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255 lines
11 KiB
255 lines
11 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Privacy class for requesting user data.
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*
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* @package tool_monitor
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* @copyright 2018 Adrian Greeve <adrian@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace tool_monitor\privacy;
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defined('MOODLE_INTERNAL') || die();
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use \core_privacy\local\metadata\collection;
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use \core_privacy\local\request\contextlist;
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use \core_privacy\local\request\approved_contextlist;
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use \core_privacy\local\request\approved_userlist;
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use \core_privacy\local\request\transform;
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use \core_privacy\local\request\userlist;
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use \core_privacy\local\request\writer;
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use \tool_monitor\subscription_manager;
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use \tool_monitor\rule_manager;
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/**
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* Privacy provider for tool_monitor
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*
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* @package tool_monitor
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* @copyright 2018 Adrian Greeve <adrian@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class provider implements
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\core_privacy\local\metadata\provider,
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\core_privacy\local\request\core_userlist_provider,
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\core_privacy\local\request\plugin\provider {
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/**
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* Get information about the user data stored by this plugin.
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*
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* @param collection $collection An object for storing metadata.
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* @return collection The metadata.
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*/
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public static function get_metadata(collection $collection) : collection {
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$toolmonitorrules = [
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'description' => 'privacy:metadata:description',
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'name' => 'privacy:metadata:name',
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'userid' => 'privacy:metadata:userid',
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'plugin' => 'privacy:metadata:plugin',
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'eventname' => 'privacy:metadata:eventname',
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'template' => 'privacy:metadata:template',
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'frequency' => 'privacy:metadata:frequency',
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'timewindow' => 'privacy:metadata:timewindow',
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'timemodified' => 'privacy:metadata:timemodifiedrule',
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'timecreated' => 'privacy:metadata:timecreatedrule'
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];
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$toolmonitorsubscriptions = [
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'userid' => 'privacy:metadata:useridsub',
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'timecreated' => 'privacy:metadata:timecreatedsub',
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'lastnotificationsent' => 'privacy:metadata:lastnotificationsent',
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'inactivedate' => 'privacy:metadata:inactivedate'
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];
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// Tool monitor history doesn't look like it is used at all.
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$toolmonitorhistory = [
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'userid' => 'privacy:metadata:useridhistory',
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'timesent' => 'privacy:metadata:timesent'
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];
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$collection->add_database_table('tool_monitor_rules', $toolmonitorrules, 'privacy:metadata:rulessummary');
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$collection->add_database_table('tool_monitor_subscriptions', $toolmonitorsubscriptions,
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'privacy:metadata:subscriptionssummary');
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$collection->add_database_table('tool_monitor_history', $toolmonitorhistory, 'privacy:metadata:historysummary');
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$collection->link_subsystem('core_message', 'privacy:metadata:messagesummary');
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return $collection;
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}
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/**
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* Return all contexts for this userid. In this situation the user context.
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*
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* @param int $userid The user ID.
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* @return contextlist The list of context IDs.
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*/
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public static function get_contexts_for_userid(int $userid) : contextlist {
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$params = ['useridrules' => $userid, 'useridsubscriptions' => $userid, 'contextuserrule' => CONTEXT_USER,
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'contextusersub' => CONTEXT_USER];
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$sql = "SELECT DISTINCT ctx.id
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FROM {context} ctx
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LEFT JOIN {tool_monitor_rules} mr ON ctx.instanceid = mr.userid AND ctx.contextlevel = :contextuserrule
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AND mr.userid = :useridsubscriptions
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LEFT JOIN {tool_monitor_subscriptions} ms ON ctx.instanceid = ms.userid AND ctx.contextlevel = :contextusersub
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AND ms.userid = :useridrules
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WHERE ms.id IS NOT NULL OR mr.id IS NOT NULL";
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$contextlist = new contextlist();
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$contextlist->add_from_sql($sql, $params);
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return $contextlist;
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}
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/**
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* Get the list of users who have data within a context.
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*
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* @param userlist $userlist The userlist containing the list of users who have data in this context/plugin combination.
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*/
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public static function get_users_in_context(userlist $userlist) {
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$context = $userlist->get_context();
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if (!$context instanceof \context_user) {
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return;
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}
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$params = ['userid' => $context->instanceid];
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$sql = "SELECT userid FROM {tool_monitor_rules} WHERE userid = :userid";
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$userlist->add_from_sql('userid', $sql, $params);
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$sql = "SELECT userid FROM {tool_monitor_subscriptions} WHERE userid = :userid";
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$userlist->add_from_sql('userid', $sql, $params);
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}
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/**
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* Export all event monitor information for the list of contexts and this user.
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*
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* @param approved_contextlist $contextlist The list of approved contexts for a user.
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*/
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public static function export_user_data(approved_contextlist $contextlist) {
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global $DB;
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// Export rules.
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$context = \context_user::instance($contextlist->get_user()->id);
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$rules = $DB->get_records('tool_monitor_rules', ['userid' => $contextlist->get_user()->id]);
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if ($rules) {
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static::export_monitor_rules($rules, $context);
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}
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// Export subscriptions.
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$subscriptions = subscription_manager::get_user_subscriptions(0, 0, $contextlist->get_user()->id);
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if ($subscriptions) {
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static::export_monitor_subscriptions($subscriptions, $context);
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}
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}
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/**
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* Delete all user data for this context.
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*
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* @param \context $context The context to delete data for.
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*/
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public static function delete_data_for_all_users_in_context(\context $context) {
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// Only delete data for user contexts.
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if ($context->contextlevel == CONTEXT_USER) {
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static::delete_user_data($context->instanceid);
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}
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}
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/**
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* Delete all user data for this user only.
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*
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* @param approved_contextlist $contextlist The list of approved contexts for a user.
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*/
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public static function delete_data_for_user(approved_contextlist $contextlist) {
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static::delete_user_data($contextlist->get_user()->id);
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}
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/**
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* Delete multiple users within a single context.
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*
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* @param approved_userlist $userlist The approved context and user information to delete information for.
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*/
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public static function delete_data_for_users(approved_userlist $userlist) {
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$context = $userlist->get_context();
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$userids = $userlist->get_userids();
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$userid = reset($userids);
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// Only delete data for user context, which should be a single user.
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if ($context->contextlevel == CONTEXT_USER && count($userids) == 1 && $userid == $context->instanceid) {
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static::delete_user_data($userid);
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}
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}
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/**
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* This does the deletion of user data for the event monitor.
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*
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* @param int $userid The user ID
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*/
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protected static function delete_user_data(int $userid) {
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global $DB;
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// Delete this user's subscriptions first.
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subscription_manager::delete_user_subscriptions($userid);
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// Because we only use user contexts the instance ID is the user ID.
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// Get the rules and check if this user has the capability to delete them.
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$rules = $DB->get_records('tool_monitor_rules', ['userid' => $userid]);
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foreach ($rules as $ruledata) {
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$rule = rule_manager::get_rule($ruledata);
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// If no-one is suscribed to the rule then it is safe to delete.
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if ($rule->can_manage_rule($userid) && subscription_manager::count_rule_subscriptions($rule->id) == 0) {
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$rule->delete_rule();
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}
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}
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}
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/**
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* This formats and then exports the monitor rules.
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*
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* @param array $rules The monitor rules.
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* @param context_user $context The user context
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*/
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protected static function export_monitor_rules(array $rules, \context_user $context) {
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foreach ($rules as $rule) {
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$rule = rule_manager::get_rule($rule);
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$ruledata = new \stdClass();
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$ruledata->name = $rule->name;
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$ruledata->eventname = $rule->get_event_name();
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$ruledata->description = $rule->get_description($context);
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$ruledata->plugin = $rule->get_plugin_name();
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$ruledata->template = $rule->template;
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$ruledata->frequency = $rule->get_filters_description();
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$ruledata->course = $rule->get_course_name($context);
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$ruledata->timecreated = transform::datetime($rule->timecreated);
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$ruledata->timemodified = transform::datetime($rule->timemodified);
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writer::with_context($context)->export_data([get_string('privacy:createdrules', 'tool_monitor'),
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$rule->name . '_' . $rule->id], $ruledata);
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}
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}
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/**
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* This formats and then exports the event monitor subscriptions.
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*
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* @param array $subscriptions Subscriptions
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* @param \context_user $context The user context
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*/
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protected static function export_monitor_subscriptions(array $subscriptions, \context_user $context) {
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foreach ($subscriptions as $subscription) {
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$subscriptiondata = new \stdClass();
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$subscriptiondata->instancename = $subscription->get_instance_name();
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$subscriptiondata->eventname = $subscription->get_event_name();
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$subscriptiondata->frequency = $subscription->get_filters_description();
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$subscriptiondata->name = $subscription->get_name($context);
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$subscriptiondata->description = $subscription->get_description($context);
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$subscriptiondata->pluginname = $subscription->get_plugin_name();
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$subscriptiondata->course = $subscription->get_course_name($context);
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$subscriptiondata->timecreated = transform::datetime($subscription->timecreated);
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$subscriptiondata->lastnotificationsent = transform::datetime($subscription->lastnotificationsent);
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writer::with_context($context)->export_data([get_string('privacy:subscriptions', 'tool_monitor'),
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$subscriptiondata->name . '_' . $subscription->id, $subscriptiondata->course, $subscriptiondata->instancename],
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$subscriptiondata);
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}
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}
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}
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