PHP captcha::getInstance方法代码示例

 /**
  * Password recovery for user accounts using email or username.
  * Password reset string is sent to users email.
  *
  * @param array $tag_params
  * @param array $children
  */
 public function recoverPasswordByEmail($tag_params, $children)
 {
     $result = array('error' => true, 'message' => '');
     // make sure contact form module is enabled
     if (!class_exists('contact_form')) {
         if (_AJAX_REQUEST) {
             $result['message'] = $this->parent->getLanguageConstant('message_no_contact_form');
             print json_encode($result);
             return;
         } else {
             $template = $this->parent->loadTemplate($tag_params, 'message.xml');
             $result['message'] = $this->parent->getLanguageConstant('message_no_contact_form');
             $template->restoreXML();
             $template->setLocalParams($result);
             $template->parse();
             return;
         }
     }
     if (!class_exists('captcha')) {
         if (_AJAX_REQUEST) {
             $result['message'] = $this->parent->getLanguageConstant('message_no_captcha');
             print json_encode($result);
             return;
         } else {
             $template = $this->parent->loadTemplate($tag_params, 'message.xml');
             $result['message'] = $this->parent->getLanguageConstant('message_no_captcha');
             $template->restoreXML();
             $template->setLocalParams($result);
             $template->parse();
             return;
         }
     }
     // get required module instances
     $manager = UserManager::getInstance();
     $verification_manager = UserVerificationManager::getInstance();
     $contact_form = contact_form::getInstance();
     $captcha_module = captcha::getInstance();
     $username = null;
     $email = null;
     $captcha = null;
     $conditions = array();
     // get username
     if (array_key_exists('username', $tag_params)) {
         $username = fix_chars($tag_params['username']);
     }
     if (is_null($username) && array_key_exists('username', $_REQUEST)) {
         $username = fix_chars($_REQUEST['username']);
     }
     // get email
     if (array_key_exists('email', $tag_params)) {
         $email = fix_chars($tag_params['email']);
     }
     if (is_null($email) && array_key_exists('email', $_REQUEST)) {
         $email = fix_chars($_REQUEST['email']);
     }
     // get captcha value
     if (array_key_exists('captcha', $tag_params)) {
         $captcha = fix_chars($tag_params['captcha']);
     }
     if (is_null($captcha) && array_key_exists('captcha', $_REQUEST)) {
         $captcha = fix_chars($_REQUEST['captcha']);
     }
     // get user from the database
     if (!is_null($username)) {
         $conditions['username'] = $username;
     }
     if (!is_null($email)) {
         $conditions['email'] = $email;
     }
     $user = $manager->getSingleItem($manager->getFieldNames(), $conditions);
     $captcha_valid = $captcha_module->isCaptchaValid($captcha);
     // send email
     if (is_object($user) && $captcha_valid) {
         $code = $contact_form->generateVerificationCode($user->username, $user->email);
         // insert verification code
         $verification_data = array('user' => $user->id, 'code' => $code);
         $verification_manager->insertData($verification_data);
         // prepare email
         $fields = array('fullname' => $user->fullname, 'username' => $user->username, 'email' => $user->email, 'code' => $code);
         $mailer = $contact_form->getMailer();
         $sender = $contact_form->getSender();
         $recipients = $contact_form->getRecipients();
         $template = $contact_form->getTemplate($this->parent->settings['template_recovery']);
         // start creating message
         $mailer->start_message();
         $mailer->set_subject($template['subject']);
         $mailer->set_sender($sender['address'], $sender['name']);
         foreach ($recipients as $recipient) {
             $mailer->add_recipient($recipient['address'], $recipient['name']);
         }
         $mailer->set_body($template['plain_body'], $template['html_body']);
         $mailer->set_variables($fields);
         // send email
//.........这里部分代码省略.........

 /**
  * Perform AJAX login
  */
 private function json_Login()
 {
     $captcha_ok = false;
     $username = fix_chars($_REQUEST['username']);
     $password = fix_chars($_REQUEST['password']);
     $captcha = isset($_REQUEST['captcha']) ? fix_chars($_REQUEST['captcha']) : '';
     $lasting_session = isset($_REQUEST['lasting']) && ($_REQUEST['lasting'] == 'on' || $_REQUEST['lasting'] == '1') ? true : false;
     $result = array('logged_in' => false, 'show_captcha' => false, 'message' => '');
     $manager = UserManager::getInstance();
     $retry_manager = LoginRetryManager::getInstance();
     // prepare hashed password
     $test_user = $manager->getSingleItem(array('salt'), array('username' => $username));
     if (is_object($test_user) && !empty($test_user->salt)) {
         // hash password using stored salt
         $hashed_password = hash_hmac('sha256', $password, $test_user->salt);
     } else {
         // old salting method
         $hashed_password = hash_hmac('sha256', $password, UserManager::SALT);
     }
     // get user based with password
     $user = $manager->getSingleItem($manager->getFieldNames(), array('username' => $username, 'password' => array($password, $hashed_password)));
     $retry_count = $retry_manager->getRetryCount();
     // check captcha
     if ($retry_count > 3) {
         // on purpose we make a separate condition, if captcha
         // module is not loaded, block IP address for one day
         if (class_exists('captcha')) {
             $captcha_module = captcha::getInstance();
             $captcha_ok = $captcha_module->isCaptchaValid($captcha);
             $captcha_module->resetCaptcha();
         }
     } else {
         $captcha_ok = true;
     }
     // check user data
     if (is_object($user) && $captcha_ok && $user->verified) {
         // remove login retries
         $retry_manager->clearAddress();
         // change session type
         if ($lasting_session) {
             Session::change_type(Session::TYPE_EXTENDED);
         }
         // set session variables
         $_SESSION['uid'] = $user->id;
         $_SESSION['logged'] = true;
         $_SESSION['level'] = $user->level;
         $_SESSION['username'] = $user->username;
         $_SESSION['fullname'] = $user->fullname;
         $result['logged_in'] = true;
     } elseif (is_object($user) && $captcha_ok && !$user->verified) {
         // user is logged but account is not verified
         $result['message'] = $this->parent->getLanguageConstant('message_users_account_not_verified');
     } else {
         // user is not logged in properly, increase fail
         // counter and present login window with message
         $count = $retry_manager->increaseCount();
         $result['message'] = $this->parent->getLanguageConstant('message_login_error');
         $result['show_captcha'] = $count > 3;
     }
     print json_encode($result);
 }