PaperMC/nms-patches/ItemFlintAndSteel.patch

--- a/net/minecraft/server/ItemFlintAndSteel.java
+++ b/net/minecraft/server/ItemFlintAndSteel.java
@@ -1,5 +1,10 @@
 package net.minecraft.server;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.block.CraftBlockState;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+// CraftBukkit end
+
 public class ItemFlintAndSteel extends Item {
 
     public ItemFlintAndSteel() {
@@ -9,13 +14,31 @@
     }
 
     public EnumInteractionResult a(ItemStack itemstack, EntityHuman entityhuman, World world, BlockPosition blockposition, EnumHand enumhand, EnumDirection enumdirection, float f, float f1, float f2) {
+        BlockPosition clicked = blockposition; // CraftBukkit
         blockposition = blockposition.shift(enumdirection);
         if (!entityhuman.a(blockposition, enumdirection, itemstack)) {
             return EnumInteractionResult.FAIL;
         } else {
             if (world.getType(blockposition).getMaterial() == Material.AIR) {
+                // CraftBukkit start - Store the clicked block
+                if (CraftEventFactory.callBlockIgniteEvent(world, blockposition.getX(), blockposition.getY(), blockposition.getZ(), org.bukkit.event.block.BlockIgniteEvent.IgniteCause.FLINT_AND_STEEL, entityhuman).isCancelled()) {
+                    itemstack.damage(1, entityhuman);
+                    return EnumInteractionResult.PASS;
+                }
+
+                CraftBlockState blockState = CraftBlockState.getBlockState(world, blockposition.getX(), blockposition.getY(), blockposition.getZ());
+                // CraftBukkit end
                 world.a(entityhuman, blockposition, SoundEffects.bw, SoundCategory.BLOCKS, 1.0F, ItemFlintAndSteel.i.nextFloat() * 0.4F + 0.8F);
                 world.setTypeAndData(blockposition, Blocks.FIRE.getBlockData(), 11);
+
+                // CraftBukkit start
+                org.bukkit.event.block.BlockPlaceEvent placeEvent = CraftEventFactory.callBlockPlaceEvent(world, entityhuman, enumhand, blockState, clicked.getX(), clicked.getY(), clicked.getZ());
+
+                if (placeEvent.isCancelled() || !placeEvent.canBuild()) {
+                    placeEvent.getBlockPlaced().setTypeIdAndData(0, (byte) 0, false);
+                    return EnumInteractionResult.PASS;
+                }
+                // CraftBukkit end
             }
 
             itemstack.damage(1, entityhuman);