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Craig_Hoss_1781's avatar
Craig_Hoss_1781
Icon for Nimbostratus rankNimbostratus
Jan 12, 2009

Change Case on Append IP iRule

I have a working iRule that appends the IP address on a client request. However, it is case sensitive. The URL must have "login.aspx" in the URL exactly for this to work, but I would like to make it work with "Login.aspx", "LOGIN.aspx", etc. Does anyone know how to change the case of the incoming URL ?

 

 

when HTTP_REQUEST {

 

set client [IP::client_addr]

 

set request [HTTP::uri]

 

if {$request contains "login.aspx" and $request contains "?"}

 

{HTTP::uri "[HTTP::uri]&IPAddress=[IP::client_addr]"}

 

elseif {$request contains "login.aspx"}

 

{HTTP::uri "[HTTP::uri]?IPAddress=[IP::client_addr]"}

 

}

 

 

Thanks.
application delivery
dev
devops
iRules

2 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Jan 12, 2009
    You can use 'string tolower "original_string"' to set a string to lower case. You can eliminate some of the variables as well: 

      
  when HTTP_REQUEST {  
    
      Check if the path, set to lower case, ends with login.aspx  
     if {[string tolower [HTTP::path]] ends_with "login.aspx"}{   
    
         Check if there is a query string  
        if {[string length [HTTP::query]]}{  
    
            Append the IPAddress parameter with the client IP to the existing query string  
           HTTP::uri "[HTTP::uri]&IPAddress=[IP::client_addr]"  
    
        } else {  
    
            Append the IPAddress parameter with the client IP to the path  
           HTTP::uri "[HTTP::path]?IPAddress=[IP::client_addr]"  
        }  
     }  
  }

    For an example URL:

    http://www.example.com:80/path/to/file.ext?param1=value1&param2=value2

    These commands return the following values:

    HTTP::host (Click here) - www.example.com:80

    HTTP::path (Click here) - /path/to/file.ext

    HTTP::query (Click here) - param1=value1&param2=value2

    HTTP::uri (Click here) - /path/to/file.ext?param1=value1&param2=value2

    Aaron