Can you get a Windows (AD) username in PHP?

Question

I have a PHP web application on an intranet that can extract the IP and host name of the current user on that page, but I was wondering if there is a way to get/extract their Active Directory/Windows username as well. Is this possible?

Answer 1

Check the AUTH_USER request variable. This will be empty if your web app allows anonymous access, but if your server's using basic or Windows integrated authentication, it will contain the username of the authenticated user.

In an Active Directory domain, if your clients are running Internet Explorer and your web server/filesystem permissions are configured properly, IE will silently submit their domain credentials to your server and AUTH_USER will be MYDOMAIN\user.name without the users having to explicitly log in to your web app.

Answer 2

I've got php mysql running on IIS - I can use $_SERVER["AUTH_USER"] if I turn on Windows Authentication in IIS -> Authentication and turn off Anonymous authentication (important)

I've used this to get my user and domain:

$user = $_SERVER['AUTH_USER'];

$user will return a value like: DOMAIN\username on our network, and then it's just a case of removing the DOMAIN\ from the string.

This has worked in IE, FF, Chrome, Safari (tested) so far.

Answer 3

Look at the PHP LDAP library functions: http://us.php.net/ldap.

Active Directory [mostly] conforms to the LDAP standard.

Answer 4

We have multiple domains in our environment so I use preg_replace with regex to get just the username without DOMAIN\ .

preg_replace("/^.+\\\\/", "", $_SERVER["AUTH_USER"]);

Answer 5

If you're using Apache on Windows, you can install the mod_auth_sspi from

https://sourceforge.net/projects/mod-auth-sspi/

Instructions are in the INSTALL file, and there is a whoami.php example. (It's just a case of copying the mod_auth_sspi.so file into a folder and adding a line into httpd.conf.)

Once it's installed and the necessary settings are made in httpd.conf to protect the directories you wish, PHP will populate the $_SERVER['REMOTE_USER'] with the user and domain ('USER\DOMAIN') of the authenticated user in IE -- or prompt and authenticate in Firefox before passing it in.

Info is session-based, so single(ish) signon is possible even in Firefox...

-Craig

Answer 6

If you are looking for retrieving remote user IDSID/Username, use:

echo gethostbyaddr($_SERVER['REMOTE_ADDR']);

You will get something like iamuser1-mys.corp.company.com

Filter the rest of the domain behind, and you are able to get the idsid only.

For more information visit http://lostwithin.net/how-to-get-users-ip-and-computer-name-using-php/

Answer 7

You could probably authenticate the user in Apache with mod_auth_kerb by requiring authenticated access to some files … I think that way, the username should also be available in PHP environment variables somewhere … probably best to check with <?php phpinfo(); ?> once you get it runnning.

Answer 8

Use this code:

shell_exec("wmic computersystem get username")

Answer 9

You can say getenv('USERNAME')

Answer 10

Check out patched NTLM authentication module for Apache https://github.com/rsim/mod_ntlm

Based on NTLM auth module for Apache/Unix http://modntlm.sourceforge.net/

Read more at http://blog.rayapps.com/

Source: http://imthi.com/blog/programming/leopard-apache2-ntlm-php-integrated-windows-authentication.php

Answer 11

get_user_name works the same way as getenv('USERNAME');

I had encoding(with cyrillic) problems using getenv('USERNAME')

Answer 12

No. But what you can do is have your Active Directory admin enable LDAP so that users can maintain one set of credentials

http://us2.php.net/ldap

Answer 13

Referencing trying to also figure out if AUTH_USER is part of a particular domain group; a clever way to do this is t create a locked down folder with text files (can be blank). Set security to only having the security/distro group you want to validate. Once you run a @file_get_contents (<---will toss a warning)...if the user does not have group access they will not be able to get the file contents and hence, will not have that particular AD group access. This is simple and works wonderfully.

Answer 14

This is a simple NTLM AD integration example, allows single sign on with Internet Explorer, requires login/configuration in other browsers.

PHP Example

<?php 
$user = $_SERVER['REMOTE_USER'];
$domain = getenv('USERDOMAIN');

?>

In your apache httpd.conf file

LoadModule authnz_sspi_module modules/mod_authnz_sspi.so

<Directory "/path/to/folder">
    AllowOverride     All
    Options           ExecCGI
    AuthName          "SSPI Authentication"
    AuthType          SSPI
    SSPIAuth          On
    SSPIAuthoritative On
    SSPIOmitDomain    On
    Require           valid-user
    Require           user "NT AUTHORITY\ANONYMOUS LOGON" denied
</Directory>

And if you need the module, this link is useful:

https://www.apachehaus.net/modules/mod_authnz_sspi/

Answer 15

Let's try this, it will get the user name from the Windown login

<?php
echo getenv('username');
?>

Answer 16

try this code :

$user= shell_exec("echo %username%"); 
    echo "user : $user";

you get your windows(AD) username in php

Answer 17

I tried almost all of these suggestions, but they were all returning empty values. If anyone else has this issue, I found this handy function on php.net (http://php.net/manual/en/function.get-current-user.php):

get_current_user();
$username = get_current_user();
echo $username;

This was the only way I was finally able to get the user's active directory username. If none of the above answers has worked, give this a try.