class.ilPermissionGUI.php

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<?php
declare(strict_types=1);

class ilPermissionGUI extends ilPermission2GUI
{
    protected const CMD_PERM_POSITIONS = 'permPositions';
    public const CMD_SAVE_POSITIONS_PERMISSIONS = 'savePositionsPermissions';

    protected object $current_obj;

    protected ilRecommendedContentManager $recommended_content_manager;
    protected ilToolbarGUI $toolbar;
    protected \ILIAS\HTTP\Wrapper\WrapperFactory $wrapper;

    public function __construct(object $a_gui_obj)
    {
        global $DIC;

        $this->wrapper = $DIC->http()->wrapper();
        $this->toolbar = $DIC->toolbar();
        parent::__construct($a_gui_obj);
        $this->recommended_content_manager = new ilRecommendedContentManager();
    }

    public function executeCommand(): void
    {
        // access to all functions in this class are only allowed if edit_permission is granted
        if (!$this->rbacsystem->checkAccess("edit_permission", $this->gui_obj->getObject()->getRefId())) {
            $this->tpl->setOnScreenMessage('failure', $this->lng->txt('permission_denied'), true);
            $this->ctrl->redirect($this->gui_obj);
        }
        $next_class = $this->ctrl->getNextClass($this);
        switch ($next_class) {
            case "ilobjrolegui":

                $role_id = 0;
                if ($this->http->wrapper()->query()->has('obj_id')) {
                    $role_id = $this->http->wrapper()->query()->retrieve(
                        'obj_id',
                        $this->refinery->kindlyTo()->int()
                    );
                }
                $this->ctrl->setReturn($this, 'perm');
                $this->gui_obj = new ilObjRoleGUI("", $role_id, false, false);
                $this->ctrl->forwardCommand($this->gui_obj);
                break;

            case 'ildidactictemplategui':
                $this->ctrl->setReturn($this, 'perm');
                $did = new ilDidacticTemplateGUI($this->gui_obj);
                $this->ctrl->forwardCommand($did);
                break;

            case 'ilrepositorysearchgui':
                // used for owner autocomplete
                $rep_search = new ilRepositorySearchGUI();
                $this->ctrl->forwardCommand($rep_search);
                break;

            case 'ilobjectpermissionstatusgui':
                $this->__initSubTabs("perminfo");
                $perm_stat = new ilObjectPermissionStatusGUI($this->gui_obj->getObject());
                $this->ctrl->forwardCommand($perm_stat);
                break;

            default:
                $cmd = $this->ctrl->getCmd();
                $this->$cmd();
                break;
        }
    }

    public function getCurrentObject(): object
    {
        return $this->gui_obj->getObject();
    }

    protected function confirmTemplateSwitch(): void
    {
        $this->ctrl->setReturn($this, 'perm');
        $this->ctrl->setCmdClass('ildidactictemplategui');
        $dtpl_gui = new ilDidacticTemplateGUI($this->gui_obj);
        $this->ctrl->forwardCommand($dtpl_gui);
    }

    public function perm(ilTable2GUI $table = null): void
    {
        $dtpl = new ilDidacticTemplateGUI($this->gui_obj);
        if ($dtpl->appendToolbarSwitch(
            $this->toolbar,
            $this->getCurrentObject()->getType(),
            $this->getCurrentObject()->getRefId()
        )) {
            $this->toolbar->addSeparator();
        }

        if ($this->objDefinition->hasLocalRoles($this->getCurrentObject()->getType()) && !$this->isAdministrationObject()
        ) {
            $this->toolbar->setFormAction($this->ctrl->getFormAction($this));

            if (!$this->isAdminRoleFolder()) {
                $this->toolbar->addButton(
                    $this->lng->txt('rbac_add_new_local_role'),
                    $this->ctrl->getLinkTarget($this, 'displayAddRoleForm')
                );
            }
            $this->toolbar->addButton(
                $this->lng->txt('rbac_import_role'),
                $this->ctrl->getLinkTarget($this, 'displayImportRoleForm')
            );
        }
        $this->__initSubTabs("perm");

        if (!$table instanceof ilTable2GUI) {
            $table = new ilObjectRolePermissionTableGUI($this, 'perm', $this->getCurrentObject()->getRefId());
        }
        $table->parse();
        $this->tpl->setContent($table->getHTML());
    }

    protected function isAdminRoleFolder(): bool
    {
        return $this->getCurrentObject()->getRefId() == ROLE_FOLDER_ID;
    }

    protected function isAdministrationObject(): bool
    {
        return $this->getCurrentObject()->getType() == 'adm';
    }

    protected function isInAdministration(): bool
    {
        return (bool) $GLOBALS['DIC']['tree']->isGrandChild(SYSTEM_FOLDER_ID, $this->getCurrentObject()->getRefId());
    }

    protected function applyFilter(): void
    {
        $table = new ilObjectRolePermissionTableGUI($this, 'perm', $this->getCurrentObject()->getRefId());
        $table->resetOffset();
        $table->writeFilterToSession();
        $this->perm($table);
    }

    protected function resetFilter(): void
    {
        $table = new ilObjectRolePermissionTableGUI($this, 'perm', $this->getCurrentObject()->getRefId());
        $table->resetOffset();
        $table->resetFilter();
        $this->perm($table);
    }

    public function applyRoleFilter(array $a_roles, int $a_filter_id): array
    {
        // Always delete administrator role from view
        if (isset($a_roles[SYSTEM_ROLE_ID])) {
            unset($a_roles[SYSTEM_ROLE_ID]);
        }

        switch ($a_filter_id) {
            // all roles in context
            case ilObjectRolePermissionTableGUI::ROLE_FILTER_ALL:
                return $a_roles;

                // only global roles
            case ilObjectRolePermissionTableGUI::ROLE_FILTER_GLOBAL:
                $arr_global_roles = $this->rbacreview->getGlobalRoles();
                $arr_remove_roles = array_diff(array_keys($a_roles), $arr_global_roles);
                foreach ($arr_remove_roles as $role_id) {
                    unset($a_roles[$role_id]);
                }
                return $a_roles;

                // only local roles (all local roles in context that are not defined at ROLE_FOLDER_ID)
            case ilObjectRolePermissionTableGUI::ROLE_FILTER_LOCAL:
                $arr_global_roles = $this->rbacreview->getGlobalRoles();
                foreach ($arr_global_roles as $role_id) {
                    unset($a_roles[$role_id]);
                }
                return $a_roles;

                // only roles which use a local policy
            case ilObjectRolePermissionTableGUI::ROLE_FILTER_LOCAL_POLICY:
                $arr_local_roles = $this->rbacreview->getRolesOfObject($this->getCurrentObject()->getRefId());
                $arr_remove_roles = array_diff(array_keys($a_roles), $arr_local_roles);
                foreach ($arr_remove_roles as $role_id) {
                    unset($a_roles[$role_id]);
                }
                return $a_roles;

                // only true local role defined at current position
            case ilObjectRolePermissionTableGUI::ROLE_FILTER_LOCAL_OBJECT:
                $arr_local_roles = $this->rbacreview->getRolesOfObject($this->getCurrentObject()->getRefId(), true);
                $arr_remove_roles = array_diff(array_keys($a_roles), $arr_local_roles);
                foreach ($arr_remove_roles as $role_id) {
                    unset($a_roles[$role_id]);
                }
                return $a_roles;

            default:
                return $a_roles;
        }
    }

    protected function savePermissions(): void
    {
        global $DIC;

        $rbacreview = $DIC['rbacreview'];
        $objDefinition = $DIC['objDefinition'];
        $rbacadmin = $DIC['rbacadmin'];

        $table = new ilObjectRolePermissionTableGUI($this, 'perm', $this->getCurrentObject()->getRefId());

        $roles = $this->applyRoleFilter(
            $rbacreview->getParentRoleIds($this->getCurrentObject()->getRefId()),
            (int) $table->getFilterItemByPostVar('role')->getValue()
        );

        // Log history
        $log_old = ilRbacLog::gatherFaPa($this->getCurrentObject()->getRefId(), array_keys((array) $roles));

        # all possible create permissions
        $possible_ops_ids = $rbacreview->getOperationsByTypeAndClass(
            $this->getCurrentObject()->getType(),
            'create'
        );

        # createable (activated) create permissions
        $create_types = $objDefinition->getCreatableSubObjects(
            $this->getCurrentObject()->getType()
        );
        $createable_ops_ids = ilRbacReview::lookupCreateOperationIds(array_keys((array) $create_types));

        $post_perm = $this->wrapper->post()->has('perm')
            ? $this->wrapper->post()->retrieve(
                'perm',
                $this->refinery->kindlyTo()->dictOf(
                    $this->refinery->kindlyTo()->dictOf(
                        $this->refinery->kindlyTo()->int()
                    )
                )
            )
            : [];

        foreach ($roles as $role => $role_data) {
            if ($role_data['protected']) {
                continue;
            }

            $new_ops = array_keys((array) ($post_perm[$role] ?? []));
            $old_ops = $rbacreview->getRoleOperationsOnObject(
                $role,
                $this->getCurrentObject()->getRefId()
            );

            // Add operations which were enabled and are not activated.
            foreach ($possible_ops_ids as $create_ops_id) {
                if (in_array($create_ops_id, $createable_ops_ids)) {
                    continue;
                }
                if (in_array($create_ops_id, $old_ops)) {
                    $new_ops[] = $create_ops_id;
                }
            }

            $rbacadmin->revokePermission(
                $this->getCurrentObject()->getRefId(),
                $role
            );

            $rbacadmin->grantPermission(
                $role,
                array_unique($new_ops),
                $this->getCurrentObject()->getRefId()
            );
        }

        if (ilPermissionGUI::hasContainerCommands($this->getCurrentObject()->getType())) {
            $inherit_post = $this->wrapper->post()->has('inherit')
                ? $this->wrapper->post()->retrieve(
                    'inherit',
                    $this->refinery->kindlyTo()->dictOf(
                        $this->refinery->kindlyTo()->bool()
                    )
                )
                : [];

            foreach ($roles as $role) {
                $obj_id = (int) $role['obj_id'];
                $parent_id = (int) $role['parent'];
                // No action for local roles
                if ($parent_id === $this->getCurrentObject()->getRefId() && $role['assign'] === 'y') {
                    continue;
                }
                // Nothing for protected roles
                if ($role['protected']) {
                    continue;
                }
                // Stop local policy
                if (
                    $parent_id === $this->getCurrentObject()->getRefId()
                    && !isset($inherit_post[$obj_id])
                    && !$rbacreview->isBlockedAtPosition($obj_id, $this->getCurrentObject()->getRefId())
                ) {
                    ilLoggerFactory::getLogger('ac')->debug('Stop local policy for: ' . $role['obj_id']);
                    $role_obj = ilObjectFactory::getInstanceByObjId($obj_id);
                    $role_obj->setParent($this->getCurrentObject()->getRefId());
                    $role_obj->delete();
                    continue;
                }
                // Add local policy
                if (
                    $parent_id !== $this->getCurrentObject()->getRefId()
                    && isset($inherit_post[$obj_id])
                ) {
                    ilLoggerFactory::getLogger('ac')->debug('Create local policy');
                    $rbacadmin->copyRoleTemplatePermissions(
                        $obj_id,
                        $parent_id,
                        $this->getCurrentObject()->getRefId(),
                        $obj_id
                    );
                    ilLoggerFactory::getLogger('ac')->debug('Assign role to folder');
                    $rbacadmin->assignRoleToFolder($obj_id, $this->getCurrentObject()->getRefId(), 'n');
                }
            }
        }

        // Protect permissions
        if (ilPermissionGUI::hasContainerCommands($this->getCurrentObject()->getType())) {
            $protected_post = $this->wrapper->post()->has('protect')
                ? $this->wrapper->post()->retrieve(
                    'protect',
                    $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
                )
                : [];
            foreach ($roles as $role) {
                $obj_id = (int) $role['obj_id'];
                if ($rbacreview->isAssignable($obj_id, $this->getCurrentObject()->getRefId())) {
                    if (isset($protected_post[$obj_id]) &&
                        !$rbacreview->isProtected($this->getCurrentObject()->getRefId(), $obj_id)) {
                        $rbacadmin->setProtected($this->getCurrentObject()->getRefId(), $obj_id, 'y');
                    } elseif (!isset($protected_post[$obj_id]) &&
                        $rbacreview->isProtected($this->getCurrentObject()->getRefId(), $obj_id)) {
                        $rbacadmin->setProtected($this->getCurrentObject()->getRefId(), $obj_id, 'n');
                    }
                }
            }
        }

        $log_new = ilRbacLog::gatherFaPa($this->getCurrentObject()->getRefId(), array_keys((array) $roles));
        $log = ilRbacLog::diffFaPa($log_old, $log_new);
        ilRbacLog::add(ilRbacLog::EDIT_PERMISSIONS, $this->getCurrentObject()->getRefId(), $log);

        $blocked_info = $this->getModifiedBlockedSettings();
        ilLoggerFactory::getLogger('ac')->debug('Blocked settings: ' . print_r($blocked_info, true));
        if ($blocked_info['num'] > 0) {
            $this->showConfirmBlockRole($blocked_info);
            return;
        }
        $this->tpl->setOnScreenMessage('success', $this->lng->txt('settings_saved'), true);
        $this->ctrl->redirect($this, 'perm');
        #$this->perm();
    }

    protected function showConfirmBlockRole(array $a_blocked_info): void
    {
        $info = '';
        if ($a_blocked_info['new_blocked']) {
            $info .= $this->lng->txt('role_confirm_block_role_info');
            if ($a_blocked_info['new_unblocked']) {
                $info .= '<br /><br />';
            }
        }
        if ($a_blocked_info['new_unblocked']) {
            $info .= ('<br />' . $this->lng->txt('role_confirm_unblock_role_info'));
        }

        $this->tpl->setOnScreenMessage('info', $info);

        $confirm = new ilConfirmationGUI();
        $confirm->setFormAction($this->ctrl->getFormAction($this));
        $confirm->setHeaderText($this->lng->txt('role_confirm_block_role_header'));
        $confirm->setConfirm($this->lng->txt('role_confirm_block_role'), 'modifyBlockRoles');
        $confirm->setCancel($this->lng->txt('cancel'), 'perm');

        foreach ($a_blocked_info['new_blocked'] as $role_id) {
            $confirm->addItem(
                'new_block[]',
                (string) $role_id,
                ilObjRole::_getTranslation(ilObject::_lookupTitle($role_id)) . ' ' . $this->lng->txt('role_blocked')
            );
        }
        foreach ($a_blocked_info['new_unblocked'] as $role_id) {
            $confirm->addItem(
                'new_unblock[]',
                (string) $role_id,
                ilObjRole::_getTranslation(ilObject::_lookupTitle($role_id)) . ' ' . $this->lng->txt('role_unblocked')
            );
        }
        $this->tpl->setContent($confirm->getHTML());
    }

    protected function modifyBlockRoles(): void
    {
        $this->blockRoles(
            $this->wrapper->post()->has('new_block')
                ? $this->wrapper->post()->retrieve(
                    'new_block',
                    $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
                )
                : []
        );
        $this->unblockRoles($this->wrapper->post()->has('new_unblock')
            ? $this->wrapper->post()->retrieve(
                'new_unblock',
                $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
            )
            : []);

        $this->tpl->setOnScreenMessage('info', $this->lng->txt('settings_saved'));
        $this->ctrl->redirect($this, 'perm');
    }

    protected function unblockRoles($roles): void
    {
        foreach ($roles as $role) {
            // delete local policy
            ilLoggerFactory::getLogger('ac')->debug('Stop local policy for: ' . $role);
            $role_obj = ilObjectFactory::getInstanceByObjId($role);
            $role_obj->setParent($this->getCurrentObject()->getRefId());
            $role_obj->delete();

            $role_obj->changeExistingObjects(
                $this->getCurrentObject()->getRefId(),
                ilObjRole::MODE_UNPROTECTED_KEEP_LOCAL_POLICIES,
                ['all']
            );

            // finally set blocked status
            $this->rbacadmin->setBlockedStatus(
                $role,
                $this->getCurrentObject()->getRefId(),
                false
            );
        }
    }

    protected function blockRoles($roles): void
    {
        foreach ($roles as $role) {
            // Set assign to 'y' only if it is a local role
            $assign = $this->rbacreview->isAssignable($role, $this->getCurrentObject()->getRefId()) ? 'y' : 'n';

            // Delete permissions
            $this->rbacadmin->revokeSubtreePermissions($this->getCurrentObject()->getRefId(), $role);

            // Delete template permissions
            $this->rbacadmin->deleteSubtreeTemplates($this->getCurrentObject()->getRefId(), $role);

            $this->rbacadmin->assignRoleToFolder(
                $role,
                $this->getCurrentObject()->getRefId(),
                $assign
            );

            // finally set blocked status
            $this->rbacadmin->setBlockedStatus(
                $role,
                $this->getCurrentObject()->getRefId(),
                true
            );
        }
    }

    public static function hasContainerCommands(string $a_type): bool
    {
        global $DIC;

        $objDefinition = $DIC['objDefinition'];
        return $objDefinition->isContainer($a_type) && $a_type != 'root' && $a_type != 'adm' && $a_type != 'rolf';
    }

    protected function displayImportRoleForm(ilPropertyFormGUI $form = null): void
    {
        $this->tabs->clearTargets();

        if (!$form) {
            $form = $this->initImportForm();
        }
        $this->tpl->setContent($form->getHTML());
    }

    protected function doImportRole(): void
    {
        $form = $this->initImportForm();
        if ($form->checkInput()) {
            try {

                // For global roles set import id to parent of current ref_id (adm)
                $imp = new ilImport($this->getCurrentObject()->getRefId());
                $imp->getMapping()->addMapping(
                    'Services/AccessControl',
                    'rolf',
                    '0',
                    (string) $this->getCurrentObject()->getRefId()
                );

                $imp->importObject(
                    null,
                    $_FILES["importfile"]["tmp_name"],
                    $_FILES["importfile"]["name"],
                    'role'
                );
                $this->tpl->setOnScreenMessage('success', $this->lng->txt('rbac_role_imported'), true);
                $this->ctrl->redirect($this, 'perm');
                return;
            } catch (Exception $e) {
                $this->tpl->setOnScreenMessage('failure', $e->getMessage());
                $form->setValuesByPost();
                $this->displayImportRoleForm($form);
                return;
            }
        }
        $form->setValuesByPost();
        $this->tpl->setOnScreenMessage('failure', $this->lng->txt('err_check_input'));
        $this->displayImportRoleForm($form);
    }

    protected function initImportForm(): ilPropertyFormGUI
    {
        $form = new ilPropertyFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->setTitle($this->lng->txt('rbac_import_role'));
        $form->addCommandButton('doImportRole', $this->lng->txt('import'));
        $form->addCommandButton('perm', $this->lng->txt('cancel'));

        $zip = new ilFileInputGUI($this->lng->txt('import_file'), 'importfile');
        $zip->setRequired(true);
        $zip->setSuffixes(['zip']);
        $form->addItem($zip);

        return $form;
    }

    protected function initRoleForm(): ilPropertyFormGUI
    {
        $form = new ilPropertyFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->setTitle($this->lng->txt('role_new'));
        $form->addCommandButton('addrole', $this->lng->txt('role_new'));
        $form->addCommandButton('perm', $this->lng->txt('cancel'));

        $title = new ilTextInputGUI($this->lng->txt('title'), 'title');
        $title->setValidationRegexp('/^(?!il_).*$/');
        $title->setValidationFailureMessage($this->lng->txt('msg_role_reserved_prefix'));
        $title->setSize(40);
        $title->setMaxLength(70);
        $title->setRequired(true);
        $form->addItem($title);

        $desc = new ilTextAreaInputGUI($this->lng->txt('description'), 'desc');
        $desc->setCols(40);
        $desc->setRows(3);
        $form->addItem($desc);

        $pro = new ilCheckboxInputGUI($this->lng->txt('role_protect_permissions'), 'pro');
        $pro->setInfo($this->lng->txt('role_protect_permissions_desc'));
        $pro->setValue("1");
        $form->addItem($pro);

        $pd = new ilCheckboxInputGUI($this->lng->txt('rbac_add_recommended_content'), 'desktop');
        $pd->setInfo(
            str_replace(
                "%1",
                $this->getCurrentObject()->getTitle(),
                $this->lng->txt('rbac_add_recommended_content_info')
            )
        );
        $pd->setValue((string) 1);
        $form->addItem($pd);

        if (!$this->isInAdministration()) {
            $rights = new ilRadioGroupInputGUI($this->lng->txt("rbac_role_rights_copy"), 'rights');
            $option = new ilRadioOption($this->lng->txt("rbac_role_rights_copy_empty"), (string) 0);
            $rights->addOption($option);

            $parent_role_ids = $this->rbacreview->getParentRoleIds($this->gui_obj->getObject()->getRefId(), true);
            $ids = [];
            foreach (array_keys($parent_role_ids) as $id) {
                $ids[] = $id;
            }

            // Sort ids
            $sorted_ids = ilUtil::_sortIds($ids, 'object_data', 'type DESC,title', 'obj_id');

            $key = 0;
            foreach ($sorted_ids as $id) {
                $par = $parent_role_ids[$id];
                if ($par["obj_id"] != SYSTEM_ROLE_ID) {
                    $option = new ilRadioOption(
                        ($par["type"] == 'role' ? $this->lng->txt('obj_role') : $this->lng->txt(
                            'obj_rolt'
                        )) . ": " . ilObjRole::_getTranslation($par["title"]),
                        (string) $par["obj_id"]
                    );
                    $option->setInfo($par["desc"] ?? '');
                    $rights->addOption($option);
                }
                $key++;
            }
            $form->addItem($rights);
        }

        // Local policy only for containers
        if ($this->objDefinition->isContainer($this->getCurrentObject()->getType())) {
            $check = new ilCheckboxInputGui($this->lng->txt("rbac_role_rights_copy_change_existing"), 'existing');
            $check->setInfo($this->lng->txt('rbac_change_existing_objects_desc_new_role'));
            $form->addItem($check);
        }
        return $form;
    }

    protected function displayAddRoleForm(): void
    {
        $this->tabs->clearTargets();
        $form = $this->initRoleForm();
        $this->tpl->setContent($form->getHTML());
    }

    protected function addRole(): void
    {
        $form = $this->initRoleForm();
        if ($form->checkInput()) {
            $new_title = $form->getInput("title");

            $role = new ilObjRole();
            $role->setTitle($new_title);
            $role->setDescription($form->getInput('desc'));
            $role->create();

            $this->rbacadmin->assignRoleToFolder($role->getId(), $this->getCurrentObject()->getRefId());

            // protect
            $this->rbacadmin->setProtected(
                $this->getCurrentObject()->getRefId(),
                $role->getId(),
                $form->getInput('pro') ? 'y' : 'n'
            );

            // copy rights
            $right_id_to_copy = (int) $form->getInput("rights");
            if ($right_id_to_copy) {
                $parentRoles = $this->rbacreview->getParentRoleIds($this->getCurrentObject()->getRefId(), true);
                $this->rbacadmin->copyRoleTemplatePermissions(
                    $right_id_to_copy,
                    $parentRoles[$right_id_to_copy]["parent"],
                    $this->getCurrentObject()->getRefId(),
                    $role->getId(),
                    false
                );

                if ($form->getInput('existing')) {
                    if ($form->getInput('pro')) {
                        $role->changeExistingObjects(
                            $this->getCurrentObject()->getRefId(),
                            ilObjRole::MODE_PROTECTED_KEEP_LOCAL_POLICIES,
                            ['all']
                        );
                    } else {
                        $role->changeExistingObjects(
                            $this->getCurrentObject()->getRefId(),
                            ilObjRole::MODE_UNPROTECTED_KEEP_LOCAL_POLICIES,
                            ['all']
                        );
                    }
                }
            }

            // add to desktop items
            if ($form->getInput("desktop")) {
                $this->recommended_content_manager->addRoleRecommendation(
                    $role->getId(),
                    $this->getCurrentObject()->getRefId()
                );
            }

            $this->tpl->setOnScreenMessage('success', $this->lng->txt("role_added"), true);
            $this->ctrl->redirect($this, 'perm');
        } else {
            $form->setValuesByPost();
            $this->tpl->setContent($form->getHTML());
        }
    }

    protected function getModifiedBlockedSettings(): array
    {
        global $DIC;

        $rbacreview = $DIC['rbacreview'];

        $blocked_info['new_blocked'] = [];
        $blocked_info['new_unblocked'] = [];
        $blocked_info['num'] = 0;
        $visible_block = $this->wrapper->post()->has('visible_block')
            ? $this->wrapper->post()->retrieve(
                'visible_block',
                $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
            )
            : [];
        $block_post = $this->wrapper->post()->has('block')
            ? $this->wrapper->post()->retrieve(
                'block',
                $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
            )
            : [];


        foreach ($visible_block as $role => $one) {
            $blocked = $rbacreview->isBlockedAtPosition($role, $this->getCurrentObject()->getRefId());
            if (isset($block_post[$role]) && !$blocked) {
                $blocked_info['new_blocked'][] = $role;
                $blocked_info['num']++;
            }
            if (!isset($block_post[$role]) && $blocked) {
                $blocked_info['new_unblocked'][] = $role;
                $blocked_info['num']++;
            }
        }
        return $blocked_info;
    }

    //
    // OrgUnit Position Permissions
    //

    protected function permPositions(): void
    {
        $perm = self::CMD_PERM_POSITIONS;
        $this->__initSubTabs($perm);

        $ref_id = $this->getCurrentObject()->getRefId();
        $table = new ilOrgUnitPermissionTableGUI($this, $perm, $ref_id);
        $table->collectData();
        $this->tpl->setContent($table->getHTML());
    }

    protected function savePositionsPermissions(): void
    {
        $this->__initSubTabs(self::CMD_PERM_POSITIONS);

        $positions = ilOrgUnitPosition::getArray(null, 'id');
        $ref_id = $this->getCurrentObject()->getRefId();

        // handle local sets
        $local_post = $this->wrapper->post()->has('local')
            ? $this->wrapper->post()->retrieve(
                'local',
                $this->refinery->kindlyTo()->dictOf($this->refinery->kindlyTo()->int())
            )
            : [];

        foreach ($positions as $position_id) {
            if (isset($local_post[$position_id])) {
                ilOrgUnitPermissionQueries::findOrCreateSetForRefId($ref_id, (int) $position_id);
            } else {
                ilOrgUnitPermissionQueries::removeLocalSetForRefId($ref_id, (int) $position_id);
            }
        }

        $position_perm_post = $this->wrapper->post()->has('position_perm')
            ? $this->wrapper->post()->retrieve(
                'position_perm',
                $this->refinery->kindlyTo()->dictOf(
                    $this->refinery->kindlyTo()->dictOf(
                        $this->refinery->kindlyTo()->int()
                    )
                )
            )
            : [];
        ;
        if ($position_perm_post) {
            foreach ($position_perm_post as $position_id => $ops) {
                if (!isset($local_post[$position_id])) {
                    continue;
                }
                $ilOrgUnitPermission = ilOrgUnitPermissionQueries::getSetForRefId($ref_id, (int) $position_id);
                $new_ops = [];
                foreach ($ops as $op_id => $op) {
                    $new_ops[] = ilOrgUnitOperationQueries::findById($op_id);
                }
                $ilOrgUnitPermission->setOperations($new_ops);
                $ilOrgUnitPermission->save();
            }
        }
        $this->tpl->setOnScreenMessage('success', $this->lng->txt('settings_saved'), true);
        $this->ctrl->redirect($this, self::CMD_PERM_POSITIONS);
    }
}