Forum Discussion

Josh_Abaire's avatar
Josh_Abaire
Icon for Nimbostratus rankNimbostratus
Oct 23, 2012

Modify one part of URI Path

I need to change one portion of a URI path based on the value of another portion. For example:

 

 

http://www.example.com/dir1/dir2/file.ext?arg1=val1&arg2=val2&arg3

 

If dir2 then change dir1 to dir5.

 

HTTP::respond 302 Location http://www.example.com/dir5/dir2/file.ext?arg1=val1&arg2=val2&arg3

 

 

I can pull out the 2nd part:

 

 

set path2 [URI::path [HTTP::uri] 2 2]

 

I can check it against the list of values in a data-group and supply the new value but I don’t know how to modify only one portion of the URI.

 

I'm looking for a command like the set command, only rewrite URI:path portion based on an index.

 

 

Thanks!

 

 

 

application delivery
dev
devops
iRules

4 Replies

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Oct 24, 2012
    is this applicable? 

    [root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.79:80
   ip protocol 6
   rules myrule
   profiles {
      http {}
      tcp {}
   }
}
[root@ve10:Active] config  b class foo_class list
class foo_class {
   "/dir2/" { "/dir1/ /dir5/" }
}
[root@ve10:Active] config  b rule myrule list
rule myrule {
   when HTTP_REQUEST {
   if { [class match -- [HTTP::uri] contains foo_class] } {
      set uri [string map [class match -value [HTTP::uri] contains foo_class] [HTTP::uri]]
      HTTP::redirect "http://[HTTP::host]$uri"
   }
}
}

[root@ve10:Active] config  curl -I "http://172.28.19.79/dir1/dir2/file.ext?arg1=val1&arg2=val2&arg3"
HTTP/1.0 302 Found
Location: http://172.28.19.79/dir5/dir2/file.ext?arg1=val1&arg2=val2&arg3
Server: BigIP
Connection: Keep-Alive
Content-Length: 0

[root@ve10:Active] config  curl -I "http://172.28.19.79/somethingelse/file.ext?arg1=val1&arg2=val2&arg3"
HTTP/1.1 404 Not Found
Date: Wed, 24 Oct 2012 00:18:48 GMT
Server: Apache/2.2.3 (CentOS)
Connection: close
Content-Type: text/html; charset=iso-8859-1
  • Josh_Abaire's avatar
    Josh_Abaire
    Icon for Nimbostratus rankNimbostratus
    Oct 24, 2012
    Sting map! That's exactly what I needed! Thank you.

     

     

    Now I'm having problem with adding records to the data-group (tmsh v10.2). Any format or syntax I seem to use tells me there is a problem. Even ? marking my way through, it seems I am doing it right, but it is still rejected. I was able to add records through the GUI but regular use of the GUI is not practical. Even showing the data-group after adding a record from the GUI and using that format yields syntax errors. Can someone provide the correct tmsh command syntax to create the above class or add records to it?

     

     

    Thanks again!
  • Josh_Abaire's avatar
    Josh_Abaire
    Icon for Nimbostratus rankNimbostratus
    Oct 24, 2012
    It's a known tmsh bug in v10. I'm not as dumb as I look!

     

     

    http://support.f5.com/kb/en-us/solutions/public/12000/900/sol12999.html
  • Josh_Abaire's avatar
    Josh_Abaire
    Icon for Nimbostratus rankNimbostratus
    Oct 25, 2012
    Also, FYI nitass. Your solution got me where I needed, but would result in an endless 302 redirect. Since it never changes /dir2/ it will always match and attempt to redirect. You have to match both:

     

     

    "dir1/dir2/" { "/dir1/ /dir5/" }