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PaperMC/patches/server/0061-Add-velocity-warnings.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Joseph Hirschfeld <joe@ibj.io>
Date: Thu, 3 Mar 2016 02:48:12 -0600
Subject: [PATCH] Add velocity warnings
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
2024-10-27 18:11:15 +01:00
index 63573ec7e8f855a1afd892c9615a45c1bc742ac1..bb562ada45b828c79d83afdd1687edd32cbaf1dc 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
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@@ -305,6 +305,7 @@ public final class CraftServer implements Server {
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private final List<CraftPlayer> playerView;
public int reloadCount;
Update upstream (Bukkit/CraftBukkit/Spigot) (#10875) 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: 376e37db SPIGOT-7677: Update which entities are marked as spawnable 06c4add3 SPIGOT-7737: Add separate TreeType.MEGA_PINE 19b7caaa SPIGOT-7731: Spawn eggs cannot have damage e585297e PR-1022: Add force option to Player#spawnParticle d26e0094 PR-1018: Add methods to get players seeing specific chunks 8df1ed18 PR-978: Add Material#isCompostable and Material#getCompostChance 4b9b59c7 SPIGOT-7676: Enforce locale parameter in toLowerCase and toUpperCase method calls and always use root locale 8d1e700a PR-1020: Cast instead of using #typed when getting BlockType and ItemType to better work with testing / mocks fa28607a PR-1016: Fix incorrect assumption of Fireball having constant speed 4c6c8586 PR-1015: Add a tool component to ItemMeta 6f6b2123 PR-1014: Add PotionEffectTypeCategory to distinguish between beneficial and harmful effects f511cfe1 PR-1013, SPIGOT-4288, SPIGOT-6202: Add material rerouting in preparation for the switch to ItemType and BlockType def44cbf SPIGOT-7669: Fix typo in ProjectileHitEvent#getHitBlockFace documentation 53fa4f72 PR-1011: Throw an exception if a RecipeChoice is ever supplied air CraftBukkit Changes: ee95e171a SPIGOT-7737: Add separate TreeType.MEGA_PINE 0dae4c62c Fix spawn egg equality check and copy constructor ab59e847c Fix spawn eggs with no entity creating invalid stacks and disconnect creative clients 3b6093b28 SPIGOT-7736: Creative spawn egg use loses components c6b4d5a87 SPIGOT-7731: Spawn eggs cannot have damage 340ccd57f SPIGOT-7735: Fix serialization of player heads with note block sound fd2f41834 SPIGOT-7734: Can't register a custom advancement using unsafe() 02456e2a5 PR-1413: Add force option to Player#spawnParticle 6a61f38b2 SPIGOT-7680: Per-world weather command 58c41cebb PR-1409: Add methods to get players seeing specific chunks 16c976797 PR-1412: Fix shipwreck loot tables not being set for BlockTransformers 7189ba636 PR-1360: Add Material#isCompostable and Material#getCompostChance 900384556 SPIGOT-7676: Enforce locale parameter in toLowerCase and toUpperCase method calls and always use root locale bdb40c5f1 Increase outdated build delay d6607c7dd SPIGOT-7675: Fix FoodComponent config deserialization b148ed332 PR-1406: Fix incorrect assumption of Fireball having constant speed 3ec31ca75 PR-1405: Add a tool component to ItemMeta 5d7d675b9 PR-1404: Add PotionEffectTypeCategory to distinguish between beneficial and harmful effects 960827981 PR-1403, SPIGOT-4288, SPIGOT-6202: Add material rerouting in preparation for the switch to ItemType and BlockType 94e44ec93 PR-1401: Add a config option to accept old keys in registry get calls a43701920 PR-1402: Fix ChunkSnapshot#isSectionEmpty() is always false 87d0a3368 SPIGOT-7668: Move NONE Registry updater to FieldRename to avoid some class loader issues 2ea1e7ac2 PR-1399: Fix regression preventing positive .setDamage value from causing knockback for 0 damage events ba2d49d21 Increase outdated build delay Spigot Changes: fcd94e21 Rebuild patches 342f4939 SPIGOT-7661: Add experimental unload-frozen-chunks option
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public Set<String> activeCompatibilities = Collections.emptySet();
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+ public static Exception excessiveVelEx; // Paper - Velocity warnings
static {
ConfigurationSerialization.registerClass(CraftOfflinePlayer.class);
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
2024-10-22 20:04:31 +02:00
index ea27931d01c1f3c721b2f7ec12d41ea843fa158a..0bec53dc1be4aa997be9f03bc3cde30d22cc8160 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -132,10 +132,40 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
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public void setVelocity(Vector velocity) {
Preconditions.checkArgument(velocity != null, "velocity");
velocity.checkFinite();
+ // Paper start - Warn server owners when plugins try to set super high velocities
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+ if (!(this instanceof org.bukkit.entity.Projectile || this instanceof org.bukkit.entity.Minecart) && isUnsafeVelocity(velocity)) {
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+ CraftServer.excessiveVelEx = new Exception("Excessive velocity set detected: tried to set velocity of entity " + entity.getScoreboardName() + " id #" + getEntityId() + " to (" + velocity.getX() + "," + velocity.getY() + "," + velocity.getZ() + ").");
+ }
+ // Paper end
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this.entity.setDeltaMovement(CraftVector.toNMS(velocity));
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this.entity.hurtMarked = true;
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}
+ // Paper start
+ /**
+ * Checks if the given velocity is not necessarily safe in all situations.
+ * This function returning true does not mean the velocity is dangerous or to be avoided, only that it may be
+ * a detriment to performance on the server.
+ *
+ * It is not to be used as a hard rule of any sort.
+ * Paper only uses it to warn server owners in watchdog crashes.
+ *
+ * @param vel incoming velocity to check
+ * @return if the velocity has the potential to be a performance detriment
+ */
+ private static boolean isUnsafeVelocity(Vector vel) {
+ final double x = vel.getX();
+ final double y = vel.getY();
+ final double z = vel.getZ();
+
+ if (x > 4 || x < -4 || y > 4 || y < -4 || z > 4 || z < -4) {
+ return true;
+ }
+
+ return false;
+ }
+ // Paper end
+
@Override
public double getHeight() {
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return this.getHandle().getBbHeight();
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diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
2024-04-24 03:25:14 +02:00
index e086765dec32241bc5a77afcf072c77a40c6d785..35c90aaee30980610d168c01cbe9abfe04331cb8 100644
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--- a/src/main/java/org/spigotmc/WatchdogThread.java
+++ b/src/main/java/org/spigotmc/WatchdogThread.java
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@@ -81,6 +81,17 @@ public class WatchdogThread extends Thread
log.log( Level.SEVERE, "near " + net.minecraft.world.level.Level.lastPhysicsProblem );
}
//
+ // Paper start - Warn in watchdog if an excessive velocity was ever set
+ if (org.bukkit.craftbukkit.CraftServer.excessiveVelEx != null) {
+ log.log(Level.SEVERE, "------------------------------");
+ log.log(Level.SEVERE, "During the run of the server, a plugin set an excessive velocity on an entity");
+ log.log(Level.SEVERE, "This may be the cause of the issue, or it may be entirely unrelated");
+ log.log(Level.SEVERE, org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getMessage());
+ for (StackTraceElement stack : org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getStackTrace()) {
+ log.log( Level.SEVERE, "\t\t" + stack );
+ }
+ }
+ // Paper end
log.log( Level.SEVERE, "------------------------------" );
log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );