hlswmaster-ng (now in c++)
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/***************************************************************************
* Copyright (C) 04/2006 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "gameentry.h"
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>
#include "gameentry.h"
GameEntry::GameEntry(int gameid, struct in_addr *addr, int port1, int port2)
: port1(port1), port2(port2), gameid(gameid)
{
memcpy(&this->addr, addr, sizeof(this->addr));
if (port2 != 0) {
this->port2 = this->port1;
this->port1 = port2;
}
update();
}
int GameEntry::compare(const GameEntry* ge)
{
if (this->addr.s_addr > ge->addr.s_addr)
return -1;
if (this->addr.s_addr < ge->addr.s_addr)
return 1;
if (this->port1 > ge->port1)
return -1;
if (this->port1 < ge->port1)
return 1;
// only compare IP:port
// gameid and port2 are useless
return 0;
}
int GameEntry::hash(int max)
{
unsigned int hash = 0x12345678;
// IP
hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>0) & 0xFF);
hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>8) & 0xFF);
hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>16) & 0xFF);
hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>24) & 0xFF);
// port
hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>0) & 0xFF);
hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>8) & 0xFF);
return hash % max;
}
void GameEntry::update()
{
modtime = time(NULL);
}
int GameEntry::show(char* buf, int size)
{
return snprintf(buf, size, "(%2d:%15s:%5d:%5d)",
this->gameid, inet_ntoa(this->addr),
this->port1, this->port2);
}