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<?php |
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/** |
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* @copyright Copyright (C) eZ Systems AS. All rights reserved. |
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* @license For full copyright and license information view LICENSE file distributed with this source code. |
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*/ |
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namespace eZ\Publish\Core\Repository\Permission; |
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use eZ\Publish\API\Repository\PermissionCriterionResolver as APIPermissionCriterionResolver; |
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use eZ\Publish\API\Repository\Values\Content\Query\Criterion\LogicalAnd; |
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use eZ\Publish\API\Repository\Values\Content\Query\Criterion\LogicalOr; |
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use eZ\Publish\API\Repository\Values\User\Limitation; |
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use eZ\Publish\API\Repository\PermissionResolver as PermissionResolverInterface; |
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use eZ\Publish\Core\Repository\Helper\LimitationService; |
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use RuntimeException; |
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/** |
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* Implementation of Permissions Criterion Resolver. |
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*/ |
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class PermissionCriterionResolver implements APIPermissionCriterionResolver |
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{ |
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/** |
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* @var \eZ\Publish\API\Repository\PermissionResolver |
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*/ |
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private $permissionResolver; |
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/** |
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* @var \eZ\Publish\Core\Repository\Helper\LimitationService |
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*/ |
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private $limitationService; |
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/** |
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* Constructor. |
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* |
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* @param \eZ\Publish\API\Repository\PermissionResolver $permissionResolver |
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* @param \eZ\Publish\Core\Repository\Helper\LimitationService $limitationService |
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*/ |
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public function __construct( |
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PermissionResolverInterface $permissionResolver, |
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LimitationService $limitationService |
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) { |
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$this->permissionResolver = $permissionResolver; |
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$this->limitationService = $limitationService; |
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} |
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/** |
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* Get content-read Permission criteria if needed and return false if no access at all. |
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* |
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* @uses \eZ\Publish\API\Repository\PermissionResolver::getCurrentUserReference() |
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* @uses \eZ\Publish\API\Repository\PermissionResolver::hasAccess() |
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* |
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* @throws \RuntimeException If empty array of limitations are provided from hasAccess() |
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* |
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* @param string $module |
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* @param string $function |
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* |
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* @return bool|\eZ\Publish\API\Repository\Values\Content\Query\Criterion |
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*/ |
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public function getPermissionsCriterion($module = 'content', $function = 'read') |
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{ |
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$permissionSets = $this->permissionResolver->hasAccess($module, $function); |
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if (is_bool($permissionSets)) { |
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return $permissionSets; |
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} |
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if (empty($permissionSets)) { |
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throw new RuntimeException("Got an empty array of limitations from hasAccess( '{$module}', '{$function}' )"); |
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} |
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/* |
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* RoleAssignment is a OR condition, so is policy, while limitations is a AND condition |
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* |
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* If RoleAssignment has limitation then policy OR conditions are wrapped in a AND condition with the |
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* role limitation, otherwise it will be merged into RoleAssignment's OR condition. |
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*/ |
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$currentUserRef = $this->permissionResolver->getCurrentUserReference(); |
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$roleAssignmentOrCriteria = []; |
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foreach ($permissionSets as $permissionSet) { |
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// $permissionSet is a RoleAssignment, but in the form of role limitation & role policies hash |
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$policyOrCriteria = []; |
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/** |
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* @var \eZ\Publish\API\Repository\Values\User\Policy |
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*/ |
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foreach ($permissionSet['policies'] as $policy) { |
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$limitations = $policy->getLimitations(); |
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if ($limitations === '*' || empty($limitations)) { |
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// Given policy gives full access, optimize away all role policies (but not role limitation if any) |
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// This should be optimized on create/update of Roles, however we keep this here for bc with older data |
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$policyOrCriteria = []; |
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break; |
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} |
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$limitationsAndCriteria = []; |
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foreach ($limitations as $limitation) { |
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$type = $this->limitationService->getLimitationType($limitation->getIdentifier()); |
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$limitationsAndCriteria[] = $type->getCriterion($limitation, $currentUserRef); |
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} |
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$policyOrCriteria[] = isset($limitationsAndCriteria[1]) ? |
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new LogicalAnd($limitationsAndCriteria) : |
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$limitationsAndCriteria[0]; |
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} |
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/** |
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* Apply role limitations if there is one. |
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* |
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* @var \eZ\Publish\API\Repository\Values\User\Limitation[] |
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*/ |
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if ($permissionSet['limitation'] instanceof Limitation) { |
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// We need to match both the limitation AND *one* of the policies, aka; roleLimit AND policies(OR) |
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$type = $this->limitationService->getLimitationType($permissionSet['limitation']->getIdentifier()); |
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if (!empty($policyOrCriteria)) { |
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$roleAssignmentOrCriteria[] = new LogicalAnd( |
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[ |
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$type->getCriterion($permissionSet['limitation'], $currentUserRef), |
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isset($policyOrCriteria[1]) ? new LogicalOr($policyOrCriteria) : $policyOrCriteria[0], |
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] |
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); |
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} else { |
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$roleAssignmentOrCriteria[] = $type->getCriterion($permissionSet['limitation'], $currentUserRef); |
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} |
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} elseif (!empty($policyOrCriteria)) { |
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// Otherwise merge $policyOrCriteria into $roleAssignmentOrCriteria |
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// There is no role limitation, so any of the policies can globally match in the returned OR criteria |
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$roleAssignmentOrCriteria = empty($roleAssignmentOrCriteria) ? |
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$policyOrCriteria : |
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array_merge($roleAssignmentOrCriteria, $policyOrCriteria); |
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} |
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} |
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if (empty($roleAssignmentOrCriteria)) { |
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return false; |
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} |
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return isset($roleAssignmentOrCriteria[1]) ? |
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new LogicalOr($roleAssignmentOrCriteria) : |
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$roleAssignmentOrCriteria[0]; |
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} |
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} |
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ezsystems /
ezpublish-kernel
