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
|
/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun 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
* any later version.
*
* Anytun 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 anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ANYTUN_packetSource_h_INCLUDED
#define ANYTUN_packetSource_h_INCLUDED
#include <boost/asio.hpp>
#include <boost/thread.hpp>
#include <list>
#include <queue>
#include "datatypes.h"
#include "threadUtils.hpp"
// TODO: fix this when other packetSource types are introduced
typedef boost::asio::ip::udp::endpoint PacketSourceEndpoint;
typedef boost::asio::ip::udp::resolver::iterator PacketSourceResolverIt;
class PacketSource
{
public:
virtual ~PacketSource() {}
virtual u_int32_t recv(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint& remote) = 0;
virtual void send(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint remote) = 0;
void waitUntilReady();
protected:
Semaphore ready_sem_;
};
class UDPPacketSource : public PacketSource
{
public:
typedef boost::asio::ip::udp proto;
UDPPacketSource(std::string localaddr, std::string port);
~UDPPacketSource();
u_int32_t recv(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint& remote);
void send(u_int8_t* buf, u_int32_t len, PacketSourceEndpoint remote);
void onResolve(PacketSourceResolverIt& it);
void onError(const std::runtime_error& e);
private:
boost::asio::io_service io_service_;
typedef struct {
u_int8_t* buf_;
u_int32_t len_;
proto::socket* sock_;
Semaphore* sem_;
} SocketsElement;
std::list<SocketsElement> sockets_;
void recv_thread(std::list<SocketsElement>::iterator it);
typedef struct {
u_int32_t len_;
PacketSourceEndpoint remote_;
std::list<SocketsElement>::iterator it_;
} ThreadResult;
std::queue<ThreadResult> thread_result_queue_;
Mutex thread_result_mutex_;
Semaphore thread_result_sem_;
};
#endif
|
