/lenasys/trunk : contents of codeigniter/application/models/user.php at revision 85.1.8

: (revision 85.1.8)

To get this branch, use:

bzr branch
http://gegoxaren.bato24.eu/bzr/lenasys/trunk

<?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;
		}


		/*
		 *	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 fetches the active course from the user table
		*/
		public function getActiveCourse(){
			if($this->isLoggedIn()) {
				$temp = $this->session->userdata('authenticated');
				return $temp['activeCourse'];	
			}
			
			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
64.1.1 by b11johgu ExamplesController:	178
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	179	/*
	180	* This function removes users from the database.
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	181	* RESTRICTED-LEVEL: Teacher
64.1.1 by b11johgu ExamplesController:	182	*/
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	183	public function removeUser($userName) {
	184	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	185	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	186	//Query-structure
	187	$this->db->where('userName', $userName);
64.1.1 by b11johgu ExamplesController:	188	$result = $this->db->delete('Users');
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	189
	190	//Check for my-sql error
	191	if($result) {
	192	//Return success
	193	return TRUE;
64.1.1 by b11johgu ExamplesController:	194	}
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	195	}
	196
	197	//Return error
	198	return FALSE;
	199	}
64.1.1 by b11johgu ExamplesController:	200
64.1.1 by b11johgu ExamplesController:	201
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	202	/*
	203	* This reset the password for the user.
	204	* RESTRICTED-LEVEL: Teacher
	205	*/
	206	public function resetUser($userName) {
	207	//Check that a user is logged in, has the right privileges (is teacher) and not is the users own username.
	208	if($this->isLoggedIn() && $this->getUserType() === 'Teacher' && $this->getUserName() != $userName) {
	209	//Check user type
	210	$this->db->select('userName, userType, ssn, email');
	211	$this->db->from('Users');
	212	$this->db->where('userName', $username);
	213	$this->db->limit(1);
	214	$query = $this->db->get();
	215	$result = $query->result();
	216
	217	//If a matching DB record is found.
	218	if($result) {
	219	//Prepare new hash depending on user-type
	220	$newPwdHash = '';
	221
	222	if ($row->userType == 'Student') {
	223	$newPwdHash = $this->getSaltedHash($row->ssn);
	224	}
	225	else if ($row->userType == 'Teacher') {
	226	//$newPwdHash = $this->getSaltedHash($row->email);
	227	$newPwdHash = $this->getSaltedHash($row->email);
	228	}
	229
	230	//Execute reset
	231	$data = array(
	232	'passwd' => $newPwdHash,
64.1.1 by b11johgu ExamplesController:	233	'passwdHint' => 'default',
64.1.1 by b11johgu ExamplesController:	234	'firstLogin' => 1
62.1.2 by Daniel Hermansson Added functionality for resetting a users password	235	);
	236
	237	$this->db->where('userName', $userName);
	238	$this->db->update('Users', $data);
	239
	240	//Return Success!
	241	return TRUE;
	242	}
	243	}
	244
	245	//Return error
	246	return FALSE;
	247	}
64.1.1 by b11johgu ExamplesController:	248
64.1.1 by b11johgu ExamplesController:	249
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	250	/*
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	251	* This parses a user list from ladok and returns an array with users.
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	252	* RESTRICTED-LEVEL: Teacher
	253	*/
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	254	public function parseLadok($string) {
	255	//Check that a user is logged in and has the right privileges (is teacher).
	256	if($this->isLoggedIn() && $this->getUserType() === 'Teacher') {
	257	$userArray = array();
	258
	259	//Populate array with users from ladok
	260	$ladokUsers = preg_split( '/\r\n\|\r\|\n/', $string);
	261
	262	//Trim lines
	263	foreach ($ladokUsers as $key => $value) {
	264	$ladokUsers[$key] = trim($ladokUsers[$key]);
	265	}
	266
	267	//Split after last name
	268	foreach ($ladokUsers as $key => $value) {
	269	$ladokUsers[$key] = explode(',', trim($ladokUsers[$key]));
	270	}
	271
	272	//Replace whitespaces and tabs with divider.
	273	foreach ($ladokUsers as $key => $value) {
	274	foreach ($ladokUsers[$key] as $key2 => $value2) {
	275	$ladokUsers[$key][$key2] = preg_replace('/\s+/', ' ', trim($ladokUsers[$key][$key2]));
	276	}
	277	}
	278
	279	//Generate user array
	280	foreach ($ladokUsers as $key => $value) {
	281	$temp = array(
	282	'ssn' => substr($ladokUsers[$key][0], 0, 11),
	283	'lastname' => substr($ladokUsers[$key][0], 12, strlen($ladokUsers[$key][0])),
	284	'firstname' => substr($ladokUsers[$key][1], 0, stripos($ladokUsers[$key][1], ' ')),
	285	'email' => substr($ladokUsers[$key][1], (strrpos($ladokUsers[$key][1], ' ') + 1))
	286	);
69.1.2 by Daniel Hermansson Modified ladok parser, functionality for getting username was missing	287	$temp['username'] = substr($temp['email'], 0, (stripos($temp['email'], '@')));
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	288	array_push($userArray, $temp);
	289	}
	290
	291	//Return parsed user array
	292	return $userArray;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	293	}
68.1.1 by Daniel Hermansson Modified and corrected parser functionality.	294
	295	//If not authed
	296	return FALSE;
62.1.3 by Daniel Hermansson Added functionality for parsing a user list from ladok into a user array (for future use)	297	}
64.1.1 by b11johgu ExamplesController:	298
52.1.1 by b11johgu Added controllers for examplepage, templatelayout.	299
	300	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	301	* Generates a salted password hash, encrypted with sha1.
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	302	* RESTRICTED-LEVEL: System
	303	*/
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	304	private function getSaltedHash($pwd) {
	305	//Salt = CodeIgniters encryption-key from config
	306	$salt = $this->config->item('encryption_key');
36.3.1 by Daniel Hermansson Added login functionality	307
	308	//Generate SHA1 hash using salt
	309	$hash = sha1($salt.$pwd);
	310
	311	return $hash;
	312	}
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	313
	314
	315	/*
	316	* Log the login attempt.
	317	* RESTRICTED-LEVEL: System
	318	*/
	319	private function logLogin($userName, $valid) {
	320	$data = array(
	321	'userName' => $userName,
	322	'userAgent' => $this->session->userdata('user_agent'),
	323	'userIP' => $this->session->userdata('ip_address'),
64.1.1 by b11johgu ExamplesController:	324	'browserID' => $this->session->userdata('session_id'),
62.1.1 by Daniel Hermansson Cleaned code and added logging of logins	325	'success' => $valid
	326	);
	327
	328	$this->db->insert('logUserLoginAttempts', $data);
	329	}
64.1.1 by b11johgu ExamplesController:	330
64.1.1 by b11johgu ExamplesController:	331
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	332	/*
	333	* This function return TRUE if the user is logged in and FALSE otherwise.
	334	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	335	*/
64.1.1 by b11johgu ExamplesController:	336	public function isLoggedIn() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	337	if ($this->session->userdata('authenticated')) {
	338	return TRUE;
	339	}
64.1.1 by b11johgu ExamplesController:	340	else{
	341	return FALSE;
	342	}
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	343	}
64.1.1 by b11johgu ExamplesController:	344
64.1.1 by b11johgu ExamplesController:	345
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	346	/*
	347	* This function returns the users type (or FALSE if user isn't logged in).
	348	* RESTRICTED-LEVEL: System
64.1.1 by b11johgu ExamplesController:	349	*/
64.1.1 by b11johgu ExamplesController:	350	public function getUserType() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	351	if($this->isLoggedIn()) {
	352	$temp = $this->session->userdata('authenticated');
	353	return $temp['usertype'];
	354	}
	355
	356	return FALSE;
	357	}
64.1.1 by b11johgu ExamplesController:	358
64.1.1 by b11johgu ExamplesController:	359
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	360	/*
62.1.4 by Daniel Hermansson Added method for checking if its the first time a user logs on or not (to know when to require them to change password)	361	* This function returns a boolean containing information if it is the first login.
	362	* RESTRICTED-LEVEL: System
	363	*/
	364	public function isFirstLogin() {
	365	if($this->isLoggedIn()) {
	366	$temp = $this->session->userdata('authenticated');
	367	if ($temp['firstLogin'] == 1) {
	368	return TRUE;
	369	}
	370	}
	371
	372	return FALSE;
	373	}
64.1.1 by b11johgu ExamplesController:	374
64.1.1 by b11johgu ExamplesController:	375
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)	376	/*
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	377	* This function returns the username (or FALSE if user isn't logged in).
	378	* RESTRICTED-LEVEL: System
	379	*/
64.1.1 by b11johgu ExamplesController:	380	public function getUserName() {
53.2.2 by Daniel Hermansson Activated hash salting, and cleaned up some code.	381	if($this->isLoggedIn()) {
	382	$temp = $this->session->userdata('authenticated');
	383	return $temp['username'];
	384	}
	385
	386	return FALSE;
	387	}
85.1.8 by a11andoh added the cms controller to load all content pages.	388
	389	/*
	390	* This function fetches the active course from the user table
	391	*/
	392	public function getActiveCourse(){
	393	if($this->isLoggedIn()) {
	394	$temp = $this->session->userdata('authenticated');
	395	return $temp['activeCourse'];
	396	}
	397
	398	return FALSE;
	399	}
36.3.1 by Daniel Hermansson Added login functionality	400	}
64.1.1 by b11johgu ExamplesController:	401
36.3.1 by Daniel Hermansson Added login functionality	402	?>