111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/***************************************************************************
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* Copyright (C) 03/2005 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <inttypes.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "netpkt.h"
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#include "plugin.h"
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#include "plugin_helper.h"
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#include "logging.h"
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#include "scanner.h"
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struct game_entry {
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uint16_t gameid;
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uint32_t ip;
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uint16_t port1;
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uint16_t port2;
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} __attribute__ ((packed));
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struct master_entry {
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struct list_head list;
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struct sockaddr_in addr;
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};
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static LIST_HEAD(master_list);
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static char scanmsg[] = "\xff\xff\xff\xffHLSWLANSEARCH";
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static int scan(void)
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{
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struct master_entry *entry;
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list_for_each_entry(entry, &master_list, list)
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pkt_send(&entry->addr.sin_addr, ntohs(entry->addr.sin_port), scanmsg, sizeof(scanmsg));
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return 1;
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}
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static int parse(struct net_pkt *pkt)
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{
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// TODO: check against master_list
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if (pkt_getport(pkt) != 7140)
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return PARSE_REJECT;
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struct game_entry *game = (void *)pkt->buf + sizeof(scanmsg);
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while ((void *)game < ((void *)pkt->buf + pkt->size)) {
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server_add(game->gameid, game->ip, game->port1, game->port2);
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game++;
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}
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return PARSE_ACCEPT;
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}
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static int init_callback(const char *value, void *privdata)
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{
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struct master_entry *entry = malloc(sizeof(struct master_entry));
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if (entry == NULL) {
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log_print(LOG_ERROR, "hlswproxy_init(): out of memory");
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return -1;
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}
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if (parse_saddr(value, &entry->addr) != 0) {
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log_print(LOG_WARN, " invalid dst: %s", value);
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free(entry);
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return -1;
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}
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log_print(LOG_INFO, " adding remote master %s:%d",
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inet_ntoa(entry->addr.sin_addr), ntohs(entry->addr.sin_port));
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list_add(&entry->list, &master_list);
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return 0;
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}
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static int init(void)
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{
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if (config_get_strings("hlswproxy", "scan", init_callback, NULL) <= 0)
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return -1;
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return 0;
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}
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struct hlswmaster_plugin plugin = {
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.name = "hlswproxy",
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.scan = &scan,
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.parse = &parse,
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.init = &init,
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};
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