lsquic_parse_common.c revision 229fce07 
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] & 0x88)
21        {
22        case 0x88:
23        case 0x80:
24            return lsquic_iquic_parse_packet_in_long_begin(packet_in, length,
25                                                            is_server, state);
26        case 0x08:
27            return lsquic_gquic_parse_packet_in_begin(packet_in, length,
28                                                            is_server, state);
29        default:
30            return lsquic_iquic_parse_packet_in_short_begin(packet_in, length,
31                                                            is_server, state);
32        }
33    }
34    else
35        return -1;
36}
37
38
39int
40lsquic_iquic_parse_packet_in_begin (struct lsquic_packet_in *packet_in,
41            size_t length, int is_server, struct packin_parse_state *state)
42{
43    if (length > 0)
44    {
45        if (0 == (packet_in->pi_data[0] & 0x80))
46            return lsquic_iquic_parse_packet_in_short_begin(packet_in, length,
47                                                            is_server, state);
48        else
49            return lsquic_iquic_parse_packet_in_long_begin(packet_in, length,
50                                                            is_server, state);
51    }
52    else
53        return -1;
54}
55
56
57