Matching wildcards in URI

Hi Martijn,

You can use a regular expression with matches_regex:

when HTTP_REQUEST {
   if { [HTTP::uri] matches_regex "(?i)^\/test\/.*id\=1234" } {
      log local0. "URI matched regex: [HTTP::uri]"
      pool http_pool
   } else {
      log local0. "URI didn't match regex: [HTTP::uri]"
      pool other_pool
   }
}

The regex: (?i)^\/test/\.*id\=1234

is broken down as:

(?i) - case insensitive comparison

^ - asserts that the following token is the first one in the string

\/ - literal forward slash

test - literal

\/ - literal forward slash

.* any number of non-line break characters

id - literal

\= - literal =

1234 - literal

I believe the regex libary is PCRE (Perl Compatible Regular Expression), but someone can correct me if I'm wrong.

Aaron

regex works great, but is a resource hog. You could try:

when HTTP_REQUEST {
  if { ([HTTP::uri] starts_with "/test") and ([HTTP::uri] contains "id=1234") } {
    HTTP::redirect https://your.host.here
    }
}

Hey guys, thanks a lot, this worked great - citizen_elah, can you roll up multiple tests in this? along the lines of

 if { ([HTTP::uri] starts_with "/test") and (([HTTP::uri] contains "id=1234") or ([HTTP::uri] contains "id=4567") or ([HTTP::uri] contains "id=8901")) } {

or would it be bette rto split this up in multiple if statements?

Thanks again,

Martijn

In the case you will have multiple id=xxxx, I'd build a class:

class allowed_ID {
 "1234"
 "4567"
 "8901"
}

Then reference the ID first, but redirect only if the URI begins with /test:

when HTTP_REQUEST {
  if { [matchclass [HTTP::uri] contains "$::allowed_ID"] } {
    if { [HTTP::uri] starts_with "/test" } {
      HTTP::redirect https://your.host.here
    }
  }
}

Might check the syntax on my matchclass against other posts in the forum, I haven't personally used it before.

citizen_elah - that's awesome, thanks!