mirror of
https://github.com/PaperMC/Paper.git
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ef0e5a642d
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: 9ae3f10f SPIGOT-3842: Add Player#fireworkBoost() and expand Firework API 48c0c547 PR-786: Add methods to get sounds from entities CraftBukkit Changes: 5cc9c022a SPIGOT-7152: Handle hand item changing during air interact event 4ffa1acf6 SPIGOT-7154: Players get kicked when interacting with a conversation 4daa21123 SPIGOT-3842: Add Player#fireworkBoost() and expand Firework API e5d6a9bbf PR-1100: Add methods to get sounds from entities b7e9f1c8b SPIGOT-7146: Reduce use of Material switch in ItemMeta Spigot Changes: 4c157bb4 Rebuild patches
169 lines
9 KiB
Diff
169 lines
9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 3 Mar 2016 01:17:12 -0600
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Subject: [PATCH] Ensure commands are not ran async
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Plugins calling Player.chat("/foo") or Server.dispatchCommand() could
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trigger the server to execute a command while on another thread.
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These commands would then process EXPECTING to be on the main thread, leaving to
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very hard to trace concurrency issues.
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This change will synchronize the command execution back to the main thread, causing a
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big slowdown in execution but throwing an exception at same time to raise awareness
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that it is happening so that plugin authors can fix their code to stop executing commands async.
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This also properly splits up the chat and command handling to reflect the server now
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having separate packets for both, and the client always using the correct packet. Text
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from a chat packet should never be parsed into a command, even if it starts with the `/`
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character.
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Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 22c095539425a6667b8e7f5c5f0a8ff2e87adfb5..e21a6961bab606036440f2a6bd90998b4129ae10 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -2038,7 +2038,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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return true;
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}
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- private static boolean isChatMessageIllegal(String message) {
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+ public static boolean isChatMessageIllegal(String message) { // Paper - private -> public
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for (int i = 0; i < message.length(); ++i) {
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if (!SharedConstants.isAllowedChatCharacter(message.charAt(i))) {
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return true;
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@@ -2055,7 +2055,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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OutgoingPlayerChatMessage outgoing = OutgoingPlayerChatMessage.create(original);
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- if (!async && s.startsWith("/")) {
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+ if (false && !async && s.startsWith("/")) { // Paper - don't handle commands in chat logic
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this.handleCommand(s);
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} else if (this.player.getChatVisibility() == ChatVisiblity.SYSTEM) {
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// Do nothing, this is coming from a plugin
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@@ -2158,7 +2158,29 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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}
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}
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- private void handleCommand(String s) {
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+ public void handleCommand(String s) { // Paper - private -> public
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+ // Paper Start
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+ if (!org.spigotmc.AsyncCatcher.shuttingDown && !org.bukkit.Bukkit.isPrimaryThread()) {
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+ LOGGER.error("Command Dispatched Async: " + s);
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+ LOGGER.error("Please notify author of plugin causing this execution to fix this bug! see: http://bit.ly/1oSiM6C", new Throwable());
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+ Waitable<Void> wait = new Waitable<>() {
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+ @Override
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+ protected Void evaluate() {
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+ ServerGamePacketListenerImpl.this.handleCommand(s);
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+ return null;
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+ }
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+ };
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+ server.processQueue.add(wait);
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+ try {
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+ wait.get();
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+ return;
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+ } catch (InterruptedException e) {
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+ Thread.currentThread().interrupt(); // This is proper habit for java. If we aren't handling it, pass it on!
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+ } catch (Exception e) {
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+ throw new RuntimeException("Exception processing chat command", e.getCause());
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+ }
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+ }
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+ // Paper End
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co.aikar.timings.MinecraftTimings.playerCommandTimer.startTiming(); // Paper
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if ( org.spigotmc.SpigotConfig.logCommands ) // Spigot
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this.LOGGER.info(this.player.getScoreboardName() + " issued server command: " + s);
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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index 56efe95512c851b965f2295d5eac7bc0c67bdb1f..1c6577bbbc005131661cbb4667cff6494b8fe5e4 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -863,6 +863,28 @@ public final class CraftServer implements Server {
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Validate.notNull(commandLine, "CommandLine cannot be null");
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org.spigotmc.AsyncCatcher.catchOp("command dispatch"); // Spigot
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+ // Paper Start
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+ if (!org.spigotmc.AsyncCatcher.shuttingDown && !Bukkit.isPrimaryThread()) {
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+ final CommandSender fSender = sender;
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+ final String fCommandLine = commandLine;
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+ Bukkit.getLogger().log(Level.SEVERE, "Command Dispatched Async: " + commandLine);
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+ Bukkit.getLogger().log(Level.SEVERE, "Please notify author of plugin causing this execution to fix this bug! see: http://bit.ly/1oSiM6C", new Throwable());
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+ org.bukkit.craftbukkit.util.Waitable<Boolean> wait = new org.bukkit.craftbukkit.util.Waitable<Boolean>() {
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+ @Override
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+ protected Boolean evaluate() {
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+ return dispatchCommand(fSender, fCommandLine);
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+ }
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+ };
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+ net.minecraft.server.MinecraftServer.getServer().processQueue.add(wait);
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+ try {
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+ return wait.get();
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+ } catch (InterruptedException e) {
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+ Thread.currentThread().interrupt(); // This is proper habit for java. If we aren't handling it, pass it on!
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+ } catch (Exception e) {
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+ throw new RuntimeException("Exception processing dispatch command", e.getCause());
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+ }
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+ }
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+ // Paper End
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if (this.commandMap.dispatch(sender, commandLine)) {
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return true;
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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index 82a640887a75c360539c1787dbbb32750f6b1379..2666e55d72fd7731a2bde42d690762a2747dac90 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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@@ -461,7 +461,19 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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public void chat(String msg) {
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if (this.getHandle().connection == null) return;
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- this.getHandle().connection.chat(msg, PlayerChatMessage.system(new ChatMessageContent(msg)), false);
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+ // Paper start - improve chat handling
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+ if (ServerGamePacketListenerImpl.isChatMessageIllegal(msg)) {
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+ this.getHandle().connection.disconnect(Component.translatable("multiplayer.disconnect.illegal_characters"), org.bukkit.event.player.PlayerKickEvent.Cause.ILLEGAL_CHARACTERS);
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+ } else {
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+ if (msg.startsWith("/")) {
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+ this.getHandle().connection.handleCommand(msg);
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+ } else {
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+ // TODO text filtering
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+ // TODO chat decorating
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+ this.getHandle().connection.chat(msg, PlayerChatMessage.system(new net.minecraft.network.chat.ChatMessageContent(msg)), false);
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+ }
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+ }
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+ // Paper en
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}
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@Override
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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index 19c44daaa407b7c1c7a7ffe56fef8c8814c6d5b2..6a073a9dc44d93eba296a0e18a9c7be8a7881725 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
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@@ -13,6 +13,7 @@ public class ServerShutdownThread extends Thread {
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public void run() {
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try {
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org.spigotmc.AsyncCatcher.enabled = false; // Spigot
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+ org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
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this.server.close();
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} finally {
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try {
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diff --git a/src/main/java/org/spigotmc/AsyncCatcher.java b/src/main/java/org/spigotmc/AsyncCatcher.java
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index 78669fa035b7537ff7e533cf32aaf2995625424f..7585a30e8f063ac2656b5de519b1e9edaceffbc7 100644
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--- a/src/main/java/org/spigotmc/AsyncCatcher.java
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+++ b/src/main/java/org/spigotmc/AsyncCatcher.java
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@@ -6,6 +6,7 @@ public class AsyncCatcher
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{
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public static boolean enabled = true;
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+ public static boolean shuttingDown = false; // Paper
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public static void catchOp(String reason)
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{
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diff --git a/src/main/java/org/spigotmc/RestartCommand.java b/src/main/java/org/spigotmc/RestartCommand.java
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index 882e93ad4471e3688f2fcfb1e6f16926786ee5e7..94d8ba376cd1f024b244654cac9bb62bb19e3060 100644
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--- a/src/main/java/org/spigotmc/RestartCommand.java
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+++ b/src/main/java/org/spigotmc/RestartCommand.java
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@@ -43,6 +43,7 @@ public class RestartCommand extends Command
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private static void restart(final String restartScript)
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{
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AsyncCatcher.enabled = false; // Disable async catcher incase it interferes with us
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+ org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
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try
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{
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String[] split = restartScript.split( " " );
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