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/* Copyright 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/client/sasl_client_session.h"
#include <sasl/sasl.h>
namespace mongo {
/**
* Implementation of the client side of a SASL authentication conversation.
* using the Cyrus SASL library.
*/
class CyrusSaslClientSession : public SaslClientSession {
MONGO_DISALLOW_COPYING(CyrusSaslClientSession);
public:
CyrusSaslClientSession();
~CyrusSaslClientSession();
/**
* Overriding to store the password data in sasl_secret_t format
*/
virtual void setParameter(Parameter id, StringData value);
/**
* Returns the value of the parameterPassword parameter in the form of a sasl_secret_t, used
* by the Cyrus SASL library's SASL_CB_PASS callback. The session object owns the storage
* referenced by the returned sasl_secret_t*, which will remain in scope according to the
* same rules as given for SaslClientSession::getParameter().
*/
sasl_secret_t* getPasswordAsSecret();
virtual Status initialize();
virtual Status step(StringData inputData, std::string* outputData);
virtual bool isDone() const {
return _done;
}
private:
/// Maximum number of Cyrus SASL callbacks stored in _callbacks.
static const int maxCallbacks = 4;
/// Underlying Cyrus SASL library connection object.
sasl_conn_t* _saslConnection;
// Number of successfully completed conversation steps.
int _step;
/// See isDone().
bool _done;
/// Stored of password in sasl_secret_t format
std::unique_ptr<char[]> _secret;
/// Callbacks registered on _saslConnection for providing the Cyrus SASL library with
/// parameter values, etc.
sasl_callback_t _callbacks[maxCallbacks];
};
} // namespace mongo
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