &= 0x000000FF;
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if(tmpmask == 0)
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out.prepend("*");
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else
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out.prepend(QString("%1").arg(tmp));
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ip >>= 8;
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mask >>= 8;
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tmp = ip;
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tmpmask = mask;
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tmp &= 0x000000FF;
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tmpmask &= 0x000000FF;
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if(tmpmask == 0)
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out.prepend("*.");
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else
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out.prepend(QString("%1.").arg(tmp));
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ip >>= 8;
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mask >>= 8;
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tmp = ip;
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tmpmask = mask;
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tmp &= 0x000000FF;
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tmpmask &= 0x000000FF;
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if(tmpmask == 0)
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out.prepend("*.");
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else
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out.prepend(QString("%1.").arg(tmp));
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ip >>= 8;
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mask >>= 8;
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tmp = ip;
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tmpmask = mask;
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tmp &= 0x000000FF;
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tmpmask &= 0x000000FF;
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if(tmpmask == 0)
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out.prepend("*.");
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else
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out.prepend(QString("%1.").arg(tmp));
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return out;
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}
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bool IPKey::operator ==(const IPKey& ip) const
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{
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return (m_ip & m_mask) == m_mask & ip.m_ip;
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}
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bool IPKey::operator !=(const IPKey& ip) const
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{
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return (m_ip & m_mask) != m_mask & ip.m_ip;
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}
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bool IPKey::operator < (const IPKey& ip) const
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{
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return (m_ip & m_mask) < (m_mask & ip.m_ip);
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}
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IPKey& IPKey::operator =(const IPKey& ip)
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{
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m_ip = ip.m_ip;
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m_mask = ip.m_mask;
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return *this;
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}
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IPKey::~ IPKey()
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{}
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}
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