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
|
/* sockopen.c -- Function to open a socket
* $id$
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <syslog.h>
int sockopen_unix(const char *fname)
{
int sock;
struct sockaddr_un addr;
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock == -1)
{
return -1;
}
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, fname, sizeof(addr.sun_path));
if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
close(sock);
return -1;
}
if (listen(sock, 512) == -1)
{
close(sock);
return -1;
}
return sock;
}
int sockopen_tcp(const char *name)
{
int port;
int sock = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in serv_addr;
const char *p;
p = strchr(name, ':');
if (!p)
{
fprintf(stderr, "Argh! Internal error!\n");
exit(1);
}
port = atoi(p + 1);
memset(&serv_addr, 0, sizeof(struct sockaddr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(port);
if (bind(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
{
fprintf(stderr, "Error in binding to port %d.\n", port);
exit(1);
}
if (listen(sock, 5) == -1)
{
perror("listen");
exit(1);
}
return sock;
}
int sockopen(const char *name)
{
if (!name) return -1;
if (strchr(name, ':')) return sockopen_tcp(name);
else return sockopen_unix(name);
}
|
