/*

 * Copyright (C) 2009 Google Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimer.

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "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 COPYRIGHT

 * OWNER OR CONTRIBUTORS 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 WebSocketHandshake_h

#define WebSocketHandshake_h

#if ENABLE(WEB_SOCKETS)

#include "KURL.h"

#include "PlatformString.h"

#include "WebSocketHandshakeRequest.h"

#include "WebSocketHandshakeResponse.h"

#include <wtf/Noncopyable.h>

namespace WebCore {

    class ScriptExecutionContext;

    class WebSocketHandshake : public Noncopyable {

    public:

        enum Mode {

            Incomplete, Normal, Failed, Connected

        };

        WebSocketHandshake(const KURL&, const String& protocol, ScriptExecutionContext*);

        ~WebSocketHandshake();

        const KURL& url() const;

        void setURL(const KURL&);

        const String host() const;

        const String& clientProtocol() const;

        void setClientProtocol(const String& protocol);

        bool secure() const;

        String clientOrigin() const;

        String clientLocation() const;

        CString clientHandshakeMessage() const;

        WebSocketHandshakeRequest clientHandshakeRequest() const;

        void reset();

        void clearScriptExecutionContext();

        int readServerHandshake(const char* header, size_t len);

        Mode mode() const;

        const String& serverWebSocketOrigin() const;

        void setServerWebSocketOrigin(const String& webSocketOrigin);

        const String& serverWebSocketLocation() const;

        void setServerWebSocketLocation(const String& webSocketLocation);

        const String& serverWebSocketProtocol() const;

        void setServerWebSocketProtocol(const String& webSocketProtocol);

        const String& serverSetCookie() const;

        void setServerSetCookie(const String& setCookie);

        const String& serverSetCookie2() const;

        void setServerSetCookie2(const String& setCookie2);

        const WebSocketHandshakeResponse& serverHandshakeResponse() const;

    private:

        KURL httpURLForAuthenticationAndCookies() const;

        int readStatusLine(const char* header, size_t headerLength, int& statusCode, String& statusText);

        // Reads all headers except for the two predefined ones.

        const char* readHTTPHeaders(const char* start, const char* end);

        void processHeaders();

        bool checkResponseHeaders();

        KURL m_url;

        String m_clientProtocol;

        bool m_secure;

        ScriptExecutionContext* m_context;

        Mode m_mode;

        String m_wsOrigin;

        String m_wsLocation;

        String m_wsProtocol;

        String m_setCookie;

        String m_setCookie2;

        String m_secWebSocketKey1;

        String m_secWebSocketKey2;

        unsigned char m_key3[8];

        unsigned char m_expectedChallengeResponse[16];

        WebSocketHandshakeResponse m_response;

    };

} // namespace WebCore

#endif // ENABLE(WEB_SOCKETS)

#endif // WebSocketHandshake_h