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71c84c8132
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 9a80d38c SPIGOT-336, SPIGOT-3366, SPIGOT-5768, SPIGOT-6409, SPIGOT-6861, PR-722: Add EntityRemoveEvent 258086d9 SPIGOT-7417, PR-967: Add Sign#getTargetSide and Sign#getAllowedEditor ffaba051 SPIGOT-7584: Add missing Tag.ITEMS_NON_FLAMMABLE_WOOD CraftBukkit Changes: 98b6c1ac7 SPIGOT-7589 Fix NullPointerException when bans expire a2736ddb0 SPIGOT-336, SPIGOT-3366, SPIGOT-5768, SPIGOT-6409, SPIGOT-6861, PR-1008: Add EntityRemoveEvent 5bf12cb89 SPIGOT-7565: Throw a more descriptive error message when a developer tries to spawn an entity from a CraftBukkit class 76d95fe7e SPIGOT-7417, PR-1343: Add Sign#getTargetSide and Sign#getAllowedEditor Spigot Changes: e9ec5485 Rebuild patches f1b62e0c Rebuild patches
71 lines
4.2 KiB
Diff
71 lines
4.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sat, 1 Jan 2022 05:19:37 -0800
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Subject: [PATCH] Validate usernames
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diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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index a7da99ac31bbcb8b6f1814a2d5509c7067aafb08..fb582acfe9e5cb68314ee39e1d54a550d6700e76 100644
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--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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@@ -63,6 +63,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
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public GameProfile authenticatedProfile; // Paper - public
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private final String serverId;
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private ServerPlayer player; // CraftBukkit
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+ public boolean iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation = false; // Paper - username validation overriding
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public ServerLoginPacketListenerImpl(MinecraftServer server, Connection connection) {
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this.state = ServerLoginPacketListenerImpl.State.HELLO;
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@@ -137,7 +138,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
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@Override
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public void handleHello(ServerboundHelloPacket packet) {
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Validate.validState(this.state == ServerLoginPacketListenerImpl.State.HELLO, "Unexpected hello packet", new Object[0]);
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- Validate.validState(Player.isValidUsername(packet.name()), "Invalid characters in username", new Object[0]);
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+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode() && io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.performUsernameValidation && !this.iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation) Validate.validState(Player.isValidUsername(packet.name()), "Invalid characters in username", new Object[0]); // Paper - config username validation
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this.requestedUsername = packet.name();
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GameProfile gameprofile = this.server.getSingleplayerProfile();
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diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
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index 7cd6d91fe154d29ec0b0fc0a5a50713bbc2c1c83..95ba9b3bf957e5f744e85b3834a50ee2eb925a70 100644
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--- a/src/main/java/net/minecraft/server/players/PlayerList.java
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+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
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@@ -678,7 +678,7 @@ public abstract class PlayerList {
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for (int i = 0; i < this.players.size(); ++i) {
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entityplayer = (ServerPlayer) this.players.get(i);
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- if (entityplayer.getUUID().equals(uuid)) {
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+ if (entityplayer.getUUID().equals(uuid) || (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.isProxyOnlineMode() && entityplayer.getGameProfile().getName().equalsIgnoreCase(gameprofile.getName()))) { // Paper - validate usernames
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list.add(entityplayer);
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}
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}
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diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
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index e06cb31f9e3eda651a44dcede095ef7b38ef2ba7..7c0db708575ef26a1dd73709bf22653f21e0c863 100644
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--- a/src/main/java/net/minecraft/world/entity/player/Player.java
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+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
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@@ -2341,9 +2341,23 @@ public abstract class Player extends LivingEntity {
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}
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public static boolean isValidUsername(String name) {
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- return name.length() > 16 ? false : name.chars().filter((i) -> {
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- return i <= 32 || i >= 127;
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- }).findAny().isEmpty();
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+ // Paper start - username validation overriding
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+ if (name == null || name.isEmpty() || name.length() > 16) {
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+ return false;
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+ }
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+
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+ for (int i = 0, len = name.length(); i < len; ++i) {
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+ char c = name.charAt(i);
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+
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+ if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || (c == '_' || c == '.')) {
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+ continue;
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+ }
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+
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+ return false;
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+ }
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+
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+ return true;
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+ // Paper end - username validation overriding
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}
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public static float getPickRange(boolean creative) {
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