1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (C) 2013-2024 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef WEECHAT_PLUGIN_RELAY_WEBSOCKET_H
#define WEECHAT_PLUGIN_RELAY_WEBSOCKET_H
#include "relay.h"
#include <zlib.h>
#define WEBSOCKET_FRAME_OPCODE_CONTINUATION 0x00
#define WEBSOCKET_FRAME_OPCODE_TEXT 0x01
#define WEBSOCKET_FRAME_OPCODE_BINARY 0x02
#define WEBSOCKET_FRAME_OPCODE_CLOSE 0x08
#define WEBSOCKET_FRAME_OPCODE_PING 0x09
#define WEBSOCKET_FRAME_OPCODE_PONG 0x0A
struct t_relay_client;
struct t_relay_http_request;
struct t_relay_websocket_deflate
{
int enabled; /* 1 if permessage-deflate is enabled*/
int server_context_takeover; /* context takeover for server */
int client_context_takeover; /* context takeover for client */
int window_bits_deflate; /* window bits for server (comp.) */
/* ("server_max_window_bits") */
int window_bits_inflate; /* window bits for client (decomp.) */
/* ("client_max_window_bits") */
z_stream *strm_deflate; /* stream for deflate (compression) */
z_stream *strm_inflate; /* stream for inflate (decompression)*/
};
struct t_relay_websocket_frame
{
int opcode; /* frame opcode */
int payload_size; /* size of payload */
char *payload; /* payload */
};
extern struct t_relay_websocket_deflate *relay_websocket_deflate_alloc ();
extern int relay_websocket_deflate_init_stream_deflate (struct t_relay_websocket_deflate *ws_deflate);
extern int relay_websocket_deflate_init_stream_inflate (struct t_relay_websocket_deflate *ws_deflate);
extern void relay_websocket_deflate_free (struct t_relay_websocket_deflate *ws_deflate);
extern int relay_websocket_is_valid_http_get (enum t_relay_protocol protocol,
const char *message);
extern int relay_websocket_client_handshake_valid (struct t_relay_http_request *request);
extern void relay_websocket_parse_extensions (const char *extensions,
struct t_relay_websocket_deflate *ws_deflate);
extern char *relay_websocket_build_handshake (struct t_relay_http_request *request);
extern int relay_websocket_decode_frame (struct t_relay_client *client,
const unsigned char *buffer,
unsigned long long length,
struct t_relay_websocket_frame **frames,
int *num_frames);
extern char *relay_websocket_encode_frame (struct t_relay_client *client,
int opcode,
const char *payload,
unsigned long long payload_size,
unsigned long long *length_frame);
extern void relay_websocket_deflate_print_log (struct t_relay_websocket_deflate *ws_deflate,
const char *prefix);
#endif /* WEECHAT_PLUGIN_RELAY_WEBSOCKET_H */
|
