URI manipulation and redirect

I had a request a few months ago to do some URI manipulation for redirect. A sample URL would be

 

 

https://www.host.com/506/dept_name/ops/Performance%20Improvement%20Team%20Meerting%20Minutes/2_24_10%20PC.doc

 

 

would be redirected to

 

 

https://dept_name.host.com/ops/Performance%20Improvement%20Team%20Meerting%20Minutes/2_24_10%20PC.doc

 

 

and at that time, I was able to take care of it with the following irule.

 

 

when HTTP_REQUEST {

 

set uri [HTTP::uri]

 

if { ( $uri starts_with "/506/dept_name" ) } {

 

remove the first 15 chars (/506/dept_name) from the URI

 

HTTP::redirect "https://dept_name.host.com[string range $uri 16 end]"

 

}

 

}

 

 

Now I have a similar request for the same website but the string length for dept_name is different. I thought instead of doing this for each department, I will just remove the first 2 directories from the URI list and keep the rest and do a redirect. I am able to parse the URI to get the folder names but I have trouble building back the URI list without the first 2 folders. I used the following to parse the URI

 

 

set depth [URI::path [HTTP::uri] depth]

 

for {set i 1} {$i <= $depth} {incr i} {

 

set dir [URI::path [HTTP::uri] $i $i]

 

log local0. "dir\[$i\]: $dir"

 

}

 

log local0. "Basename: [URI::basename [HTTP::uri]]"

 

 

I need some hints on how I can save the partial URI to do the redirect.