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EntelAuth.php
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EntelAuth.php
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<?php
session_start();
require_once ("EntelDB.php");
class EntelAuth extends EntelDB {
//one minute
private $loginDuration = "1 minute";
public $loginQuery = "SELECT userId,username,password FROM login WHERE username=? AND password=?";
//the page to redirect once the login has failed
private $failLoginRedir;
//the page to redirect once the login has succeeded.
private $loginpassRedir;
static $conn;
//constructor takes two parameters, Login fail Page url[$failRedir] and Login pass url[$loginpassRedir]
public function __construct($failRedir, $loginpassRedir) {
//instantiate a database.
$db = new EntelDB("test", "root", "");
$this -> conn = $db -> conn;
$this -> failLoginRedir = $failRedir;
$this -> loginpassRedir = $loginpassRedir;
}
//function to login the user.
function login($username, $password, $ajax = TRUE) {
$_SESSION['user_allow'] = FALSE;
$_SESSION['user'] = '';
$_SESSION['userId'] = '';
$_SESSION['loggedInTime'] = '';
$_SESSION['SessionExpires'] = '';
$query = $this -> loginQuery;
$stmt = $this -> conn -> prepare($query);
$Qdata = array($username, $password);
$stmt -> execute($Qdata);
$feedback = '';
if ($stmt -> rowCount() == 0 or $stmt -> rowCount() == null) {
$_SESSION['user_allow'] = FALSE;
if ($ajax) {
$feedback = array("login" => "fail", "message" => "Login Failed, Enter correct Username/Password");
echo json_encode($feedback);
} else {
header("Location:" . $this -> failLoginRedir);
}
} else {
$userDB = '';
$userID = '';
while ($rows = $stmt -> fetch()) {
$userDB = $rows['username'];
$userID = $rows['userId'];
}
//set sessions
$_SESSION['user_allow'] = TRUE;
$_SESSION['user'] = $userDB;
$_SESSION['userId'] = $userID;
$_SESSION['loggedInTime'] = time();
$_SESSION['SessionExpires'] = $this -> setSessionExpiry();
if ($ajax) {
$feedback = array("login" => "success", "message" => "Login successful");
echo json_encode($feedback);
} else {
header("Location:" . $this -> loginpassRedir);
}
}
// $this->logout("EntelUI.php");
}
function logout() {
if (isset($_SESSION['user_allow']) and isset($_SESSION['user']) and isset($_SESSION['userId'])) {
session_unset();
session_destroy();
header("Location:" . $this -> failLoginRedir);
} else {
header("Location:" . $this -> failLoginRedir);
}
}
function checkSession() {
if (!isset($_SESSION['user_allow']) and !isset($_SESSION['user']) and !isset($_SESSION['userId'])) {
//CHECK IF ITS THE LOGIN PAGE
$fURI = $_SERVER['REQUEST_URI'];
$sNAME = $_SERVER['SERVER_NAME'];
$URL = $sNAME . $fURI;
$exp = explode("/", $URL);
$currentPage = "" . end($exp);
if ($this -> failLoginRedir != $currentPage) {
header("location:" . $this -> failLoginRedir . "?redir=" . $_SERVER['SERVER_NAME'] . "/" . $redirectUrl);
}
} else {
$fURI = $_SERVER['REQUEST_URI'];
$sNAME = $_SERVER['SERVER_NAME'];
$URL = $sNAME . $fURI;
$exp = explode("/", $URL);
$currentPage = "" . end($exp);
$passloginpage = $this -> loginpassRedir;
if ($currentPage != $passloginpage) {
header("Location:" . $this -> loginpassRedir);
}
}
}
//check if the user session has expired
function checkSessionExpiry() {
$expirytime = $_SESSION['SessionExpires'];
if (time()>=$expirytime) {
$this -> logout();
}
}
//set the time the session of the user expires.
function setSessionExpiry() {
$duration = 1 * 60;
$expires = time() + $duration;
return $expires;
}
//always update the time session will expire upon user activity
function updateSessionExpiry() {
$expirytime = $this -> setSessionExpiry();
$_SESSION['SessionExpiry'] = $expirytime;
return true;
}
//check how long the user has been logged in.
function checkLoginDuration() {
$loggedInTime = $_SESSION['loggedInTime'];
$time = time();
$loginduration = $this -> getLoginDuration($loggedInTime, $time);
return $loginduration;
}
function getLoginDuration($time1, $time2, $precision = 6) {
//check how long the user has been logged in.
$loggedIn = $_SESSION['loggedInTime'];
$time = time();
if (!is_int($time1)) {
$time1 = strtotime($time1);
}
if (!is_int($time2)) {
$time2 = strtotime($time2);
}
// If time1 is bigger than time2
// Then swap time1 and time2
if ($time1 > $time2) {
$ttime = $time1;
$time1 = $time2;
$time2 = $ttime;
}
// Set up intervals and diffs arrays
$intervals = array('year', 'month', 'day', 'hour', 'minute', 'second');
$diffs = array();
// Loop thru all intervals
foreach ($intervals as $interval) {
// Create temp time from time1 and interval
$ttime = strtotime('+1 ' . $interval, $time1);
// Set initial values
$add = 1;
$looped = 0;
// Loop until temp time is smaller than time2
while ($time2 >= $ttime) {
// Create new temp time from time1 and interval
$add++;
$ttime = strtotime("+" . $add . " " . $interval, $time1);
$looped++;
}
$time1 = strtotime("+" . $looped . " " . $interval, $time1);
$diffs[$interval] = $looped;
}
$count = 0;
$times = array();
// Loop thru all diffs
foreach ($diffs as $interval => $value) {
// Break if we have needed precission
if ($count >= $precision) {
break;
}
// Add value and interval
// if value is bigger than 0
if ($value > 0) {
// Add s if value is not 1
if ($value != 1) {
$interval .= "s";
}
// Add value and interval to times array
$times[] = $value . " " . $interval;
$count++;
}
}
// Return string with times
return implode(", ", $times);
}
function displayUserNavbar()
{
}
}
?>