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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 class for requesting user data. | ||
* | ||
* @package tool_monitor | ||
* @copyright 2018 Adrian Greeve <adrian@moodle.com> | ||
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later | ||
*/ | ||
namespace tool_monitor\privacy; | ||
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defined('MOODLE_INTERNAL') || die(); | ||
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use \core_privacy\local\metadata\collection; | ||
use \core_privacy\local\request\contextlist; | ||
use \core_privacy\local\request\approved_contextlist; | ||
use \core_privacy\local\request\transform; | ||
use \core_privacy\local\request\writer; | ||
use \tool_monitor\subscription_manager; | ||
use \tool_monitor\rule_manager; | ||
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/** | ||
* Privacy provider for tool_monitor | ||
* | ||
* @package tool_monitor | ||
* @copyright 2018 Adrian Greeve <adrian@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\plugin\provider { | ||
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/** | ||
* Get information about the user data stored by this plugin. | ||
* | ||
* @param collection $collection An object for storing metadata. | ||
* @return collection The metadata. | ||
*/ | ||
public static function get_metadata(collection $collection) : collection { | ||
$toolmonitorrules = [ | ||
'description' => 'privacy:metadata:description', | ||
'name' => 'privacy:metadata:name', | ||
'userid' => 'privacy:metadata:userid', | ||
'plugin' => 'privacy:metadata:plugin', | ||
'eventname' => 'privacy:metadata:eventname', | ||
'template' => 'privacy:metadata:template', | ||
'frequency' => 'privacy:metadata:frequency', | ||
'timewindow' => 'privacy:metadata:timewindow', | ||
'timemodified' => 'privacy:metadata:timemodifiedrule', | ||
'timecreated' => 'privacy:metadata:timecreatedrule' | ||
]; | ||
$toolmonitorsubscriptions = [ | ||
'userid' => 'privacy:metadata:useridsub', | ||
'timecreated' => 'privacy:metadata:timecreatedsub', | ||
'lastnotificationsent' => 'privacy:metadata:lastnotificationsent', | ||
'inactivedate' => 'privacy:metadata:inactivedate' | ||
]; | ||
// Tool monitor history doesn't look like it is used at all. | ||
$toolmonitorhistory = [ | ||
'userid' => 'privacy:metadata:useridhistory', | ||
'timesent' => 'privacy:metadata:timesent' | ||
]; | ||
$collection->add_database_table('tool_monitor_rules', $toolmonitorrules, 'privacy:metadata:rulessummary'); | ||
$collection->add_database_table('tool_monitor_subscriptions', $toolmonitorsubscriptions, | ||
'privacy:metadata:subscriptionssummary'); | ||
$collection->add_database_table('tool_monitor_history', $toolmonitorhistory, 'privacy:metadata:historysummary'); | ||
$collection->link_subsystem('core_message', 'privacy:metadata:messagesummary'); | ||
return $collection; | ||
} | ||
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/** | ||
* Return all contexts for this userid. In this situation the user context. | ||
* | ||
* @param int $userid The user ID. | ||
* @return contextlist The list of context IDs. | ||
*/ | ||
public static function get_contexts_for_userid(int $userid) : contextlist { | ||
$params = ['useridrules' => $userid, 'useridsubscriptions' => $userid, 'contextuserrule' => CONTEXT_USER, | ||
'contextusersub' => CONTEXT_USER]; | ||
$sql = "SELECT DISTINCT ctx.id | ||
FROM {context} ctx | ||
LEFT JOIN {tool_monitor_rules} mr ON ctx.instanceid = mr.userid AND ctx.contextlevel = :contextuserrule | ||
LEFT JOIN {tool_monitor_subscriptions} ms ON ctx.instanceid = ms.userid AND ctx.contextlevel = :contextusersub | ||
WHERE (ms.userid = :useridrules OR mr.userid = :useridsubscriptions)"; | ||
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$contextlist = new contextlist(); | ||
$contextlist->add_from_sql($sql, $params); | ||
return $contextlist; | ||
} | ||
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/** | ||
* Export all event monitor information for the list of contexts and this user. | ||
* | ||
* @param approved_contextlist $contextlist The list of approved contexts for a user. | ||
*/ | ||
public static function export_user_data(approved_contextlist $contextlist) { | ||
global $DB; | ||
// Export rules. | ||
$context = \context_user::instance($contextlist->get_user()->id); | ||
$rules = $DB->get_records('tool_monitor_rules', ['userid' => $contextlist->get_user()->id]); | ||
if ($rules) { | ||
static::export_monitor_rules($rules, $context); | ||
} | ||
// Export subscriptions. | ||
$subscriptions = subscription_manager::get_user_subscriptions(0, 0, $contextlist->get_user()->id); | ||
if ($subscriptions) { | ||
static::export_monitor_subscriptions($subscriptions, $context); | ||
} | ||
} | ||
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/** | ||
* Delete all user data for this context. | ||
* | ||
* @param \context $context The context to delete data for. | ||
*/ | ||
public static function delete_data_for_all_users_in_context(\context $context) { | ||
// Only delete data for user contexts. | ||
if ($context->contextlevel == CONTEXT_USER) { | ||
static::delete_user_data($context->instanceid); | ||
} | ||
} | ||
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/** | ||
* Delete all user data for this user only. | ||
* | ||
* @param approved_contextlist $contextlist The list of approved contexts for a user. | ||
*/ | ||
public static function delete_data_for_user(approved_contextlist $contextlist) { | ||
static::delete_user_data($contextlist->get_user()->id); | ||
} | ||
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/** | ||
* This does the deletion of user data for the event monitor. | ||
* | ||
* @param int $userid The user ID | ||
*/ | ||
protected static function delete_user_data(int $userid) { | ||
global $DB; | ||
// Delete this user's subscriptions first. | ||
subscription_manager::delete_user_subscriptions($userid); | ||
// Because we only use user contexts the instance ID is the user ID. | ||
// Get the rules and check if this user has the capability to delete them. | ||
$rules = $DB->get_records('tool_monitor_rules', ['userid' => $userid]); | ||
foreach ($rules as $ruledata) { | ||
$rule = rule_manager::get_rule($ruledata); | ||
// If no-one is suscribed to the rule then it is safe to delete. | ||
if ($rule->can_manage_rule($userid) && subscription_manager::count_rule_subscriptions($rule->id) == 0) { | ||
$rule->delete_rule(); | ||
} | ||
} | ||
} | ||
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/** | ||
* This formats and then exports the monitor rules. | ||
* | ||
* @param array $rules The monitor rules. | ||
* @param context_user $context The user context | ||
*/ | ||
protected static function export_monitor_rules(array $rules, \context_user $context) { | ||
foreach ($rules as $rule) { | ||
$rule = rule_manager::get_rule($rule); | ||
$ruledata = new \stdClass(); | ||
$ruledata->name = $rule->name; | ||
$ruledata->eventname = $rule->get_event_name(); | ||
$ruledata->description = $rule->get_description($context); | ||
$ruledata->plugin = $rule->get_plugin_name(); | ||
$ruledata->template = $rule->template; | ||
$ruledata->frequency = $rule->get_filters_description(); | ||
$ruledata->course = $rule->get_course_name($context); | ||
$ruledata->timecreated = transform::datetime($rule->timecreated); | ||
$ruledata->timemodified = transform::datetime($rule->timemodified); | ||
writer::with_context($context)->export_data([get_string('privacy:createdrules', 'tool_monitor'), | ||
$rule->name . '_' . $rule->id], $ruledata); | ||
} | ||
} | ||
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/** | ||
* This formats and then exports the event monitor subscriptions. | ||
* | ||
* @param array $subscriptions Subscriptions | ||
* @param \context_user $context The user context | ||
*/ | ||
protected static function export_monitor_subscriptions(array $subscriptions, \context_user $context) { | ||
foreach ($subscriptions as $subscription) { | ||
$subscriptiondata = new \stdClass(); | ||
$subscriptiondata->instancename = $subscription->get_instance_name(); | ||
$subscriptiondata->eventname = $subscription->get_event_name(); | ||
$subscriptiondata->frequency = $subscription->get_filters_description(); | ||
$subscriptiondata->name = $subscription->get_name($context); | ||
$subscriptiondata->description = $subscription->get_description($context); | ||
$subscriptiondata->pluginname = $subscription->get_plugin_name(); | ||
$subscriptiondata->course = $subscription->get_course_name($context); | ||
$subscriptiondata->timecreated = transform::datetime($subscription->timecreated); | ||
$subscriptiondata->lastnotificationsent = transform::datetime($subscription->lastnotificationsent); | ||
writer::with_context($context)->export_data([get_string('privacy:subscriptions', 'tool_monitor'), | ||
$subscriptiondata->name . '_' . $subscription->id, $subscriptiondata->course, $subscriptiondata->instancename], | ||
$subscriptiondata); | ||
} | ||
} | ||
} |
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