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Ethan Lee
298
src/jake2/game/GameSVCmds.java
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298
src/jake2/game/GameSVCmds.java
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/*
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* Copyright (C) 1997-2001 Id Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* See the 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 along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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// Created on 01.02.2004 by RST.
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// $Id: GameSVCmds.java,v 1.4 2006/01/21 21:53:32 salomo Exp $
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package jake2.game;
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import jake2.Defines;
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import jake2.qcommon.Com;
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import jake2.util.Lib;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.ByteBuffer;
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import java.util.StringTokenizer;
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public class GameSVCmds {
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/**
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*
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* PACKET FILTERING
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*
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*
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* You can add or remove addresses from the filter list with:
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*
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* addip <ip> removeip <ip>
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*
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* The ip address is specified in dot format, and any unspecified digits
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* will match any value, so you can specify an entire class C network with
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* "addip 192.246.40".
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*
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* Removeip will only remove an address specified exactly the same way. You
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* cannot addip a subnet, then removeip a single host.
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*
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* listip Prints the current list of filters.
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*
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* writeip Dumps "addip <ip>" commands to listip.cfg so it can be execed at
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* a later date. The filter lists are not saved and restored by default,
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* because I beleive it would cause too much confusion.
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*
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* filterban <0 or 1>
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*
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* If 1 (the default), then ip addresses matching the current list will be
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* prohibited from entering the game. This is the default setting.
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*
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* If 0, then only addresses matching the list will be allowed. This lets
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* you easily set up a private game, or a game that only allows players from
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* your local network.
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*
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*/
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public static class ipfilter_t {
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int mask;
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int compare;
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};
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public static void Svcmd_Test_f() {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Svcmd_Test_f()\n");
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}
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public static final int MAX_IPFILTERS = 1024;
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static GameSVCmds.ipfilter_t ipfilters[] = new GameSVCmds.ipfilter_t[MAX_IPFILTERS];
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static int numipfilters;
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static {
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for (int n = 0; n < GameSVCmds.MAX_IPFILTERS; n++)
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GameSVCmds.ipfilters[n] = new ipfilter_t();
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}
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/**
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* StringToFilter.
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*/
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static boolean StringToFilter(String s, GameSVCmds.ipfilter_t f) {
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byte b[] = { 0, 0, 0, 0 };
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byte m[] = { 0, 0, 0, 0 };
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try {
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StringTokenizer tk = new StringTokenizer(s, ". ");
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for (int n = 0; n < 4; n++) {
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b[n] = (byte) Lib.atoi(tk.nextToken());
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if (b[n] != 0)
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m[n] = -1;
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}
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f.mask = ByteBuffer.wrap(m).getInt();
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f.compare = ByteBuffer.wrap(b).getInt();
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} catch (Exception e) {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH,
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"Bad filter address: " + s + "\n");
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return false;
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}
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return true;
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}
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/**
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* SV_FilterPacket.
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*/
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static boolean SV_FilterPacket(String from) {
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int i;
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int in;
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int m[] = { 0, 0, 0, 0 };
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int p = 0;
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char c;
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i = 0;
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while (p < from.length() && i < 4) {
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m[i] = 0;
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c = from.charAt(p);
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while (c >= '0' && c <= '9') {
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m[i] = m[i] * 10 + (c - '0');
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c = from.charAt(p++);
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}
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if (p == from.length() || c == ':')
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break;
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i++;
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p++;
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}
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in = (m[0] & 0xff) | ((m[1] & 0xff) << 8) | ((m[2] & 0xff) << 16)
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| ((m[3] & 0xff) << 24);
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for (i = 0; i < numipfilters; i++)
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if ((in & ipfilters[i].mask) == ipfilters[i].compare)
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return ((int) GameBase.filterban.value) != 0;
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return ((int) 1 - GameBase.filterban.value) != 0;
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}
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/**
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* SV_AddIP_f.
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*/
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static void SVCmd_AddIP_f() {
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int i;
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if (GameBase.gi.argc() < 3) {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH,
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"Usage: addip <ip-mask>\n");
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return;
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}
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for (i = 0; i < numipfilters; i++)
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if (ipfilters[i].compare == 0xffffffff)
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break; // free spot
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if (i == numipfilters) {
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if (numipfilters == MAX_IPFILTERS) {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH,
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"IP filter list is full\n");
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return;
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}
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numipfilters++;
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}
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if (!StringToFilter(GameBase.gi.argv(2), ipfilters[i]))
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ipfilters[i].compare = 0xffffffff;
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}
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/**
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* SV_RemoveIP_f.
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*/
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static void SVCmd_RemoveIP_f() {
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GameSVCmds.ipfilter_t f = new GameSVCmds.ipfilter_t();
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int i, j;
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if (GameBase.gi.argc() < 3) {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH,
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"Usage: sv removeip <ip-mask>\n");
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return;
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}
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if (!StringToFilter(GameBase.gi.argv(2), f))
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return;
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for (i = 0; i < numipfilters; i++)
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if (ipfilters[i].mask == f.mask
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&& ipfilters[i].compare == f.compare) {
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for (j = i + 1; j < numipfilters; j++)
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ipfilters[j - 1] = ipfilters[j];
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numipfilters--;
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Removed.\n");
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return;
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}
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Didn't find "
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+ GameBase.gi.argv(2) + ".\n");
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}
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/**
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* SV_ListIP_f.
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*/
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static void SVCmd_ListIP_f() {
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int i;
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byte b[];
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Filter list:\n");
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for (i = 0; i < numipfilters; i++) {
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b = Lib.getIntBytes(ipfilters[i].compare);
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GameBase.gi
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.cprintf(null, Defines.PRINT_HIGH, (b[0] & 0xff) + "."
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+ (b[1] & 0xff) + "." + (b[2] & 0xff) + "."
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+ (b[3] & 0xff));
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}
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}
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/**
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* SV_WriteIP_f.
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*/
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static void SVCmd_WriteIP_f() {
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RandomAccessFile f;
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//char name[MAX_OSPATH];
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String name;
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byte b[];
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int i;
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cvar_t game;
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game = GameBase.gi.cvar("game", "", 0);
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if (game.string == null)
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name = Defines.GAMEVERSION + "/listip.cfg";
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else
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name = game.string + "/listip.cfg";
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Writing " + name + ".\n");
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f = Lib.fopen(name, "rw");
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if (f == null) {
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH, "Couldn't open "
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+ name + "\n");
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return;
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}
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try {
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f.writeChars("set filterban " + (int) GameBase.filterban.value
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+ "\n");
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for (i = 0; i < numipfilters; i++) {
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b = Lib.getIntBytes(ipfilters[i].compare);
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f.writeChars("sv addip " + (b[0] & 0xff) + "." + (b[1] & 0xff)
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+ "." + (b[2] & 0xff) + "." + (b[3] & 0xff) + "\n");
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}
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} catch (IOException e) {
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Com.Printf("IOError in SVCmd_WriteIP_f:" + e);
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}
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Lib.fclose(f);
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}
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/**
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* ServerCommand
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*
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* ServerCommand will be called when an "sv" command is issued. The game can
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* issue gi.argc() / gi.argv() commands to get the rest of the parameters
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*/
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public static void ServerCommand() {
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String cmd;
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cmd = GameBase.gi.argv(1);
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if (Lib.Q_stricmp(cmd, "test") == 0)
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Svcmd_Test_f();
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else if (Lib.Q_stricmp(cmd, "addip") == 0)
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SVCmd_AddIP_f();
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else if (Lib.Q_stricmp(cmd, "removeip") == 0)
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SVCmd_RemoveIP_f();
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else if (Lib.Q_stricmp(cmd, "listip") == 0)
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SVCmd_ListIP_f();
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else if (Lib.Q_stricmp(cmd, "writeip") == 0)
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SVCmd_WriteIP_f();
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else
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GameBase.gi.cprintf(null, Defines.PRINT_HIGH,
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"Unknown server command \"" + cmd + "\"\n");
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}
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}
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