87 lines
2.8 KiB
C++
87 lines
2.8 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 "gameentry.h"
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#include <stdio.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include "gameentry.h"
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GameEntry::GameEntry(int gameid, struct in_addr *addr, int port1, int port2)
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: port1(port1), port2(port2), gameid(gameid)
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{
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memcpy(&this->addr, addr, sizeof(this->addr));
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if (port2 != 0) {
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this->port2 = this->port1;
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this->port1 = port2;
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}
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update();
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}
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int GameEntry::compare(const GameEntry* ge)
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{
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if (this->addr.s_addr > ge->addr.s_addr)
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return -1;
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if (this->addr.s_addr < ge->addr.s_addr)
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return 1;
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if (this->port1 > ge->port1)
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return -1;
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if (this->port1 < ge->port1)
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return 1;
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// only compare IP:port
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// gameid and port2 are useless
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return 0;
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}
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int GameEntry::hash(int max)
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{
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unsigned int hash = 0x12345678;
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// IP
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hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>0) & 0xFF);
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hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>8) & 0xFF);
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hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>16) & 0xFF);
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hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>24) & 0xFF);
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// port
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hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>0) & 0xFF);
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hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>8) & 0xFF);
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return hash % max;
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}
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void GameEntry::update()
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{
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modtime = time(NULL);
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}
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int GameEntry::show(char* buf, int size)
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{
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return snprintf(buf, size, "(%2d:%15s:%5d:%5d)",
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this->gameid, inet_ntoa(this->addr),
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this->port1, this->port2);
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}
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