For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Tobias_Neumeyer's avatar
Tobias_Neumeyer
Icon for Nimbostratus rankNimbostratus
Jun 29, 2009

iRule / uri parameter manipulation

Hi,     Sorry, but I need some help from some experts again.     I'm trying to write an iRule which modifies a post request to the server.   This is the example request. ...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jun 29, 2009
Hi Tobias,

Something like this? 

 
 when HTTP_REQUEST { 
  
     Check if path ends with /searchresults.aspx 
    if {[string tolower [HTTP::path]] ends_with "/searchresults.aspx"}{ 
  
        Rewrite URI for u=http:// to u=https:// 
       HTTP::uri [string map -nocase {u=http:// to u=https://} [HTTP::uri] 
  
       log local0. "[IP::client_addr]:[TCP::client_port]: Updated query string to [HTTP::query]" 
    } 
 }

I'm assuming there won't be any other scenarios where a parameter ends with u and starts with http://. I suppose you could parse the actual value for an actual parameter named "u" using [URI::query [HTTP::uri] u], replace http:// with https:// and then replace the original value with the updated one. But that seems like a log of unnecessary overhead.

Aaron