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Bug #54255 FILTER_VALIDATE_URL does not allow - in domain name
Submitted: 2011-03-15 09:56 UTC Modified: 2013-02-18 00:34 UTC
Votes:5
Avg. Score:4.2 ± 1.0
Reproduced:4 of 4 (100.0%)
Same Version:3 (75.0%)
Same OS:3 (75.0%)
From: nm at web dot am Assigned:
Status: No Feedback Package: Filter related
PHP Version: 5.3.5 OS: Linux
Private report: No CVE-ID: None
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 [2011-03-15 09:56 UTC] nm at web dot am 
Description:
------------
FILTER_VALIDATE_URL documentatin says that it does filtering according to  rfc2396, but in fact filter_var fails to conform RFC.

Hostname definition in rfc is as follows:

hostport      = host [ ":" port ]
host          = hostname | IPv4address
hostname      = *( domainlabel "." ) toplabel [ "." ]
domainlabel   = alphanum | alphanum *( alphanum | "-" ) alphanum
toplabel      = alpha | alpha *( alphanum | "-" ) alphanum


so it should allow "-" dash symbol in domainnames (both domain name and TLD name).

In other hand it SHOULD NOT allow "_" symbol in the domain name, as it is against specification (right now it allows).
 

Test script:
---------------
first case also should validate successfully  

php -r 'var_dump(filter_var("http://ea-sd.com", FILTER_VALIDATE_URL));'
bool(false)

php -r 'var_dump(filter_var("http://easd.com", FILTER_VALIDATE_URL));'
string(15) "http://easd.com"

Patches

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 [2011-03-15 15:38 UTC] rasmus@php.net
-Status: Open +Status: Bogus
 [2011-03-15 15:38 UTC] rasmus@php.net 
# php -v
PHP 5.3.5 (cli) (built: Mar 15 2011 07:36:59) 

# php -r 'var_dump(filter_var("http://ea-sd.com", FILTER_VALIDATE_URL));'
string(16) "http://ea-sd.com"
 [2011-03-15 15:39 UTC] rasmus@php.net 
Oh, and:

# php -r 'var_dump(filter_var("http://ea_sd.com", FILTER_VALIDATE_URL));'
bool(false)
 [2011-03-15 23:00 UTC] nm at web dot am 
What the f...bug!

changed http to hxxp to prevent spam detection :) change back while testing.

Let's compare the results:

Ubuntu 10.10, Linux eniac 2.6.36-020636-generic #201010210905 SMP Thu Oct 21 09:08:58 UTC 2010 x86_64 GNU/Linux, PHP 5.3.3-1ubuntu9.3 with Suhosin-Patch (cli) (built: Jan 12 2011 16:07:38) ,  package: php5 5.3.3-1ubuntu9.3 

works as expected. 
@eniac ~> php -r 'var_dump(filter_var("hxxp://asd_asd.de", FILTER_VALIDATE_URL));'
bool(false)
@eniac ~> php -r 'var_dump(filter_var("hxxp://asd-asd.de", FILTER_VALIDATE_URL));'
string(17) "http://asd-asd.de"
@eniac ~> 


CentOS 5, 2.6.18-194.8.1.el5.028stab070.5 , PHP 5.2.9 

@www1 ~> php -r 'var_dump(filter_var("hxxp://asd_asd.de", FILTER_VALIDATE_URL));'
string(17) "http://asd_asd.de"
@www1 ~> php -r 'var_dump(filter_var("hxxp://asd-asd.de", FILTER_VALIDATE_URL));'
string(17) "http://asd-asd.de"

well, this is the bug, but fixed in upstream.


FreeBSD 8.0-RELEASE-p4,  PHP 5.3.5 with Suhosin-Patch (cli) (built: Mar 14 2011 17:47:34), package php5-5.3.5 (compiled from ports)

@www-backup ...db/pkg> php -r 'var_dump(filter_var("hxxp://asd_asd.de", FILTER_VALIDATE_URL));'
string(17) "http://asd_asd.de"
@www-backup ...db/pkg> php -r 'var_dump(filter_var("hxxp://asd-asd.de", FILTER_VALIDATE_URL));'
bool(false)
@www-backup ...db/pkg> 


What is wrong with it on FreeBSD ?????

Seems that it is more build or OS related problem, than php itself.
 [2011-03-15 23:05 UTC] pajoye@php.net
-Status: Bogus +Status: Feedback
 [2011-03-15 23:05 UTC] pajoye@php.net 
Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2011-03-15 23:06 UTC] pajoye@php.net 
As in try using php.net's sources. Then bogus it again :)
 [2013-02-18 00:34 UTC] php-bugs at lists dot php dot net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.
 
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