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idealo_security's avatar
idealo_security
Icon for Altostratus rankAltostratus
Mar 15, 2017
Solved

iRule to block paths is not working properly after decoding HTTP::uri

Hi folks, I was trying to generate an iRule which should take the URL, decode it, normalize the path portion and save it for later use in the following iRules. But unfortunately, I wasn't able to pro...
iRules
LTM
security
  • idealo_security's avatar
    idealo_security
    Mar 17, 2017

    Solution is found: The error was in not writing the basename back to the 

    HTTP:path
    variable:

    when HTTP_REQUEST priority 400 {
 this part is taken from F5s DevCentral
   set tmpUri [HTTP::uri]
   set uri [URI::decode $tmpUri]

   while { $uri ne $tmpUri } {
     set tmpUri $uri
     set uri [URI::decode $tmpUri]
   }
    set tmpPath "[URI::path $uri][URI::basename $uri]"
    HTTP::path $tmpPath 
}
Vijay_E's avatar
Vijay_E
Icon for Cirrus rankCirrus
Mar 15, 2017

Have you tried using log local0. statement within the iRule in order to check what the incoming URI and the decoded version look like ? This might help to understand where the error exists.