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6e71f41536
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 CraftBukkit Changes: 65247583f SPIGOT-7857: Improve ItemMeta block data deserialization 05d80500d SPIGOT-7857: Fix spurious internal NBT tag when deserializing BlockStateMeta cebb58e9a SPIGOT-7804: Fix written book serialization efcdd5d38 SPIGOT-7794: Cancelling InventoryItemMoveEvent destroys items b568ba572 SPIGOT-7789: Fix NPE in CraftMetaFirework applyToItem f057cf449 Remove outdated build delay Spigot Changes: f6a48054 SPIGOT-7835: Fix issue with custom hopper settings bb63b137 Rebuild patches e1142b4d Rebuild patches
87 lines
6.0 KiB
Diff
87 lines
6.0 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: Sun, 17 May 2020 23:47:33 -0700
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Subject: [PATCH] Fix for large move vectors crashing server
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Check movement distance also based on current position.
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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 965e4843e4f7ef013420669f67a85f0a46c3d4c9..b0b48b9156ce3289f69b90e60b5aac6be6125303 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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@@ -492,9 +492,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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float prevYaw = this.player.getYRot();
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float prevPitch = this.player.getXRot();
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// CraftBukkit end
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- double d0 = entity.getX();
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- double d1 = entity.getY();
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- double d2 = entity.getZ();
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+ double d0 = entity.getX();final double fromX = d0; // Paper - OBFHELPER
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+ double d1 = entity.getY();final double fromY = d1; // Paper - OBFHELPER
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+ double d2 = entity.getZ();final double fromZ = d2; // Paper - OBFHELPER
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double d3 = ServerGamePacketListenerImpl.clampHorizontal(packet.getX()); final double toX = d3; // Paper - OBFHELPER
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double d4 = ServerGamePacketListenerImpl.clampVertical(packet.getY()); final double toY = d4; // Paper - OBFHELPER
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double d5 = ServerGamePacketListenerImpl.clampHorizontal(packet.getZ()); final double toZ = d5; // Paper - OBFHELPER
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@@ -504,7 +504,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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double d7 = d4 - this.vehicleFirstGoodY;
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double d8 = d5 - this.vehicleFirstGoodZ;
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double d9 = entity.getDeltaMovement().lengthSqr();
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- double d10 = d6 * d6 + d7 * d7 + d8 * d8;
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+ // Paper start - fix large move vectors killing the server
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+ double currDeltaX = toX - fromX;
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+ double currDeltaY = toY - fromY;
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+ double currDeltaZ = toZ - fromZ;
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+ double d10 = Math.max(d6 * d6 + d7 * d7 + d8 * d8, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1);
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+ double otherFieldX = d3 - this.vehicleLastGoodX;
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+ double otherFieldY = d4 - this.vehicleLastGoodY - 1.0E-6D;
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+ double otherFieldZ = d5 - this.vehicleLastGoodZ;
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+ d10 = Math.max(d10, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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// CraftBukkit start - handle custom speeds and skipped ticks
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this.allowedPlayerTicks += (System.currentTimeMillis() / 50) - this.lastTick;
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@@ -550,9 +559,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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boolean flag = worldserver.noCollision(entity, entity.getBoundingBox().deflate(0.0625D));
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- d6 = d3 - this.vehicleLastGoodX;
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- d7 = d4 - this.vehicleLastGoodY - 1.0E-6D;
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- d8 = d5 - this.vehicleLastGoodZ;
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+ d6 = d3 - this.vehicleLastGoodX; // Paper - diff on change, used for checking large move vectors above
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+ d7 = d4 - this.vehicleLastGoodY - 1.0E-6D; // Paper - diff on change, used for checking large move vectors above
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+ d8 = d5 - this.vehicleLastGoodZ; // Paper - diff on change, used for checking large move vectors above
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boolean flag1 = entity.verticalCollisionBelow;
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if (entity instanceof LivingEntity) {
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@@ -1257,7 +1266,16 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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double d7 = d1 - this.firstGoodY;
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double d8 = d2 - this.firstGoodZ;
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double d9 = this.player.getDeltaMovement().lengthSqr();
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- double d10 = d6 * d6 + d7 * d7 + d8 * d8;
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+ // Paper start - fix large move vectors killing the server
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+ double currDeltaX = toX - prevX;
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+ double currDeltaY = toY - prevY;
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+ double currDeltaZ = toZ - prevZ;
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+ double d10 = Math.max(d6 * d6 + d7 * d7 + d8 * d8, (currDeltaX * currDeltaX + currDeltaY * currDeltaY + currDeltaZ * currDeltaZ) - 1);
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+ double otherFieldX = d0 - this.lastGoodX;
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+ double otherFieldY = d1 - this.lastGoodY;
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+ double otherFieldZ = d2 - this.lastGoodZ;
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+ d10 = Math.max(d10, (otherFieldX * otherFieldX + otherFieldY * otherFieldY + otherFieldZ * otherFieldZ) - 1);
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+ // Paper end - fix large move vectors killing the server
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if (this.player.isSleeping()) {
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if (d10 > 1.0D) {
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@@ -1313,9 +1331,9 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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AABB axisalignedbb = this.player.getBoundingBox();
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- d6 = d0 - this.lastGoodX;
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- d7 = d1 - this.lastGoodY;
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- d8 = d2 - this.lastGoodZ;
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+ d6 = d0 - this.lastGoodX; // Paper - diff on change, used for checking large move vectors above
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+ d7 = d1 - this.lastGoodY; // Paper - diff on change, used for checking large move vectors above
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+ d8 = d2 - this.lastGoodZ; // Paper - diff on change, used for checking large move vectors above
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boolean flag1 = d7 > 0.0D;
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if (this.player.onGround() && !packet.isOnGround() && flag1) {
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