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BUG#: 8278
TITLE: HTTP headers are unnecessarily converted to Strings
DESCRIPTION: Process HTTP header names and values as character strings where feasible.

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#ifndef Pegasus_ClientAuthenticator_h
#define Pegasus_ClientAuthenticator_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/Message.h>
#include <Pegasus/Common/HTTPMessage.h>
#include <Pegasus/Client/Linkage.h>


PEGASUS_NAMESPACE_BEGIN


/** This class owns client authentication
*/
class PEGASUS_CLIENT_LINKAGE ClientAuthenticator
{
public:

    enum AuthType { NONE, BASIC, DIGEST, LOCAL };

    /** Constuctor. */
    ClientAuthenticator();

    /** Destructor. */
    ~ClientAuthenticator();

    /** Build the request authentication header.
    */
    String buildRequestAuthHeader();

    /** Check whether the response header has authentication challenge
        (i.e, WWW-Authenticate header).
    */
    Boolean checkResponseHeaderForChallenge(Array<HTTPHeader> headers);

    /** Save the request message for resending on a challenge.
    */
    void setRequestMessage(Message* message);

    /** Get the request message saved for resending on a challenge while
        retaining memory ownership for the message.
    */
    Message* getRequestMessage();

    /** Get the request message saved for resending on a challenge and
        release memory ownership for the message.
    */
    Message* releaseRequestMessage();

    /** Clear the request buffer and other authentication informations
        from the earlier request.
    */
    void clear();

    /**
        Reset the challenge status for the connection.
    */
    void resetChallengeStatus();

    /** Set the user name
    */
    void setUserName(const String& userName);

    /** Get the user name
    */
    String getUserName();

    /** Set the upasswor
    */
    void setPassword(const String& password);

    /** Set the authentication type
    */
    void setAuthType(AuthType type);

    /** Get the authentication type
    */
    AuthType getAuthType();

private:

    String _buildLocalAuthResponse();

    String _getFileContent(const String& filePath);

    Boolean _parseAuthHeader(
        const char* authHeader,
        String& authType,
        String& authRealm);

    String _getSubStringUptoMarker(
        const char** line,
        char marker);

    AutoPtr<Message> _requestMessage;

    Boolean _challengeReceived;

    String _userName;
    String _password;

    String _localAuthFile;
    String _localAuthFileContent;

    AuthType _authType;
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_ClientAuthenticator_h */