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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SASLMECHANISM_H_
#define _SASLMECHANISM_H_
#include <string>
namespace buzz {
class XmlElement;
// Defines a mechnanism to do SASL authentication.
// Subclass instances should have a self-contained way to present
// credentials.
class SaslMechanism {
public:
// Intended to be subclassed
virtual ~SaslMechanism() {}
// Should return the name of the SASL mechanism, e.g., "PLAIN"
virtual std::string GetMechanismName() = 0;
// Should generate the initial "auth" request. Default is just <auth/>.
virtual XmlElement * StartSaslAuth();
// Should respond to a SASL "<challenge>" request. Default is
// to abort (for mechanisms that do not do challenge-response)
virtual XmlElement * HandleSaslChallenge(const XmlElement * challenge);
// Notification of a SASL "<success>". Sometimes information
// is passed on success.
virtual void HandleSaslSuccess(const XmlElement * success);
// Notification of a SASL "<failure>". Sometimes information
// for the user is passed on failure.
virtual void HandleSaslFailure(const XmlElement * failure);
protected:
static std::string Base64Encode(const std::string & plain);
static std::string Base64Decode(const std::string & encoded);
static std::string Base64EncodeFromArray(const char * plain, size_t length);
};
}
#endif
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