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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
//
// 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 3 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.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library.  Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//

#include "vmime/config.hpp"


#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT


#include "vmime/security/sasl/XOAuth2SASLAuthenticator.hpp"

#include "vmime/security/sasl/SASLMechanism.hpp"
#include "vmime/security/sasl/SASLSession.hpp"
#include "vmime/security/sasl/SASLContext.hpp"


namespace vmime {
namespace security {
namespace sasl {


XOAuth2SASLAuthenticator::XOAuth2SASLAuthenticator(const Mode mode)
	: m_mode(mode) {

}


XOAuth2SASLAuthenticator::~XOAuth2SASLAuthenticator() {

}


const std::vector <shared_ptr <SASLMechanism> >
	XOAuth2SASLAuthenticator::getAcceptableMechanisms(
		const std::vector <shared_ptr <SASLMechanism> >& available,
		const shared_ptr <SASLMechanism>& suggested
	) const {

	if (m_mode == MODE_EXCLUSIVE) {

		std::vector <shared_ptr <SASLMechanism> > mechs;

		for (size_t i = available.size() ; i != 0 ; --i) {

			shared_ptr <SASLMechanism> mech = available[i - 1];

			if ("XOAUTH2" == mech->getName()) {
				// Only allow XOAuth2
				mechs.push_back(mech);
			}
		}

		return mechs;

	} else {

		shared_ptr <SASLMechanism> newSuggested(suggested);

		for (size_t i = available.size() ; i != 0 ; --i) {

			shared_ptr <SASLMechanism> mech = available[i - 1];

			if ("XOAUTH2" == mech->getName()) {
				// Suggest using XOAuth2
				newSuggested = mech;
			}
		}

		return defaultSASLAuthenticator::getAcceptableMechanisms(available, newSuggested);
	}
}


} // sasl
} // security
} // vmime


#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_SASL_SUPPORT