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
|
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
int main(int argc, char *argv[]) {
if (argc != 2) {
fprintf(stderr, "Usage: %s <socket>\n", argv[0]);
return 1;
}
size_t addrlen = strlen(argv[1]);
/* Allocate enough space for arbitrary-length paths */
char addrbuf[offsetof(struct sockaddr_un, sun_path) + addrlen + 1];
memset(addrbuf, 0, sizeof(addrbuf));
struct sockaddr_un *addr = (struct sockaddr_un *)addrbuf;
addr->sun_family = AF_UNIX;
memcpy(addr->sun_path, argv[1], addrlen+1);
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
fprintf(stderr, "Failed to create socket: %s\n", strerror(errno));
return 1;
}
if (connect(fd, (struct sockaddr*)addr, sizeof(addrbuf)) < 0) {
fprintf(stderr, "Can't connect to `%s': %s\n", argv[1], strerror(errno));
return 1;
}
char buf[1024];
ssize_t r;
while (1) {
r = recv(fd, buf, sizeof(buf), 0);
if (r < 0) {
fprintf(stderr, "read: %s\n", strerror(errno));
return 1;
}
if (r == 0)
return 0;
fwrite(buf, r, 1, stdout);
}
}
|
