Merge branch 'MDL-58905_master' of git://github.com/dmonllao/moodle

auth/oauth2/classes/api.php

@@ -350,4 +350,14 @@ class api {
 
         return $DB->delete_records(linked_login::TABLE, ['userid' => $userid]);
     }
+
+    /**
+     * Is the plugin enabled.
+     *
+     * @return bool
+     */
+    public static function is_enabled() {
+        $plugininfo = \core_plugin_manager::instance()->get_plugin_info('auth_oauth2');
+        return $plugininfo->is_enabled();
+    }
 }

auth/oauth2/confirm-account.php

@@ -34,6 +34,10 @@ $PAGE->set_context(context_system::instance());
 
 $auth = get_auth_plugin('oauth2');
 
+if (!\auth_oauth2\api::is_enabled()) {
+    throw new \moodle_exception('notenabled', 'auth_oauth2');
+}
+
 $confirmed = $auth->user_confirm($username, $usersecret);
 
 if ($confirmed == AUTH_CONFIRM_ALREADY) {

auth/oauth2/confirm-linkedlogin.php

@@ -34,6 +34,10 @@ $redirect = optional_param('redirect', '', PARAM_LOCALURL);    // Where to redir
 $PAGE->set_url('/auth/oauth2/confirm-linkedlogin.php');
 $PAGE->set_context(context_system::instance());
 
+if (!\auth_oauth2\api::is_enabled()) {
+    throw new \moodle_exception('notenabled', 'auth_oauth2');
+}
+
 $confirmed = \auth_oauth2\api::confirm_link_login($userid, $username, $issuerid, $token);
 
 if ($confirmed) {

auth/oauth2/lang/en/auth_oauth2.php

@@ -72,6 +72,7 @@ $string['emailconfirmlinksent'] = '<p>An existing account was found with this em
    <p>If you have any difficulty, contact the site administrator.</p>';
 $string['info'] = 'External account';
 $string['issuer'] = 'OAuth 2 Service';
+$string['issuernologin'] = 'This issuer can not be used to login';
 $string['linkedlogins'] = 'Linked logins';
 $string['linkedloginshelp'] = 'Help with linked logins';
 $string['loginerror_userincomplete'] = 'The user information returned did not contain a username and email address. The OAuth 2 service may be configured incorrectly.';
@@ -79,9 +80,11 @@ $string['loginerror_nouserinfo'] = 'No user information was returned. The OAuth
 $string['loginerror_invaliddomain'] = 'The email address is not allowed at this site.';
 $string['loginerror_authenticationfailed'] = 'The authentication process failed.';
 $string['loginerror_cannotcreateaccounts'] = 'An account with your email address could not be found.';
+$string['noissuersavailable'] = 'None of the configured OAuth2 services allow you to link login accounts';
 $string['notloggedindebug'] = 'The login attempt failed. Reason: {$a}';
 $string['notwhileloggedinas'] = 'Linked logins cannot be managed while logged in as another user.';
 $string['oauth2:managelinkedlogins'] = 'Manage own linked login accounts';
+$string['notenabled'] = 'Sorry, OAuth 2 authentication plugin is not enabled';
 $string['plugindescription'] = 'This authentication plugin displays a list of the configured identity providers on the login page. Selecting an identity provider allows users to login with their credentials from an OAuth 2 provider.';
 $string['pluginname'] = 'OAuth 2';
 $string['alreadylinked'] = 'This external account is already linked to an account on this site';

auth/oauth2/lib.php

@@ -40,7 +40,7 @@ function auth_oauth2_extend_navigation_user_settings(navigation_node $useraccoun
                                                      context_course $coursecontext) {
     global $USER;
 
-    if (!\core\session\manager::is_loggedinas()) {
+    if (\auth_oauth2\api::is_enabled() && !\core\session\manager::is_loggedinas()) {
         if (has_capability('auth/oauth2:managelinkedlogins', $context) && $user->id == $USER->id) {
 
             $parent = $useraccount->parent->find('useraccount', navigation_node::TYPE_CONTAINER);

auth/oauth2/linkedlogins.php

@@ -35,12 +35,19 @@ $PAGE->set_heading($strheading);
 
 require_login();
 
+if (!\auth_oauth2\api::is_enabled()) {
+    throw new \moodle_exception('notenabled', 'auth_oauth2');
+}
+
 $action = optional_param('action', '', PARAM_ALPHAEXT);
 if ($action == 'new') {
     require_sesskey();
     $issuerid = required_param('issuerid', PARAM_INT);
     $issuer = \core\oauth2\api::get_issuer($issuerid);
 
+    if (!$issuer->is_authentication_supported() || !$issuer->get('showonloginpage') || !$issuer->get('enabled')) {
+        throw new \moodle_exception('issuernologin', 'auth_oauth2');
+    }
 
     // We do a login dance with this issuer.
     $addparams = ['action' => 'new', 'issuerid' => $issuerid, 'sesskey' => sesskey()];
@@ -80,25 +87,40 @@ $renderer = $PAGE->get_renderer('auth_oauth2');
 $linkedloginid = optional_param('id', '', PARAM_RAW);
 $linkedlogin = null;
 
+auth_oauth2\api::clean_orphaned_linked_logins();
+
+$issuers = \core\oauth2\api::get_all_issuers();
+
+$anyshowinloginpage = false;
+$issuerbuttons = array();
+foreach ($issuers as $issuer) {
+    if (!$issuer->is_authentication_supported() || !$issuer->get('showonloginpage') || !$issuer->get('enabled')) {
+        continue;
+    }
+    $anyshowinloginpage = true;
+
+    $addparams = ['action' => 'new', 'issuerid' => $issuer->get('id'), 'sesskey' => sesskey(), 'logout' => true];
+    $addurl = new moodle_url('/auth/oauth2/linkedlogins.php', $addparams);
+    $issuerbuttons[$issuer->get('id')] = $renderer->single_button($addurl, get_string('createnewlinkedlogin', 'auth_oauth2', s($issuer->get('name'))));
+}
+
+if (!$anyshowinloginpage) {
+    // Just a notification that we can't make it.
+    $preferencesurl = new moodle_url('/user/preferences.php');
+    redirect($preferencesurl, get_string('noissuersavailable', 'auth_oauth2'), null, \core\output\notification::NOTIFY_WARNING);
+}
+
 echo $OUTPUT->header();
 echo $OUTPUT->heading(get_string('linkedlogins', 'auth_oauth2'));
 echo $OUTPUT->doc_link('Linked_Logins', get_string('linkedloginshelp', 'auth_oauth2'));
-auth_oauth2\api::clean_orphaned_linked_logins();
 $linkedlogins = auth_oauth2\api::get_linked_logins();
 
 echo $renderer->linked_logins_table($linkedlogins);
 
-$issuers = \core\oauth2\api::get_all_issuers();
+foreach ($issuerbuttons as $issuerbutton) {
-
+    echo $issuerbutton;
-foreach ($issuers as $issuer) {
-    if (!$issuer->is_authentication_supported()) {
-        continue;
-    }
-
-    $addparams = ['action' => 'new', 'issuerid' => $issuer->get('id'), 'sesskey' => sesskey(), 'logout' => true];
-    $addurl = new moodle_url('/auth/oauth2/linkedlogins.php', $addparams);
-    echo $renderer->single_button($addurl, get_string('createnewlinkedlogin', 'auth_oauth2', s($issuer->get('name'))));
 }
+
 echo $OUTPUT->footer();
 
 

auth/oauth2/login.php

@@ -29,6 +29,10 @@ $wantsurl = new moodle_url(optional_param('wantsurl', '', PARAM_URL));
 
 require_sesskey();
 
+if (!\auth_oauth2\api::is_enabled()) {
+    throw new \moodle_exception('notenabled', 'auth_oauth2');
+}
+
 $issuer = new \core\oauth2\issuer($issuerid);
 
 $returnparams = ['wantsurl' => $wantsurl, 'sesskey' => sesskey(), 'id' => $issuerid];