How does the emulator communicate with the swfs?

[Synt4x]

Hi everybody.

I've been a coder for the best part of 7 years now. PHP is my strongest language and thus I have good knowledge about Object-Orientated Programming. I know a little bit of C#, I picked the basics fairly fast as PHP was strongly influenced by C#.

Anyway, to the point - I want to further develop Plus Emulator and start coding in stuff that's already within the swfs that hasn't been developed yet. I believe this would be the best way to start. However, my biggest problem is I can't find any tutorials or posts explaining how the emulator sends and receives data to the swfs.

My current understanding:

I know that data is transferred over sockets and sent in packets. I believe that packets are used to send information to the swfs which can be used to trigger functions within classes. But how do I know what information to send to the swf? I have decompiled Habbo.swf and took a look at some of the functions that are linked to the packet headers. I.e. the MOTD notification:

ServerPacketHeader.cs

public const int MOTDNotificationMessageComposer = 705;

Habbo.swf

_SafeStr_5698[705] = _SafeStr_3230;

this.addMessageEvent(new _SafeStr_2660(this._SafeStr_10206));

public function _SafeStr_2660(k:Function)
{
     super(k, CallForHelpPendingCallsMessageParser);
}


public function _SafeStr_5423():CallForHelpPendingCallsMessageParser
{
     return ((_SafeStr_5424 as CallForHelpPendingCallsMessageParser));
}

What I don't understand however, is how MOTDNotificationComposer.cs communicates the values necessary to provide the text to the MOTD notification as I don't see where there is a string or integer parameter being required?

public MOTDNotificationComposer(string Message) : base(ServerPacketHeader.MOTDNotificationMessageComposer)
{
     base.WriteInteger(1);
     base.WriteString(Message);
}

Maybe I have the wrong understanding of how this all works, but I'd really like someone to be able to help me out with all of this, I want to be able to start developing emulators more.

Thank you, any light shed on this situation would be greatly appreciated.

 

[Damien]

public function _SafeStr_2660(k:Function)
{
     super(k, CallForHelpPendingCallsMessageParser);
}

With outgoing packets you need to go into the super class
search for:

class CallForHelpPendingCallsMessageParser

and you should find the structure for the packet. int, string, bool ext.
 
Also another thing. I think you're going about searching for structures the wrong way.

Not sure how you went from:
MOTDNotificationMessageComposer

To:
CallForHelpPendingCallsMessageParser

Maybe you're trying to find the structures using the incoming method? Since I see you're searching for "new *class name*".

 

[Synt4x]

With outgoing packets you need to go into the super class
search for:

class CallForHelpPendingCallsMessageParser

and you should find the structure for the packet. int, string, bool ext.
 
Also another thing. I think you're going about searching for structures the wrong way.

Not sure how you went from:
MOTDNotificationMessageComposer

To:
CallForHelpPendingCallsMessageParser

Maybe you're trying to find the structures using the incoming method? Since I see you're searching for "new *class name*".

Yeah, that's exactly how I was trying to find it. I couldn't find any tutorials about outgoing, so I had a fiddle with the tutorial that Sledmore wrote about incoming and see if I could try to work it out myself.

    public class CallForHelpPendingCallsMessageParser implements _SafeStr_2261
    {

        private var _SafeStr_8459:Array;

        public function CallForHelpPendingCallsMessageParser()
        {
            this._SafeStr_8459 = new Array();
            super();
        }

        public function get _SafeStr_8460():Array
        {
            return (this._SafeStr_8459);
        }

        public function get _SafeStr_8461():int
        {
            return (this._SafeStr_8459.length);
        }

        public function flush():Boolean
        {
            this._SafeStr_8459 = new Array();
            return (true);
        }

        public function parse(k:_SafeStr_2699):Boolean
        {
            var _local_3:int;
            var _local_4:Object;
            this._SafeStr_8459 = new Array();
            var _local_2:int = k._SafeStr_5287();
            while (_local_3 < _local_2)
            {
                _local_4 = new Object();
                _local_4.callId = k.readString();
                _local_4.timeStamp = k.readString();
                _local_4.message = k.readString();
                this._SafeStr_8459.push(_local_4);
                _local_3++;
            };
            return (true);
        }
    }

So, with finding that class now - where does it define that it needs an integer and a string? I presume that MOTDNotificationComposer is sending out the CallID and the message, but why not timestamp? Sorry for the mass questions, just trying to get a decent understanding of this. Thanks for the help.

 

[Damien]

Yeah, that's exactly how I was trying to find it. I couldn't find any tutorials about outgoing, so I had a fiddle with the tutorial that Sledmore wrote about incoming and see if I could try to work it out myself.

    public class CallForHelpPendingCallsMessageParser implements _SafeStr_2261
    {

        private var _SafeStr_8459:Array;

        public function CallForHelpPendingCallsMessageParser()
        {
            this._SafeStr_8459 = new Array();
            super();
        }

        public function get _SafeStr_8460():Array
        {
            return (this._SafeStr_8459);
        }

        public function get _SafeStr_8461():int
        {
            return (this._SafeStr_8459.length);
        }

        public function flush():Boolean
        {
            this._SafeStr_8459 = new Array();
            return (true);
        }

        public function parse(k:_SafeStr_2699):Boolean
        {
            var _local_3:int;
            var _local_4:Object;
            this._SafeStr_8459 = new Array();
            var _local_2:int = k._SafeStr_5287();
            while (_local_3 < _local_2)
            {
                _local_4 = new Object();
                _local_4.callId = k.readString();
                _local_4.timeStamp = k.readString();
                _local_4.message = k.readString();
                this._SafeStr_8459.push(_local_4);
                _local_3++;
            };
            return (true);
        }
    }

So, with finding that class now - where does it define that it needs an integer and a string? I presume that MOTDNotificationComposer is sending out the CallID and the message, but why not timestamp? Sorry for the mass questions, just trying to get a decent understanding of this. Thanks for the help.

All the information you need is here:

public function parse(k:_SafeStr_2699):Boolean
        {
            var _local_3:int;
            var _local_4:Object;
            this._SafeStr_8459 = new Array();
            var _local_2:int = k._SafeStr_5287();
            while (_local_3 < _local_2)
            {
                _local_4 = new Object();
                _local_4.callId = k.readString();
                _local_4.timeStamp = k.readString();
                _local_4.message = k.readString();
                this._SafeStr_8459.push(_local_4);
                _local_3++;
            };
            return (true);
        }

But like I said you've gone about it the wrong way and this structure has nothing to do with MOTD. It's for the "CallForHelpPendingCallsMessageParser".

 

[Synt4x]

All the information you need is here:

public function parse(k:_SafeStr_2699):Boolean
        {
            var _local_3:int;
            var _local_4:Object;
            this._SafeStr_8459 = new Array();
            var _local_2:int = k._SafeStr_5287();
            while (_local_3 < _local_2)
            {
                _local_4 = new Object();
                _local_4.callId = k.readString();
                _local_4.timeStamp = k.readString();
                _local_4.message = k.readString();
                this._SafeStr_8459.push(_local_4);
                _local_3++;
            };
            return (true);
        }

But like I said you've gone about it the wrong way and this structure has nothing to do with MOTD. It's for the "CallForHelpPendingCallsMessageParser".

Sorry, not sure what happened there when I was looking up that packet. It was just an error

This should be the right class though, correct?

    public class _SafeStr_3243 implements _SafeStr_2261
    {

        private var _SafeStr_10930:Array;


        public function flush():Boolean
        {
            this._SafeStr_10930 = new Array();
            return (true);
        }

        public function parse(k:_SafeStr_2699):Boolean
        {
            var _local_2:int = k._SafeStr_5287();
            var _local_3:int;
            while (_local_3 < _local_2)
            {
                this._SafeStr_10930.push(k.readString());
                _local_3++;
            };
            return (true);
        }

        public function get messages():Array
        {
            return (this._SafeStr_10930);
        }


    }

Is it pushing the Integer & String to public function parse(k:_SafeStr_2699):Boolean?