/lenasys/trunk : contents of codeigniter/application/models/user.php at revision 83.1.4

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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, $email) {
			//Check that a user is logged in and has the right privileges (is teacher)
			if($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', $hash);
				$this->db->set('userType', $userType);
				$this->db->set('passwdHint', $pwdHint);
				$this->db->set('email', $email);
				$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 parses a user list from ladok and returns an array with users.
		 *  RESTRICTED-LEVEL: Teacher
		 */
		public function parseLadok($string) {
			//Check that a user is logged in and has the right privileges (is teacher).
			if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
				$userArray = array();
				
				//Populate array with users from ladok
				$ladokUsers = preg_split( '/\r\n|\r|\n/', $string);
				
				//Trim lines
				foreach ($ladokUsers as $key => $value) {
					$ladokUsers[$key] = trim($ladokUsers[$key]);
				}
				
				//Split after last name
				foreach ($ladokUsers as $key => $value) {
					$ladokUsers[$key] = explode(',', trim($ladokUsers[$key]));
				}
				
				//Replace whitespaces and tabs with divider.
				foreach ($ladokUsers as $key => $value) {
					foreach ($ladokUsers[$key] as $key2 => $value2) {
						$ladokUsers[$key][$key2] = preg_replace('/\s+/', ' ', trim($ladokUsers[$key][$key2]));
					}
				}
				
				//Generate user array
				foreach ($ladokUsers as $key => $value) {
					$temp = array(
						'ssn' => substr($ladokUsers[$key][0], 0, 11),
						'lastname' => substr($ladokUsers[$key][0], 12, strlen($ladokUsers[$key][0])),
						'firstname' => substr($ladokUsers[$key][1], 0, stripos($ladokUsers[$key][1], ' ')),
						'email' => substr($ladokUsers[$key][1], (strrpos($ladokUsers[$key][1], ' ') + 1))
					);
					$temp['username'] = substr($temp['email'], 0, (stripos($temp['email'], '@')));
					array_push($userArray, $temp);
				}
				
				//Return parsed user array
				return $userArray;
			}
			
			//If not authed
			return FALSE;
		}


		/*
		 *	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', $data);
	135
	136	//Return Success!
64.1.1 by b11johgu ExamplesController:	137	return TRUE;
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	138	}
	139	}
	140
	141	//Return error
	142	return FALSE;
	143	}
	144
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	145
	146	/*
	147	* This function registers user into the database.
	148	* RESTRICTED-LEVEL: Teacher
	149	*/
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	150	public function addUser($userName, $name, $ssn, $password, $userType, $pwdHint, $email) {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	151	//Check that a user is logged in and has the right privileges (is teacher)
	152	if($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);
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	160	$this->db->set('passwd', $hash);
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	161	$this->db->set('userType', $userType);
	162	$this->db->set('passwdHint', $pwdHint);
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	163	$this->db->set('email', $email);
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	164	$result = $this->db->insert('Users');
	165
	166	//Check for my-sql error
	167	if($result) {
	168	//Return success
	169	return TRUE;
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	170	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	171	}
	172
	173	//Return error
	174	return FALSE;
	175	}
64.1.1 by b11johgu ExamplesController:	176
64.1.1 by b11johgu ExamplesController:	177
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	178	/*
	179	* This function removes users from the database.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	180	* RESTRICTED-LEVEL: Teacher
64.1.1 by b11johgu ExamplesController:	181	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	182	public function removeUser($userName) {
	183	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	184	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	185	//Query-structure
	186	$this->db->where('userName', $userName);
64.1.1 by b11johgu ExamplesController:	187	$result = $this->db->delete('Users');
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	188
	189	//Check for my-sql error
	190	if($result) {
	191	//Return success
	192	return TRUE;
64.1.1 by b11johgu ExamplesController:	193	}
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	194	}
	195
	196	//Return error
	197	return FALSE;
	198	}
64.1.1 by b11johgu ExamplesController:	199
64.1.1 by b11johgu ExamplesController:	200
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	201	/*
	202	* This reset the password for the user.
	203	* RESTRICTED-LEVEL: Teacher
	204	*/
	205	public function resetUser($userName) {
	206	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	207	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	208	//Check user type
	209	$this->db->select('userName, userType, ssn, email');
	210	$this->db->from('Users');
	211	$this->db->where('userName', $username);
	212	$this->db->limit(1);
	213	$query = $this->db->get();
	214	$result = $query->result();
	215
	216	//If a matching DB record is found.
	217	if($result) {
	218	//Prepare new hash depending on user-type
	219	$newPwdHash = '';
	220
	221	if ($row->userType == 'Student') {
	222	$newPwdHash = $this->getSaltedHash($row->ssn);
	223	}
	224	else if ($row->userType == 'Teacher') {
	225	//$newPwdHash = $this->getSaltedHash($row->email);
	226	$newPwdHash = $this->getSaltedHash($row->email);
	227	}
	228
	229	//Execute reset
	230	$data = array(
	231	'passwd' => $newPwdHash,
64.1.1 by b11johgu ExamplesController:	232	'passwdHint' => 'default',
64.1.1 by b11johgu ExamplesController:	233	'firstLogin' => 1
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	234	);
	235
	236	$this->db->where('userName', $userName);
	237	$this->db->update('Users', $data);
	238
	239	//Return Success!
	240	return TRUE;
	241	}
	242	}
	243
	244	//Return error
	245	return FALSE;
	246	}
64.1.1 by b11johgu ExamplesController:	247
64.1.1 by b11johgu ExamplesController:	248
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	249	/*
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	250	* This parses a user list from ladok and returns an array with users.
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	251	* RESTRICTED-LEVEL: Teacher
	252	*/
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	253	public function parseLadok($string) {
	254	//Check that a user is logged in and has the right privileges (is teacher).
	255	if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
	256	$userArray = array();
	257
	258	//Populate array with users from ladok
	259	$ladokUsers = preg_split( '/\r\n\|\r\|\n/', $string);
	260
	261	//Trim lines
	262	foreach ($ladokUsers as $key => $value) {
	263	$ladokUsers[$key] = trim($ladokUsers[$key]);
	264	}
	265
	266	//Split after last name
	267	foreach ($ladokUsers as $key => $value) {
	268	$ladokUsers[$key] = explode(',', trim($ladokUsers[$key]));
	269	}
	270
	271	//Replace whitespaces and tabs with divider.
	272	foreach ($ladokUsers as $key => $value) {
	273	foreach ($ladokUsers[$key] as $key2 => $value2) {
	274	$ladokUsers[$key][$key2] = preg_replace('/\s+/', ' ', trim($ladokUsers[$key][$key2]));
	275	}
	276	}
	277
	278	//Generate user array
	279	foreach ($ladokUsers as $key => $value) {
	280	$temp = array(
	281	'ssn' => substr($ladokUsers[$key][0], 0, 11),
	282	'lastname' => substr($ladokUsers[$key][0], 12, strlen($ladokUsers[$key][0])),
	283	'firstname' => substr($ladokUsers[$key][1], 0, stripos($ladokUsers[$key][1], ' ')),
	284	'email' => substr($ladokUsers[$key][1], (strrpos($ladokUsers[$key][1], ' ') + 1))
	285	);
69.1.2 by Daniel Hermansson Modified ladok parser, functionality for getting username was missing	286	$temp['username'] = substr($temp['email'], 0, (stripos($temp['email'], '@')));
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	287	array_push($userArray, $temp);
	288	}
	289
	290	//Return parsed user array
	291	return $userArray;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	292	}
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	293
	294	//If not authed
	295	return FALSE;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	296	}
64.1.1 by b11johgu ExamplesController:	297
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	298
	299	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	300	* Generates a salted password hash, encrypted with sha1.
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	301	* RESTRICTED-LEVEL: System
	302	*/
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	303	private function getSaltedHash($pwd) {
	304	//Salt = CodeIgniters encryption-key from config
	305	$salt = $this->config->item('encryption_key');
36.3.1 by Daniel Hermansson Added login functionality	306
	307	//Generate SHA1 hash using salt
	308	$hash = sha1($salt.$pwd);
	309
	310	return $hash;
	311	}
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	312
	313
	314	/*
	315	* Log the login attempt.
	316	* RESTRICTED-LEVEL: System
	317	*/
	318	private function logLogin($userName, $valid) {
	319	$data = array(
	320	'userName' => $userName,
	321	'userAgent' => $this->session->userdata('user_agent'),
	322	'userIP' => $this->session->userdata('ip_address'),
64.1.1 by b11johgu ExamplesController:	323	'browserID' => $this->session->userdata('session_id'),
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	324	'success' => $valid
	325	);
	326
	327	$this->db->insert('logUserLoginAttempts', $data);
	328	}
64.1.1 by b11johgu ExamplesController:	329
64.1.1 by b11johgu ExamplesController:	330
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	331	/*
	332	* This function return TRUE if the user is logged in and FALSE otherwise.
	333	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	334	*/
64.1.1 by b11johgu ExamplesController:	335	public function isLoggedIn() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	336	if ($this->session->userdata('authenticated')) {
	337	return TRUE;
	338	}
64.1.1 by b11johgu ExamplesController:	339	else{
	340	return FALSE;
	341	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	342	}
64.1.1 by b11johgu ExamplesController:	343
64.1.1 by b11johgu ExamplesController:	344
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	345	/*
	346	* This function returns the users type (or FALSE if user isn't logged in).
	347	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	348	*/
64.1.1 by b11johgu ExamplesController:	349	public function getUserType() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	350	if($this->isLoggedIn()) {
	351	$temp = $this->session->userdata('authenticated');
	352	return $temp['usertype'];
	353	}
	354
	355	return FALSE;
	356	}
64.1.1 by b11johgu ExamplesController:	357
64.1.1 by b11johgu ExamplesController:	358
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	359	/*
62.1.4 by Daniel Hermansson Added method for checking if its the first time a user logs on or not (to know when to require them to change password)	360	* This function returns a boolean containing information if it is the first login.
	361	* RESTRICTED-LEVEL: System
	362	*/
	363	public function isFirstLogin() {
	364	if($this->isLoggedIn()) {
	365	$temp = $this->session->userdata('authenticated');
	366	if ($temp['firstLogin'] == 1) {
	367	return TRUE;
	368	}
	369	}
	370
	371	return FALSE;
	372	}
64.1.1 by b11johgu ExamplesController:	373
64.1.1 by b11johgu ExamplesController:	374
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)	375	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	376	* This function returns the username (or FALSE if user isn't logged in).
	377	* RESTRICTED-LEVEL: System
	378	*/
64.1.1 by b11johgu ExamplesController:	379	public function getUserName() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	380	if($this->isLoggedIn()) {
	381	$temp = $this->session->userdata('authenticated');
	382	return $temp['username'];
	383	}
	384
	385	return FALSE;
	386	}
36.3.1 by Daniel Hermansson Added login functionality	387	}
64.1.1 by b11johgu ExamplesController:	388
36.3.1 by Daniel Hermansson Added login functionality	389	?>