mirror of
https://github.com/PaperMC/Paper.git
synced 2024-11-25 20:16:19 +01:00
77 lines
4.3 KiB
Diff
77 lines
4.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
|
|
Date: Sat, 1 Jan 2022 05:19:37 -0800
|
|
Subject: [PATCH] Validate usernames
|
|
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
index baedae23865ea80c6546d1f6f439e1d7712258b9..e9cd90b6bb2f57d605323add43f12962bd7cb843 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
@@ -85,6 +85,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
|
|
private final String serverId;
|
|
private final boolean transferred;
|
|
private ServerPlayer player; // CraftBukkit
|
|
+ public boolean iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation = false; // Paper - username validation overriding
|
|
|
|
public ServerLoginPacketListenerImpl(MinecraftServer server, Connection connection, boolean transferred) {
|
|
this.state = ServerLoginPacketListenerImpl.State.HELLO;
|
|
@@ -166,7 +167,13 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
|
|
@Override
|
|
public void handleHello(ServerboundHelloPacket packet) {
|
|
Validate.validState(this.state == ServerLoginPacketListenerImpl.State.HELLO, "Unexpected hello packet", new Object[0]);
|
|
- Validate.validState(StringUtil.isValidPlayerName(packet.name()), "Invalid characters in username", new Object[0]);
|
|
+ // Paper start - Validate usernames
|
|
+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode()
|
|
+ && io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.performUsernameValidation
|
|
+ && !this.iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation) {
|
|
+ Validate.validState(StringUtil.isReasonablePlayerName(packet.name()), "Invalid characters in username", new Object[0]);
|
|
+ }
|
|
+ // Paper end - Validate usernames
|
|
this.requestedUsername = packet.name();
|
|
GameProfile gameprofile = this.server.getSingleplayerProfile();
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
|
|
index bc5088b4b8a60dcd87eb9a7e0858a5c45bd9a7d4..2b104326f718bdfa263554c60ead798659ab5fa0 100644
|
|
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
|
|
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
|
|
@@ -670,7 +670,7 @@ public abstract class PlayerList {
|
|
|
|
for (int i = 0; i < this.players.size(); ++i) {
|
|
entityplayer = (ServerPlayer) this.players.get(i);
|
|
- if (entityplayer.getUUID().equals(uuid)) {
|
|
+ if (entityplayer.getUUID().equals(uuid) || (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode() && entityplayer.getGameProfile().getName().equalsIgnoreCase(gameprofile.getName()))) { // Paper - validate usernames
|
|
list.add(entityplayer);
|
|
}
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/util/StringUtil.java b/src/main/java/net/minecraft/util/StringUtil.java
|
|
index d3fc549a08993376c76c4ebebb788fea3f4ddf69..0bd191acb9596d3aa21c337230d26f09d26f6888 100644
|
|
--- a/src/main/java/net/minecraft/util/StringUtil.java
|
|
+++ b/src/main/java/net/minecraft/util/StringUtil.java
|
|
@@ -67,6 +67,25 @@ public class StringUtil {
|
|
return name.length() <= 16 && name.chars().filter(c -> c <= 32 || c >= 127).findAny().isEmpty();
|
|
}
|
|
|
|
+ // Paper start - Username validation
|
|
+ public static boolean isReasonablePlayerName(final String name) {
|
|
+ if (name.isEmpty() || name.length() > 16) {
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ for (int i = 0, len = name.length(); i < len; ++i) {
|
|
+ final char c = name.charAt(i);
|
|
+ if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || (c == '_' || c == '.')) {
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ return true;
|
|
+ }
|
|
+ // Paper end - Username validation
|
|
+
|
|
public static String filterText(String string) {
|
|
return filterText(string, false);
|
|
}
|