Forum Discussion

Bciesz_171056's avatar
Bciesz_171056
Icon for Cirrus rankCirrus
Jun 01, 2017

iRule for URI/string manipulation

Hi, I need to perform some complex redirections on a VS due to sharepoint migration. Users are reaching my VS using an URL with a specific variable included, like f.ex.:

 

 

I need to extract the object ID (1234 obviously) and push it in new URL:

 

so the objid variable is trasnferred to q variable with OBJECT%1A inserted in the beggining;

 

Also a legacy URL might appear: where 1234 should be treated same as objid

 

Another variation might be a substitution from this: to

 

still I'm not quite sure how to handle such string manipulation in iRule, especially that the lenght of variable q might differ from query to query, and when it is provided in text we can't be sure what it will be exactly...

 

Any help appreciated :)

 

thanks

 

application delivery
irule
irule redirection
iRules
LTM
string manipulation
uri alter

1 Reply

Sort By
  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    Jun 01, 2017

    Hi,

    you can try with this irule:

    when HTTP_REQUEST {
    switch -glob -- [string tolower [HTTP::path]] {
        "/api.dll" {
            set objid [URI::query [HTTP::uri] objid]
            HTTP::respond 301 Location "http://www.newsite.com/sharepoint.aspx?q=OBJECT%1A${objid}&v=look"
        }
        "/api.dll/[0-9][0-9][0-9][0-9]" {
            set objid [URI::basename [HTTP::uri]]
            HTTP::respond 301 Location "http://www.newsite.com/sharepoint.aspx?q=OBJECT%1A${objid}&v=look"
        }
        "/api.dll/*" {
            set objid [URI::basename [HTTP::uri]]
            HTTP::respond 301 Location "http://www.newsite.com/sharepoint.aspc?q=eLearning?v=look"
        }
    }

}