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
|
/*
* ClientConnection.cpp
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* 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 3 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ClientConnection.h"
#include "IPAddress.h"
#include <cstring>
#include <errno.h>
#include <sys/socket.h>
namespace Mad {
namespace Net {
void ClientConnection::connect(const IPAddress &address) throw(ConnectionException) {
const int kx_list[] = {GNUTLS_KX_ANON_DH, 0};
if(connected)
disconnect();
peer = new IPAddress(address);
sock = socket(PF_INET, SOCK_STREAM, 0);
if(sock < 0)
throw ConnectionException("socket()", std::strerror(errno));
if(::connect(sock, peer->getSockAddr(), peer->getSockAddrLength()) < 0)
throw ConnectionException("connect()", std::strerror(errno));
gnutls_anon_allocate_client_credentials(&anoncred);
gnutls_init(&session, GNUTLS_CLIENT);
gnutls_set_default_priority(session);
gnutls_kx_set_priority(session, kx_list);
gnutls_credentials_set(session, GNUTLS_CRD_ANON, anoncred);
gnutls_transport_set_ptr(session, reinterpret_cast<gnutls_transport_ptr_t>(sock));
int ret = gnutls_handshake(session);
if(ret < 0)
throw ConnectionException("gnutls_handshake()", gnutls_strerror(ret));
connected = true;
}
void ClientConnection::disconnect() {
gnutls_bye(session, GNUTLS_SHUT_RDWR);
if(sock >= 0) {
shutdown(sock, SHUT_RDWR); /* no more receptions */
close(sock);
sock = -1;
}
gnutls_deinit(session);
gnutls_anon_free_client_credentials(anoncred);
if(peer) {
delete peer;
peer = 0;
}
connected = false;
}
}
}
|
