line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
#include "Parser.h" |
2
|
|
|
|
|
|
|
#include |
3
|
|
|
|
|
|
|
#include |
4
|
|
|
|
|
|
|
#include |
5
|
|
|
|
|
|
|
|
6
|
|
|
|
|
|
|
namespace panda { namespace protocol { namespace websocket { |
7
|
|
|
|
|
|
|
|
8
|
|
|
|
|
|
|
using std::cout; |
9
|
|
|
|
|
|
|
using std::endl; |
10
|
|
|
|
|
|
|
|
11
|
279
|
|
|
|
|
|
void Parser::configure (const Config& cfg) { |
12
|
279
|
|
|
|
|
|
_max_frame_size = cfg.max_frame_size; |
13
|
279
|
|
|
|
|
|
_max_message_size = cfg.max_message_size; |
14
|
279
|
|
|
|
|
|
_max_handshake_size = cfg.max_handshake_size; |
15
|
279
|
|
|
|
|
|
_check_utf8 = cfg.check_utf8; |
16
|
|
|
|
|
|
|
|
17
|
279
|
100
|
|
|
|
|
if (!_flags[ESTABLISHED]) { |
18
|
275
|
|
|
|
|
|
_deflate_cfg = cfg.deflate; |
19
|
275
|
100
|
|
|
|
|
if (_deflate_cfg) _deflate_cfg->max_message_size = _max_message_size; |
20
|
|
|
|
|
|
|
} |
21
|
|
|
|
|
|
|
|
22
|
279
|
50
|
|
|
|
|
if (_frame) _frame->max_size(_max_frame_size); |
23
|
279
|
50
|
|
|
|
|
if (_message) _message->max_size(_max_message_size); |
24
|
279
|
|
|
|
|
|
_message_frame.max_size(_max_frame_size); |
25
|
279
|
|
|
|
|
|
} |
26
|
|
|
|
|
|
|
|
27
|
132
|
|
|
|
|
|
void Parser::reset () { |
28
|
132
|
|
|
|
|
|
_buffer.clear(); |
29
|
132
|
|
|
|
|
|
_flags.reset(); |
30
|
132
|
|
|
|
|
|
_frame = NULL; |
31
|
132
|
|
|
|
|
|
_frame_count = 0; |
32
|
132
|
|
|
|
|
|
_message = NULL; |
33
|
132
|
|
|
|
|
|
_message_frame.reset(); |
34
|
132
|
50
|
|
|
|
|
if (_deflate_ext) _deflate_ext->reset(); |
35
|
132
|
|
|
|
|
|
_suggested_close_code = 0; |
36
|
132
|
|
|
|
|
|
} |
37
|
|
|
|
|
|
|
|
38
|
76185
|
|
|
|
|
|
bool Parser::_parse_frame (Frame& frame) { |
39
|
76185
|
50
|
|
|
|
|
if (!frame.parse(_buffer)) { |
|
|
100
|
|
|
|
|
|
40
|
75720
|
|
|
|
|
|
_buffer.clear(); |
41
|
75720
|
|
|
|
|
|
return false; |
42
|
|
|
|
|
|
|
} |
43
|
|
|
|
|
|
|
|
44
|
75
|
|
|
|
|
|
auto _err = [&]() -> bool { |
45
|
75
|
|
|
|
|
|
_buffer.clear(); |
46
|
75
|
|
|
|
|
|
_frame_count = 0; |
47
|
75
|
|
|
|
|
|
_flags.reset(RECV_FRAME); |
48
|
75
|
|
|
|
|
|
_flags.reset(RECV_INFLATE); |
49
|
75
|
|
|
|
|
|
_utf8_checker.reset(); |
50
|
75
|
100
|
|
|
|
|
if (frame.error & errc::invalid_utf8) _suggested_close_code = CloseCode::INVALID_TEXT; |
51
|
73
|
100
|
|
|
|
|
else if (frame.error & errc::max_frame_size) _suggested_close_code = CloseCode::MAX_SIZE; |
52
|
71
|
|
|
|
|
|
else _suggested_close_code = CloseCode::PROTOCOL_ERROR; |
53
|
|
|
|
|
|
|
|
54
|
75
|
|
|
|
|
|
return true; |
55
|
465
|
|
|
|
|
|
}; |
56
|
|
|
|
|
|
|
|
57
|
12
|
|
|
|
|
|
auto _seterr = [&](const std::error_code& ec) -> bool { |
58
|
12
|
|
|
|
|
|
frame.error = ec; |
59
|
12
|
|
|
|
|
|
return _err(); |
60
|
465
|
|
|
|
|
|
}; |
61
|
|
|
|
|
|
|
|
62
|
465
|
100
|
|
|
|
|
if (frame.error) return _err(); |
|
|
50
|
|
|
|
|
|
63
|
|
|
|
|
|
|
|
64
|
406
|
50
|
|
|
|
|
if (frame.is_control()) { // control frames can't be fragmented, no need to increment frame count |
|
|
100
|
|
|
|
|
|
65
|
40
|
100
|
|
|
|
|
if (!_frame_count) _flags.reset(RECV_FRAME); // do not reset state if control frame arrives in the middle of message |
|
|
50
|
|
|
|
|
|
66
|
40
|
100
|
|
|
|
|
if (frame.opcode() == Opcode::CLOSE) { |
67
|
17
|
|
|
|
|
|
_buffer.clear(); |
68
|
17
|
50
|
|
|
|
|
_flags.set(RECV_CLOSED); |
69
|
17
|
100
|
|
|
|
|
if (frame.close_code() == CloseCode::UNKNOWN) _suggested_close_code = CloseCode::DONE; |
70
|
13
|
|
|
|
|
|
else _suggested_close_code = frame.close_code(); |
71
|
|
|
|
|
|
|
|
72
|
17
|
100
|
|
|
|
|
if (_check_utf8 && frame.close_message()) { |
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
73
|
3
|
|
|
|
|
|
_utf8_checker.reset(); |
74
|
3
|
50
|
|
|
|
|
if (!_utf8_checker.write(frame.close_message()) || !_utf8_checker.finish()) return _seterr(errc::invalid_utf8); |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
75
|
|
|
|
|
|
|
} |
76
|
|
|
|
|
|
|
} |
77
|
39
|
|
|
|
|
|
return true; |
78
|
|
|
|
|
|
|
} |
79
|
|
|
|
|
|
|
|
80
|
366
|
100
|
|
|
|
|
if (_frame_count == 0) { |
81
|
228
|
100
|
|
|
|
|
if (frame.opcode() == Opcode::CONTINUE) return _seterr(errc::initial_continue); |
|
|
50
|
|
|
|
|
|
82
|
224
|
100
|
|
|
|
|
if (frame.rsv1()) { |
83
|
43
|
100
|
|
|
|
|
if (_deflate_ext) _flags.set(RECV_INFLATE); |
|
|
50
|
|
|
|
|
|
84
|
2
|
50
|
|
|
|
|
else return _seterr(errc::unexpected_rsv); |
85
|
|
|
|
|
|
|
} |
86
|
222
|
50
|
|
|
|
|
if (frame.rsv2() | frame.rsv3()) return _seterr(errc::unexpected_rsv); |
|
|
0
|
|
|
|
|
|
87
|
|
|
|
|
|
|
} |
88
|
|
|
|
|
|
|
else { |
89
|
138
|
100
|
|
|
|
|
if (frame.opcode() != Opcode::CONTINUE) return _seterr(errc::fragment_no_continue); |
|
|
50
|
|
|
|
|
|
90
|
|
|
|
|
|
|
} |
91
|
|
|
|
|
|
|
|
92
|
356
|
100
|
|
|
|
|
if (_flags[RECV_INFLATE]) { |
93
|
50
|
50
|
|
|
|
|
_deflate_ext->uncompress(frame); |
94
|
50
|
100
|
|
|
|
|
if (frame.error) return _err(); |
|
|
50
|
|
|
|
|
|
95
|
|
|
|
|
|
|
} |
96
|
|
|
|
|
|
|
|
97
|
352
|
100
|
|
|
|
|
if (_check_utf8) { |
98
|
11
|
100
|
|
|
|
|
if (_frame_count == 0 && frame.opcode() == Opcode::TEXT) _flags.set(RECV_TEXT); |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
99
|
11
|
50
|
|
|
|
|
if (_flags[RECV_TEXT] && !_utf8_checker.write(frame.payload)) return _seterr(errc::invalid_utf8); |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
100
|
10
|
100
|
|
|
|
|
if (frame.final()) { |
101
|
3
|
50
|
|
|
|
|
if (!_utf8_checker.finish()) return _seterr(errc::invalid_utf8); |
|
|
0
|
|
|
|
|
|
102
|
3
|
50
|
|
|
|
|
_flags.reset(RECV_TEXT); |
103
|
|
|
|
|
|
|
} |
104
|
|
|
|
|
|
|
} |
105
|
|
|
|
|
|
|
|
106
|
351
|
100
|
|
|
|
|
if (frame.final()) { |
107
|
204
|
50
|
|
|
|
|
_flags.reset(RECV_FRAME); |
108
|
204
|
50
|
|
|
|
|
_flags.reset(RECV_INFLATE); |
109
|
204
|
|
|
|
|
|
_frame_count = 0; |
110
|
|
|
|
|
|
|
} |
111
|
147
|
|
|
|
|
|
else ++_frame_count; |
112
|
|
|
|
|
|
|
|
113
|
76185
|
|
|
|
|
|
return true; |
114
|
|
|
|
|
|
|
} |
115
|
|
|
|
|
|
|
|
116
|
72491
|
|
|
|
|
|
FrameSP Parser::_get_frame () { |
117
|
72491
|
100
|
|
|
|
|
if (!_flags[ESTABLISHED]) throw Error("not established"); |
118
|
72489
|
100
|
|
|
|
|
if (_flags[RECV_MESSAGE]) throw Error("message is being parsed"); |
119
|
72487
|
100
|
|
|
|
|
if (_flags[RECV_CLOSED]) { _buffer.clear(); return nullptr; } |
120
|
72475
|
100
|
|
|
|
|
if (!_buffer) return nullptr; |
121
|
|
|
|
|
|
|
|
122
|
72409
|
50
|
|
|
|
|
_flags.set(RECV_FRAME); |
123
|
72409
|
100
|
|
|
|
|
if (!_frame) _frame = new Frame(_recv_mask_required, _max_frame_size); |
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
124
|
|
|
|
|
|
|
|
125
|
72409
|
50
|
|
|
|
|
if (!_parse_frame(*_frame)) return nullptr; |
|
|
100
|
|
|
|
|
|
126
|
|
|
|
|
|
|
|
127
|
72604
|
|
|
|
|
|
FrameSP ret = std::move(_frame); |
128
|
117
|
|
|
|
|
|
_frame = nullptr; |
129
|
117
|
|
|
|
|
|
return ret; |
130
|
|
|
|
|
|
|
} |
131
|
|
|
|
|
|
|
|
132
|
3884
|
|
|
|
|
|
MessageSP Parser::_get_message () { |
133
|
3884
|
100
|
|
|
|
|
if (!_flags[ESTABLISHED]) throw Error("not established"); |
134
|
3883
|
100
|
|
|
|
|
if (_flags[RECV_FRAME]) throw Error("frame mode active"); |
135
|
3881
|
100
|
|
|
|
|
if (_flags[RECV_CLOSED]) { _buffer.clear(); return nullptr; } |
136
|
3874
|
100
|
|
|
|
|
if (!_buffer) return nullptr; |
137
|
|
|
|
|
|
|
|
138
|
3696
|
50
|
|
|
|
|
_flags.set(RECV_MESSAGE); |
139
|
3696
|
100
|
|
|
|
|
if (!_message) _message = new Message(_max_message_size); |
|
|
50
|
|
|
|
|
|
|
|
50
|
|
|
|
|
|
140
|
|
|
|
|
|
|
|
141
|
80
|
|
|
|
|
|
while (1) { |
142
|
3776
|
50
|
|
|
|
|
if (!_parse_frame(_message_frame)) return nullptr; |
|
|
100
|
|
|
|
|
|
143
|
|
|
|
|
|
|
|
144
|
|
|
|
|
|
|
// control frame arrived in the middle of fragmented message - wrap in new message and return (state remains MESSAGE) |
145
|
|
|
|
|
|
|
// because user can only switch to getting frames after receiving non-control message |
146
|
348
|
100
|
|
|
|
|
if (!_message_frame.error && _message_frame.is_control() && _message->frame_count) { |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
147
|
5
|
50
|
|
|
|
|
auto cntl_msg = new Message(_max_message_size); |
|
|
50
|
|
|
|
|
|
148
|
5
|
50
|
|
|
|
|
bool done = cntl_msg->add_frame(_message_frame); |
149
|
5
|
50
|
|
|
|
|
assert(done); |
150
|
5
|
|
|
|
|
|
_message_frame.reset(); |
151
|
5
|
|
|
|
|
|
return cntl_msg; |
152
|
|
|
|
|
|
|
} |
153
|
|
|
|
|
|
|
|
154
|
343
|
50
|
|
|
|
|
bool done = _message->add_frame(_message_frame); |
155
|
343
|
|
|
|
|
|
_message_frame.reset(); |
156
|
|
|
|
|
|
|
|
157
|
343
|
100
|
|
|
|
|
if (done) break; |
158
|
136
|
100
|
|
|
|
|
if (!_buffer) return nullptr; |
159
|
|
|
|
|
|
|
} |
160
|
|
|
|
|
|
|
|
161
|
207
|
100
|
|
|
|
|
if (_message->error) { |
162
|
26
|
100
|
|
|
|
|
if (_message->error & errc::max_message_size) _suggested_close_code = CloseCode::MAX_SIZE; |
163
|
|
|
|
|
|
|
} |
164
|
|
|
|
|
|
|
|
165
|
207
|
50
|
|
|
|
|
_flags.reset(RECV_MESSAGE); |
166
|
207
|
50
|
|
|
|
|
_flags.reset(RECV_INFLATE); |
167
|
4088
|
|
|
|
|
|
MessageSP ret = std::move(_message); |
168
|
207
|
|
|
|
|
|
_message = nullptr; |
169
|
207
|
|
|
|
|
|
return ret; |
170
|
|
|
|
|
|
|
} |
171
|
|
|
|
|
|
|
|
172
|
33
|
|
|
|
|
|
FrameHeader Parser::_prepare_control_header (Opcode opcode) { |
173
|
33
|
|
|
|
|
|
_check_send(); |
174
|
33
|
100
|
|
|
|
|
if (opcode == Opcode::CLOSE) { |
175
|
8
|
|
|
|
|
|
_flags.set(SEND_CLOSED); |
176
|
8
|
|
|
|
|
|
_flags.reset(SEND_FRAME); |
177
|
|
|
|
|
|
|
} |
178
|
33
|
100
|
|
|
|
|
return FrameHeader(opcode, true, 0, 0, 0, !_recv_mask_required, _recv_mask_required ? 0 : (uint32_t)std::rand()); |
179
|
|
|
|
|
|
|
} |
180
|
|
|
|
|
|
|
|
181
|
194
|
|
|
|
|
|
FrameHeader Parser::_prepare_frame_header (bool final) { |
182
|
194
|
100
|
|
|
|
|
if (!_flags[SEND_FRAME]) throw Error("can't send frame: message has not been started"); |
183
|
|
|
|
|
|
|
|
184
|
192
|
50
|
|
|
|
|
if (FrameHeader::is_control_opcode(_send_opcode)) { |
185
|
0
|
0
|
|
|
|
|
if (!final) throw Error("control frame must be final"); |
186
|
0
|
|
|
|
|
|
return _prepare_control_header(_send_opcode); |
187
|
|
|
|
|
|
|
} |
188
|
|
|
|
|
|
|
|
189
|
|
|
|
|
|
|
Opcode opcode; |
190
|
|
|
|
|
|
|
bool rsv1; |
191
|
|
|
|
|
|
|
|
192
|
192
|
100
|
|
|
|
|
if (_sent_frame_count) { |
193
|
18
|
|
|
|
|
|
opcode = Opcode::CONTINUE; |
194
|
18
|
|
|
|
|
|
rsv1 = false; |
195
|
|
|
|
|
|
|
} |
196
|
|
|
|
|
|
|
else { |
197
|
174
|
|
|
|
|
|
opcode = _send_opcode; |
198
|
174
|
|
|
|
|
|
rsv1 = _flags[SEND_DEFLATE]; |
199
|
|
|
|
|
|
|
} |
200
|
|
|
|
|
|
|
|
201
|
192
|
100
|
|
|
|
|
if (final) { |
202
|
168
|
|
|
|
|
|
_sent_frame_count = 0; |
203
|
168
|
|
|
|
|
|
_flags.reset(SEND_FRAME); |
204
|
168
|
|
|
|
|
|
_flags.reset(SEND_DEFLATE); |
205
|
|
|
|
|
|
|
} |
206
|
24
|
|
|
|
|
|
else ++_sent_frame_count; |
207
|
|
|
|
|
|
|
|
208
|
192
|
100
|
|
|
|
|
return FrameHeader(opcode, final, rsv1, 0, 0, !_recv_mask_required, _recv_mask_required ? 0 : (uint32_t)std::rand()); |
209
|
|
|
|
|
|
|
} |
210
|
|
|
|
|
|
|
|
211
|
72
|
50
|
|
|
|
|
}}} |
|
|
50
|
|
|
|
|
|