1/*
2 * Copyright (C) 2012 Google Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WebSocketExtensionDispatcher_h
32#define WebSocketExtensionDispatcher_h
33
34#if ENABLE(WEB_SOCKETS)
35
36#include "WebSocketExtensionProcessor.h"
37#include <wtf/OwnPtr.h>
38#include <wtf/PassOwnPtr.h>
39#include <wtf/Vector.h>
40#include <wtf/text/StringBuilder.h>
41#include <wtf/text/WTFString.h>
42
43namespace WebCore {
44
45class WebSocketExtensionDispatcher {
46public:
47    WebSocketExtensionDispatcher() { }
48
49    void reset();
50    void addProcessor(PassOwnPtr<WebSocketExtensionProcessor>);
51    const String createHeaderValue() const;
52
53    bool processHeaderValue(const String&);
54    String acceptedExtensions() const;
55    String failureReason() const;
56
57private:
58    void appendAcceptedExtension(const String& extensionToken, HashMap<String, String>& extensionParameters);
59    void fail(const String& reason);
60
61    Vector<OwnPtr<WebSocketExtensionProcessor>> m_processors;
62    StringBuilder m_acceptedExtensionsBuilder;
63    String m_failureReason;
64};
65
66}
67
68#endif // ENABLE(WEB_SOCKETS)
69
70#endif // WebSocketExtensionDispatcher_h
71