mymodule/templates/selectsource.tpl.php

+<?php
+$this->data['header'] = $this->t('{multiauth:multiauth:select_source_header}');
+$this->includeAtTemplateBase('includes/header.php');
+?>
+
+<h2><?php echo 'Benutzerkonto auswählen' ?></h2>
+
+<p><?php echo 'Bitte wählen Sie ein Benutzerkonto aus, mit dem Sie sich authentifizieren wollen:' ?></p>
+
+<form action="/idp/module.php/multiauth/selectsource.php" method="get">
+    <input type="hidden" name="AuthState" value="<?php echo htmlspecialchars($this->data['authstate']); ?>" />
+<?php
+echo '<div>';
+foreach ($this->data['sources'] as $source) {
+    if ($source['source'] === $this->data['preferred']) {
+        $autofocus = ' autofocus="autofocus"';
+    } else {
+        $autofocus = '';
+    }
+    $name = 'src-'.base64_encode($source['source']);
+    echo '<input type="submit" class="'.htmlspecialchars($source['css_class']).'"  name="'.htmlspecialchars($name).'"'.$autofocus.' '.
+        'id="button-'.htmlspecialchars($source['source']).'" '.
+        'value="'.htmlspecialchars($source['text']).'" ></input>';
+}
+echo '</div>';
+?>
+</form>
+<?php $this->includeAtTemplateBase('includes/footer.php');

mymodule/themes/fancytheme/default/includes/header.php

@@ -47,11 +47,12 @@ header('X-Frame-Options: SAMEORIGIN');
 <link rel="icon" type="image/icon" href="/<?php echo $this->data['baseurlpath']; ?>resources/icons/favicon.ico" />
 <title>M4_LAB: User Login</title>
 <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
-<link rel="stylesheet" type="text/css" href="/css/bootstrap/bootstrap.css"/>
+<link rel="stylesheet" type="text/css" href="/css/bootstrap.css"/>
 <link rel="stylesheet" type="text/css"  href="/css/Login-Form-Clean.css"/>
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay" crossorigin="anonymous">
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
 <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+<link rel="stylesheet" type="text/css"  href="/css/styles.css"/>
 <?php
 
 if (!empty($jquery)) {

mymodule/themes/fancytheme/multiauth/selectsource.php

+<?php
+
+/**
+ * This page shows a list of authentication sources. When the user selects
+ * one of them if pass this information to the
+ * \SimpleSAML\Module\multiauth\Auth\Source\MultiAuth class and call the
+ * delegateAuthentication method on it.
+ *
+ * @author Lorenzo Gil, Yaco Sistemas S.L.
+ * @package SimpleSAMLphp
+ */
+
+// Retrieve the authentication state
+if (!array_key_exists('AuthState', $_REQUEST)) {
+    throw new \SimpleSAML\Error\BadRequest('Missing AuthState parameter.');
+}
+$authStateId = $_REQUEST['AuthState'];
+
+/** @var array $state */
+$state = \SimpleSAML\Auth\State::loadState($authStateId, \SimpleSAML\Module\multiauth\Auth\Source\MultiAuth::STAGEID);
+
+if (array_key_exists("\SimpleSAML\Auth\Source.id", $state)) {
+    $authId = $state["\SimpleSAML\Auth\Source.id"];
+    /** @var \SimpleSAML\Module\multiauth\Auth\Source\MultiAuth $as */
+    $as = \SimpleSAML\Auth\Source::getById($authId);
+} else {
+    $as = null;
+}
+
+$source = null;
+if (array_key_exists('source', $_REQUEST)) {
+    $source = $_REQUEST['source'];
+} else {
+    foreach ($_REQUEST as $k => $v) {
+        $k = explode('-', $k, 2);
+        if (count($k) === 2 && $k[0] === 'src') {
+            $source = base64_decode($k[1]);
+        }
+    }
+}
+if ($source !== null) {
+    if ($as !== null) {
+        $as->setPreviousSource($source);
+    }
+    \SimpleSAML\Module\multiauth\Auth\Source\MultiAuth::delegateAuthentication($source, $state);
+}
+
+if (array_key_exists('multiauth:preselect', $state)) {
+    $source = $state['multiauth:preselect'];
+    \SimpleSAML\Module\multiauth\Auth\Source\MultiAuth::delegateAuthentication($source, $state);
+}
+
+$globalConfig = \SimpleSAML\Configuration::getInstance();
+$t = new \SimpleSAML\XHTML\Template($globalConfig, 'mymodule:selectsource.tpl.php');
+
+$defaultLanguage = $globalConfig->getString('language.default', 'en');
+$language = $t->getTranslator()->getLanguage()->getLanguage();
+
+$sources = $state[\SimpleSAML\Module\multiauth\Auth\Source\MultiAuth::SOURCESID];
+foreach ($sources as $key => $source) {
+    $sources[$key]['source64'] = base64_encode($sources[$key]['source']);
+    if (isset($sources[$key]['text'][$language])) {
+        $sources[$key]['text'] = $sources[$key]['text'][$language];
+    } else {
+        $sources[$key]['text'] = $sources[$key]['text'][$defaultLanguage];
+    }
+
+    if (isset($sources[$key]['help'][$language])) {
+        $sources[$key]['help'] = $sources[$key]['help'][$language];
+    } else {
+        $sources[$key]['help'] = $sources[$key]['help'][$defaultLanguage];
+    }
+}
+
+$t->data['authstate'] = $authStateId;
+$t->data['sources'] = $sources;
+$t->data['selfUrl'] = $_SERVER['PHP_SELF'];
+
+if ($as !== null) {
+    $t->data['preferred'] = $as->getPreviousSource();
+} else {
+    $t->data['preferred'] = null;
+}
+$t->show();
+exit();