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
|
#include <string.h>
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include "mctypes.h"
int main(int argc, char *argv[])
{
char *port_s, *address = argv[1];
unsigned short port;
int protocol_ver;
int p_flag = 0;
if (argc == 1) {
printf("Usage: mcping [ADDRESS[:PORT]]\nPings a Minecraft server using the PING protocol.\n");
exit(EXIT_SUCCESS);
}
int opt;
while ((opt = getopt(argc, argv, "hp:")) != -1) {
switch (opt) {
case 'h':
exit(EXIT_SUCCESS);
case 'p':
protocol_ver = atoi(optarg);
p_flag = 1;
break;
default:
break;
}
}
if((port_s = strchr(address, ':')) != NULL) {
address[strlen(address)-strlen(port_s)] = '\0';
port_s++;
} else
port_s = "25565";
if(p_flag == 0) {
protocol_ver = 756;
}
port = atoi(port_s);
int s;
if((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
perror("bad socket\n");
struct addrinfo *mc_info = malloc(sizeof(struct addrinfo));
memset(mc_info, 0, sizeof(struct addrinfo));
struct addrinfo hints;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
if(getaddrinfo(address, "80", &hints, &mc_info) != 0)
perror("bad addrinfo\n");
struct sockaddr_in mc_sock;
mc_sock.sin_family = AF_INET;
mc_sock.sin_port = htons(port);
memcpy(&mc_sock.sin_addr, mc_info->ai_addr->sa_data+2, mc_info->ai_addrlen); // stupidity
if(connect(s, (struct sockaddr *)&mc_sock, sizeof(mc_sock)) < 0)
perror("connection failed\n");
handshake hs = {
writeVarInt(protocol_ver),
writeVarInt(strlen(address)),
address,
port,
writeVarInt(1)
};
// printf("%02X\n", );
return 0;
}
|
