ClientManager.h

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/*
 * Copyright (C) 2006-2010 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.
 */

#ifndef ADCHPP_CLIENTMANAGER_H
#define ADCHPP_CLIENTMANAGER_H

#include "CID.h"
#include "AdcCommand.h"
#include "Signal.h"
#include "Client.h"
#include "Singleton.h"
#include "Hub.h"
#include "Bot.h"

namespace adchpp {

class ManagedSocket;

class ClientManager : public Singleton<ClientManager>, public CommandHandler<ClientManager>
{
public:
    typedef std::unordered_map<uint32_t, Entity*> EntityMap;
    typedef EntityMap::iterator EntityIter;

    ADCHPP_DLL uint32_t getSID(const std::string& nick) const throw();
    ADCHPP_DLL uint32_t getSID(const CID& cid) const throw();

    ADCHPP_DLL Entity* getEntity(uint32_t aSid) throw();

    ADCHPP_DLL Bot* createBot(const Bot::SendHandler& handler);
    ADCHPP_DLL void regBot(Bot& bot);

    EntityMap& getEntities() throw() { return entities; }

    ADCHPP_DLL void send(const AdcCommand& cmd) throw();

    ADCHPP_DLL void sendToAll(const BufferPtr& buffer) throw();

    ADCHPP_DLL void sendTo(const BufferPtr& buffer, uint32_t to);

    ADCHPP_DLL void enterIdentify(Entity& c, bool sendData) throw();

    ADCHPP_DLL ByteVector enterVerify(Entity& c, bool sendData) throw();

    ADCHPP_DLL bool enterNormal(Entity& c, bool sendData, bool sendOwnInf) throw();

    ADCHPP_DLL bool verifySUP(Entity& c, AdcCommand& cmd) throw();

    ADCHPP_DLL bool verifyINF(Entity& c, AdcCommand& cmd) throw();

    ADCHPP_DLL bool verifyNick(Entity& c, const AdcCommand& cmd) throw();

    ADCHPP_DLL bool verifyPassword(Entity& c, const std::string& password, const ByteVector& salt, const std::string& suppliedHash);

    ADCHPP_DLL bool verifyIp(Client& c, AdcCommand& cmd) throw();

    ADCHPP_DLL bool verifyCID(Entity& c, AdcCommand& cmd) throw();

    ADCHPP_DLL bool verifyOverflow(Entity& c);

    ADCHPP_DLL void setState(Entity& c, Entity::State newState) throw();

    ADCHPP_DLL size_t getQueuedBytes() throw();

    typedef SignalTraits<void (Entity&)> SignalConnected;
    typedef SignalTraits<void (Entity&, AdcCommand&, bool&)> SignalReceive;
    typedef SignalTraits<void (Entity&, const std::string&)> SignalBadLine;
    typedef SignalTraits<void (Entity&, const AdcCommand&, bool&)> SignalSend;
    typedef SignalTraits<void (Entity&, int)> SignalState;
    typedef SignalTraits<void (Entity&)> SignalDisconnected;

    SignalConnected::Signal& signalConnected() { return signalConnected_; }
    SignalReceive::Signal& signalReceive() { return signalReceive_; }
    SignalBadLine::Signal& signalBadLine() { return signalBadLine_; }
    SignalSend::Signal& signalSend() { return signalSend_; }
    SignalState::Signal& signalState() { return signalState_; }
    SignalDisconnected::Signal& signalDisconnected() { return signalDisconnected_; }

    void setLoginTimeout(uint32_t millis) { loginTimeout = millis; }
    uint32_t getLoginTimeout() { return loginTimeout; }

private:
    friend class Client;
    friend class Entity;
    friend class Bot;

    std::list<std::pair<Client*, uint32_t> > logins;

    EntityMap entities;
    typedef std::unordered_map<std::string, Entity*> NickMap;
    NickMap nicks;
    typedef std::unordered_map<CID, Entity*> CIDMap;
    CIDMap cids;

    Hub hub;

    size_t loginTimeout;

    // Temporary string to use whenever a temporary string is needed (to avoid (de)allocating memory all the time...)
    std::string strtmp;

    static const std::string className;

    friend class Singleton<ClientManager>;
    ADCHPP_DLL static ClientManager* instance;

    friend class CommandHandler<ClientManager>;

    uint32_t makeSID();

    void maybeSend(Entity& c, const AdcCommand& cmd);

    void removeLogins(Entity& c) throw();
    void removeEntity(Entity& c) throw();

    bool handle(AdcCommand::SUP, Entity& c, AdcCommand& cmd) throw();
    bool handle(AdcCommand::INF, Entity& c, AdcCommand& cmd) throw();
    bool handleDefault(Entity& c, AdcCommand& cmd) throw();

    template<typename T> bool handle(T, Entity& c, AdcCommand& cmd) throw() { return handleDefault(c, cmd); }

    void handleIncoming(const ManagedSocketPtr& sock) throw();

    void onConnected(Client&) throw();
    void onReceive(Entity&, AdcCommand&) throw();
    void onBadLine(Client&, const std::string&) throw();
    void onFailed(Client&, const boost::system::error_code& e) throw();

    void badState(Entity& c, const AdcCommand& cmd) throw();

    SignalConnected::Signal signalConnected_;
    SignalReceive::Signal signalReceive_;
    SignalBadLine::Signal signalBadLine_;
    SignalSend::Signal signalSend_;
    SignalState::Signal signalState_;
    SignalDisconnected::Signal signalDisconnected_;

    ClientManager() throw();

    virtual ~ClientManager() throw();

};

}

#endif // CLIENTMANAGER_H