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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* 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 methods 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) 2007-2014 Markus Grüneis, 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/>.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#include <sstream>
#include <iostream>
#include <string>
#include "connectionList.h"
#include "syncCommand.h"
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include "log.h"
#include "syncClient.h"
#include "syncTcpConnection.h"
#include "buffer.h"
#include <boost/array.hpp>
SyncClient::SyncClient(std::string hostname,std::string port)
:hostname_(hostname),port_(port)
{
}
void SyncClient::run()
{
bool connected(false);
for(;;) {
try {
boost::asio::io_service io_service;
SyncTcpConnection::proto::resolver resolver(io_service);
SyncTcpConnection::proto::resolver::query query(hostname_, port_);
SyncTcpConnection::proto::resolver::iterator endpoint_iterator = resolver.resolve(query);
SyncTcpConnection::proto::resolver::iterator end;
SyncTcpConnection::proto::socket socket(io_service);
boost::system::error_code error = boost::asio::error::host_not_found;
while(error && endpoint_iterator != end) {
socket.close();
socket.connect(*endpoint_iterator++, error);
}
if(error) {
throw boost::system::system_error(error);
}
if(!connected) {
cLog.msg(Log::PRIO_NOTICE) << "sync: connected to " << hostname_ <<":"<< port_;
}
connected=true;
readAndProcess(socket); //endless loop
} catch(std::exception& e) {
if(connected) {
cLog.msg(Log::PRIO_NOTICE) << "sync: connection to " << hostname_ <<":"<< port_<< " lost ("<< e.what() << ") retrying every 10sec";
}
connected=false;
boost::this_thread::sleep(boost::posix_time::milliseconds(10000));
}
}
}
void SyncClient::readAndProcess(SyncTcpConnection::proto::socket& socket)
{
ConnectionList& cl_(gConnectionList);
size_t message_lenght ;
for(;;) {
std::stringstream message_lenght_stream;
readExactly(socket,5,message_lenght_stream);
message_lenght_stream >> message_lenght;
std::stringstream void_stream;
readExactly(socket,1,void_stream); //skip space
std::stringstream sync_command_stream;
readExactly(socket,message_lenght, sync_command_stream);
//cLog.msg(Log::PRIO_NOTICE) << "recieved sync inforamtaion "<<tmp.str()<< std::endl;
boost::archive::text_iarchive ia(sync_command_stream);
SyncCommand scom(cl_);
ia >> scom;
}
}
void SyncClient::readExactly(SyncTcpConnection::proto::socket& socket,size_t toread, std::iostream& result)
{
size_t hasread = 0;
while(toread > hasread) {
//TODO read bigger buffers
boost::array<char, 1> buf;
boost::system::error_code error;
size_t len = socket.read_some(boost::asio::buffer(buf), error);
if(error == boost::asio::error::eof) {
break; // Connection closed cleanly by peer.
} else if(error) {
throw boost::system::system_error(error); // Some other error.
}
//for (size_t pos=0; pos<len; pos++)
result<<buf[0];
hasread+=len;
}
}
|
