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[stable27] Forbid tagging readonly files #44299

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merged 3 commits into from
Mar 21, 2024
Merged

[stable27] Forbid tagging readonly files #44299

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a815f69
fix(systemtags): Forbid tagging of readonly files
come-nc Feb 27, 2024
a800a68
chore: Break closure call on two lines to make it readable
come-nc Mar 4, 2024
3b4d5ea
fix(dav): Add missing use for OCP\Constants
come-nc Mar 19, 2024
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65 changes: 11 additions & 54 deletions apps/dav/lib/SystemTag/SystemTagMappingNode.php
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Original file line number Diff line number Diff line change
Expand Up @@ -37,62 +37,15 @@
* Mapping node for system tag to object id
*/
class SystemTagMappingNode implements \Sabre\DAV\INode {
/**
* @var ISystemTag
*/
protected $tag;

/**
* @var string
*/
private $objectId;

/**
* @var string
*/
private $objectType;

/**
* User
*
* @var IUser
*/
protected $user;

/**
* @var ISystemTagManager
*/
protected $tagManager;

/**
* @var ISystemTagObjectMapper
*/
private $tagMapper;

/**
* Sets up the node, expects a full path name
*
* @param ISystemTag $tag system tag
* @param string $objectId
* @param string $objectType
* @param IUser $user user
* @param ISystemTagManager $tagManager
* @param ISystemTagObjectMapper $tagMapper
*/
public function __construct(
ISystemTag $tag,
$objectId,
$objectType,
IUser $user,
ISystemTagManager $tagManager,
ISystemTagObjectMapper $tagMapper
private ISystemTag $tag,
private string $objectId,
private string $objectType,
private IUser $user,
private ISystemTagManager $tagManager,
private ISystemTagObjectMapper $tagMapper,
private \Closure $childWriteAccessFunction,
) {
$this->tag = $tag;
$this->objectId = $objectId;
$this->objectType = $objectType;
$this->user = $user;
$this->tagManager = $tagManager;
$this->tagMapper = $tagMapper;
}

/**
Expand Down Expand Up @@ -166,6 +119,10 @@ public function delete() {
if (!$this->tagManager->canUserAssignTag($this->tag, $this->user)) {
throw new Forbidden('No permission to unassign tag ' . $this->tag->getId());
}
$writeAccessFunction = $this->childWriteAccessFunction;
if (!$writeAccessFunction($this->objectId)) {
throw new Forbidden('No permission to unassign tag to ' . $this->objectId);
}
$this->tagMapper->unassignTags($this->objectId, $this->objectType, $this->tag->getId());
} catch (TagNotFoundException $e) {
// can happen if concurrent deletion occurred
Expand Down
62 changes: 12 additions & 50 deletions apps/dav/lib/SystemTag/SystemTagsObjectMappingCollection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -40,56 +40,14 @@
* Collection containing tags by object id
*/
class SystemTagsObjectMappingCollection implements ICollection {

/**
* @var string
*/
private $objectId;

/**
* @var string
*/
private $objectType;

/**
* @var ISystemTagManager
*/
private $tagManager;

/**
* @var ISystemTagObjectMapper
*/
private $tagMapper;

/**
* User
*
* @var IUser
*/
private $user;


/**
* Constructor
*
* @param string $objectId object id
* @param string $objectType object type
* @param IUser $user user
* @param ISystemTagManager $tagManager tag manager
* @param ISystemTagObjectMapper $tagMapper tag mapper
*/
public function __construct(
$objectId,
$objectType,
IUser $user,
ISystemTagManager $tagManager,
ISystemTagObjectMapper $tagMapper
private string $objectId,
private string $objectType,
private IUser $user,
private ISystemTagManager $tagManager,
private ISystemTagObjectMapper $tagMapper,
protected \Closure $childWriteAccessFunction,
) {
$this->tagManager = $tagManager;
$this->tagMapper = $tagMapper;
$this->objectId = $objectId;
$this->objectType = $objectType;
$this->user = $user;
}

/**
Expand All @@ -106,7 +64,10 @@ public function createFile($name, $data = null) {
if (!$this->tagManager->canUserAssignTag($tag, $this->user)) {
throw new Forbidden('No permission to assign tag ' . $tagId);
}

$writeAccessFunction = $this->childWriteAccessFunction;
if (!$writeAccessFunction($this->objectId)) {
throw new Forbidden('No permission to assign tag to ' . $this->objectId);
}
$this->tagMapper->assignTags($this->objectId, $this->objectType, $tagId);
} catch (TagNotFoundException $e) {
throw new PreconditionFailed('Tag with id ' . $tagId . ' does not exist, cannot assign');
Expand Down Expand Up @@ -224,7 +185,8 @@ private function makeNode(ISystemTag $tag) {
$this->objectType,
$this->user,
$this->tagManager,
$this->tagMapper
$this->tagMapper,
$this->childWriteAccessFunction,
);
}
}
63 changes: 9 additions & 54 deletions apps/dav/lib/SystemTag/SystemTagsObjectTypeCollection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -38,61 +38,15 @@
* Collection containing object ids by object type
*/
class SystemTagsObjectTypeCollection implements ICollection {

/**
* @var string
*/
private $objectType;

/**
* @var ISystemTagManager
*/
private $tagManager;

/**
* @var ISystemTagObjectMapper
*/
private $tagMapper;

/**
* @var IGroupManager
*/
private $groupManager;

/**
* @var IUserSession
*/
private $userSession;

/**
* @var \Closure
**/
protected $childExistsFunction;

/**
* Constructor
*
* @param string $objectType object type
* @param ISystemTagManager $tagManager
* @param ISystemTagObjectMapper $tagMapper
* @param IUserSession $userSession
* @param IGroupManager $groupManager
* @param \Closure $childExistsFunction
*/
public function __construct(
$objectType,
ISystemTagManager $tagManager,
ISystemTagObjectMapper $tagMapper,
IUserSession $userSession,
IGroupManager $groupManager,
\Closure $childExistsFunction
private string $objectType,
private ISystemTagManager $tagManager,
private ISystemTagObjectMapper $tagMapper,
private IUserSession $userSession,
private IGroupManager $groupManager,
protected \Closure $childExistsFunction,
protected \Closure $childWriteAccessFunction,
) {
$this->tagManager = $tagManager;
$this->tagMapper = $tagMapper;
$this->objectType = $objectType;
$this->userSession = $userSession;
$this->groupManager = $groupManager;
$this->childExistsFunction = $childExistsFunction;
}

/**
Expand Down Expand Up @@ -134,7 +88,8 @@ public function getChild($objectName) {
$this->objectType,
$this->userSession->getUser(),
$this->tagManager,
$this->tagMapper
$this->tagMapper,
$this->childWriteAccessFunction,
);
}

Expand Down
17 changes: 14 additions & 3 deletions apps/dav/lib/SystemTag/SystemTagsRelationsCollection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
*/
namespace OCA\DAV\SystemTag;

use OCP\Constants;
use OCP\IGroupManager;
use OCP\IUserSession;
use OCP\SystemTag\ISystemTagManager;
Expand Down Expand Up @@ -60,10 +61,19 @@
$tagMapper,
$userSession,
$groupManager,
function ($name) {
function ($name): bool {

Check notice

Code scanning / Psalm

MissingClosureParamType Note

Parameter $name has no provided type
$nodes = \OC::$server->getUserFolder()->getById((int)$name);
return !empty($nodes);
}
},
function ($name): bool {

Check notice

Code scanning / Psalm

MissingClosureParamType Note

Parameter $name has no provided type
$nodes = \OC::$server->getUserFolder()->getById((int)$name);

Check notice

Code scanning / Psalm

DeprecatedMethod Note

The method OC\Server::getUserFolder has been marked as deprecated

Check notice

Code scanning / Psalm

PossiblyNullReference Note

Cannot call method getById on possibly null value
foreach ($nodes as $node) {
if (($node->getPermissions() & Constants::PERMISSION_UPDATE) === Constants::PERMISSION_UPDATE) {
return true;
}
}
return false;
},
),
];

Expand All @@ -77,7 +87,8 @@
$tagMapper,
$userSession,
$groupManager,
$entityExistsFunction
$entityExistsFunction,
fn ($name) => true,

Check notice

Code scanning / Psalm

MissingClosureParamType Note

Parameter $name has no provided type
);
}

Expand Down
48 changes: 28 additions & 20 deletions apps/dav/tests/unit/SystemTag/SystemTagMappingNodeTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -33,21 +33,9 @@
use OCP\SystemTag\TagNotFoundException;

class SystemTagMappingNodeTest extends \Test\TestCase {

/**
* @var \OCP\SystemTag\ISystemTagManager
*/
private $tagManager;

/**
* @var \OCP\SystemTag\ISystemTagObjectMapper
*/
private $tagMapper;

/**
* @var \OCP\IUser
*/
private $user;
private ISystemTagManager $tagManager;
private ISystemTagObjectMapper $tagMapper;
private IUser $user;

protected function setUp(): void {
parent::setUp();
Expand All @@ -60,7 +48,7 @@ protected function setUp(): void {
->getMock();
}

public function getMappingNode($tag = null) {
public function getMappingNode($tag = null, array $writableNodeIds = []) {
if ($tag === null) {
$tag = new SystemTag(1, 'Test', true, true);
}
Expand All @@ -70,7 +58,8 @@ public function getMappingNode($tag = null) {
'files',
$this->user,
$this->tagManager,
$this->tagMapper
$this->tagMapper,
fn ($id): bool => in_array($id, $writableNodeIds),
);
}

Expand All @@ -84,7 +73,7 @@ public function testGetters(): void {
}

public function testDeleteTag(): void {
$node = $this->getMappingNode();
$node = $this->getMappingNode(null, [123]);
$this->tagManager->expects($this->once())
->method('canUserSeeTag')
->with($node->getSystemTag())
Expand All @@ -102,6 +91,25 @@ public function testDeleteTag(): void {
$node->delete();
}

public function testDeleteTagForbidden(): void {
$node = $this->getMappingNode();
$this->tagManager->expects($this->once())
->method('canUserSeeTag')
->with($node->getSystemTag())
->willReturn(true);
$this->tagManager->expects($this->once())
->method('canUserAssignTag')
->with($node->getSystemTag())
->willReturn(true);
$this->tagManager->expects($this->never())
->method('deleteTags');
$this->tagMapper->expects($this->never())
->method('unassignTags');

$this->expectException(\Sabre\DAV\Exception\Forbidden::class);
$node->delete();
}

public function tagNodeDeleteProviderPermissionException() {
return [
[
Expand Down Expand Up @@ -144,7 +152,7 @@ public function testDeleteTagExpectedException(ISystemTag $tag, $expectedExcepti
$this->assertInstanceOf($expectedException, $thrown);
}


public function testDeleteTagNotFound(): void {
$this->expectException(\Sabre\DAV\Exception\NotFound::class);

Expand All @@ -164,6 +172,6 @@ public function testDeleteTagNotFound(): void {
->with(123, 'files', 1)
->will($this->throwException(new TagNotFoundException()));

$this->getMappingNode($tag)->delete();
$this->getMappingNode($tag, [123])->delete();
}
}
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