uhi67/yii2-eduid

EduID SP login for Yii2

2.0-rc 2023-03-10 11:30 UTC

Requires

• php: ^7.4 || ^8.1
• ext-simplexml: *
• simplesamlphp/simplesamlphp: ^2.0
• yiisoft/yii2: ^2.0.47

MIT

• uhi67

README

Login helper to EduID using preinstalled SimpleSAMLphp SP instance for Yii2 applications

Version 1.4 released 2022-03-25

Prerequisites

• yii2 >= 2.0.13
• php >= 5.6
• SimpleSamlPHP >= 1.14

Installation

The preferred way to install this extension is through composer.

To install, either run

    composer require uhi67/yii2-eduid "1.*" 

or add

"uhi67/yii2-eduid" : "1.*"

or clone form github

    git clone https://github.com/uhi67/yii2-eduid

Usage

Settings in config file (web.php)

'components' => [
    'saml' => [
        'class' => 'uhi67\eduidsp\Saml',
        'simpleSamlPath' => '/usr/share/simplesamlphp/',
        'authSource' => 'default-sp'
        'idAttribute' => 'eduPersonTargetedID',    ]
]

'simpleSamlPath' property is needed only if SimpleSAMLphp is separately installed and not included by composer itself into current project.

Usage in code

/**
 * Login action.
 *
 * @return Response
 */
public function actionLogin() {
	/** @var Saml $saml */
    $saml = Yii::$app->saml;
    if($saml->isAuthenticated() && !Yii::$app->user->isGuest) return $this->goHome();
    if (!$saml->isAuthenticated()) {
	    if(!$saml->requireAuth()) { // optional params array may be passed
	    	throw new ForbiddenHttpException('Authentication failure');
	    };
    }

    /** @var SamlIdentityInterface $identityClass */
    $identityClass = Yii::$app->user->identityClass;
    /** @var SamlIdentityInterface|ActiveRecord $appUser -- Locate user record in identity table */
    $appUser = $identityClass::findIdentityByUid($saml->id);
    if(!$appUser) {
        // Optional attribute check if user can be created goes here
        // Create new user record
	    $appUser = new $identityClass();
    }
    $appUser->setSamlAttributes($saml->attributes);
    $appUser->save();
    Yii::$app->user->login($appUser);
    return $this->goHome();
}

/**
 * Logout action.
 *
 * @return Response
 */
public function actionLogout() {
    /** @var Saml $saml */
    $saml = Yii::$app->saml;
    Yii::$app->user->logout();
    if($saml->isAuthenticated()) $saml->logout(); // This call never returns
    return $this->goHome();
}

Usage in views

For normal login button, use eduid-login class, for light version use eduid-login eduid-light classes.

<?php
use uhi67\eduidsp\SamlAsset;

/* @var yii\web\View $this */
SamlAsset::register($this);
?>
<?= Html::a(Yii::t('app', 'Login'), ['saml'], ['class' => 'btn btn-primary eduid-login eduid-light']) ?>

Usage in In yii2/bootstrap nav bar

<?php
NavBar::begin([
    'brandLabel' => Yii::$app->name,
    'brandUrl' => Yii::$app->homeUrl,
    'options' => [
        'class' => 'navbar-inverse navbar-fixed-top',
    ],
]);
echo Nav::widget([
    'options' => ['class' => 'navbar-nav navbar-right'],
    'items' => [
        ...
        Yii::$app->saml->isAuthenticated() ?
            ['label' => Yii::$app->saml->attributes['displayName'][0], 'url' => ['/site/logout']] :
            ['label' => Yii::t('app', 'Login'), 'url' => ['/site/login'], 'options'=>['class'=>'eduid-login']],
    ],
]);
NavBar::end();
?>

API documentation

\uhi67\eduidsp\Saml

- isAuthenticated() -- determines if the user is currently authenticated in SAMl/EduID
- requireAuth() -- Initializes login on configured authentication source
- attributes -- all attributes of the logged in user got from IdP
- logout() -- Forces logout from SAML/EduiID
- formatAttribute() -- Html formats attribute value set
- translateAttributeName() -- Translates attribute name to given language
- scope -- the best scope value determined from csoped attribute values. Waring: the scope is not clearly mapped to the organization 

\uhi67\eduidsp\SamlIdentityInterface

- setSamlAttributes($attributes)

Changes

1.5 (2022-04-12)

• logout parameters
• login parameters doc

1.4 (2022-03-25)

• scope property added

1.3 (2020-10-20)

• requireAuth() now can accept an optional params array

1.2.3

• Using new namespaces if exist

1.2.2

• Autoload namespace bug

1.2.1

• Composer-builded SimpleSAMLphp compatibility

1.2

• Saml::formatAttribute() added
• Saml::translateAttributeName() added

1.1.x

• bugfixes

1.1

• First release