mirror of https://github.com/PaperMC/Paper.git
92 lines
4.9 KiB
Diff
92 lines
4.9 KiB
Diff
From 5cf2de3b1381af0c32b0cfd020b12ce6d05d47d6 Mon Sep 17 00:00:00 2001
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From: DemonWav <demonwav@gmail.com>
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Date: Sat, 26 Mar 2016 21:36:05 -0500
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Subject: [PATCH] Prevent possible infinite loop in BlockPosition iterator
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diff --git a/src/main/java/net/minecraft/server/BlockPosition.java b/src/main/java/net/minecraft/server/BlockPosition.java
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index 2d56f02..b87c4c6 100644
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--- a/src/main/java/net/minecraft/server/BlockPosition.java
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+++ b/src/main/java/net/minecraft/server/BlockPosition.java
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@@ -139,15 +139,17 @@ public class BlockPosition extends BaseBlockPosition {
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protected BlockPosition a() {
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if (this.b == null) {
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- this.b = blockposition;
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+ this.b = blockposition2; // Paper - use blockposition2 instead of blockposition to prevent infinite loops
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return this.b;
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- } else if (this.b.equals(blockposition1)) {
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+ } else if (this.b.equals(blockposition3)) { // Paper - use blockposition3 instead of blockposition1 to prevent infinite loops
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return (BlockPosition) this.endOfData();
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} else {
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int i = this.b.getX();
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int j = this.b.getY();
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int k = this.b.getZ();
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+ // Paper start - use blockposition2 and blockposition3 to prevent infinite loops
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+ /*
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if (i < blockposition1.getX()) {
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++i;
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} else if (j < blockposition1.getY()) {
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@@ -158,6 +160,18 @@ public class BlockPosition extends BaseBlockPosition {
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j = blockposition.getY();
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++k;
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}
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+ */
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+ if (i < blockposition3.getX()) {
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+ ++i;
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+ } else if (j < blockposition3.getY()) {
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+ i = blockposition2.getX();
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+ ++j;
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+ } else if (k < blockposition3.getZ()) {
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+ i = blockposition2.getX();
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+ j = blockposition2.getY();
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+ ++k;
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+ }
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+ // Paper end
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this.b = new BlockPosition(i, j, k);
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return this.b;
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@@ -187,15 +201,17 @@ public class BlockPosition extends BaseBlockPosition {
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protected BlockPosition.MutableBlockPosition a() {
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if (this.b == null) {
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- this.b = new BlockPosition.MutableBlockPosition(blockposition.getX(), blockposition.getY(), blockposition.getZ());
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+ this.b = new BlockPosition.MutableBlockPosition(blockposition2.getX(), blockposition2.getY(), blockposition2.getZ()); // Paper - use blockposition2 instead of blockposition to prevent infinite loops
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return this.b;
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- } else if (this.b.equals(blockposition1)) {
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+ } else if (this.b.equals(blockposition3)) { // Paper - use blockposition3 instead of blockposition1 to prevent infinite loops
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return (BlockPosition.MutableBlockPosition) this.endOfData();
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} else {
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int i = this.b.getX();
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int j = this.b.getY();
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int k = this.b.getZ();
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+ // Paper start - use blockposition2 and blockposition3 to prevent infinite loops
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+ /*
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if (i < blockposition1.getX()) {
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++i;
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} else if (j < blockposition1.getY()) {
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@@ -206,6 +222,18 @@ public class BlockPosition extends BaseBlockPosition {
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j = blockposition.getY();
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++k;
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}
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+ */
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+ if (i < blockposition3.getX()) {
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+ ++i;
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+ } else if (j < blockposition3.getY()) {
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+ i = blockposition2.getX();
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+ ++j;
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+ } else if (k < blockposition3.getZ()) {
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+ i = blockposition2.getX();
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+ j = blockposition2.getY();
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+ ++k;
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+ }
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+ // Paper end
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// Paper start - modify base position variables
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((BaseBlockPosition) this.b).a = i;
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--
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2.8.0
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