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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/**
* @file packet.h
*
* @brief UDP-Packet, contains data, sender and receiver.
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*/
#ifndef PACKET_H_
#define PACKET_H_
#include "types.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
/**
* @brief UDP-Packet, contains data, sender and receiver
*/
typedef struct packet_s packet_t;
struct packet_s {
/**
* Address family, such as AF_INET
*/
int family;
/**
*
*/
size_t sockaddr_len;
/**
* source address structure
*/
struct sockaddr source;
/**
* destination address structure
*/
struct sockaddr destination;
/**
* message data
*/
chunk_t data;
/**
* @brief set destination of packet, using address string
*
* @param packet calling object
* @param address ip address string
* @param port port number
* @return - SUCCESS
* - NOT_SUPPORTED
*/
status_t (*set_destination) (packet_t *packet, char *address, u_int16_t port);
/**
* @brief set destination of packet, using address string
*
* @param packet calling object
* @param address ip address string
* @param port port number
* @return - SUCCESS
* - NOT_SUPPORTED
*/
status_t (*set_source) (packet_t *packet, char *address, u_int16_t port);
/**
* @brief Clones a packet_t object
*
* @param packet calling object
* @param clone pointer to a packet_t object pointer where the new object is stored
* @return - SUCCESS if successful
* - OUT_OF_RES
*/
status_t (*clone) (packet_t *packet, packet_t **clone);
/**
* @brief destroy the packet, freeing contained data
*
* @param packet packet to destroy
* @return - SUCCESS
*/
status_t (*destroy) (packet_t *packet);
};
/**
* @brief create an empty packet
*
* @param family address-family, such as AF_INET
* @return - NULL when family not supported
*/
packet_t *packet_create(int family);
#endif /*PACKET_H_*/
|
