PHP Pieform::get_error方法代码示例

function forgotpass_validate(Pieform $form, $values)
{
    // See if the user input an email address or a username. We favour email addresses
    if (!$form->get_error('emailusername')) {
        // Check if the user who associates to username or email address is using the external authentication
        if (record_exists_sql('SELECT u.authinstance
            FROM {usr} u INNER JOIN {auth_instance} ai ON (u.authinstance = ai.id)
            WHERE (LOWER(u.email) = ? OR LOWER(u.username) = ?)
            AND ((ai.authname != \'internal\') AND (ai.authname != \'none\'))', array_fill(0, 2, strtolower($values['emailusername'])))) {
            $form->set_error('emailusername', get_string('forgotpassuserusingexternalauthentication', 'mahara', get_config('wwwroot') . 'contact.php'));
        } else {
            if (!($authinstance = get_field_sql('SELECT u.authinstance
                FROM {usr} u INNER JOIN {auth_instance} ai ON (u.authinstance = ai.id)
                WHERE (LOWER(u.email) = ? OR LOWER(u.username) = ?)
                AND ai.authname = \'internal\'', array_fill(0, 2, strtolower($values['emailusername']))))) {
                $form->set_error('emailusername', get_string('forgotpassnosuchemailaddressorusername'));
            }
        }
    }
    if ($form->get_error('emailusername')) {
        return;
    }
    $authobj = AuthFactory::create($authinstance);
    if (!method_exists($authobj, 'change_password')) {
        die_info(get_string('cantchangepassword'));
    }
}

function forgotpass_validate(Pieform $form, $values)
{
    // See if the user input an email address or a username. We favour email addresses
    if (!$form->get_error('emailusername')) {
        if (!($authinstance = get_field_sql('SELECT authinstance FROM {usr} WHERE LOWER(email) = ?', array(strtolower($values['emailusername']))))) {
            if (!($authinstance = get_field_sql('SELECT authinstance FROM {usr} WHERE LOWER(username) = ?', array(strtolower($values['emailusername']))))) {
                $form->set_error('emailusername', get_string('forgotpassnosuchemailaddressorusername'));
            }
        }
    }
    if ($form->get_error('emailusername')) {
        return;
    }
    $authobj = AuthFactory::create($authinstance);
    if (!method_exists($authobj, 'change_password')) {
        die_info(get_string('cantchangepassword'));
    }
}

/**
 * @todo add note: because the form select thing will eventually enforce
 * that the result for $values['institution'] was in the original lot,
 * and because that only allows authmethods that use 'internal' auth, we
 * can guarantee that the auth method is internal
 */
function auth_register_validate(Pieform $form, $values)
{
    global $SESSION;
    $registerterms = get_config('registerterms');
    $spamtrap = new_spam_trap(array(array('type' => 'name', 'value' => $values['firstname']), array('type' => 'name', 'value' => $values['lastname']), array('type' => 'email', 'value' => $values['email'])));
    if ($form->spam_error() || $spamtrap->is_spam()) {
        $msg = get_string('formerror');
        $emailcontact = get_config('emailcontact');
        if (!empty($emailcontact)) {
            $msg .= ' ' . get_string('formerroremail', 'mahara', $emailcontact, $emailcontact);
        }
        $form->set_error(null, $msg);
        return;
    }
    $institution = $values['institution'];
    safe_require('auth', 'internal');
    // First name and last name must contain at least one non whitespace
    // character, so that there's something to read
    if (!$form->get_error('firstname') && !preg_match('/\\S/', $values['firstname'])) {
        $form->set_error('firstname', $form->i18n('required'));
    }
    if (!$form->get_error('lastname') && !preg_match('/\\S/', $values['lastname'])) {
        $form->set_error('lastname', $form->i18n('required'));
    }
    // The e-mail address cannot already be in the system
    if (!$form->get_error('email') && (record_exists('usr', 'email', $values['email']) || record_exists('artefact_internal_profile_email', 'email', $values['email']))) {
        $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
    }
    // If the user hasn't agreed to the terms and conditions, don't bother
    if ($registerterms && $values['tandc'] != 'yes') {
        $form->set_error('tandc', get_string('youmaynotregisterwithouttandc', 'auth.internal'), false);
    }
    $institution = get_record_sql('
        SELECT
            i.name, i.maxuseraccounts, i.registerallowed, COUNT(u.id) AS count
        FROM {institution} i
            LEFT OUTER JOIN {usr_institution} ui ON ui.institution = i.name
            LEFT OUTER JOIN {usr} u ON (ui.usr = u.id AND u.deleted = 0)
        WHERE
            i.name = ?
        GROUP BY
            i.name, i.maxuseraccounts, i.registerallowed', array($institution));
    if (!empty($institution->maxuseraccounts) && $institution->count >= $institution->maxuseraccounts) {
        // the institution is full so we need to alert the admins of the institution to this fact so
        // they can either increase the maxusers or turn off the public registration.
        require_once get_config('docroot') . 'lib/institution.php';
        $institutionobj = new Institution($institution->name);
        $institutionobj->send_admin_institution_is_full_message();
        $form->set_error('institution', get_string('institutionfull'));
    }
    if (!$institution || !$institution->registerallowed) {
        $form->set_error('institution', get_string('registrationnotallowed'));
    }
}

function adduser_validate(Pieform $form, $values)
{
    global $USER, $TRANSPORTER;
    $authobj = AuthFactory::create($values['authinstance']);
    $institution = $authobj->institution;
    // Institutional admins can only set their own institutions' authinstances
    if (!$USER->get('admin') && !$USER->is_institutional_admin($authobj->institution)) {
        $form->set_error('authinstance', get_string('notadminforinstitution', 'admin'));
        return;
    }
    $institution = new Institution($authobj->institution);
    // Don't exceed max user accounts for the institution
    if ($institution->isFull()) {
        $institution->send_admin_institution_is_full_message();
        $form->set_error('authinstance', get_string('institutionmaxusersexceeded', 'admin'));
        return;
    }
    $username = $values['username'];
    $firstname = sanitize_firstname($values['firstname']);
    $lastname = sanitize_lastname($values['lastname']);
    $email = sanitize_email($values['email']);
    $password = $values['password'];
    if ($USER->get('admin') || get_config_plugin('artefact', 'file', 'institutionaloverride')) {
        $maxquotaenabled = get_config_plugin('artefact', 'file', 'maxquotaenabled');
        $maxquota = get_config_plugin('artefact', 'file', 'maxquota');
        if ($maxquotaenabled && $values['quota'] > $maxquota) {
            $form->set_error('quota', get_string('maxquotaexceededform', 'artefact.file', display_size($maxquota)));
        }
    }
    if (method_exists($authobj, 'is_username_valid_admin')) {
        if (!$authobj->is_username_valid_admin($username)) {
            $form->set_error('username', get_string('usernameinvalidadminform', 'auth.internal'));
        }
    } else {
        if (method_exists($authobj, 'is_username_valid')) {
            if (!$authobj->is_username_valid($username)) {
                $form->set_error('username', get_string('usernameinvalidform', 'auth.internal'));
            }
        }
    }
    if (!$form->get_error('username') && record_exists_select('usr', 'LOWER(username) = ?', array(strtolower($username)))) {
        $form->set_error('username', get_string('usernamealreadytaken', 'auth.internal'));
    }
    if (method_exists($authobj, 'is_password_valid') && !$authobj->is_password_valid($password)) {
        $form->set_error('password', get_string('passwordinvalidform', 'auth.' . $authobj->type));
    }
    if (isset($_POST['createmethod']) && $_POST['createmethod'] == 'leap2a') {
        $form->set_error('firstname', null);
        $form->set_error('lastname', null);
        $form->set_error('email', null);
        if (!$values['leap2afile'] && ($_FILES['leap2afile']['error'] == UPLOAD_ERR_INI_SIZE || $_FILES['leap2afile']['error'] == UPLOAD_ERR_FORM_SIZE)) {
            $form->reply(PIEFORM_ERR, array('message' => get_string('uploadedfiletoobig'), 'goto' => '/admin/users/add.php'));
            $form->set_error('leap2afile', get_string('uploadedfiletoobig'));
            return;
        } else {
            if (!$values['leap2afile']) {
                $form->set_error('leap2afile', $form->i18n('rule', 'required', 'required'));
                return;
            }
        }
        if ($values['leap2afile']['type'] == 'application/octet-stream') {
            require_once 'file.php';
            $mimetype = file_mime_type($values['leap2afile']['tmp_name']);
        } else {
            $mimetype = trim($values['leap2afile']['type'], '"');
        }
        $date = time();
        $niceuser = preg_replace('/[^a-zA-Z0-9_-]/', '-', $values['username']);
        safe_require('import', 'leap');
        $fakeimportrecord = (object) array('data' => array('importfile' => $values['leap2afile']['tmp_name'], 'importfilename' => $values['leap2afile']['name'], 'importid' => $niceuser . '-' . $date, 'mimetype' => $mimetype));
        $TRANSPORTER = new LocalImporterTransport($fakeimportrecord);
        try {
            $TRANSPORTER->extract_file();
            PluginImportLeap::validate_transported_data($TRANSPORTER);
        } catch (Exception $e) {
            $form->set_error('leap2afile', $e->getMessage());
        }
    } else {
        if (!$form->get_error('firstname') && empty($firstname)) {
            $form->set_error('firstname', $form->i18n('rule', 'required', 'required'));
        }
        if (!$form->get_error('lastname') && empty($lastname)) {
            $form->set_error('lastname', $form->i18n('rule', 'required', 'required'));
        }
        if (!$form->get_error('email')) {
            if (!$form->get_error('email') && empty($email)) {
                $form->set_error('email', get_string('invalidemailaddress', 'artefact.internal'));
            }
            if (record_exists('usr', 'email', $email) || record_exists('artefact_internal_profile_email', 'email', $email)) {
                $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
            }
        }
    }
}

function edituser_site_validate(Pieform $form, $values)
{
    global $USER, $SESSION;
    if (!($user = get_record('usr', 'id', $values['id']))) {
        return false;
    }
    if ($USER->get('admin') || get_config_plugin('artefact', 'file', 'institutionaloverride')) {
        $maxquotaenabled = get_config_plugin('artefact', 'file', 'maxquotaenabled');
        $maxquota = get_config_plugin('artefact', 'file', 'maxquota');
        if ($maxquotaenabled && $values['quota'] > $maxquota) {
            $form->set_error('quota', get_string('maxquotaexceededform', 'artefact.file', display_size($maxquota)));
            $SESSION->add_error_msg(get_string('maxquotaexceeded', 'artefact.file', display_size($maxquota)));
        }
    }
    $userobj = new User();
    $userobj = $userobj->find_by_id($user->id);
    if (isset($values['username']) && !empty($values['username']) && $values['username'] != $userobj->username) {
        if (!isset($values['authinstance'])) {
            $authobj = AuthFactory::create($userobj->authinstance);
        } else {
            $authobj = AuthFactory::create($values['authinstance']);
        }
        if (method_exists($authobj, 'change_username')) {
            if (method_exists($authobj, 'is_username_valid_admin')) {
                if (!$authobj->is_username_valid_admin($values['username'])) {
                    $form->set_error('username', get_string('usernameinvalidadminform', 'auth.internal'));
                }
            } else {
                if (method_exists($authobj, 'is_username_valid')) {
                    if (!$authobj->is_username_valid($values['username'])) {
                        $form->set_error('username', get_string('usernameinvalidform', 'auth.internal'));
                    }
                }
            }
            if (!$form->get_error('username') && record_exists_select('usr', 'LOWER(username) = ?', strtolower($values['username']))) {
                $form->set_error('username', get_string('usernamealreadytaken', 'auth.internal'));
            }
        } else {
            $form->set_error('username', get_string('usernamechangenotallowed', 'admin'));
        }
    }
    // OVERWRITE 3: insert
    if (isset($values['email']) && !empty($values['email']) && $values['email'] != $userobj->email) {
        $email = sanitize_email($values['email']);
        if ($email == '') {
            $form->set_error('email', get_string('invalidemailaddress', 'artefact.internal'));
        } else {
            $values['email'] = $email;
        }
        if (GcrInstitutionTable::isEmailAddressUsed($email)) {
            $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
        }
    }
    // END OVERWITE 3
    // Check that the external username isn't already in use by someone else
    if (isset($values['authinstance']) && isset($values['remoteusername'])) {
        // there are 4 cases for changes on the page
        // 1) ai and remoteuser have changed
        // 2) just ai has changed
        // 3) just remoteuser has changed
        // 4) the ai changes and the remoteuser is wiped - this is a delete of the old ai-remoteuser
        // determine the current remoteuser
        $current_remotename = get_field('auth_remote_user', 'remoteusername', 'authinstance', $user->authinstance, 'localusr', $user->id);
        if (!$current_remotename) {
            $current_remotename = $user->username;
        }
        // what should the new remoteuser be
        $new_remoteuser = get_field('auth_remote_user', 'remoteusername', 'authinstance', $values['authinstance'], 'localusr', $user->id);
        if (!$new_remoteuser) {
            $new_remoteuser = $user->username;
        }
        if (strlen(trim($values['remoteusername'])) > 0) {
            // value changed on page - use it
            if ($values['remoteusername'] != $current_remotename) {
                $new_remoteuser = $values['remoteusername'];
            }
        }
        // what really counts is who owns the target remoteuser slot
        $target_owner = get_field('auth_remote_user', 'localusr', 'authinstance', $values['authinstance'], 'remoteusername', $new_remoteuser);
        // target remoteuser is owned by someone else
        if ($target_owner && $target_owner != $user->id) {
            $usedbyuser = get_field('usr', 'username', 'id', $target_owner);
            $SESSION->add_error_msg(get_string('duplicateremoteusername', 'auth', $usedbyuser));
            $form->set_error('remoteusername', get_string('duplicateremoteusernameformerror', 'auth'));
        }
    }
}

 public static function instance_config_validate(Pieform $form, $values)
 {
     if (strpos($values['url'], '://') == false) {
         // try add on http://
         $values['url'] = 'http://' . $values['url'];
     } else {
         $proto = substr($values['url'], 0, strpos($values['url'], '://'));
         if (!in_array($proto, array('http', 'https'))) {
             $form->set_error('url', get_string('invalidurl', 'blocktype.externalfeed'));
         }
     }
     if (!$form->get_error('url') && !record_exists('blocktype_externalfeed_data', 'url', $values['url'])) {
         try {
             self::parse_feed($values['url']);
             return;
         } catch (XML_Feed_Parser_Exception $e) {
             $form->set_error('url', get_string('invalidfeed', 'blocktype.externalfeed', $e->getMessage()));
         }
     }
 }

 public static function instance_config_validate(Pieform $form, $values)
 {
     if (strpos($values['url'], '://') == false) {
         // try add on http://
         $values['url'] = 'http://' . $values['url'];
     } else {
         $proto = substr($values['url'], 0, strpos($values['url'], '://'));
         if (!in_array($proto, array('http', 'https'))) {
             $form->set_error('url', get_string('invalidurl', 'blocktype.externalfeed'), false);
         }
     }
     // If you're changing the URL on an authenticated feed, force them to re-enter the password
     if (!empty($values['blockconfig'])) {
         $instance = new BlockInstance($values['blockconfig']);
         $configdata = $instance->get('configdata');
         if (!empty($configdata['feedid'])) {
             $olddata = $instance->get_data('feed', $configdata['feedid']);
             if ($olddata) {
                 if ($values['url'] != $olddata->url && $olddata->authpassword != '' && $values['authpassword']['submittedvalue'] === null) {
                     $form->set_error('authpassword', get_string('reenterpassword', 'blocktype.externalfeed'), false);
                     return;
                 }
             }
         }
     }
     if (!$form->get_error('url')) {
         try {
             $authpassword = $values['authpassword']['submittedvalue'] !== null ? $values['authpassword']['submittedvalue'] : $values['authpassword']['defaultvalue'];
             self::parse_feed($values['url'], $values['insecuresslmode'], $values['authuser'], $authpassword);
             return;
         } catch (XML_Feed_Parser_Exception $e) {
             $form->set_error('url', get_string('invalidfeed', 'blocktype.externalfeed', hsc($e->getMessage())), false);
         }
     }
 }

function institution_validate(Pieform $form, $values)
{
    if (!empty($values['name']) && !$form->get_error('name') && record_exists('institution', 'name', $values['name'])) {
        $form->set_error('name', get_string('institutionnamealreadytaken', 'admin'));
    }
}

function institution_validate(Pieform $form, $values)
{
    global $USER;
    if (!empty($values['name']) && !$form->get_error('name') && record_exists('institution', 'name', $values['name'])) {
        $form->set_error('name', get_string('institutionnamealreadytaken', 'admin'));
    }
    if ($USER->get('admin') || get_config_plugin('artefact', 'file', 'institutionaloverride')) {
        if (get_config_plugin('artefact', 'file', 'maxquotaenabled') && get_config_plugin('artefact', 'file', 'maxquota') < $values['defaultquota']) {
            $form->set_error('defaultquota', get_string('maxquotatoolow', 'artefact.file'));
        }
    }
    if (get_config('licensemetadata') && !empty($values['licensemandatory']) && (isset($values['licensedefault']) && $values['licensedefault'] == '')) {
        $form->set_error('licensedefault', get_string('licensedefaultmandatory', 'admin'));
    }
    // Check uploaded logo
    if (!empty($values['logo'])) {
        require_once 'file.php';
        require_once 'uploadmanager.php';
        $um = new upload_manager('logo');
        if ($error = $um->preprocess_file()) {
            $form->set_error('logo', $error);
            return false;
        }
        $imageinfo = getimagesize($values['logo']['tmp_name']);
        if (!$imageinfo || !is_image_type($imageinfo[2])) {
            $form->set_error('logo', get_string('filenotimage'));
            return false;
        }
        // Check the file isn't greater than the max allowable size
        $width = $imageinfo[0];
        $height = $imageinfo[1];
        $imagemaxwidth = get_config('imagemaxwidth');
        $imagemaxheight = get_config('imagemaxheight');
        if ($width > $imagemaxwidth || $height > $imagemaxheight) {
            $form->set_error('logo', get_string('profileiconimagetoobig', 'artefact.file', $width, $height, $imagemaxwidth, $imagemaxheight));
        }
    }
    if (!empty($values['lang']) && $values['lang'] != 'sitedefault' && !array_key_exists($values['lang'], get_languages())) {
        $form->set_error('lang', get_string('institutionlanginvalid', 'admin'));
    }
    // Validate plugins settings.
    plugin_institution_prefs_validate($form, $values);
}

function course_create_validate(Pieform $form, $values)
{
    if ($form->get_error('fullname')) {
        $form->set_error('fullname', get_string('errorfullname', 'artefact.courses'));
    }
    if ($form->get_error('shortname')) {
        $form->set_error('shortname', get_string('errorshortname', 'artefact.courses'));
    }
}

function adduser_validate(Pieform $form, $values)
{
    global $USER;
    $authobj = AuthFactory::create($values['authinstance']);
    $institution = $authobj->institution;
    // Institutional admins can only set their own institutions' authinstances
    if (!$USER->get('admin') && !$USER->is_institutional_admin($authobj->institution)) {
        $form->set_error('authinstance', get_string('notadminforinstitution', 'admin'));
        return;
    }
    $institution = new Institution($authobj->institution);
    // Don't exceed max user accounts for the institution
    if ($institution->isFull()) {
        $SESSION->add_error_msg(get_string('institutionmaxusersexceeded', 'admin'));
        redirect('/admin/users/add.php');
    }
    $username = $values['username'];
    $firstname = $values['firstname'];
    $lastname = $values['lastname'];
    $email = $values['email'];
    $password = $values['password'];
    if (method_exists($authobj, 'is_username_valid') && !$authobj->is_username_valid($username)) {
        $form->set_error('username', get_string('addusererrorinvalidusername', 'admin'));
        return;
    }
    if (!$form->get_error('username') && record_exists_select('usr', 'LOWER(username) = ?', strtolower($username))) {
        $form->set_error('username', get_string('usernamealreadytaken', 'auth.internal'));
        return;
    }
    if (!$form->get_error('firstname') && !preg_match('/\\S/', $firstname)) {
        $form->set_error('firstname', $form->i18n('required'));
    }
    if (!$form->get_error('lastname') && !preg_match('/\\S/', $lastname)) {
        $form->set_error('lastname', $form->i18n('required'));
    }
    if (record_exists('usr', 'email', $email) || record_exists('artefact_internal_profile_email', 'email', $email)) {
        $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
    }
    if (method_exists($authobj, 'is_password_valid') && !$authobj->is_password_valid($password)) {
        $form->set_error('password', get_string('passwordinvalidform', 'auth.' . $authobj->type));
        return;
    }
}

/**
 * Given a form, an array of values with 'password1' and 'password2'
 * indices and a user, validate that the user can change their password to
 * the one in $values.
 *
 * This provides one place where validation of passwords can be done. This is
 * used by:
 *  - registration
 *  - user forgot password
 *  - user changing password on their account page
 *  - user forced to change their password by the <kbd>passwordchange</kbd>
 *    flag on the <kbd>usr</kbd> table.
 *
 * The password is checked for:
 *  - Being in valid form according to the rules of the authentication method
 *    for the user
 *  - Not being an easy password (a blacklist of strings, NOT a length check or
 *     similar), including being the user's username
 *  - Both values being equal
 *
 * @param Pieform $form         The form to validate
 * @param array $values         The values passed through
 * @param string $authplugin    The authentication plugin that the user uses
 */
function password_validate(Pieform $form, $values, $user)
{
    $authobj = AuthFactory::create($user->authinstance);
    if (!$form->get_error('password1') && !$authobj->is_password_valid($values['password1'])) {
        $form->set_error('password1', get_string('passwordinvalidform', "auth.{$authobj->type}"));
    }
    $suckypasswords = array('mahara', 'password', $user->username, 'abc123');
    if (!$form->get_error('password1') && in_array($values['password1'], $suckypasswords)) {
        $form->set_error('password1', get_string('passwordtooeasy'));
    }
    if (!$form->get_error('password1') && $values['password1'] != $values['password2']) {
        $form->set_error('password2', get_string('passwordsdonotmatch'));
    }
}

function adduser_validate(Pieform $form, $values)
{
    global $USER, $TRANSPORTER;
    $authobj = AuthFactory::create($values['authinstance']);
    $institution = $authobj->institution;
    // Institutional admins can only set their own institutions' authinstances
    if (!$USER->get('admin') && !$USER->is_institutional_admin($authobj->institution)) {
        $form->set_error('authinstance', get_string('notadminforinstitution', 'admin'));
        return;
    }
    $institution = new Institution($authobj->institution);
    // Don't exceed max user accounts for the institution
    if ($institution->isFull()) {
        $form->set_error('authinstance', get_string('institutionmaxusersexceeded', 'admin'));
        return;
    }
    $username = $values['username'];
    $firstname = $values['firstname'];
    $lastname = $values['lastname'];
    $email = $values['email'];
    $password = $values['password'];
    if (method_exists($authobj, 'is_username_valid') && !$authobj->is_username_valid($username)) {
        $form->set_error('username', get_string('usernameinvalidform', 'auth.internal'));
    }
    if (!$form->get_error('username') && record_exists_select('usr', 'LOWER(username) = ?', strtolower($username))) {
        $form->set_error('username', get_string('usernamealreadytaken', 'auth.internal'));
    }
    if (method_exists($authobj, 'is_password_valid') && !$authobj->is_password_valid($password)) {
        $form->set_error('password', get_string('passwordinvalidform', 'auth.' . $authobj->type));
    }
    if (isset($_POST['createmethod']) && $_POST['createmethod'] == 'leap2a') {
        $form->set_error('firstname', null);
        $form->set_error('lastname', null);
        $form->set_error('email', null);
        if (!$values['leap2afile']) {
            $form->set_error('leap2afile', $form->i18n('rule', 'required', 'required'));
            return;
        }
        if ($values['leap2afile']['type'] == 'application/octet-stream') {
            require_once 'file.php';
            $mimetype = file_mime_type($values['leap2afile']['tmp_name']);
        } else {
            $mimetype = $values['leap2afile']['type'];
        }
        $date = time();
        $niceuser = preg_replace('/[^a-zA-Z0-9_-]/', '-', $values['username']);
        safe_require('import', 'leap');
        $fakeimportrecord = (object) array('data' => array('importfile' => $values['leap2afile']['tmp_name'], 'importfilename' => $values['leap2afile']['name'], 'importid' => $niceuser . '-' . $date, 'mimetype' => $mimetype));
        $TRANSPORTER = new LocalImporterTransport($fakeimportrecord);
        try {
            $TRANSPORTER->extract_file();
            PluginImportLeap::validate_transported_data($TRANSPORTER);
        } catch (Exception $e) {
            $form->set_error('leap2afile', $e->getMessage());
        }
    } else {
        if (!$form->get_error('firstname') && !preg_match('/\\S/', $firstname)) {
            $form->set_error('firstname', $form->i18n('rule', 'required', 'required'));
        }
        if (!$form->get_error('lastname') && !preg_match('/\\S/', $lastname)) {
            $form->set_error('lastname', $form->i18n('rule', 'required', 'required'));
        }
        if (!$form->get_error('email')) {
            require_once 'phpmailer/class.phpmailer.php';
            if (!$form->get_error('email') && !PHPMailer::ValidateAddress($email)) {
                $form->set_error('email', get_string('invalidemailaddress', 'artefact.internal'));
            }
            if (record_exists('usr', 'email', $email) || record_exists('artefact_internal_profile_email', 'email', $email)) {
                $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
            }
        }
    }
}

/**
 * @todo add note: because the form select thing will eventually enforce
 * that the result for $values['institution'] was in the original lot,
 * and because that only allows authmethods that use 'internal' auth, we
 * can guarantee that the auth method is internal
 */
function register_validate(Pieform $form, $values)
{
    global $SESSION;
    $institution = $values['institution'];
    safe_require('auth', 'internal');
    if (!$form->get_error('username') && !AuthInternal::is_username_valid($values['username'])) {
        $form->set_error('username', get_string('usernameinvalidform', 'auth.internal'));
    }
    if (!$form->get_error('username') && record_exists_select('usr', 'LOWER(username) = ?', strtolower($values['username']))) {
        $form->set_error('username', get_string('usernamealreadytaken', 'auth.internal'));
    }
    $user = (object) $values;
    $user->authinstance = get_field('auth_instance', 'id', 'authname', 'internal', 'institution', $institution);
    password_validate($form, $values, $user);
    // First name and last name must contain at least one non whitespace
    // character, so that there's something to read
    if (!$form->get_error('firstname') && !preg_match('/\\S/', $values['firstname'])) {
        $form->set_error('firstname', $form->i18n('required'));
    }
    if (!$form->get_error('lastname') && !preg_match('/\\S/', $values['lastname'])) {
        $form->set_error('lastname', $form->i18n('required'));
    }
    // The e-mail address cannot already be in the system
    if (!$form->get_error('email') && (record_exists('usr', 'email', $values['email']) || record_exists('artefact_internal_profile_email', 'email', $values['email']))) {
        $form->set_error('email', get_string('emailalreadytaken', 'auth.internal'));
    }
    // If the user hasn't agreed to the terms and conditions, don't bother
    if ($values['tandc'] != 'yes') {
        $form->set_error('tandc', get_string('youmaynotregisterwithouttandc', 'auth.internal'));
    }
    // CAPTCHA image
    $captcharequired = get_config('captcha_on_register_form');
    if ((is_null($captcharequired) || $captcharequired) && !$values['captcha']) {
        $form->set_error('captcha', get_string('captchaincorrect'));
    }
    $institution = get_record_sql('
        SELECT 
            i.name, i.maxuseraccounts, i.registerallowed, COUNT(u.id)
        FROM {institution} i
            LEFT OUTER JOIN {usr_institution} ui ON ui.institution = i.name
            LEFT OUTER JOIN {usr} u ON (ui.usr = u.id AND u.deleted = 0)
        WHERE
            i.name = ?
        GROUP BY
            i.name, i.maxuseraccounts, i.registerallowed', array($institution));
    if (!empty($institution->maxuseraccounts) && $institution->count >= $institution->maxuseraccounts) {
        $form->set_error('institution', get_string('institutionfull'));
    }
    if (!$institution->registerallowed) {
        $form->set_error('institution', get_string('registrationnotallowed'));
    }
}