online.inc.php 17 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. use ChamiloSession as Session;
  4. /**
  5. * Code library for showing Who is online
  6. *
  7. * @author Istvan Mandak, principal author
  8. * @author Denes Nagy, principal author
  9. * @author Bart Mollet
  10. * @author Roan Embrechts, cleaning and bugfixing
  11. * @package chamilo.whoisonline
  12. */
  13. /**
  14. * Insert a login reference for the current user into the track_e_online stats table.
  15. * This table keeps trace of the last login. Nothing else matters (we don't keep traces of anything older)
  16. * @param int user id
  17. * @return void
  18. */
  19. function LoginCheck($uid)
  20. {
  21. $uid = (int) $uid;
  22. if (!empty($uid)) {
  23. $online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  24. $_course = api_get_course_info();
  25. $user_ip = '';
  26. if (!empty($_SERVER['REMOTE_ADDR'])) {
  27. $user_ip = Database::escape_string(api_get_real_ip());
  28. }
  29. $login_date = api_get_utc_datetime();
  30. $access_url_id = 1;
  31. if (api_get_multiple_access_url() && api_get_current_access_url_id() != -1) {
  32. $access_url_id = api_get_current_access_url_id();
  33. }
  34. $session_id = api_get_session_id();
  35. // if the $_course array exists this means we are in a course and we have to store this in the who's online table also
  36. // to have the x users in this course feature working
  37. if (is_array($_course) && count($_course) > 0 && !empty($_course['id'])) {
  38. $query = "REPLACE INTO ".$online_table." (login_id,login_user_id,login_date,user_ip, c_id, session_id, access_url_id)
  39. VALUES ($uid,$uid,'$login_date','$user_ip', '".$_course['real_id']."' , '$session_id' , '$access_url_id' )";
  40. } else {
  41. $query = "REPLACE INTO ".$online_table." (login_id,login_user_id,login_date,user_ip, c_id, session_id, access_url_id)
  42. VALUES ($uid,$uid,'$login_date','$user_ip', 0, '$session_id', '$access_url_id')";
  43. }
  44. Database::query($query);
  45. }
  46. }
  47. /**
  48. * @param int $userId
  49. */
  50. function preventMultipleLogin($userId)
  51. {
  52. $table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  53. $userId = intval($userId);
  54. if (api_get_setting('prevent_multiple_simultaneous_login') === 'true') {
  55. if (!empty($userId) && !api_is_anonymous()) {
  56. $isFirstLogin = Session::read('first_user_login');
  57. if (empty($isFirstLogin)) {
  58. $sql = "SELECT login_id FROM $table
  59. WHERE login_user_id = $userId
  60. LIMIT 1";
  61. $result = Database::query($sql);
  62. $loginData = array();
  63. if (Database::num_rows($result)) {
  64. $loginData = Database::fetch_array($result);
  65. }
  66. $userIsReallyOnline = user_is_online($userId);
  67. // Trying double login.
  68. if (!empty($loginData) && $userIsReallyOnline == true) {
  69. session_regenerate_id();
  70. Session::destroy();
  71. header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=multiple_connection_not_allowed');
  72. exit;
  73. } else {
  74. // First time
  75. Session::write('first_user_login', 1);
  76. }
  77. }
  78. }
  79. }
  80. }
  81. /**
  82. * This function handles the logout and is called whenever there is a $_GET['logout']
  83. * @param int $user_id
  84. * @param bool $logout_redirect
  85. * @return void Directly redirects the user or leaves him where he is, but doesn't return anything
  86. * @author Fernando P. García <fernando@develcuy.com>
  87. */
  88. function online_logout($user_id = null, $logout_redirect = false)
  89. {
  90. global $extAuthSource;
  91. // Database table definition
  92. $tbl_track_login = Database::get_main_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  93. if (empty($user_id)) {
  94. $user_id = isset($_GET['uid']) ? intval($_GET['uid']) : 0;
  95. }
  96. //Changing global chat status to offline
  97. if (api_is_global_chat_enabled()) {
  98. $chat = new Chat();
  99. $chat->setUserStatus(0);
  100. }
  101. // selecting the last login of the user
  102. $sql = "SELECT login_id, login_date
  103. FROM $tbl_track_login
  104. WHERE login_user_id = $user_id
  105. ORDER BY login_date DESC
  106. LIMIT 0,1";
  107. $q_last_connection = Database::query($sql);
  108. if (Database::num_rows($q_last_connection) > 0) {
  109. $i_id_last_connection = Database::result($q_last_connection, 0, "login_id");
  110. }
  111. if (!isset($_SESSION['login_as'])) {
  112. $current_date = api_get_utc_datetime();
  113. $sql = "UPDATE $tbl_track_login SET logout_date='".$current_date."'
  114. WHERE login_id='$i_id_last_connection'";
  115. Database::query($sql);
  116. }
  117. UserManager::loginDelete($user_id);
  118. //the following code enables the use of an external logout function.
  119. //example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
  120. // then a function called ldap_logout() inside that file
  121. // (using *authent_name*_logout as the function name) and the following code
  122. // will find and execute it
  123. $uinfo = api_get_user_info($user_id);
  124. if (($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource)) {
  125. if (is_array($extAuthSource[$uinfo['auth_source']])) {
  126. $subarray = $extAuthSource[$uinfo['auth_source']];
  127. if (!empty($subarray['logout']) && file_exists($subarray['logout'])) {
  128. require_once($subarray['logout']);
  129. $logout_function = $uinfo['auth_source'].'_logout';
  130. if (function_exists($logout_function)) {
  131. $logout_function($uinfo);
  132. }
  133. }
  134. }
  135. }
  136. CourseChatUtils::exitChat($user_id);
  137. session_regenerate_id();
  138. Session::destroy();
  139. if ($logout_redirect) {
  140. header("Location: ".api_get_path(WEB_PATH)."index.php");
  141. exit;
  142. }
  143. }
  144. /**
  145. * @param int $user_id
  146. * @return bool
  147. */
  148. function user_is_online($user_id)
  149. {
  150. $track_online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  151. $table_user = Database::get_main_table(TABLE_MAIN_USER);
  152. $access_url_id = api_get_current_access_url_id();
  153. $time_limit = api_get_setting('time_limit_whosonline');
  154. $online_time = time() - $time_limit * 60;
  155. $limit_date = api_get_utc_datetime($online_time);
  156. $user_id = intval($user_id);
  157. $query = " SELECT login_user_id, login_date
  158. FROM $track_online_table track
  159. INNER JOIN $table_user u
  160. ON (u.id=track.login_user_id)
  161. WHERE
  162. track.access_url_id = $access_url_id AND
  163. login_date >= '".$limit_date."' AND
  164. u.id = $user_id
  165. LIMIT 1 ";
  166. $result = Database::query($query);
  167. if (Database::num_rows($result)) {
  168. return true;
  169. }
  170. return false;
  171. }
  172. /**
  173. * Gives a list of people online now (and in the last $valid minutes)
  174. *
  175. * @param $from
  176. * @param $number_of_items
  177. * @param null $column
  178. * @param null $direction
  179. * @param null $time_limit
  180. * @param bool $friends
  181. * @return array|bool For each line, a list of user IDs and login dates, or FALSE on error or empty results
  182. */
  183. function who_is_online(
  184. $from,
  185. $number_of_items,
  186. $column = null,
  187. $direction = null,
  188. $time_limit = null,
  189. $friends = false
  190. ) {
  191. // Time limit in seconds?
  192. if (empty($time_limit)) {
  193. $time_limit = api_get_setting('time_limit_whosonline');
  194. } else {
  195. $time_limit = intval($time_limit);
  196. }
  197. $from = intval($from);
  198. $number_of_items = intval($number_of_items);
  199. if (empty($column)) {
  200. $column = 'picture_uri';
  201. if ($friends) {
  202. $column = 'login_date';
  203. }
  204. }
  205. if (empty($direction)) {
  206. $direction = 'DESC';
  207. } else {
  208. if (!in_array(strtolower($direction), array('asc', 'desc'))) {
  209. $direction = 'DESC';
  210. }
  211. }
  212. $online_time = time() - $time_limit * 60;
  213. $current_date = api_get_utc_datetime($online_time);
  214. $track_online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  215. $friend_user_table = Database::get_main_table(TABLE_MAIN_USER_REL_USER);
  216. $table_user = Database::get_main_table(TABLE_MAIN_USER);
  217. if ($friends) {
  218. // who friends from social network is online
  219. $query = "SELECT DISTINCT login_user_id, login_date
  220. FROM $track_online_table INNER JOIN $friend_user_table
  221. ON (friend_user_id = login_user_id)
  222. WHERE
  223. login_date >= '".$current_date."' AND
  224. friend_user_id <> '".api_get_user_id()."' AND
  225. relation_type='".USER_RELATION_TYPE_FRIEND."' AND
  226. user_id = '".api_get_user_id()."'
  227. ORDER BY $column $direction
  228. LIMIT $from, $number_of_items";
  229. } else {
  230. $query = "SELECT DISTINCT login_user_id, login_date
  231. FROM ".$track_online_table." e
  232. INNER JOIN ".$table_user." u ON (u.id = e.login_user_id)
  233. WHERE u.status != ".ANONYMOUS." AND login_date >= '".$current_date."'
  234. ORDER BY $column $direction
  235. LIMIT $from, $number_of_items";
  236. }
  237. if (api_get_multiple_access_url()) {
  238. $access_url_id = api_get_current_access_url_id();
  239. if ($access_url_id != -1) {
  240. if ($friends) {
  241. // friends from social network is online
  242. $query = "SELECT distinct login_user_id, login_date
  243. FROM $track_online_table track INNER JOIN $friend_user_table
  244. ON (friend_user_id = login_user_id)
  245. WHERE track.access_url_id = $access_url_id AND
  246. login_date >= '".$current_date."' AND
  247. friend_user_id <> '".api_get_user_id()."' AND
  248. relation_type='".USER_RELATION_TYPE_FRIEND."'
  249. ORDER BY $column $direction
  250. LIMIT $from, $number_of_items";
  251. } else {
  252. // all users online
  253. $query = "SELECT login_user_id, login_date
  254. FROM ".$track_online_table." track
  255. INNER JOIN ".$table_user." u
  256. ON (u.id=track.login_user_id)
  257. WHERE u.status != ".ANONYMOUS." AND track.access_url_id = $access_url_id AND
  258. login_date >= '".$current_date."'
  259. ORDER BY $column $direction
  260. LIMIT $from, $number_of_items";
  261. }
  262. }
  263. }
  264. //This query will show all registered users. Only for dev purposes.
  265. /*$query = "SELECT DISTINCT u.id as login_user_id, login_date
  266. FROM $track_online_table e, $table_user u
  267. GROUP by u.id
  268. ORDER BY $column $direction
  269. LIMIT $from, $number_of_items";*/
  270. $result = Database::query($query);
  271. if ($result) {
  272. $users_online = array();
  273. while (list($login_user_id, $login_date) = Database::fetch_row($result)) {
  274. $users_online[] = $login_user_id;
  275. }
  276. return $users_online;
  277. } else {
  278. return false;
  279. }
  280. }
  281. /**
  282. * @param string $time_limit
  283. */
  284. function who_is_online_count($time_limit = null, $friends = false)
  285. {
  286. if (empty($time_limit)) {
  287. $time_limit = api_get_setting('time_limit_whosonline');
  288. } else {
  289. $time_limit = intval($time_limit);
  290. }
  291. $track_online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  292. $friend_user_table = Database::get_main_table(TABLE_MAIN_USER_REL_USER);
  293. $table_user = Database::get_main_table(TABLE_MAIN_USER);
  294. $online_time = time() - $time_limit * 60;
  295. $current_date = api_get_utc_datetime($online_time);
  296. if ($friends) {
  297. // who friends from social network is online
  298. $query = "SELECT DISTINCT count(login_user_id) as count
  299. FROM $track_online_table INNER JOIN $friend_user_table
  300. ON (friend_user_id = login_user_id)
  301. WHERE
  302. login_date >= '$current_date' AND
  303. friend_user_id <> '".api_get_user_id()."' AND
  304. relation_type='".USER_RELATION_TYPE_FRIEND."' AND
  305. user_id = '".api_get_user_id()."' ";
  306. } else {
  307. // All users online
  308. $query = "SELECT count(login_id) as count
  309. FROM $track_online_table track INNER JOIN $table_user u
  310. ON (u.id=track.login_user_id)
  311. WHERE u.status != ".ANONYMOUS." AND login_date >= '$current_date' ";
  312. }
  313. if (api_get_multiple_access_url()) {
  314. $access_url_id = api_get_current_access_url_id();
  315. if ($access_url_id != -1) {
  316. if ($friends) {
  317. // friends from social network is online
  318. $query = "SELECT DISTINCT count(login_user_id) as count
  319. FROM $track_online_table track
  320. INNER JOIN $friend_user_table ON (friend_user_id = login_user_id)
  321. WHERE
  322. track.access_url_id = $access_url_id AND
  323. login_date >= '".$current_date."' AND
  324. friend_user_id <> '".api_get_user_id()."' AND
  325. relation_type='".USER_RELATION_TYPE_FRIEND."' ";
  326. } else {
  327. // all users online
  328. $query = "SELECT count(login_id) as count FROM $track_online_table track
  329. INNER JOIN $table_user u ON (u.id=track.login_user_id)
  330. WHERE
  331. u.status != ".ANONYMOUS." AND
  332. track.access_url_id = $access_url_id AND
  333. login_date >= '$current_date' ";
  334. }
  335. }
  336. }
  337. // Dev purposes show all users online
  338. /*$table_user = Database::get_main_table(TABLE_MAIN_USER);
  339. $query = "SELECT count(*) as count FROM ".$table_user;*/
  340. $result = Database::query($query);
  341. if (Database::num_rows($result) > 0) {
  342. $row = Database::fetch_array($result);
  343. return $row['count'];
  344. } else {
  345. return false;
  346. }
  347. }
  348. /**
  349. * Returns a list (array) of users who are online and in this course.
  350. * @param int User ID
  351. * @param int Number of minutes
  352. * @param string Course code (could be empty, but then the function returns false)
  353. * @return array Each line gives a user id and a login time
  354. */
  355. function who_is_online_in_this_course($from, $number_of_items, $uid, $time_limit, $course_code)
  356. {
  357. if (empty($course_code)) {
  358. return false;
  359. }
  360. if (empty($time_limit)) {
  361. $time_limit = api_get_setting('time_limit_whosonline');
  362. } else {
  363. $time_limit = intval($time_limit);
  364. }
  365. $online_time = time() - $time_limit * 60;
  366. $current_date = api_get_utc_datetime($online_time);
  367. $track_online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  368. $course_code = Database::escape_string($course_code);
  369. $courseInfo = api_get_course_info($course_code);
  370. $courseId = $courseInfo['real_id'];
  371. $from = intval($from);
  372. $number_of_items = intval($number_of_items);
  373. $query = "SELECT login_user_id, login_date FROM $track_online_table
  374. WHERE login_user_id <> 2 AND c_id = $courseId AND login_date >= '$current_date'
  375. LIMIT $from, $number_of_items ";
  376. $result = Database::query($query);
  377. if ($result) {
  378. $users_online = array();
  379. while (list($login_user_id, $login_date) = Database::fetch_row($result)) {
  380. $users_online[] = $login_user_id;
  381. }
  382. return $users_online;
  383. } else {
  384. return false;
  385. }
  386. }
  387. /**
  388. * @param integer $uid
  389. * @param string $time_limit
  390. */
  391. function who_is_online_in_this_course_count(
  392. $uid,
  393. $time_limit,
  394. $coursecode = null
  395. ) {
  396. if (empty($coursecode)) {
  397. return false;
  398. }
  399. $track_online_table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  400. $time_limit = Database::escape_string($time_limit);
  401. $online_time = time() - $time_limit * 60;
  402. $current_date = api_get_utc_datetime($online_time);
  403. $courseId = api_get_course_int_id($coursecode);
  404. if (empty($courseId)) {
  405. return false;
  406. }
  407. $query = "SELECT count(login_user_id) as count
  408. FROM $track_online_table
  409. WHERE
  410. login_user_id <> 2 AND
  411. c_id = $courseId AND
  412. login_date >= '$current_date' ";
  413. $result = Database::query($query);
  414. if (Database::num_rows($result) > 0) {
  415. $row = Database::fetch_array($result);
  416. return $row['count'];
  417. } else {
  418. return false;
  419. }
  420. }
  421. /**
  422. * @param string $timeLimit
  423. * @param int $sessionId
  424. * @return bool
  425. * @internal param int $uid
  426. */
  427. function whoIsOnlineInThisSessionCount($timeLimit, $sessionId)
  428. {
  429. if (!$sessionId) {
  430. return 0;
  431. }
  432. $tblTrackOnline = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
  433. $timeLimit = Database::escape_string($timeLimit);
  434. $online_time = time() - $timeLimit * 60;
  435. $current_date = api_get_utc_datetime($online_time);
  436. $query = "SELECT count(login_user_id) as count
  437. FROM $tblTrackOnline
  438. WHERE login_user_id <> 2 AND session_id = $sessionId AND login_date >= '$current_date' ";
  439. $result = Database::query($query);
  440. if (Database::num_rows($result) > 0) {
  441. $row = Database::fetch_assoc($result);
  442. return $row['count'];
  443. }
  444. return 0;
  445. }