69 lines
1.3 KiB
C++
69 lines
1.3 KiB
C++
#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, NetPkt* pkt, int port2)
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: port2(port2), gameid(gameid)
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{
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memcpy(&addr, &pkt->getAddress()->sin_addr, sizeof(addr));
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this->port1 = pkt->getPort();
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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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