.Net DLL security headache

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0 Replies - 441 Views - Last Post: 28 April 2009 - 06:18 AM Rate Topic: -----

#1 ferroariel  Icon User is offline

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.Net DLL security headache

Post icon  Posted 28 April 2009 - 06:18 AM

Hi u all!!!

I have a website, dedicated to beauty products for women, ok? Sometime ago a friend of mine told me "hey! why donīt you send that info through MSN?". I liked that, so I downloaded an autoresponder code from here:


So I simply added this routine to get search results from my site:


public string getSiteSearchResults()
		{   string reader = "";
			string search = "[the received message text goes here]";
			string url = "[the URL of my website search page]?query="+ search;
				WebPermission pWeb = new WebPermission(NetworkAccess.Connect, url);
				SecurityPermission pSec = new SecurityPermission(SecurityPermissionFlag.AllFlags);
				PermissionSet set = new PermissionSet(PermissionState.None);
				HttpWebRequest URLReq = (HttpWebRequest)WebRequest.Create(url);				
				URLReq.Credentials = CredentialCache.DefaultCredentials;
				URLReq.AuthenticationLevel = System.Net.Security.AuthenticationLevel.None;
				URLReq.AllowAutoRedirect = true;
				URLReq.Timeout = 60000;				
				HttpWebResponse URLRes = (HttpWebResponse)URLReq.GetResponse();				
				Encoding enc = Encoding.GetEncoding(1252); 
				StreamReader sStream =   new StreamReader(URLRes.GetResponseStream(), enc);			
				reader = sStream.ReadToEnd();				
			catch (Exception ex)
				reader = ex.Message;
			return (reader);				

So when somebody asks for some product, the addin (working on one of my pcs) do a search on my site, get the results and send īem in response as plain text.

Well, instead of that, all I get is this:

"Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed."

I read about gacutil, regasm, caspol, trust zones, trusted assembly, security zones...... but donīt have a clue where to start to get rid of this thing, really.

Any help is truly appreciated

Txs in adv


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