From a61feb00d1a91e0a62ea23380feef6f75a03c8aa Mon Sep 17 00:00:00 2001
From: Didier Stevens <didier.stevens@gmail.com>
Date: Sun, 25 Dec 2022 12:23:07 +0100
Subject: [PATCH] Operation Change IP Format: added Little Endian format

---
 src/core/operations/ChangeIPFormat.mjs    | 18 ++++++++--
 tests/operations/tests/ChangeIPFormat.mjs | 40 +++++++++++++++++++++++
 2 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/src/core/operations/ChangeIPFormat.mjs b/src/core/operations/ChangeIPFormat.mjs
index c9adc5d8..a7e72708 100644
--- a/src/core/operations/ChangeIPFormat.mjs
+++ b/src/core/operations/ChangeIPFormat.mjs
@@ -29,12 +29,12 @@ class ChangeIPFormat extends Operation {
             {
                 "name": "Input format",
                 "type": "option",
-                "value": ["Dotted Decimal", "Decimal", "Octal", "Hex"]
+                "value": ["Dotted Decimal", "Decimal", "Decimal (Little Endian)", "Octal", "Octal (Little Endian)", "Hex"]
             },
             {
                 "name": "Output format",
                 "type": "option",
-                "value": ["Dotted Decimal", "Decimal", "Octal", "Hex"]
+                "value": ["Dotted Decimal", "Decimal", "Decimal (Little Endian)", "Octal", "Octal (Little Endian)", "Hex"]
             }
         ];
     }
@@ -71,9 +71,15 @@ class ChangeIPFormat extends Operation {
                 case "Decimal":
                     baIp = this.fromNumber(lines[i].toString(), 10);
                     break;
+                case "Decimal (Little Endian)":
+                    baIp = Utils.intToByteArray(parseInt(lines[i].toString(), 10), 4, "little");
+                    break;
                 case "Octal":
                     baIp = this.fromNumber(lines[i].toString(), 8);
                     break;
+                case "Octal (Little Endian)":
+                    baIp = Utils.intToByteArray(parseInt(lines[i].toString(), 8), 4, "little");
+                    break;
                 case "Hex":
                     baIp = fromHex(lines[i]);
                     break;
@@ -98,10 +104,18 @@ class ChangeIPFormat extends Operation {
                     decIp = ((baIp[0] << 24) | (baIp[1] << 16) | (baIp[2] << 8) | baIp[3]) >>> 0;
                     output += decIp.toString() + "\n";
                     break;
+                case "Decimal (Little Endian)":
+                    decIp = Utils.byteArrayToInt(baIp, "little");
+                    output += decIp.toString() + "\n";
+                    break;
                 case "Octal":
                     decIp = ((baIp[0] << 24) | (baIp[1] << 16) | (baIp[2] << 8) | baIp[3]) >>> 0;
                     output += "0" + decIp.toString(8) + "\n";
                     break;
+                case "Octal (Little Endian)":
+                    decIp = Utils.byteArrayToInt(baIp, "little");
+                    output += "0" + decIp.toString(8) + "\n";
+                    break;
                 case "Hex":
                     hexIp = "";
                     for (j = 0; j < baIp.length; j++) {
diff --git a/tests/operations/tests/ChangeIPFormat.mjs b/tests/operations/tests/ChangeIPFormat.mjs
index d92ffb79..26c92124 100644
--- a/tests/operations/tests/ChangeIPFormat.mjs
+++ b/tests/operations/tests/ChangeIPFormat.mjs
@@ -48,5 +48,45 @@ TestRegister.addTests([
                 args: ["Octal", "Decimal"],
             },
         ],
+    }, {
+        name: "Change IP format: Decimal (Little Endian) to Dotted Decimal",
+        input: "16885952",
+        expectedOutput: "192.168.1.1",
+        recipeConfig: [
+            {
+                op: "Change IP format",
+                args: ["Decimal (Little Endian)", "Dotted Decimal"],
+            },
+        ],
+    }, {
+        name: "Change IP format: Dotted Decimal to Decimal (Little Endian)",
+        input: "192.168.1.1",
+        expectedOutput: "16885952",
+        recipeConfig: [
+            {
+                op: "Change IP format",
+                args: ["Dotted Decimal", "Decimal (Little Endian)"],
+            },
+        ],
+    }, {
+        name: "Change IP format: Octal (Little Endian) to Dotted Decimal",
+        input: "0100324300",
+        expectedOutput: "192.168.1.1",
+        recipeConfig: [
+            {
+                op: "Change IP format",
+                args: ["Octal (Little Endian)", "Dotted Decimal"],
+            },
+        ],
+    }, {
+        name: "Change IP format: Dotted Decimal to Octal (Little Endian)",
+        input: "192.168.1.1",
+        expectedOutput: "0100324300",
+        recipeConfig: [
+            {
+                op: "Change IP format",
+                args: ["Dotted Decimal", "Octal (Little Endian)"],
+            },
+        ],
     },
 ]);