Merge branch 'MDL-60435_master' of git://github.com/markn86/moodle

auth/shibboleth/auth.php

@@ -277,6 +277,32 @@ class auth_plugin_shibboleth extends auth_plugin_base {
             return;
         }
     }
+
+    /**
+     * Return a list of identity providers to display on the login page.
+     *
+     * @param string $wantsurl The requested URL.
+     * @return array List of arrays with keys url, iconurl and name.
+     */
+    public function loginpage_idp_list($wantsurl) {
+        $config = get_config('auth_shibboleth');
+        $result = [];
+
+        // Before displaying the button check that Shibboleth is set-up correctly.
+        if (empty($config->user_attribute)) {
+            return $result;
+        }
+
+        $url = new moodle_url('/auth/shibboleth/index.php');
+        $iconurl = moodle_url::make_pluginfile_url(context_system::instance()->id,
+                                                   'auth_shibboleth',
+                                                   'logo',
+                                                   null,
+                                                   '/',
+                                                   $config->auth_logo);
+        $result[] = ['url' => $url, 'iconurl' => $iconurl, 'name' => $config->login_name];
+        return $result;
+    }
 }
 
 

auth/shibboleth/lang/en/auth_shibboleth.php

@@ -25,6 +25,8 @@
 
 $string['auth_shib_auth_method'] = 'Authentication method name';
 $string['auth_shib_auth_method_description'] = 'Provide a name for the Shibboleth authentication method that is familiar to your users. This could be the name of your Shibboleth federation, e.g. <tt>SWITCHaai Login</tt> or <tt>InCommon Login</tt> or similar.';
+$string['auth_shib_auth_logo'] = 'Authentication method logo';
+$string['auth_shib_auth_logo_description'] = 'Provide a logo for the Shibboleth authentication method that is familiar to your users. This could be the logo of your Shibboleth federation, e.g. <tt>SWITCHaai Login</tt> or <tt>InCommon Login</tt> or similar.';
 $string['auth_shib_contact_administrator'] = 'In case you are not associated with the given organizations and you need access to a course on this server, please contact the <a href="mailto:{$a}">Moodle Administrator</a>.';
 $string['auth_shibbolethdescription'] = 'Using this method users are created and authenticated using <a href="http://shibboleth.internet2.edu/">Shibboleth</a>.<br />Be sure to read the <a href="../auth/shibboleth/README.txt">README</a> for Shibboleth on how to set up your Moodle with Shibboleth';
 $string['auth_shibboleth_errormsg'] = 'Please select the organization you are member of!';

auth/shibboleth/lib.php

@@ -0,0 +1,64 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the hooks for the Shibboleth authentication module.
+ *
+ * @package auth_shibboleth
+ * @copyright 2018 Fabrice Ménard
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+/**
+ * Serves the logo file settings.
+ *
+ * @param stdClass $course course object
+ * @param stdClass $cm course module object
+ * @param stdClass $context context object
+ * @param string $filearea file area
+ * @param array $args extra arguments
+ * @param bool $forcedownload whether or not force download
+ * @param array $options additional options affecting the file serving
+ * @return bool false if file not found, does not return if found - justsend the file
+ */
+function auth_shibboleth_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=array()) {
+    if ($context->contextlevel != CONTEXT_SYSTEM) {
+        return false;
+    }
+
+    if ($filearea !== 'logo' ) {
+        return false;
+    }
+
+    $itemid = 0;
+
+    $filename = array_pop($args);
+    if (!$args) {
+        $filepath = '/';
+    } else {
+        $filepath = '/'.implode('/', $args).'/';
+    }
+
+    $fs = get_file_storage();
+    $file = $fs->get_file($context->id, 'auth_shibboleth', $filearea, $itemid, $filepath, $filename);
+    if (!$file) {
+        return false;
+    }
+
+    send_stored_file($file, null, 0, $forcedownload, $options);
+}

auth/shibboleth/settings.php

@@ -63,6 +63,11 @@ if ($ADMIN->fulltree) {
             get_string('auth_shib_auth_method', 'auth_shibboleth'),
             get_string('auth_shib_auth_method_description', 'auth_shibboleth'), 'Shibboleth Login', PARAM_RAW_TRIMMED));
 
+    // Authentication method logo.
+    $settings->add(new admin_setting_configstoredfile('auth_shibboleth/auth_logo',
+                get_string('auth_shib_auth_logo', 'auth_shibboleth'),
+                get_string('auth_shib_auth_logo_description', 'auth_shibboleth'), 'logo', 0, ['accepted_types' => ['image']]));
+
     // Login directions.
     $settings->add(new admin_setting_configtextarea('auth_shibboleth/auth_instructions',
             get_string('auth_shib_instructions_key', 'auth_shibboleth'),