local.inc.php 62 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. use ChamiloSession as Session;
  4. /**
  5. *
  6. * SCRIPT PURPOSE
  7. *
  8. * This script initializes and manages Chamilo session information. It
  9. * keeps available session information up to date.
  10. *
  11. * You can request a course id. It will check if the course Id requested is the
  12. * same as the current one. If it isn't it will update session information from
  13. * the database. You can also force the course reset if you want ($cidReset).
  14. *
  15. * All the course information is stored in the $_course array.
  16. *
  17. * You can request a group id. The script will check if the group id requested is the
  18. * same as the current one. If it isn't it will update session information from
  19. * the database. You can also force the course reset if you want ($gidReset).
  20. *
  21. * The course id is stored in $_cid session variable.
  22. * The group id is stored in $_gid session variable.
  23. *
  24. *
  25. * VARIABLES AFFECTING THE SCRIPT BEHAVIOR
  26. *
  27. * string $login
  28. * string $password
  29. * boolean $logout
  30. *
  31. * string $cidReq : course id requested
  32. * boolean $cidReset : ask for a course Reset, if no $cidReq is provided in the
  33. * same time, all course informations is removed from the
  34. * current session
  35. *
  36. * int $gidReq : group Id requested
  37. * boolean $gidReset : ask for a group Reset, if no $gidReq is provided in the
  38. * same time, all group informations is removed from the
  39. * current session
  40. *
  41. *
  42. * VARIABLES SET AND RETURNED BY THE SCRIPT
  43. *
  44. * All the variables below are set and returned by this script.
  45. *
  46. * USER VARIABLES
  47. *
  48. * string $_user ['firstName' ]
  49. * string $_user ['lastName' ]
  50. * string $_user ['mail' ]
  51. * string $_user ['lastLogin' ]
  52. * string $_user ['official_code']
  53. * string $_user ['picture_uri' ]
  54. * string $_user['user_id']
  55. *
  56. * boolean $is_platformAdmin
  57. * boolean $is_allowedCreateCourse
  58. *
  59. * COURSE VARIABLES
  60. * see the function get_course_info_with_category
  61. * boolean $is_courseMember
  62. * boolean $is_courseTutor
  63. * boolean $is_courseAdmin
  64. *
  65. *
  66. * GROUP VARIABLES
  67. *
  68. * int $_gid (the group id)
  69. *
  70. *
  71. * IMPORTANT ADVICE FOR DEVELOPERS
  72. *
  73. * We strongly encourage developers to use a connection layer at the top of
  74. * their scripts rather than use these variables, as they are, inside the core
  75. * of their scripts. It will make code maintenance much easier.
  76. *
  77. * Many if the functions you need you can already find in the
  78. * main_api.lib.php
  79. *
  80. * We encourage you to use functions to access these global "kernel" variables.
  81. * You can add them to e.g. the main API library.
  82. *
  83. *
  84. * SCRIPT STRUCTURE
  85. *
  86. * 1. The script determines if there is an authentication attempt. This part
  87. * only chek if the login name and password are valid. Afterwards, it set the
  88. * $_user['user_id'] (user id) and the $uidReset flag. Other user informations are retrieved
  89. * later. It's also in this section that optional external authentication
  90. * devices step in.
  91. *
  92. * 2. The script determines what other session informations have to be set or
  93. * reset, setting correctly $cidReset (for course) and $gidReset (for group).
  94. *
  95. * 3. If needed, the script retrieves the other user informations (first name,
  96. * last name, ...) and stores them in session.
  97. *
  98. * 4. If needed, the script retrieves the course information and stores them
  99. * in session
  100. *
  101. * 5. The script initializes the user permission status and permission for the
  102. * course level
  103. *
  104. * 6. If needed, the script retrieves group informations an store them in
  105. * session.
  106. *
  107. * 7. The script initializes the user status and permission for the group level.
  108. *
  109. * @package chamilo.include
  110. */
  111. // Verified if exists the username and password in session current
  112. // Facebook connexion, if activated
  113. if (api_is_facebook_auth_activated() && !api_get_user_id()) {
  114. require_once api_get_path(SYS_PATH).'main/auth/external_login/facebook.inc.php';
  115. if (isset($facebook_config['appId']) && isset($facebook_config['secret'])) {
  116. facebookConnect();
  117. }
  118. }
  119. // Conditional login
  120. if (isset($_SESSION['conditional_login']['uid']) && $_SESSION['conditional_login']['can_login'] === true) {
  121. $uData = api_get_user_info($_SESSION['conditional_login']['uid']);
  122. ConditionalLogin::check_conditions($uData);
  123. $_user['user_id'] = $_SESSION['conditional_login']['uid'];
  124. $_user['status'] = $uData['status'];
  125. Session::write('_user', $_user);
  126. Session::erase('conditional_login');
  127. $uidReset = true;
  128. Event::event_login($_user['user_id']);
  129. }
  130. // parameters passed via GET
  131. $logout = isset($_GET["logout"]) ? $_GET["logout"] : '';
  132. $gidReq = isset($_GET["gidReq"]) ? intval($_GET["gidReq"]) : '';
  133. //this fixes some problems with generic functionalities like
  134. //My Agenda & What's New icons linking to courses
  135. // $cidReq can be set in the index.php file of a course-area
  136. $cidReq = isset($cidReq) ? Database::escape_string($cidReq) : '';
  137. // $cidReq can be set in URL-parameter
  138. $cidReq = isset($_GET["cidReq"]) ? Database::escape_string($_GET["cidReq"]) : $cidReq;
  139. $cidReset = isset($cidReset) ? Database::escape_string($cidReset) : '';
  140. // $cidReset can be set in URL-parameter
  141. $cidReset = (
  142. isset($_GET['cidReq']) &&
  143. ((isset($_SESSION['_cid']) && $_GET['cidReq'] != $_SESSION['_cid']) || (!isset($_SESSION['_cid'])))
  144. ) ? Database::escape_string($_GET["cidReq"]) : $cidReset;
  145. // $cDir is a special url param sent from a redirection from /courses/[DIR]/index.php...
  146. // It replaces cidReq in some opportunities
  147. $cDir = (!empty($_GET['cDir']) ? $_GET['cDir'] : null);
  148. // if there is a cDir parameter in the URL and $cidReq could not be determined
  149. if (isset($cDir) && empty($cidReq)) {
  150. $c = CourseManager::get_course_id_from_path($cDir);
  151. if ($c) {
  152. $cidReq = $c;
  153. }
  154. if (empty($cidReset)) {
  155. if (!isset($_SESSION['_cid']) OR (isset($_SESSION['_cid']) && $cidReq != $_SESSION['_cid'])) {
  156. $cidReset = $cidReq;
  157. }
  158. }
  159. }
  160. $gidReset = isset($gidReset) ? $gidReset : '';
  161. // $gidReset can be set in URL-parameter
  162. // parameters passed via POST
  163. $login = isset($_POST["login"]) ? $_POST["login"] : '';
  164. // register if the user is just logging in, in order to redirect him
  165. $logging_in = false;
  166. /* MAIN CODE */
  167. if (!empty($_SESSION['_user']['user_id']) && !($login || $logout)) {
  168. // uid is in session => login already done, continue with this value
  169. $_user['user_id'] = $_SESSION['_user']['user_id'];
  170. //Check if we have to reset user data
  171. //This param can be used to reload user data if user has been logged by external script
  172. if (isset($_SESSION['_user']['uidReset']) && $_SESSION['_user']['uidReset']) {
  173. $uidReset = true;
  174. }
  175. } else {
  176. if (isset($_user['user_id'])) {
  177. unset($_user['user_id']);
  178. }
  179. $termsAndCondition = Session::read('term_and_condition');
  180. // Platform legal terms and conditions
  181. if (api_get_setting('allow_terms_conditions') === 'true' &&
  182. api_get_setting('load_term_conditions_section') === 'login'
  183. ) {
  184. if (isset($_POST['login']) && isset($_POST['password']) &&
  185. isset($termsAndCondition['user_id'])
  186. ) {
  187. // user id
  188. $user_id = $termsAndCondition['user_id'];
  189. // Update the terms & conditions
  190. $legal_type = null;
  191. //verify type of terms and conditions
  192. if (isset($_POST['legal_info'])) {
  193. $info_legal = explode(':', $_POST['legal_info']);
  194. $legal_type = LegalManager::get_type_of_terms_and_conditions(
  195. $info_legal[0],
  196. $info_legal[1]
  197. );
  198. }
  199. // is necessary verify check
  200. if ($legal_type == 1) {
  201. if ((isset($_POST['legal_accept']) && $_POST['legal_accept']=='1')) {
  202. $legal_option = true;
  203. } else {
  204. $legal_option = false;
  205. }
  206. }
  207. // no is check option
  208. if ($legal_type == 0) {
  209. $legal_option = true;
  210. }
  211. if (isset($_POST['legal_accept_type']) && $legal_option === true) {
  212. $cond_array = explode(':', $_POST['legal_accept_type']);
  213. if (!empty($cond_array[0]) && !empty($cond_array[1])) {
  214. $time = time();
  215. $condition_to_save = intval($cond_array[0]).':'.intval($cond_array[1]).':'.$time;
  216. UserManager::update_extra_field_value(
  217. $user_id,
  218. 'legal_accept',
  219. $condition_to_save
  220. );
  221. }
  222. }
  223. }
  224. }
  225. // IF cas is activated and user isn't logged in
  226. if (api_get_setting('cas_activate') == 'true') {
  227. $cas_activated = true;
  228. } else {
  229. $cas_activated = false;
  230. }
  231. $cas_login = false;
  232. if ($cas_activated && !isset($_user['user_id']) && !isset($_POST['login']) && !$logout) {
  233. require_once(api_get_path(SYS_PATH).'main/auth/cas/authcas.php');
  234. $cas_login = cas_is_authenticated();
  235. }
  236. if ((isset($_POST['login']) && isset($_POST['password'])) || ($cas_login)) {
  237. // $login && $password are given to log in
  238. if ($cas_login && empty($_POST['login'])) {
  239. $login = $cas_login;
  240. } else {
  241. $login = $_POST['login'];
  242. $password = $_POST['password'];
  243. }
  244. $userManager = UserManager::getManager();
  245. $userRepository = UserManager::getRepository();
  246. // Lookup the user in the main database
  247. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  248. $sql = "SELECT user_id, username, password, auth_source, active, expiration_date, status, salt
  249. FROM $user_table
  250. WHERE username = '".Database::escape_string($login)."'";
  251. $result = Database::query($sql);
  252. $captchaValidated = true;
  253. $captcha = api_get_setting('allow_captcha');
  254. $allowCaptcha = $captcha == 'true';
  255. if (Database::num_rows($result) > 0) {
  256. $uData = Database::fetch_array($result, 'ASSOC');
  257. if ($allowCaptcha) {
  258. // Checking captcha
  259. if (isset($_POST['captcha'])) {
  260. // Check captcha
  261. $captchaText = $_POST['captcha'];
  262. /** @var Text_CAPTCHA $obj */
  263. $obj = isset($_SESSION['template.lib']) ? $_SESSION['template.lib'] : null;
  264. if ($obj) {
  265. $obj->getPhrase();
  266. if ($obj->getPhrase() != $captchaText) {
  267. $captchaValidated = false;
  268. } else {
  269. $captchaValidated = true;
  270. }
  271. }
  272. if (isset($_SESSION['captcha_question'])) {
  273. $captcha_question = $_SESSION['captcha_question'];
  274. $captcha_question->destroy();
  275. }
  276. }
  277. // Redirect to login page
  278. if ($captchaValidated == false) {
  279. $loginFailed = true;
  280. Session::erase('_uid');
  281. Session::write('loginFailed', '1');
  282. header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=wrong_captcha');
  283. exit;
  284. }
  285. // Check if account is blocked by captcha user extra field see function api_block_account_captcha()
  286. $blockedUntilDate = api_get_user_blocked_by_captcha($login);
  287. if (isset($blockedUntilDate) && !empty($blockedUntilDate)) {
  288. if (time() > api_strtotime($blockedUntilDate, 'UTC')) {
  289. api_clean_account_captcha($login);
  290. } else {
  291. $loginFailed = true;
  292. Session::erase('_uid');
  293. Session::write('loginFailed', '1');
  294. header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=blocked_by_captcha');
  295. exit;
  296. }
  297. }
  298. }
  299. if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE ||
  300. $uData['auth_source'] == CAS_AUTH_SOURCE
  301. ) {
  302. $validPassword = UserManager::isPasswordValid(
  303. $uData['password'],
  304. $password,
  305. $uData['salt']
  306. );
  307. // Check the user's password
  308. if (($validPassword || $cas_login) &&
  309. (trim($login) == $uData['username'])
  310. ) {
  311. $update_type = UserManager::get_extra_user_data_by_field(
  312. $uData['user_id'],
  313. 'update_type'
  314. );
  315. $update_type = $update_type['update_type'];
  316. if (!empty($extAuthSource[$update_type]['updateUser'])
  317. && file_exists($extAuthSource[$update_type]['updateUser'])
  318. ) {
  319. include_once $extAuthSource[$update_type]['updateUser'];
  320. }
  321. // Check if the account is active (not locked)
  322. if ($uData['active'] == '1') {
  323. // Check if the expiration date has not been reached
  324. if ($uData['expiration_date'] > date('Y-m-d H:i:s')
  325. || empty($uData['expiration_date'])
  326. ) {
  327. global $_configuration;
  328. if (api_is_multiple_url_enabled()) {
  329. // Check if user is an admin
  330. $my_user_is_admin = UserManager::is_admin($uData['user_id']);
  331. // This user is subscribed in these sites => $my_url_list
  332. $my_url_list = api_get_access_url_from_user($uData['user_id']);
  333. //Check the access_url configuration setting if
  334. // the user is registered in the access_url_rel_user table
  335. //Getting the current access_url_id of the platform
  336. $current_access_url_id = api_get_current_access_url_id();
  337. if ($my_user_is_admin === false) {
  338. // the user have the permissions to enter at this site
  339. if (is_array($my_url_list) &&
  340. in_array($current_access_url_id, $my_url_list)
  341. ) {
  342. ConditionalLogin::check_conditions($uData);
  343. $_user['user_id'] = $uData['user_id'];
  344. $_user['status'] = $uData['status'];
  345. Session::write('_user', $_user);
  346. Event::event_login($_user['user_id']);
  347. $logging_in = true;
  348. } else {
  349. $loginFailed = true;
  350. Session::erase('_uid');
  351. Session::write('loginFailed', '1');
  352. // Fix cas redirection loop
  353. // https://support.chamilo.org/issues/6124
  354. $location = api_get_path(WEB_PATH)
  355. .'index.php?loginFailed=1&error=access_url_inactive';
  356. if ($cas_login) {
  357. cas_logout(null, $location);
  358. } else {
  359. header('Location: '.$location);
  360. }
  361. exit;
  362. }
  363. } else {
  364. //Only admins of the "main" (first) Chamilo portal can login wherever they want
  365. if (in_array(1, $my_url_list)) {
  366. //Check if this admin have the access_url_id = 1 which means the principal
  367. ConditionalLogin::check_conditions($uData);
  368. $_user['user_id'] = $uData['user_id'];
  369. $_user['status'] = $uData['status'];
  370. Session::write('_user', $_user);
  371. Event::event_login($_user['user_id']);
  372. $logging_in = true;
  373. } else {
  374. //This means a secondary admin wants to login so we check as he's a normal user
  375. if (in_array($current_access_url_id, $my_url_list)) {
  376. $_user['user_id'] = $uData['user_id'];
  377. $_user['status'] = $uData['status'];
  378. Session::write('_user', $_user);
  379. Event::event_login($_user['user_id']);
  380. $logging_in = true;
  381. } else {
  382. $loginFailed = true;
  383. Session::erase('_uid');
  384. Session::write('loginFailed', '1');
  385. header(
  386. 'Location: '.api_get_path(WEB_PATH)
  387. .'index.php?loginFailed=1&error=access_url_inactive'
  388. );
  389. exit;
  390. }
  391. }
  392. }
  393. } else {
  394. ConditionalLogin::check_conditions($uData);
  395. $_user['user_id'] = $uData['user_id'];
  396. $_user['status'] = $uData['status'];
  397. Session::write('_user', $_user);
  398. Event::event_login($uData['user_id']);
  399. $logging_in = true;
  400. }
  401. } else {
  402. $loginFailed = true;
  403. Session::erase('_uid');
  404. Session::write('loginFailed', '1');
  405. header(
  406. 'Location: '.api_get_path(WEB_PATH)
  407. .'index.php?loginFailed=1&error=account_expired'
  408. );
  409. exit;
  410. }
  411. } else {
  412. $loginFailed = true;
  413. Session::erase('_uid');
  414. Session::write('loginFailed', '1');
  415. header(
  416. 'Location: '.api_get_path(WEB_PATH)
  417. .'index.php?loginFailed=1&error=account_inactive'
  418. );
  419. exit;
  420. }
  421. } else {
  422. // login failed: username or password incorrect
  423. $loginFailed = true;
  424. Session::erase('_uid');
  425. Session::write('loginFailed', '1');
  426. if ($allowCaptcha) {
  427. if (isset($_SESSION['loginFailedCount'])) {
  428. $_SESSION['loginFailedCount']++;
  429. } else {
  430. $_SESSION['loginFailedCount'] = 1;
  431. }
  432. $numberMistakesToBlockAccount = api_get_setting('captcha_number_mistakes_to_block_account');
  433. if (isset($_SESSION['loginFailedCount'])) {
  434. if ($_SESSION['loginFailedCount'] >= $numberMistakesToBlockAccount) {
  435. api_block_account_captcha($login);
  436. }
  437. }
  438. }
  439. header(
  440. 'Location: '.api_get_path(WEB_PATH)
  441. .'index.php?loginFailed=1&error=user_password_incorrect'
  442. );
  443. exit;
  444. }
  445. if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id']) {
  446. //first login for a not self registred
  447. //e.g. registered by a teacher
  448. //do nothing (code may be added later)
  449. }
  450. } elseif (!empty($extAuthSource[$uData['auth_source']]['login'])
  451. && file_exists($extAuthSource[$uData['auth_source']]['login'])
  452. ) {
  453. /*
  454. * Process external authentication
  455. * on the basis of the given login name
  456. */
  457. $loginFailed = true; // Default initialisation. It could
  458. // change after the external authentication
  459. $key = $uData['auth_source']; //'ldap','shibboleth'...
  460. /* >>>>>>>> External authentication modules <<<<<<<<< */
  461. // see configuration.php to define these
  462. include_once($extAuthSource[$key]['login']);
  463. /* >>>>>>>> External authentication modules <<<<<<<<< */
  464. } else { // no standard Chamilo login - try external authentification
  465. //huh... nothing to do... we shouldn't get here
  466. error_log(
  467. 'Chamilo Authentication file defined in'.
  468. ' $extAuthSource could not be found - this might prevent'.
  469. ' your system from doing the corresponding authentication'.
  470. ' process',
  471. 0
  472. );
  473. }
  474. } else {
  475. // login failed, Database::num_rows($result) <= 0
  476. $loginFailed = true; // Default initialisation. It could
  477. // change after the external authentication
  478. /*
  479. * In this section:
  480. * there is no entry for the $login user in the Chamilo
  481. * database. This also means there is no auth_source for the user.
  482. * We let all external procedures attempt to add him/her
  483. * to the system.
  484. *
  485. * Process external login on the basis
  486. * of the authentication source list
  487. * provided by the configuration settings.
  488. * If the login succeeds, for going further,
  489. * Chamilo needs the $_user['user_id'] variable to be
  490. * set and registered in the session. It's the
  491. * responsability of the external login script
  492. * to provide this $_user['user_id'].
  493. */
  494. if (isset($extAuthSource) && is_array($extAuthSource)) {
  495. foreach ($extAuthSource as $thisAuthSource) {
  496. if (isset($thisAuthSource['newUser']) && file_exists($thisAuthSource['newUser'])) {
  497. include_once($thisAuthSource['newUser']);
  498. } else {
  499. error_log(
  500. 'Chamilo Authentication external file' .
  501. ' could not be found - this might prevent your system from using'.
  502. ' the authentication process in the user creation process',
  503. 0
  504. );
  505. }
  506. }
  507. } //end if is_array($extAuthSource)
  508. if ($loginFailed) { //If we are here username given is wrong
  509. Session::write('loginFailed', '1');
  510. header(
  511. 'Location: '.api_get_path(WEB_PATH)
  512. .'index.php?loginFailed=1&error=user_password_incorrect'
  513. );
  514. exit;
  515. }
  516. } //end else login failed
  517. } elseif (api_get_setting('sso_authentication') === 'true'
  518. && !in_array('webservices', explode('/', $_SERVER['REQUEST_URI']))
  519. ) {
  520. /**
  521. * TODO:
  522. * - Work on a better validation for webservices paths. Current is very poor and exit
  523. */
  524. $subsso = api_get_setting('sso_authentication_subclass');
  525. if (!empty($subsso)) {
  526. require_once api_get_path(SYS_CODE_PATH).'auth/sso/sso.'.$subsso.'.class.php';
  527. $subsso = 'sso'.$subsso;
  528. $osso = new $subsso(); //load the subclass
  529. } else {
  530. $osso = new sso();
  531. }
  532. if (isset($_SESSION['_user']['user_id'])) {
  533. if ($logout) {
  534. // Make custom redirect after logout
  535. online_logout($_SESSION['_user']['user_id'], false);
  536. $osso->logout(); //redirects and exits
  537. }
  538. } elseif (!$logout) {
  539. // Handle cookie from Master Server
  540. $forceSsoRedirect = api_get_setting('sso_force_redirect');
  541. if ($forceSsoRedirect === 'true') {
  542. // all users to be redirected unless they are connected (removed req on sso_cookie)
  543. $redirectToMasterConditions = !isset($_GET['sso_referer']) && !isset($_GET['loginFailed']);
  544. } else {
  545. // Users to still see the homepage without connecting
  546. $redirectToMasterConditions = !isset($_GET['sso_referer']) && !isset($_GET['loginFailed']) && isset($_GET['sso_cookie']);
  547. }
  548. if ($redirectToMasterConditions) {
  549. // Redirect to master server
  550. $osso->ask_master();
  551. } elseif (isset($_GET['sso_cookie'])) {
  552. // Here we are going to check the origin of
  553. // what the call says should be used for
  554. // authentication, and ensure we know it
  555. $matches_domain = false;
  556. if (isset($_GET['sso_referer'])) {
  557. $protocol = api_get_setting('sso_authentication_protocol');
  558. // sso_authentication_domain can list
  559. // several, comma-separated, domains
  560. $master_urls = preg_split('/,/', api_get_setting('sso_authentication_domain'));
  561. if (!empty($master_urls)) {
  562. $master_auth_uri = api_get_setting('sso_authentication_auth_uri');
  563. foreach ($master_urls as $mu) {
  564. if (empty($mu)) {
  565. continue;
  566. }
  567. // For each URL, check until we find *one* that matches the $_GET['sso_referer'],
  568. // then skip other possibilities
  569. // Do NOT compare the whole referer, as this might cause confusing errors with friendly urls,
  570. // like in Drupal /?q=user& vs /user?
  571. $referrer = substr($_GET['sso_referer'], 0, strrpos($_GET['sso_referer'], '/'));
  572. if ($protocol.trim($mu) === $referrer) {
  573. $matches_domain = true;
  574. break;
  575. }
  576. }
  577. } else {
  578. error_log(
  579. 'Your sso_authentication_master param is empty. '.
  580. 'Check the platform configuration, security section. '.
  581. 'It can be a list of comma-separated domains'
  582. );
  583. }
  584. }
  585. if ($matches_domain) {
  586. //make all the process of checking
  587. //if the user exists (delegated to the sso class)
  588. $osso->check_user();
  589. } else {
  590. error_log('Check the sso_referer URL in your script, it doesn\'t match any of the possibilities');
  591. //Request comes from unknown source
  592. $loginFailed = true;
  593. Session::erase('_uid');
  594. Session::write('loginFailed', '1');
  595. header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=unrecognize_sso_origin');
  596. exit;
  597. }
  598. }
  599. //end logout ... else ... login
  600. } elseif ($logout) {
  601. //if there was an attempted logout without a previous login, log
  602. // this anonymous user out as well but avoid redirect
  603. online_logout(null, false);
  604. $osso->logout(); //redirects and exits
  605. }
  606. } elseif (api_get_setting('openid_authentication')=='true') {
  607. if (!empty($_POST['openid_url'])) {
  608. include api_get_path(SYS_CODE_PATH).'auth/openid/login.php';
  609. openid_begin(trim($_POST['openid_url']), api_get_path(WEB_PATH).'index.php');
  610. //this last function should trigger a redirect, so we can die here safely
  611. die('Openid login redirection should be in progress');
  612. } elseif (!empty($_GET['openid_identity'])) {
  613. //it's usual for PHP to replace '.' (dot) by '_' (underscore) in URL parameters
  614. include(api_get_path(SYS_CODE_PATH).'auth/openid/login.php');
  615. $res = openid_complete($_GET);
  616. if ($res['status'] == 'success') {
  617. $id1 = Database::escape_string($res['openid.identity']);
  618. //have another id with or without the final '/'
  619. $id2 = (substr($id1, -1, 1)=='/'?substr($id1, 0, -1):$id1.'/');
  620. //lookup the user in the main database
  621. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  622. $sql = "SELECT user_id, username, password, auth_source, active, expiration_date
  623. FROM $user_table
  624. WHERE openid = '$id1'
  625. OR openid = '$id2' ";
  626. $result = Database::query($sql);
  627. if ($result !== false) {
  628. if (Database::num_rows($result)>0) {
  629. $uData = Database::fetch_array($result);
  630. if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE) {
  631. //the authentification of this user is managed by Chamilo itself
  632. // check if the account is active (not locked)
  633. if ($uData['active']=='1') {
  634. // check if the expiration date has not been reached
  635. if ($uData['expiration_date'] > date('Y-m-d H:i:s')
  636. || empty($uData['expiration_date'])
  637. ) {
  638. $_user['user_id'] = $uData['user_id'];
  639. $_user['status'] = $uData['status'];
  640. Session::write('_user', $_user);
  641. Event::event_login($_user['user_id']);
  642. } else {
  643. $loginFailed = true;
  644. Session::erase('_uid');
  645. Session::write('loginFailed', '1');
  646. header('Location: index.php?loginFailed=1&error=account_expired');
  647. exit;
  648. }
  649. } else {
  650. $loginFailed = true;
  651. Session::erase('_uid');
  652. Session::write('loginFailed', '1');
  653. header('Location: index.php?loginFailed=1&error=account_inactive');
  654. exit;
  655. }
  656. if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id']) {
  657. //first login for a not self registred
  658. //e.g. registered by a teacher
  659. //do nothing (code may be added later)
  660. }
  661. }
  662. } else {
  663. // Redirect to the subscription form
  664. header(
  665. 'Location: '.api_get_path(WEB_CODE_PATH)
  666. .'auth/inscription.php?username='.$res['openid.sreg.nickname']
  667. .'&email='.$res['openid.sreg.email']
  668. .'&openid='.$res['openid.identity']
  669. .'&openid_msg=idnotfound'
  670. );
  671. Session::write('loginFailed', '1');
  672. exit;
  673. //$loginFailed = true;
  674. }
  675. } else {
  676. $loginFailed = true;
  677. }
  678. } else {
  679. $loginFailed = true;
  680. }
  681. }
  682. } elseif (KeyAuth::is_enabled()) {
  683. $success = KeyAuth::instance()->login();
  684. if ($success) {
  685. $use_anonymous = false;
  686. }
  687. }
  688. $uidReset = true;
  689. // $cidReset = true;
  690. // $gidReset = true;
  691. } // end else
  692. // Now check for anonymous user mode
  693. if (isset($use_anonymous) && $use_anonymous) {
  694. //if anonymous mode is set, then try to set the current user as anonymous
  695. //if he doesn't have a login yet
  696. api_set_anonymous();
  697. } else {
  698. //if anonymous mode is not set, then check if this user is anonymous. If it
  699. //is, clean it from being anonymous (make him a nobody :-))
  700. api_clear_anonymous();
  701. }
  702. // if the requested course is different from the course in session
  703. if (!empty($cidReq) && (!isset($_SESSION['_cid']) ||
  704. (isset($_SESSION['_cid']) && $cidReq != $_SESSION['_cid']))
  705. ) {
  706. $cidReset = true;
  707. $gidReset = true; // As groups depend from courses, group id is reset
  708. }
  709. /* USER INIT */
  710. if (isset($uidReset) && $uidReset) {
  711. // session data refresh requested
  712. unset($_SESSION['_user']['uidReset']);
  713. $is_platformAdmin = false;
  714. $is_allowedCreateCourse = false;
  715. if (isset($_user['user_id']) && $_user['user_id'] && !api_is_anonymous()) {
  716. //if (isset($_user['user_id']) && $_user['user_id']) {
  717. // a uid is given (log in succeeded)
  718. $_SESSION['loginFailed'] = false;
  719. unset($_SESSION['loginFailedCount']);
  720. unset($_SESSION['loginToBlock']);
  721. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  722. $admin_table = Database::get_main_table(TABLE_MAIN_ADMIN);
  723. $track_e_login = Database::get_main_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  724. $sql = "SELECT user.*, a.user_id is_admin, login.login_date
  725. FROM $user_table
  726. LEFT JOIN $admin_table a
  727. ON user.user_id = a.user_id
  728. LEFT JOIN $track_e_login login
  729. ON user.user_id = login.login_user_id
  730. WHERE user.user_id = '".$_user['user_id']."'
  731. ORDER BY login.login_date DESC LIMIT 1";
  732. $result = Database::query($sql);
  733. if (Database::num_rows($result) > 0) {
  734. // Extracting the user data
  735. $uData = Database::fetch_array($result);
  736. $_user = _api_format_user($uData, false);
  737. $is_platformAdmin = (bool) (!is_null($uData['is_admin']));
  738. $is_allowedCreateCourse = (bool) (($uData ['status'] == COURSEMANAGER) || (api_get_setting('drhCourseManagerRights') && $uData['status'] == DRH));
  739. ConditionalLogin::check_conditions($uData);
  740. Session::write('_user', $_user);
  741. UserManager::update_extra_field_value($_user['user_id'], 'already_logged_in', 'true');
  742. Session::write('is_platformAdmin', $is_platformAdmin);
  743. Session::write('is_allowedCreateCourse', $is_allowedCreateCourse);
  744. } else {
  745. header('location:'.api_get_path(WEB_PATH));
  746. //exit("WARNING UNDEFINED UID !! ");
  747. }
  748. } else {
  749. if (!api_is_anonymous()) {
  750. // no uid => logout or Anonymous
  751. Session::erase('_user');
  752. Session::erase('_uid');
  753. }
  754. }
  755. Session::write('is_platformAdmin', $is_platformAdmin);
  756. Session::write('is_allowedCreateCourse', $is_allowedCreateCourse);
  757. } else { // continue with the previous values
  758. $_user = $_SESSION['_user'];
  759. $is_platformAdmin = isset($_SESSION['is_platformAdmin']) ? $_SESSION['is_platformAdmin'] : false;
  760. $is_allowedCreateCourse = isset($_SESSION['is_allowedCreateCourse']) ? $_SESSION['is_allowedCreateCourse'] : false;
  761. }
  762. if (!isset($_SESSION['login_as'])) {
  763. $save_course_access = true;
  764. $_course = Session::read('_course');
  765. if ($_course && isset($_course['real_id'])) {
  766. // The value $_dont_save_user_course_access should be added before the call of global.inc.php see the main/inc/chat.ajax.php file
  767. // Disables the updates in the TRACK_E_COURSE_ACCESS table
  768. if (isset($_dont_save_user_course_access) && $_dont_save_user_course_access == true) {
  769. $save_course_access = false;
  770. }
  771. if ($save_course_access) {
  772. $course_tracking_table = Database:: get_main_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
  773. /*
  774. * When $_configuration['session_lifetime'] is too big 100 hours (in order to let users take exercises with no problems)
  775. * the function Tracking::get_time_spent_on_the_course() returns big values (200h) due the condition:
  776. * login_course_date > now() - INTERVAL $session_lifetime SECOND
  777. *
  778. */
  779. /*
  780. if (isset($_configuration['session_lifetime'])) {
  781. $session_lifetime = $_configuration['session_lifetime'];
  782. } else {
  783. $session_lifetime = 3600; // 1 hour
  784. }*/
  785. $session_lifetime = 3600; // 1 hour
  786. $time = api_get_utc_datetime();
  787. if (isset($_user['user_id']) && !empty($_user['user_id'])) {
  788. //We select the last record for the current course in the course tracking table
  789. //But only if the login date is < than now + max_life_time
  790. $sql = "SELECT course_access_id
  791. FROM $course_tracking_table
  792. WHERE
  793. user_id = ".intval($_user['user_id'])." AND
  794. c_id = ".$_course['real_id']." AND
  795. session_id = ".api_get_session_id()." AND
  796. login_course_date > '$time' - INTERVAL $session_lifetime SECOND
  797. ORDER BY login_course_date DESC LIMIT 0,1";
  798. $result = Database::query($sql);
  799. if (Database::num_rows($result) > 0) {
  800. $i_course_access_id = Database::result($result, 0, 0);
  801. // We update the course tracking table
  802. $sql = "UPDATE $course_tracking_table
  803. SET logout_course_date = '$time', counter = counter+1
  804. WHERE
  805. course_access_id = ".intval($i_course_access_id)." AND
  806. session_id = ".api_get_session_id();
  807. Database::query($sql);
  808. } else {
  809. $ip = api_get_real_ip();
  810. $sql = "INSERT INTO $course_tracking_table (c_id, user_ip, user_id, login_course_date, logout_course_date, counter, session_id)
  811. VALUES('".$_course['real_id']."', '".$ip."', '".$_user['user_id']."', '$time', '$time', '1','".api_get_session_id()."')";
  812. Database::query($sql);
  813. }
  814. }
  815. }
  816. }
  817. }
  818. /* COURSE INIT */
  819. if (isset($cidReset) && $cidReset) {
  820. // Course session data refresh requested or empty data
  821. if ($cidReq) {
  822. $_course = api_get_course_info($cidReq);
  823. if (!empty($_course)) {
  824. //@TODO real_cid should be cid, for working with numeric course id
  825. $_real_cid = $_course['real_id'];
  826. $_cid = $_course['code'];
  827. Session::write('_real_cid', $_real_cid);
  828. Session::write('_cid', $_cid);
  829. Session::write('_course', $_course);
  830. // if a session id has been given in url, we store the session
  831. // Database Table Definitions
  832. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  833. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  834. $tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  835. if (!empty($_GET['id_session'])) {
  836. $sql = 'SELECT name FROM '.$tbl_session . '
  837. WHERE id="'.intval($_GET['id_session']) . '"';
  838. $rs = Database::query($sql);
  839. if (Database::num_rows($rs)) {
  840. list($_SESSION['session_name']) = Database::fetch_array($rs);
  841. $_SESSION['id_session'] = intval($_GET['id_session']);
  842. } else {
  843. api_not_allowed(true);
  844. }
  845. } else {
  846. Session::erase('session_name');
  847. Session::erase('id_session');
  848. }
  849. if (!empty($_GET['gidReq'])) {
  850. $_SESSION['_gid'] = intval($_GET['gidReq']);
  851. } else {
  852. Session::erase('_gid');
  853. }
  854. if (!isset($_SESSION['login_as'])) {
  855. //Course login
  856. if (isset($_user['user_id'])) {
  857. Event::event_course_login(
  858. api_get_course_int_id(),
  859. api_get_user_id(),
  860. api_get_session_id()
  861. );
  862. }
  863. }
  864. } else {
  865. //exit("WARNING UNDEFINED CID !! ");
  866. header('location:'.api_get_path(WEB_PATH));
  867. }
  868. } else {
  869. Session::erase('_cid');
  870. Session::erase('_real_cid');
  871. Session::erase('_course');
  872. if (!empty($_SESSION)) {
  873. foreach ($_SESSION as $key => $session_item) {
  874. if (strpos($key, 'lp_autolaunch_') === false) {
  875. continue;
  876. } else {
  877. if (isset($_SESSION[$key])) {
  878. Session::erase($key);
  879. }
  880. }
  881. }
  882. }
  883. // Deleting session info.
  884. if (api_get_session_id()) {
  885. Session::erase('id_session');
  886. Session::erase('session_name');
  887. }
  888. if (api_get_group_id()) {
  889. Session::erase('_gid');
  890. }
  891. }
  892. } else {
  893. // Continue with the previous values
  894. if (empty($_SESSION['_course']) && !empty($_SESSION['_cid'])) {
  895. //Just in case $_course is empty we try to load if the c_id still exists
  896. $_course = api_get_course_info($_SESSION['_cid']);
  897. if (!empty($_course)) {
  898. $_real_cid = $_course['real_id'];
  899. $_cid = $_course['code'];
  900. Session::write('_real_cid', $_real_cid);
  901. Session::write('_cid', $_cid);
  902. Session::write('_course', $_course);
  903. }
  904. }
  905. if (empty($_SESSION['_course']) or empty($_SESSION['_cid'])) { //no previous values...
  906. $_cid = -1; // Set default values
  907. $_course = -1;
  908. } else {
  909. $_cid = $_SESSION['_cid'];
  910. $_course = $_SESSION['_course'];
  911. // these lines are useful for tracking. Indeed we can have lost the id_session and not the cid.
  912. // Moreover, if we want to track a course with another session it can be usefull
  913. if (!empty($_GET['id_session']) && is_numeric($_GET['id_session'])) {
  914. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  915. $sql = 'SELECT name FROM '.$tbl_session . ' WHERE id="'.intval($_GET['id_session']). '"';
  916. $rs = Database::query($sql);
  917. if (Database::num_rows($rs)) {
  918. list($_SESSION['session_name']) = Database::fetch_array($rs);
  919. $_SESSION['id_session'] = intval($_GET['id_session']);
  920. } else {
  921. api_not_allowed(true);
  922. }
  923. }
  924. if (!empty($_REQUEST['gidReq'])) {
  925. $_SESSION['_gid'] = intval($_REQUEST['gidReq']);
  926. $group_table = Database::get_course_table(TABLE_GROUP);
  927. $sql = "SELECT * FROM $group_table
  928. WHERE c_id = ".$_course['real_id']." AND id = '$gidReq'";
  929. $result = Database::query($sql);
  930. if (Database::num_rows($result) > 0) { // This group has recorded status related to this course
  931. $gpData = Database::fetch_array($result);
  932. $_gid = $gpData ['id'];
  933. Session::write('_gid', $_gid);
  934. }
  935. }
  936. }
  937. }
  938. /* COURSE / USER REL. INIT */
  939. $session_id = api_get_session_id();
  940. $user_id = isset($_user['user_id']) ? $_user['user_id'] : null;
  941. //Course permissions
  942. //if this code is uncommented in some platforms the is_courseAdmin is not correctly saved see BT#5789
  943. /*$is_courseAdmin = false; //course teacher
  944. $is_courseTutor = false; //course teacher - some rights
  945. $is_courseMember = false; //course student
  946. $is_courseCoach = false; //course coach
  947. */
  948. // Course - User permissions
  949. $is_sessionAdmin = false;
  950. $is_courseCoach = false; //course coach
  951. $is_courseAdmin = false;
  952. $is_courseTutor = false;
  953. $is_courseMember = false;
  954. if ((isset($uidReset) && $uidReset) || (isset($cidReset) && $cidReset)) {
  955. if (isset($_cid) && $_cid) {
  956. $my_user_id = isset($user_id) ? intval($user_id) : 0;
  957. $variable = 'accept_legal_'.$my_user_id.'_'.$_course['real_id'].'_'.$session_id;
  958. $user_pass_open_course = false;
  959. if (api_check_user_access_to_legal($_course['visibility']) && Session::read($variable)) {
  960. $user_pass_open_course = true;
  961. }
  962. // Checking if the user filled the course legal agreement
  963. if ($_course['activate_legal'] == 1 && !api_is_platform_admin() && !api_is_anonymous()) {
  964. $user_is_subscribed = CourseManager::is_user_accepted_legal(
  965. $user_id,
  966. $_course['id'],
  967. $session_id
  968. ) || $user_pass_open_course;
  969. if (!$user_is_subscribed) {
  970. $url = api_get_path(WEB_CODE_PATH).'course_info/legal.php?course_code='.$_course['code'].'&session_id='.$session_id;
  971. header('Location: '.$url);
  972. exit;
  973. }
  974. }
  975. // Platform legal terms and conditions
  976. if (api_get_setting('allow_terms_conditions') === 'true' &&
  977. api_get_setting('load_term_conditions_section') === 'course'
  978. ) {
  979. $termAndConditionStatus = api_check_term_condition($user_id);
  980. // @todo not sure why we need the login password and update_term_status
  981. if ($termAndConditionStatus === false) {
  982. Session::write('term_and_condition', array('user_id' => $user_id));
  983. } else {
  984. Session::erase('term_and_condition');
  985. }
  986. $termsAndCondition = Session::read('term_and_condition');
  987. if (isset($termsAndCondition['user_id'])) {
  988. // user id
  989. $user_id = $termsAndCondition['user_id'];
  990. // Update the terms & conditions
  991. $legal_type = null;
  992. // Verify type of terms and conditions
  993. if (isset($_POST['legal_info'])) {
  994. $info_legal = explode(':', $_POST['legal_info']);
  995. $legal_type = LegalManager::get_type_of_terms_and_conditions(
  996. $info_legal[0],
  997. $info_legal[1]
  998. );
  999. }
  1000. // is necessary verify check
  1001. if ($legal_type === 1) {
  1002. if (isset($_POST['legal_accept']) && $_POST['legal_accept'] == '1') {
  1003. $legal_option = true;
  1004. } else {
  1005. $legal_option = false;
  1006. }
  1007. }
  1008. // no is check option
  1009. if ($legal_type == 0) {
  1010. $legal_option = true;
  1011. }
  1012. if (isset($_POST['legal_accept_type']) && $legal_option === true) {
  1013. $cond_array = explode(':', $_POST['legal_accept_type']);
  1014. if (!empty($cond_array[0]) && !empty($cond_array[1])) {
  1015. $time = time();
  1016. $condition_to_save = intval($cond_array[0]).':'.intval($cond_array[1]).':'.$time;
  1017. UserManager::update_extra_field_value(
  1018. $user_id,
  1019. 'legal_accept',
  1020. $condition_to_save
  1021. );
  1022. }
  1023. }
  1024. $url = api_get_path(WEB_CODE_PATH).'auth/inscription.php';
  1025. header("Location:". $url);
  1026. exit;
  1027. }
  1028. }
  1029. }
  1030. if (isset($user_id) && $user_id && isset($_real_cid) && $_real_cid) {
  1031. //Check if user is subscribed in a course
  1032. $course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  1033. $sql = "SELECT * FROM $course_user_table
  1034. WHERE
  1035. user_id = '".$user_id."' AND
  1036. relation_type <> ".COURSE_RELATION_TYPE_RRHH." AND
  1037. c_id = '$_real_cid'";
  1038. $result = Database::query($sql);
  1039. $cuData = null;
  1040. if (Database::num_rows($result) > 0) { // this user have a recorded state for this course
  1041. $cuData = Database::fetch_array($result, 'ASSOC');
  1042. $is_courseAdmin = (bool)($cuData['status'] == 1);
  1043. $is_courseTutor = (bool)($cuData['is_tutor'] == 1);
  1044. $is_courseMember = true;
  1045. }
  1046. // We are in a session course? Check session permissions
  1047. if (!empty($session_id)) {
  1048. // I'm not the teacher of the course
  1049. if ($is_courseAdmin == false) {
  1050. // This user has no status related to this course
  1051. // The user is subscribed in a session? The user is a Session coach a Session admin ?
  1052. $tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
  1053. $tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
  1054. $tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1055. // Session coach, session admin or course coach admin
  1056. $sql = "SELECT session.id_coach, session_admin_id, session_rcru.user_id
  1057. FROM $tbl_session session, $tbl_session_course_user session_rcru
  1058. WHERE
  1059. session_rcru.session_id = session.id AND
  1060. session_rcru.c_id = '$_real_cid' AND
  1061. session_rcru.user_id = '$user_id' AND
  1062. session_rcru.session_id = $session_id AND
  1063. session_rcru.status = 2
  1064. ";
  1065. $result = Database::query($sql);
  1066. $row = Database::store_result($result);
  1067. // Am I a session admin?
  1068. if (isset($row) && isset($row[0]) && $row[0]['session_admin_id'] == $user_id) {
  1069. $is_courseMember = false;
  1070. $is_courseTutor = false;
  1071. $is_courseAdmin = false;
  1072. $is_courseCoach = false;
  1073. $is_sessionAdmin = true;
  1074. } else {
  1075. // Am I a session coach for this session?
  1076. $sql = "SELECT session.id, session.id_coach FROM $tbl_session session
  1077. INNER JOIN $tbl_session_course sc
  1078. ON sc.session_id = session.id
  1079. WHERE session.id = $session_id
  1080. AND session.id_coach = $user_id
  1081. AND sc.c_id = '$_real_cid'";
  1082. $result = Database::query($sql);
  1083. if (Database::num_rows($result)) {
  1084. $is_courseMember = true;
  1085. $is_courseTutor = false;
  1086. $is_courseCoach = true;
  1087. $is_sessionAdmin = false;
  1088. } else {
  1089. // Am I a course coach or a student?
  1090. $sql = "SELECT cu.user_id, cu.status
  1091. FROM $tbl_session_course_user cu
  1092. WHERE
  1093. c_id = '$_real_cid' AND
  1094. cu.user_id = '".$user_id."' AND
  1095. cu.session_id = '".$session_id."'
  1096. LIMIT 1";
  1097. $result = Database::query($sql);
  1098. if (Database::num_rows($result)) {
  1099. $row = Database::fetch_array($result, 'ASSOC');
  1100. $session_course_status = $row['status'];
  1101. switch ($session_course_status) {
  1102. case '2': // coach - teacher
  1103. $is_courseMember = true;
  1104. $is_courseTutor = true;
  1105. $is_courseCoach = true;
  1106. $is_sessionAdmin = false;
  1107. if (api_get_setting('extend_rights_for_coach') == 'true') {
  1108. $is_courseAdmin = true;
  1109. } else {
  1110. $is_courseAdmin = false;
  1111. }
  1112. break;
  1113. case '0': //Student
  1114. $is_courseMember = true;
  1115. $is_courseTutor = false;
  1116. $is_courseAdmin = false;
  1117. $is_courseCoach = false;
  1118. $is_sessionAdmin = false;
  1119. break;
  1120. default:
  1121. //unregister user
  1122. $is_courseMember = false;
  1123. $is_courseTutor = false;
  1124. $is_courseAdmin = false;
  1125. $is_sessionAdmin = false;
  1126. $is_courseCoach = false;
  1127. break;
  1128. }
  1129. } else {
  1130. // Unregister user
  1131. $is_courseMember = false;
  1132. $is_courseTutor = false;
  1133. $is_courseAdmin = false;
  1134. $is_sessionAdmin = false;
  1135. $is_courseCoach = false;
  1136. }
  1137. }
  1138. }
  1139. // Drh can enter to a course as an student see BT#6770
  1140. if (api_drh_can_access_all_session_content()) {
  1141. $sessionInfo = SessionManager::getSessionFollowedByDrh($user_id, $session_id);
  1142. if (!empty($sessionInfo) && !empty($sessionInfo['course_list'])) {
  1143. if (isset($sessionInfo['course_list'][$_course['real_id']])) {
  1144. $is_courseMember = true;
  1145. $is_courseTutor = false;
  1146. $is_courseCoach = false;
  1147. $is_sessionAdmin = false;
  1148. }
  1149. }
  1150. }
  1151. }
  1152. //If I'm the admin platform i'm a teacher of the course
  1153. if ($is_platformAdmin) {
  1154. $is_courseAdmin = true;
  1155. }
  1156. }
  1157. } else { // keys missing => not anymore in the course - user relation
  1158. // course
  1159. $is_courseMember = false;
  1160. $is_courseAdmin = false;
  1161. $is_courseTutor = false;
  1162. $is_courseCoach = false;
  1163. $is_sessionAdmin = false;
  1164. }
  1165. // Checking the course access
  1166. $is_allowed_in_course = false;
  1167. if (isset($_course) && isset($_course['visibility'])) {
  1168. switch ($_course['visibility']) {
  1169. case COURSE_VISIBILITY_OPEN_WORLD: //3
  1170. $is_allowed_in_course = true;
  1171. break;
  1172. case COURSE_VISIBILITY_OPEN_PLATFORM: //2
  1173. $courseCode = $_course['code'];
  1174. $isUserSubscribedInCourse = CourseManager::is_user_subscribed_in_course(
  1175. $user_id,
  1176. $courseCode,
  1177. $session_id
  1178. );
  1179. if (isset($user_id) && ($is_platformAdmin || $isUserSubscribedInCourse === true) && !api_is_anonymous($user_id)) {
  1180. $is_allowed_in_course = true;
  1181. }
  1182. break;
  1183. case COURSE_VISIBILITY_REGISTERED: //1
  1184. if ($is_platformAdmin || $is_courseMember) {
  1185. $is_allowed_in_course = true;
  1186. }
  1187. break;
  1188. case COURSE_VISIBILITY_CLOSED: //0
  1189. if ($is_platformAdmin || $is_courseAdmin) {
  1190. $is_allowed_in_course = true;
  1191. }
  1192. break;
  1193. case COURSE_VISIBILITY_HIDDEN: //4
  1194. if ($is_platformAdmin) {
  1195. $is_allowed_in_course = true;
  1196. }
  1197. }
  1198. }
  1199. if (!$is_platformAdmin) {
  1200. if (!$is_courseMember &&
  1201. isset($_course['registration_code']) &&
  1202. !empty($_course['registration_code']) &&
  1203. !Session::read('course_password_'.$_course['real_id'], false)
  1204. ) {
  1205. // if we are here we try to access to a course requiring password
  1206. if ($is_allowed_in_course) {
  1207. // the course visibility allows to access the course
  1208. // with a password
  1209. $url = api_get_path(WEB_CODE_PATH).'auth/set_temp_password.php?course_id='.$_course['real_id'].'&session_id='.$session_id;
  1210. header('Location: '.$url);
  1211. exit;
  1212. } else {
  1213. $is_courseMember = false;
  1214. $is_courseAdmin = false;
  1215. $is_courseTutor = false;
  1216. $is_courseCoach = false;
  1217. $is_sessionAdmin = false;
  1218. $is_allowed_in_course = false;
  1219. }
  1220. }
  1221. } // check the session visibility
  1222. if ($is_allowed_in_course == true) {
  1223. //if I'm in a session
  1224. if ($session_id != 0) {
  1225. if (!$is_platformAdmin) {
  1226. // admin is not affected to the invisible session mode
  1227. $session_visibility = api_get_session_visibility($session_id);
  1228. switch ($session_visibility) {
  1229. case SESSION_INVISIBLE:
  1230. $is_allowed_in_course = false;
  1231. break;
  1232. }
  1233. //checking date
  1234. }
  1235. }
  1236. }
  1237. // save the states
  1238. if (isset($is_courseAdmin)) {
  1239. Session::write('is_courseAdmin', $is_courseAdmin);
  1240. if ($is_courseAdmin) {
  1241. $is_allowed_in_course = true;
  1242. }
  1243. }
  1244. if (isset($is_courseMember)) {
  1245. Session::write('is_courseMember', $is_courseMember);
  1246. }
  1247. if (isset($is_courseTutor)) {
  1248. Session::write('is_courseTutor', $is_courseTutor);
  1249. if ($is_courseTutor) {
  1250. $is_allowed_in_course = true;
  1251. }
  1252. }
  1253. Session::write('is_courseCoach', $is_courseCoach);
  1254. Session::write('is_allowed_in_course', $is_allowed_in_course);
  1255. Session::write('is_sessionAdmin', $is_sessionAdmin);
  1256. } else {
  1257. // Continue with the previous values
  1258. $is_courseAdmin = isset($_SESSION['is_courseAdmin']) ? $_SESSION['is_courseAdmin'] : false;
  1259. $is_courseTutor = isset($_SESSION['is_courseTutor']) ? $_SESSION['is_courseTutor'] : false;
  1260. $is_courseCoach = isset($_SESSION['is_courseCoach']) ? $_SESSION['is_courseCoach'] : false;
  1261. $is_courseMember = isset($_SESSION['is_courseMember']) ? $_SESSION['is_courseMember'] : false;
  1262. $is_allowed_in_course = isset($_SESSION ['is_allowed_in_course']) ? $_SESSION ['is_allowed_in_course'] : false;
  1263. }
  1264. //set variable according to student_view_enabled choices
  1265. if (api_get_setting('student_view_enabled') == "true") {
  1266. if (isset($_GET['isStudentView'])) {
  1267. if ($_GET['isStudentView'] == 'true') {
  1268. if (isset($_SESSION['studentview'])) {
  1269. if (!empty($_SESSION['studentview'])) {
  1270. // switching to studentview
  1271. $_SESSION['studentview'] = 'studentview';
  1272. }
  1273. }
  1274. } elseif ($_GET['isStudentView'] == 'false') {
  1275. if (isset($_SESSION['studentview'])) {
  1276. if (!empty($_SESSION['studentview'])) {
  1277. // switching to teacherview
  1278. $_SESSION['studentview'] = 'teacherview';
  1279. }
  1280. }
  1281. }
  1282. } elseif (!empty($_SESSION['studentview'])) {
  1283. //all is fine, no change to that, obviously
  1284. } elseif (empty($_SESSION['studentview'])) {
  1285. // We are in teacherview here
  1286. $_SESSION['studentview'] = 'teacherview';
  1287. }
  1288. }
  1289. if (isset($_cid)) {
  1290. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1291. $time = api_get_utc_datetime();
  1292. $sql = "UPDATE $tbl_course SET last_visit = '$time' WHERE code='$_cid'";
  1293. Database::query($sql);
  1294. }
  1295. // direct login to course
  1296. if ((isset($cas_login) && $cas_login && exist_firstpage_parameter()) ||
  1297. ($logging_in && exist_firstpage_parameter())
  1298. ) {
  1299. $redirectCourseDir = api_get_firstpage_parameter();
  1300. api_delete_firstpage_parameter(); // delete the cookie
  1301. if (!isset($_SESSION['request_uri'])) {
  1302. if (CourseManager::get_course_id_from_path($redirectCourseDir)) {
  1303. $_SESSION['noredirection'] = false;
  1304. $_SESSION['request_uri'] = api_get_path(WEB_COURSE_PATH) . $redirectCourseDir . '/';
  1305. }
  1306. }
  1307. } elseif (api_user_is_login() && exist_firstpage_parameter()) {
  1308. $redirectCourseDir = api_get_firstpage_parameter();
  1309. api_delete_firstpage_parameter(); // delete the cookie
  1310. if (CourseManager::get_course_id_from_path($redirectCourseDir)) {
  1311. $_SESSION['noredirection'] = false;
  1312. $_SESSION['request_uri'] = api_get_path(WEB_COURSE_PATH) . $redirectCourseDir . '/';
  1313. }
  1314. }
  1315. Redirect::session_request_uri($logging_in, $user_id);