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#ifndef Pegasus_NegotiateAuthenticationHandler_h
#define Pegasus_NegotiateAuthenticationHandler_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/String.h>
#include <Pegasus/Common/AutoPtr.h>

#include <Pegasus/Security/Authentication/Linkage.h>
#include "Authenticator.h"

PEGASUS_NAMESPACE_BEGIN

/**
    This class implements the AuthenticationHandler for SPNEGO authenticator,
    as described in RFC 4559.  It extends the Authenticator and provides the
    implementation (using MIT Kerberos).
*/

#ifdef PEGASUS_NEGOTIATE_AUTHENTICATION

class PEGASUS_SECURITY_LINKAGE NegotiateAuthenticationHandler
    : public Authenticator
{
public:

    /** Constructors  */
    NegotiateAuthenticationHandler();

    /** Destructor  */
    ~NegotiateAuthenticationHandler();

    /** Verify the authentication of the user passed in the authorization
        header.
        @param authHeader String containing the Authorization header
        @param authInfo Reference to AuthenticationInfo object
        @return AuthenticationStatus holding http status code and error detail
    */
    AuthenticationStatus authenticate(
        const String& authHeader,
        AuthenticationInfo* authInfo);

    /** Construct and return the Pegasus Local authentication challenge header
        @param authType String containing the HTTP authentication type
        @param userName String containing the user name
        @param authInfo Reference to AuthenticationInfo object
        @return A string containing the authentication challenge header.
    */
    String getAuthResponseHeader(
        const String& authType = String::EMPTY,
        const String& userName = String::EMPTY,
        AuthenticationInfo* authInfo = 0);

    /**
        Verify whether the user is valid.
        @param userName String containing the user name
        @param authInfo reference to AuthenticationInfo object that holds the
        authentication information for the given connection.
        @return AuthenticationStatus holding http status code and error detail
    */
    AuthenticationStatus validateUser(
        const String& userName,
        AuthenticationInfo* authInfo = 0);

};


#endif
PEGASUS_NAMESPACE_END

#endif /* Pegasus_NegotiateAuthenticationHandler_h*/