96 行
1.9 KiB
PHP
96 行
1.9 KiB
PHP
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<?php
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// Uses 'phpass' from http://www.openwall.com/phpass/ to implement password hashing
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require_once('application/third_party/PasswordHash.php');
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class Auth_Model extends CI_Model {
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function __construct()
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{
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// Call the Model constructor
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parent::__construct();
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}
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// Test function, can be removed once class is complete
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function test() {
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$hash = $this->_hash("password");
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echo "Password hashed is '".$hash."\n";
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echo "Does 'password' match '$hash'? result is ".$this->_auth("password", $hash)."\n";
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}
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// Retrieve a user
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function get($username) {
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$this->db->where('user_name', $username);
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$r = $this->db->get($this->config->item('auth_table'));
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if($r->num_rows == 1) {
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return $r->result();
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} else {
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return 0;
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}
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}
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function exists($username) {
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if($this->get($username)->num_rows == 0) {
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return 0;
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} else {
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return 1;
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}
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}
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function add($username, $password, $email, $type) {
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if(!$this->exists($username)) {
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$data = array(
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'user_name' => $username,
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'user_password' => $this->_hash($password),
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'user_email' => $email,
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'user_type' => $type
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);
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$this->db->insert($this->config->item('auth_table'));
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return 1;
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} else {
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return 0;
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}
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}
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function authenticate($username, $password) {
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$u = $this->get($username);
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if($this->_hash($password, $u['user_password'])) {
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return 1;
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} else {
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return 0;
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}
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}
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function set($username, $data) {
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$this->db->where('user_name', $username);
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$this->db->update($this->config->item('auth_table', $data));
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return 1;
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}
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private function _auth($password, $hash) {
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$h = new PasswordHash(8, FALSE);
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if($h->CheckPassword($password, $hash)) {
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return 1;
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} else {
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return 0;
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}
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}
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private function _hash($password) {
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$h = new PasswordHash(8, FALSE);
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$hash = $h->HashPassword($password);
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unset($h);
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if(strlen($hash) < 20) {
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return 0;
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} else {
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return $hash;
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}
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}
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}
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?>
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