File Source for online.inc.php

<?php
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2005 Dokeos S.A.
Copyright (c) Istvan Mandak
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See the GNU General Public License for more details.
Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
==============================================================================
* Code library for showing Who is online
*
* @author Istvan Mandak, principal author
* @author Denes Nagy, principal author
* @author Bart Mollet
* @author Roan Embrechts, cleaning and bugfixing
* @package dokeos.whoisonline
==============================================================================
*/
/**
* Enter description here...
*
* @param unknown_type $uid
* @param unknown_type $statistics_database
*
* @todo the second parameter is of no use.
*/
function LoginCheck($uid,$statistics_database)
{
global $_course;
$online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
if ($uid!="")
{
LoginDelete($uid,$statistics_database);
$login_ip = $_SERVER['REMOTE_ADDR'];
$reallyNow = time();
$login_date = date("Y-m-d H:i:s",$reallyNow);
// if the $_course array exists this means we are in a course and we have to store this in the who's online table also
// to have the x users in this course feature working
if ($_course)
{
$query = "INSERT INTO ".$online_table ." (login_id,login_user_id,login_date,login_ip, course) VALUES ($uid,$uid,'$login_date','$login_ip', '".$_course['id']."')";
}
else
{
$query = "INSERT INTO ".$online_table ." (login_id,login_user_id,login_date,login_ip) VALUES ($uid,$uid,'$login_date','$login_ip')";
}
@api_sql_query($query,__FILE__,__LINE__);
}
}
/**
* Enter description here...
*
* @param unknown_type $uid
*
* @todo the name is not very clear. I would expect that it deletes a login from the tracking info or even it deletes a user.
*/
function LoginDelete($user_id)
{
$online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
$query = "DELETE FROM ".$online_table ." WHERE login_user_id = '".mysql_real_escape_string($user_id)."'";
@api_sql_query($query,__FILE__,__LINE__);
}
/**
* @todo remove parameter $statistics_database which is no longer necessary
*/
function WhoIsOnline($uid,$statistics_database,$valid)
{
$track_online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
$query = "SELECT login_user_id,login_date FROM ".$track_online_table ." WHERE DATE_ADD(login_date,INTERVAL $valid MINUTE) >= NOW() ";
$result = @api_sql_query($query,__FILE__,__LINE__);
if (count($result)>0)
{
$rtime = time();
$rdate = date("Y-m-d H:i:s",$rtime);
$validtime = mktime(date("H"),date("i")-$valid,date("s"),date("m"),date("d"),date("Y"));
$rarray = array();
while(list($login_user_id,$login_date)= mysql_fetch_row($result))
{
$barray = array();
array_push($barray,$login_user_id);
array_push($barray,$login_date);
// YYYY-MM-DD HH:MM:SS, db date format
$hour = substr($login_date,11,2);
$minute = substr($login_date,14,2);
$secund = substr($login_date,17,2);
$month = substr($login_date,5,2);
$day = substr($login_date,8,2);
$year = substr($login_date,0,4);
// db timestamp
$dbtime = mktime($hour,$minute,$secund,$month,$day,$year);
if ($dbtime>$validtime)
{
array_push($rarray,$barray);
}
//echo $dbtime.":".$rtime.">".$validtime." ";
//echo "$login_user_id.":".$login_date.";";
}
return $rarray;
}
else
{
return false;
}
}
function GetFullUserName($uid)
{
$user_table = Database::get_main_table(TABLE_MAIN_USER);
$safe_uid = Database::escape_string($uid);
$query = "SELECT firstname,lastname FROM ".$user_table." WHERE user_id='$safe_uid'";
$result = @api_sql_query($query,__FILE__,__LINE__);
if (count($result)>0)
{
$str = "";
while(list($firstname,$lastname)= mysql_fetch_array($result))
{
$str = $lastname." ".$firstname;
return $str;
}
}
}
function GetURL($path)
{
$str = "";
$url = explode('/',$path);
for($i=0;$i < sizeof($url)-2; $i++)
{
if($i==sizeof($url)-3)
{$str = $str.$url[$i]; }
else
{
$str = $str.$url[$i]."/";
}
}
return $str;
}
// picture?
function IsValidUser($uid)
{
$user_table = Database::get_main_table(TABLE_MAIN_USER);
$query = "SELECT `picture_uri` FROM ".$user_table." WHERE `user_id`='$uid'";
$result = @api_sql_query($query,__FILE__,__LINE__);
if (count($result)>0)
{
while(list($picture_uri)= mysql_fetch_array($result))
{
if (count($picture_uri)>0)
{
return true;
}
else
{
return false;
}
}
}
else
{
return false;
}
}
function ClearURL($path)
{
$url = explode('?id=',$path);
return $url[0];
}
function chatcall() {
global $_user, $_cid;
if (!$_user['user_id'])
{
return (false);
}
$track_user_table = Database::get_main_table(TABLE_MAIN_USER);
$sql="select chatcall_user_id, chatcall_date from $track_user_table where ( user_id = '".$_user['user_id']."' )";
$result=api_sql_query($sql,__FILE__,__LINE__);
$row=mysql_fetch_array($result);
$login_date=$row['chatcall_date'];
$hour = substr($login_date,11,2);
$minute = substr($login_date,14,2);
$secund = substr($login_date,17,2);
$month = substr($login_date,5,2);
$day = substr($login_date,8,2);
$year = substr($login_date,0,4);
$calltime = mktime($hour,$minute,$secund,$month,$day,$year);
$time = time();
$time = date("Y-m-d H:i:s", $time);
$minute_passed=5; //within this limit, the chat call request is valid
$limittime = mktime(date("H"),date("i")-$minute_passed,date("s"),date("m"),date("d"),date("Y"));
if (($row['chatcall_user_id']) and ($calltime>$limittime)) {
$webpath=api_get_path(WEB_CODE_PATH);
$message=get_lang('YouWereCalled').' : '.GetFullUserName($row['chatcall_user_id'],'').' '.get_lang('DoYouAccept')
.""
."<a href=\"".$webpath."chat/chat.php?cidReq=".$_cid."&origin=whoisonlinejoin\">"
. get_lang("Yes")
."</a>"
."  |  "
."<a href=\"".api_get_path('WEB_PATH')."webchatdeny.php\">"
. get_lang("No")
."</a>"
."";
return($message);
}
else
{
return(false);
}
}
/**
* Returns a list (array) of users who are online and in this course.
*/
function who_is_online_in_this_course($uid, $valid, $coursecode)
{
$track_online_table = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
$coursecode = Database::escape_string($coursecode);
$query = "SELECT login_user_id,login_date FROM ".$track_online_table ." WHERE course='".$coursecode."' AND DATE_ADD(login_date,INTERVAL $valid MINUTE) >= NOW() ";
$result = api_sql_query($query,__FILE__,__LINE__);
if (count($result)>0)
{
$rtime = time();
$rdate = date("Y-m-d H:i:s",$rtime);
$validtime = mktime(date("H"),date("i")-$valid,date("s"),date("m"),date("d"),date("Y"));
$rarray = array();
while(list($login_user_id,$login_date)= mysql_fetch_row($result))
{
$barray = array();
array_push($barray,$login_user_id);
array_push($barray,$login_date);
// YYYY-MM-DD HH:MM:SS, db date format
$hour = substr($login_date,11,2);
$minute = substr($login_date,14,2);
$secund = substr($login_date,17,2);
$month = substr($login_date,5,2);
$day = substr($login_date,8,2);
$year = substr($login_date,0,4);
// db timestamp
$dbtime = mktime($hour,$minute,$secund,$month,$day,$year);
if ($dbtime >= $validtime)
{
array_push($rarray,$barray);
}
//echo $dbtime.":".$rtime.">".$validtime." ";
//echo "$login_user_id.":".$login_date.";";
}
return $rarray;
}
else
{
return false;
}
}
?>

Source for file online.inc.php