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ac69804c73
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: bf617659 SPIGOT-6313: Revert "SPIGOT-6274: Reloading configuration does not clear previous values" e8fa7a07 SPIGOT-6274: Reloading configuration does not clear previous values Spigot Changes: 5fc0fb4e SPIGOT-6306: Handle watchdog reloads and disabling by 0/negative times
90 lines
4.8 KiB
Diff
90 lines
4.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Joseph Hirschfeld <joe@ibj.io>
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Date: Thu, 3 Mar 2016 02:48:12 -0600
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Subject: [PATCH] Add velocity warnings
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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 6d410521707c88abbf1b9d2054bb16d3b1aa2394..cbf54bd024426e324c95b41b3eb6ebbadc4b8b13 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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@@ -263,6 +263,7 @@ public final class CraftServer implements Server {
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public boolean ignoreVanillaPermissions = false;
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private final List<CraftPlayer> playerView;
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public int reloadCount;
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+ public static Exception excessiveVelEx; // Paper - Velocity warnings
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static {
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ConfigurationSerialization.registerClass(CraftOfflinePlayer.class);
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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index b9a789b161d20aefd93142cb7549f3023d402e8c..baa54065500b98e3fabce053ad659b44d0a200ff 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -424,10 +424,41 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
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public void setVelocity(Vector velocity) {
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Preconditions.checkArgument(velocity != null, "velocity");
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velocity.checkFinite();
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+ // Paper start - Warn server owners when plugins try to set super high velocities
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+ if (!(this instanceof org.bukkit.entity.Projectile) && isUnsafeVelocity(velocity)) {
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+ CraftServer.excessiveVelEx = new Exception("Excessive velocity set detected: tried to set velocity of entity " + entity.getName() + " id #" + getEntityId() + " to (" + velocity.getX() + "," + velocity.getY() + "," + velocity.getZ() + ").");
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+ }
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+ // Paper end
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+
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entity.setMot(CraftVector.toNMS(velocity));
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entity.velocityChanged = true;
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}
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+ // Paper start
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+ /**
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+ * Checks if the given velocity is not necessarily safe in all situations.
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+ * This function returning true does not mean the velocity is dangerous or to be avoided, only that it may be
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+ * a detriment to performance on the server.
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+ *
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+ * It is not to be used as a hard rule of any sort.
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+ * Paper only uses it to warn server owners in watchdog crashes.
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+ *
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+ * @param vel incoming velocity to check
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+ * @return if the velocity has the potential to be a performance detriment
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+ */
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+ private static boolean isUnsafeVelocity(Vector vel) {
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+ final double x = vel.getX();
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+ final double y = vel.getY();
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+ final double z = vel.getZ();
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+
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+ if (x > 4 || x < -4 || y > 4 || y < -4 || z > 4 || z < -4) {
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+ return true;
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+ }
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+
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+ return false;
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+ }
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+ // Paper end
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+
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@Override
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public double getHeight() {
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return getHandle().getHeight();
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diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
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index bf240231b70dbaf71f359318e5c0f8ba1490a067..0cb3028872041ce9f75e57fdd84b79636d8809f3 100644
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--- a/src/main/java/org/spigotmc/WatchdogThread.java
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+++ b/src/main/java/org/spigotmc/WatchdogThread.java
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@@ -80,7 +80,19 @@ public class WatchdogThread extends Thread
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log.log( Level.SEVERE, "During the run of the server, a physics stackoverflow was supressed" );
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log.log( Level.SEVERE, "near " + net.minecraft.server.World.lastPhysicsProblem );
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}
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- //
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+ // Paper start - Warn in watchdog if an excessive velocity was ever set
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+ if ( org.bukkit.craftbukkit.CraftServer.excessiveVelEx != null )
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+ {
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+ log.log( Level.SEVERE, "------------------------------" );
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+ log.log( Level.SEVERE, "During the run of the server, a plugin set an excessive velocity on an entity" );
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+ log.log( Level.SEVERE, "This may be the cause of the issue, or it may be entirely unrelated" );
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+ log.log( Level.SEVERE, org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getMessage());
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+ for ( StackTraceElement stack : org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getStackTrace() )
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+ {
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+ log.log( Level.SEVERE, "\t\t" + stack );
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+ }
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+ }
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+ // Paper end
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log.log( Level.SEVERE, "------------------------------" );
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log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
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dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );
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