Bug->Req #54629 [Opn]: FILTER_VALIDATE_URL rejects IPv6 URLs http://[::1]/

From: Date: Fri, 29 Apr 2011 02:13:36 +0000
Subject: Bug->Req #54629 [Opn]: FILTER_VALIDATE_URL rejects IPv6 URLs http://[::1]/
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-160435@lists.php.net to get a copy of this message 
Edit report at http://bugs.php.net/bug.php?id=54629&edit=1

 ID:                 54629
 Updated by:         dtajchreber@php.net
 Reported by:        xmilky+php at gmail dot com
 Summary:            FILTER_VALIDATE_URL rejects IPv6 URLs http://[::1]/
 Status:             Open
-Type:               Bug
+Type:               Feature/Change Request
 Package:            URL related
 Operating System:   amd64 GNU/Linux 2.6.35
 PHP Version:        5.3.6
 Block user comment: N
 Private report:     N

 New Comment:

"Validates value as URL (according to »
http://www.faqs.org/rfcs/rfc2396), optionally with
required components.
Note that the function will only find ASCII URLs to be 
valid; internationalized domain names (containing non-ASCII characters)
will fail."

RFC 2396 doesn't support IPv6 addresses... would need to implement RFC
2732 checks... flipping to feature request. 

[1] http://www.php.net/manual/en/filter.filters.validate.php
[2] http://www.faqs.org/rfcs/rfc2396.html
[3]
http://en.wikipedia.org/wiki/Uniform_Resource_Identifier#Refinement_of_specifications
[4] http://tools.ietf.org/html/rfc2732


Previous Comments:
------------------------------------------------------------------------
[2011-04-29 02:17:43] xmilky+php at gmail dot com

Description:
------------
I just came to wonder why the filter extension rejects my IPv6 URLs. For
example this returns false even though it's a valid HTTP url:

    filter_var("http://[::1]:2000/push/thingy",
FILTER_VALIDATE_URL);


I'm somewhat certain that FILTER_VALIDATE_URL actually used
[parse_url](http://php.net/parse_url) behind the scenes to probe for
URL correctness. But parse_url itself works perfectly fine on such
addresses:

    Array(
        [scheme] => http
        [host] => [::1]
        [port] => 2000
        [path] => /push/thingy

So there is some limitation in the filter_var wrapper for
_VALIDATE_URL.

---

Note that this is a distinct issue to
http://bugs.php.net/bug.php?id=48762&edit=2
which was about
FILTER_VALIDATE_IP addresses only.


Test script:
---------------
<?php

var_dump(filter_var("http://[::1]/path?qs",
FILTER_VALIDATE_URL));

?>

Expected result:
----------------
string(20) "http://[::1]/path?qs"

Actual result:
--------------
bool(false)


------------------------------------------------------------------------



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