From be2080259ec9ae7d64945fc5640188ec4b773ba6 Mon Sep 17 00:00:00 2001
From: Kyle Parrish <github@arnydo.com>
Date: Wed, 2 Oct 2019 09:57:50 -0400
Subject: [PATCH 1/4] Add Fang URL to categories

---
 src/core/config/Categories.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json
index 94f7fd30..18fc19ff 100755
--- a/src/core/config/Categories.json
+++ b/src/core/config/Categories.json
@@ -183,6 +183,7 @@
             "Encode NetBIOS Name",
             "Decode NetBIOS Name",
             "Defang URL",
+            "Fang URL",
             "Defang IP Addresses"
         ]
     },

From cd15a8c406726bf06d55b879d271ac3f79b3ba99 Mon Sep 17 00:00:00 2001
From: Kyle Parrish <github@arnydo.com>
Date: Wed, 2 Oct 2019 09:58:28 -0400
Subject: [PATCH 2/4] Create FangURL.mjs

---
 src/core/operations/FangURL.mjs | 77 +++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 src/core/operations/FangURL.mjs

diff --git a/src/core/operations/FangURL.mjs b/src/core/operations/FangURL.mjs
new file mode 100644
index 00000000..5badaae7
--- /dev/null
+++ b/src/core/operations/FangURL.mjs
@@ -0,0 +1,77 @@
+/**
+ * @author arnydo [github@arnydo.com]
+ * @copyright Crown Copyright 2019
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+
+/**
+ * FangURL operation
+ */
+class FangURL extends Operation {
+
+    /**
+     * FangURL constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Fang URL";
+        this.module = "Default";
+        this.description = "Takes a 'Defanged' Universal Resource Locator (URL) and 'Fangs' it. Meaning, it removes the alterations (defanged) that render it useless so that it can be used again.";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [
+            {
+                name: "Escape [.]",
+                type: "boolean",
+                value: true
+            },
+            {
+                name: "Escape hxxp",
+                type: "boolean",
+                value: true
+            },
+            {
+                name: "Escape ://",
+                type: "boolean",
+                value: true
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        const [dots, http, slashes] = args;
+
+        input = fangURL(input, dots, http, slashes);
+
+        return input;
+    }
+
+}
+
+
+/**
+ * Defangs a given URL
+ *
+ * @param {string} url
+ * @param {boolean} dots
+ * @param {boolean} http
+ * @param {boolean} slashes
+ * @returns {string}
+ */
+function fangURL(url, dots, http, slashes) {
+    if (dots) url = url.replace(/\[\.\]/g, ".");
+    if (http) url = url.replace(/hxxp/g, "http");
+    if (slashes) url = url.replace(/\[\:\/\/\]/g, "://");
+
+    return url;
+}
+
+export default FangURL;

From 3546ee30a22611f6af16c00532a31eb08fdd2501 Mon Sep 17 00:00:00 2001
From: Kyle Parrish <github@arnydo.com>
Date: Mon, 7 Oct 2019 16:09:22 -0400
Subject: [PATCH 3/4] Update escaped chars

---
 src/core/operations/FangURL.mjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/operations/FangURL.mjs b/src/core/operations/FangURL.mjs
index 5badaae7..7390c1a9 100644
--- a/src/core/operations/FangURL.mjs
+++ b/src/core/operations/FangURL.mjs
@@ -69,7 +69,7 @@ class FangURL extends Operation {
 function fangURL(url, dots, http, slashes) {
     if (dots) url = url.replace(/\[\.\]/g, ".");
     if (http) url = url.replace(/hxxp/g, "http");
-    if (slashes) url = url.replace(/\[\:\/\/\]/g, "://");
+    if (slashes) url = url.replace(/[://]/g, "://");
 
     return url;
 }

From 2784978eb5088a5e1c21102680ad0ba90fa99e51 Mon Sep 17 00:00:00 2001
From: a3957273 <89583054+a3957273@users.noreply.github.com>
Date: Sat, 30 Mar 2024 14:20:28 +0000
Subject: [PATCH 4/4] Fix slash regular expression bug

---
 src/core/operations/FangURL.mjs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/core/operations/FangURL.mjs b/src/core/operations/FangURL.mjs
index 7390c1a9..93e01770 100644
--- a/src/core/operations/FangURL.mjs
+++ b/src/core/operations/FangURL.mjs
@@ -24,17 +24,17 @@ class FangURL extends Operation {
         this.outputType = "string";
         this.args = [
             {
-                name: "Escape [.]",
+                name: "Restore [.]",
                 type: "boolean",
                 value: true
             },
             {
-                name: "Escape hxxp",
+                name: "Restore hxxp",
                 type: "boolean",
                 value: true
             },
             {
-                name: "Escape ://",
+                name: "Restore ://",
                 type: "boolean",
                 value: true
             }
@@ -69,7 +69,7 @@ class FangURL extends Operation {
 function fangURL(url, dots, http, slashes) {
     if (dots) url = url.replace(/\[\.\]/g, ".");
     if (http) url = url.replace(/hxxp/g, "http");
-    if (slashes) url = url.replace(/[://]/g, "://");
+    if (slashes) url = url.replace(/\[:\/\/\]/g, "://");
 
     return url;
 }