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Merge pull request #127 from mateusz/refactor-access

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BUG Refactor the access checks and initial subsite redirections.
This commit is contained in:
Stig Lindqvist 2013-12-04 12:37:30 -08:00
commit a0f537142f
3 changed files with 74 additions and 44 deletions
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7
code/SubsiteXHRController.php
View File

@ -16,6 +16,13 @@ class SubsiteXHRController extends LeftAndMain {
return false;
}
/**
* Similar as above, but for the LeftAndMainSubsites - allow access if user allowed into the CMS at all.
*/
public function canAccess() {
if (Subsite::all_accessible_sites()->count()>0) return true;
}
public function getResponseNegotiator() {
$negotiator = parent::getResponseNegotiator();
$self = $this;

105
code/extensions/LeftAndMainSubsites.php
View File

@ -160,20 +160,45 @@ class LeftAndMainSubsites extends Extension {
}
/**
* Do some pre-flight checks if a subsite switch is needed.
* We redirect the user to something accessible if the current section/subsite is forbidden.
* 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')) return true;
// Check if we have access to current section on the current subsite.
$accessibleSites = $this->owner->sectionSites($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;
// Do not attempt to redirect for AJAX calls. The proper security checks are done on specific objects
// (by Subsite augmentations of Member and Group). Also the only good time to change the subsite in the CMS
// is upon initial load - otherwise we risk the internal state becoming mismatched with the interface.
if ($this->owner->request->isAjax()) {
return;
}
// FIRST, check if we need to change subsites due to the URL.
// Automatically redirect the session to appropriate subsite when requesting a record.
@ -182,7 +207,11 @@ class LeftAndMainSubsites extends Extension {
if($record && isset($record->SubsiteID) && is_numeric($record->SubsiteID)) {
if ($this->shouldChangeSubsite($this->owner->class, $record->SubsiteID, Subsite::currentSubsiteID())) {
// Update current subsite in session
Subsite::changeSubsite($record->SubsiteID);
//Redirect to clear the current page
return $this->owner->redirect('admin/');
}
}
@ -203,47 +232,41 @@ class LeftAndMainSubsites extends Extension {
// SECOND, check if we need to change subsites due to lack of permissions.
// If we can view current URL there is nothing to do.
if ($this->owner->canView()) {
return;
}
if (!$this->owner->canAccess()) {
// Admin can access everything, no point in checking.
$member = Member::currentUser();
if($member && Permission::checkMember($member, 'ADMIN')) return;
$member = Member::currentUser();
// Check if we have access to current section on the current subsite.
$accessibleSites = $this->owner->sectionSites($member);
if ($accessibleSites->count() && $accessibleSites->find('ID', Subsite::currentSubsiteID())) {
// Current section can be accessed on the current site, all good.
return;
}
// 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) {
// If the 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.
$this->owner->redirect(singleton($candidate->controller)->Link());
return;
$accessibleSites = singleton($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());
}
}
}
}
// Finally, if no section is available, move to any other permitted subsite.
foreach($menu as $candidate) {
if($candidate->controller) {
$accessibleSites = singleton($candidate->controller)->sectionSites(true, 'Main site', $member);
if ($accessibleSites->count()) {
Subsite::changeSubsite($accessibleSites->First()->ID);
$this->owner->redirect(singleton($candidate->controller)->Link());
return;
// 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($this->owner);
}
// Current site is accessible. Allow through.
return;
}
function augmentNewSiteTreeItem(&$item) {

6
tests/SubsiteAdminFunctionalTest.php
View File

@ -69,17 +69,17 @@ class SubsiteAdminFunctionalTest extends FunctionalTest {
Subsite::changeSubsite(0);
$this->getAndFollowAll("admin/pages/edit/show/$subsite1Home->ID");
$this->assertEquals(Subsite::currentSubsiteID(), $subsite1Home->SubsiteID, 'Loading an object switches the subsite');
$this->assertRegExp("#^admin/pages/edit/show/$subsite1Home->ID.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
$this->assertRegExp("#^admin/pages.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
Config::inst()->update('CMSPageEditController', 'treats_subsite_0_as_global', true);
Subsite::changeSubsite(0);
$this->getAndFollowAll("admin/pages/edit/show/$subsite1Home->ID");
$this->assertEquals(Subsite::currentSubsiteID(), $subsite1Home->SubsiteID, 'Loading a non-main-site object still switches the subsite if configured with treats_subsite_0_as_global');
$this->assertRegExp("#^admin/pages/edit/show/$subsite1Home->ID.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
$this->assertRegExp("#^admin/pages.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
$this->getAndFollowAll("admin/pages/edit/show/$mainSubsitePage->ID");
$this->assertNotEquals(Subsite::currentSubsiteID(), $mainSubsitePage->SubsiteID, 'Loading a main-site object does not change the subsite if configured with treats_subsite_0_as_global');
$this->assertRegExp("#^admin/pages/edit/show/$mainSubsitePage->ID.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
$this->assertRegExp("#^admin/pages.*#", $this->mainSession->lastUrl(), 'Lands on the correct section');
Config::inst()->unnest();
}