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320 lines
12 KiB
320 lines
12 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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==============================================================================
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* Code library for showing Who is online
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*
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* @author Istvan Mandak, principal author
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* @author Denes Nagy, principal author
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* @author Bart Mollet
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* @author Roan Embrechts, cleaning and bugfixing
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* @package chamilo.whoisonline
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*/
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/**
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* Insert a login reference for the current user into the track_e_online stats table.
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* This table keeps trace of the last login. Nothing else matters (we don't keep traces of anything older)
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* @param int user id
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* @return void
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*/
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function LoginCheck($uid)
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{
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global $_course;
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$uid = (int) $uid;
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$online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
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if (!empty($uid))
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{
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$login_ip = '';
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if(!empty($_SERVER['REMOTE_ADDR']))
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{
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$login_ip = Database::escape_string($_SERVER['REMOTE_ADDR']);
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}
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$reallyNow = time();
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$login_date = date("Y-m-d H:i:s",$reallyNow);
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// if the $_course array exists this means we are in a course and we have to store this in the who's online table also
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// to have the x users in this course feature working
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if (is_array($_course) && count($_course)>0 && !empty($_course['id']))
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{
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$query = "REPLACE INTO ".$online_table ." (login_id,login_user_id,login_date,login_ip, course) VALUES ($uid,$uid,'$login_date','$login_ip', '".$_course['id']."')";
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}
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else
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{
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$query = "REPLACE INTO ".$online_table ." (login_id,login_user_id,login_date,login_ip) VALUES ($uid,$uid,'$login_date','$login_ip')";
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}
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@Database::query($query);
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}
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}
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/**
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* This function handles the logout and is called whenever there is a $_GET['logout']
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* @return void Directly redirects the user or leaves him where he is, but doesn't return anything
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* @author Fernando P. García <fernando@develcuy.com>
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*/
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function online_logout() {
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global $_configuration, $extAuthSource;
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// variable initialisation
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$query_string='';
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if (!empty($_SESSION['user_language_choice'])) {
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$query_string='?language='.$_SESSION['user_language_choice'];
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}
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// Database table definition
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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// selecting the last login of the user
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$uid = intval($_GET['uid']);
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$sql_last_connection="SELECT login_id, login_date FROM $tbl_track_login WHERE login_user_id='$uid' ORDER BY login_date DESC LIMIT 0,1";
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$q_last_connection=Database::query($sql_last_connection);
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if (Database::num_rows($q_last_connection)>0) {
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$i_id_last_connection=Database::result($q_last_connection,0,"login_id");
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}
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if (!isset($_SESSION['login_as'])) {
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$current_date=date('Y-m-d H:i:s',time());
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$s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date='".$current_date."' WHERE login_id='$i_id_last_connection'";
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Database::query($s_sql_update_logout_date);
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}
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LoginDelete($uid, $_configuration['statistics_database']); //from inc/lib/online.inc.php - removes the "online" status
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//the following code enables the use of an external logout function.
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//example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
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// then a function called ldap_logout() inside that file
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// (using *authent_name*_logout as the function name) and the following code
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// will find and execute it
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$uinfo = api_get_user_info($uid);
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if (($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource)) {
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if (is_array($extAuthSource[$uinfo['auth_source']])) {
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$subarray = $extAuthSource[$uinfo['auth_source']];
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if (!empty($subarray['logout']) && file_exists($subarray['logout'])) {
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require_once($subarray['logout']);
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$logout_function = $uinfo['auth_source'].'_logout';
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if (function_exists($logout_function)) {
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$logout_function($uinfo);
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}
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}
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}
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}
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require_once api_get_path(SYS_PATH) . 'main/chat/chat_functions.lib.php';
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exit_of_chat($uid);
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api_session_destroy();
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global $logout_no_redirect;
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if (!$logout_no_redirect) {
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header("Location: index.php$query_string");
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return;
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}
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}
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/**
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* Remove all login records from the track_e_online stats table, for the given user ID.
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* @param int User ID
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* @return void
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*/
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function LoginDelete($user_id)
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{
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$online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
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$user_id = (int) $user_id;
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$query = "DELETE FROM ".$online_table ." WHERE login_user_id = '".Database::escape_string($user_id)."'";
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@Database::query($query);
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}
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/**
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* Gives a list of people online now (and in the last $valid minutes)
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* @param int Number of minutes to account logins for
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* @param bool optionally if it's set to true shows who friends from social network is online otherwise just shows all users online
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* @return array For each line, a list of user IDs and login dates, or FALSE on error or empty results
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*/
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function WhoIsOnline($valid, $friends = false)
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{
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$valid = (int) $valid;
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$current_date = date('Y-m-d H:i:s',time());
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$track_online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
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$friend_user_table = Database::get_main_table(TABLE_MAIN_USER_REL_USER);
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$query = '';
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if ($friends) {
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// who friends from social network is online
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$query = " SELECT distinct login_user_id,login_date
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FROM $track_online_table
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INNER JOIN $friend_user_table ON (friend_user_id = login_user_id)
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WHERE DATE_ADD(login_date,INTERVAL $valid MINUTE) >= '".$current_date."' AND friend_user_id <> '".api_get_user_id()."' AND relation_type='".USER_RELATION_TYPE_FRIEND."' AND user_id = '".api_get_user_id()."' ";
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} else {
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// all users online
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$query = "SELECT login_user_id,login_date FROM ".$track_online_table ." WHERE DATE_ADD(login_date,INTERVAL $valid MINUTE) >= '".$current_date."' ";
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}
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global $_configuration;
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if ($_configuration['multiple_access_urls']==true) {
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$tbl_user_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
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$access_url_id = api_get_current_access_url_id();
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if ($access_url_id != -1) {
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if ($friends) {
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// who friends from social network is online
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$query = " SELECT distinct login_user_id,login_date
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FROM $track_online_table
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INNER JOIN $tbl_user_rel_access_url user_rel_url ON (user_rel_url.user_id = track.login_user_id)
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INNER JOIN $friend_user_table ON (friend_user_id = login_user_id)
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WHERE access_url_id = $access_url_id AND DATE_ADD(login_date,INTERVAL $valid MINUTE) >= '".$current_date."' AND friend_user_id <> '".api_get_user_id()."' AND relation_type='".USER_RELATION_TYPE_FRIEND."' AND user_id = '".api_get_user_id()."' ";
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} else {
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// all users online
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$query = " SELECT login_user_id,login_date FROM ".$track_online_table ." track
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INNER JOIN $tbl_user_rel_access_url user_rel_url
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ON (user_rel_url.user_id = track.login_user_id)
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WHERE access_url_id = $access_url_id AND DATE_ADD(login_date,INTERVAL $valid MINUTE) >= '".$current_date."' ";
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}
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}
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}
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$result = @Database::query($query);
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if (count($result)>0) {
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$rtime = time();
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$rdate = date("Y-m-d H:i:s",$rtime);
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$validtime = mktime(date("H"),date("i")-$valid,date("s"),date("m"),date("d"),date("Y"));
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$rarray = array();
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while(list($login_user_id,$login_date)= Database::fetch_row($result)) {
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$barray = array();
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array_push($barray,$login_user_id);
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array_push($barray,$login_date);
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// YYYY-MM-DD HH:MM:SS, db date format
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$hour = substr($login_date,11,2);
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$minute = substr($login_date,14,2);
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$secund = substr($login_date,17,2);
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$month = substr($login_date,5,2);
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$day = substr($login_date,8,2);
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$year = substr($login_date,0,4);
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// db timestamp
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$dbtime = mktime($hour,$minute,$secund,$month,$day,$year);
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if ($dbtime>$validtime) {
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array_push($rarray,$barray);
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}
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}
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return $rarray;
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} else {
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return false;
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}
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}
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/**
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* Gets the full user name for a given user ID
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* @param int User ID
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* @return string The full username, elements separated by an HTML space
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*/
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function GetFullUserName($uid)
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{
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$uid = (int) $uid;
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$uid = Database::escape_string($uid);
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$query = "SELECT firstname,lastname FROM ".$user_table." WHERE user_id='$uid'";
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$result = @Database::query($query);
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if (count($result)>0) {
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$str = '';
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while(list($firstname,$lastname)= Database::fetch_array($result)) {
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$str = str_replace(' ', ' ', api_get_person_name($firstname, $lastname));
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return $str;
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}
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}
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}
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/**
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* Gets a list of chat calls made by others to the current user (info kept in main.user table)
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* @param none - taken from global space
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* @return string An HTML-formatted message
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*/
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function chatcall() {
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global $_user, $_cid;
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if (!$_user['user_id']) {
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return (false);
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}
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$track_user_table = Database::get_main_table(TABLE_MAIN_USER);
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$sql="select chatcall_user_id, chatcall_date from $track_user_table where ( user_id = '".$_user['user_id']."' )";
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$result=Database::query($sql);
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$row=Database::fetch_array($result);
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$login_date=$row['chatcall_date'];
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$hour = substr($login_date,11,2);
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$minute = substr($login_date,14,2);
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$secund = substr($login_date,17,2);
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$month = substr($login_date,5,2);
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$day = substr($login_date,8,2);
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$year = substr($login_date,0,4);
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$calltime = mktime($hour,$minute,$secund,$month,$day,$year);
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$time = time();
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$time = date("Y-m-d H:i:s", $time);
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$minute_passed=5; //within this limit, the chat call request is valid
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$limittime = mktime(date("H"),date("i")-$minute_passed,date("s"),date("m"),date("d"),date("Y"));
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if (($row['chatcall_user_id']) and ($calltime>$limittime)) {
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$webpath=api_get_path(WEB_CODE_PATH);
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$message=get_lang('YouWereCalled').' : '.GetFullUserName($row['chatcall_user_id'],'').'<br>'.get_lang('DoYouAccept')
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."<p>"
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."<a href=\"".$webpath."chat/chat.php?cidReq=".$_cid."&origin=whoisonlinejoin\">"
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. get_lang("Yes")
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."</a>"
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." | "
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."<a href=\"".api_get_path('WEB_PATH')."webchatdeny.php\">"
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. get_lang("No")
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."</a>"
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."</p>";
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return($message);
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}
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else
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{
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return(false);
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}
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}
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/**
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* Returns a list (array) of users who are online and in this course.
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* @param int User ID
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* @param int Number of minutes
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* @param string Course code (could be empty, but then the function returns false)
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* @return array Each line gives a user id and a login time
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*/
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function who_is_online_in_this_course($uid, $valid, $coursecode=null)
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{
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if(empty($coursecode)) return false;
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$track_online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
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$coursecode = Database::escape_string($coursecode);
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$valid = Database::escape_string($valid);
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$query = "SELECT login_user_id,login_date FROM ".$track_online_table ." WHERE course='".$coursecode."' AND DATE_ADD(login_date,INTERVAL $valid MINUTE) >= NOW() ";
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$result = Database::query($query);
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if (count($result)>0) {
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$rtime = time();
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$rdate = date("Y-m-d H:i:s",$rtime);
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$validtime = mktime(date("H"),date("i")-$valid,date("s"),date("m"),date("d"),date("Y"));
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$rarray = array();
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while(list($login_user_id,$login_date)= Database::fetch_row($result)) {
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$barray = array();
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array_push($barray,$login_user_id);
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array_push($barray,$login_date);
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// YYYY-MM-DD HH:MM:SS, db date format
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$hour = substr($login_date,11,2);
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$minute = substr($login_date,14,2);
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$secund = substr($login_date,17,2);
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$month = substr($login_date,5,2);
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$day = substr($login_date,8,2);
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$year = substr($login_date,0,4);
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// db timestamp
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$dbtime = mktime($hour,$minute,$secund,$month,$day,$year);
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if ($dbtime >= $validtime)
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{
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array_push($rarray,$barray);
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}
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}
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return $rarray;
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} else {
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return false;
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}
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} |