geforkt von Mirrors/Paper
71 Zeilen
3.8 KiB
Diff
71 Zeilen
3.8 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 0c4fb4a7d4fcdc6d724beb13a16bd729a3c525cd..20ba13c06edf125ba216d1ca8794868abcd8f916 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
|
|
@@ -63,6 +63,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
|
|
public GameProfile authenticatedProfile; // Paper - public
|
|
private final String serverId;
|
|
private ServerPlayer player; // CraftBukkit
|
|
+ public boolean iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation = false; // Paper - username validation overriding
|
|
|
|
public ServerLoginPacketListenerImpl(MinecraftServer server, Connection connection) {
|
|
this.state = ServerLoginPacketListenerImpl.State.HELLO;
|
|
@@ -134,10 +135,38 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
|
|
return this.requestedUsername != null ? this.requestedUsername + " (" + s + ")" : s;
|
|
}
|
|
|
|
+ // Paper start - validate usernames
|
|
+ public static boolean validateUsername(String in) {
|
|
+ if (in == null || in.isEmpty() || in.length() > 16) {
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ for (int i = 0, len = in.length(); i < len; ++i) {
|
|
+ char c = in.charAt(i);
|
|
+
|
|
+ if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || (c == '_' || c == '.')) {
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ return true;
|
|
+ }
|
|
+ // Paper end - validate usernames
|
|
+
|
|
@Override
|
|
public void handleHello(ServerboundHelloPacket packet) {
|
|
Validate.validState(this.state == ServerLoginPacketListenerImpl.State.HELLO, "Unexpected hello packet", new Object[0]);
|
|
Validate.validState(Player.isValidUsername(packet.name()), "Invalid characters in username", new Object[0]);
|
|
+ // Paper start - validate usernames -- TODO: Do we need this?
|
|
+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode() && io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.performUsernameValidation) {
|
|
+ if (!this.iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation && !validateUsername(packet.name())) {
|
|
+ ServerLoginPacketListenerImpl.this.disconnect("Failed to verify username!");
|
|
+ return;
|
|
+ }
|
|
+ }
|
|
+ // 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 c92545e3cd199c7e123f65d42ca8976d2da27509..1e15c3576b6b506335c66a4ca0a47f3aa178c72a 100644
|
|
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
|
|
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
|
|
@@ -679,7 +679,7 @@ 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);
|
|
}
|
|
}
|