README

Single Sign-on extension for TYPO3. It enables you, to log into the TYPO3 backend or the website frontend by using an Identity Provider (IdP), for example an ADFS server (Active Directory Federation Services). It is fully configurable by TypoScript.

Screenshots

TYPO3 login:

Frontend login:

Requirements

• TYPO3 v13.4

Installation

• Install the extension with the following composer command: composer req mediadreams/md_saml or use the extension manager
• In module Site Configuration add MdSaml base configuration (ext:md_saml) in section Sets for this Site
• Activate backend login in the extension configuration. Frontend login is activated in the settings of the extension.
• Configure the extension by overriding the site settings of the extension

Configuration

Site Set

The Service Provider (SP) and Identity Provider (IdP) can be configured by adding the settings in the Site Set MdSaml base configuration (ext:md_saml), which is shipped with this extension.

Include the Site Set MdSaml base configuration (ext:md_saml) in the Site Configuration of your website.

Now modify the settings according to your needs. In order to get your custom configuration in place, add a Site Set in your site package as shown below:

The following example shows, how to modify the default configuration of ext:md_saml:

EXT:my_extension/Configuration/Sets/MdSamlOverrides/config.yaml:

name: my_extension/md_saml
label: MdSaml config for my website
dependencies:
  - mediadreams/md_saml

EXT:my_extension/Configuration/Sets/MdSamlOverrides/settings.yaml:

md_saml:
  mdsamlSpBaseUrl: 'https://%env(BASE_DOMAIN)%'

  be_users:
    databaseDefaults:
      usergroup: 3
      lang: 'de'

  fe_users:
    saml:
      sp:
        entityId: '/login/?loginProvider=1648123062&mdsamlmetadata'
        assertionConsumerService:
          url: '/login/?loginProvider=1648123062&login-provider=md_saml&login_status=login&acs&logintype=login'

  saml:
    sp:
      x509cert: '%env(SAML_SP_X509CERT)%'
      privateKey: '%env(SAML_SP_PRIVATE_KEY)%'

    idp:
      entityId: 'https://auth.myprovider.de/adfs/services/trust'
      singleSignOnService:
        url: 'https://auth.myprovider.de/adfs/ls/'

      singleLogoutService:
        url: 'https://auth.myprovider.de/adfs/ls/'

      x509cert: '%env(SAML_IDP_X509CERT)%'

As you can see, you can use environment variables in your configuration in order to configure different setups.

ATTENTION Somehow, it is not possible to use environment variables in site sets at the moment. So if you want to use env vars, do it in the general site configuration in <project-root>/config/sites/<identifier>/config.yaml. Add following at the bottom of the config file:

settings:
  md_saml:
    mdsamlSpBaseUrl: '%env(SAML_BASE_DOMAIN)%'

General information on site sets can be found here.

SAML

• Set a base url in md_saml.mdsamlSpBaseUrl for all endpoints
• Generate a certificate for the Service Provider (SP)
  openssl req -newkey rsa:3072 -new -x509 -days 3652 -nodes -out sp.crt -keyout sp.key
• Open certificate files and remove all line breaks. Copy value of sp.crt to md_saml.saml.sp.x509cert and value of sp.key to md_saml.saml.sp.privateKey

Backend

Activate backend login in the extension configuration. Go to Settings -> Extension Configuration -> md_saml and check/uncheck the checkbox.

• md_saml.be_users.saml.sp.entityId
  Identifier of the backend (TYPO3) SP entity (must be a URI)
  ATTENTION: mdsamlSpBaseUrl will be attached automatically
  Default: /typo3/index.php?loginProvider=1648123062&mdsamlmetadata
• md_saml.be_users.saml.sp.assertionConsumerService.url
  Specifies info about where and how the message of a backend (TYPO3) login MUST be returned to the requester, in this case our SP.
  Default: /typo3/index.php?loginProvider=1648123062&login-provider=md_saml&login_status=login&acs

Frontend

Activate frontend login by setting the constant md_saml.fe_users.active = 1. By default it is enabled and it will load a different login template.

• md_saml.fe_users.saml.sp.entityId
  Identifier of the frontend SP entity (must be a URI)
  ATTENTION: mdsamlSpBaseUrl will be attached automatically
  Example (just replace the speaking path ("/login/") according to your needs): /login/?loginProvider=1648123062&mdsamlmetadata
• md_saml..fe_users.saml.sp.assertionConsumerService.url
  Specifies info about where and how the message of a frontend login MUST be returned to the requester, in this case our SP.
  Example (just replace the speaking path ("/login/") according to your needs): /login/?loginProvider=1648123062&login-provider=md_saml&login_status=login&acs&logintype=login

Note

All default settings, which are configured in md_saml.saml can be overwritten for backend or frontend needs with properties in md_saml.be_users.saml... (backend) and md_saml.fe_users.saml... (frontend).

As underlying SAML toolkit the library of OneLogin is used (no account with OneLogin is needed!). See full documentation for details on the configuration.

Users

You are able to create new users, if they are not present at the time of login.

• Backend
  md_saml.be_users.createIfNotExist...
  Default = 1, so be_users will be created, if they do not exist.
• Frontend
  md_saml.fe_users.createIfNotExist...
  Default = 1, so fe_users will be created, if they do not exist.

You are able to update existing users, if they are already present at the time of login.

• Backend
  md_saml.be_users.updateIfExist...
  Default = 1, so be_users will be updated, if they exist.
• Frontend
  md_saml.fe_users.updateIfExist...
  Default = 1, so fe_users will be updated, if they exist.

Backend

• md_saml.be_users.createIfNotExist
  Decide whether a new backend user should be created (Default = 1)
• md_saml.be_users.updateIfExist
  Decide whether a backend user should be updated (Default = 1)
• md_saml.be_users.databaseDefaults...
  This section allows you to set defaults for a newly created backend user. You can add any fields of the database here.
  Example: md_saml.be_users.databaseDefaults.usergroup = 123 will create a new user with usergroup 123 attached.

Frontend

• md_saml.fe_users.createIfNotExist
  Decide whether a new frontend user should be created (Default = 1)
• md_saml.fe_users.updateIfExist
  Decide whether a frontend user should be updated (Default = 1)
• md_saml.fe_users.databaseDefaults...
  This section allows you to set defaults for a newly created frontend user. You can add any fields of the database here.
  Example: md_saml.fe_users.databaseDefaults.usergroup = 123 will create a new user with usergroup 123 attached.
  ATTENTION: md_saml.fe_users.databaseDefaults.pid will be used as storage for newsly created fe_users.

SSO

The returned value of the SSO provider can be anything. With the following configuration set the names of the returned values to the ones needed in TYPO3:

Backend

• md_saml.be_users.transformationArr
  Example: md_saml.be_users.transformationArr.username = http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname
  The above example shows the returning value of an ADFS server, which contains the username for TYPO3.

Frontend

• md_saml.fe_users.transformationArr
  Example: md_saml.fe_users.transformationArr.username = http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname
  The above example shows the returning value of an ADFS server, which contains the username for a frontend user.

ADFS

The following steps are an example on how to configure an ADFS server as IdP (Identity Provider).

Since I don't have the configuration in english, the following section is available in german only. I am sorry for that!

• Get SP (Service Provider) meta data. Log into TYPO3 (important!) and call /typo3/index.php?loginProvider=1648123062&mdsamlmetadata&loginType=backend for the backend configuration and /typo3/index.php?loginProvider=1648123062&mdsamlmetadata&loginType=frontend for the frontend configuration.

• Neue Vertrauensstellung der vertrauenden Seite erstellen

  1. Willkommen

     • Modus Ansprüche unterstützen auswählen
     • Knopf Start klicken

  2. Datenquelle auswählen

     • Option Daten über vertrauende Seite aus einer Datei importieren auswählen
     • XML der Metadaten aus dem ersten Schritt auswählen
     • Knopf Weiter klicken

  3. Anzeigennamen angeben

     • Einen Wert für Anzeige Name eintragen
     • Weiter klicken

  4. Zugriffssteuerungsrichtline auswählen

     • Im Feld Wählen Sie eine Zugriffssteuerungsrichtlinie aus, den Zugriff-OTP auswählen
     • Weiter klicken

  5. Bereit zum Hinzufügen der Vertrauensstellung

     • Daten prüfen und Weiter klicken

  6. Fertig stellen

     • Schließen klicken

• Die Ansprucheaustellungsrichtlinie für diese Anwendung konfigurieren prüfen

• Neue Regel mit Regel hinzufügen ... hinzufügen

• Im Feld Anspruchsregelvorlage die Option Ansprüche mithilfe einer benutzerdefinierten Regel senden auswählen und Weiter klicken

• Im Feld Anspruchsregelname den Wert Name Identifier eingeben

• Im Feld Benutzerdefinierte Regel folgendes eingeben:
  c:[Type == "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname"] => issue(Type = "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier", Issuer = c.Issuer, OriginalIssuer = c.OriginalIssuer, Value = c.Value, ValueType = c.ValueType, Properties["http://schemas.xmlsoap.org/ws/2005/05/identity/claimproperties/format"] = "urn:oasis:names:tc:SAML:1.1:nameid-format:WindowsDomainQualifiedName");

• Knopf Fertig stellen klicken

• Neue Regel hinzufügen mit klick auf Regel hinzufügen ...

• Im Feld Anspruchsregelvorlage den Wert Ansprüche mithilfe einer benutzerdefinierten Regel senden auswählen und Weiter klicken

• Im Feld Anspruchsregelname den Data Rule eingeben

• Im Feld Benutzerdefinierte Regel folgendes eingeben:
  c:[Type == "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname", Issuer == "AD AUTHORITY"] => issue(store = "Active Directory", types = ("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress", "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/givenname", "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/surname", "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname", "distinguishedName", "memberOf"), query = ";mail,displayName,sn,sAMAccountName,distinguishedName,memberOf;{0}", param = c.Value);

• Knopf Fertig stellen klicken

• Die Ansprucheaustellungsrichtlinie mit OK verlassen

ACHTUNG:
Die Reihenfolge der Regeln ist wichtig! Die erste muss die Name Identifier Regel sein!

Als letztes muss noch im Reiter Bezeichner der Vertrauensstellung im Feld Bezeichner der vertrauenden Seite der Wert, der in md_saml.mdsamlSpBaseUrl eingegeben werden.

TYPO3

General

• In `settings.php` or `additional.php` the `['BE']['cookieSameSite']` must be set to `lax`:
  

  $GLOBALS['TYPO3_CONF_VARS']['BE']['cookieSameSite'] = 'lax'

• In `Site Configuration` set the value of `Entry Point` (`base`) to a full qualified entry point. For example set `https://www.domain.tld/` instead of just using `/`.

Site Config

errorHandling:
    errorCode: 403
    errorHandler: PHP
    errorPhpClassFQCN: Mediadreams\MdSaml\Error\ForbiddenHandling

Change User Event

event to customize user data before insert/update on login

namespace XXX\XXX\EventListener;

use Mediadreams\MdSaml\Event\ChangeUserEvent;
use TYPO3\CMS\Core\Utility\GeneralUtility;

final class AddGroupChangeUserEventListener {

  protected int $adminGroupUid = 3;

  // SSO User Changes
  public function __invoke(ChangeUserEvent $event): void
  {
      // get current data
      $userData = $event->getUserData();
      $email = $userData['email'] ?? null;
      // some conditions, if true add group
      if (1) {
          $usergroups = GeneralUtility::intExplode(',', $userData['usergroup']);
          $usergroups[] = $this->adminGroupUid;
	  // change some data
          $userData['usergroup'] = implode(',', $usergroups);
	  // save new data
          $event->setUserData($userData);
      }
  }
}

You must register the event listener in Services.yaml

FAQ

Is is possible, to remove the default login with username and password?

Yes, just add following line in the `ext_localconf.php` of your the extension:

unset($GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['backend']['loginProviders'][1433416747]);

I get a `1648646492 RuntimeException, The site configuration could not be resolved.`

Make sure, that the domain of your website is configured in the site configuration (`sites/identifier/config.yaml`) for `base`.

The template for the frontend login is not loaded.

If the website uses a mixed setup consisting of a TypoScript template (sys_template) and site sets, it is important to uncheck the "Clear" flag for constants and setup in the TypoScript template. If the "Clear" flag is checked (default), TypoScript settings from site sets are cleared and do therefore not apply.

Troubleshooting

If your login fails with the parameter ?commandLI=setCookie (typo3/index.php?commandLI=setCookie), please make sure, that you have set $GLOBALS['TYPO3_CONF_VARS']['BE']['cookieSameSite'] = 'lax'.

Bugs and Known Issues

If you find a bug, it would be nice if you add an issue on Github.

THANKS

Thanks a lot to all who make this outstanding TYPO3 project possible!

Credits

• Thanks to the guys at OneLogin who provide the SAML toolkit for PHP, which I use.
• Extension icon by Font Awesome.