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/*
* src/main.c
* (c) 2020 Jonas Gunz <himself@jonasgunz.de>
* License: MIT
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include "rcon.h"
typedef struct program_params_s {
char* host;
char* port;
char* password;
char* command;
} program_params_t;
program_params_t parse_args ( int argc, char* argv[] );
int connect_socket ( char* _host, char* _port );
void print_help ( char* _progname );
int main( int argc, char* argv[] ) {
program_params_t args = parse_args( argc, argv );
int sock = connect_socket ( args.host, args.port );
fprintf ( stderr, "Connection successful.\n" );
if ( rcon_login ( sock, args.password ) ) {
fprintf ( stderr, "Authentification failed.\n" );
exit ( EXIT_FAILURE );
}
char* result = NULL;
rcon_command ( &result, sock, args.command );
printf("%s\n", result);
close (sock);
return 0;
}
program_params_t parse_args ( int argc, char* argv[] ) {
program_params_t ret;
memset(&ret, 0, sizeof ret);
if ( argc < 5 )
print_help ( argv[0] );
ret.host = argv[1];
ret.port = argv[2];
ret.password = argv[3];
unsigned int len = 0;
for ( int i = 4; i < argc; i++ ) {
len += strlen ( argv[i] ) + 1;
}
ret.command = malloc ( len + 1);
ret.command[len] = 0;
unsigned int cnt = 0;
for ( int i = 4; i < argc; i++ ) {
int arglen = strlen(argv[i]) + 1;
memcpy ( ret.command + cnt, argv[i], arglen);
(ret.command + cnt)[arglen - 1] = ' ';
cnt += arglen;
}
ret.command[len-1] = 0; // Hacky AF
return ret;
}
int connect_socket ( char* _host, char* _port ) {
int sock = -1;
int ret = 0;
struct addrinfo hints, *result, *iter;
memset ( &hints, 0, sizeof( struct addrinfo ) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
ret = getaddrinfo ( _host, _port, &hints, &result );
if ( ret ) {
fprintf ( stderr, "getaddrinfo: %s\n", gai_strerror(ret) );
exit ( EXIT_FAILURE );
}
for ( iter = result; iter != NULL; iter = iter->ai_next ) {
sock = socket( result->ai_family, result->ai_socktype, result->ai_protocol );
if ( sock < 0 )
continue;
if ( connect ( sock, iter->ai_addr, iter->ai_addrlen ) != -1 )
break;
close (sock);
}
if ( ! iter ) {
fprintf ( stderr, "Connection failed.\n" );
exit ( EXIT_FAILURE );
}
return sock;
}
void print_help ( char* _progname ) {
printf(
"Minecraft RCON client\n"
"Usage:\n"
" %s HOST PORT PASSWORD COMMAND",
_progname
);
}
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