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2641c02193
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: 69fa4695 Add some missing deprecation annotations f850da2e Update Maven plugins/versions 8d8400db Use regular compiler seeing as ECJ doesn't support Java 21 JRE c29e1688 Revert "BUILDTOOLS-676: Downgrade Maven compiler version" 07bce714 SPIGOT-7355: More field renames and fixes 6a8ea764 Fix bad merge in penultimate commit 50a7920c Fix imports in previous commit 83640dd1 PR-995: Add required feature to MinecraftExperimental for easy lookups fc1f96cf BUILDTOOLS-676: Downgrade Maven compiler version CraftBukkit Changes: 90f1059ba Fix item placement 661afb43c SPIGOT-7633: Clearer error message for missing particle data 807b465b3 SPIGOT-7634: Armadillo updates infrequently 590cf09a8 Fix unit tests always seeing Mojang server as unavailable 7c7ac5eb2 SPIGOT-7636: Fix clearing ItemMeta 4a72905cf SPIGOT-7635: Fix Player#transfer and cookie methods ebb50e136 Fix incorrect Vault implementation b33fed8b7 Update Maven plugins/versions 6f00f0608 SPIGOT-7632: Control middle clicking chest does not copy contents db821f405 Use regular compiler seeing as ECJ doesn't support Java 21 JRE 8a2976737 Revert "BUILDTOOLS-676: Downgrade Maven compiler version" 0297f87bb SPIGOT-7355: More field renames and fixes 2d03bdf6a SPIGOT-7629: Fix loading banner patterns e77951fac Fix equality of deserialized display names c66f3e4fd SPIGOT-7631: Fix deserialisation of BlockStateMeta 9c2c7be8d SPIGOT-7630: Fix crash saving unticked leashed entities 8c1e7c841 PR-1384: Disable certain PlayerProfile tests, if Mojang's services or internet are not available ced93d572 SPIGOT-7626: sendSignChange() has no effect c77362cae SPIGOT-7625: ItemStack with lore cannot be serialized in 1.20.5 ff2004387 SPIGOT-7620: Fix server crash when hoppers transfer items to double chests 8b4abeb03 BUILDTOOLS-676: Downgrade Maven compiler version
70 lines
4.1 KiB
Diff
70 lines
4.1 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 b968026728b8b4e549eed9fa9b43919c6c19eb7a..c44a15fc358c28345302b1bf37fc4b111a77fe0e 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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@@ -83,6 +83,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener,
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private final String serverId;
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private final boolean transferred;
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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, boolean transferred) {
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this.state = ServerLoginPacketListenerImpl.State.HELLO;
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@@ -164,7 +165,7 @@ 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(StringUtil.isValidPlayerName(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(StringUtil.isValidPlayerName(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 d7bbdcc97745246718c92c9aba56d9f926897975..7406784899ba5f3575adf1ffe5e5d85ab430a841 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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@@ -676,7 +676,7 @@ 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/util/StringUtil.java b/src/main/java/net/minecraft/util/StringUtil.java
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index d3fc549a08993376c76c4ebebb788fea3f4ddf69..ae7ef47446c15b8a6878dd2d31b60cd0670eaf83 100644
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--- a/src/main/java/net/minecraft/util/StringUtil.java
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+++ b/src/main/java/net/minecraft/util/StringUtil.java
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@@ -64,7 +64,23 @@ public class StringUtil {
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}
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public static boolean isValidPlayerName(String name) {
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- return name.length() <= 16 && name.chars().filter(c -> c <= 32 || c >= 127).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 String filterText(String string) {
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