/**
* Filter out admin groups to avoid privilege escalation,
* If any admin groups are requested, deny the whole save operation.
*
* @param array $ids Database IDs of Group records
* @return bool True if the change can be accepted
*/
public function onChangeGroups($ids)
{
// unless the current user is an admin already OR the logged in user is an admin
if (Permission::check('ADMIN') || Permission::checkMember($this, 'ADMIN')) {
return true;
}
// If there are no admin groups in this set then it's ok
$adminGroups = Permission::get_groups_by_permission('ADMIN');
$adminGroupIDs = $adminGroups ? $adminGroups->column('ID') : array();
return count(array_intersect($ids, $adminGroupIDs)) == 0;
}
/**
* Return an existing member with administrator privileges, or create one of necessary.
*
* Will create a default 'Administrators' group if no group is found
* with an ADMIN permission. Will create a new 'Admin' member with administrative permissions
* if no existing Member with these permissions is found.
*
* Important: Any newly created administrator accounts will NOT have valid
* login credentials (Email/Password properties), which means they can't be used for login
* purposes outside of any default credentials set through {@link Security::setDefaultAdmin()}.
*
* @return Member
*/
public static function findAnAdministrator()
{
// coupling to subsites module
$origSubsite = null;
if (is_callable('Subsite::changeSubsite')) {
$origSubsite = \Subsite::currentSubsiteID();
\Subsite::changeSubsite(0);
}
$member = null;
// find a group with ADMIN permission
$adminGroup = Permission::get_groups_by_permission('ADMIN')->first();
if (is_callable('Subsite::changeSubsite')) {
\Subsite::changeSubsite($origSubsite);
}
if ($adminGroup) {
$member = $adminGroup->Members()->First();
}
if (!$adminGroup) {
Group::singleton()->requireDefaultRecords();
$adminGroup = Permission::get_groups_by_permission('ADMIN')->first();
}
if (!$member) {
Member::singleton()->requireDefaultRecords();
$member = Permission::get_members_by_permission('ADMIN')->first();
}
if (!$member) {
$member = Member::default_admin();
}
if (!$member) {
// Failover to a blank admin
$member = Member::create();
$member->FirstName = _t('Member.DefaultAdminFirstname', 'Default Admin');
$member->write();
// Add member to group instead of adding group to member
// This bypasses the privilege escallation code in Member_GroupSet
$adminGroup->DirectMembers()->add($member);
}
return $member;
}
/**
* Add default records to database.
*
* This function is called whenever the database is built, after the
* database tables have all been created.
*/
public function requireDefaultRecords()
{
parent::requireDefaultRecords();
// Add default author group if no other group exists
$allGroups = DataObject::get('SilverStripe\\Security\\Group');
if (!$allGroups->count()) {
$authorGroup = new Group();
$authorGroup->Code = 'content-authors';
$authorGroup->Title = _t('Group.DefaultGroupTitleContentAuthors', 'Content Authors');
$authorGroup->Sort = 1;
$authorGroup->write();
Permission::grant($authorGroup->ID, 'CMS_ACCESS_CMSMain');
Permission::grant($authorGroup->ID, 'CMS_ACCESS_AssetAdmin');
Permission::grant($authorGroup->ID, 'CMS_ACCESS_ReportAdmin');
Permission::grant($authorGroup->ID, 'SITETREE_REORGANISE');
}
// Add default admin group if none with permission code ADMIN exists
$adminGroups = Permission::get_groups_by_permission('ADMIN');
if (!$adminGroups->count()) {
$adminGroup = new Group();
$adminGroup->Code = 'administrators';
$adminGroup->Title = _t('Group.DefaultGroupTitleAdministrators', 'Administrators');
$adminGroup->Sort = 0;
$adminGroup->write();
Permission::grant($adminGroup->ID, 'ADMIN');
}
// Members are populated through Member->requireDefaultRecords()
}
