Bug #81332 [Opn->Nab]: urn: URIs are not validated properly

From: Date: Thu, 05 Aug 2021 07:09:59 +0000
Subject: Bug #81332 [Opn->Nab]: urn: URIs are not validated properly
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-235604@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=81332&edit=1

 ID:                 81332
 Updated by:         requinix@php.net
 Reported by:        tamas dot nagy0404 at outlook dot com
 Summary:            urn: URIs are not validated properly
-Status:             Open
+Status:             Not a bug
 Type:               Bug
 Package:            URL related
 Operating System:   all
 PHP Version:        Irrelevant
 Block user comment: N
 Private report:     N

 New Comment:

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php

https://www.php.net/manual/en/filter.filters.validate.php
> Validates value as URL (according to » http://www.faqs.org/rfcs/rfc2396),
> optionally with required components. Beware a valid URL may not specify the HTTP
> protocol http:// so further validation may be required to determine the
> URL uses
> an expected protocol, e.g. ssh:// or mailto:. Note that the function
> will only
> find ASCII URLs to be valid; internationalized domain names (containing non-
> ASCII characters) will fail.

FILTER_VALIDATE_URL validates URLs, not URIs.


Previous Comments:
------------------------------------------------------------------------
[2021-08-05 07:00:28] tamas dot nagy0404 at outlook dot com

Description:
------------
Hi,

Looks like the filter_var('urn:isbn:0451450523', FILTER_VALIDATE_URL);
function does not validate the urn: type of URIs properly.

The "urn:" type of URIs are mentioned by http://www.faqs.org/rfcs/rfc2396.html however the
function just marks as invalid whereas it should validate it according to http://www.faqs.org/rfcs/rfc2141.html that is
referenced from the RFC2396. 

Related comment: https://www.php.net/manual/en/filter.filters.validate.php#110411

Tests: https://3v4l.org/SOd9X#veol

Test script:
---------------
https://3v4l.org/SOd9X#veol

Expected result:
----------------
I would expect to validate urn: URIs to be validated properly according to http://www.faqs.org/rfcs/rfc2141.html



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