1 // Copyright (2013) Jann Horn <jann@thejh.net>
2 // This code is licensed under the AGPLv3.
9 #include <sys/socket.h>
10 #include <netinet/in.h>
11 #include <arpa/inet.h>
13 extern char *rcon_host, *rcon_port, *rcon_pass, *map;
15 void senderr(char *errmsg, bool myfault) {
17 puts("Status: 500 CGI error");
19 puts("Status: 400 CGI error");
21 puts("Content-Type: text/plain;charset=utf8");
22 puts("X-Frame-Options: DENY");
24 puts("An error occured while processing your request:");
29 struct inifile *get_config(void) {
30 static struct inifile *res = NULL;
31 if (!res) res = slurp_inifile(CONFIG_PATH);
34 senderr("can't fetch config", true);
39 char *getcval(char *key) {
40 char *r = inifile_lookup(get_config(), key);
43 senderr("config value missing", true);
48 void rcon_send(char *data) {
50 char *host = getcval("rcon_host");
51 char *port = getcval("rcon_port");
52 char *pass = getcval("rcon_pass");
55 size_t pass_len = strlen(pass);
56 size_t data_len = strlen(data);
57 size_t packet_len = 4+4+1+pass_len+1+data_len +1;
60 memcpy(p, "\xff\xff\xff\xffrcon ", 9); p += 9;
61 memcpy(p, pass, pass_len); p += pass_len;
63 memcpy(p, data, data_len); p += data_len;
67 int fd = socket(AF_INET, SOCK_DGRAM, 0);
68 if (fd == -1) senderr("can't create UDP socket", true);
69 struct sockaddr_in addr;
70 bzero(&addr, sizeof(addr));
71 addr.sin_family = AF_INET;
72 addr.sin_port = htons(atoi(port));
73 if (!inet_aton(host, &addr.sin_addr)) senderr("bad ipv4 addr in config", true);
74 if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)))
75 senderr("can't connect UDP socket", true);
78 if (write(fd, buf, packet_len) != packet_len)
79 senderr("incomplete packet sent or write error", true);