R – Get MXML and ActionScript Classes out of swf

actionscriptapache-flexflashmxml

Hi there I want to know how secure Flex is. Is there a possibility to generate the source out of the swf-file? I mean for example if I have my Actionscript and MXML files and compile them to a swf, can I get the source back out of the swf file?

With kind regards

Sebastian

Best Answer

Yes, it's possible using a swf decompiler. They're not perfect and won't always produce pretty code but it is possible.

That means you should not store secrets, like usernames/passwords inside your swf. You also should never trust the swf to calculate important values. For instance, if you were making a bank application, calculate interest on the server and not the client. Or if you're playing a game, don't let the client make any important decisions about the outcome of the game.

If you are in the US, your best defense against this is Copyright law. If you find someone copying your work sending a DMCA takedown notice is a fairly easy thing to do.

Related Solutions

R – Dynamic loading and compilation of MXML/AS at runtime

I think what you want to do is achieved by modules in Flex. You can't send MXML or .as to the flex application as it doesn't have a compiler to change them into binary executable code. So the way to do this is prepare separate application parts, which aren't downloaded with the main app but can be loaded to it later, called modules.

A blog post about flex modules: sujitreddyg.wordpress.com

If you don't want to compile modules before deploying them to the server but would rather put mxml code there (PHP style) you would need to install the Flex Module for Apache (the name module here is the same as flex modules by coincidence, it's an unrelated thing).

R – In ActionScript, fill stage with external SWF

Use the resize event from the stage object and each time the resize event is fired resize the content according to that:

stage.addEventListener(Event.RESIZE, onResize);

public function onResize(e:Event):void{
 swfContent.width=stage.stageWidth;
 swfContent.height=stage.stageHeight;
}

Best Answer

Related Solutions

R – Dynamic loading and compilation of MXML/AS at runtime

R – In ActionScript, fill stage with external SWF

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