--- ../work/decompile-8eb82bde//net/minecraft/server/PortalCreator.java	2014-11-28 17:43:43.341707430 +0000
+++ src/main/java/net/minecraft/server/PortalCreator.java	2014-11-28 17:38:22.000000000 +0000
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import org.bukkit.event.world.PortalCreateEvent; // CraftBukkit
+
 public class PortalCreator {
 
     private final World a;
@@ -10,6 +12,7 @@
     private BlockPosition f;
     private int g;
     private int h;
+    java.util.Collection<org.bukkit.block.Block> blocks = new java.util.HashSet<org.bukkit.block.Block>(); // CraftBukkit - add field
 
     public PortalCreator(World world, BlockPosition blockposition, EnumAxis enumaxis) {
         this.a = world;
@@ -60,6 +63,10 @@
     }
 
     protected int a() {
+        // CraftBukkit start
+        this.blocks.clear();
+        org.bukkit.World bworld = this.a.getWorld();
+        // CraftBukkit end
         int i;
 
         label56:
@@ -80,11 +87,21 @@
                     block = this.a.getType(blockposition.shift(this.d)).getBlock();
                     if (block != Blocks.OBSIDIAN) {
                         break label56;
+                        // CraftBukkit start - add the block to our list
+                    } else {
+                        BlockPosition pos = blockposition.shift(this.d);
+                        blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                        // CraftBukkit end
                     }
                 } else if (i == this.h - 1) {
                     block = this.a.getType(blockposition.shift(this.c)).getBlock();
                     if (block != Blocks.OBSIDIAN) {
                         break label56;
+                        // CraftBukkit start - add the block to our list
+                    } else {
+                        BlockPosition pos = blockposition.shift(this.c);
+                        blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                        // CraftBukkit end
                     }
                 }
             }
@@ -94,6 +111,11 @@
             if (this.a.getType(this.f.shift(this.c, i).up(this.g)).getBlock() != Blocks.OBSIDIAN) {
                 this.g = 0;
                 break;
+                // CraftBukkit start - add the block to our list
+            } else {
+                BlockPosition pos = this.f.shift(this.c, i).up(this.g);
+                blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                // CraftBukkit end
             }
         }
 
@@ -115,15 +137,36 @@
         return this.f != null && this.h >= 2 && this.h <= 21 && this.g >= 3 && this.g <= 21;
     }
 
-    public void c() {
+    // CraftBukkit start - return boolean
+    public boolean c() {
+        org.bukkit.World bworld = this.a.getWorld();
+
+        // Copy below for loop
         for (int i = 0; i < this.h; ++i) {
             BlockPosition blockposition = this.f.shift(this.c, i);
 
             for (int j = 0; j < this.g; ++j) {
-                this.a.setTypeAndData(blockposition.up(j), Blocks.PORTAL.getBlockData().set(BlockPortal.AXIS, this.b), 2);
+                BlockPosition pos = blockposition.up(j);
+                blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
             }
         }
 
+        PortalCreateEvent event = new PortalCreateEvent(blocks, bworld, PortalCreateEvent.CreateReason.FIRE);
+        this.a.getServer().getPluginManager().callEvent(event);
+
+        if (event.isCancelled()) {
+            return false;
+        }
+        // CraftBukkit end
+        for (int i = 0; i < this.h; ++i) {
+            BlockPosition blockposition = this.f.shift(this.c, i);
+
+            for (int j = 0; j < this.g; ++j) {
+                this.a.setTypeAndData(blockposition.up(j), Blocks.PORTAL.getBlockData().set(BlockPortal.AXIS, this.b), 2);
+            }
+        }
+        
+        return true; // Craft Bukkit
     }
 
     public static int a(PortalCreator portalcreator) {