PHP :: Bug #50214 :: IPv6 with fsockopen broken

Bug #50214

IPv6 with fsockopen broken

Submitted:

2009-11-18 10:08 UTC

Modified:

2009-11-19 13:29 UTC

Votes:	7
Avg. Score:	4.9 ± 0.3
Reproduced:	6 of 6 (100.0%)
Same Version:	0 (0.0%)
Same OS:	0 (0.0%)

From:

phil at lavin dot me dot uk

Assigned:

Status:

Closed

Package:

Streams related

PHP Version:

5.2.11

OS:

Linux 2.6.30

Private report:

CVE-ID:

None

View Add Comment Developer Edit

[2009-11-18 10:08 UTC] phil at lavin dot me dot uk

Description:
------------
When connecting to an IPv6 address, either hostname or raw address in [] an 'unknown error' is thrown. This problem occurs on both Linux and BSD and both test machines can correctly telnet to the requested address.

phil@127dot0dot0dot1:~$ php info.php | grep -i ipv6
IPv6 Support => enabled
phil@127dot0dot0dot1:~$

Reproduce code:
---------------
<?php
$a = fsockopen('[2610:1e8:2900:a::8]', 6667);

if ($a) { echo 'yay'; } else { echo 'nay'; }
?>


Expected result:
----------------
The code should echo 'yay'.

Actual result:
--------------
Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Unknown error) in /root/test.php on line 2

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[2009-11-18 14:28 UTC] jani@php.net

Was PHP compiled properly? ie. did you enable ipv6 support? (check phpinfo() output for 'IPv6 Support'.

[2009-11-18 14:37 UTC] phil at lavin dot me dot uk

The grep output in the original bug report is of a phpinfo. It is 'enabled'

Phil

[2009-11-18 16:53 UTC] jani@php.net

# sapi/cli/php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'

Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Network is unreachable) 

..so I'd say your system is either misconfigured or missing ipv6 support or the target is not there. :)

[2009-11-18 16:55 UTC] phil at lavin dot me dot uk

My system is fine. It has IPv6 support and the target is there.

phil@127dot0dot0dot1:~$ telnet 2610:1e8:2900:a::8 6667
Trying 2610:1e8:2900:a::8...
Connected to 2610:1e8:2900:a::8.
Escape character is '^]'.
:Equinox.GeekShed.net NOTICE AUTH :*** Looking up your hostname...
:Equinox.GeekShed.net NOTICE AUTH :*** Found your hostname
^]
telnet> close
Connection closed.
phil@127dot0dot0dot1:~$

I have had this same issue on both a Linux box and a BSD box running 5.2.11

Phil

[2009-11-18 16:58 UTC] phil at lavin dot me dot uk

I have just tested it on 5 different servers running 5.2.11. All give the same error, e.g.

phil@server:~$ php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'

Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Unknown error) in Command line code on line 1
bool(false)
You have new mail in /var/mail/phil
phil@server:~$

This is regardless of whether they do or don't have IPv6 support.

A server running 5.2.9 gives what you got:

phil@server1:~$ php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'

Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Network is unreachable) in Command line code on line 1
bool(false)
phil@server1:~$

Phil

[2009-11-18 17:00 UTC] jani@php.net

When compiled properly 5.2.11 will give what I got.

[2009-11-18 17:05 UTC] phil at lavin dot me dot uk

Can you please define 'properly' so that I may contact the package maintainers of PHP for Debian, FreeBSD and RHEL to notify them that they are doing something wrong.

I would have thought that, considering phpinfo reports that IPv6 is enabled in the php compile on every server, it should work correctly.

[2009-11-18 18:03 UTC] jani@php.net

It's properly configured if it's not disabled in configure line with --disable-ipv6 option. f.e.:

# rm -f config.cache && ./configure && make
# sapi/cli/php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'
Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Network is unreachable)..

[2009-11-18 19:02 UTC] phil at lavin dot me dot uk

Having just downloaded and compiled 5.2.11 (just using ./configure with no options)...

phil@127dot0dot0dot1:~/php5/php-5.2.11$ sapi/cli/php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'

Warning: fsockopen(): unable to connect to [2610:1e8:2900:a::8]:6667 (Unknown error) in Command line code on line 1
bool(false)
phil@127dot0dot0dot1:~/php5/php-5.2.11$


Phil

[2009-11-18 22:24 UTC] carsten_sttgt at gmx dot de

The same problem exists with 5.2.11 on Windows too.

Of course that's a known problem, and exists also in PHP 5.3.0. In PHP 5.3.1 (rc/dev) that's fixed.

Is (/was) there no backport to 5.2.11?

Regards,
Carsten

[2009-11-19 08:39 UTC] jani@php.net

Please try using this snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/

[2009-11-19 11:54 UTC] phil at lavin dot me dot uk

phil@127dot0dot0dot1:~/php5/php5.2-200911190930$ sapi/cli/php -r 'var_dump(fsockopen("[2610:1e8:2900:a::8]", 6667));'
resource(4) of type (stream)
phil@127dot0dot0dot1:~/php5/php5.2-200911190930$

I assume this fix will be pushed out in 5.2.12?

Phil

[2009-11-19 13:29 UTC] iliaa@php.net

This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

The fix is already in and will be part of 5.2.12

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