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 | #pragma once |
32 | |
33 | #if USE(ZLIB) |
34 | #include "WebSocketDeflater.h" |
35 | #endif |
36 | #include "WebSocketExtensionProcessor.h" |
37 | #include "WebSocketFrame.h" |
38 | |
39 | namespace WebCore { |
40 | |
41 | class WebSocketDeflateFramer; |
42 | |
43 | class DeflateResultHolder { |
44 | WTF_MAKE_FAST_ALLOCATED; |
45 | public: |
46 | explicit DeflateResultHolder(WebSocketDeflateFramer*); |
47 | ~DeflateResultHolder(); |
48 | |
49 | bool succeeded() const { return m_succeeded; } |
50 | String failureReason() const { return m_failureReason; } |
51 | |
52 | void fail(const String& failureReason); |
53 | |
54 | private: |
55 | WebSocketDeflateFramer* m_framer; |
56 | bool m_succeeded; |
57 | String m_failureReason; |
58 | }; |
59 | |
60 | class InflateResultHolder { |
61 | WTF_MAKE_FAST_ALLOCATED; |
62 | public: |
63 | explicit InflateResultHolder(WebSocketDeflateFramer*); |
64 | ~InflateResultHolder(); |
65 | |
66 | bool succeeded() const { return m_succeeded; } |
67 | String failureReason() const { return m_failureReason; } |
68 | |
69 | void fail(const String& failureReason); |
70 | |
71 | private: |
72 | WebSocketDeflateFramer* m_framer; |
73 | bool m_succeeded; |
74 | String m_failureReason; |
75 | }; |
76 | |
77 | class WebSocketDeflateFramer { |
78 | public: |
79 | WebSocketDeflateFramer(); |
80 | |
81 | std::unique_ptr<WebSocketExtensionProcessor> createExtensionProcessor(); |
82 | |
83 | bool canDeflate() const; |
84 | bool enabled() const { return m_enabled; } |
85 | |
86 | std::unique_ptr<DeflateResultHolder> deflate(WebSocketFrame&); |
87 | void resetDeflateContext(); |
88 | std::unique_ptr<InflateResultHolder> inflate(WebSocketFrame&); |
89 | void resetInflateContext(); |
90 | |
91 | void didFail(); |
92 | |
93 | #if USE(ZLIB) |
94 | void enableDeflate(int windowBits, WebSocketDeflater::ContextTakeOverMode); |
95 | #endif |
96 | |
97 | private: |
98 | bool m_enabled; |
99 | #if USE(ZLIB) |
100 | std::unique_ptr<WebSocketDeflater> m_deflater; |
101 | std::unique_ptr<WebSocketInflater> m_inflater; |
102 | #endif |
103 | }; |
104 | |
105 | } // namespace WebCore |
106 | |