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jQuery - javascript error - cisco web vpn

Answer 1

A:

I am running into this issue as well. It is really messed up for Cisco to just rewrite JS code like that, assuming it'll work for every single code on the web. There are some serious irreversible consequence like scope loss that will screw everything up. Who in their right mind would do that in the name of "security"? And what is preventing us from overriding the JS code they have injected?

pixelfreak 2009-09-11 20:46:27

That is exactly what I had to do to work around the error, override one of their own functions.

hobbyman 2009-09-12 11:16:13

hobbyman, could you elaborate which function you overwrite? They seem to be mangling jQuery in a lot of places, how do you know which one to fix?Thanks!

pixelfreak 2009-09-15 06:31:29

Answer 2

A:

This is what I had to do to fix the problem. I created a JS file in my web project with the following code:

   if ( typeof SegmentHtml != "undefined" ) {
      SegmentHtmlParam.prototype['filter'] = function() {
         var name = null;
         var value = null;
         for (var i = 1; i < this._tokens.length; i++) {
            var token = this._tokens[i];
            if (token.type === ATTR_NAME) {
               name = csco_g_buffer.substring(token.first_index, token.last_index).toUpperCase();
            } else if (token.type === ATTR_VALUE) {
               value = csco_g_buffer.substring(token.first_index, token.last_index);
            };
         };
         var need_processing = false;
         if (ParserClsidName) {
            var tmp = ParserClsidName[this._clsid];
            if (tmp) {
               var proc = tmp[name];
               need_processing = typeof proc != 'undefined';
            };
         };
         /**
         * ERROR ON NEXT LINE: name is null
         */
         if (name!=null && name.toLowerCase() == "csco_proto") {
            this._parent['csco_proto'] = value;
         };
         if (need_processing) { this._parent[name] = value; };
      };    
   };

This is the FIRST javascript file I include in my HTML file.

<script type="text/javascript" src="js/jQueryCiscoKludge.js"></script>

hobbyman 2009-09-23 10:33:32

BTW - I would have not been able to find this bug without the use of the new debugger in IE8. FireBug never caught this error but the IE8 debugger did.

hobbyman 2009-09-23 10:44:58

Answer 3

A:

Hi hobbyman,

Thanks a lot. My jquery code works on vpn now. I agree Firebug didnt detect the error. I will try the IE8 debugger too.Thanks for the tip.

sunny

sunny 2009-10-09 16:20:08

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