mirror of
https://github.com/PaperMC/Paper.git
synced 2024-09-12 06:58:11 +02:00
The extra buffer used to decode the strings sent by the client in the legacy ping protocol was never released. However, creating an extra copy of the buffer just to decode it to a string isn't actually necessary: We can just call toString() directly on the original buffer. Additionally, free the buffer in handlerRemoved() to handle cases where the client never sends enough bytes to form a valid legacy ping request.
158 lines
7.1 KiB
Diff
158 lines
7.1 KiB
Diff
From fdff041cd1df94bc3a0173545b6e171c3cdf4579 Mon Sep 17 00:00:00 2001
|
|
From: Minecrell <minecrell@minecrell.net>
|
|
Date: Wed, 11 Oct 2017 19:30:51 +0200
|
|
Subject: [PATCH] Call PaperServerListPingEvent for legacy pings
|
|
|
|
|
|
diff --git a/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java b/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java
|
|
new file mode 100644
|
|
index 000000000..74c012fd4
|
|
--- /dev/null
|
|
+++ b/src/main/java/com/destroystokyo/paper/network/PaperLegacyStatusClient.java
|
|
@@ -0,0 +1,73 @@
|
|
+package com.destroystokyo.paper.network;
|
|
+
|
|
+import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
|
|
+import net.minecraft.server.MinecraftServer;
|
|
+import org.apache.commons.lang3.StringUtils;
|
|
+import org.bukkit.ChatColor;
|
|
+
|
|
+import java.net.InetSocketAddress;
|
|
+
|
|
+import javax.annotation.Nullable;
|
|
+
|
|
+public final class PaperLegacyStatusClient implements StatusClient {
|
|
+
|
|
+ private final InetSocketAddress address;
|
|
+ private final int protocolVersion;
|
|
+ @Nullable private final InetSocketAddress virtualHost;
|
|
+
|
|
+ private PaperLegacyStatusClient(InetSocketAddress address, int protocolVersion, @Nullable InetSocketAddress virtualHost) {
|
|
+ this.address = address;
|
|
+ this.protocolVersion = protocolVersion;
|
|
+ this.virtualHost = virtualHost;
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ public InetSocketAddress getAddress() {
|
|
+ return this.address;
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ public int getProtocolVersion() {
|
|
+ return this.protocolVersion;
|
|
+ }
|
|
+
|
|
+ @Nullable
|
|
+ @Override
|
|
+ public InetSocketAddress getVirtualHost() {
|
|
+ return this.virtualHost;
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ public boolean isLegacy() {
|
|
+ return true;
|
|
+ }
|
|
+
|
|
+ public static PaperServerListPingEvent processRequest(MinecraftServer server,
|
|
+ InetSocketAddress address, int protocolVersion, @Nullable InetSocketAddress virtualHost) {
|
|
+
|
|
+ PaperServerListPingEvent event = new PaperServerListPingEventImpl(server,
|
|
+ new PaperLegacyStatusClient(address, protocolVersion, virtualHost), Byte.MAX_VALUE, null);
|
|
+ server.server.getPluginManager().callEvent(event);
|
|
+
|
|
+ if (event.isCancelled()) {
|
|
+ return null;
|
|
+ }
|
|
+
|
|
+ return event;
|
|
+ }
|
|
+
|
|
+ public static String getMotd(PaperServerListPingEvent event) {
|
|
+ return getFirstLine(event.getMotd());
|
|
+ }
|
|
+
|
|
+ public static String getUnformattedMotd(PaperServerListPingEvent event) {
|
|
+ // Strip color codes and all other occurrences of the color char (because it's used as delimiter)
|
|
+ return getFirstLine(StringUtils.remove(ChatColor.stripColor(event.getMotd()), ChatColor.COLOR_CHAR));
|
|
+ }
|
|
+
|
|
+ private static String getFirstLine(String s) {
|
|
+ int pos = s.indexOf('\n');
|
|
+ return pos >= 0 ? s.substring(0, pos) : s;
|
|
+ }
|
|
+
|
|
+}
|
|
diff --git a/src/main/java/net/minecraft/server/LegacyPingHandler.java b/src/main/java/net/minecraft/server/LegacyPingHandler.java
|
|
index a89a86e6d..2762bcc2e 100644
|
|
--- a/src/main/java/net/minecraft/server/LegacyPingHandler.java
|
|
+++ b/src/main/java/net/minecraft/server/LegacyPingHandler.java
|
|
@@ -9,6 +9,7 @@ import java.net.InetSocketAddress;
|
|
import java.nio.charset.StandardCharsets;
|
|
import org.apache.logging.log4j.LogManager;
|
|
import org.apache.logging.log4j.Logger;
|
|
+import com.destroystokyo.paper.network.PaperLegacyStatusClient; // Paper
|
|
|
|
public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
|
|
|
|
@@ -41,11 +42,19 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
|
|
MinecraftServer minecraftserver = this.b.d();
|
|
int i = bytebuf.readableBytes();
|
|
String s;
|
|
+ com.destroystokyo.paper.event.server.PaperServerListPingEvent event; // Paper
|
|
|
|
switch (i) {
|
|
case 0:
|
|
LegacyPingHandler.a.debug("Ping: (<1.3.x) from {}:{}", inetsocketaddress.getAddress(), Integer.valueOf(inetsocketaddress.getPort()));
|
|
- s = String.format("%s\u00a7%d\u00a7%d", new Object[] { minecraftserver.getMotd(), Integer.valueOf(minecraftserver.H()), Integer.valueOf(minecraftserver.I())});
|
|
+ // Paper start - Call PaperServerListPingEvent and use results
|
|
+ event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 39, null);
|
|
+ if (event == null) {
|
|
+ channelhandlercontext.close();
|
|
+ break;
|
|
+ }
|
|
+ s = String.format("%s\u00a7%d\u00a7%d", PaperLegacyStatusClient.getUnformattedMotd(event), event.getNumPlayers(), event.getMaxPlayers());
|
|
+ // Paper end
|
|
this.a(channelhandlercontext, this.a(s));
|
|
break;
|
|
|
|
@@ -55,7 +64,15 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
|
|
}
|
|
|
|
LegacyPingHandler.a.debug("Ping: (1.4-1.5.x) from {}:{}", inetsocketaddress.getAddress(), Integer.valueOf(inetsocketaddress.getPort()));
|
|
- s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", new Object[] { Integer.valueOf(127), minecraftserver.getVersion(), minecraftserver.getMotd(), Integer.valueOf(minecraftserver.H()), Integer.valueOf(minecraftserver.I())});
|
|
+ // Paper start - Call PaperServerListPingEvent and use results
|
|
+ event = PaperLegacyStatusClient.processRequest(minecraftserver, inetsocketaddress, 61, null);
|
|
+ if (event == null) {
|
|
+ channelhandlercontext.close();
|
|
+ break;
|
|
+ }
|
|
+ s = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", event.getProtocolVersion(), event.getVersion(),
|
|
+ PaperLegacyStatusClient.getMotd(event), event.getNumPlayers(), event.getMaxPlayers());
|
|
+ // Paper end
|
|
this.a(channelhandlercontext, this.a(s));
|
|
break;
|
|
|
|
@@ -169,8 +186,16 @@ public class LegacyPingHandler extends ChannelInboundHandlerAdapter {
|
|
|
|
a.debug("Ping: (1.6) from {}", ctx.channel().remoteAddress());
|
|
|
|
- String response = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
|
|
- Byte.MAX_VALUE, server.getVersion(), server.getMotd(), server.getPlayerCount(), server.getMaxPlayers());
|
|
+ InetSocketAddress virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(host, port);
|
|
+ com.destroystokyo.paper.event.server.PaperServerListPingEvent event = PaperLegacyStatusClient.processRequest(
|
|
+ server, (InetSocketAddress) ctx.channel().remoteAddress(), protocolVersion, virtualHost);
|
|
+ if (event == null) {
|
|
+ ctx.close();
|
|
+ return;
|
|
+ }
|
|
+
|
|
+ String response = String.format("\u00a71\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d", event.getProtocolVersion(), event.getVersion(),
|
|
+ PaperLegacyStatusClient.getMotd(event), event.getNumPlayers(), event.getMaxPlayers());
|
|
this.a(ctx, this.a(response));
|
|
}
|
|
|
|
--
|
|
2.18.0
|
|
|