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Ignore AsyncCatcher setting for Command Dispatch, always force sync

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Plugins were abusing this to dispatch commands async anyways.

We will no longer check that flag, and force all commands to be ran sync.

Use a different boolean for allowing things go to through on shutdown/restart instead.

Resolves #1004
Resolves #1005
This commit is contained in:
Aikar
2018-02-15 00:34:58 -05:00
parent c28c88eb35
commit 1fcba9b26d
3 changed files with 44 additions and 8 deletions
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44
Spigot-Server-Patches/Ensure-commands-are-not-ran-async.patch
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@@ -14,7 +14,7 @@ big slowdown in execution but throwing an exception at same time to raise awaren
that it is happening so that plugin authors can fix their code to stop executing commands async.
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index da25a8be..5348c0cb 100644
index da25a8bea..48379f414 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -0,0 +0,0 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
@@ -22,7 +22,7 @@ index da25a8be..5348c0cb 100644
if (!async && s.startsWith("/")) {
+ // Paper Start
+ if (org.spigotmc.AsyncCatcher.enabled && !org.bukkit.Bukkit.isPrimaryThread()) {
+ if (!org.spigotmc.AsyncCatcher.shuttingDown && !org.bukkit.Bukkit.isPrimaryThread()) {
+ final String fCommandLine = s;
+ MinecraftServer.LOGGER.log(org.apache.logging.log4j.Level.ERROR, "Command Dispatched Async: " + fCommandLine);
+ MinecraftServer.LOGGER.log(org.apache.logging.log4j.Level.ERROR, "Please notify author of plugin causing this execution to fix this bug! see: http://bit.ly/1oSiM6C", new Throwable());
@@ -48,7 +48,7 @@ index da25a8be..5348c0cb 100644
} else if (this.player.getChatFlags() == EntityHuman.EnumChatVisibility.SYSTEM) {
// Do nothing, this is coming from a plugin
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index bfddd168..082957d3 100644
index bfddd1685..462ad1024 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -0,0 +0,0 @@ public final class CraftServer implements Server {
@@ -56,7 +56,7 @@ index bfddd168..082957d3 100644
Validate.notNull(commandLine, "CommandLine cannot be null");
+ // Paper Start
+ if (org.spigotmc.AsyncCatcher.enabled && !Bukkit.isPrimaryThread()) {
+ if (!org.spigotmc.AsyncCatcher.shuttingDown && !Bukkit.isPrimaryThread()) {
+ final CommandSender fSender = sender;
+ final String fCommandLine = commandLine;
+ Bukkit.getLogger().log(Level.SEVERE, "Command Dispatched Async: " + commandLine);
@@ -81,4 +81,40 @@ index bfddd168..082957d3 100644
if (commandMap.dispatch(sender, commandLine)) {
return true;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
index a0cdd2317..984df4083 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/ServerShutdownThread.java
@@ -0,0 +0,0 @@ public class ServerShutdownThread extends Thread {
public void run() {
try {
org.spigotmc.AsyncCatcher.enabled = false; // Spigot
+ org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
server.stop();
} catch (ExceptionWorldConflict ex) {
ex.printStackTrace();
diff --git a/src/main/java/org/spigotmc/AsyncCatcher.java b/src/main/java/org/spigotmc/AsyncCatcher.java
index 4b3aa85c9..e44c23016 100644
--- a/src/main/java/org/spigotmc/AsyncCatcher.java
+++ b/src/main/java/org/spigotmc/AsyncCatcher.java
@@ -0,0 +0,0 @@ public class AsyncCatcher
{
public static boolean enabled = true;
+ public static boolean shuttingDown = false; // Paper
public static void catchOp(String reason)
{
diff --git a/src/main/java/org/spigotmc/RestartCommand.java b/src/main/java/org/spigotmc/RestartCommand.java
index 49768734d..947c43a5d 100644
--- a/src/main/java/org/spigotmc/RestartCommand.java
+++ b/src/main/java/org/spigotmc/RestartCommand.java
@@ -0,0 +0,0 @@ public class RestartCommand extends Command
public static void restart(final File script)
{
AsyncCatcher.enabled = false; // Disable async catcher incase it interferes with us
+ org.spigotmc.AsyncCatcher.shuttingDown = true; // Paper
try
{
if ( script.isFile() )
--