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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* ivasic@gmail.com *
* *
* 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. *
***************************************************************************/
#ifndef IPBLOCKLIST_H
#define IPBLOCKLIST_H
#include <interfaces/ipblockinginterface.h>
#include <qmap.h>
#include <qstringlist.h>
#include <util/constants.h>
class QString;
namespace bt
{
class IPKey
{
public:
IPKey();
IPKey(QString& ip, Uint32 mask = 0xFFFFFFFF);
IPKey(Uint32 ip, Uint32 mask = 0xFFFFFFFF);
IPKey(const IPKey& ip);
~IPKey();
bool operator== (const IPKey& ip) const;
bool operator!= (const IPKey& ip) const;
bool operator < (const IPKey & ip) const;
IPKey& operator= (const IPKey& ip);
QString toString();
Uint32 m_ip;
Uint32 m_mask;
};
/**
* @author Ivan Vasic <ivasic@gmail.com>
* @brief Keeps track of blocked peers
*
* This class is used for keeping the IP addresses list of peers that
* have sent bad chunks.
*
* Peers that have sent >= 3 bad chunks are blocked.
*/
class IPBlocklist
{
IPBlocklist();
IPBlocklist(const IPBlocklist & );
const IPBlocklist& operator=(const IPBlocklist&);
public:
inline static IPBlocklist & instance()
{
static IPBlocklist singleton;
return singleton;
}
/**
* @brief Adds ip address to the list.
* It also increases the number of times this IP appeared in the list.
* @param ip QString containing the peer IP address
* @param state int number of bad chunks client from ip sent. Basically this parameter
* is used only to permanently block some IP (by setting this param to 3)
*/
void insert(QString ip, int state=1);
/**
* @brief Adds IP range to the list
* It is used for blocking plugin. For single IP use insert() instead.
* @param ip QString peer IP address. Uses ''*" for ranges.
**/
void addRange(QString ip);
/**
* @brief Removes IP range from list
* It is used for blocking plugin.
* @param ip QString peer IP address. Uses ''*" for ranges.
**/
void removeRange(QString ip);
/**
* Checks if IP is in the blocking list
* @param ip - IP address to check
* @returns true if IP is blocked
*/
bool isBlocked(const QString& ip);
/**
* @brief Sets the pointer to the IPBlockingInterface (IPBlocking plugin)
* Call this function from IPBlocking plugin when it gets loaded.
* @arg ptr - pointer to be set
*/
void setPluginInterfacePtr(kt::IPBlockingInterface* ptr);
/**
* @brief Unsets the interface pointer
* Call this when IPBlockingPlugin gets unloaded or deleted
*/
void unsetPluginInterfacePtr() { pluginInterface = 0; }
/**
* @brief This function will fill QStringList with all banned peer IP addresses.
* @return QStringList filled with blacklisted peers.
* It will create a new QStringList object so don't forget to delete it after using.
*/
QStringList* getBlocklist();
/**
* @brief This function will load blacklisted peers to IPFilter.
* @param list QStringList containing all banned peers.
* @note This function will remove current peers from blocklist before setting new list!!!
*/
void setBlocklist(QStringList* list);
private:
/**
* Pointer to the IPBlocking plugin which implements IPBlockingInterface
* Used to provide a way to use this plugin functions from within this class
*/
kt::IPBlockingInterface* pluginInterface;
/**
* @param IPKey - Key: Peer IP address and bit mask if it is a range
* @param int - Number of bad chunks sent.
**/
QMap<IPKey, int> m_peers;
/**
* @brief Adds IP range to the list.
* @param key IPKey that represents this IP range
* @param state int Number of 'warnings' for the range.
* Default is 3 - that means range is blocked permanently.
*/
void insertRangeIP(IPKey& key, int state=3);
/**
* Checks if IP is listed in local database (IPBlocklist::m_peers)
* @return TRUE if IP is to be blocked
*/
bool isBlockedLocal(const QString& ip);
/**
* Checks if IP is listed in plugins antip2p file
* @return TRUE if IP is to be blocked
*/
bool isBlockedPlugin(const QString& ip);
};
}
#endif
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