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lib/pkp/classes/security/authorization/internal/RepresentationRequiredPolicy.php

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+<?php
+/**
+ * @file classes/security/authorization/internal/RepresentationRequiredPolicy.php
+ *
+ * Copyright (c) 2014-2021 Simon Fraser University
+ * Copyright (c) 2000-2021 John Willinsky
+ * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
+ *
+ * @class RepresentationRequiredPolicy
+ *
+ * @ingroup security_authorization_internal
+ *
+ * @brief Policy that ensures that the request contains a valid representation.
+ */
+
+namespace PKP\security\authorization\internal;
+
+use APP\core\Application;
+use APP\publication\Publication;
+use APP\submission\Submission;
+use PKP\core\PKPRequest;
+use PKP\security\authorization\AuthorizationPolicy;
+use PKP\security\authorization\DataObjectRequiredPolicy;
+use PKP\submission\Representation;
+
+class RepresentationRequiredPolicy extends DataObjectRequiredPolicy
+{
+    /**
+     * Constructor
+     *
+     * @param PKPRequest $request
+     * @param array $args request parameters
+     * @param null|mixed $operations
+     */
+    public function __construct($request, &$args, $parameterName = 'representationId', $operations = null)
+    {
+        parent::__construct($request, $args, $parameterName, 'user.authorization.invalidRepresentation', $operations);
+    }
+
+    //
+    // Implement template methods from AuthorizationPolicy
+    //
+    /**
+     * @see DataObjectRequiredPolicy::dataObjectEffect()
+     */
+    public function dataObjectEffect()
+    {
+        $representationId = (int)$this->getDataObjectId();
+        if (!$representationId) {
+            return AuthorizationPolicy::AUTHORIZATION_DENY;
+        }
+
+        // Need a valid submission in request.
+        $submission = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION);
+        if (!$submission instanceof Submission) {
+            return AuthorizationPolicy::AUTHORIZATION_DENY;
+        }
+
+        // Need a valid publication in request
+        $publication = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_PUBLICATION);
+        if (!$publication instanceof Publication) {
+            return AuthorizationPolicy::AUTHORIZATION_DENY;
+        }
+
+        // Make sure the representation belongs to the submission.
+        $representationDao = Application::getRepresentationDAO();
+        $representation = $representationDao->getById($representationId, $publication->getId());
+        if (!$representation instanceof Representation) {
+            return AuthorizationPolicy::AUTHORIZATION_DENY;
+        }
+
+        // Save the representation to the authorization context.
+        $this->addAuthorizedContextObject(Application::ASSOC_TYPE_REPRESENTATION, $representation);
+        return AuthorizationPolicy::AUTHORIZATION_PERMIT;
+    }
+}
+
+if (!PKP_STRICT_MODE) {
+    class_alias('\PKP\security\authorization\internal\RepresentationRequiredPolicy', '\RepresentationRequiredPolicy');
+}