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php写的一个登录验证类

时间：2021-07-01 10:21:17 帮助过：22人阅读

  3. final class UserLogin {

  4. public function __construct() {

  6. }
  7. public static function getUserInfo() {
  8. if (isset($_COOKIE["user_id"])&&$_COOKIE["user_id"]&&(trim($_COOKIE["user_id"])!="")) {
  9. if (isset($_SESSION["USER_INFO"]))
  10. return $_SESSION["USER_INFO"];
  11. $dao = new UserDao();
  12. $user = $dao->find($_COOKIE["user_id"]);
  13. if ($user) {
  14. $_SESSION["USER_INFO"] = $user;
  15. setcookie("docloud_sid", session_id(), time() + 36000);
  16. setcookie("user_id", $_COOKIE["user_id"], time() + 36000);
  18. if (array_key_exists("selected_prj_id", $_COOKIE))
  19. setcookie("selected_prj_id", $_COOKIE["selected_prj_id"], time() + 36000);
  21. if (array_key_exists("selected_class_id", $_COOKIE))
  22. setcookie("selected_class_id", $_COOKIE["selected_class_id"], time() + 36000);
  24. if (array_key_exists("selected_image_id", $_COOKIE))
  25. setcookie("selected_image_id", $_COOKIE["selected_image_id"], time() + 36000);
  27. if (array_key_exists("test_image_ids", $_COOKIE))
  28. setcookie("test_image_ids", $_COOKIE["test_image_ids"], time() + 36000);
  30. if (array_key_exists("upload_image_ids", $_COOKIE))
  31. setcookie("upload_image_ids", $_COOKIE["upload_image_ids"], time() + 36000);
  32. return $user;
  33. }
  34. }
  35. self::clearCookie();
  36. return null;
  37. }

  38. public static function setUserInfo($userInfo) {

  39. $_SESSION["USER_INFO"] = $userInfo;
  40. setcookie("docloud_sid", session_id(), time() + 36000);
  41. setcookie("user_id", $userInfo->getId(), time() + 36000);
  42. }

  43. public static function isLogin() {

  44. if (self::getUserInfo()) {
  45. return true;
  46. }
  47. return false;
  48. }

  49. public static function delUserInfo() {

  50. self::clearCookie();
  51. session_destroy();
  52. }
  54. private static function clearCookie() {
  55. setcookie("docloud_sid", "", time() - 36000);
  56. setcookie("user_id", "", time() - 36000);
  57. setcookie("selected_prj_id", "", time() - 36000);
  58. setcookie("selected_class_id", "", time() - 36000);
  59. setcookie("selected_image_id", "", time() - 36000);
  60. setcookie("test_image_ids", "", time() - 36000);
  61. setcookie("upload_image_ids", "", time() - 36000);
  62. }
  63. }

  64. /**

  65. * Validator for Login.
  66. */
  67. final class LoginValidator {
  68. private function __construct() {
  69. }

  70. /**

  71. * Validate the given username and password.
  72. * @param $username and $password to be validated
  73. * @return array array of {@link Error} s
  74. */
  75. public static function validate($username, $password) {
  76. $errors = array();
  77. $username = trim($username);
  78. if (!$username) {
  79. $errors[] = new Error('username', '用户名不能为空。');
  80. } elseif (strlen($username)<3) {
  81. $errors[] = new Error('username', '用户名长度不能小于3个字符。');
  82. } elseif (strlen($username)>30) {
  83. $errors[] = new Error('username', '用户名长度不能超过30个字符。');
  84. } elseif (!preg_match('/^[A-Za-z]+$/',substr($username, 0, 1))) {
  85. $errors[] = new Error('username', '用户名必须以字母开头。');
  86. } elseif (!preg_match('/^[A-Za-z0-9_]+$/', $username)) {
  87. $errors[] = new Error('username', '用户名只能是字母、数字以及下划线( _ )的组合。');
  88. } elseif (!trim($password)) {
  89. $errors[] = new Error('password', '密码不能为空。');
  90. } else {
  91. // check whether use exists or not
  92. $dao = new UserDao();
  93. $user = $dao->findByName($username);

  94. if ($user) {

  95. if (!($user->getPassword() == sha1($user->getSalt() . $password))) {
  96. $errors[] = new Error('password', '用户名或密码错误。');
  97. }
  98. } else {
  99. $errors[] = new Error('username', '用户名不存在。');
  100. }
  101. }
  102. return $errors;
  103. }
  104. }

  105. /**

  106. * Validation error.
  107. */
  108. final class Error {
  109. private $source;
  110. private $message;

  111. /**

  112. * Create new error.
  113. * @param mixed $source source of the error
  114. * @param string $message error message
  115. */
  116. function __construct($source, $message) {
  117. $this->source = $source;
  118. $this->message = $message;
  119. }

  120. /**

  121. * Get source of the error.
  122. * @return mixed source of the error
  123. */
  124. public function getSource() {
  125. return $this->source;
  126. }

  127. /**

  128. * Get error message.
  129. * @return string error message
  130. */
  131. public function getMessage() {
  132. return $this->message;
  133. }
  134. }

  135. // if logged in, logout 页面的跳转类在http://www.cnblogs.com/setsail/archive/2012/12/18/2823231.html 里这里不再重复书写

  136. if (UserLogin::isLogin() && $_COOKIE["user_id"]==1) {
  137. UserLogin::delUserInfo();
  138. }elseif (UserLogin::isLogin()){
  139. Utils::redirect('welcome');
  140. }

  141. $username = null;

  142. $password = null;
  143. $msg = "";

  144. if (isset($_POST['username']) && isset($_POST['password'])) {

  145. $username = addslashes(trim(stripslashes($_POST ['username'])));
  146. $password = addslashes(trim(stripslashes($_POST ['password'])));
  147. // validate
  148. $errors = LoginValidator::validate($username, $password);
  150. if (empty($errors)) {
  151. // save
  152. $dao = new UserDao();
  153. $user = $dao->findByName($username);
  154. $last_login_ip = Utils::getIpAddress();
  155. $user->setLastLoginIp($last_login_ip);
  156. $now = new DateTime();
  157. $user->setLastLoginTime($now);
  158. $dao->save($user);
  159. UserLogin::setUserInfo($user);
  160. Flash::addFlash('登录成功！');
  161. Utils::redirect('welcome');
  162. }
  164. foreach ($errors as $e) {
  165. $msg .= $e->getMessage()."
    ";
  166. }
  167. }
  168. ?>

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