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application/Espo/Classes/Acl/Attachment/AccessChecker.php

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+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Classes\Acl\Attachment;
+
+use Espo\Core\Name\Field;
+use Espo\Entities\Attachment;
+use Espo\Entities\Note;
+use Espo\Entities\Settings;
+use Espo\Entities\User;
+use Espo\ORM\Entity;
+use Espo\Core\Acl\AccessEntityCREDChecker;
+use Espo\Core\Acl\DefaultAccessChecker;
+use Espo\Core\Acl\ScopeData;
+use Espo\Core\Acl\Traits\DefaultAccessCheckerDependency;
+use Espo\Core\AclManager;
+use Espo\Core\ORM\EntityManager;
+
+/**
+ * @implements AccessEntityCREDChecker<Attachment>
+ */
+class AccessChecker implements AccessEntityCREDChecker
+{
+    use DefaultAccessCheckerDependency;
+
+    public function __construct(
+        DefaultAccessChecker $defaultAccessChecker,
+        private AclManager $aclManager,
+        private EntityManager $entityManager
+    ) {
+        $this->defaultAccessChecker = $defaultAccessChecker;
+    }
+
+    public function checkEntityRead(User $user, Entity $entity, ScopeData $data): bool
+    {
+        if ($entity->getParentType() === Settings::ENTITY_TYPE) {
+            // Allow the logo.
+            return true;
+        }
+
+        $parent = null;
+
+        $parentType = $entity->getParentType();
+        $parentId = $entity->getParent()?->getId();
+
+        $relatedType = $entity->getRelatedType();
+        $relatedId = $entity->getRelated()?->getId();
+
+        if ($parentId && $parentType) {
+            $parent = $this->entityManager->getEntityById($parentType, $parentId);
+        } else if ($relatedId && $relatedType) {
+            $parent = $this->entityManager->getEntityById($relatedType, $relatedId);
+        }
+
+        if (!$parent) {
+            if ($this->defaultAccessChecker->checkEntityRead($user, $entity, $data)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        if ($parent->getEntityType() === Note::ENTITY_TYPE) {
+            /** @var Note $parent */
+            $result = $this->checkEntityReadNoteParent($user, $parent);
+
+            if ($result !== null) {
+                return $result;
+            }
+        } else if ($this->aclManager->checkEntity($user, $parent)) {
+            if (
+                $entity->getTargetField() &&
+                !$this->aclManager->checkField($user, $parent->getEntityType(), $entity->getTargetField())
+            ) {
+                return false;
+            }
+
+            return true;
+        }
+
+        if ($this->defaultAccessChecker->checkEntityRead($user, $entity, $data)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    private function checkEntityReadNoteParent(User $user, Note $note): ?bool
+    {
+        if ($note->getTargetType() === Note::TARGET_TEAMS) {
+            $intersect = array_intersect(
+                $note->getLinkMultipleIdList(Field::TEAMS),
+                $user->getLinkMultipleIdList(Field::TEAMS)
+            );
+
+            if (count($intersect)) {
+                return true;
+            }
+
+            return null;
+        }
+
+        if ($note->getTargetType() === Note::TARGET_USERS) {
+            $isRelated = $this->entityManager
+                ->getRDBRepository(Note::ENTITY_TYPE)
+                ->getRelation($note, 'users')
+                ->isRelated($user);
+
+            if ($isRelated) {
+                return true;
+            }
+
+            return null;
+        }
+
+        if ($note->getTargetType() === Note::TARGET_ALL) {
+            return true;
+        }
+
+        if (!$note->getParentId() || !$note->getParentType()) {
+            return null;
+        }
+
+        $parent = $this->entityManager->getEntityById($note->getParentType(), $note->getParentId());
+
+        if ($parent && $this->aclManager->checkEntity($user, $parent)) {
+            return true;
+        }
+
+        return null;
+    }
+}