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
|
/*
* Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
*
* This 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.
*
* This software 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 software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
/*
* listen.c - listen for incoming connections
*/
#define _BSD_SOURCE
#include <unistd.h>
#include <sys/types.h>
#ifdef __MINGW32__
#include <winsock2.h>
#else
#include <sys/wait.h>
#include <sys/utsname.h>
#endif
#include <sys/time.h>
#include <rfb/rfbclient.h>
/*
* listenForIncomingConnections() - listen for incoming connections from
* servers, and fork a new process to deal with each connection.
*/
void
listenForIncomingConnections(rfbClient* client)
{
#ifdef __MINGW32__
/* FIXME */
rfbClientErr("listenForIncomingConnections on MinGW32 NOT IMPLEMENTED\n");
return;
#else
int listenSocket;
fd_set fds;
client->listenSpecified = TRUE;
listenSocket = ListenAtTcpPort(client->listenPort);
if ((listenSocket < 0))
return;
rfbClientLog("%s -listen: Listening on port %d\n",
client->programName,client->listenPort);
rfbClientLog("%s -listen: Command line errors are not reported until "
"a connection comes in.\n", client->programName);
while (TRUE) {
/* reap any zombies */
int status, pid;
while ((pid= wait3(&status, WNOHANG, (struct rusage *)0))>0);
/* TODO: callback for discard any events (like X11 events) */
FD_ZERO(&fds);
FD_SET(listenSocket, &fds);
select(FD_SETSIZE, &fds, NULL, NULL, NULL);
if (FD_ISSET(listenSocket, &fds)) {
client->sock = AcceptTcpConnection(listenSocket);
if (client->sock < 0)
return;
if (!SetNonBlocking(client->sock))
return;
/* Now fork off a new process to deal with it... */
switch (fork()) {
case -1:
rfbClientErr("fork\n");
return;
case 0:
/* child - return to caller */
close(listenSocket);
return;
default:
/* parent - go round and listen again */
close(client->sock);
break;
}
}
}
#endif
}
|
