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<?php
/**
* Privacy.php - Privacy policy of Stud.IP
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* @author Timo Hartge <hartge@data-quest.de>
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
*/
class Privacy
{
/**
* Names of classes containing user data.
*/
private static $privacy_classes = [
'core' => [
'User',
'DataField',
'DatafieldEntryModel',
'UserConfig',
'HelpTourUser',
'Grading\Instance',
'LogEvent',
],
'date' => [
'CalendarEvent',
'EventData',
'CourseDate',
'CourseExDate',
],
'message' => [
'BlubberThread',
'BlubberComment',
'StudipNews',
'StudipComment',
'Message',
'MessageUser',
],
'content' => [
'FileRef',
'ForumEntry',
'WikiPage',
'Courseware\Unit',
'Courseware\StructuralElement',
'Courserware\StructuralElementComment',
'Courserware\StructuralElementFeedback',
'Courseware\TaskGroup',
'Courseware\TaskFeedback',
'Courseware\Bookmark',
'Courseware\Container',
'Courseware\Block',
'Courserware\BlockComment',
'Courserware\BlockFeedback',
'Courseware\UserDataField',
'Courseware\UserProgress'
],
'quest' => [
'Evaluation',
'Questionnaire',
'QuestionnaireAnswer',
'QuestionnaireAnonymousAnswer',
'QuestionnaireAssignment',
'eTask\Attempt',
'eTask\Response',
'eTask\Task',
'eTask\Test',
],
'membership' => [
'Course',
'CourseMember',
'AdmissionApplication',
'ArchivedCourse',
'ArchivedCourseMember',
'Statusgruppen',
'StatusgruppeUser',
'InstituteMember',
'UserStudyCourse',
'Fach',
'Abschluss',
],
'plugins' => [
],
];
/**
* Returns the tables containing user data.
* the array consists of the tables containing user data
* the expected format for each table is:
* $array[ table display name ] = [ 'table_name' => name of the table, 'table_content' => array of db rows containing userdata]
*
* @param string $user_id
* @param string $section
* @return array
*/
public static function getUserdataInformation($user_id, $section = null)
{
$storage = new StoredUserData($user_id);
if ($section && !isset(self::$privacy_classes[$section])) {
throw new Exception("Invalid privacy section '{$section}'");
}
$privacy_classes = $section
? self::$privacy_classes[$section]
: array_flatten(array_values(self::$privacy_classes));
foreach ($privacy_classes as $privacy_class) {
if (is_a($privacy_class, 'PrivacyObject', true)) {
$privacy_class::exportUserData($storage);
}
}
if (!$section || $section === 'plugins') {
foreach (PluginEngine::getPlugins('PrivacyPlugin') as $plugin) {
$plugin->exportUserData($storage);
}
}
$user_data = [];
foreach ($storage->getTabularData() as $meta) {
$user_data[$meta['name']] = [
'table_name' => $meta['key'],
'table_content' => $meta['value'],
];
}
return $user_data;
}
/**
* Checks if current user is privileged to see the data of given user
*
* @param string $user_id
* @return boolean
*/
public static function isVisible($user_id)
{
$needed_perm = Config::get()->PRIVACY_PERM ?: 'root';
$allowed_person = true;
if (!in_array($needed_perm, ['root', 'admin']) && !$GLOBALS['perm']->have_perm('admin')) {
$allowed_person = $GLOBALS['user']->user_id === $user_id;
}
return $GLOBALS['perm']->have_perm($needed_perm)
&& $allowed_person;
}
}
|
