How to get REMOTE_USER variable in PHP while using ubuntu and apache for SSO in Joomla

Question

I'm new to php and Apache.
I'm currently making intrantet for the hospital and I would really love to get SSO working.
I'm using Bitnami Joomla Stack VM which runs on 64-bit Ubuntu 14.04. I've followed Tim Plummer guide how to get SSO working with shmanic.com tools.
I've got this far that I can log into intranet with AD username and password but in order to get SSO working I need REMOTE_USER variable from php.

I looked for REMOTE_USER variable in Ubuntu terminal by using command php info.php where I had written in .php file phpinfo();
I also found that there's MIT Kerberos, WinBind and NTLM but I'm not sure if those are what I need.

How do I get this variable and am I looking at the right place for the REMOTE_USER or it must be displayed somewhere else?

Tim Plummer guide for Joomla SSO: [http://timplummer.com.au/4-how-to-integrate-joomla-3-with-active-directory-using-ldap.html#!kmt-start=45]
Shmanic SSO tools for Joomla: [http://shmanic.com/tools/jmapmyldap/download.htm]

I tried to follow breq solution stackoverflow.com/questions/20994329/… but that module is in Windows binary. Ended up with invalid ELF header msg. — Einar
– Einar, Commented Aug 10, 2016 at 5:43
Microsoft doesn't recommend to use NTLM. msdn.microsoft.com/en-us/library/cc236715.aspx — Einar
– Einar, Commented Aug 10, 2016 at 5:50

jonasfh · Accepted Answer · 2016-08-09 12:21:01Z

1

In PHP you should be able to get the REMOTE_USER - variable with the following:

$remote_user = $_SERVER['REMOTE_USER']; echo $remote_user;

answered Aug 9, 2016 at 12:21

jonasfh

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Einar Over a year ago

I get msg like that PHP Notice: Undefined index: REMOTE_USER in /home/bitnami/i.php on line 2. When I use $r = array_key_exists( 'REMOTE_HOST', $_SERVER) ? $_SERVER['REMOTE_HOST'] : gethostbyaddr($_SERVER["REMOTE_ADDR"]); I get msg PHP Notice: Undefined index: REMOTE_ADDR in /home/bitnami/i.php on line 2 PHP Warning: gethostbyaddr(): Address is not a valid IPv4 or IPv6 address in /home/bitnami/i.php on line 2

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