From d27fa43120dba613528545f5eab2bf662d8d3c6b Mon Sep 17 00:00:00 2001
From: bwhitn <brian.m.whitney@outlook.com>
Date: Thu, 8 Jun 2017 07:23:11 -0700
Subject: [PATCH] Add conversions for from/to Windows Filetime to UNIX Epoch.
 Decimal.js is used to prevent rounding errors during conversion.

---
 src/core/config/OperationConfig.js | 14 +++++++++++
 src/core/operations/DateTime.js    | 37 ++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js
index 5fd5a9ee..346ca6a7 100755
--- a/src/core/config/OperationConfig.js
+++ b/src/core/config/OperationConfig.js
@@ -2261,6 +2261,20 @@ const OperationConfig = {
             }
         ]
     },
+    "From Windows Filetime To UNIX":{
+        description: "Converts a Windows Filetime timestamp to a datetime format",
+        run: DateTime.runFromFiletimeToUnix,
+        inputType: "string",
+        outputType: "string",
+        args: []
+    },
+    "To Windows Filetime From UNIX":{
+        description: "Parses a datetime string in UTC and returns the corresponding Windows Filetime timestamp",
+        run: DateTime.runToFiletimeFromUnix,
+        inputType: "string",
+        outputType: "string",
+        args: []
+    },
     "Translate DateTime Format": {
         description: "Parses a datetime string in one format and re-writes it in another.<br><br>Run with no input to see the relevant format string examples.",
         run: DateTime.runTranslateFormat,
diff --git a/src/core/operations/DateTime.js b/src/core/operations/DateTime.js
index 523206b2..18fa3194 100755
--- a/src/core/operations/DateTime.js
+++ b/src/core/operations/DateTime.js
@@ -1,3 +1,5 @@
+import Decimal from 'decimal.js';
+
 /**
  * Date and time operations.
  *
@@ -78,6 +80,41 @@ const DateTime = {
     },
 
 
+    /**
+     * Converts a Windows FILETIME to Unix Epoch time.
+     *
+     * @param {string} input
+     * @param {Object[]} args (not used)
+     * @returns {string}
+     */
+    runFromFiletimeToUnix: function(input, args) {
+        input = new Decimal(input);
+        input = input.sub(116444736000000000).div(10000000);
+        if(input.gte(0) && input.lt(Math.pow(2,31))){
+            return input.toString();
+        } else {
+            throw "Date " + input + " is not a valid date";
+        }
+    },
+
+
+    /**
+     * Converts a Unix Epoch time to Windows FILETIME.
+     *
+     * @param {string} input
+     * @param {Object[]} args (not used)
+     * @returns {string}
+     */
+    runToFiletimeFromUnix: function(input, args) {
+        input = new Decimal(input);
+        if(input.gte(0) && input.lt(Math.pow(2,31))){
+            return input.mul(10000000).add(116444736000000000).toHex();
+        } else {
+            throw "Date " + input + " is not a valid date";
+        }
+    },
+
+
     /**
      * @constant
      * @default