91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/***************************************************************************
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* Copyright (C) 04/2006 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 <string.h>
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#include "mod_halflife.h"
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#include "modhelper.h"
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static struct game_ports port_arr[] = {
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{ 27015, 27024, ID_HL },
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{ 0,0,0 }
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};
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static const char scanmsg1[] = "\xff\xff\xff\xff""details";
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static const char scanmsg2[] = "\xff\xff\xff\xff\x54";
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static const char scanmsg3[] = "\xff\xff\xff\xff""TSource Engine Query";
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static const char reply1[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x49, 0x07 }; // I.
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static const char reply2[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x6D, 0x00 }; // m
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void ModHalfLife::scan(MultiSock* msock)
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{
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ModHelper::send(msock, port_arr, scanmsg1, strlen(scanmsg1));
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ModHelper::send(msock, port_arr, scanmsg2, strlen(scanmsg2));
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ModHelper::send(msock, port_arr, scanmsg3, strlen(scanmsg3));
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}
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int ModHalfLife::parse(NetPkt* pkt, GameList* glist)
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{
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struct in_addr tmp;
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int port, count, pos;
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if (ModHelper::checkPorts(pkt, port_arr) == 0)
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return PARSE_REJECT;
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// eat weird connection attempts
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if (pkt->getSize() <= 4)
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return PARSE_ACCEPT_QUIRK;
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/* Halflife2 answer */
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if (pkt->compare(0, reply1, sizeof(reply1))) {
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glist->addGame(ID_HL2, pkt);
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return PARSE_ACCEPT;
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}
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/* Halflife1 short answer */
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if (pkt->compare(0, reply2, sizeof(reply2))) {
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glist->addGame(ID_HL, pkt);
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return PARSE_ACCEPT;
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}
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/* Halflife1 answer (with IP:port) */
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if (!pkt->compare(0, reply2, sizeof(reply2) -1))
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return PARSE_REJECT;
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/* try to parse server IP */
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pos = 5;
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if ((count = pkt->parse_ip(pos, &tmp)) < 7)
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return PARSE_REJECT;
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/* parse server port */
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pos += count +1;
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if ((count = pkt->parse_int(pos, &port)) == 0)
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return PARSE_REJECT;
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// IP is 0.0.0.0 or 127.0.0.1 -> do not use IP info
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if (tmp.s_addr == 0x00000000 || tmp.s_addr == 0x0100007F) {
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glist->addGame(ID_HL, pkt);
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} else {
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glist->addGame(ID_HL, &tmp, port);
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}
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return PARSE_ACCEPT;
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}
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