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ArlindT's avatar
ArlindT
Icon for Altocumulus rankAltocumulus
May 12, 2023

F5 Policy using replace with TCL

Hi,

 

i'm trying to to the following job:

when someone try to browse to ictservice.it/some_text/etc

i want the policy to add the string ICTDesktop int the path -> ictservice.it/ICTDesktop/some_text/etc

and only after forward the traffic to the Pool.

Possibly 'ICTDesktop' to be hiden

How can i do this without irule, but using only TCL or also without TCL?

thanks

Arlind

security
  • ArlindT's avatar
    ArlindT
    May 22, 2023

    solved as tcl[HTTP::uri "/ICTDesktop[HTTP::uri]"]

    ps: also tcl[HTTP::path "/ICTDesktop[HTTP::path]"] works

  • Paulius's avatar
    Paulius
    Icon for MVP rankMVP
    May 12, 2023

    ArlindT This might do what you want, this is also assuming I understood the situation.

    when HTTP_REQUEST priority 500 {

    if {[HTTP::host] == "ictservice.it"} {
        if {[[string tolower [HTTP::uri]] == "/some_text/etc"} {
            HTTP::uri [string map {"/some_text/etc" "/ICTDesktop/some_text/etc"}[HTTP::uri]]
            pool POOL_your_pool
        }
    }

}
    • ArlindT's avatar
      ArlindT
      Icon for Altocumulus rankAltocumulus
      May 13, 2023

      Paulius 

      thanks for the support,

      the challenging thing is this: some_text/etc is a random part, i don't know it before.

      I want something like this:

      tcl:[string map {random_uri "/ICTdesktop"+random_uri} [HTTP::uri]]

      so it adds /ICTdesktop before the random_uri with a tcl implementation.

    • ArlindT's avatar
      ArlindT
      Icon for Altocumulus rankAltocumulus
      May 13, 2023

      i was thinking something like that

       

      tcl:[
      set old_path [HTTP::path]
      set new_path /ICTdesktop${old_path}
      string map [list "$old_path" "$new_path"] [HTTP::uri]
      ]

      • Paulius's avatar
        Paulius
        Icon for MVP rankMVP
        May 13, 2023

        ArlindT I don't believe this would work well with a string map because a string map works off of a static value being changed to another static value. What is the reason behind having to insert the "/ICTdesktop" into the path? This might be something that is better taken care of on the server side and letting the client see the path rather than attempting to hide it from the client.

  • ArlindT's avatar
    ArlindT
    Icon for Altocumulus rankAltocumulus
    May 22, 2023

    solved as tcl[HTTP::uri "/ICTDesktop[HTTP::uri]"]

    ps: also tcl[HTTP::path "/ICTDesktop[HTTP::path]"] works