/lenasys/trunk : contents of codeigniter/application/models/user.php at revision 68.2.1

: (revision 68.2.1)

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<?php
	Class User extends CI_Model {
		/*
		 *	Constructor
		 */
		function __construct() {
			parent::__construct();
			
			//Load required libraries and drivers
			$this->load->database();
			$this->load->library('session');
		}


		/*
		 *	This function returns the users password hint (or FALSE if user isn't logged in).
		 *  RESTRICTED-LEVEL: None
		 */ 
		public function getPasswordHint($user) {
			//Query-structure
			$this->db->select('passwdHint');
			$this->db->from('Users');
			$this->db->where('userName', $user);
			$this->db->limit(1);
			
			//Execute query
			$query = $this->db->get();
			$result = $query->result();
			
			//If a matching DB record is found.
			if($result) {
				foreach($result as $row) {
					$hint = $row->passwdHint;
					
					//Return hint
					return $hint;
				}
			}
			
			//No such user
			return FALSE;
		}


		/*
		 *	This function logs the user in (returns FALSE on fail).
		 *  RESTRICTED-LEVEL: None
		 */
		public function login($username, $password) {			
			//Generate a salted hash
			$hash = $this->getSaltedHash($password);
	
			//Query-structure
			$this->db->select('userName, name, passwd, userType, ssn'); // Tog bort firstLogin här.
			$this->db->from('Users');
			$this->db->where('userName', $username);
			$this->db->where('passwd', $hash);
			$this->db->limit(1);
			
			//Execute query
			$query = $this->db->get();
			$result = $query->result();
			
			//If a matching DB record is found.
			if($result) {
				//Prepare session data
				$userDetails = array();
				foreach($result as $row) {
					$userDetails = array(
						'username' => $row->userName,
						'name' => $row->name,
						'usertype' => $row->userType,
						'ssn' => $row->ssn,
					// 	'firstLogin' => $row->firstLogin
					);
				}
				
				//Set session data
				$this->session->set_userdata('authenticated', $userDetails);
				
				//Log attempt as valid
				$this->logLogin($username, 1);
				
				//Return success
				return TRUE;
			}

			//Log attempt as invalid
			$this->logLogin($username, 0);

			//Return fail
			return FALSE;
		}


		/*
		 *	This function logs the user out.
		 *  RESTRICTED-LEVEL: Self
		 */
		public function logout() {
			//Unset session data
			$this->session->unset_userdata('authenticated');
		}


		/*
		 *	This function changes the users password.
		 *  RESTRICTED-LEVEL: Self
		 */
		public function changePassword($pwdOld, $pwdNew, $pwdHint) {
			//Check that a user is logged in.
			if($this->isLoggedIn()) {
				$user = $this->getUserName();
				$oldHash = $this->getSaltedHash($pwdOld);
				$newHash = $this->getSaltedHash($pwdNew);
				
				//Validate input with database
				$this->db->select('userName');
				$this->db->from('Users');
				$this->db->where('userName', $user);
				$this->db->where('passwd', $oldHash);
				$this->db->limit(1);
				$query = $this->db->get();
				$result = $query->result();
				
				//If a matching DB record is found, update database.
				if($result) {
					$data = array(
						'passwd' => $newHash,
						'passwdHint' => $pwdHint
					);
					
					$this->db->where('userName', $user);
					$this->db->update('Users', $data);
					
					//Return Success!
					return TRUE;
				}
			}
			
			//Return error
			return FALSE;
		}


		/*
		 *	This function registers user into the database.
		 *  RESTRICTED-LEVEL: Teacher
		 */
		public function addUser($userName, $name, $ssn, $password, $userType, $pwdHint) {
			//Check that a user is logged in and has the right privileges (is teacher)
			if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
				//Generate a salted hash
				$hash = $this->getSaltedHash($password);
				
				//Query-structure (All values are escaped automatically by codeigninte, producing safer queries.)
				$this->db->set('userName', $userName);
				$this->db->set('name', $name);
				$this->db->set('ssn', $ssn);
				$this->db->set('passwd', $password);
				$this->db->set('userType', $userType);
				$this->db->set('passwdHint', $pwdHint);
				$result = $this->db->insert('Users');
				
				//Check for my-sql error
				if($result) {
					//Return success
					return TRUE;
				}
			}
			
			//Return error
			return FALSE;
		}


		/*
		 *	This function removes users from the database.
		 *  RESTRICTED-LEVEL: Teacher
		 */
		public function removeUser($userName) {
			//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
			if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
				//Query-structure
				$this->db->where('userName', $userName);
				$result = $this->db->delete('Users');
				
				//Check for my-sql error
				if($result) {
					//Return success
					return TRUE;
				}
			}
			
			//Return error
			return FALSE;
		}


		/*
		 *	This reset the password for the user.
		 *  RESTRICTED-LEVEL: Teacher
		 */
		public function resetUser($userName) {
			//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
			if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
				//Check user type
				$this->db->select('userName, userType, ssn, email');
				$this->db->from('Users');
				$this->db->where('userName', $username);
				$this->db->limit(1);
				$query = $this->db->get();
				$result = $query->result();
				
				//If a matching DB record is found.
				if($result) {
					//Prepare new hash depending on user-type
					$newPwdHash = '';
					
					if ($row->userType == 'Student') {
						$newPwdHash = $this->getSaltedHash($row->ssn);
					}
					else if ($row->userType == 'Teacher') {
						//$newPwdHash = $this->getSaltedHash($row->email);
						$newPwdHash = $this->getSaltedHash($row->email);
					}
					
					//Execute reset
					$data = array(
						'passwd' => $newPwdHash,
						'passwdHint' => 'default',
						'firstLogin' => 1
					);
					
					$this->db->where('userName', $userName);
					$this->db->update('Users', $data);
					
					//Return Success!
					return TRUE;
				}
			}
			
			//Return error
			return FALSE;
		}


		/*
		 *	This parser a user list from ladok.
		 *  RESTRICTED-LEVEL: Teacher
		 */
		public function parseLadok() {
			//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
			if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
			}
		}


		/*
		 *	Generates a salted password hash, encrypted with sha1.
		 *  RESTRICTED-LEVEL: System
		 */
		private function getSaltedHash($pwd) {
			//Salt = CodeIgniters encryption-key from config
			$salt = $this->config->item('encryption_key');
			
			//Generate SHA1 hash using salt
			$hash = sha1($salt.$pwd);
			
			return $hash;
		}


		/*
		 *	Log the login attempt.
		 *  RESTRICTED-LEVEL: System
		 */
		private function logLogin($userName, $valid) {
			$data = array(
				'userName' => $userName,
				'userAgent' => $this->session->userdata('user_agent'),
				'userIP' => $this->session->userdata('ip_address'),
				'browserID' => $this->session->userdata('session_id'),
				'success' => $valid
			);
			
			$this->db->insert('logUserLoginAttempts', $data);
		}


		/*
		 *	This function return TRUE if the user is logged in and FALSE otherwise.
		 *  RESTRICTED-LEVEL: System
		 */
		public function isLoggedIn() {
			if ($this->session->userdata('authenticated')) {
				return TRUE;
			}
			else{
				return FALSE;
			}
		}


		/*
		 *	This function returns the users type (or FALSE if user isn't logged in).
		 *  RESTRICTED-LEVEL: System
		 */
		public function getUserType() {
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				return $temp['usertype'];
			}
			
			return FALSE;
		}


		/*
		 *	This function returns a boolean containing information if it is the first login.
		 *  RESTRICTED-LEVEL: System
		 */
		public function isFirstLogin() {
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				if ($temp['firstLogin'] == 1) {
					return TRUE;
				}
			}
			
			return FALSE;
		}


		/*
		 *	This function returns the username (or FALSE if user isn't logged in).
		 *  RESTRICTED-LEVEL: System
		 */ 
		public function getUserName() {
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				return $temp['username'];
			}
			
			return FALSE;
		}
	}
	
?>

36.3.1 by Daniel Hermansson Added login functionality	1	<?php
	2	Class User extends CI_Model {
	3	/*
	4	* Constructor
	5	*/
	6	function __construct() {
	7	parent::__construct();
	8
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	9	//Load required libraries and drivers
36.3.1 by Daniel Hermansson Added login functionality	10	$this->load->database();
	11	$this->load->library('session');
	12	}
	13
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	14
	15	/*
	16	* This function returns the users password hint (or FALSE if user isn't logged in).
	17	* RESTRICTED-LEVEL: None
	18	*/
	19	public function getPasswordHint($user) {
	20	//Query-structure
	21	$this->db->select('passwdHint');
	22	$this->db->from('Users');
	23	$this->db->where('userName', $user);
	24	$this->db->limit(1);
	25
	26	//Execute query
	27	$query = $this->db->get();
	28	$result = $query->result();
	29
	30	//If a matching DB record is found.
	31	if($result) {
64.1.1 by b11johgu ExamplesController:	32	foreach($result as $row) {
	33	$hint = $row->passwdHint;
	34
	35	//Return hint
	36	return $hint;
	37	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	38	}
	39
	40	//No such user
	41	return FALSE;
	42	}
	43
	44
36.3.1 by Daniel Hermansson Added login functionality	45	/*
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	46	* This function logs the user in (returns FALSE on fail).
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	47	* RESTRICTED-LEVEL: None
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	48	*/
	49	public function login($username, $password) {
36.3.1 by Daniel Hermansson Added login functionality	50	//Generate a salted hash
	51	$hash = $this->getSaltedHash($password);
	52
	53	//Query-structure
64.1.1 by b11johgu ExamplesController:	54	$this->db->select('userName, name, passwd, userType, ssn'); // Tog bort firstLogin här.
36.3.1 by Daniel Hermansson Added login functionality	55	$this->db->from('Users');
	56	$this->db->where('userName', $username);
	57	$this->db->where('passwd', $hash);
	58	$this->db->limit(1);
	59
	60	//Execute query
	61	$query = $this->db->get();
	62	$result = $query->result();
	63
	64	//If a matching DB record is found.
	65	if($result) {
	66	//Prepare session data
	67	$userDetails = array();
	68	foreach($result as $row) {
	69	$userDetails = array(
	70	'username' => $row->userName,
	71	'name' => $row->name,
	72	'usertype' => $row->userType,
64.1.1 by b11johgu ExamplesController:	73	'ssn' => $row->ssn,
64.1.1 by b11johgu ExamplesController:	74	// 'firstLogin' => $row->firstLogin
36.3.1 by Daniel Hermansson Added login functionality	75	);
	76	}
	77
	78	//Set session data
	79	$this->session->set_userdata('authenticated', $userDetails);
	80
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	81	//Log attempt as valid
	82	$this->logLogin($username, 1);
	83
36.3.1 by Daniel Hermansson Added login functionality	84	//Return success
36.3.1 by Daniel Hermansson Added login functionality	85	return TRUE;
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	86	}
	87
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	88	//Log attempt as invalid
	89	$this->logLogin($username, 0);
	90
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	91	//Return fail
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	92	return FALSE;
36.3.1 by Daniel Hermansson Added login functionality	93	}
	94
	95
	96	/*
	97	* This function logs the user out.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	98	* RESTRICTED-LEVEL: Self
64.1.1 by b11johgu ExamplesController:	99	*/
64.1.1 by b11johgu ExamplesController:	100	public function logout() {
36.3.1 by Daniel Hermansson Added login functionality	101	//Unset session data
	102	$this->session->unset_userdata('authenticated');
	103	}
64.1.1 by b11johgu ExamplesController:	104
36.3.1 by Daniel Hermansson Added login functionality	105
36.3.1 by Daniel Hermansson Added login functionality	106	/*
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	107	* This function changes the users password.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	108	* RESTRICTED-LEVEL: Self
64.1.1 by b11johgu ExamplesController:	109	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	110	public function changePassword($pwdOld, $pwdNew, $pwdHint) {
	111	//Check that a user is logged in.
	112	if($this->isLoggedIn()) {
	113	$user = $this->getUserName();
	114	$oldHash = $this->getSaltedHash($pwdOld);
	115	$newHash = $this->getSaltedHash($pwdNew);
	116
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	117	//Validate input with database
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	118	$this->db->select('userName');
	119	$this->db->from('Users');
	120	$this->db->where('userName', $user);
	121	$this->db->where('passwd', $oldHash);
	122	$this->db->limit(1);
	123	$query = $this->db->get();
	124	$result = $query->result();
	125
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	126	//If a matching DB record is found, update database.
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	127	if($result) {
	128	$data = array(
	129	'passwd' => $newHash,
	130	'passwdHint' => $pwdHint
	131	);
	132
	133	$this->db->where('userName', $user);
	134	$this->db->update('Users', $data);
	135
	136	//Return Success!
64.1.1 by b11johgu ExamplesController:	137	return TRUE;
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	138	}
	139	}
	140
	141	//Return error
	142	return FALSE;
	143	}
	144
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	145
	146	/*
	147	* This function registers user into the database.
	148	* RESTRICTED-LEVEL: Teacher
	149	*/
	150	public function addUser($userName, $name, $ssn, $password, $userType, $pwdHint) {
	151	//Check that a user is logged in and has the right privileges (is teacher)
	152	if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
	153	//Generate a salted hash
	154	$hash = $this->getSaltedHash($password);
	155
	156	//Query-structure (All values are escaped automatically by codeigninte, producing safer queries.)
	157	$this->db->set('userName', $userName);
	158	$this->db->set('name', $name);
	159	$this->db->set('ssn', $ssn);
	160	$this->db->set('passwd', $password);
	161	$this->db->set('userType', $userType);
	162	$this->db->set('passwdHint', $pwdHint);
	163	$result = $this->db->insert('Users');
	164
	165	//Check for my-sql error
	166	if($result) {
	167	//Return success
	168	return TRUE;
64.1.1 by b11johgu ExamplesController:	169	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	170	}
	171
	172	//Return error
	173	return FALSE;
	174	}
64.1.1 by b11johgu ExamplesController:	175
64.1.1 by b11johgu ExamplesController:	176
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	177	/*
	178	* This function removes users from the database.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	179	* RESTRICTED-LEVEL: Teacher
64.1.1 by b11johgu ExamplesController:	180	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	181	public function removeUser($userName) {
	182	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	183	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	184	//Query-structure
	185	$this->db->where('userName', $userName);
64.1.1 by b11johgu ExamplesController:	186	$result = $this->db->delete('Users');
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	187
	188	//Check for my-sql error
	189	if($result) {
	190	//Return success
	191	return TRUE;
64.1.1 by b11johgu ExamplesController:	192	}
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	193	}
	194
	195	//Return error
	196	return FALSE;
	197	}
64.1.1 by b11johgu ExamplesController:	198
64.1.1 by b11johgu ExamplesController:	199
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	200	/*
	201	* This reset the password for the user.
	202	* RESTRICTED-LEVEL: Teacher
	203	*/
	204	public function resetUser($userName) {
	205	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	206	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	207	//Check user type
	208	$this->db->select('userName, userType, ssn, email');
	209	$this->db->from('Users');
	210	$this->db->where('userName', $username);
	211	$this->db->limit(1);
	212	$query = $this->db->get();
	213	$result = $query->result();
	214
	215	//If a matching DB record is found.
	216	if($result) {
	217	//Prepare new hash depending on user-type
	218	$newPwdHash = '';
	219
	220	if ($row->userType == 'Student') {
	221	$newPwdHash = $this->getSaltedHash($row->ssn);
	222	}
	223	else if ($row->userType == 'Teacher') {
	224	//$newPwdHash = $this->getSaltedHash($row->email);
	225	$newPwdHash = $this->getSaltedHash($row->email);
	226	}
	227
	228	//Execute reset
	229	$data = array(
	230	'passwd' => $newPwdHash,
64.1.1 by b11johgu ExamplesController:	231	'passwdHint' => 'default',
64.1.1 by b11johgu ExamplesController:	232	'firstLogin' => 1
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	233	);
	234
	235	$this->db->where('userName', $userName);
	236	$this->db->update('Users', $data);
	237
	238	//Return Success!
	239	return TRUE;
	240	}
	241	}
	242
	243	//Return error
	244	return FALSE;
	245	}
64.1.1 by b11johgu ExamplesController:	246
64.1.1 by b11johgu ExamplesController:	247
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	248	/*
64.1.1 by b11johgu ExamplesController:	249	* This parser a user list from ladok.
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	250	* RESTRICTED-LEVEL: Teacher
	251	*/
64.1.1 by b11johgu ExamplesController:	252	public function parseLadok() {
	253	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	254	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	255	}
	256	}
64.1.1 by b11johgu ExamplesController:	257
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	258
	259	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	260	* Generates a salted password hash, encrypted with sha1.
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	261	* RESTRICTED-LEVEL: System
	262	*/
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	263	private function getSaltedHash($pwd) {
	264	//Salt = CodeIgniters encryption-key from config
	265	$salt = $this->config->item('encryption_key');
36.3.1 by Daniel Hermansson Added login functionality	266
	267	//Generate SHA1 hash using salt
	268	$hash = sha1($salt.$pwd);
	269
	270	return $hash;
	271	}
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	272
	273
	274	/*
	275	* Log the login attempt.
	276	* RESTRICTED-LEVEL: System
	277	*/
	278	private function logLogin($userName, $valid) {
	279	$data = array(
	280	'userName' => $userName,
	281	'userAgent' => $this->session->userdata('user_agent'),
	282	'userIP' => $this->session->userdata('ip_address'),
64.1.1 by b11johgu ExamplesController:	283	'browserID' => $this->session->userdata('session_id'),
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	284	'success' => $valid
	285	);
	286
	287	$this->db->insert('logUserLoginAttempts', $data);
	288	}
64.1.1 by b11johgu ExamplesController:	289
64.1.1 by b11johgu ExamplesController:	290
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	291	/*
	292	* This function return TRUE if the user is logged in and FALSE otherwise.
	293	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	294	*/
64.1.1 by b11johgu ExamplesController:	295	public function isLoggedIn() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	296	if ($this->session->userdata('authenticated')) {
	297	return TRUE;
	298	}
64.1.1 by b11johgu ExamplesController:	299	else{
	300	return FALSE;
	301	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	302	}
64.1.1 by b11johgu ExamplesController:	303
64.1.1 by b11johgu ExamplesController:	304
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	305	/*
	306	* This function returns the users type (or FALSE if user isn't logged in).
	307	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	308	*/
64.1.1 by b11johgu ExamplesController:	309	public function getUserType() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	310	if($this->isLoggedIn()) {
	311	$temp = $this->session->userdata('authenticated');
	312	return $temp['usertype'];
	313	}
	314
	315	return FALSE;
	316	}
64.1.1 by b11johgu ExamplesController:	317
64.1.1 by b11johgu ExamplesController:	318
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	319	/*
62.1.4 by Daniel Hermansson Added method for checking if its the first time a user logs on or not (to know when to require them to change password)	320	* This function returns a boolean containing information if it is the first login.
	321	* RESTRICTED-LEVEL: System
	322	*/
	323	public function isFirstLogin() {
	324	if($this->isLoggedIn()) {
	325	$temp = $this->session->userdata('authenticated');
	326	if ($temp['firstLogin'] == 1) {
	327	return TRUE;
	328	}
	329	}
	330
	331	return FALSE;
	332	}
64.1.1 by b11johgu ExamplesController:	333
64.1.1 by b11johgu ExamplesController:	334
62.1.4 by Daniel Hermansson Added method for checking if its the first time a user logs on or not (to know when to require them to change password)	335	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	336	* This function returns the username (or FALSE if user isn't logged in).
	337	* RESTRICTED-LEVEL: System
	338	*/
64.1.1 by b11johgu ExamplesController:	339	public function getUserName() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	340	if($this->isLoggedIn()) {
	341	$temp = $this->session->userdata('authenticated');
	342	return $temp['username'];
	343	}
	344
	345	return FALSE;
	346	}
36.3.1 by Daniel Hermansson Added login functionality	347	}
64.1.1 by b11johgu ExamplesController:	348
36.3.1 by Daniel Hermansson Added login functionality	349	?>