4 * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
5 * featured implementation uAnytun has no support for multiple connections
6 * or synchronisation. It is a small single threaded implementation intended
7 * to act as a client on small platforms.
8 * The secure anycast tunneling protocol (satp) defines a protocol used
9 * for communication between any combination of unicast and anycast
10 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
11 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
12 * ethernet, ip, arp ...). satp directly includes cryptography and
13 * message authentication based on the methods used by SRTP. It is
14 * intended to deliver a generic, scaleable and secure solution for
15 * tunneling and relaying of packets of any protocol.
18 * Copyright (C) 2007-2014 Christian Pointner <equinox@anytun.org>
20 * This file is part of uAnytun.
22 * uAnytun is free software: you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation, either version 3 of the License, or
27 * uAnytun is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
32 * You should have received a copy of the GNU General Public License
33 * along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
35 * In addition, as a special exception, the copyright holders give
36 * permission to link the code of portions of this program with the
37 * OpenSSL library under certain conditions as described in each
38 * individual source file, and distribute linked combinations
40 * You must obey the GNU General Public License in all respects
41 * for all of the code used other than OpenSSL. If you modify
42 * file(s) with this exception, you may extend this exception to your
43 * version of the file(s), but you are not obligated to do so. If you
44 * do not wish to do so, delete this exception statement from your
45 * version. If you delete this exception statement from all source
46 * files in the program, then also delete it here.
49 #ifndef UANYTUN_udp_h_INCLUDED
50 #define UANYTUN_udp_h_INCLUDED
54 #include <sys/types.h>
55 #include <sys/socket.h>
59 struct sockaddr_storage addr_;
62 struct udp_socket_struct {
65 udp_endpoint_t local_end_;
66 udp_endpoint_t remote_end_;
68 struct udp_socket_struct* next_;
70 typedef struct udp_socket_struct udp_socket_t;
74 udp_socket_t* active_sock_;
76 typedef struct udp_struct udp_t;
78 int udp_init(udp_t* sock, const char* local_addr, const char* port, resolv_addr_type_t resolv_type);
79 int udp_fill_fd_set(udp_t* sock, fd_set* set);
80 int udp_has_remote(udp_t* sock);
81 int udp_resolv_remote(udp_t* sock, const char* remote_addr, const char* port, resolv_addr_type_t resolv_type);
82 void udp_update_remote(udp_t* sock, int fd, udp_endpoint_t* remote);
83 void udp_close(udp_t* sock);
85 char* udp_endpoint_to_string(udp_endpoint_t* e);
87 int udp_read(udp_t* sock, int fd, u_int8_t* buf, u_int32_t len, udp_endpoint_t* remote_end);
88 int udp_write(udp_t* sock, u_int8_t* buf, u_int32_t len);