CO2_CORE_DLL (C# Library)

[CptSky]

I decided to implement a big part of my knowledge in a library. At the start, I wanted to make a C library, but as mostly all the server use C# and because I don't want to work too much on it, I decided to make it in C#.

The library is constructed like the .net framework. Often, you'll just have to change System to CO2_CORE_DLL to get some similar class/goal.

The library is based on the version 5017 of CO2, but it may work on older or newer client. It also use a lot of pointer, but there is often a managed equivalent.

What is implemented yet:
CO2_CORE_DLL
- Ini: INI wrapper. Still using the WinAPI.
- Kernel: Kernel of the library. Contains memory management, etc. (memcpy/memset/malloc/free/srand/rand/assert)
- BigInteger: Chew Keong TAN BigInteger implementation
- MSRandom: Microsoft C Random implementation. (srand/rand)
- MathExt: A mathematic class that implement a thread-safe random.
- MyString: Extensions to the String class.
- MyStream: Extensions to the Stream class.
- Queue: Saint's queue class. Still not worked on.

CO2_CORE_DLL.IO
- AutoAllot: Binary / Custom Text support (not fully working for text)
- ItemType: Custom Binary / Text support
- LevelExp: Binary / Custom Text support
- MagicType: Binary / Text support

- ChatLog: Binary / Custom Text support
- WDF: Windsoul Data File, fully supported
- NetDragonDatPkg: NetDragon Data Package (TPI/TPD), partially supported
- DNP: DawnPack, partially supported

- EFFE (DBC): Binary / Text support [3DEffect]
- EMOI (DBC): Binary / Text support [EmotionIco]
- MATR (DBC): Binary / Text support [Material]
- MESH (DBC): Binary / Text support [Armet, Armor, Head, Misc, Mount, Weapon]
- ROPT (DBC): Binary / Text support [RolePart]
- RSDB [32bits] (DBC): Binary / Text support [3DEffectObj, 3DObj, 3DTexture, Sound]
- RSDB [64bits] (DBC): Binary / Text support [3DMotion, ArmetMotion, ArmorMotion, HeadMotion, MiscMotion, MountMotion, WeaponMotion]
- SIMO (DBC): Binary / Text support [3DSimpleObj]

CO2_CORE_DLL.Map
- MapManager: Loads all DMap from the GameMap.dat file and handles dynamic maps with Link().
- GameMap: A DMap representation with all the cells and their data.

CO2_CORE_DLL.Net
- Msg: Basic class for packets. Work with structure and packet writer.

CO2_CORE_DLL.Net.Sockets
- ServerSocket: Server socket class to create a server using TCP/IPv4.
- NetworkClient: Client class used by the server.
- ClientSocket: Client socket class to create a client using TCP/IPv4.
- Event: Network events.

CO2_CORE_DLL.Security.Cryptography
- Blowfish: Blowfish Cipher Feedback (CFB64)
- CAST5: CAST-128 Cipher Feedback (CFB64)
- COCAC: Conquer Online Client Asymmetric Cipher
- COFAC: Conquer Online File Asymmetric Cipher
- CORC5: Conquer Online Rivest Cipher 5
- COSAC: Conquer Online Server Asymmetric Cipher
- DiffieHellman: Diffie-Hellman Key Exchange.

Special thanks to Sparkie, Hybrid, Saint & high6 for all their contributions in the community.

The project is hosted in a SVN. The source is given with pre-compiled assembly. Also, there is some examples on how to implement it.

Please keep the paternity of the class! Never say that it's your own code.

[CptSky]

During the weekend or maybe the next week, I should have time to finish my WDF implementation and my decryptor for the chat log files.

[Y u k i]

Id fix the MagicType reader. (Maybe others aswell O.o)

Key already added issue on loading.

You might wanna add a if(!Collection.ContainsKey(ID)) xD

But overall, its a really cool ressource!

[CptSky]

Originally Posted by Y u k i

Id fix the MagicType reader. (Maybe others aswell O.o)

Key already added issue on loading.

You might wanna add a if(!Collection.ContainsKey(ID)) xD

But overall, its a really cool ressource!

You have two identical entry, you shouldn't. But yes, I will add a verification. Thanks.

[CptSky]

New revision available!

CO2_CORE_DLL v1.0.0 (REV-6) new features and fixed bugs (from REV-5) :

1.  Add the support of the ChatLog files.
2.  Add the support of the Windsoul Data File packages.
3.  Add an extension to the String class to get a pointer.
4.  Add an implementation of the memset function in the Kernel.
5.  Fix the problem of redondant key in the MagicType class.

January 18th, 2012

Also, I added the list of the files contained by the WDF packages in the example folder. The lists contain approximatively 96-98% of all the files. It is made from all the link in the client, and some algorithms to predict possibilities. It is enough to rebuilt these packages.

[CptSky]

New revision!

CO2_CORE_DLL v1.0.0 (REV-8) new features and fixed bugs (from REV-7) :

1.  Finish the implementation of the WDF files.

January 25th, 2012

CO2_CORE_DLL v1.0.0 (REV-7) new features and fixed bugs (from REV-6) :

1.  Add the support of the EMOI (DBC) files. [EmotionIco]
2.  Add the support of the MATR (DBC) files. [Material]
3.  Add the support of the ItemType files.

January 22th, 2012

So, I started implementing DBC files, but I faced a problem... Fixed size buffer can only be primitive type, so I'll need to rework the implementation. Not a major problem.

For the DBC, they are implemented in a separate namespace, with the identifier as name. As I know people will not necessarily know which one is used by the file, I made some wrapper... For example, Material will implement all MATR functions.

For the WDF implementation. Everything is implemented. It is possible, to pack a folder, get data, add an entry, delete an entry, update an entry... The last three possibilities aren't really "safe" implementation. They may corrupt the file if badly used, but eh, people aren't stupid?

Have fun! And if you have proposition for priorities in file implementation, you can suggest!

[CptSky]

CO2_CORE_DLL v1.0.0 (REV-9) new features and fixed bugs (from REV-8) :

1.  Add the support of Blowfish Cipher Feedback (CFB64) algorithm.
2.  Add the support of the Diffie-Hellman key exchange algorithm.
3.  Add an implementation of BigInteger.
4.  Add an implementation of the C assertion.
5.  Add the support of the MESH (DBC) files. [Armet, Armor, Head, Misc, Mount, Weapon]

February 22th, 2012

The DH implementation may be a bit slow... Actually, it is due to the BigInteger implementation. The MESH implementation is REALLY slow when reading from a plain text file.

Oh! And, I added a little example of how the DH exchange work.

[Kiyono]

The emotionico.dbc converter doesn't seem to work. I attached the failed file too.
What happens is that when converting .txt -> .dbc the file gets filled with the Hoho entry.

[CptSky]

Originally Posted by Kiyono

The emotionico.dbc converter doesn't seem to work. I attached the failed file too.
What happens is that when converting .txt -> .dbc the file gets filled with the Hoho entry.

An error of 'i' I'll fix that when I'll be at home.

N.B. New revision!

CO2_CORE_DLL v1.0.0 (REV-10) new features and fixed bugs (from REV-9) :

1.  Fix the MATR implementation. (SaveToDat)
2.  Fix the EMOI implementation. (SaveToDat)
3.  Add the support of the EFFE (DBC) files. [3DEffect]

February 23th, 2012

Like the MESH implementation, the EFFE implementation is really slow on LoadFromTxt due the over-utilisation of the WinAPI with the Ini class... I started a new Ini class, but that is not a priority for me.

[CptSky]

CO2_CORE_DLL v1.0.0 (REV-11) new features and fixed bugs (from REV-10) :

1.  Adapt the MagicType, ItemType and LevelExp implementations to work like a Dictionary/List to be used as a database.
2.  Add a MathExt class that implement a thread-safe random.
3.  Add the support of the SIMO (DBC) files. [3DSimpleObj]
4.  Add the support of the ROPT (DBC) files. [RolePart]
5.  Add the support of the RSDB [32bits] (DBC) files. [3DEffectObj, 3DObj, Sound]
6.  Add the support of the RSDB [64bits] (DBC) files. [3DMotion, ArmetMotion, ArmorMotion, HeadMotion, MiscMotion, MountMotion, WeaponMotion]
7.  Fix the COFAC implementation where the encrypt/decrypt functions where inversed.

March 12th, 2012

So, now, all the DBC files are implemented. The project is now a VS '10 project... And I added a zip that contains the rev11 for people who don't use SVN.

[2slam]

2 left [3Dtexture,weapon]
thanks for ur great efforts

[CptSky]

Originally Posted by 2slam

2 left [3Dtexture,weapon]
thanks for ur great efforts

3DTexture is a RSDB (32bits), Weapon is a MESH.

[2slam]

waiting for a release for that dbc editor

[nTL3fTy]

Why implement the thread-safe random as a few static methods inside MathExt? It's just as easy (and cleaner) to create a non-static class that is derived from Random and overrides the calls:

    public class SafeRandom : Random
    {
        private object _syncRoot;

        public object SyncRoot
        {
            get
            {
                if (_syncRoot == null)
                {
                    Interlocked.CompareExchange<object>(ref _syncRoot, new object(), null);
                }

                return _syncRoot;
            }
        }

        protected override double Sample()
        {
            lock (SyncRoot)
            {
                return base.Sample();
            }
        }

        public override int Next()
        {
            lock (SyncRoot)
            {
                return base.Next();
            }
        }

        public override int Next(int maxValue)
        {
            lock (SyncRoot)
            {
                return base.Next(maxValue);
            }
        }

        public override int Next(int minValue, int maxValue)
        {
            lock (SyncRoot)
            {
                return base.Next(minValue, maxValue);
            }
        }

        public override void NextBytes(byte[] buffer)
        {
            lock (SyncRoot)
            {
                base.NextBytes(buffer);
            }
        }

        public override double NextDouble()
        {
            lock (SyncRoot)
            {
                return base.NextDouble();
            }
        }
    }

[Kiyono]

For those wondering where the dbc converter went, I moved it to the tools section as it is not private server only but a general tool.