NimbostratusIrule with Regex's
Hi all,
I'm new to this forum so be nice :) hahaha..
Just playing around to setup a IRule to rewrite a request URL to a server. What needs to be done is that the client style get request should be something like get /internet/chevvy/impala/2009 and the server style should be like /internet/iets.asp/merk=chevy&type=impala&model=2009.
So i created something like this which works like a charm:
when HTTP_REQUEST {
set uri [HTTP::uri]
regexp {/internet/(.*)/(.*)/(.*)$} $uri -> m1 m2 m3
log local0. "regexp: m1=$m1, m2=$m2, m3=$m3"
log local0. "$uri"
set fields [split $uri "/"]
log local0. "split: m1=[lindex $fields 2], m2=[lindex $fields 3], m3=[lindex $fields 4]"
HTTP::uri "/iets.asp\?merk=${m1}&model=${m2}&type=${m3}"
log local0. "new URI: [HTTP::uri]"
}
However, the client should also be able just to acces /internet/chevvy without anything behing it, so i tried to repeat the above into:
when HTTP_REQUEST {
if { [HTTP::uri] matches_regex "^/internet/\w$ " } {
set uri [HTTP::uri]
regexp {/internet/(.*)$} $uri -> m1
log local0. "regexp: m1=$m1"
log local0. "$uri"
set fields [split $uri "/"]
log local0. "split: m1=[lindex $fields 2]"
HTTP::uri "/iets.asp\?merk=${m1}"
log local0. "new URI: [HTTP::uri]"
}
if { [HTTP::uri] matches_regex {/internet/\w/\w$ }} {
set uri [HTTP::uri]
regexp {/internet/(.*)/(.*)/(.*)$} $uri -> m1 m2
log local0. "regexp: m1=$m1, m2=$m2"
log local0. "$uri"
set fields [split $uri "/"]
log local0. "split: m1=[lindex $fields 2], m2=[lindex $fields 3],"
HTTP::uri "/iets.asp\?merk=${m1}&model=${m2}"
log local0. "new URI: [HTTP::uri]"
}
if { [HTTP::uri] matches_regex {/internet/\w/\w/\w$ }} {
set uri [HTTP::uri]
regexp {/internet/(.*)/(.*)/(.*)$} $uri -> m1 m2 m3
log local0. "regexp: m1=$m1, m2=$m2, m3=$m3"
log local0. "$uri"
set fields [split $uri "/"]
log local0. "split: m1=[lindex $fields 2], m2=[lindex $fields 3], m3=[lindex $fields 4]"
HTTP::uri "/iets.asp\?merk=${m1}&model=${m2}&type=${m3}"
log local0. "new URI: [HTTP::uri]"
}
else {
log local0. "no match on [HTTP::uri]"
}
}
However, it only hits at the no match escape else at the bottom. If i use the hashes () to disable the first IF, just 1 parameter works like a charm, same for the second and third IF statements.
I'm loosing it here. Running on v11.1. Should be almost there :).
Your help is appriciated!
Pascal
