139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
/***************************************************************************
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* Copyright (C) 11/2006 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 <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include "configfile.h"
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#include "list.h"
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#include "event.h"
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#include "scanner.h"
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#include "logging.h"
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#include "netpkt.h"
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#include "gamelist.h"
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#define HLSW_HEADER "\xFF\xFF\xFF\xFFHLSWLANSEARCH\x00"
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#define HLSW_HEADER_LEN 0x12
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#define HLSW_ENTRY_LEN 10
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#define MAX_PKT_LEN (HLSW_HEADER_LEN + HLSW_ENTRY_LEN * 140)
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static LIST_HEAD(master_pkt_list);
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static int serverlist_add_game(struct game_entry *entry)
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{
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int found = 0;
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struct net_pkt *pkt;
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list_for_each_entry(pkt, &master_pkt_list, list) {
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if (pkt->size <= (MAX_PKT_LEN - HLSW_ENTRY_LEN)) {
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found = 1;
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break;
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}
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}
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if (!found) {
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pkt = malloc(sizeof(struct net_pkt) + MAX_PKT_LEN);
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if (pkt == NULL) {
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log_print(LOG_WARN, "serverlist_add_game(): out of memory");
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return -1;
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}
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memcpy(pkt->buf, HLSW_HEADER, HLSW_HEADER_LEN);
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pkt->size = HLSW_HEADER_LEN;
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list_add(&pkt->list, &master_pkt_list);
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}
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memcpy((void *)&pkt->buf + pkt->size, &entry->gameid, HLSW_ENTRY_LEN);
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pkt->size += HLSW_ENTRY_LEN;
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return 0;
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}
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static int serverlist_refresh(void *privdata)
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{
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int timeout = (int)privdata;
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struct net_pkt *pkt, *tmp;
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list_for_each_entry_safe(pkt, tmp, &master_pkt_list, list) {
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list_del(&pkt->list);
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free(pkt);
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}
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gamelist_gc_and_dump(serverlist_add_game, timeout);
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return 0;
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}
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static int server_handler(int fd, void *privdata)
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{
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struct sockaddr_in client;
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unsigned char buf[32];
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int i = sizeof(client);
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int ret = recvfrom(fd, buf, sizeof(buf), 0, (struct sockaddr *)&client, &i);
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if (ret <= 0) {
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log_print(LOG_WARN, "server_handler(): recvfrom()");
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return 0;
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}
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if (memcmp(buf, HLSW_HEADER, HLSW_HEADER_LEN))
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return 0;
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struct net_pkt *pkt;
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list_for_each_entry(pkt, &master_pkt_list, list)
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sendto(fd, pkt->buf, pkt->size, 0, (struct sockaddr *)&client, sizeof(client));
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return 0;
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}
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int server_init()
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{
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int sock = socket(PF_INET, SOCK_DGRAM, 0);
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if (sock < 0) {
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log_print(LOG_ERROR, "server_init(): socket()");
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return -1;
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}
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struct sockaddr_in src;
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char *addr = config_get_string("global", "master_src", "0.0.0.0:7140");
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if (parse_saddr(addr, &src) != 0) {
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log_print(LOG_ERROR, "server_init(): invalid master_src '%s'", addr);
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return -1;
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}
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if (bind(sock, (struct sockaddr *)&src, sizeof(src)) < 0) {
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log_print(LOG_ERROR, "server_init(): bind()");
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return -1;
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}
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event_add_readfd(sock, server_handler, NULL);
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struct timeval tv;
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tv.tv_sec = config_get_int("global", "serverlist_refresh", 5);
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tv.tv_usec = 0;
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int timeout = config_get_int("global", "serverlist_timeout", 180);
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event_add_timeout(&tv, serverlist_refresh, (void *)timeout);
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return 0;
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}
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