silverstripe-subsites/code/extensions/LeftAndMainSubsites.php

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<?php
/**
* Decorator designed to add subsites support to LeftAndMain
*
* @package subsites
*/
class LeftAndMainSubsites extends Extension {
private static $allowed_actions = array('CopyToSubsite');
/**
* Normally SubsiteID=0 on a DataObject means it is only accessible from the special "main site".
* However in some situations SubsiteID=0 will be understood as a "globally accessible" object in which
* case this property is set to true (i.e. in AssetAdmin).
*/
private static $treats_subsite_0_as_global = false;
function init() {
Requirements::css('subsites/css/LeftAndMain_Subsites.css');
Requirements::javascript('subsites/javascript/LeftAndMain_Subsites.js');
Requirements::javascript('subsites/javascript/VirtualPage_Subsites.js');
}
/**
* Set the title of the CMS tree
*/
function getCMSTreeTitle() {
$subsite = Subsite::currentSubSite();
return $subsite ? Convert::raw2xml($subsite->Title) : _t('LeftAndMain.SITECONTENTLEFT');
}
function updatePageOptions(&$fields) {
$fields->push(new HiddenField('SubsiteID', 'SubsiteID', Subsite::currentSubsiteID()));
}
/**
* Find all subsites accessible for current user on this controller.
*
* @return ArrayList of {@link Subsite} instances.
*/
function sectionSites($includeMainSite = true, $mainSiteTitle = "Main site", $member = null) {
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if($mainSiteTitle == 'Main site') {
$mainSiteTitle = _t('Subsites.MainSiteTitle', 'Main site');
}
// Rationalise member arguments
if(!$member) $member = Member::currentUser();
if(!$member) return new ArrayList();
if(!is_object($member)) $member = DataObject::get_by_id('Member', $member);
// Collect permissions - honour the LeftAndMain::required_permission_codes, current model requires
// us to check if the user satisfies ALL permissions. Code partly copied from LeftAndMain::canView.
$codes = array();
$extraCodes = Config::inst()->get($this->owner->class, 'required_permission_codes');
if($extraCodes !== false) {
if($extraCodes) $codes = array_merge($codes, (array)$extraCodes);
else $codes[] = "CMS_ACCESS_{$this->owner->class}";
} else {
// Check overriden - all subsites accessible.
return Subsite::all_sites();
}
// Find subsites satisfying all permissions for the Member.
$codesPerSite = array();
$sitesArray = array();
foreach ($codes as $code) {
$sites = Subsite::accessible_sites($code, $includeMainSite, $mainSiteTitle, $member);
foreach ($sites as $site) {
// Build the structure for checking how many codes match.
$codesPerSite[$site->ID][$code] = true;
// Retain Subsite objects for later.
$sitesArray[$site->ID] = $site;
}
}
// Find sites that satisfy all codes conjuncitvely.
$accessibleSites = new ArrayList();
foreach ($codesPerSite as $siteID => $siteCodes) {
if (count($siteCodes)==count($codes)) {
$accessibleSites->push($sitesArray[$siteID]);
}
}
return $accessibleSites;
}
/*
* Returns a list of the subsites accessible to the current user.
* It's enough for any section to be accessible for the section to be included.
*/
public function Subsites() {
return Subsite::all_accessible_sites();
}
/*
* Generates a list of subsites with the data needed to
* produce a dropdown site switcher
* @return ArrayList
*/
public function ListSubsites(){
$list = $this->Subsites();
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$currentSubsiteID = Subsite::currentSubsiteID();
if($list == null || $list->Count() == 1 && $list->First()->DefaultSite == true){
return false;
}
Requirements::javascript('subsites/javascript/LeftAndMain_Subsites.js');
$output = new ArrayList();
foreach($list as $subsite) {
$CurrentState = $subsite->ID == $currentSubsiteID ? 'selected' : '';
$output->push(new ArrayData(array(
'CurrentState' => $CurrentState,
'ID' => $subsite->ID,
'Title' => Convert::raw2xml($subsite->Title)
)));
}
return $output;
}
public function alternateMenuDisplayCheck($controllerName) {
if(!class_exists($controllerName)){
return false;
}
// Check subsite support.
if(Subsite::currentSubsiteID() == 0){
// Main site always supports everything.
return true;
} else {
$controller = singleton($controllerName);
if($controller->hasMethod('subsiteCMSShowInMenu') && $controller->subsiteCMSShowInMenu()){
return true;
}
}
// It's not necessary to check access permissions here. Framework calls canView on the controller,
// which in turn uses the Permission API which is augmented by our GroupSubsites.
return false;
}
public function CanAddSubsites() {
return Permission::check("ADMIN", "any", null, "all");
}
/**
* Helper for testing if the subsite should be adjusted.
*/
public function shouldChangeSubsite($adminClass, $recordSubsiteID, $currentSubsiteID) {
if (Config::inst()->get($adminClass, 'treats_subsite_0_as_global') && $recordSubsiteID==0) return false;
if ($recordSubsiteID!=$currentSubsiteID) return true;
return false;
}
/**
* Check if the current controller is accessible for this user on this subsite.
*/
function canAccess() {
// Admin can access everything, no point in checking.
$member = Member::currentUser();
if($member &&
(
Permission::checkMember($member, 'ADMIN') || // 'Full administrative rights' in SecurityAdmin
Permission::checkMember($member, 'CMS_ACCESS_LeftAndMain') // 'Access to all CMS sections' in SecurityAdmin
)) {
return true;
}
// Check if we have access to current section on the current subsite.
$accessibleSites = $this->owner->sectionSites(true, "Main site", $member);
if ($accessibleSites->count() && $accessibleSites->find('ID', Subsite::currentSubsiteID())) {
// Current section can be accessed on the current site, all good.
return true;
}
return false;
}
/**
* Prevent accessing disallowed resources. This happens after onBeforeInit has executed,
* so all redirections should've already taken place.
*/
public function alternateAccessCheck() {
return $this->owner->canAccess();
}
/**
* Redirect the user to something accessible if the current section/subsite is forbidden.
*
* This is done via onBeforeInit as it needs to be done before the LeftAndMain::init has a
* chance to forbids access via alternateAccessCheck.
*
* If we need to change the subsite we force the redirection to /admin/ so the frontend is
* fully re-synchronised with the internal session. This is better than risking some panels
* showing data from another subsite.
*/
public function onBeforeInit() {
// We are accessing the CMS, so we need to let Subsites know we will be using the session.
Subsite::$use_session_subsiteid = true;
// FIRST, check if we need to change subsites due to the URL.
// Catch forced subsite changes that need to cause CMS reloads.
if(isset($_GET['SubsiteID'])) {
// Clear current page when subsite changes (or is set for the first time)
if(!Session::get('SubsiteID') || $_GET['SubsiteID'] != Session::get('SubsiteID')) {
Session::clear("{$this->owner->class}.currentPage");
}
// Update current subsite in session
Subsite::changeSubsite($_GET['SubsiteID']);
//Redirect to clear the current page
if ($this->owner->canView(Member::currentUser())) {
//Redirect to clear the current page
return $this->owner->redirect($this->owner->Link());
}
//Redirect to the default CMS section
return $this->owner->redirect('admin/');
}
// Automatically redirect the session to appropriate subsite when requesting a record.
// This is needed to properly initialise the session in situations where someone opens the CMS via a link.
$record = $this->owner->currentPage();
if($record && isset($record->SubsiteID) && is_numeric($record->SubsiteID) && isset($this->owner->urlParams['ID'])) {
if ($this->shouldChangeSubsite($this->owner->class, $record->SubsiteID, Subsite::currentSubsiteID())) {
// Update current subsite in session
Subsite::changeSubsite($record->SubsiteID);
if ($this->owner->canView(Member::currentUser())) {
//Redirect to clear the current page
return $this->owner->redirect($this->owner->Link());
}
//Redirect to the default CMS section
return $this->owner->redirect('admin/');
}
}
// SECOND, check if we need to change subsites due to lack of permissions.
if (!$this->owner->canAccess()) {
$member = Member::currentUser();
// Current section is not accessible, try at least to stick to the same subsite.
$menu = CMSMenu::get_menu_items();
foreach($menu as $candidate) {
if($candidate->controller && $candidate->controller!=$this->owner->class) {
$accessibleSites = singleton($candidate->controller)->sectionSites(true, 'Main site', $member);
if ($accessibleSites->count() && $accessibleSites->find('ID', Subsite::currentSubsiteID())) {
// Section is accessible, redirect there.
return $this->owner->redirect(singleton($candidate->controller)->Link());
}
}
}
// If no section is available, look for other accessible subsites.
foreach($menu as $candidate) {
if($candidate->controller) {
$accessibleSites = singleton($candidate->controller)->sectionSites(true, 'Main site', $member);
if ($accessibleSites->count()) {
Subsite::changeSubsite($accessibleSites->First()->ID);
return $this->owner->redirect(singleton($candidate->controller)->Link());
}
}
}
// We have not found any accessible section or subsite. User should be denied access.
return Security::permissionFailure($this->owner);
}
// Current site is accessible. Allow through.
return;
}
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function augmentNewSiteTreeItem(&$item) {
$item->SubsiteID = isset($_POST['SubsiteID']) ? $_POST['SubsiteID'] : Subsite::currentSubsiteID();
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}
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function onAfterSave($record) {
if($record->hasMethod('NormalRelated') && ($record->NormalRelated() || $record->ReverseRelated())) {
$this->owner->response->addHeader('X-Status', rawurlencode(_t('LeftAndMainSubsites.Saved', 'Saved, please update related pages.')));
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}
}
function copytosubsite($data, $form) {
$page = DataObject::get_by_id('SiteTree', $data['ID']);
$subsite = DataObject::get_by_id('Subsite', $data['CopyToSubsiteID']);
$newPage = $page->duplicateToSubsite($subsite->ID, true);
$response = $this->owner->getResponse();
$response->addHeader('X-Reload', true);
return $this->owner->redirect(Controller::join_links($this->owner->Link('show'), $newPage->ID));
}
}