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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Privacy Subsystem implementation for repository_onedrive.
*
* @package repository_onedrive
* @copyright 2018 Zig Tan <zig@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace repository_onedrive\privacy;
use core_privacy\local\metadata\collection;
use core_privacy\local\request\approved_contextlist;
use core_privacy\local\request\approved_userlist;
use core_privacy\local\request\context;
use core_privacy\local\request\contextlist;
use core_privacy\local\request\transform;
use core_privacy\local\request\userlist;
use \core_privacy\local\request\writer;
defined('MOODLE_INTERNAL') || die();
/**
* Privacy Subsystem for repository_onedrive implementing metadata and plugin providers.
*
* @copyright 2018 Zig Tan <zig@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class provider implements
\core_privacy\local\metadata\provider,
\core_privacy\local\request\core_userlist_provider,
\core_privacy\local\request\plugin\provider {
/**
* Returns meta data about this system.
*
* @param collection $collection The initialised collection to add items to.
* @return collection A listing of user data stored through this system.
*/
public static function get_metadata(collection $collection) : collection {
$collection->add_external_location_link(
'onedrive.live.com',
[
'searchtext' => 'privacy:metadata:repository_onedrive:searchtext'
],
'privacy:metadata:repository_onedrive'
);
// The repository_onedrive has a 'repository_onedrive_access' table that contains user data.
$collection->add_database_table(
'repository_onedrive_access',
[
'itemid' => 'privacy:metadata:repository_onedrive:repository_onedrive_access:itemid',
'permissionid' => 'privacy:metadata:repository_onedrive:repository_onedrive_access:permissionid',
'timecreated' => 'privacy:metadata:repository_onedrive:repository_onedrive_access:timecreated',
'timemodified' => 'privacy:metadata:repository_onedrive:repository_onedrive_access:timemodified',
'usermodified' => 'privacy:metadata:repository_onedrive:repository_onedrive_access:usermodified'
],
'privacy:metadata:repository_onedrive'
);
return $collection;
}
/**
* Get the list of contexts that contain user information for the specified user.
*
* @param int $userid The user to search.
* @return contextlist $contextlist The contextlist containing the list of contexts used in this plugin.
*/
public static function get_contexts_for_userid(int $userid) : contextlist {
$contextlist = new contextlist();
// The data is associated at the user context level, so retrieve the user's context id.
$sql = "SELECT c.id
FROM {repository_onedrive_access} roa
JOIN {context} c ON c.instanceid = roa.usermodified AND c.contextlevel = :contextuser
WHERE roa.usermodified = :userid
GROUP BY c.id";
$params = [
'contextuser' => CONTEXT_USER,
'userid' => $userid
];
$contextlist->add_from_sql($sql, $params);
return $contextlist;
}
/**
* Get the list of users who have data within a context.
*
* @param userlist $userlist The userlist containing the list of users who have data in this context/plugin combination.
*/
public static function get_users_in_context(userlist $userlist) {
$context = $userlist->get_context();
if (!$context instanceof \context_user) {
return;
}
// The data is associated at the user context level, so retrieve the user's context id.
$sql = "SELECT usermodified AS userid
FROM {repository_onedrive_access}
WHERE usermodified = ?";
$params = [$context->instanceid];
$userlist->add_from_sql('userid', $sql, $params);
}
/**
* Export all user data for the specified user, in the specified contexts.
*
* @param approved_contextlist $contextlist The approved contexts to export information for.
*/
public static function export_user_data(approved_contextlist $contextlist) {
global $DB;
// If the user has data, then only the User context should be present so get the first context.
$contexts = $contextlist->get_contexts();
if (count($contexts) == 0) {
return;
}
$context = reset($contexts);
// Sanity check that context is at the User context level, then get the userid.
if ($context->contextlevel !== CONTEXT_USER) {
return;
}
$userid = $context->instanceid;
$sql = "SELECT roa.id as id,
roa.itemid as itemid,
roa.permissionid as permissionid,
roa.timecreated as timecreated,
roa.timemodified as timemodified
FROM {repository_onedrive_access} roa
WHERE roa.usermodified = :userid";
$params = [
'userid' => $userid
];
$onedriveaccesses = $DB->get_records_sql($sql, $params);
$index = 0;
foreach ($onedriveaccesses as $onedriveaccess) {
// Data export is organised in: {User Context}/Repository plug-ins/{Plugin Name}/Access/{index}/data.json.
$index++;
$subcontext = [
get_string('plugin', 'core_repository'),
get_string('pluginname', 'repository_onedrive'),
get_string('access', 'repository_onedrive'),
$index
];
$data = (object) [
'itemid' => $onedriveaccess->itemid,
'permissionid' => $onedriveaccess->permissionid,
'timecreated' => transform::datetime($onedriveaccess->timecreated),
'timemodified' => transform::datetime($onedriveaccess->timemodified)
];
writer::with_context($context)->export_data($subcontext, $data);
}
}
/**
* Delete all data for all users in the specified context.
*
* @param context $context The specific context to delete data for.
*/
public static function delete_data_for_all_users_in_context(\context $context) {
global $DB;
// Sanity check that context is at the User context level, then get the userid.
if ($context->contextlevel !== CONTEXT_USER) {
return;
}
$userid = $context->instanceid;
$DB->delete_records('repository_onedrive_access', ['usermodified' => $userid]);
}
/**
* Delete all user data for the specified user, in the specified contexts.
*
* @param approved_contextlist $contextlist The approved contexts and user information to delete information for.
*/
public static function delete_data_for_user(approved_contextlist $contextlist) {
global $DB;
// If the user has data, then only the User context should be present so get the first context.
$contexts = $contextlist->get_contexts();
if (count($contexts) == 0) {
return;
}
$context = reset($contexts);
// Sanity check that context is at the User context level, then get the userid.
if ($context->contextlevel !== CONTEXT_USER) {
return;
}
$userid = $context->instanceid;
$DB->delete_records('repository_onedrive_access', ['usermodified' => $userid]);
}
/**
* Delete multiple users within a single context.
*
* @param approved_userlist $userlist The approved context and user information to delete information for.
*/
public static function delete_data_for_users(approved_userlist $userlist) {
global $DB;
$context = $userlist->get_context();
// Sanity check that context is at the User context level, then get the userid.
if ($context->contextlevel !== CONTEXT_USER) {
return;
}
$userids = $userlist->get_userids();
list($insql, $inparams) = $DB->get_in_or_equal($userids, SQL_PARAMS_NAMED);
$params = [
'contextid' => $context->id,
'contextuser' => CONTEXT_USER,
];
$params = array_merge($params, $inparams);
// Fetch the repository_onedrive_access IDs in the context for approved users.
$sql = "SELECT roa.id
FROM {repository_onedrive_access} roa
JOIN {context} c ON c.instanceid = roa.usermodified
AND c.contextlevel = :contextuser
AND c.id = :contextid
WHERE roa.usermodified {$insql}";
$accessids = $DB->get_fieldset_sql($sql, $params);
// Delete the relevant repository_onedrive_access data.
list($insql, $params) = $DB->get_in_or_equal($accessids, SQL_PARAMS_NAMED);
$DB->delete_records_select('repository_onedrive_access', "id {$insql}", $params);
}
}