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Side by Side Diff: net/quic/crypto/crypto_framer.h

Issue 14816006: Land Recent QUIC changes (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Added missing NET_PRIVATE_EXPORT to QuicWallTime Created 7 years, 7 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_ 5 #ifndef NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_
6 #define NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_ 6 #define NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_
7 7
8 #include <utility> 8 #include <utility>
9 #include <vector> 9 #include <vector>
10 10
(...skipping 38 matching lines...) Expand 10 before | Expand all | Expand 10 after
49 static CryptoHandshakeMessage* ParseMessage(base::StringPiece in); 49 static CryptoHandshakeMessage* ParseMessage(base::StringPiece in);
50 50
51 // Set callbacks to be called from the framer. A visitor must be set, or 51 // Set callbacks to be called from the framer. A visitor must be set, or
52 // else the framer will crash. It is acceptable for the visitor to do 52 // else the framer will crash. It is acceptable for the visitor to do
53 // nothing. If this is called multiple times, only the last visitor 53 // nothing. If this is called multiple times, only the last visitor
54 // will be used. |visitor| will be owned by the framer. 54 // will be used. |visitor| will be owned by the framer.
55 void set_visitor(CryptoFramerVisitorInterface* visitor) { 55 void set_visitor(CryptoFramerVisitorInterface* visitor) {
56 visitor_ = visitor; 56 visitor_ = visitor;
57 } 57 }
58 58
59 QuicErrorCode error() const { 59 QuicErrorCode error() const { return error_; }
60 return error_;
61 }
62 60
63 // Processes input data, which must be delivered in order. Returns 61 // Processes input data, which must be delivered in order. Returns
64 // false if there was an error, and true otherwise. 62 // false if there was an error, and true otherwise.
65 bool ProcessInput(base::StringPiece input); 63 bool ProcessInput(base::StringPiece input);
66 64
67 // Returns the number of bytes of buffered input data remaining to be 65 // Returns the number of bytes of buffered input data remaining to be
68 // parsed. 66 // parsed.
69 size_t InputBytesRemaining() const { 67 size_t InputBytesRemaining() const { return buffer_.length(); }
70 return buffer_.length();
71 }
72 68
73 // Returns a new QuicData owned by the caller that contains a serialized 69 // Returns a new QuicData owned by the caller that contains a serialized
74 // |message|, or NULL if there was an error. 70 // |message|, or NULL if there was an error.
75 static QuicData* ConstructHandshakeMessage( 71 static QuicData* ConstructHandshakeMessage(
76 const CryptoHandshakeMessage& message); 72 const CryptoHandshakeMessage& message);
77 73
78 private: 74 private:
79 // Clears per-message state. Does not clear the visitor. 75 // Clears per-message state. Does not clear the visitor.
80 void Clear(); 76 void Clear();
81 77
82 void set_error(QuicErrorCode error) { 78 void set_error(QuicErrorCode error) { error_ = error; }
83 error_ = error;
84 }
85 79
86 // Represents the current state of the parsing state machine. 80 // Represents the current state of the parsing state machine.
87 enum CryptoFramerState { 81 enum CryptoFramerState {
88 STATE_READING_TAG, 82 STATE_READING_TAG,
89 STATE_READING_NUM_ENTRIES, 83 STATE_READING_NUM_ENTRIES,
90 STATE_READING_TAGS_AND_LENGTHS, 84 STATE_READING_TAGS_AND_LENGTHS,
91 STATE_READING_VALUES 85 STATE_READING_VALUES
92 }; 86 };
93 87
94 // Visitor to invoke when messages are parsed. 88 // Visitor to invoke when messages are parsed.
95 CryptoFramerVisitorInterface* visitor_; 89 CryptoFramerVisitorInterface* visitor_;
96 // Last error. 90 // Last error.
97 QuicErrorCode error_; 91 QuicErrorCode error_;
98 // Remaining unparsed data. 92 // Remaining unparsed data.
99 std::string buffer_; 93 std::string buffer_;
100 // Current state of the parsing. 94 // Current state of the parsing.
101 CryptoFramerState state_; 95 CryptoFramerState state_;
102 // The message currently being parsed. 96 // The message currently being parsed.
103 CryptoHandshakeMessage message_; 97 CryptoHandshakeMessage message_;
104 // Number of entires in the message currently being parsed. 98 // Number of entires in the message currently being parsed.
105 uint16 num_entries_; 99 uint16 num_entries_;
106 // tags_and_lengths_ contains the tags that are currently being parsed and 100 // tags_and_lengths_ contains the tags that are currently being parsed and
107 // their lengths. 101 // their lengths.
108 std::vector<std::pair<CryptoTag, size_t> > tags_and_lengths_; 102 std::vector<std::pair<QuicTag, size_t> > tags_and_lengths_;
109 // Cumulative length of all values in the message currently being parsed. 103 // Cumulative length of all values in the message currently being parsed.
110 size_t values_len_; 104 size_t values_len_;
111 }; 105 };
112 106
113 } // namespace net 107 } // namespace net
114 108
115 #endif // NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_ 109 #endif // NET_QUIC_CRYPTO_CRYPTO_FRAMER_H_
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