on-demand release 3.7dev+
[moodle.git] / admin / tool / mobile / classes / api.php
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1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * Class for Moodle Mobile tools.
19 *
20 * @package tool_mobile
21 * @copyright 2016 Juan Leyva
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 * @since Moodle 3.1
24 */
25namespace tool_mobile;
26
27use core_component;
28use core_plugin_manager;
0002056f 29use context_system;
c951f1fe 30use moodle_url;
961c9549 31use moodle_exception;
b2551b4c 32use lang_string;
66a159f8 33use curl;
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34
35/**
b2551b4c 36 * API exposed by tool_mobile, to be used mostly by external functions and the plugin settings.
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37 *
38 * @copyright 2016 Juan Leyva
39 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
40 * @since Moodle 3.1
41 */
42class api {
43
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44 /** @var int to identify the login via app. */
45 const LOGIN_VIA_APP = 1;
46 /** @var int to identify the login via browser. */
47 const LOGIN_VIA_BROWSER = 2;
48 /** @var int to identify the login via an embedded browser. */
49 const LOGIN_VIA_EMBEDDED_BROWSER = 3;
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50 /** @var int seconds an auto-login key will expire. */
51 const LOGIN_KEY_TTL = 60;
c951f1fe 52
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53 /**
54 * Returns a list of Moodle plugins supporting the mobile app.
55 *
56 * @return array an array of objects containing the plugin information
57 */
58 public static function get_plugins_supporting_mobile() {
59 global $CFG;
60 require_once($CFG->libdir . '/adminlib.php');
61
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62 $cachekey = 'mobileplugins';
63 if (!isloggedin()) {
64 $cachekey = 'authmobileplugins'; // Use a different cache for not logged users.
65 }
66
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67 // Check if we can return this from cache.
68 $cache = \cache::make('tool_mobile', 'plugininfo');
7b1c55ea 69 $pluginsinfo = $cache->get($cachekey);
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70 if ($pluginsinfo !== false) {
71 return (array)$pluginsinfo;
72 }
73
b2478ed0 74 $pluginsinfo = [];
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75 // For not logged users return only auth plugins.
76 // This is to avoid anyone (not being a registered user) to obtain and download all the site remote add-ons.
77 if (!isloggedin()) {
78 $plugintypes = array('auth' => $CFG->dirroot.'/auth');
79 } else {
80 $plugintypes = core_component::get_plugin_types();
81 }
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82
83 foreach ($plugintypes as $plugintype => $unused) {
84 // We need to include files here.
85 $pluginswithfile = core_component::get_plugin_list_with_file($plugintype, 'db' . DIRECTORY_SEPARATOR . 'mobile.php');
86 foreach ($pluginswithfile as $plugin => $notused) {
87 $path = core_component::get_plugin_directory($plugintype, $plugin);
88 $component = $plugintype . '_' . $plugin;
89 $version = get_component_version($component);
90
30fccfcd 91 require("$path/db/mobile.php");
b2478ed0 92 foreach ($addons as $addonname => $addoninfo) {
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93
94 // Add handlers (for site add-ons).
95 $handlers = !empty($addoninfo['handlers']) ? $addoninfo['handlers'] : array();
96 $handlers = json_encode($handlers); // JSON formatted, since it is a complex structure that may vary over time.
97
98 // Now language strings used by the app.
99 $lang = array();
100 if (!empty($addoninfo['lang'])) {
101 $stringmanager = get_string_manager();
102 $langs = $stringmanager->get_list_of_translations();
103 foreach ($langs as $langid => $langname) {
104 foreach ($addoninfo['lang'] as $stringinfo) {
105 $lang[$langid][$stringinfo[0]] =
106 $stringmanager->get_string($stringinfo[0], $stringinfo[1], null, $langid);
107 }
108 }
109 }
110 $lang = json_encode($lang);
111
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112 $plugininfo = array(
113 'component' => $component,
114 'version' => $version,
115 'addon' => $addonname,
b4baee42 116 'dependencies' => !empty($addoninfo['dependencies']) ? $addoninfo['dependencies'] : array(),
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117 'fileurl' => '',
118 'filehash' => '',
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119 'filesize' => 0,
120 'handlers' => $handlers,
121 'lang' => $lang,
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122 );
123
124 // All the mobile packages must be under the plugin mobile directory.
1c668c3c 125 $package = $path . '/mobile/' . $addonname . '.zip';
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126 if (file_exists($package)) {
127 $plugininfo['fileurl'] = $CFG->wwwroot . '' . str_replace($CFG->dirroot, '', $package);
128 $plugininfo['filehash'] = sha1_file($package);
129 $plugininfo['filesize'] = filesize($package);
130 }
131 $pluginsinfo[] = $plugininfo;
132 }
133 }
134 }
30fccfcd 135
7b1c55ea 136 $cache->set($cachekey, $pluginsinfo);
30fccfcd 137
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138 return $pluginsinfo;
139 }
140
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141 /**
142 * Returns a list of the site public settings, those not requiring authentication.
143 *
144 * @return array with the settings and warnings
145 */
7c1cb3bf 146 public static function get_public_config() {
5d5e30c6 147 global $CFG, $SITE, $PAGE, $OUTPUT;
851b2919 148 require_once($CFG->libdir . '/authlib.php');
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149
150 $context = context_system::instance();
151 // We need this to make work the format text functions.
152 $PAGE->set_context($context);
153
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154 list($authinstructions, $notusedformat) = external_format_text($CFG->auth_instructions, FORMAT_MOODLE, $context->id);
155 list($maintenancemessage, $notusedformat) = external_format_text($CFG->maintenance_message, FORMAT_MOODLE, $context->id);
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156 $settings = array(
157 'wwwroot' => $CFG->wwwroot,
672f4836 158 'httpswwwroot' => $CFG->wwwroot,
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159 'sitename' => external_format_string($SITE->fullname, $context->id, true),
160 'guestlogin' => $CFG->guestloginbutton,
161 'rememberusername' => $CFG->rememberusername,
162 'authloginviaemail' => $CFG->authloginviaemail,
163 'registerauth' => $CFG->registerauth,
2479a7c4 164 'forgottenpasswordurl' => clean_param($CFG->forgottenpasswordurl, PARAM_URL), // We may expect a mailto: here.
e2fe3bc0 165 'authinstructions' => $authinstructions,
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166 'authnoneenabled' => (int) is_enabled_auth('none'),
167 'enablewebservices' => $CFG->enablewebservices,
168 'enablemobilewebservice' => $CFG->enablemobilewebservice,
169 'maintenanceenabled' => $CFG->maintenance_enabled,
e2fe3bc0 170 'maintenancemessage' => $maintenancemessage,
91fff391 171 'mobilecssurl' => !empty($CFG->mobilecssurl) ? $CFG->mobilecssurl : '',
b2551b4c 172 'tool_mobile_disabledfeatures' => get_config('tool_mobile', 'disabledfeatures'),
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173 'country' => clean_param($CFG->country, PARAM_NOTAGS),
174 'agedigitalconsentverification' => \core_auth\digital_consent::is_age_digital_consent_verification_enabled(),
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175 'autolang' => $CFG->autolang,
176 'lang' => clean_param($CFG->lang, PARAM_LANG), // Avoid breaking WS because of incorrect package langs.
177 'langmenu' => $CFG->langmenu,
178 'langlist' => $CFG->langlist,
179 'locale' => $CFG->locale,
0002056f 180 );
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181
182 $typeoflogin = get_config('tool_mobile', 'typeoflogin');
183 // Not found, edge case.
184 if ($typeoflogin === false) {
185 $typeoflogin = self::LOGIN_VIA_APP; // Defaults to via app.
186 }
187 $settings['typeoflogin'] = $typeoflogin;
188
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189 // Check if the user can sign-up to return the launch URL in that case.
190 $cansignup = signup_is_enabled();
191
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192 $url = new moodle_url("/$CFG->admin/tool/mobile/launch.php");
193 $settings['launchurl'] = $url->out(false);
5d5e30c6 194
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195 // Check that we are receiving a moodle_url object, themes can override get_logo_url and may return incorrect values.
196 if (($logourl = $OUTPUT->get_logo_url()) && $logourl instanceof moodle_url) {
818d40a9 197 $settings['logourl'] = clean_param($logourl->out(false), PARAM_URL);
5d5e30c6 198 }
6703e031 199 if (($compactlogourl = $OUTPUT->get_compact_logo_url()) && $compactlogourl instanceof moodle_url) {
818d40a9 200 $settings['compactlogourl'] = clean_param($compactlogourl->out(false), PARAM_URL);
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201 }
202
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203 // Identity providers.
204 $authsequence = get_enabled_auth_plugins(true);
205 $identityproviders = \auth_plugin_base::get_identity_providers($authsequence);
206 $identityprovidersdata = \auth_plugin_base::prepare_identity_providers_for_output($identityproviders, $OUTPUT);
207 if (!empty($identityprovidersdata)) {
208 $settings['identityproviders'] = $identityprovidersdata;
209 }
210
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211 // If age is verified, return also the admin contact details.
212 if ($settings['agedigitalconsentverification']) {
213 $settings['supportname'] = clean_param($CFG->supportname, PARAM_NOTAGS);
214 $settings['supportemail'] = clean_param($CFG->supportemail, PARAM_EMAIL);
215 }
216
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217 return $settings;
218 }
219
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220 /**
221 * Returns a list of site configurations, filtering by section.
222 *
223 * @param string $section section name
224 * @return stdClass object containing the settings
225 */
226 public static function get_config($section) {
227 global $CFG, $SITE;
228
229 $settings = new \stdClass;
230 $context = context_system::instance();
231 $isadmin = has_capability('moodle/site:config', $context);
232
233 if (empty($section) or $section == 'frontpagesettings') {
234 require_once($CFG->dirroot . '/course/format/lib.php');
235 // First settings that anyone can deduce.
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236 $settings->fullname = external_format_string($SITE->fullname, $context->id);
237 $settings->shortname = external_format_string($SITE->shortname, $context->id);
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238
239 // Return to a var instead of directly to $settings object because of differences between
240 // list() in php5 and php7. {@link http://php.net/manual/en/function.list.php}
241 $formattedsummary = external_format_text($SITE->summary, $SITE->summaryformat,
e2fe3bc0 242 $context->id);
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243 $settings->summary = $formattedsummary[0];
244 $settings->summaryformat = $formattedsummary[1];
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245 $settings->frontpage = $CFG->frontpage;
246 $settings->frontpageloggedin = $CFG->frontpageloggedin;
247 $settings->maxcategorydepth = $CFG->maxcategorydepth;
248 $settings->frontpagecourselimit = $CFG->frontpagecourselimit;
89b909f6 249 $settings->numsections = course_get_format($SITE)->get_last_section_number();
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250 $settings->newsitems = $SITE->newsitems;
251 $settings->commentsperpage = $CFG->commentsperpage;
252
253 // Now, admin settings.
254 if ($isadmin) {
255 $settings->defaultfrontpageroleid = $CFG->defaultfrontpageroleid;
256 }
257 }
258
259 if (empty($section) or $section == 'sitepolicies') {
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260 $manager = new \core_privacy\local\sitepolicy\manager();
261 $settings->sitepolicy = ($sitepolicy = $manager->get_embed_url()) ? $sitepolicy->out(false) : '';
262 $settings->sitepolicyhandler = $CFG->sitepolicyhandler;
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263 $settings->disableuserimages = $CFG->disableuserimages;
264 }
265
266 if (empty($section) or $section == 'gradessettings') {
267 require_once($CFG->dirroot . '/user/lib.php');
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268 $settings->mygradesurl = user_mygrades_url();
269 // The previous function may return moodle_url instances or plain string URLs.
270 if ($settings->mygradesurl instanceof moodle_url) {
271 $settings->mygradesurl = $settings->mygradesurl->out(false);
272 }
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273 }
274
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275 if (empty($section) or $section == 'mobileapp') {
276 $settings->tool_mobile_forcelogout = get_config('tool_mobile', 'forcelogout');
af1b6043 277 $settings->tool_mobile_customlangstrings = get_config('tool_mobile', 'customlangstrings');
b2551b4c 278 $settings->tool_mobile_disabledfeatures = get_config('tool_mobile', 'disabledfeatures');
63d142e2 279 $settings->tool_mobile_custommenuitems = get_config('tool_mobile', 'custommenuitems');
04df75ce 280 $settings->tool_mobile_apppolicy = get_config('tool_mobile', 'apppolicy');
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281 }
282
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283 return $settings;
284 }
285
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286 /*
287 * Check if all the required conditions are met to allow the auto-login process continue.
288 *
289 * @param int $userid current user id
290 * @since Moodle 3.2
291 * @throws moodle_exception
292 */
293 public static function check_autologin_prerequisites($userid) {
294 global $CFG;
295
296 if (!$CFG->enablewebservices or !$CFG->enablemobilewebservice) {
297 throw new moodle_exception('enablewsdescription', 'webservice');
298 }
299
300 if (!is_https()) {
301 throw new moodle_exception('httpsrequired', 'tool_mobile');
302 }
303
304 if (has_capability('moodle/site:config', context_system::instance(), $userid) or is_siteadmin($userid)) {
305 throw new moodle_exception('autologinnotallowedtoadmins', 'tool_mobile');
306 }
307 }
308
309 /**
310 * Creates an auto-login key for the current user, this key is restricted by time and ip address.
311 *
312 * @return string the key
313 * @since Moodle 3.2
314 */
315 public static function get_autologin_key() {
316 global $USER;
317 // Delete previous keys.
318 delete_user_key('tool_mobile', $USER->id);
319
320 // Create a new key.
321 $iprestriction = getremoteaddr();
322 $validuntil = time() + self::LOGIN_KEY_TTL;
323 return create_user_key('tool_mobile', $USER->id, null, $iprestriction, $validuntil);
324 }
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325
326 /**
327 * Get a list of the Mobile app features.
328 *
329 * @return array array with the features grouped by theirs ubication in the app.
330 * @since Moodle 3.3
331 */
332 public static function get_features_list() {
333 global $CFG;
334
335 $general = new lang_string('general');
336 $mainmenu = new lang_string('mainmenu', 'tool_mobile');
337 $course = new lang_string('course');
338 $modules = new lang_string('managemodules');
c1720141 339 $blocks = new lang_string('blocks');
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340 $user = new lang_string('user');
341 $files = new lang_string('files');
342 $remoteaddons = new lang_string('remoteaddons', 'tool_mobile');
343
344 $availablemods = core_plugin_manager::instance()->get_plugins_of_type('mod');
345 $coursemodules = array();
c3e745b7 346 $appsupportedmodules = array('assign', 'book', 'chat', 'choice', 'data', 'feedback', 'folder', 'forum', 'glossary', 'imscp',
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347 'label', 'lesson', 'lti', 'page', 'quiz', 'resource', 'scorm', 'survey', 'url', 'wiki', 'workshop');
348
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349 foreach ($availablemods as $mod) {
350 if (in_array($mod->name, $appsupportedmodules)) {
351 $coursemodules['$mmCourseDelegate_mmaMod' . ucfirst($mod->name)] = $mod->displayname;
352 }
353 }
354
355 $remoteaddonslist = array();
356 $mobileplugins = self::get_plugins_supporting_mobile();
357 foreach ($mobileplugins as $plugin) {
358 $displayname = core_plugin_manager::instance()->plugin_name($plugin['component']) . " - " . $plugin['addon'];
d6c06935 359 $remoteaddonslist['sitePlugin_' . $plugin['component'] . '_' . $plugin['addon']] = $displayname;
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360
361 }
362
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363 // Display blocks.
364 $availableblocks = core_plugin_manager::instance()->get_plugins_of_type('block');
365 $courseblocks = array();
366 $appsupportedblocks = array(
367 'activity_modules' => 'CoreBlockDelegate_AddonBlockActivityModules',
368 'site_main_menu' => 'CoreBlockDelegate_AddonBlockSiteMainMenu',
369 'myoverview' => 'CoreBlockDelegate_AddonBlockMyOverview',
370 'timeline' => 'CoreBlockDelegate_AddonBlockTimeline',
371 'recentlyaccessedcourses' => 'CoreBlockDelegate_AddonBlockRecentlyAccessedCourses',
372 'starredcourses' => 'CoreBlockDelegate_AddonBlockStarredCourses',
373 'recentlyaccesseditems' => 'CoreBlockDelegate_AddonBlockRecentlyAccessedItems',
374 );
375
376 foreach ($availableblocks as $block) {
377 if (isset($appsupportedblocks[$block->name])) {
378 $courseblocks[$appsupportedblocks[$block->name]] = $block->displayname;
379 }
380 }
381
b2551b4c 382 $features = array(
3c8de97d 383 'NoDelegate_CoreOffline' => new lang_string('offlineuse', 'tool_mobile'),
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384 '$mmLoginEmailSignup' => new lang_string('startsignup'),
385 "$mainmenu" => array(
386 '$mmSideMenuDelegate_mmCourses' => new lang_string('mycourses'),
387 '$mmSideMenuDelegate_mmaFrontpage' => new lang_string('sitehome'),
388 '$mmSideMenuDelegate_mmaGrades' => new lang_string('grades', 'grades'),
389 '$mmSideMenuDelegate_mmaCompetency' => new lang_string('myplans', 'tool_lp'),
390 '$mmSideMenuDelegate_mmaNotifications' => new lang_string('notifications', 'message'),
391 '$mmSideMenuDelegate_mmaMessages' => new lang_string('messages', 'message'),
392 '$mmSideMenuDelegate_mmaCalendar' => new lang_string('calendar', 'calendar'),
393 '$mmSideMenuDelegate_mmaFiles' => new lang_string('files'),
394 '$mmSideMenuDelegate_website' => new lang_string('webpage'),
395 '$mmSideMenuDelegate_help' => new lang_string('help'),
396 ),
397 "$course" => array(
398 '$mmCoursesDelegate_search' => new lang_string('search'),
399 '$mmCoursesDelegate_mmaCompetency' => new lang_string('competencies', 'competency'),
400 '$mmCoursesDelegate_mmaParticipants' => new lang_string('participants'),
401 '$mmCoursesDelegate_mmaGrades' => new lang_string('grades', 'grades'),
402 '$mmCoursesDelegate_mmaCourseCompletion' => new lang_string('coursecompletion', 'completion'),
403 '$mmCoursesDelegate_mmaNotes' => new lang_string('notes', 'notes'),
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404 'NoDelegate_CoreCourseDownload' => new lang_string('downloadcourse', 'tool_mobile'),
405 'NoDelegate_CoreCoursesDownload' => new lang_string('downloadcourses', 'tool_mobile'),
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406 ),
407 "$user" => array(
408 '$mmUserDelegate_mmaBadges' => new lang_string('badges', 'badges'),
409 '$mmUserDelegate_mmaCompetency:learningPlan' => new lang_string('competencies', 'competency'),
410 '$mmUserDelegate_mmaCourseCompletion:viewCompletion' => new lang_string('coursecompletion', 'completion'),
411 '$mmUserDelegate_mmaGrades:viewGrades' => new lang_string('grades', 'grades'),
412 '$mmUserDelegate_mmaMessages:sendMessage' => new lang_string('sendmessage', 'message'),
413 '$mmUserDelegate_mmaMessages:addContact' => new lang_string('addcontact', 'message'),
414 '$mmUserDelegate_mmaMessages:blockContact' => new lang_string('blockcontact', 'message'),
415 '$mmUserDelegate_mmaNotes:addNote' => new lang_string('addnewnote', 'notes'),
416 '$mmUserDelegate_picture' => new lang_string('userpic'),
417 ),
418 "$files" => array(
419 'files_privatefiles' => new lang_string('privatefiles'),
420 'files_sitefiles' => new lang_string('sitefiles'),
421 'files_upload' => new lang_string('upload'),
422 ),
423 "$modules" => $coursemodules,
c1720141 424 "$blocks" => $courseblocks,
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425 );
426
427 if (!empty($remoteaddonslist)) {
428 $features["$remoteaddons"] = $remoteaddonslist;
429 }
430
431 return $features;
432 }
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433
434 /**
435 * This function check the current site for potential configuration issues that may prevent the mobile app to work.
436 *
437 * @return array list of potential issues
438 * @since Moodle 3.4
439 */
440 public static function get_potential_config_issues() {
441 global $CFG;
442 require_once($CFG->dirroot . "/lib/filelib.php");
443 require_once($CFG->dirroot . '/message/lib.php');
444
445 $warnings = array();
446
447 $curl = new curl();
448 // Return certificate information and verify the certificate.
449 $curl->setopt(array('CURLOPT_CERTINFO' => 1, 'CURLOPT_SSL_VERIFYPEER' => true));
450 $httpswwwroot = str_replace('http:', 'https:', $CFG->wwwroot); // Force https url.
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451 // Check https using a page not redirecting or returning exceptions.
452 $curl->head($httpswwwroot . "/$CFG->admin/tool/mobile/mobile.webmanifest.php");
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453 $info = $curl->get_info();
454
455 // First of all, check the server certificate (if any).
456 if (empty($info['http_code']) or ($info['http_code'] >= 400)) {
457 $warnings[] = ['nohttpsformobilewarning', 'admin'];
458 } else {
459 // Check the certificate is not self-signed or has an untrusted-root.
460 // This may be weak in some scenarios (when the curl SSL verifier is outdated).
461 if (empty($info['certinfo'])) {
462 $warnings[] = ['selfsignedoruntrustedcertificatewarning', 'tool_mobile'];
463 } else {
464 $timenow = time();
465 $expectedissuer = null;
466 foreach ($info['certinfo'] as $cert) {
467 // Check if the signature algorithm is weak (Android won't work with SHA-1).
468 if ($cert['Signature Algorithm'] == 'sha1WithRSAEncryption' || $cert['Signature Algorithm'] == 'sha1WithRSA') {
469 $warnings[] = ['insecurealgorithmwarning', 'tool_mobile'];
470 }
471 // Check certificate start date.
472 if (strtotime($cert['Start date']) > $timenow) {
473 $warnings[] = ['invalidcertificatestartdatewarning', 'tool_mobile'];
474 }
475 // Check certificate end date.
476 if (strtotime($cert['Expire date']) < $timenow) {
477 $warnings[] = ['invalidcertificateexpiredatewarning', 'tool_mobile'];
478 }
479 // Check the chain.
480 if ($expectedissuer !== null) {
481 if ($expectedissuer !== $cert['Subject'] || $cert['Subject'] === $cert['Issuer']) {
482 $warnings[] = ['invalidcertificatechainwarning', 'tool_mobile'];
483 }
484 }
485 $expectedissuer = $cert['Issuer'];
486 }
487 }
488 }
489 // Now check typical configuration problems.
490 if ((int) $CFG->userquota === PHP_INT_MAX) {
491 // In old Moodle version was a text so was possible to have numeric values > PHP_INT_MAX.
492 $warnings[] = ['invaliduserquotawarning', 'tool_mobile'];
493 }
494 // Check ADOdb debug enabled.
495 if (get_config('auth_db', 'debugauthdb') || get_config('enrol_database', 'debugdb')) {
496 $warnings[] = ['adodbdebugwarning', 'tool_mobile'];
497 }
498 // Check display errors on.
499 if (!empty($CFG->debugdisplay)) {
500 $warnings[] = ['displayerrorswarning', 'tool_mobile'];
501 }
502 // Check mobile notifications.
503 $processors = get_message_processors();
504 $enabled = false;
505 foreach ($processors as $processor => $status) {
506 if ($processor == 'airnotifier' && $status->enabled) {
507 $enabled = true;
508 }
509 }
510 if (!$enabled) {
511 $warnings[] = ['mobilenotificationsdisabledwarning', 'tool_mobile'];
512 }
513
514 return $warnings;
515 }
b2478ed0 516}