/lenasys/trunk : contents of codeigniter/application/models/user.php at revision 128

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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, activeCourse'); // 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,
						'activeCourse' => $row->activeCourse, 
					// 	'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;
		}

		/* 
		 * Updates the details of a user. Takes a username and an associative array of data with the details to be changed 
		 */
		public function updateUser($username, $data) {
			$this->db->where("username", $username);
			$this->db->update("Users", $data);
		}


		/*
		 *	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;
		}
		
				/*
		 *	This function returns the name (or FALSE if user isn't logged in).
		 *  RESTRICTED-LEVEL: System
		 */ 
		public function getName() {
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				return $temp['name'];
			}
			
			return FALSE;
		}
		
				/*
		 *	This function returns the SSN (or FALSE if user isn't logged in).
		 *  RESTRICTED-LEVEL: System
		 */ 
		public function getSSN() {
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				return $temp['ssn'];
			}
			
			return FALSE;
		}
		
		
		/*
		* This function fetches the active course info
		*/
		public function getActiveCourse(){
			
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				$courseID = $temp['activeCourse'];
				$courseName;
			
				//Query-structure
				$this->db->select('name');
				$this->db->from('Courses');
				$this->db->where('courseID', $courseID);
				$this->db->limit(1);
				//Execute query
				$query = $this->db->get();
				$result = $query->result();

				foreach($result as $row) {
					$courseName = $row->name;
				}
				
				$data = array(
					'courseID' => $courseID,
					'courseName' => $courseName
				);
				
				return $data;
			}
			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
85.1.8 by a11andoh added the cms controller to load all content pages.	54	$this->db->select('userName, name, passwd, userType, ssn, activeCourse'); // 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,
85.1.8 by a11andoh added the cms controller to load all content pages.	74	'activeCourse' => $row->activeCourse,
64.1.1 by b11johgu ExamplesController:	75	// 'firstLogin' => $row->firstLogin
36.3.1 by Daniel Hermansson Added login functionality	76	);
	77	}
	78
	79	//Set session data
	80	$this->session->set_userdata('authenticated', $userDetails);
	81
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	82	//Log attempt as valid
	83	$this->logLogin($username, 1);
	84
36.3.1 by Daniel Hermansson Added login functionality	85	//Return success
36.3.1 by Daniel Hermansson Added login functionality	86	return TRUE;
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	87	}
	88
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	89	//Log attempt as invalid
	90	$this->logLogin($username, 0);
	91
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	92	//Return fail
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	93	return FALSE;
36.3.1 by Daniel Hermansson Added login functionality	94	}
	95
	96
	97	/*
	98	* This function logs the user out.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	99	* RESTRICTED-LEVEL: Self
64.1.1 by b11johgu ExamplesController:	100	*/
64.1.1 by b11johgu ExamplesController:	101	public function logout() {
36.3.1 by Daniel Hermansson Added login functionality	102	//Unset session data
	103	$this->session->unset_userdata('authenticated');
	104	}
64.1.1 by b11johgu ExamplesController:	105
36.3.1 by Daniel Hermansson Added login functionality	106
36.3.1 by Daniel Hermansson Added login functionality	107	/*
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	108	* This function changes the users password.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	109	* RESTRICTED-LEVEL: Self
64.1.1 by b11johgu ExamplesController:	110	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	111	public function changePassword($pwdOld, $pwdNew, $pwdHint) {
	112	//Check that a user is logged in.
	113	if($this->isLoggedIn()) {
	114	$user = $this->getUserName();
	115	$oldHash = $this->getSaltedHash($pwdOld);
	116	$newHash = $this->getSaltedHash($pwdNew);
	117
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	118	//Validate input with database
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	119	$this->db->select('userName');
	120	$this->db->from('Users');
	121	$this->db->where('userName', $user);
	122	$this->db->where('passwd', $oldHash);
	123	$this->db->limit(1);
	124	$query = $this->db->get();
	125	$result = $query->result();
	126
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	127	//If a matching DB record is found, update database.
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	128	if($result) {
	129	$data = array(
	130	'passwd' => $newHash,
	131	'passwdHint' => $pwdHint
	132	);
	133
	134	$this->db->where('userName', $user);
	135	$this->db->update('Users', $data);
	136
	137	//Return Success!
64.1.1 by b11johgu ExamplesController:	138	return TRUE;
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	139	}
	140	}
	141
	142	//Return error
	143	return FALSE;
	144	}
	145
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	146
	147	/*
	148	* This function registers user into the database.
	149	* RESTRICTED-LEVEL: Teacher
	150	*/
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	151	public function addUser($userName, $name, $ssn, $password, $userType, $pwdHint, $email) {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	152	//Check that a user is logged in and has the right privileges (is teacher)
	153	if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
	154	//Generate a salted hash
	155	$hash = $this->getSaltedHash($password);
	156
	157	//Query-structure (All values are escaped automatically by codeigninte, producing safer queries.)
	158	$this->db->set('userName', $userName);
	159	$this->db->set('name', $name);
	160	$this->db->set('ssn', $ssn);
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	161	$this->db->set('passwd', $hash);
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	162	$this->db->set('userType', $userType);
	163	$this->db->set('passwdHint', $pwdHint);
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	164	$this->db->set('email', $email);
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	165	$result = $this->db->insert('Users');
	166
	167	//Check for my-sql error
	168	if($result) {
	169	//Return success
	170	return TRUE;
69.1.1 by Daniel Hermansson Modified addUser-method to also take email as a argument	171	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	172	}
	173
	174	//Return error
	175	return FALSE;
	176	}
64.1.1 by b11johgu ExamplesController:	177
83.2.15 by elof.bigestans at gmail Continuing work on viewstudents	178	/*
	179	* Updates the details of a user. Takes a username and an associative array of data with the details to be changed
	180	*/
	181	public function updateUser($username, $data) {
	182	$this->db->where("username", $username);
	183	$this->db->update("Users", $data);
	184	}
	185
64.1.1 by b11johgu ExamplesController:	186
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	187	/*
	188	* This function removes users from the database.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	189	* RESTRICTED-LEVEL: Teacher
64.1.1 by b11johgu ExamplesController:	190	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	191	public function removeUser($userName) {
	192	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	193	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	194	//Query-structure
	195	$this->db->where('userName', $userName);
64.1.1 by b11johgu ExamplesController:	196	$result = $this->db->delete('Users');
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	197
	198	//Check for my-sql error
	199	if($result) {
	200	//Return success
	201	return TRUE;
64.1.1 by b11johgu ExamplesController:	202	}
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	203	}
	204
	205	//Return error
	206	return FALSE;
	207	}
64.1.1 by b11johgu ExamplesController:	208
64.1.1 by b11johgu ExamplesController:	209
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	210	/*
	211	* This reset the password for the user.
	212	* RESTRICTED-LEVEL: Teacher
	213	*/
	214	public function resetUser($userName) {
	215	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	216	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	217	//Check user type
	218	$this->db->select('userName, userType, ssn, email');
	219	$this->db->from('Users');
	220	$this->db->where('userName', $username);
	221	$this->db->limit(1);
	222	$query = $this->db->get();
	223	$result = $query->result();
	224
	225	//If a matching DB record is found.
	226	if($result) {
	227	//Prepare new hash depending on user-type
	228	$newPwdHash = '';
	229
	230	if ($row->userType == 'Student') {
	231	$newPwdHash = $this->getSaltedHash($row->ssn);
	232	}
	233	else if ($row->userType == 'Teacher') {
	234	//$newPwdHash = $this->getSaltedHash($row->email);
	235	$newPwdHash = $this->getSaltedHash($row->email);
	236	}
	237
	238	//Execute reset
	239	$data = array(
	240	'passwd' => $newPwdHash,
64.1.1 by b11johgu ExamplesController:	241	'passwdHint' => 'default',
64.1.1 by b11johgu ExamplesController:	242	'firstLogin' => 1
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	243	);
	244
	245	$this->db->where('userName', $userName);
	246	$this->db->update('Users', $data);
	247
	248	//Return Success!
	249	return TRUE;
	250	}
	251	}
	252
	253	//Return error
	254	return FALSE;
	255	}
64.1.1 by b11johgu ExamplesController:	256
64.1.1 by b11johgu ExamplesController:	257
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	258	/*
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	259	* This parses a user list from ladok and returns an array with users.
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	260	* RESTRICTED-LEVEL: Teacher
	261	*/
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	262	public function parseLadok($string) {
	263	//Check that a user is logged in and has the right privileges (is teacher).
	264	if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
	265	$userArray = array();
	266
	267	//Populate array with users from ladok
	268	$ladokUsers = preg_split( '/\r\n\|\r\|\n/', $string);
	269
	270	//Trim lines
	271	foreach ($ladokUsers as $key => $value) {
	272	$ladokUsers[$key] = trim($ladokUsers[$key]);
	273	}
	274
	275	//Split after last name
	276	foreach ($ladokUsers as $key => $value) {
	277	$ladokUsers[$key] = explode(',', trim($ladokUsers[$key]));
	278	}
	279
	280	//Replace whitespaces and tabs with divider.
	281	foreach ($ladokUsers as $key => $value) {
	282	foreach ($ladokUsers[$key] as $key2 => $value2) {
	283	$ladokUsers[$key][$key2] = preg_replace('/\s+/', ' ', trim($ladokUsers[$key][$key2]));
	284	}
	285	}
	286
	287	//Generate user array
	288	foreach ($ladokUsers as $key => $value) {
	289	$temp = array(
	290	'ssn' => substr($ladokUsers[$key][0], 0, 11),
	291	'lastname' => substr($ladokUsers[$key][0], 12, strlen($ladokUsers[$key][0])),
	292	'firstname' => substr($ladokUsers[$key][1], 0, stripos($ladokUsers[$key][1], ' ')),
	293	'email' => substr($ladokUsers[$key][1], (strrpos($ladokUsers[$key][1], ' ') + 1))
	294	);
69.1.2 by Daniel Hermansson Modified ladok parser, functionality for getting username was missing	295	$temp['username'] = substr($temp['email'], 0, (stripos($temp['email'], '@')));
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	296	array_push($userArray, $temp);
	297	}
	298
	299	//Return parsed user array
	300	return $userArray;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	301	}
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	302
	303	//If not authed
	304	return FALSE;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	305	}
64.1.1 by b11johgu ExamplesController:	306
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	307
	308	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	309	* Generates a salted password hash, encrypted with sha1.
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	310	* RESTRICTED-LEVEL: System
	311	*/
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	312	private function getSaltedHash($pwd) {
	313	//Salt = CodeIgniters encryption-key from config
	314	$salt = $this->config->item('encryption_key');
36.3.1 by Daniel Hermansson Added login functionality	315
	316	//Generate SHA1 hash using salt
	317	$hash = sha1($salt.$pwd);
	318
	319	return $hash;
	320	}
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	321
	322
	323	/*
	324	* Log the login attempt.
	325	* RESTRICTED-LEVEL: System
	326	*/
	327	private function logLogin($userName, $valid) {
	328	$data = array(
	329	'userName' => $userName,
	330	'userAgent' => $this->session->userdata('user_agent'),
	331	'userIP' => $this->session->userdata('ip_address'),
64.1.1 by b11johgu ExamplesController:	332	'browserID' => $this->session->userdata('session_id'),
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	333	'success' => $valid
	334	);
	335
	336	$this->db->insert('logUserLoginAttempts', $data);
	337	}
64.1.1 by b11johgu ExamplesController:	338
64.1.1 by b11johgu ExamplesController:	339
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	340	/*
	341	* This function return TRUE if the user is logged in and FALSE otherwise.
	342	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	343	*/
64.1.1 by b11johgu ExamplesController:	344	public function isLoggedIn() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	345	if ($this->session->userdata('authenticated')) {
	346	return TRUE;
	347	}
64.1.1 by b11johgu ExamplesController:	348	else{
	349	return FALSE;
	350	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	351	}
64.1.1 by b11johgu ExamplesController:	352
64.1.1 by b11johgu ExamplesController:	353
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	354	/*
	355	* This function returns the users type (or FALSE if user isn't logged in).
	356	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	357	*/
64.1.1 by b11johgu ExamplesController:	358	public function getUserType() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	359	if($this->isLoggedIn()) {
	360	$temp = $this->session->userdata('authenticated');
	361	return $temp['usertype'];
	362	}
	363
	364	return FALSE;
	365	}
64.1.1 by b11johgu ExamplesController:	366
64.1.1 by b11johgu ExamplesController:	367
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	368	/*
62.1.4 by Daniel Hermansson Added method for checking if its the first time a user logs on or not (to know when to require them to change password)	369	* This function returns a boolean containing information if it is the first login.
	370	* RESTRICTED-LEVEL: System
	371	*/
	372	public function isFirstLogin() {
	373	if($this->isLoggedIn()) {
	374	$temp = $this->session->userdata('authenticated');
	375	if ($temp['firstLogin'] == 1) {
	376	return TRUE;
	377	}
	378	}
	379
	380	return FALSE;
	381	}
64.1.1 by b11johgu ExamplesController:	382
64.1.1 by b11johgu ExamplesController:	383
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)	384	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	385	* This function returns the username (or FALSE if user isn't logged in).
	386	* RESTRICTED-LEVEL: System
	387	*/
64.1.1 by b11johgu ExamplesController:	388	public function getUserName() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	389	if($this->isLoggedIn()) {
	390	$temp = $this->session->userdata('authenticated');
	391	return $temp['username'];
	392	}
	393
	394	return FALSE;
	395	}
85.1.8 by a11andoh added the cms controller to load all content pages.	396
85.1.27 by a11andoh added function to get ssn and name for the registrationspages in the user model.	397	/*
	398	* This function returns the name (or FALSE if user isn't logged in).
	399	* RESTRICTED-LEVEL: System
	400	*/
	401	public function getName() {
	402	if($this->isLoggedIn()) {
	403	$temp = $this->session->userdata('authenticated');
	404	return $temp['name'];
	405	}
	406
	407	return FALSE;
	408	}
	409
	410	/*
	411	* This function returns the SSN (or FALSE if user isn't logged in).
	412	* RESTRICTED-LEVEL: System
	413	*/
	414	public function getSSN() {
	415	if($this->isLoggedIn()) {
	416	$temp = $this->session->userdata('authenticated');
	417	return $temp['ssn'];
	418	}
	419
	420	return FALSE;
	421	}
	422
	423
85.1.8 by a11andoh added the cms controller to load all content pages.	424	/*
90.1.9 by a11emmjo Updated branch.	425	* This function fetches the active course info
85.1.8 by a11andoh added the cms controller to load all content pages.	426	*/
	427	public function getActiveCourse(){
90.1.9 by a11emmjo Updated branch.	428
85.1.8 by a11andoh added the cms controller to load all content pages.	429	if($this->isLoggedIn()) {
	430	$temp = $this->session->userdata('authenticated');
90.1.9 by a11emmjo Updated branch.	431	$courseID = $temp['activeCourse'];
	432	$courseName;
	433
	434	//Query-structure
	435	$this->db->select('name');
	436	$this->db->from('Courses');
	437	$this->db->where('courseID', $courseID);
	438	$this->db->limit(1);
	439	//Execute query
	440	$query = $this->db->get();
	441	$result = $query->result();
	442
	443	foreach($result as $row) {
	444	$courseName = $row->name;
	445	}
	446
	447	$data = array(
	448	'courseID' => $courseID,
	449	'courseName' => $courseName
	450	);
	451
	452	return $data;
85.1.8 by a11andoh added the cms controller to load all content pages.	453	}
	454	return FALSE;
	455	}
36.3.1 by Daniel Hermansson Added login functionality	456	}
36.3.1 by Daniel Hermansson Added login functionality	457	?>