/**
* Marks user deleted in internal user database and notifies the auth plugin.
* Also unenrols user from all roles and does other cleanup.
*
* Any plugin that needs to purge user data should register the 'user_deleted' event.
*
* @param object $user User object before delete
* @return boolean always true
*/
function delete_user($user)
{
global $CFG, $DB;
require_once $CFG->libdir . '/grouplib.php';
require_once $CFG->libdir . '/gradelib.php';
require_once $CFG->dirroot . '/message/lib.php';
require_once $CFG->dirroot . '/tag/lib.php';
// delete all grades - backup is kept in grade_grades_history table
grade_user_delete($user->id);
//move unread messages from this user to read
message_move_userfrom_unread2read($user->id);
// TODO: remove from cohorts using standard API here
// remove user tags
tag_set('user', $user->id, array());
// unconditionally unenrol from all courses
enrol_user_delete($user);
// unenrol from all roles in all contexts
role_unassign_all(array('userid' => $user->id));
// this might be slow but it is really needed - modules might do some extra cleanup!
//now do a brute force cleanup
// remove from all cohorts
$DB->delete_records('cohort_members', array('userid' => $user->id));
// remove from all groups
$DB->delete_records('groups_members', array('userid' => $user->id));
// brute force unenrol from all courses
$DB->delete_records('user_enrolments', array('userid' => $user->id));
// purge user preferences
$DB->delete_records('user_preferences', array('userid' => $user->id));
// purge user extra profile info
$DB->delete_records('user_info_data', array('userid' => $user->id));
// last course access not necessary either
$DB->delete_records('user_lastaccess', array('userid' => $user->id));
// now do a final accesslib cleanup - removes all role assignments in user context and context itself
delete_context(CONTEXT_USER, $user->id);
// workaround for bulk deletes of users with the same email address
$delname = "{$user->email}." . time();
while ($DB->record_exists('user', array('username' => $delname))) {
// no need to use mnethostid here
$delname++;
}
// mark internal user record as "deleted"
$updateuser = new stdClass();
$updateuser->id = $user->id;
$updateuser->deleted = 1;
$updateuser->username = $delname;
// Remember it just in case
$updateuser->email = md5($user->username);
// Store hash of username, useful importing/restoring users
$updateuser->idnumber = '';
// Clear this field to free it up
$updateuser->timemodified = time();
$DB->update_record('user', $updateuser);
// notify auth plugin - do not block the delete even when plugin fails
$authplugin = get_auth_plugin($user->auth);
$authplugin->user_delete($user);
// any plugin that needs to cleanup should register this event
events_trigger('user_deleted', $user);
return true;
}
/**
* Marks user deleted in internal user database and notifies the auth plugin.
* Also unenrols user from all roles and does other cleanup.
*
* Any plugin that needs to purge user data should register the 'user_deleted' event.
*
* @param stdClass $user full user object before delete
* @return boolean success
* @throws coding_exception if invalid $user parameter detected
*/
function delete_user(stdClass $user)
{
global $CFG, $DB;
require_once $CFG->libdir . '/grouplib.php';
require_once $CFG->libdir . '/gradelib.php';
require_once $CFG->dirroot . '/message/lib.php';
require_once $CFG->dirroot . '/user/lib.php';
// Make sure nobody sends bogus record type as parameter.
if (!property_exists($user, 'id') or !property_exists($user, 'username')) {
throw new coding_exception('Invalid $user parameter in delete_user() detected');
}
// Better not trust the parameter and fetch the latest info this will be very expensive anyway.
if (!($user = $DB->get_record('user', array('id' => $user->id)))) {
debugging('Attempt to delete unknown user account.');
return false;
}
// There must be always exactly one guest record, originally the guest account was identified by username only,
// now we use $CFG->siteguest for performance reasons.
if ($user->username === 'guest' or isguestuser($user)) {
debugging('Guest user account can not be deleted.');
return false;
}
// Admin can be theoretically from different auth plugin, but we want to prevent deletion of internal accoutns only,
// if anything goes wrong ppl may force somebody to be admin via config.php setting $CFG->siteadmins.
if ($user->auth === 'manual' and is_siteadmin($user)) {
debugging('Local administrator accounts can not be deleted.');
return false;
}
// Allow plugins to use this user object before we completely delete it.
if ($pluginsfunction = get_plugins_with_function('pre_user_delete')) {
foreach ($pluginsfunction as $plugintype => $plugins) {
foreach ($plugins as $pluginfunction) {
$pluginfunction($user);
}
}
}
// Keep user record before updating it, as we have to pass this to user_deleted event.
$olduser = clone $user;
// Keep a copy of user context, we need it for event.
$usercontext = context_user::instance($user->id);
// Delete all grades - backup is kept in grade_grades_history table.
grade_user_delete($user->id);
// Move unread messages from this user to read.
message_move_userfrom_unread2read($user->id);
// TODO: remove from cohorts using standard API here.
// Remove user tags.
core_tag_tag::remove_all_item_tags('core', 'user', $user->id);
// Unconditionally unenrol from all courses.
enrol_user_delete($user);
// Unenrol from all roles in all contexts.
// This might be slow but it is really needed - modules might do some extra cleanup!
role_unassign_all(array('userid' => $user->id));
// Now do a brute force cleanup.
// Remove from all cohorts.
$DB->delete_records('cohort_members', array('userid' => $user->id));
// Remove from all groups.
$DB->delete_records('groups_members', array('userid' => $user->id));
// Brute force unenrol from all courses.
$DB->delete_records('user_enrolments', array('userid' => $user->id));
// Purge user preferences.
$DB->delete_records('user_preferences', array('userid' => $user->id));
// Purge user extra profile info.
$DB->delete_records('user_info_data', array('userid' => $user->id));
// Purge log of previous password hashes.
$DB->delete_records('user_password_history', array('userid' => $user->id));
// Last course access not necessary either.
$DB->delete_records('user_lastaccess', array('userid' => $user->id));
// Remove all user tokens.
$DB->delete_records('external_tokens', array('userid' => $user->id));
// Unauthorise the user for all services.
$DB->delete_records('external_services_users', array('userid' => $user->id));
// Remove users private keys.
$DB->delete_records('user_private_key', array('userid' => $user->id));
// Remove users customised pages.
$DB->delete_records('my_pages', array('userid' => $user->id, 'private' => 1));
// Force logout - may fail if file based sessions used, sorry.
\core\session\manager::kill_user_sessions($user->id);
// Generate username from email address, or a fake email.
$delemail = !empty($user->email) ? $user->email : $user->username . '.' . $user->id . '@unknownemail.invalid';
$delname = clean_param($delemail . "." . time(), PARAM_USERNAME);
// Workaround for bulk deletes of users with the same email address.
while ($DB->record_exists('user', array('username' => $delname))) {
// No need to use mnethostid here.
$delname++;
}
// Mark internal user record as "deleted".
$updateuser = new stdClass();
$updateuser->id = $user->id;
$updateuser->deleted = 1;
$updateuser->username = $delname;
// Remember it just in case.
$updateuser->email = md5($user->username);
// Store hash of username, useful importing/restoring users.
$updateuser->idnumber = '';
// Clear this field to free it up.
$updateuser->picture = 0;
$updateuser->timemodified = time();
// Don't trigger update event, as user is being deleted.
user_update_user($updateuser, false, false);
// Now do a final accesslib cleanup - removes all role assignments in user context and context itself.
context_helper::delete_instance(CONTEXT_USER, $user->id);
// Any plugin that needs to cleanup should register this event.
// Trigger event.
$event = \core\event\user_deleted::create(array('objectid' => $user->id, 'relateduserid' => $user->id, 'context' => $usercontext, 'other' => array('username' => $user->username, 'email' => $user->email, 'idnumber' => $user->idnumber, 'picture' => $user->picture, 'mnethostid' => $user->mnethostid)));
$event->add_record_snapshot('user', $olduser);
$event->trigger();
// We will update the user's timemodified, as it will be passed to the user_deleted event, which
// should know about this updated property persisted to the user's table.
$user->timemodified = $updateuser->timemodified;
// Notify auth plugin - do not block the delete even when plugin fails.
$authplugin = get_auth_plugin($user->auth);
$authplugin->user_delete($user);
return true;
}
/**
* Marks user deleted in internal user database and notifies the auth plugin.
* Also unenrols user from all roles and does other cleanup.
*
* Any plugin that needs to purge user data should register the 'user_deleted' event.
*
* @param stdClass $user full user object before delete
* @return boolean success
* @throws coding_exception if invalid $user parameter detected
*/
function delete_user(stdClass $user)
{
global $CFG, $DB;
require_once $CFG->libdir . '/grouplib.php';
require_once $CFG->libdir . '/gradelib.php';
require_once $CFG->dirroot . '/message/lib.php';
require_once $CFG->dirroot . '/tag/lib.php';
// Make sure nobody sends bogus record type as parameter.
if (!property_exists($user, 'id') or !property_exists($user, 'username')) {
throw new coding_exception('Invalid $user parameter in delete_user() detected');
}
// Better not trust the parameter and fetch the latest info,
// this will be very expensive anyway.
if (!($user = $DB->get_record('user', array('id' => $user->id)))) {
debugging('Attempt to delete unknown user account.');
return false;
}
// There must be always exactly one guest record,
// originally the guest account was identified by username only,
// now we use $CFG->siteguest for performance reasons.
if ($user->username === 'guest' or isguestuser($user)) {
debugging('Guest user account can not be deleted.');
return false;
}
// Admin can be theoretically from different auth plugin,
// but we want to prevent deletion of internal accoutns only,
// if anything goes wrong ppl may force somebody to be admin via
// config.php setting $CFG->siteadmins.
if ($user->auth === 'manual' and is_siteadmin($user)) {
debugging('Local administrator accounts can not be deleted.');
return false;
}
// delete all grades - backup is kept in grade_grades_history table
grade_user_delete($user->id);
//move unread messages from this user to read
message_move_userfrom_unread2read($user->id);
// TODO: remove from cohorts using standard API here
// remove user tags
tag_set('user', $user->id, array());
// unconditionally unenrol from all courses
enrol_user_delete($user);
// unenrol from all roles in all contexts
role_unassign_all(array('userid' => $user->id));
// this might be slow but it is really needed - modules might do some extra cleanup!
//now do a brute force cleanup
// remove from all cohorts
$DB->delete_records('cohort_members', array('userid' => $user->id));
// remove from all groups
$DB->delete_records('groups_members', array('userid' => $user->id));
// brute force unenrol from all courses
$DB->delete_records('user_enrolments', array('userid' => $user->id));
// purge user preferences
$DB->delete_records('user_preferences', array('userid' => $user->id));
// purge user extra profile info
$DB->delete_records('user_info_data', array('userid' => $user->id));
// last course access not necessary either
$DB->delete_records('user_lastaccess', array('userid' => $user->id));
// remove all user tokens
$DB->delete_records('external_tokens', array('userid' => $user->id));
// unauthorise the user for all services
$DB->delete_records('external_services_users', array('userid' => $user->id));
// Remove users private keys.
$DB->delete_records('user_private_key', array('userid' => $user->id));
// Remove users customised pages.
$DB->delete_records('my_pages', array('userid' => $user->id, 'private' => 1));
// force logout - may fail if file based sessions used, sorry
session_kill_user($user->id);
// now do a final accesslib cleanup - removes all role assignments in user context and context itself
delete_context(CONTEXT_USER, $user->id);
// workaround for bulk deletes of users with the same email address
$delname = "{$user->email}." . time();
while ($DB->record_exists('user', array('username' => $delname))) {
// no need to use mnethostid here
$delname++;
}
// mark internal user record as "deleted"
$updateuser = new stdClass();
$updateuser->id = $user->id;
$updateuser->deleted = 1;
$updateuser->username = $delname;
// Remember it just in case
$updateuser->email = md5($user->username);
// Store hash of username, useful importing/restoring users
$updateuser->idnumber = '';
// Clear this field to free it up
$updateuser->picture = 0;
$updateuser->timemodified = time();
$DB->update_record('user', $updateuser);
// Add this action to log
add_to_log(SITEID, 'user', 'delete', "view.php?id={$user->id}", $user->firstname . ' ' . $user->lastname);
// We will update the user's timemodified, as it will be passed to the user_deleted event, which
// should know about this updated property persisted to the user's table.
$user->timemodified = $updateuser->timemodified;
// notify auth plugin - do not block the delete even when plugin fails
$authplugin = get_auth_plugin($user->auth);
$authplugin->user_delete($user);
// any plugin that needs to cleanup should register this event
events_trigger('user_deleted', $user);
return true;
}