From 14ce8e6001a04a434590d2cca787da8dc603ada1 Mon Sep 17 00:00:00 2001
From: Derek | QarthO <QarthO@gmail.com>
Date: Sun, 28 Apr 2024 11:57:10 -0400
Subject: [PATCH] Don't allow claims to be made outside of worldborder (#2287)

---
 .../GriefPrevention/DataStore.java            | 40 ++++++++++++++++---
 1 file changed, 34 insertions(+), 6 deletions(-)

diff --git a/src/main/java/me/ryanhamshire/GriefPrevention/DataStore.java b/src/main/java/me/ryanhamshire/GriefPrevention/DataStore.java
index 5f1306d47..1f247378e 100644
--- a/src/main/java/me/ryanhamshire/GriefPrevention/DataStore.java
+++ b/src/main/java/me/ryanhamshire/GriefPrevention/DataStore.java
@@ -915,6 +915,14 @@ synchronized public CreateClaimResult createClaim(World world, int x1, int x2, i
             smally = sanitizeClaimDepth(parent, smally);
         }
 
+        //claims can't be made outside the world border
+        final Location smallerBoundaryCorner = new Location(world, smallx, smally, smallz);
+        final Location greaterBoundaryCorner = new Location(world, bigx, bigy, bigz);
+        if(!world.getWorldBorder().isInside(smallerBoundaryCorner) || !world.getWorldBorder().isInside(greaterBoundaryCorner)){
+            result.succeeded = false;
+            return result;
+        }
+
         //creative mode claims always go to bedrock
         if (GriefPrevention.instance.config_claims_worldModes.get(world) == ClaimsMode.Creative)
         {
@@ -923,8 +931,8 @@ synchronized public CreateClaimResult createClaim(World world, int x1, int x2, i
 
         //create a new claim instance (but don't save it, yet)
         Claim newClaim = new Claim(
-                new Location(world, smallx, smally, smallz),
-                new Location(world, bigx, bigy, bigz),
+                smallerBoundaryCorner,
+                greaterBoundaryCorner,
                 ownerID,
                 new ArrayList<>(),
                 new ArrayList<>(),
@@ -1159,8 +1167,19 @@ void resizeClaimWithChecks(Player player, PlayerData playerData, int newx1, int
         if (playerData.claimResizing.parent == null)
         {
             //measure new claim, apply size rules
-            int newWidth = (Math.abs(newx1 - newx2) + 1);
-            int newHeight = (Math.abs(newz1 - newz2) + 1);
+            int newWidth;
+            int newHeight;
+            try
+            {
+                newWidth = Math.abs(Math.subtractExact(newx1, newx2)) + 1;
+                newHeight = Math.abs(Math.subtractExact(newz1, newz2)) + 1;
+            }
+            catch (ArithmeticException e)
+            {
+                GriefPrevention.sendMessage(player, TextMode.Err, Messages.ResizeClaimInsufficientArea, String.valueOf(GriefPrevention.instance.config_claims_minArea));
+                return;
+            }
+
             boolean smaller = newWidth < playerData.claimResizing.getWidth() || newHeight < playerData.claimResizing.getHeight();
 
             if (!player.hasPermission("griefprevention.adminclaims") && !playerData.claimResizing.isAdminClaim() && smaller)
@@ -1182,8 +1201,17 @@ void resizeClaimWithChecks(Player player, PlayerData playerData, int newx1, int
             //make sure player has enough blocks to make up the difference
             if (!playerData.claimResizing.isAdminClaim() && player.getName().equals(playerData.claimResizing.getOwnerName()))
             {
-                int newArea = newWidth * newHeight;
-                int blocksRemainingAfter = playerData.getRemainingClaimBlocks() + playerData.claimResizing.getArea() - newArea;
+                int newArea;
+                int blocksRemainingAfter;
+                try
+                {
+                    newArea = Math.multiplyExact(newWidth, newHeight);
+                    blocksRemainingAfter = playerData.getRemainingClaimBlocks() + (playerData.claimResizing.getArea() - newArea);
+                }
+                catch (ArithmeticException e)
+                {
+                    blocksRemainingAfter = -1;
+                }
 
                 if (blocksRemainingAfter < 0)
                 {