first commit

admin/tool/oauth2/classes/form/endpoint.php

@@ -0,0 +1,81 @@
+<?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 form add/update oauth2 endpoint.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_oauth2\form;
+defined('MOODLE_INTERNAL') || die();
+
+use stdClass;
+use core\form\persistent;
+
+/**
+ * Issuer form.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class endpoint extends persistent {
+
+    /** @var string $persistentclass */
+    protected static $persistentclass = 'core\\oauth2\\endpoint';
+
+    /** @var array $fieldstoremove */
+    protected static $fieldstoremove = array('submitbutton', 'action');
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        global $PAGE;
+
+        $mform = $this->_form;
+        $endpoint = $this->get_persistent();
+
+        // Name.
+        $mform->addElement('text', 'name', get_string('endpointname', 'tool_oauth2'));
+        $mform->addRule('name', null, 'required', null, 'client');
+        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('name', 'endpointname', 'tool_oauth2');
+
+        // Url.
+        $mform->addElement('text', 'url', get_string('endpointurl', 'tool_oauth2'));
+        $mform->addRule('url', null, 'required', null, 'client');
+        $mform->addRule('url', get_string('maximumchars', '', 1024), 'maxlength', 1024, 'client');
+        $mform->addHelpButton('url', 'endpointurl', 'tool_oauth2');
+
+        $mform->addElement('hidden', 'action', 'edit');
+        $mform->setType('action', PARAM_ALPHA);
+
+        $mform->addElement('hidden', 'issuerid', $endpoint->get('issuerid'));
+        $mform->setType('issuerid', PARAM_INT);
+        $mform->setConstant('issuerid', $this->_customdata['issuerid']);
+
+        $mform->addElement('hidden', 'id', $endpoint->get('id'));
+        $mform->setType('id', PARAM_INT);
+
+        $this->add_action_buttons(true, get_string('savechanges', 'tool_oauth2'));
+    }
+
+}
+

admin/tool/oauth2/classes/form/issuer.php

@@ -0,0 +1,261 @@
+<?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 form add/update oauth2 issuer.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_oauth2\form;
+defined('MOODLE_INTERNAL') || die();
+
+use stdClass;
+use core\form\persistent;
+
+/**
+ * Issuer form.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class issuer extends persistent {
+
+    /** @var string $persistentclass */
+    protected static $persistentclass = 'core\\oauth2\\issuer';
+
+    /** @var array $fieldstoremove */
+    protected static $fieldstoremove = array('type', 'submitbutton', 'action');
+
+    /** @var string $type */
+    protected $type;
+
+    /**
+     * Constructor.
+     *
+     * The 'persistent' has to be passed as custom data when 'editing'.
+     * If a standard issuer is created the type can be passed as custom data, which alters the form according to the
+     * type.
+     *
+     * Note that in order for your persistent to be reloaded after form submission you should
+     * either override the URL to include the ID to your resource, or add the ID to the form
+     * fields.
+     *
+     * @param mixed $action
+     * @param mixed $customdata
+     * @param string $method
+     * @param string $target
+     * @param mixed $attributes
+     * @param bool $editable
+     * @param array $ajaxformdata
+     */
+    public function __construct($action = null, $customdata = null, $method = 'post', $target = '', $attributes = null,
+                                $editable = true, array $ajaxformdata = null) {
+        // The type variable defines, if we are in the creation process of a standard issuer.
+        if (array_key_exists('type', $customdata)) {
+            $this->type = $customdata['type'];
+        }
+        parent::__construct($action, $customdata, $method, $target, $attributes, $editable, $ajaxformdata);
+    }
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        global $PAGE, $OUTPUT;
+
+        $mform = $this->_form;
+        $issuer = $this->get_persistent();
+
+        $docslink = optional_param('docslink', '', PARAM_ALPHAEXT);
+        if ($docslink) {
+            $name = s($issuer->get('name'));
+            $mform->addElement('html', $OUTPUT->doc_link($docslink, get_string('issuersetuptype', 'tool_oauth2', $name)));
+        } else {
+            $mform->addElement('html', $OUTPUT->page_doc_link(get_string('issuersetup', 'tool_oauth2')));
+        }
+
+        // Name.
+        $mform->addElement('text', 'name', get_string('issuername', 'tool_oauth2'));
+        $mform->addRule('name', null, 'required', null, 'client');
+        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('name', 'issuername', 'tool_oauth2');
+
+        // Client ID.
+        $mform->addElement('text', 'clientid', get_string('issuerclientid', 'tool_oauth2'));
+        $mform->addRule('clientid', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('clientid', 'issuerclientid', 'tool_oauth2');
+
+        // Client Secret.
+        $mform->addElement('text', 'clientsecret', get_string('issuerclientsecret', 'tool_oauth2'));
+        $mform->addRule('clientsecret', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('clientsecret', 'issuerclientsecret', 'tool_oauth2');
+
+        // Use basic authentication.
+        $mform->addElement('advcheckbox', 'basicauth', get_string('usebasicauth', 'tool_oauth2'));
+        $mform->addHelpButton('basicauth', 'usebasicauth', 'tool_oauth2');
+
+        // Base Url.
+        $mform->addElement('text', 'baseurl', get_string('issuerbaseurl', 'tool_oauth2'));
+        $mform->addRule('baseurl', get_string('maximumchars', '', 1024), 'maxlength', 1024, 'client');
+        $mform->addHelpButton('baseurl', 'issuerbaseurl', 'tool_oauth2');
+        if ($this->type && $this->type == 'nextcloud') {
+            $mform->addRule('baseurl', null, 'required', null, 'client');
+        }
+
+        // Image.
+        $mform->addElement('text', 'image', get_string('issuerimage', 'tool_oauth2'), 'maxlength="1024"');
+        $mform->addRule('image', get_string('maximumchars', '', 1024), 'maxlength', 1024, 'client');
+        $mform->addHelpButton('image', 'issuername', 'tool_oauth2');
+
+        // Show on login page.
+        $options = [
+            \core\oauth2\issuer::EVERYWHERE => get_string('issueruseineverywhere', 'tool_oauth2'),
+            \core\oauth2\issuer::LOGINONLY => get_string('issueruseinloginonly', 'tool_oauth2'),
+            \core\oauth2\issuer::SERVICEONLY => get_string('issueruseininternalonly', 'tool_oauth2'),
+        ];
+        $mform->addElement('select', 'showonloginpage', get_string('issuerusein', 'tool_oauth2'), $options);
+        $mform->addHelpButton('showonloginpage', 'issuerusein', 'tool_oauth2');
+
+        // Name on login page.
+        $mform->addElement('text', 'loginpagename', get_string('issuerloginpagename', 'tool_oauth2'));
+        $mform->addRule('loginpagename', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('loginpagename', 'issuerloginpagename', 'tool_oauth2');
+        $mform->hideIf('loginpagename', 'showonloginpage', 'eq', \core\oauth2\issuer::SERVICEONLY);
+
+        // Login scopes.
+        $mform->addElement('text', 'loginscopes', get_string('issuerloginscopes', 'tool_oauth2'));
+        $mform->addRule('loginscopes', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('loginscopes', 'issuerloginscopes', 'tool_oauth2');
+
+        // Login scopes offline.
+        $mform->addElement('text', 'loginscopesoffline', get_string('issuerloginscopesoffline', 'tool_oauth2'));
+        $mform->addRule('loginscopesoffline', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('loginscopesoffline', 'issuerloginscopesoffline', 'tool_oauth2');
+
+        // Login params.
+        $mform->addElement('text', 'loginparams', get_string('issuerloginparams', 'tool_oauth2'));
+        $mform->addRule('loginparams', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('loginparams', 'issuerloginparams', 'tool_oauth2');
+
+        // Login params offline.
+        $mform->addElement('text', 'loginparamsoffline', get_string('issuerloginparamsoffline', 'tool_oauth2'));
+        $mform->addRule('loginparamsoffline', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('loginparamsoffline', 'issuerloginparamsoffline', 'tool_oauth2');
+
+        // Allowed Domains.
+        $mform->addElement('text', 'alloweddomains', get_string('issueralloweddomains', 'tool_oauth2'));
+        $mform->addRule('alloweddomains', get_string('maximumchars', '', 1024), 'maxlength', 1024, 'client');
+        $mform->addHelpButton('alloweddomains', 'issueralloweddomains', 'tool_oauth2');
+        $mform->hideIf('alloweddomains', 'showonloginpage', 'eq', \core\oauth2\issuer::SERVICEONLY);
+
+        // Require confirmation email for new accounts.
+        $mform->addElement('advcheckbox', 'requireconfirmation',
+                get_string('issuerrequireconfirmation', 'tool_oauth2'));
+        $mform->addHelpButton('requireconfirmation', 'issuerrequireconfirmation', 'tool_oauth2');
+        $mform->hideIf('requireconfirmation', 'showonloginpage',
+                'eq', \core\oauth2\issuer::SERVICEONLY);
+
+        $mform->addElement('checkbox', 'acceptrisk', get_string('acceptrisk', 'tool_oauth2'));
+        $mform->addHelpButton('acceptrisk', 'acceptrisk', 'tool_oauth2');
+        $mform->hideIf('acceptrisk', 'showonloginpage',
+                'eq', \core\oauth2\issuer::SERVICEONLY);
+        $mform->hideIf('acceptrisk', 'requireconfirmation', 'checked');
+
+
+        if ($this->type == 'imsobv2p1' || $issuer->get('servicetype') == 'imsobv2p1'
+                || $this->type == 'moodlenet' || $issuer->get('servicetype') == 'moodlenet') {
+            $mform->addRule('baseurl', null, 'required', null, 'client');
+        } else {
+            $mform->addRule('clientid', null, 'required', null, 'client');
+            $mform->addRule('clientsecret', null, 'required', null, 'client');
+        }
+
+        $mform->addElement('hidden', 'sortorder');
+        $mform->setType('sortorder', PARAM_INT);
+
+        $mform->addElement('hidden', 'servicetype');
+        $mform->setType('servicetype', PARAM_ALPHANUM);
+
+        if ($this->type) {
+            $mform->addElement('hidden', 'action', 'savetemplate');
+            $mform->setType('action', PARAM_ALPHA);
+
+            $mform->addElement('hidden', 'type', $this->_customdata['type']);
+            $mform->setType('type', PARAM_ALPHANUM);
+        } else {
+            $mform->addElement('hidden', 'action', 'edit');
+            $mform->setType('action', PARAM_ALPHA);
+        }
+
+        $mform->addElement('hidden', 'enabled', $issuer->get('enabled'));
+        $mform->setType('enabled', PARAM_BOOL);
+
+        $mform->addElement('hidden', 'id', $issuer->get('id'));
+        $mform->setType('id', PARAM_INT);
+
+        $this->add_action_buttons(true, get_string('savechanges', 'tool_oauth2'));
+    }
+
+    /**
+     * This method implements changes to the form that need to be made once the form data is set.
+     */
+    public function definition_after_data() {
+        $mform = $this->_form;
+
+        if ($this->type) {
+            // Set servicetype if it's defined.
+            $mform->getElement('servicetype')->setValue($this->type);
+        }
+    }
+
+    /**
+     * Define extra validation mechanims.
+     *
+     * The data here:
+     * - does not include {@see self::$fieldstoremove}.
+     * - does include {@see self::$foreignfields}.
+     * - was converted to map persistent-like data, e.g. array $description to string $description + int $descriptionformat.
+     *
+     * You can modify the $errors parameter in order to remove some validation errors should you
+     * need to. However, the best practice is to return new or overriden errors. Only modify the
+     * errors passed by reference when you have no other option.
+     *
+     * Do not add any logic here, it is only intended to be used by child classes.
+     *
+     * @param  stdClass $data Data to validate.
+     * @param  array $files Array of files.
+     * @param  array $errors Currently reported errors.
+     * @return array of additional errors, or overridden errors.
+     */
+    protected function extra_validation($data, $files, array &$errors) {
+        if ($data->showonloginpage != \core\oauth2\issuer::SERVICEONLY) {
+            if (!strlen(trim($data->loginscopes))) {
+                $errors['loginscopes'] = get_string('required');
+            }
+            if (!strlen(trim($data->loginscopesoffline))) {
+                $errors['loginscopesoffline'] = get_string('required');
+            }
+            if (empty($data->requireconfirmation) && empty($data->acceptrisk)) {
+                $errors['acceptrisk'] = get_string('required');
+            }
+        }
+        return $errors;
+    }
+}

admin/tool/oauth2/classes/form/user_field_mapping.php

@@ -0,0 +1,80 @@
+<?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 form add/update oauth2 user_field_mapping.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_oauth2\form;
+defined('MOODLE_INTERNAL') || die();
+
+use stdClass;
+use core\form\persistent;
+
+/**
+ * Issuer form.
+ *
+ * @package   tool_oauth2
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class user_field_mapping extends persistent {
+
+    /** @var string $persistentclass */
+    protected static $persistentclass = 'core\\oauth2\\user_field_mapping';
+
+    /** @var array $fieldstoremove */
+    protected static $fieldstoremove = array('submitbutton', 'action');
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        global $PAGE;
+
+        $mform = $this->_form;
+        $userfieldmapping = $this->get_persistent();
+
+        // External.
+        $mform->addElement('text', 'externalfield', get_string('userfieldexternalfield', 'tool_oauth2'));
+        $mform->addRule('externalfield', null, 'required', null, 'client');
+        $mform->addRule('externalfield', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
+        $mform->addHelpButton('externalfield', 'userfieldexternalfield', 'tool_oauth2');
+
+        // Internal.
+        $choices = $userfieldmapping->get_internalfield_list();
+        $mform->addElement('selectgroups', 'internalfield', get_string('userfieldinternalfield', 'tool_oauth2'), $choices);
+        $mform->addHelpButton('internalfield', 'userfieldinternalfield', 'tool_oauth2');
+
+        $mform->addElement('hidden', 'action', 'edit');
+        $mform->setType('action', PARAM_ALPHA);
+
+        $mform->addElement('hidden', 'issuerid', $userfieldmapping->get('issuerid'));
+        $mform->setConstant('issuerid', $this->_customdata['issuerid']);
+        $mform->setType('issuerid', PARAM_INT);
+
+        $mform->addElement('hidden', 'id', $userfieldmapping->get('id'));
+        $mform->setType('id', PARAM_INT);
+
+        $this->add_action_buttons(true, get_string('savechanges', 'tool_oauth2'));
+    }
+
+}
+

admin/tool/oauth2/classes/output/renderer.php

@@ -0,0 +1,333 @@
+<?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/>.
+
+/**
+ * Output rendering for the plugin.
+ *
+ * @package     tool_oauth2
+ * @copyright   2017 Damyon Wiese
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_oauth2\output;
+
+use plugin_renderer_base;
+use html_table;
+use html_table_cell;
+use html_table_row;
+use html_writer;
+use core\oauth2\issuer;
+use core\oauth2\api;
+use moodle_url;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Implements the plugin renderer
+ *
+ * @copyright 2017 Damyon Wiese
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class renderer extends plugin_renderer_base {
+    /**
+     * This function will render one beautiful table with all the issuers.
+     *
+     * @param \core\oauth2\issuer[] $issuers - list of all issuers.
+     * @return string HTML to output.
+     */
+    public function issuers_table($issuers) {
+        global $CFG;
+
+        $table = new html_table();
+        $table->head  = [
+            get_string('name'),
+            get_string('issuerusedforlogin', 'tool_oauth2'),
+            get_string('logindisplay', 'tool_oauth2'),
+            get_string('issuerusedforinternal', 'tool_oauth2'),
+            get_string('discoverystatus', 'tool_oauth2') . ' ' . $this->help_icon('discovered', 'tool_oauth2'),
+            get_string('systemauthstatus', 'tool_oauth2') . ' ' . $this->help_icon('systemaccountconnected', 'tool_oauth2'),
+            get_string('edit'),
+        ];
+        $table->attributes['class'] = 'admintable generaltable';
+        $data = [];
+
+        $index = 0;
+
+        foreach ($issuers as $issuer) {
+            // We need to handle the first and last ones specially.
+            $first = false;
+            if ($index == 0) {
+                $first = true;
+            }
+            $last = false;
+            if ($index == count($issuers) - 1) {
+                $last = true;
+            }
+
+            // Name.
+            $name = $issuer->get('name');
+            $image = $issuer->get('image');
+            if ($image) {
+                $name = '<img width="24" height="24" alt="" src="' . s($image) . '"> ' . s($name);
+            }
+            $namecell = new html_table_cell($name);
+            $namecell->header = true;
+
+            // Login issuer.
+            if ((int)$issuer->get('showonloginpage') == issuer::SERVICEONLY) {
+                $loginissuer = $this->pix_icon('no', get_string('notloginissuer', 'tool_oauth2'), 'tool_oauth2');
+                $logindisplayas = '';
+            } else {
+                $logindisplayas = s($issuer->get_display_name());
+                if ($issuer->get('id') && $issuer->is_configured() && !empty($issuer->get_endpoint_url('userinfo'))) {
+                    $loginissuer = $this->pix_icon('yes', get_string('loginissuer', 'tool_oauth2'), 'tool_oauth2');
+                } else {
+                    $loginissuer = $this->pix_icon('notconfigured', get_string('notconfigured', 'tool_oauth2'), 'tool_oauth2');
+                }
+            }
+            $loginissuerstatuscell = new html_table_cell($loginissuer);
+
+            // Internal services issuer.
+            if ((int)$issuer->get('showonloginpage') == issuer::LOGINONLY) {
+                $serviceissuer = $this->pix_icon('no', get_string('issuersservicesnotallow', 'tool_oauth2'), 'tool_oauth2');
+            } else if ($issuer->get('id') && $issuer->is_configured()) {
+                $serviceissuer = $this->pix_icon('yes', get_string('issuersservicesallow', 'tool_oauth2'), 'tool_oauth2');
+            } else {
+                $serviceissuer = $this->pix_icon('notconfigured', get_string('notconfigured', 'tool_oauth2'), 'tool_oauth2');
+            }
+            $internalissuerstatuscell = new html_table_cell($serviceissuer);
+
+            // Discovered.
+            if (!empty($issuer->get('scopessupported'))) {
+                $discovered = $this->pix_icon('yes', get_string('discovered', 'tool_oauth2'), 'tool_oauth2');
+            } else {
+                if (!empty($issuer->get_endpoint_url('discovery'))) {
+                    $discovered = $this->pix_icon('no', get_string('notdiscovered', 'tool_oauth2'), 'tool_oauth2');
+                } else {
+                    $discovered = '-';
+                }
+            }
+
+            $discoverystatuscell = new html_table_cell($discovered);
+
+            // Connected.
+            if ($issuer->is_system_account_connected()) {
+                $systemaccount = \core\oauth2\api::get_system_account($issuer);
+                $systemauth = s($systemaccount->get('email')) . ' (' . s($systemaccount->get('username')). ') ';
+                $systemauth .= $this->pix_icon('yes', get_string('systemaccountconnected', 'tool_oauth2'), 'tool_oauth2');
+            } else {
+                $systemauth = $this->pix_icon('no', get_string('systemaccountnotconnected', 'tool_oauth2'), 'tool_oauth2');
+            }
+
+            $params = ['id' => $issuer->get('id'), 'action' => 'auth'];
+            $authurl = new moodle_url('/admin/tool/oauth2/issuers.php', $params);
+            $icon = $this->pix_icon('auth', get_string('connectsystemaccount', 'tool_oauth2'), 'tool_oauth2');
+            $authlink = html_writer::link($authurl, $icon);
+            $systemauth .= ' ' . $authlink;
+
+            $systemauthstatuscell = new html_table_cell($systemauth);
+
+            $links = '';
+            // Action links.
+            $editurl = new moodle_url('/admin/tool/oauth2/issuers.php', ['id' => $issuer->get('id'), 'action' => 'edit']);
+            $editlink = html_writer::link($editurl, $this->pix_icon('t/edit', get_string('edit')));
+            $links .= ' ' . $editlink;
+
+            // Endpoints.
+            $editendpointsurl = new moodle_url('/admin/tool/oauth2/endpoints.php', ['issuerid' => $issuer->get('id')]);
+            $str = get_string('editendpoints', 'tool_oauth2');
+            $editendpointlink = html_writer::link($editendpointsurl, $this->pix_icon('t/viewdetails', $str));
+            $links .= ' ' . $editendpointlink;
+
+            // User field mapping.
+            $params = ['issuerid' => $issuer->get('id')];
+            $edituserfieldmappingsurl = new moodle_url('/admin/tool/oauth2/userfieldmappings.php', $params);
+            $str = get_string('edituserfieldmappings', 'tool_oauth2');
+            $edituserfieldmappinglink = html_writer::link($edituserfieldmappingsurl, $this->pix_icon('t/user', $str));
+            $links .= ' ' . $edituserfieldmappinglink;
+
+            // Delete.
+            $deleteurl = new moodle_url('/admin/tool/oauth2/issuers.php', ['id' => $issuer->get('id'), 'action' => 'delete']);
+            $deletelink = html_writer::link($deleteurl, $this->pix_icon('t/delete', get_string('delete')));
+            $links .= ' ' . $deletelink;
+            // Enable / Disable.
+            if ($issuer->get('enabled')) {
+                // Disable.
+                $disableparams = ['id' => $issuer->get('id'), 'sesskey' => sesskey(), 'action' => 'disable'];
+                $disableurl = new moodle_url('/admin/tool/oauth2/issuers.php', $disableparams);
+                $disablelink = html_writer::link($disableurl, $this->pix_icon('t/hide', get_string('disable')));
+                $links .= ' ' . $disablelink;
+            } else {
+                // Enable.
+                $enableparams = ['id' => $issuer->get('id'), 'sesskey' => sesskey(), 'action' => 'enable'];
+                $enableurl = new moodle_url('/admin/tool/oauth2/issuers.php', $enableparams);
+                $enablelink = html_writer::link($enableurl, $this->pix_icon('t/show', get_string('enable')));
+                $links .= ' ' . $enablelink;
+            }
+            if (!$last) {
+                // Move down.
+                $params = ['id' => $issuer->get('id'), 'action' => 'movedown', 'sesskey' => sesskey()];
+                $movedownurl = new moodle_url('/admin/tool/oauth2/issuers.php', $params);
+                $movedownlink = html_writer::link($movedownurl, $this->pix_icon('t/down', get_string('movedown')));
+                $links .= ' ' . $movedownlink;
+            }
+            if (!$first) {
+                // Move up.
+                $params = ['id' => $issuer->get('id'), 'action' => 'moveup', 'sesskey' => sesskey()];
+                $moveupurl = new moodle_url('/admin/tool/oauth2/issuers.php', $params);
+                $moveuplink = html_writer::link($moveupurl, $this->pix_icon('t/up', get_string('moveup')));
+                $links .= ' ' . $moveuplink;
+            }
+
+            $editcell = new html_table_cell($links);
+
+            $row = new html_table_row([
+                $namecell,
+                $loginissuerstatuscell,
+                $logindisplayas,
+                $internalissuerstatuscell,
+                $discoverystatuscell,
+                $systemauthstatuscell,
+                $editcell,
+            ]);
+
+            if (!$issuer->get('enabled')) {
+                $row->attributes['class'] = 'dimmed_text';
+            }
+
+            $data[] = $row;
+            $index++;
+        }
+        $table->data = $data;
+        return html_writer::table($table);
+    }
+
+    /**
+     * This function will render one beautiful table with all the endpoints.
+     *
+     * @param \core\oauth2\endpoint[] $endpoints - list of all endpoints.
+     * @param int $issuerid
+     * @return string HTML to output.
+     */
+    public function endpoints_table($endpoints, $issuerid) {
+        global $CFG;
+
+        $table = new html_table();
+        $table->head  = [
+            get_string('name'),
+            get_string('url'),
+            get_string('edit'),
+        ];
+        $table->attributes['class'] = 'admintable generaltable';
+        $data = [];
+
+        $index = 0;
+
+        foreach ($endpoints as $endpoint) {
+            // Name.
+            $name = $endpoint->get('name');
+            $namecell = new html_table_cell(s($name));
+            $namecell->header = true;
+
+            // Url.
+            $url = $endpoint->get('url');
+            $urlcell = new html_table_cell(s($url));
+
+            $links = '';
+            // Action links.
+            $editparams = ['issuerid' => $issuerid, 'endpointid' => $endpoint->get('id'), 'action' => 'edit'];
+            $editurl = new moodle_url('/admin/tool/oauth2/endpoints.php', $editparams);
+            $editlink = html_writer::link($editurl, $this->pix_icon('t/edit', get_string('edit')));
+            $links .= ' ' . $editlink;
+
+            // Delete.
+            $deleteparams = ['issuerid' => $issuerid, 'endpointid' => $endpoint->get('id'), 'action' => 'delete'];
+            $deleteurl = new moodle_url('/admin/tool/oauth2/endpoints.php', $deleteparams);
+            $deletelink = html_writer::link($deleteurl, $this->pix_icon('t/delete', get_string('delete')));
+            $links .= ' ' . $deletelink;
+
+            $editcell = new html_table_cell($links);
+
+            $row = new html_table_row([
+                $namecell,
+                $urlcell,
+                $editcell,
+            ]);
+
+            $data[] = $row;
+            $index++;
+        }
+        $table->data = $data;
+        return html_writer::table($table);
+    }
+
+    /**
+     * This function will render one beautiful table with all the user_field_mappings.
+     *
+     * @param \core\oauth2\user_field_mapping[] $userfieldmappings - list of all user_field_mappings.
+     * @param int $issuerid
+     * @return string HTML to output.
+     */
+    public function user_field_mappings_table($userfieldmappings, $issuerid) {
+        global $CFG;
+
+        $table = new html_table();
+        $table->head  = [
+            get_string('userfieldexternalfield', 'tool_oauth2'),
+            get_string('userfieldinternalfield', 'tool_oauth2'),
+            get_string('edit'),
+        ];
+        $table->attributes['class'] = 'admintable generaltable';
+        $data = [];
+
+        $index = 0;
+
+        foreach ($userfieldmappings as $userfieldmapping) {
+            // External field.
+            $externalfield = $userfieldmapping->get('externalfield');
+            $externalfieldcell = new html_table_cell(s($externalfield));
+
+            // Internal field.
+            $internalfield = $userfieldmapping->get('internalfield');
+            $internalfieldcell = new html_table_cell(s($internalfield));
+
+            $links = '';
+            // Action links.
+            $editparams = ['issuerid' => $issuerid, 'userfieldmappingid' => $userfieldmapping->get('id'), 'action' => 'edit'];
+            $editurl = new moodle_url('/admin/tool/oauth2/userfieldmappings.php', $editparams);
+            $editlink = html_writer::link($editurl, $this->pix_icon('t/edit', get_string('edit')));
+            $links .= ' ' . $editlink;
+
+            // Delete.
+            $deleteparams = ['issuerid' => $issuerid, 'userfieldmappingid' => $userfieldmapping->get('id'), 'action' => 'delete'];
+            $deleteurl = new moodle_url('/admin/tool/oauth2/userfieldmappings.php', $deleteparams);
+            $deletelink = html_writer::link($deleteurl, $this->pix_icon('t/delete', get_string('delete')));
+            $links .= ' ' . $deletelink;
+
+            $editcell = new html_table_cell($links);
+
+            $row = new html_table_row([
+                $externalfieldcell,
+                $internalfieldcell,
+                $editcell,
+            ]);
+
+            $data[] = $row;
+            $index++;
+        }
+        $table->data = $data;
+        return html_writer::table($table);
+    }
+}

admin/tool/oauth2/classes/privacy/provider.php

@@ -0,0 +1,46 @@
+<?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/>.
+
+/**
+ * Privacy Subsystem implementation for tool_oauth2.
+ *
+ * @package    tool_oauth2
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_oauth2\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_oauth2 implementing null_provider.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason(): string {
+        return 'privacy:metadata';
+    }
+}