lsquic_parse_common.c revision c7d81ce1 
1/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc.  See LICENSE. */
2#include <string.h>
3#include <sys/queue.h>
4#include <sys/types.h>
5
6#include "lsquic_types.h"
7#include "lsquic_int_types.h"
8#include "lsquic_packet_common.h"
9#include "lsquic_packet_in.h"
10#include "lsquic_parse_common.h"
11#include "lsquic_parse.h"
12
13
14int
15lsquic_parse_packet_in_begin (lsquic_packet_in_t *packet_in, size_t length,
16                            int is_server, struct packin_parse_state *state)
17{
18    if (length > 0)
19    {
20        switch (packet_in->pi_data[0] & 0xC8)
21        {
22        case 0x88:
23        case 0x80:
24        case 0xC8:
25        case 0xC0:
26            return lsquic_iquic_parse_packet_in_long_begin(packet_in, length,
27                                                            is_server, state);
28        case 0x08:
29            return lsquic_gquic_parse_packet_in_begin(packet_in, length,
30                                                            is_server, state);
31        default:
32            return lsquic_iquic_parse_packet_in_short_begin(packet_in, length,
33                                                            is_server, state);
34        }
35    }
36    else
37        return -1;
38}
39
40
41int
42lsquic_iquic_parse_packet_in_begin (struct lsquic_packet_in *packet_in,
43            size_t length, int is_server, struct packin_parse_state *state)
44{
45    if (length > 0)
46    {
47        if (0 == (packet_in->pi_data[0] & 0x80))
48            return lsquic_iquic_parse_packet_in_short_begin(packet_in, length,
49                                                            is_server, state);
50        else
51            return lsquic_iquic_parse_packet_in_long_begin(packet_in, length,
52                                                            is_server, state);
53    }
54    else
55        return -1;
56}
57
58
59