nitro/nitrowebsockets-for-ms
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added method for getting real-ip from http headers

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This commit is contained in:
Dank074 2021-01-27 23:17:09 -06:00
parent f9d94197d5
commit bc1e125d97
6 changed files with 97 additions and 42 deletions
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2
pom.xml
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@ -24,7 +24,7 @@
<dependency>
<groupId>com.eu.habbo</groupId>
<artifactId>Habbo</artifactId>
<version>2.5.0</version>
<version>3.0.0</version>
</dependency>
</dependencies>
</project>

22
src/main/java/org/krews/plugin/nitro/Utils.java Normal file
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@ -0,0 +1,22 @@
package org.krews.plugin.nitro;
import java.net.URI;
public class Utils {
public static String getDomainNameFromUrl(String url) throws Exception {
URI uri = new URI(url);
String domain = uri.getHost();
return domain.startsWith("www.") ? domain.substring(4) : domain;
}
public static boolean isWhitelisted(String toCheck, String[] whitelist) {
for(String whitelistEntry : whitelist) {
if(whitelistEntry.startsWith("*")) {
if(toCheck.endsWith(whitelistEntry.substring(1)) || ("." + toCheck).equals(whitelistEntry.substring(1))) return true;
} else {
if(toCheck.equals(whitelistEntry)) return true;
}
}
return false;
}
}

16
src/main/java/org/krews/plugin/nitro/main.java
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@ -6,12 +6,16 @@ import com.eu.habbo.plugin.EventHandler;
import com.eu.habbo.plugin.EventListener;
import com.eu.habbo.plugin.HabboPlugin;
import com.eu.habbo.plugin.events.emulator.EmulatorLoadedEvent;
import com.eu.habbo.plugin.events.users.UserGetIPAddressEvent;
import io.netty.channel.Channel;
import io.netty.util.AttributeKey;
import org.krews.plugin.nitro.websockets.NetworkChannelInitializer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class main extends HabboPlugin implements EventListener {
private static final Logger LOGGER = LoggerFactory.getLogger(main.class);
public static final AttributeKey<String> WS_IP = AttributeKey.valueOf("WS_IP");
public void onEnable() throws Exception {
Emulator.getPluginManager().registerEvents(this, this);
@ -34,6 +38,7 @@ public class main extends HabboPlugin implements EventListener {
Emulator.getConfig().register("websockets.whitelist", "localhost");
Emulator.getConfig().register("ws.nitro.host", "0.0.0.0");
Emulator.getConfig().register("ws.nitro.port", "2096");
Emulator.getConfig().register("ws.nitro.ip.header", "");
Emulator.getGameServer().getServerBootstrap().childHandler(new NetworkChannelInitializer());
@ -42,4 +47,15 @@ public class main extends HabboPlugin implements EventListener {
LOGGER.info("OFFICIAL PLUGIN - Nitro Websockets has started!");
LOGGER.info("Nitro Websockets Listening on " + Emulator.getConfig().getValue("ws.nitro.host", "0.0.0.0") + ":" + Emulator.getConfig().getInt("ws.nitro.port", 2096));
}
@EventHandler
public void onUserGetIPEvent(UserGetIPAddressEvent e) {
Channel channel = e.habbo.getClient().getChannel();
if(channel != null && channel.hasAttr(main.WS_IP)) {
String ip = channel.attr(main.WS_IP).get();
if(!ip.isEmpty()) {
e.setUpdatedIp(ip);
}
}
}
}

43
src/main/java/org/krews/plugin/nitro/websockets/codec/WebSocketCodec.java
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@ -1,19 +1,16 @@
package org.krews.plugin.nitro.websockets.codec;
import com.eu.habbo.Emulator;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToMessageCodec;
import io.netty.handler.codec.http.websocketx.*;
import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import io.netty.handler.codec.http.websocketx.WebSocketFrame;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
public class WebSocketCodec extends MessageToMessageCodec<WebSocketFrame, ByteBuf> {
@Override
protected void encode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
protected void encode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
out.add(new BinaryWebSocketFrame(in).retain());
}
@ -21,39 +18,5 @@ public class WebSocketCodec extends MessageToMessageCodec<WebSocketFrame, ByteBu
protected void decode(ChannelHandlerContext ctx, WebSocketFrame in, List<Object> out) {
out.add(in.content().retain());
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
// only allow websockets connections from the whitelist
if(evt instanceof WebSocketServerProtocolHandler.HandshakeComplete) {
WebSocketServerProtocolHandler.HandshakeComplete handshake = (WebSocketServerProtocolHandler.HandshakeComplete)evt;
String origin = getDomainName(handshake.requestHeaders().get("Origin"));
if(!isWhitelisted(origin)) {
ctx.channel().writeAndFlush(new CloseWebSocketFrame(403, "Origin forbidden")).addListener(ChannelFutureListener.CLOSE);
}
}
else {
super.userEventTriggered(ctx, evt);
}
}
public static String getDomainName(String url) throws URISyntaxException {
URI uri = new URI(url);
String domain = uri.getHost();
return domain.startsWith("www.") ? domain.substring(4) : domain;
}
public static boolean isWhitelisted(String origin) {
String[] allowedOrigins = Emulator.getConfig().getValue("websockets.whitelist", "localhost").split(",");
for(String entry : allowedOrigins) {
if(entry.startsWith("*")) {
if(origin.endsWith(entry.substring(1)) || ("." + origin).equals(entry.substring(1))) return true;
} else {
if(origin.equals(entry)) return true;
}
}
return false;
}
}

53
src/main/java/org/krews/plugin/nitro/websockets/handlers/CustomHTTPHandler.java Normal file
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@ -0,0 +1,53 @@
package org.krews.plugin.nitro.websockets.handlers;
import com.eu.habbo.Emulator;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.http.*;
import io.netty.util.ReferenceCountUtil;
import org.krews.plugin.nitro.Utils;
import org.krews.plugin.nitro.main;
public class CustomHTTPHandler extends ChannelInboundHandlerAdapter {
private static final String ORIGIN_HEADER = "Origin";
//private static final String FORWARD_PROXY_REALIP = "X-Forwarded-For";
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
if(msg instanceof HttpMessage) {
if(!handleHttpRequest(ctx, (HttpMessage) msg))
{
ReferenceCountUtil.release(msg);//discard message
return;
}
}
super.channelRead(ctx, msg);
ctx.pipeline().remove(this);
}
public boolean handleHttpRequest(ChannelHandlerContext ctx, HttpMessage req) {
String origin = "error";
try {
if(req.headers().contains(ORIGIN_HEADER)) {
origin = Utils.getDomainNameFromUrl(req.headers().get(ORIGIN_HEADER));
}
} catch (Exception ignored) { }
if(!Utils.isWhitelisted(origin, Emulator.getConfig().getValue("websockets.whitelist", "localhost").split(","))) {
FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.FORBIDDEN, Unpooled.wrappedBuffer("Origin forbidden".getBytes()));
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
return false;
}
String header = Emulator.getConfig().getValue("ws.nitro.ip.header", "");
if(!header.isEmpty() && req.headers().contains(header)) {
String ip = req.headers().get(header);
ctx.channel().attr(main.WS_IP).set(ip);
}
return true;
}
}

3
src/main/java/org/krews/plugin/nitro/websockets/handlers/MessageInterceptorHandler.java
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@ -1,6 +1,5 @@
package org.krews.plugin.nitro.websockets.handlers;
import org.krews.plugin.nitro.websockets.codec.WebSocketCodec;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
@ -8,6 +7,7 @@ import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.util.CharsetUtil;
import org.krews.plugin.nitro.websockets.codec.WebSocketCodec;
import java.util.List;
@ -18,6 +18,7 @@ public class MessageInterceptorHandler extends ByteToMessageDecoder {
// this is a websocket upgrade request, so add the appropriate decoders/encoders
ctx.pipeline().addAfter("messageInterceptor", "websocketCodec", new WebSocketCodec());
ctx.pipeline().addAfter("messageInterceptor", "protocolHandler", new WebSocketServerProtocolHandler("/", true));
ctx.pipeline().addAfter("messageInterceptor", "customhttpHandler", new CustomHTTPHandler());
ctx.pipeline().addAfter("messageInterceptor", "objectAggregator", new HttpObjectAggregator(65536));
ctx.pipeline().addAfter("messageInterceptor", "httpCodec", new HttpServerCodec());
}