From 161f89c03819860d002a2cb2566f20dba6d7fce8 Mon Sep 17 00:00:00 2001
From: Callum Fraser <callum@callumfraser.me>
Date: Wed, 16 May 2018 21:50:48 +0100
Subject: [PATCH] Ported the TCPIPChecksum operation. Main content has been
 moved to the IP lib file, as it is used in multiple files. Changed the name,
 due to it originally containing a backslash, which caused issues with the
 script.

---
 src/core/operations/TCPIPChecksum.mjs | 40 +++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 src/core/operations/TCPIPChecksum.mjs

diff --git a/src/core/operations/TCPIPChecksum.mjs b/src/core/operations/TCPIPChecksum.mjs
new file mode 100644
index 00000000..e31cb511
--- /dev/null
+++ b/src/core/operations/TCPIPChecksum.mjs
@@ -0,0 +1,40 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import {calculateTCPIPChecksum} from "../lib/Ip";
+
+/**
+ * TCP/IP Checksum operation
+ */
+class TCPIPChecksum extends Operation {
+
+    /**
+     * TCP/IPChecksum constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "TCP/IP Checksum";
+        this.module = "Hashing";
+        this.description = "Calculates the checksum for a TCP (Transport Control Protocol) or IP (Internet Protocol) header from an input of raw bytes.";
+        this.inputType = "byteArray";
+        this.outputType = "string";
+        this.args = [];
+    }
+
+    /**
+     * @param {byteArray} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        return calculateTCPIPChecksum(input);
+    }
+
+}
+
+export default TCPIPChecksum;