mirror of
https://github.com/PaperMC/Paper.git
synced 2024-10-02 16:37:56 +02:00
1cfd363d32
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: fc460d1b PR-735: Add Villager#zombify c8c8331e PR-690: Add method to read ItemStack input 62845f2f SPIGOT-6829: Add per-player world border API CraftBukkit Changes: a459f4d4 PR-1033: Add Villager#zombify d65d1430 PR-975: Add method to read ItemStack input b5559f8c SPIGOT-6990: Fix setRepairCost(0) in Anvil 6c308e1b SPIGOT-6829: Add per-player world border API Spigot Changes: 42b61526 SPIGOT-7000: Generation and /locate issues when using custom structure seeds
89 lines
4.8 KiB
Diff
89 lines
4.8 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/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 24ddf8cfdbe6ed2fb148f57f0d7dd98446b07bbc..da6346cacf08e12f7f1fabe2d5b1c66c82fab679 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -495,6 +495,12 @@ public class PaperConfig {
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set("settings.unsupported-settings.allow-tnt-duplication", null);
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}
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+ public static boolean performUsernameValidation;
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+ private static void performUsernameValidation() {
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+ performUsernameValidation = getBoolean("settings.unsupported-settings.perform-username-validation", true);
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+ }
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+
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+
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public static int playerAutoSaveRate = -1;
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public static int maxPlayerAutoSavePerTick = 10;
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private static void playerAutoSaveRate() {
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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 f5c1dff1d571e89f960f11400edbcbbea0620575..7065aa4522431d08018fec8e591ba7c255398140 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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@@ -61,6 +61,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
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private ServerPlayer delayedAcceptPlayer;
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public String hostname = ""; // CraftBukkit - add field
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private int velocityLoginMessageId = -1; // Paper - Velocity support
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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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@@ -226,11 +227,39 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
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// Paper end
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}
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+ // Paper start - validate usernames
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+ public static boolean validateUsername(String in) {
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+ if (in == null || in.isEmpty() || in.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 = in.length(); i < len; ++i) {
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+ char c = in.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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+ }
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+ // Paper end - validate usernames
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+
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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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this.gameProfile = packet.getGameProfile();
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Validate.validState(ServerLoginPacketListenerImpl.isValidUsername(this.gameProfile.getName()), "Invalid characters in username", new Object[0]);
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+ // Paper start - validate usernames
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+ if (com.destroystokyo.paper.PaperConfig.isProxyOnlineMode() && com.destroystokyo.paper.PaperConfig.performUsernameValidation) {
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+ if (!this.iKnowThisMayNotBeTheBestIdeaButPleaseDisableUsernameValidation && !validateUsername(this.gameProfile.getName())) {
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+ ServerLoginPacketListenerImpl.this.disconnect("Failed to verify username!");
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+ return;
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+ }
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+ }
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+ // Paper end - validate usernames
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if (this.server.usesAuthentication() && !this.connection.isMemoryConnection()) {
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this.state = ServerLoginPacketListenerImpl.State.KEY;
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this.connection.send(new ClientboundHelloPacket("", this.server.getKeyPair().getPublic().getEncoded(), this.nonce));
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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 6a3d444fcac8c7d561dcadb02f64eaa3c3d7b1cd..fae67931849eb0c19598def9f538c7971c36c575 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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@@ -707,7 +707,7 @@ 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) || (com.destroystokyo.paper.PaperConfig.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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