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/*
* Copyright (C) 2001-2006 Jacek Sieka, arnetheduck on gmail point 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined(CONNECTION_MANAGER_H)
#define CONNECTION_MANAGER_H
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "TimerManager.h"
#include "UserConnection.h"
#include "User.h"
#include "CriticalSection.h"
#include "Singleton.h"
#include "Util.h"
#include "ConnectionManagerListener.h"
class ConnectionQueueItem {
public:
typedef ConnectionQueueItem* Ptr;
typedef vector<Ptr> List;
typedef List::iterator Iter;
enum State {
CONNECTING, // Recently sent request to connect
WAITING, // Waiting to send request to connect
NO_DOWNLOAD_SLOTS, // Not needed right now
ACTIVE // In one up/downmanager
};
ConnectionQueueItem(const User::Ptr& aUser, bool aDownload) : state(WAITING), lastAttempt(0), download(aDownload), user(aUser) { }
User::Ptr& getUser() { return user; }
const User::Ptr& getUser() const { return user; }
GETSET(State, state, State);
GETSET(u_int32_t, lastAttempt, LastAttempt);
GETSET(bool, download, Download);
private:
ConnectionQueueItem(const ConnectionQueueItem&);
ConnectionQueueItem& operator=(const ConnectionQueueItem&);
User::Ptr user;
};
class ExpectedMap {
public:
void add(const string& aNick, const string& aMyNick, const string& aHubUrl) {
Lock l(cs);
expectedConnections.insert(make_pair(aNick, make_pair(aMyNick, aHubUrl)));
}
pair<string, string> remove(const string& aNick) {
Lock l(cs);
ExpectMap::iterator i = expectedConnections.find(aNick);
if(i == expectedConnections.end()) return make_pair(Util::emptyString, Util::emptyString);
pair<string, string> tmp = make_pair(i->second.first, i->second.second);
expectedConnections.erase(i);
return tmp;
}
private:
/** Nick -> myNick, hubUrl for expected NMDC incoming connections */
typedef map<string, pair<string, string> > ExpectMap;
ExpectMap expectedConnections;
CriticalSection cs;
};
// Comparing with a user...
inline bool operator==(ConnectionQueueItem::Ptr ptr, const User::Ptr& aUser) { return ptr->getUser() == aUser; }
class ConnectionManager : public Speaker<ConnectionManagerListener>,
public UserConnectionListener, TimerManagerListener,
public Singleton<ConnectionManager>
{
public:
void nmdcExpect(const string& aNick, const string& aMyNick, const string& aHubUrl) {
expectedConnections.add(aNick, aMyNick, aHubUrl);
}
void nmdcConnect(const string& aServer, short aPort, const string& aMyNick, const string& hubUrl);
void adcConnect(const OnlineUser& aUser, short aPort, const string& aToken, bool secure);
void getDownloadConnection(const User::Ptr& aUser);
void disconnect(const User::Ptr& aUser, int isDownload);
void shutdown();
/** Find a suitable port to listen on, and start doing it */
void listen() throw(Exception);
void disconnect() throw() {
delete server;
delete secureServer;
server = secureServer = 0;
port = securePort = 0;
}
unsigned short getPort() { return port; }
unsigned short getSecurePort() { return securePort; }
private:
class Server : public Thread {
public:
Server(bool secure_, short port, const string& ip = "0.0.0.0");
virtual ~Server() { die = true; join(); }
private:
virtual int run() throw();
Socket sock;
bool secure;
bool die;
};
friend class Server;
CriticalSection cs;
unsigned short port;
unsigned short securePort;
/** All ConnectionQueueItems */
ConnectionQueueItem::List downloads;
ConnectionQueueItem::List uploads;
/** All active connections */
UserConnection::List userConnections;
User::List checkIdle;
StringList features;
StringList adcFeatures;
ExpectedMap expectedConnections;
u_int32_t floodCounter;
Server* server;
Server* secureServer;
bool shuttingDown;
friend class Singleton<ConnectionManager>;
ConnectionManager();
virtual ~ConnectionManager() throw() { shutdown(); }
UserConnection* getConnection(bool aNmdc, bool secure) throw();
void putConnection(UserConnection* aConn);
void addUploadConnection(UserConnection* uc);
void addDownloadConnection(UserConnection* uc);
ConnectionQueueItem* getCQI(const User::Ptr& aUser, bool download);
void putCQI(ConnectionQueueItem* cqi);
void accept(const Socket& sock, bool secure) throw();
// UserConnectionListener
virtual void on(Connected, UserConnection*) throw();
virtual void on(Failed, UserConnection*, const string&) throw();
virtual void on(CLock, UserConnection*, const string&, const string&) throw();
virtual void on(Key, UserConnection*, const string&) throw();
virtual void on(Direction, UserConnection*, const string&, const string&) throw();
virtual void on(MyNick, UserConnection*, const string&) throw();
virtual void on(Supports, UserConnection*, const StringList&) throw();
virtual void on(AdcCommand::SUP, UserConnection*, const AdcCommand&) throw();
virtual void on(AdcCommand::INF, UserConnection*, const AdcCommand&) throw();
virtual void on(AdcCommand::STA, UserConnection*, const AdcCommand&) throw();
// TimerManagerListener
virtual void on(TimerManagerListener::Second, u_int32_t aTick) throw();
virtual void on(TimerManagerListener::Minute, u_int32_t aTick) throw();
};
#endif // !defined(CONNECTION_MANAGER_H)
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