Hi All,
I am doing a small project on parsing SWF files and injecting an
actionscript function into the existing SWF file. Iam able to inject the
actionscript byte code into the first frame by creating an action tag block.

The exact objective of the project is to find the different method calls which
inturn opens a url and redirect it to the method which i have injected and do
some modifications and call the same system method call. I tried by passing the
getUrl method call to mine, with the java code which looks as follows

push(target);
push(url);
push(2);
push("myOpenUrl"); - my method
writeCode(CALL_FUNCTION);
writeCode(POP);

(Iam not sure, whether the above given code is correct for a function
invocation, but i did this by analysing the byte code source.)

The actionscript code looks like this,

function myOpenUrl(url, target) {
var targetUrl = 'http://www.yahoo.com';
if (url.indexOf(targetUrl) == -1) {
url = targetUrl + url;
}
getUrl(url, target);
}
This gets successfully written in the output SWF file and when i decompile it,
it is decompiled correctly. But the method invocation is not taking place. Can
anyone tell me what s the mistake i have done in the java code which i had given
above.

Also let me know the correct one to achieve this, if Iam wrong.

Thanks,
Prabakaran Srinivasan.



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