MediaWiki¶
Presentation¶
MediaWiki is a wiki software, used by the well known Wikipedia.
Several extensions allows one to configure SSO on MediaWiki:
We will explain how to use Automatic REMOTE_USER extension.
Installation¶
The extension is presented here: http://www.mediawiki.org/wiki/Extension:AutomaticREMOTE_USER
You can download the code here: https://www.mediawiki.org/wiki/Special:ExtensionDistributor/Auth_remoteuser
You have to install ‘’ Auth_remoteuser’’ in the extensions/
directory of your MediaWiki installation:
cp -a Auth_remoteuser/ extensions/
Configuration¶
MediWiki local configuration¶
Then edit MediaWiki local settings
vi LocalSettings.php
require_once "$IP/extensions/Auth_remoteuser/Auth_remoteuser.php";
$wgAuth = new Auth_remoteuser();
Add then extension configuration, for example:
$wgAuthRemoteuserAuthz = true; /* Your own authorization test */
$wgAuthRemoteuserName = $_SERVER["HTTP_AUTH_CN"]; /* User's name */
$wgAuthRemoteuserMail = $_SERVER["HTTP_AUTH_MAIL"]; /* User's Mail */
$wgAuthRemoteuserNotify = false; /* Do not send mail notifications */
//$wgAuthRemoteuserDomain = "NETBIOSDOMAIN"; /* Remove NETBIOSDOMAIN\ from the beginning or @NETBIOSDOMAIN at the end of a IWA username */
/* User's mail domain to append to the user name to make their email address */
//$wgAuthRemoteuserMailDomain = "example.com";
// see http://www.mediawiki.org/wiki/Manual:Hooks/SpecialPage_initList
// and http://www.mediawiki.org/w/Manual:Special_pages
// and http://lists.wikimedia.org/pipermail/mediawiki-l/2009-June/031231.html
// disable login and logout functions for all users
function LessSpecialPages(&$list) {
unset( $list['Userlogout'] );
unset( $list['Userlogin'] );
return true;
}
$wgHooks['SpecialPage_initList'][]='LessSpecialPages';
// http://www.mediawiki.org/wiki/Extension:Windows_NTLM_LDAP_Auto_Auth
// remove login and logout buttons for all users
function StripLogin(&$personal_urls, &$wgTitle) {
unset( $personal_urls["login"] );
unset( $personal_urls["logout"] );
unset( $personal_urls['anonlogin'] );
return true;
}
$wgHooks['PersonalUrls'][] = 'StripLogin';
Danger
In last version of Auth_remoteuser and Mediawiki, empty passwords are not authorized, so you may need to patch the extension code if you get the error: “Unexpected REMOTE_USER authentication failure. Login Error was:EmptyPass”. If necessary, use the code below to patch the extension:
sed -i "s/'wpPassword' => ''/'wpPassword' => 'none'/" extensions/Auth_remoteuser/Auth_remoteuser.body.php
Danger
In last version of Auth_remoteuser and Mediawiki, auto-provisioning requires REMOTE_USER to match the normalized mediawiki username (for example: john_doe -> john doe), so you may need to patch the extension code if you get the error: “Unexpected REMOTE_USER authentication failure. Login Error was:WrongPluginPass” You can use the code below for normalizing logins containing “_” in the extension:
sed -i '/$usertest = $this->getRemoteUsername();/a\ $usertest = str_replace( "_"," ", $usertest );' extensions/Auth_remoteuser/Auth_remoteuser.body.php
MediaWiki virtual host¶
Configure MediaWiki virtual host like other protected virtual host.
Attention
If you are protecting MediaWiki with LL::NG as reverse proxy, convert header into REMOTE_USER environment variable.
For Apache:
<VirtualHost *:80>
ServerName mediawiki.example.com
PerlHeaderParserHandler Lemonldap::NG::Handler
...
</VirtualHost>
For Nginx:
server {
listen 80;
server_name mediawiki.example.com;
root /path/to/application;
# Internal authentication request
location = /lmauth {
internal;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/run/llng-fastcgi-server/llng-fastcgi.sock;
# Drop post datas
fastcgi_pass_request_body off;
fastcgi_param CONTENT_LENGTH "";
# Keep original hostname
fastcgi_param HOST $http_host;
# Keep original request (LLNG server will received /llauth)
fastcgi_param X_ORIGINAL_URI $original_uri;
}
# Client requests
location / {
auth_request /lmauth;
set $original_uri $uri$is_args$args;
auth_request_set $lmremote_user $upstream_http_lm_remote_user;
auth_request_set $lmlocation $upstream_http_location;
error_page 401 $lmlocation;
try_files $uri $uri/ =404;
...
include /etc/lemonldap-ng/nginx-lua-headers.conf;
}
location / {
try_files $uri $uri/ =404;
}
}
MediaWiki virtual host in Manager¶
Go to the Manager and create a new virtual host for MediaWiki.
Just configure the access rules. You can also add a rule for logout:
Userlogout => logout_sso
You can create these two headers to fill user name and mail (see extension configuration):
Auth-Cn => $cn
Auth-Mail => $mail
If using LL::NG as reverse proxy, configure also the Auth-User
header,