[Kamailio-Users] PCRE / Regex Module

[Iñaki Baz Castillo]

El Viernes, 18 de Septiembre de 2009, Brandon Armstead escribió:
> Hello,
>     I have the following pcre regex method call: 
>
>     pcre_match("$hdr(From)", "(?i)^(restricted|anonymous|private|unknown|
unavailable)")
> 
> to match calls that are sent without a proper ANI in a case-insensitive
> manner, however it does not seem to return true for the following example
> From Header:
> 
> From Header: "Unavailable"
> <sip:Restricted at 192.168.47.68<sip%3ARestricted at 192.168.47.68>
> 
> >;tag=gK07327e23
> 
> Any thoughts / input is appreciated, and as always thank you for your help!

You are using ^ symbol which means that the string MUST START by:
  restricted|anonymous|private|unknown|unavailable

But your string $hdr("From") starts by "Unavailable" (*including* the 
quotation marks so it doesn't match).

If the From URI username is enough (Restricted) you could do:

  pcre_match("$dU", "(?i)^(restricted|anonymous|private|unknown|  
  unavailable)")

If you need to match the Display-Name ("Unavailable") then you must add the 
quotation marks to the regular expression:

  pcre_match("$fn", "(?i)^(\")?(restricted|anonymous|private|unknown|  
  unavailable)(\")?")

Note that I use $fn rather than $hdr("From"), being $fn the From Display-Name:
  http://kamailio.org/dokuwiki/doku.php/pseudovariables:1.5.x#from_display_name



-- 
Iñaki Baz Castillo <ibc at aliax.net>