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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* socket.cc
*
* Mon Nov 8 10:49:33 CET 2004
* Copyright 2004 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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 2 of the License, or
* (at your option) any later version.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "socket.h"
#include <errno.h>
// for gethostbyname
#include <netdb.h>
#include <hugin.hpp>
Socket::Socket()
{
connected = false;
err = 0;
}
Socket::Socket(u_short port)
{
connected = false;
err = 0;
// create socket
ssocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
// PF_INET: ipv4, PF_INET6: ipv6
// tcp: IPPROTO_TCP
// upd: IPPROTO_UDP
if (ssocket < 0) {
err = 1;
ERR(socket, "Socket: socket() failed!");
}
memset((char *) &socketaddr, 0, sizeof(socketaddr));
socketaddr.sin_family = AF_INET; // Use "internet protocol" IP
socketaddr.sin_port = htons(port); // connect to that port
socketaddr.sin_addr.s_addr = INADDR_ANY;
// INADDR_ANY puts your IP address automatically
}
Socket::~Socket()
{
// if(err) perror("Socket: No socket to kill");
// printf("Socket: I'm melting...[%d]\n", ssocket);
if(ssocket >= 0) close(ssocket); // close server socket
}
Socket Socket::slisten()
{
Socket s = Socket();
if(err) {
ERR(socket, "Socket: No socket present!");
return s;
}
if(!connected) {
// bind socket to address specified by "sa" parameter
err = bind(ssocket, (struct sockaddr*)&socketaddr, sizeof(socketaddr));
if (err) {
ERR(socket, "Socket: bind() failed! %s", strerror(errno));
return s;
}
// start listen for connection - kernel will accept connection
// requests (max 5 in queue)
err = listen(ssocket, 5);
if(err) {
ERR(socket, "Socket: listen() failed! %s", strerror(errno));
return s;
}
}
// accept new connection and get its connection descriptor
int csalen = sizeof(s.socketaddr);
s.ssocket = accept(ssocket,
(struct sockaddr*)&s.socketaddr,
(socklen_t*)&csalen);
if (s.ssocket < 0) {
s.connected = false;
err = 1;
ERR(socket, "Socket: accept() failed! %s", strerror(errno));
return s;
}
connected = true;
s.connected = true;
return s;
}
int Socket::sconnect(char *addr)
{
if(err) {
connected = false;
ERR(socket, "Socket: No socket present!");
return err;
}
// Do DNS lookup
char *ip;
struct in_addr **addr_list;
struct hostent *he;
he = gethostbyname(addr);
if(!he || !he->h_length) {
/*
throw TCPConnectException(addr, toString(port),
std::string("host lookup failed: ") + hstrerror(h_errno));
*/
}
addr_list = (struct in_addr **)he->h_addr_list;
// Get first value. We know for sure that there are at least one.
ip = inet_ntoa(*addr_list[0]);
socketaddr.sin_addr.s_addr = inet_addr(ip);
err = connect(ssocket, (struct sockaddr*)&socketaddr, sizeof(socketaddr));
if (err) {
connected = false;
ERR(socket, "Socket: connect() failed! %s", strerror(errno));
return err;
}
// fprintf(stderr, "Socket connected\n");
connected = true;
return 0;
}
bool Socket::isConnected()
{
return connected;
}
bool Socket::hasError()
{
return err != 0;
}
|