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
|
/*
kHTTPd -- the next generation
Basic socket functions
*/
/****************************************************************
* 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 2, 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
****************************************************************/
#include "prototypes.h"
#include <linux/kernel.h>
#include <linux/net.h>
#include <linux/version.h>
#include <linux/smp_lock.h>
#include <net/sock.h>
/*
MainSocket is shared by all threads, therefore it has to be
a global variable.
*/
struct socket *MainSocket=NULL;
int StartListening(const int Port)
{
struct socket *sock;
struct sockaddr_in sin;
int error;
EnterFunction("StartListening");
/* First create a socket */
error = sock_create(PF_INET,SOCK_STREAM,IPPROTO_TCP,&sock);
if (error<0)
(void)printk(KERN_ERR "Error during creation of socket; terminating\n");
/* Now bind the socket */
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons((unsigned short)Port);
error = sock->ops->bind(sock,(struct sockaddr*)&sin,sizeof(sin));
if (error<0)
{
(void)printk(KERN_ERR "kHTTPd: Error binding socket. This means that some other \n");
(void)printk(KERN_ERR " daemon is (or was a short time ago) using port %i.\n",Port);
return 0;
}
/* Grrr... setsockopt() does this. */
sock->sk->reuse = 1;
/* Now, start listening on the socket */
/* I have no idea what a sane backlog-value is. 48 works so far. */
error=sock->ops->listen(sock,48);
if (error!=0)
(void)printk(KERN_ERR "kHTTPd: Error listening on socket \n");
MainSocket = sock;
EnterFunction("StartListening");
return 1;
}
void StopListening(void)
{
struct socket *sock;
EnterFunction("StopListening");
if (MainSocket==NULL) return;
sock=MainSocket;
MainSocket = NULL;
sock_release(sock);
LeaveFunction("StopListening");
}
|
