From 065fe05795c868bebcce9cfcb6f3f25f49e6dfdf Mon Sep 17 00:00:00 2001
From: Tahir Akhlaq <xdemolish@hotmail.com>
Date: Wed, 27 Jul 2016 17:23:52 +0100
Subject: [PATCH 1/2] fixed import script, improved db import times, fixed
 logging and warp command  (should be 5000% legit now) - improved import times
 for gamedata tables (there's prolly other innodb tables too, i didnt check
 though) - fixed issue where player wouldnt be readded to zone on warping if
 destination wasnt valid - corrected typo in warp command lua description -
 added logger for lua cause i forgot to last time

---
 FFXIVClassic Map Server/CommandProcessor.cs |  2 +-
 FFXIVClassic Map Server/NLog.config         |  1 +
 FFXIVClassic Map Server/WorldManager.cs     | 15 ++++++++++++---
 data/scripts/commands/gm/warp.lua           |  2 +-
 sql/gamedata_achievements.sql               |  4 ++++
 sql/gamedata_actor_appearance.sql           |  4 ++++
 sql/gamedata_actor_class.sql                |  4 ++++
 sql/gamedata_items.sql                      |  4 ++++
 sql/gamedata_items_accessory.sql            |  4 ++++
 sql/gamedata_items_armor.sql                |  2 ++
 sql/gamedata_items_equipment.sql            |  4 ++++
 sql/gamedata_items_graphics.sql             |  4 ++++
 sql/gamedata_items_weapon.sql               |  4 ++++
 sql/import.sh                               | 18 +++++++++++-------
 14 files changed, 60 insertions(+), 12 deletions(-)

diff --git a/FFXIVClassic Map Server/CommandProcessor.cs b/FFXIVClassic Map Server/CommandProcessor.cs
index 6cebd662..50985884 100644
--- a/FFXIVClassic Map Server/CommandProcessor.cs	
+++ b/FFXIVClassic Map Server/CommandProcessor.cs	
@@ -88,7 +88,7 @@ namespace FFXIVClassic_Map_Server
             if (cmd.Any())
             {
                 // if client isnt null, take player to be the player actor
-                var player = client.GetActor();
+                var player = client?.GetActor();
 
                 if (cmd.Equals("help"))
                 {
diff --git a/FFXIVClassic Map Server/NLog.config b/FFXIVClassic Map Server/NLog.config
index cad2eea9..a59613ac 100644
--- a/FFXIVClassic Map Server/NLog.config	
+++ b/FFXIVClassic Map Server/NLog.config	
@@ -53,6 +53,7 @@
     <!-- add your logging rules here -->
     <logger name='*' minlevel='Trace' writeTo='file' />
     <logger name='FFXIVClassic_Map_Server.Program' minlevel='Trace' writeTo='console' />
+    <logger name='FFXIVClassic_Map_Server.lua.*' minlevel='Trace' writeTo='console' />
     <logger name='FFXIVClassic_Map_Server.packets.*' minlevel='Debug' writeTo='packets' />
     <!--
     Write all events with minimal level of Debug (So Debug, Info, Warn, Error and Fatal, but not Trace)  to "f"
diff --git a/FFXIVClassic Map Server/WorldManager.cs b/FFXIVClassic Map Server/WorldManager.cs
index f0c87fde..2c1fcfa5 100644
--- a/FFXIVClassic Map Server/WorldManager.cs	
+++ b/FFXIVClassic Map Server/WorldManager.cs	
@@ -360,12 +360,10 @@ namespace FFXIVClassic_Map_Server
         //Moves actor to new zone, and sends packets to spawn at the given coords.
         public void DoZoneChange(Player player, uint destinationZoneId, string destinationPrivateArea, byte spawnType, float spawnX, float spawnY, float spawnZ, float spawnRotation)
         {
-            Area oldZone;
-
+            Area oldZone = player.zone;
             //Remove player from currentZone if transfer else it's login
             if (player.zone != null)
             {
-                oldZone = player.zone;
                 oldZone.RemoveActorFromZone(player);
             }
 
@@ -376,9 +374,20 @@ namespace FFXIVClassic_Map_Server
                 newArea = GetZone(destinationZoneId);
             else
                 newArea = GetZone(destinationZoneId).GetPrivateArea(destinationPrivateArea, 0);
+
             //This server does not contain that zoneId
             if (newArea == null)
+            {
+                if (oldZone != null)
+                {
+                    oldZone.AddActorToZone(player);
+                }
+
+                var message = "WorldManager.DoZoneChange: unable to change areas, new area is not valid.";
+                player.SendMessage(SendMessagePacket.MESSAGE_TYPE_SYSTEM, "[Debug]", message);
+                Program.Log.Debug(message);
                 return;
+            }
 
             newArea.AddActorToZone(player);
 
diff --git a/data/scripts/commands/gm/warp.lua b/data/scripts/commands/gm/warp.lua
index 4fa2c2b9..4652a0c6 100644
--- a/data/scripts/commands/gm/warp.lua
+++ b/data/scripts/commands/gm/warp.lua
@@ -7,7 +7,7 @@ properties = {
 [[
 <zone> |
 <zone> <x> <y> <z> |
-<x> <y> <z> <zone> <privateArea> <target name>.
+<zone> <x> <y> <z> <privateArea> <target name>.
 ]],
 }
 
diff --git a/sql/gamedata_achievements.sql b/sql/gamedata_achievements.sql
index 8faa28a1..e8832429 100644
--- a/sql/gamedata_achievements.sql
+++ b/sql/gamedata_achievements.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_achievements`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_achievements`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -795,4 +797,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:49
diff --git a/sql/gamedata_actor_appearance.sql b/sql/gamedata_actor_appearance.sql
index 546d03f3..1eafae41 100644
--- a/sql/gamedata_actor_appearance.sql
+++ b/sql/gamedata_actor_appearance.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_actor_appearance`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_actor_appearance`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -7916,4 +7918,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:50
diff --git a/sql/gamedata_actor_class.sql b/sql/gamedata_actor_class.sql
index 7348e548..6f7104ce 100644
--- a/sql/gamedata_actor_class.sql
+++ b/sql/gamedata_actor_class.sql
@@ -8,6 +8,8 @@ Date: 6/21/2016 10:49:37 PM
 */
 
 SET FOREIGN_KEY_CHECKS=0;
+SET autocommit = 0;
+
 -- ----------------------------
 -- Table structure for gamedata_actor_class
 -- ----------------------------
@@ -8006,3 +8008,5 @@ INSERT INTO `gamedata_actor_class` VALUES ('9220405', '', '2', null);
 INSERT INTO `gamedata_actor_class` VALUES ('9220406', '', '2', null);
 INSERT INTO `gamedata_actor_class` VALUES ('9220407', '', '2', null);
 INSERT INTO `gamedata_actor_class` VALUES ('9220408', '', '2', null);
+
+COMMIT;
diff --git a/sql/gamedata_items.sql b/sql/gamedata_items.sql
index 4137f198..1d3a36e3 100644
--- a/sql/gamedata_items.sql
+++ b/sql/gamedata_items.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -8476,4 +8478,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:51
diff --git a/sql/gamedata_items_accessory.sql b/sql/gamedata_items_accessory.sql
index 62eb06f0..a29c2d7c 100644
--- a/sql/gamedata_items_accessory.sql
+++ b/sql/gamedata_items_accessory.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items_accessory`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items_accessory`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -326,4 +328,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:51
diff --git a/sql/gamedata_items_armor.sql b/sql/gamedata_items_armor.sql
index 8d951a83..9b6a3f81 100644
--- a/sql/gamedata_items_armor.sql
+++ b/sql/gamedata_items_armor.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items_armor`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items_armor`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
diff --git a/sql/gamedata_items_equipment.sql b/sql/gamedata_items_equipment.sql
index b16b83a1..80c9cef2 100644
--- a/sql/gamedata_items_equipment.sql
+++ b/sql/gamedata_items_equipment.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items_equipment`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items_equipment`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -4946,4 +4948,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:52
diff --git a/sql/gamedata_items_graphics.sql b/sql/gamedata_items_graphics.sql
index dfc5ac32..e857767f 100644
--- a/sql/gamedata_items_graphics.sql
+++ b/sql/gamedata_items_graphics.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items_graphics`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items_graphics`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -144,4 +146,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:52
diff --git a/sql/gamedata_items_weapon.sql b/sql/gamedata_items_weapon.sql
index 7aca2c7f..ea5d07bd 100644
--- a/sql/gamedata_items_weapon.sql
+++ b/sql/gamedata_items_weapon.sql
@@ -19,6 +19,8 @@
 -- Table structure for table `gamedata_items_weapon`
 --
 
+SET autocommit = 0;
+
 DROP TABLE IF EXISTS `gamedata_items_weapon`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
@@ -1230,4 +1232,6 @@ UNLOCK TABLES;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+COMMIT;
+
 -- Dump completed on 2016-06-07 22:54:52
diff --git a/sql/import.sh b/sql/import.sh
index 4022144c..a26f768b 100644
--- a/sql/import.sh
+++ b/sql/import.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-IMPORT_PATH=C:/repositories/ffxiv-classic-server/sql/
+IMPORT_PATH="C://coding//repositories//ffxiv related//ffxivclassic//ffxiv-classic-server//sql//"
 USER=root
 PASS=root
 DBNAME=ffxiv_server
@@ -8,14 +8,18 @@ ECHO Creating Database $DBNAME
 mysqladmin -h localhost -u $USER -p$PASS DROP $DBNAME
 
 ECHO Creating Database $DBNAME
-mysqladmin -h localhost -u $USER -p$PASS CREATE $DBNAME
+mysqladmin -h localhost -u $USER -p$PASS CREATE $DBNAME IF NOT EXISTS $DBNAME
 
 ECHO Loading $DBNAME tables into the database
-cd $IMPORT_PATH
-for X in *.sql;
-do 
-	echo Importing $X;
-	"C:\program files\mysql\mysql server 5.7\bin\mysql" $DBNAME -h localhost -u $USER -p$PASS < $X
+sh cd $IMPORT_PATH
+
+for X in '*.sql';
+do
+	for Y in $X
+	do
+		echo Importing $Y;
+		"C:\program files\mysql\mysql server 5.7\bin\mysql" $DBNAME -h localhost -u $USER -p$PASS < $Y
+	done
 done
 
 ECHO Finished!
\ No newline at end of file

From 2233f48719c4ea42aa23432bb532d463abac802d Mon Sep 17 00:00:00 2001
From: Tahir Akhlaq <xdemolish@hotmail.com>
Date: Wed, 3 Aug 2016 16:54:23 +0100
Subject: [PATCH 2/2] note to self: read both files before merging

---
 FFXIVClassic Common Class Lib/Utils.cs | 153 ++++++++++++++++++++++---
 1 file changed, 137 insertions(+), 16 deletions(-)

diff --git a/FFXIVClassic Common Class Lib/Utils.cs b/FFXIVClassic Common Class Lib/Utils.cs
index 12f5f88f..a6479b78 100644
--- a/FFXIVClassic Common Class Lib/Utils.cs	
+++ b/FFXIVClassic Common Class Lib/Utils.cs	
@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Text;
 
 namespace FFXIVClassic.Common
@@ -13,7 +14,7 @@ namespace FFXIVClassic.Common
             for (var i = 0; i < 256; i++)
             {
                 var s = i.ToString("X2");
-                result[i] = s[0] + ((uint) s[1] << 16);
+                result[i] = s[0] + ((uint)s[1] << 16);
             }
             return result;
         }
@@ -28,13 +29,13 @@ namespace FFXIVClassic.Common
             var hexChars = "0123456789ABCDEF".ToCharArray();
 
             var offsetBlock = 8 + 3;
-            var byteBlock = offsetBlock + bytesPerLine*3 + (bytesPerLine - 1)/8 + 2;
+            var byteBlock = offsetBlock + bytesPerLine * 3 + (bytesPerLine - 1) / 8 + 2;
             var lineLength = byteBlock + bytesPerLine + Environment.NewLine.Length;
 
             var line = (new string(' ', lineLength - Environment.NewLine.Length) + Environment.NewLine).ToCharArray();
-            var numLines = (bytes.Length + bytesPerLine - 1)/bytesPerLine;
+            var numLines = (bytes.Length + bytesPerLine - 1) / bytesPerLine;
 
-            var sb = new StringBuilder(numLines*lineLength);
+            var sb = new StringBuilder(numLines * lineLength);
 
             for (var i = 0; i < bytes.Length; i += bytesPerLine)
             {
@@ -70,7 +71,7 @@ namespace FFXIVClassic.Common
                         var by = bytes[i + j];
                         line[hexColumn] = hexChars[(by >> 4) & 0xF];
                         line[hexColumn + 1] = hexChars[by & 0xF];
-                        line[charColumn] = by < 32 ? '.' : (char) by;
+                        line[charColumn] = by < 32 ? '.' : (char)by;
                     }
 
                     hexColumn += 3;
@@ -89,7 +90,7 @@ namespace FFXIVClassic.Common
             var currentTime = DateTime.Now;
             var zuluTime = currentTime.ToUniversalTime();
             var unixEpoch = new DateTime(1970, 1, 1);
-            unixTimeStamp = (uint) zuluTime.Subtract(unixEpoch).TotalSeconds;
+            unixTimeStamp = (uint)zuluTime.Subtract(unixEpoch).TotalSeconds;
 
             return unixTimeStamp;
         }
@@ -100,7 +101,7 @@ namespace FFXIVClassic.Common
             var currentTime = DateTime.Now;
             var zuluTime = currentTime.ToUniversalTime();
             var unixEpoch = new DateTime(1970, 1, 1);
-            unixTimeStamp = (ulong) zuluTime.Subtract(unixEpoch).TotalMilliseconds;
+            unixTimeStamp = (ulong)zuluTime.Subtract(unixEpoch).TotalMilliseconds;
 
             return unixTimeStamp;
         }
@@ -127,7 +128,7 @@ namespace FFXIVClassic.Common
 
         public static int SwapEndian(int input)
         {
-            var inputAsUint = (uint) input;
+            var inputAsUint = (uint)input;
 
             input = (int)
                 (((inputAsUint >> 24) & 0xff) |
@@ -151,7 +152,7 @@ namespace FFXIVClassic.Common
 
             // Initialize the hash to a 'random' value
 
-            var h = seed ^ (uint) len;
+            var h = seed ^ (uint)len;
 
             // Mix 4 bytes at a time into the hash
 
@@ -160,7 +161,7 @@ namespace FFXIVClassic.Common
             {
                 h *= m;
 
-                var k = (uint) BitConverter.ToInt32(data, dataIndex);
+                var k = (uint)BitConverter.ToInt32(data, dataIndex);
                 k = ((k >> 24) & 0xff) | // move byte 3 to byte 0
                     ((k << 8) & 0xff0000) | // move byte 1 to byte 2
                     ((k >> 8) & 0xff00) | // move byte 2 to byte 1
@@ -180,10 +181,10 @@ namespace FFXIVClassic.Common
             switch (len)
             {
                 case 3:
-                    h ^= (uint) data[0] << 16;
+                    h ^= (uint)data[0] << 16;
                     goto case 2;
                 case 2:
-                    h ^= (uint) data[len - 2] << 8;
+                    h ^= (uint)data[len - 2] << 8;
                     goto case 1;
                 case 1:
                     h ^= data[len - 1];
@@ -204,7 +205,7 @@ namespace FFXIVClassic.Common
 
         public static byte[] ConvertBoolArrayToBinaryStream(bool[] array)
         {
-            var data = new byte[array.Length/8 + (array.Length%8 != 0 ? 1 : 0)];
+            var data = new byte[array.Length / 8 + (array.Length % 8 != 0 ? 1 : 0)];
 
             var dataCounter = 0;
             for (var i = 0; i < array.Length; i += 8)
@@ -213,7 +214,7 @@ namespace FFXIVClassic.Common
                 {
                     if (i + bitCount >= array.Length)
                         break;
-                    data[dataCounter] = (byte) (((array[i + bitCount] ? 1 : 0) << 7 - bitCount) | data[dataCounter]);
+                    data[dataCounter] = (byte)(((array[i + bitCount] ? 1 : 0) << 7 - bitCount) | data[dataCounter]);
                 }
                 dataCounter++;
             }
@@ -225,10 +226,130 @@ namespace FFXIVClassic.Common
         {
             var lookup = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 
-            var secondDigit = lookup.Substring((int) Math.Floor(number/(double) lookup.Length), 1);
-            var firstDigit = lookup.Substring(number%lookup.Length, 1);
+            var secondDigit = lookup.Substring((int)Math.Floor(number / (double)lookup.Length), 1);
+            var firstDigit = lookup.Substring(number % lookup.Length, 1);
 
             return secondDigit + firstDigit;
         }
+
+
+        public static string FFXIVLoginStringDecodeBinary(string path)
+        {
+            Console.OutputEncoding = System.Text.Encoding.UTF8;
+            byte[] data = File.ReadAllBytes(path);
+            int offset = 0x5405a;
+            //int offset = 0x5425d;
+            //int offset = 0x53ea0;
+            while (true)
+            {
+                string result = "";
+                uint key = (uint)data[offset + 0] << 8 | data[offset + 1];
+                uint key2 = data[offset + 2];
+                key = RotateRight(key, 1) & 0xFFFF;
+                key -= 0x22AF;
+                key &= 0xFFFF;
+                key2 = key2 ^ key;
+                key = RotateRight(key, 1) & 0xFFFF;
+                key -= 0x22AF;
+                key &= 0xFFFF;
+                uint finalKey = key;
+                key = data[offset + 3];
+                uint count = (key2 & 0xFF) << 8;
+                key = key ^ finalKey;
+                key &= 0xFF;
+                count |= key;
+
+                int count2 = 0;
+                while (count != 0)
+                {
+                    uint encrypted = data[offset + 4 + count2];
+                    finalKey = RotateRight(finalKey, 1) & 0xFFFF;
+                    finalKey -= 0x22AF;
+                    finalKey &= 0xFFFF;
+                    encrypted = encrypted ^ (finalKey & 0xFF);
+
+                    result += (char)encrypted;
+                    count--;
+                    count2++;
+                }
+
+                offset += 4 + count2;
+            }
+        }
+
+        public static string FFXIVLoginStringDecode(byte[] data)
+        {
+            string result = "";
+            uint key = (uint)data[0] << 8 | data[1];
+            uint key2 = data[2];
+            key = RotateRight(key, 1) & 0xFFFF;
+            key -= 0x22AF;
+            key2 = key2 ^ key;
+            key = RotateRight(key, 1) & 0xFFFF;
+            key -= 0x22AF;
+            uint finalKey = key;
+            key = data[3];
+            uint count = (key2 & 0xFF) << 8;
+            key = key ^ finalKey;
+            key &= 0xFF;
+            count |= key;
+
+            int count2 = 0;
+            while (count != 0)
+            {
+                uint encrypted = data[4 + count2];
+                finalKey = RotateRight(finalKey, 1) & 0xFFFF;
+                finalKey -= 0x22AF;
+                encrypted = encrypted ^ (finalKey & 0xFF);
+                result += (char)encrypted;
+                count--;
+                count2++;
+            }
+
+            return result;
+        }
+
+        public static byte[] FFXIVLoginStringEncode(uint key, string text)
+        {
+            key = key & 0xFFFF;
+
+            uint count = 0;
+            byte[] asciiBytes = Encoding.ASCII.GetBytes(text);
+            byte[] result = new byte[4 + text.Length];
+            for (count = 0; count < text.Length; count++)
+            {
+                result[result.Length - count - 1] = (byte)(asciiBytes[asciiBytes.Length - count - 1] ^ (key & 0xFF));
+                key += 0x22AF;
+                key &= 0xFFFF;
+                key = RotateLeft(key, 1) & 0xFFFF;
+            }
+
+            count = count ^ key;
+            result[3] = (byte)(count & 0xFF);
+
+            key += 0x22AF & 0xFFFF;
+            key = RotateLeft(key, 1) & 0xFFFF;
+
+            result[2] = (byte)(key & 0xFF);
+
+            key += 0x22AF & 0xFFFF;
+            key = RotateLeft(key, 1) & 0xFFFF;
+
+
+            result[1] = (byte)(key & 0xFF);
+            result[0] = (byte)((key >> 8) & 0xFF);
+
+            return result;
+        }
+
+        public static uint RotateLeft(uint value, int bits)
+        {
+            return (value << bits) | (value >> (16 - bits));
+        }
+
+        public static uint RotateRight(uint value, int bits)
+        {
+            return (value >> bits) | (value << (16 - bits));
+        }
     }
 }
\ No newline at end of file