/lenasys/trunk

                 */

                public function login($username, $password) {                   

                                //Log attempt as valid

                                $this->logLogin($username, 1);

                                

                        //Log attempt as invalid

                        $this->logLogin($username, 0);

 

                        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'

                                        );

                                        

                                        $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]));

                                        }

                                }

                                

                                //Explode on whitespace on second split

                                foreach ($ladokUsers as $key => &$value) {

                                        $ladokUsers[$key][1] = explode(' ', trim($ladokUsers[$key][1]));

                                }       

                                

                                //Generate user array

                                $i = 0;

                                foreach ($ladokUsers as $key => $value) {

                                        $userArray[$i]['ssn'] = substr($ladokUsers[$key][0], 0, 11);

                                        $userArray[$i]['lastname'] = substr($ladokUsers[$key][0], 12, strlen($ladokUsers[$key][0]));

                                        $userArray[$i]['firstname'] = $ladokUsers[$key][1][0];

                                        $userArray[$i]['email'] = $ladokUsers[$key][1][3];

                                        $i++;

                                }

                                

                                //Return parsed user array

                                return $userArray;

                        }

                        

                        //If not authed

                        return FALSE;

                }

                

                 *  RESTRICTED-LEVEL: System

                 */

 

 

                /*

                 *      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'), //TODO: change later?

                                'success' => $valid

                        );

                        

                        $this->db->insert('logUserLoginAttempts', $data);

                }

                 *      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;

                }

                

                

                /*