New subject: [Mediawiki-l] NTLM authentication for MediaWiki

30 Mar 2005


      Thanks Jamie. From quickly looking at it I *think* AuthPlugin is designed to
operate through the normal logon process.  I'm bypassing that and
transparently authenticating against NTLM (for Intranet users - Internet
users will be prompted for a domain username and password).
If anyone's planning on using the code below I just found out that it breaks
the preferences screen.  The way to fix that is to set cookies by adding:
 //set cookies with this info to make life easier for us in the future
 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgDBname;
 $exp = time() + $wgCookieExpiration;
 setcookie( $wgDBname.'UserID', $row['user_id'], $exp, $wgCookiePath,
$wgCookieDomain );
 setcookie( $wgDBname.'UserName', $row['user_name'], $exp, $wgCookiePath,
$wgCookieDomain );
 setcookie( $wgDBname.'Token', $row['user_token'], $exp, $wgCookiePath,
$wgCookieDomain );
immediately underneath:
 //set the variables we need to transparently authenticate
 $sId                    = $row['user_id'];
 $_SESSION['wsUserID']   = $row['user_id'];
 $_SESSION['wsUserName'] = $row['user_name'];
 $_SESSION['wsToken']    = $row['user_token'];
Cheers,
al.
-----Original Message-----
From: Jamie Bliss [mailto:astronouth7303@gmail.com]
Sent: Wednesday, 30 March 2005 12:01 p.m.
To: MediaWiki announcements and site admin list
Subject: Re: [Mediawiki-l] NTLM authentication for MediaWiki
Check AuthPlugin.php, as that may let you do it.
On Wed, 30 Mar 2005 11:57:43 +1200, Alistair Johnson
JohnsonA@rembrandt.co.nz wrote:
...
Based on a post from David Cameron (19 Feb 2005) I've hacked up the
following modification to loadFromSession (in User.php) which allows
authentication against our NTLM database (based on the variable AUTH_USER
passed from IIS).
I'm trying to avoid hacking the code for 1.4 so if you know a way to
achieve
...
this without modifying User.php (or another core file) then feedback would
be most appreciated.
Cheers,
al.
    /**
     * Read datas from session
     * @static
     */
    function loadFromSession() {
    global $wgMemc, $wgDBname;

    if ( isset( $_SESSION['wsUserID'] ) ) {
            if ( 0 != $_SESSION['wsUserID'] ) {
                    $sId = $_SESSION['wsUserID'];
            } else {
                    return new User();
            }
    } else if ( isset( $_COOKIE["{$wgDBname}UserID"] ) ) {
            $sId = IntVal( $_COOKIE["{$wgDBname}UserID"] );
            $_SESSION['wsUserID'] = $sId;
    } else if ( isset($_SERVER["AUTH_USER"])) {
            //Rembrandt modification to allow logon via authentication

information
              //passed from IIS
              global $wgUser;
              global $wgDeferredUpdateList;
          //get the username
          $temp = explode('DOMAINNAME', $_SERVER["AUTH_USER"]);

//remove
...
the domain name from AUTH_USER
              $name = $temp[1];
          //pull in the usernames and passwords we'll need for the

database lookup
              global $wgDBprefix;
              global $wgDBuser;
              global $wgDBpassword;
              global $wgDBserver;
              global $wgDBname;
          //we'll use PHP's MYSQL module to access the mediawiki

database as it's Q&D
              mysql_connect($wgDBserver,$wgDBuser,$wgDBpassword);
              @mysql_select_db($wgDBname) or die( "Unable to select user
database for NTLM authentication");
              $query="SELECT * FROM " . $wgDBprefix . "user WHERE
LOWER(user_name) = '" . strtolower($name) . "'";
              $result = mysql_query($query);
              $row = mysql_fetch_array($result, MYSQL_ASSOC);
              mysql_close();
          //set the variables we need to transparently authenticate
          $sId                    = $row['user_id'];
          $_SESSION['wsUserID']   = $row['user_id'];
            $_SESSION['wsUserName'] = $row['user_name'];
            $_SESSION['wsToken']    = $row['user_token'];

} else {
            return new User();
            }
            if ( isset( $_SESSION['wsUserName'] ) ) {
                    $sName = $_SESSION['wsUserName'];
            } else if ( isset( $_COOKIE["{$wgDBname}UserName"] ) ) {
                    $sName = $_COOKIE["{$wgDBname}UserName"];
                    $_SESSION['wsUserName'] = $sName;
            } else {
                    return new User();
            }

            $passwordCorrect = FALSE;
            $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
            if($makenew = !$user) {
                    wfDebug( "User::loadFromSession() unable to load

from memcached\n" );
                        $user = new User();
                        $user->mId = $sId;
                        $user->loadFromDatabase();
                } else {
                        wfDebug( "User::loadFromSession() got from
cache!\n"
...
);
                }
            if ( isset( $_SESSION['wsToken'] ) ) {
                    $passwordCorrect = $_SESSION['wsToken'] ==

$user->mToken;
                } else if ( isset( $_COOKIE["{$wgDBname}Token"] ) ) {
                        $passwordCorrect = $user->mToken ==
$_COOKIE["{$wgDBname}Token"];
                } else {
                        return new User(); # Can't log in from session
                }
            if ( ( strtolower($sName) == strtolower($user->mName) ) &&

$passwordCorrect ) { //modified to allow for case differences between
mediawiki and NTLM usernames
                        if($makenew) {
                                if($wgMemc->set( $key, $user )) {
                                        wfDebug( "User::loadFromSession()
successfully saved user\n" );
                                } else {
                                        wfDebug( "User::loadFromSession()
unable to save to memcached\n" );
                                }
                        }
                        $user->spreadBlock();
                        return $user;
                }
            return new User(); # Can't log in from session
    }


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RE: [Mediawiki-l] NTLM authentication for MediaWiki

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