From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Tue, 5 Oct 2021 20:04:21 +0200
Subject: [PATCH] Add config option for logging player ip addresses


diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 31e057e16c04f6cb6a4fa42e6ac9e81198e24d79..609f7ff543353ede53dc46dafc5a2fd0b0622cd8 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -91,6 +91,11 @@ public class PaperConfig {
         }
     }
 
+    public static boolean logPlayerIpAddresses = true;
+    private static void playerIpAddresses() {
+        logPlayerIpAddresses = getBoolean("settings.log-player-ip-addresses", logPlayerIpAddresses);
+    }
+
     public static int maxJoinsPerTick;
     private static void maxJoinsPerTick() {
         maxJoinsPerTick = getInt("settings.max-joins-per-tick", 3);
diff --git a/src/main/java/net/minecraft/network/protocol/PacketUtils.java b/src/main/java/net/minecraft/network/protocol/PacketUtils.java
index f7bb26e8b7a74a9ae5b469351b2fccc6fc80ab6a..230f5adc4df1679597f5b9aa9fcd36501efbebdd 100644
--- a/src/main/java/net/minecraft/network/protocol/PacketUtils.java
+++ b/src/main/java/net/minecraft/network/protocol/PacketUtils.java
@@ -51,10 +51,11 @@ public class PacketUtils {
                         packet.handle(listener);
                     } catch (Exception exception) {
                         net.minecraft.network.Connection networkmanager = listener.getConnection();
+                        String playerIP = com.destroystokyo.paper.PaperConfig.logPlayerIpAddresses ? String.valueOf(networkmanager.getRemoteAddress()) : "<ip address withheld>"; // Paper
                         if (networkmanager.getPlayer() != null) {
-                            LOGGER.error("Error whilst processing packet {} for {}[{}]", packet, networkmanager.getPlayer().getScoreboardName(), networkmanager.getRemoteAddress(), exception);
+                            LOGGER.error("Error whilst processing packet {} for {}[{}]", packet, networkmanager.getPlayer().getScoreboardName(), playerIP, exception); // Paper
                         } else {
-                            LOGGER.error("Error whilst processing packet {} for connection from {}", packet, networkmanager.getRemoteAddress(), exception);
+                            LOGGER.error("Error whilst processing packet {} for connection from {}", packet, playerIP, exception); // Paper
                         }
                         net.minecraft.network.chat.TextComponent error = new net.minecraft.network.chat.TextComponent("Packet processing error");
                         networkmanager.send(new net.minecraft.network.protocol.game.ClientboundDisconnectPacket(error), (future) -> {
diff --git a/src/main/java/net/minecraft/server/network/LegacyQueryHandler.java b/src/main/java/net/minecraft/server/network/LegacyQueryHandler.java
index 53e87ea23dacd123cc47bd8ca43d0f19e69acaf2..a03cb44f2296b7df60fa39879e54a5c56b22a3d5 100644
--- a/src/main/java/net/minecraft/server/network/LegacyQueryHandler.java
+++ b/src/main/java/net/minecraft/server/network/LegacyQueryHandler.java
@@ -183,7 +183,7 @@ public class LegacyQueryHandler extends ChannelInboundHandlerAdapter {
         buf.release();
         this.buf = null;
 
-        LOGGER.debug("Ping: (1.6) from {}", ctx.channel().remoteAddress());
+        LOGGER.debug("Ping: (1.6) from {}", com.destroystokyo.paper.PaperConfig.logPlayerIpAddresses ? ctx.channel().remoteAddress() : "<ip address withheld>"); // Paper
 
         InetSocketAddress virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(host, port);
         com.destroystokyo.paper.event.server.PaperServerListPingEvent event = com.destroystokyo.paper.network.PaperLegacyStatusClient.processRequest(
diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
index af4d9244102bd0ac204f44a8de7f3a7706e3692d..058fb3696c7ece4a7b6971886b1760b26add733b 100644
--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
@@ -204,7 +204,7 @@ public class ServerConnectionListener {
                                 throw new ReportedException(CrashReport.forThrowable(exception, "Ticking memory connection"));
                             }
 
-                            ServerConnectionListener.LOGGER.warn("Failed to handle packet for {}", networkmanager.getRemoteAddress(), exception);
+                            ServerConnectionListener.LOGGER.warn("Failed to handle packet for {}", com.destroystokyo.paper.PaperConfig.logPlayerIpAddresses ? String.valueOf(networkmanager.getRemoteAddress()) : "<ip address withheld>", exception); // Paper
                             TextComponent chatcomponenttext = new TextComponent("Internal server error");
 
                             networkmanager.send(new ClientboundDisconnectPacket(chatcomponenttext), (future) -> {
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
index 4cd92875d60c2f1dcce67ac99e9ba257a10f87b1..f5c1dff1d571e89f960f11400edbcbbea0620575 100644
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
@@ -220,7 +220,10 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
     }
 
     public String getUserName() {
-        return this.gameProfile != null ? this.gameProfile + " (" + this.connection.getRemoteAddress() + ")" : String.valueOf(this.connection.getRemoteAddress());
+        // Paper start
+        String ip = com.destroystokyo.paper.PaperConfig.logPlayerIpAddresses ? String.valueOf(this.connection.getRemoteAddress()) : "<ip address withheld>";
+        return this.gameProfile != null ? this.gameProfile + " (" + ip + ")" : String.valueOf(ip);
+        // Paper end
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index 0c2d1a8feb15bc2bc6ce2674b24222d5c501cd18..d9cd0bb20be6eca5db889f1350b829c0309e021f 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -238,7 +238,7 @@ public abstract class PlayerList {
         final String s1;
 
         if (connection.getRemoteAddress() != null) {
-            s1 = connection.getRemoteAddress().toString();
+            s1 = com.destroystokyo.paper.PaperConfig.logPlayerIpAddresses ? connection.getRemoteAddress().toString() : "<ip address withheld>"; // Paper
         } else {
             s1 = "local";
         }