summaryrefslogtreecommitdiff
path: root/src/syncClient.cpp
blob: 889ba0ebf562343b35ee0bf1ed8521fe25a9383e (plain) (blame)
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
/*
 *  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) 2007-2008 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/>.
 */
#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;
	}
}