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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* [email protected] *
* [email protected] *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "ipblocklist.h"
#include <qmap.h>
#include <qstring.h>
#include <qstringlist.h>
#include <util/constants.h>
#include <util/log.h>
#include "globals.h"
#include <interfaces/ipblockinginterface.h>
namespace bt
{
Uint32 toUint32(const QString& ip, bool* ok)
{
bool test;
*ok = true;
Uint32 ret = ip.section('.',0,0).toULongLong(&test);
if(!test) *ok=false;
ret <<= 8;
ret |= ip.section('.',1,1).toULong(&test);
if(!test) *ok=false;
ret <<= 8;
ret |= ip.section('.',2,2).toULong(&test);
if(!test) *ok=false;
ret <<= 8;
ret |= ip.section('.',3,3).toULong(&test);
if(!test) *ok=false;
if(*ok)
{
// Out() << "IP: " << ip << " parsed: " << ret << endl;
return ret;
}
else
{
// Out() << "Could not parse IP " << ip << ". IP blocklist might not be working." << endl;
return 0;
}
}
IPBlocklist::IPBlocklist()
{
this->pluginInterface = 0;
insert("0.0.0.0",3);
addRange("3.*.*.*");
}
IPBlocklist::IPBlocklist(const IPBlocklist & ) {}
void IPBlocklist::insert( QString ip, int state )
{
bool ok;
Uint32 ipi = toUint32(ip, &ok);
if(!ok)
return;
IPKey key(ipi,0xFFFFFFFF); //-- you can test ranges here. Just specify your mask.
insertRangeIP(key, state);
Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " banned." << endl;
}
void IPBlocklist::addRange(QString ip)
{
bool ok;
int tmp = 0;
Uint32 addr = 0;
Uint32 mask = 0xFFFFFFFF;
tmp = ip.section('.',0,0).toInt(&ok);
if(!ok)
{
if(ip.section('.',0,0) == "*")
mask &= 0x00FFFFFF;
else return; //illegal character
}
else
addr = tmp;
tmp = ip.section('.',1,1).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',1,1) == "*")
mask &= 0xFF00FFFF;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
tmp = ip.section('.',2,2).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',2,2) == "*")
mask &= 0xFFFF00FF;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
tmp = ip.section('.',3,3).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',3,3) == "*")
mask &=0xFFFFFF00;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
IPKey key(addr, mask);
this->insertRangeIP(key);
}
void IPBlocklist::insertRangeIP(IPKey& key, int state)
{
// Out() << "Blocked range: " << key.m_ip << " - " << key.m_mask << endl;
QMap<IPKey, int>::iterator it;
if ((it = m_peers.find(key)) != m_peers.end())
{
if(it.key().m_mask != key.m_mask)
{
int st = it.data();
IPKey key1(key.m_ip, it.key().m_mask | key.m_mask);
m_peers.insert(key1, state+st);
return;
}
m_peers[key]+= state;
}
else
m_peers.insert(key,state);
}
void IPBlocklist::removeRange(QString ip)
{
bool ok;
int tmp = 0;
Uint32 addr = 0;
Uint32 mask = 0xFFFFFFFF;
tmp = ip.section('.',0,0).toInt(&ok);
if(!ok)
{
if(ip.section('.',0,0) == "*")
mask &= 0x00FFFFFF;
else return; //illegal character
}
else
addr = tmp;
tmp = ip.section('.',1,1).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',1,1) == "*")
mask &= 0xFF00FFFF;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
tmp = ip.section('.',2,2).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',2,2) == "*")
mask &= 0xFFFF00FF;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
tmp = ip.section('.',3,3).toInt(&ok);
if(!ok)
{
addr <<= 8;
if(ip.section('.',3,3) == "*")
mask &=0xFFFFFF00;
else return; //illegal character
}
else
{
addr <<= 8;
addr |= tmp;
}
IPKey key(addr, mask);
QMap<IPKey, int>::iterator it = m_peers.find(key);
if (it == m_peers.end())
return;
m_peers.remove(key);
}
void IPBlocklist::setPluginInterfacePtr( kt::IPBlockingInterface* ptr )
{
this->pluginInterface = ptr;
}
bool IPBlocklist::isBlocked(const QString& ip )
{
//First check local filter list
if(isBlockedLocal(ip))
{
Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " is blacklisted. Connection denied." << endl;
return true;
}
//Then we ask plugin
if(isBlockedPlugin(ip))
{
Out(SYS_IPF|LOG_NOTICE) << "IP " << ip << " is blacklisted. Connection denied." << endl;
return true;
}
return false;
}
bool IPBlocklist::isBlockedLocal(const QString& ip )
{
bool ok;
Uint32 ipi = toUint32(ip,&ok);
if (!ok)
return false;
IPKey key(ipi);
QMap<IPKey, int>::iterator it;
it = m_peers.find(key);
if (it==m_peers.end())
return false;
return m_peers[key] >= 3;
}
bool IPBlocklist::isBlockedPlugin(const QString& ip )
{
if (pluginInterface == 0) //the plugin is not loaded
return false;
else
return pluginInterface->isBlockedIP(ip);
}
QStringList* IPBlocklist::getBlocklist()
{
QStringList* ret = new QStringList();
QMap<IPKey,int>::iterator it = m_peers.begin();
for( ;it!=m_peers.end();++it)
{
IPKey key = it.key();
*ret << key.toString();
}
return ret;
}
void IPBlocklist::setBlocklist(QStringList* list)
{
m_peers.clear();
for (QStringList::Iterator it = list->begin(); it != list->end(); ++it )
addRange(*it);
}
/*** IPKey *****************************************************************************************************************/
IPKey::IPKey()
{
m_ip = 0;
m_mask = 0xFFFFFFFF;
}
IPKey::IPKey(QString& ip, Uint32 mask)
: m_mask(mask)
{
bool ok;
this->m_ip = toUint32(ip, &ok);
}
IPKey::IPKey(const IPKey& ip)
{
m_ip = ip.m_ip;
m_mask = ip.m_mask;
}
IPKey::IPKey(Uint32 ip, Uint32 mask)
: m_ip(ip), m_mask(mask)
{}
QString IPKey::toString()
{
Uint32 tmp, tmpmask;
Uint32 ip = m_ip;
Uint32 mask = m_mask;
QString out;
tmp = ip;
tmpmask = mask;
tmp &= 0x000000FF;
tmpmask &= 0x000000FF;
if(tmpmask == 0)
out.prepend("*");
else
out.prepend(QString("%1").arg(tmp));
ip >>= 8;
mask >>= 8;
tmp = ip;
tmpmask = mask;
tmp &= 0x000000FF;
tmpmask &= 0x000000FF;
if(tmpmask == 0)
out.prepend("*.");
else
out.prepend(QString("%1.").arg(tmp));
ip >>= 8;
mask >>= 8;
tmp = ip;
tmpmask = mask;
tmp &= 0x000000FF;
tmpmask &= 0x000000FF;
if(tmpmask == 0)
out.prepend("*.");
else
out.prepend(QString("%1.").arg(tmp));
ip >>= 8;
mask >>= 8;
tmp = ip;
tmpmask = mask;
tmp &= 0x000000FF;
tmpmask &= 0x000000FF;
if(tmpmask == 0)
out.prepend("*.");
else
out.prepend(QString("%1.").arg(tmp));
return out;
}
bool IPKey::operator ==(const IPKey& ip) const
{
return (m_ip & m_mask) == m_mask & ip.m_ip;
}
bool IPKey::operator !=(const IPKey& ip) const
{
return (m_ip & m_mask) != m_mask & ip.m_ip;
}
bool IPKey::operator < (const IPKey& ip) const
{
return (m_ip & m_mask) < (m_mask & ip.m_ip);
}
IPKey& IPKey::operator =(const IPKey& ip)
{
m_ip = ip.m_ip;
m_mask = ip.m_mask;
return *this;
}
IPKey::~ IPKey()
{}
}
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