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//
// VMime library (http://vmime.sourceforge.net)
// Copyright (C) 2002-2004 Vincent Richard <[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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
#ifndef VMIME_MESSAGING_SERVICEFACTORY_HPP_INCLUDED
#define VMIME_MESSAGING_SERVICEFACTORY_HPP_INCLUDED
#include <map>
#include "../types.hpp"
#include "../base.hpp"
#include "../utility/singleton.hpp"
#include "../utility/stringUtils.hpp"
#include "serviceInfos.hpp"
#include "authenticator.hpp"
#include "progressionListener.hpp"
#include "timeoutHandler.hpp"
#include "url.hpp"
namespace vmime {
namespace messaging {
class service;
class session;
/** A factory to create 'service' objects for a specified protocol.
*/
class serviceFactory : public utility::singleton <serviceFactory>
{
friend class utility::singleton <serviceFactory>;
private:
serviceFactory();
~serviceFactory();
public:
/** Information about a registered service. */
class registeredService
{
friend class serviceFactory;
protected:
virtual ~registeredService() { }
public:
virtual service* create(session* sess, authenticator* auth) const = 0;
virtual const string& getName() const = 0;
virtual const serviceInfos& getInfos() const = 0;
};
private:
template <class S>
class registeredServiceImpl : public registeredService
{
friend class serviceFactory;
protected:
registeredServiceImpl(const string& name)
: m_name(name), m_servInfos(S::getInfosInstance())
{
}
public:
service* create(session* sess, authenticator* auth) const
{
return new S(sess, auth);
}
const serviceInfos& getInfos() const
{
return (m_servInfos);
}
const string& getName() const
{
return (m_name);
}
private:
const string m_name;
const serviceInfos& m_servInfos;
};
std::vector <registeredService*> m_services;
public:
/** Register a new service by its protocol name.
*
* @param protocol protocol name
*/
template <class S>
void registerServiceByProtocol(const string& protocol)
{
const string name = stringUtils::toLower(protocol);
m_services.push_back(new registeredServiceImpl <S>(name));
}
/** Create a new service instance from a protocol name.
*
* @param sess session
* @param protocol protocol name (eg. "pop3")
* @param auth authenticator used to provide credentials (can be NULL if not used)
* @return a new service instance for the specified protocol
* @throw exceptions::no_service_available if no service is registered
* for this protocol
*/
service* create(session* sess, const string& protocol, authenticator* auth = NULL);
/** Create a new service instance from a URL.
*
* @param sess session
* @param u full URL with at least protocol and server (you can also specify
* port, username and password)
* @param auth authenticator used to provide credentials (can be NULL if not used)
* @return a new service instance for the specified protocol
* @throw exceptions::no_service_available if no service is registered
* for this protocol
*/
service* create(session* sess, const url& u, authenticator* auth = NULL);
/** Return information about a registered protocol.
*
* @param protocol protocol name
* @return information about this protocol
* @throw exceptions::no_service_available if no service is registered
* for this protocol
*/
const registeredService* getServiceByProtocol(const string& protocol) const;
/** Return the number of registered services.
*
* @return number of registered services
*/
const int getServiceCount() const;
/** Return the registered service at the specified position.
*
* @param pos position of the registered service to return
* @return registered service at the specified position
*/
const registeredService* getServiceAt(const int pos) const;
/** Return a list of all registered services.
*
* @return list of registered services
*/
const std::vector <const registeredService*> getServiceList() const;
};
} // messaging
} // vmime
#endif // VMIME_MESSAGING_SERVICEFACTORY_HPP_INCLUDED
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