From 6fbdcac556cb4b90d897b473a37571c47e9aaf7c Mon Sep 17 00:00:00 2001
From: leen <i@leenzhu.com>
Date: Tue, 24 Oct 2023 13:34:35 +0800
Subject: [PATCH] patterns/ip: Fix payload size when ip header or tcp header
 has options in ip.hexpat (#178)

---
 patterns/ip.hexpat | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/patterns/ip.hexpat b/patterns/ip.hexpat
index a38aff5..9f0599d 100644
--- a/patterns/ip.hexpat
+++ b/patterns/ip.hexpat
@@ -132,7 +132,7 @@ namespace ip {
 			if (flags.data_offset > 5)
 				u8 options[(flags.data_offset - 5) * sizeof(u32)];
 				
-			u8 data[parent.parent.header.total_length - 40];
+			u8 data[parent.parent.header.total_length - parent.parent.header.ihl * 4 - flags.data_offset * 4];
 		};
 	
 	}