fix(GriefDefender): invalidate mask on claim change (#2903)

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/regions/GriefDefenderFeature.java

@@ -3,7 +3,9 @@ package com.fastasyncworldedit.bukkit.regions;
 import com.fastasyncworldedit.core.regions.FaweMask;
 import com.griefdefender.api.GriefDefender;
 import com.griefdefender.api.claim.Claim;
+import com.griefdefender.api.claim.ClaimManager;
 import com.griefdefender.api.claim.TrustTypes;
+import com.griefdefender.lib.flowpowered.math.vector.Vector3i;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.internal.util.LogManagerCompat;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -17,8 +19,8 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
 
     private static final Logger LOGGER = LogManagerCompat.getLogger();
 
-    public GriefDefenderFeature(final Plugin GriefDefenderPlugin) {
-        super(GriefDefenderPlugin.getName());
+    public GriefDefenderFeature(final Plugin plugin) {
+        super(plugin.getName());
         LOGGER.info("Plugin 'GriefDefender' found. Using it now.");
     }
 
@@ -44,9 +46,14 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
                 );
                 return new FaweMask(new CuboidRegion(pos1, pos2)) {
 
+                    private final int[] bounds = new int[]{
+                            pos1.x(), pos1.y(), pos1.z(),
+                            pos2.x(), pos2.y(), pos2.z()
+                    };
+
                     @Override
                     public boolean isValid(com.sk89q.worldedit.entity.Player wePlayer, MaskType type) {
-                        return isAllowed(player, claim, type);
+                        return validateClaimAgainstCache(claim, bounds) && isAllowed(player, claim, type);
                     }
                 };
             }
@@ -54,4 +61,20 @@ public class GriefDefenderFeature extends BukkitMaskManager implements Listener
         return null;
     }
 
+    private static boolean validateClaimAgainstCache(Claim claim, int[] bounds) {
+        Vector3i min = claim.getLesserBoundaryCorner();
+        Vector3i max = claim.getGreaterBoundaryCorner();
+        if (min.getX() != bounds[0] || min.getY() != bounds[1] || min.getZ() != bounds[2]) {
+            return false;
+        }
+        if (max.getX() != bounds[3] || max.getY() != bounds[4] || max.getZ() != bounds[5]) {
+            return false;
+        }
+        final ClaimManager manager = GriefDefender.getCore().getClaimManager(claim.getWorldUniqueId());
+        if (manager == null) {
+            return false;
+        }
+        return manager.getClaimByUUID(claim.getUniqueId()) != null;
+    }
+
 }