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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * User sign-up form.
  20   *
  21   * @package    core
  22   * @subpackage auth
  23   * @copyright  1999 onwards Martin Dougiamas  http://dougiamas.com
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  require_once($CFG->libdir.'/formslib.php');
  30  require_once($CFG->dirroot.'/user/profile/lib.php');
  31  require_once($CFG->dirroot . '/user/editlib.php');
  32  
  33  class login_signup_form extends moodleform {
  34      function definition() {
  35          global $USER, $CFG;
  36  
  37          $mform = $this->_form;
  38  
  39          $mform->addElement('header', 'createuserandpass', get_string('createuserandpass'), '');
  40  
  41  
  42          $mform->addElement('text', 'username', get_string('username'), 'maxlength="100" size="12"');
  43          $mform->setType('username', core_user::get_property_type('username'));
  44          $mform->addRule('username', get_string('missingusername'), 'required', null, 'client');
  45  
  46          if (!empty($CFG->passwordpolicy)){
  47              $mform->addElement('static', 'passwordpolicyinfo', '', print_password_policy());
  48          }
  49          $mform->addElement('passwordunmask', 'password', get_string('password'), 'maxlength="32" size="12"');
  50          $mform->setType('password', core_user::get_property_type('password'));
  51          $mform->addRule('password', get_string('missingpassword'), 'required', null, 'client');
  52  
  53          $mform->addElement('header', 'supplyinfo', get_string('supplyinfo'),'');
  54  
  55          $mform->addElement('text', 'email', get_string('email'), 'maxlength="100" size="25"');
  56          $mform->setType('email', core_user::get_property_type('email'));
  57          $mform->addRule('email', get_string('missingemail'), 'required', null, 'client');
  58  
  59          $mform->addElement('text', 'email2', get_string('emailagain'), 'maxlength="100" size="25"');
  60          $mform->setType('email2', core_user::get_property_type('email'));
  61          $mform->addRule('email2', get_string('missingemail'), 'required', null, 'client');
  62  
  63          $namefields = useredit_get_required_name_fields();
  64          foreach ($namefields as $field) {
  65              $mform->addElement('text', $field, get_string($field), 'maxlength="100" size="30"');
  66              $mform->setType($field, core_user::get_property_type('firstname'));
  67              $stringid = 'missing' . $field;
  68              if (!get_string_manager()->string_exists($stringid, 'moodle')) {
  69                  $stringid = 'required';
  70              }
  71              $mform->addRule($field, get_string($stringid), 'required', null, 'client');
  72          }
  73  
  74          $mform->addElement('text', 'city', get_string('city'), 'maxlength="120" size="20"');
  75          $mform->setType('city', core_user::get_property_type('city'));
  76          if (!empty($CFG->defaultcity)) {
  77              $mform->setDefault('city', $CFG->defaultcity);
  78          }
  79  
  80          $country = get_string_manager()->get_list_of_countries();
  81          $default_country[''] = get_string('selectacountry');
  82          $country = array_merge($default_country, $country);
  83          $mform->addElement('select', 'country', get_string('country'), $country);
  84  
  85          if( !empty($CFG->country) ){
  86              $mform->setDefault('country', $CFG->country);
  87          }else{
  88              $mform->setDefault('country', '');
  89          }
  90  
  91          profile_signup_fields($mform);
  92  
  93          if ($this->signup_captcha_enabled()) {
  94              $mform->addElement('recaptcha', 'recaptcha_element', get_string('security_question', 'auth'), array('https' => $CFG->loginhttps));
  95              $mform->addHelpButton('recaptcha_element', 'recaptcha', 'auth');
  96              $mform->closeHeaderBefore('recaptcha_element');
  97          }
  98  
  99          if (!empty($CFG->sitepolicy)) {
 100              $mform->addElement('header', 'policyagreement', get_string('policyagreement'), '');
 101              $mform->setExpanded('policyagreement');
 102              $mform->addElement('static', 'policylink', '', '<a href="'.$CFG->sitepolicy.'" onclick="this.target=\'_blank\'">'.get_String('policyagreementclick').'</a>');
 103              $mform->addElement('checkbox', 'policyagreed', get_string('policyaccept'));
 104              $mform->addRule('policyagreed', get_string('policyagree'), 'required', null, 'client');
 105          }
 106  
 107          // buttons
 108          $this->add_action_buttons(true, get_string('createaccount'));
 109  
 110      }
 111  
 112      function definition_after_data(){
 113          $mform = $this->_form;
 114          $mform->applyFilter('username', 'trim');
 115  
 116          // Trim required name fields.
 117          foreach (useredit_get_required_name_fields() as $field) {
 118              $mform->applyFilter($field, 'trim');
 119          }
 120      }
 121  
 122      function validation($data, $files) {
 123          global $CFG, $DB;
 124          $errors = parent::validation($data, $files);
 125  
 126          $authplugin = get_auth_plugin($CFG->registerauth);
 127  
 128          if ($DB->record_exists('user', array('username'=>$data['username'], 'mnethostid'=>$CFG->mnet_localhost_id))) {
 129              $errors['username'] = get_string('usernameexists');
 130          } else {
 131              //check allowed characters
 132              if ($data['username'] !== core_text::strtolower($data['username'])) {
 133                  $errors['username'] = get_string('usernamelowercase');
 134              } else {
 135                  if ($data['username'] !== core_user::clean_field($data['username'], 'username')) {
 136                      $errors['username'] = get_string('invalidusername');
 137                  }
 138  
 139              }
 140          }
 141  
 142          //check if user exists in external db
 143          //TODO: maybe we should check all enabled plugins instead
 144          if ($authplugin->user_exists($data['username'])) {
 145              $errors['username'] = get_string('usernameexists');
 146          }
 147  
 148  
 149          if (! validate_email($data['email'])) {
 150              $errors['email'] = get_string('invalidemail');
 151  
 152          } else if ($DB->record_exists('user', array('email'=>$data['email']))) {
 153              $errors['email'] = get_string('emailexists').' <a href="forgot_password.php">'.get_string('newpassword').'?</a>';
 154          }
 155          if (empty($data['email2'])) {
 156              $errors['email2'] = get_string('missingemail');
 157  
 158          } else if ($data['email2'] != $data['email']) {
 159              $errors['email2'] = get_string('invalidemail');
 160          }
 161          if (!isset($errors['email'])) {
 162              if ($err = email_is_not_allowed($data['email'])) {
 163                  $errors['email'] = $err;
 164              }
 165  
 166          }
 167  
 168          $errmsg = '';
 169          if (!check_password_policy($data['password'], $errmsg)) {
 170              $errors['password'] = $errmsg;
 171          }
 172  
 173          if ($this->signup_captcha_enabled()) {
 174              $recaptcha_element = $this->_form->getElement('recaptcha_element');
 175              if (!empty($this->_form->_submitValues['recaptcha_challenge_field'])) {
 176                  $challenge_field = $this->_form->_submitValues['recaptcha_challenge_field'];
 177                  $response_field = $this->_form->_submitValues['recaptcha_response_field'];
 178                  if (true !== ($result = $recaptcha_element->verify($challenge_field, $response_field))) {
 179                      $errors['recaptcha'] = $result;
 180                  }
 181              } else {
 182                  $errors['recaptcha'] = get_string('missingrecaptchachallengefield');
 183              }
 184          }
 185          // Validate customisable profile fields. (profile_validation expects an object as the parameter with userid set)
 186          $dataobject = (object)$data;
 187          $dataobject->id = 0;
 188          $errors += profile_validation($dataobject, $files);
 189  
 190          return $errors;
 191  
 192      }
 193  
 194      /**
 195       * Returns whether or not the captcha element is enabled, and the admin settings fulfil its requirements.
 196       * @return bool
 197       */
 198      function signup_captcha_enabled() {
 199          global $CFG;
 200          $authplugin = get_auth_plugin($CFG->registerauth);
 201          return !empty($CFG->recaptchapublickey) && !empty($CFG->recaptchaprivatekey) && $authplugin->is_captcha_enabled();
 202      }
 203  
 204  }