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
|
/* SPDX-License-Identifier: GPL-2.0 */
#include <unistd.h>
#include "shared/utils.h"
#include "minecctl.h"
#include "server.h"
#include "mc-commands.h"
#include "misc.h"
#include "shared/mc-protocol.h"
bool do_mc_pcount(_unused_ struct cfg *cfg, struct server *server,
unsigned *online, unsigned *max, const char **error)
{
struct saddr *saddr;
char buf[4096];
size_t plen, off;
ssize_t r;
bool rv = false;
int fd;
fd = connect_any(&server->scfg.remotes, &saddr, error);
if (fd < 0)
return false;
if (!mc_protocol_create_status_request(buf, sizeof(buf), &plen,
saddr)) {
*error = "failed to create request";
goto out;
}
/* FIXME: do proper checks for EINTR etc */
off = 0;
while (off < plen) {
r = write(fd, buf + off, plen - off);
if (r <= 0) {
*error = "write failed";
goto out;
}
off += r;
}
off = 0;
while (off < sizeof(buf)) {
r = read(fd, buf + off, sizeof(buf) - off);
if (r <= 0) {
*error = "read failed";
goto out;
}
off += r;
if (mc_is_handshake_complete(buf, off))
break;
}
if (!mc_protocol_parse_status_reply(buf, off, online, max)) {
*error = "failed to get player count";
goto out;
}
rv = true;
out:
close(fd);
return rv;
}
|
