snapshot of https://github.com/espocrm/espocrm.git (master, 2026-09-18; blobs > 131072B omitted)

application/Espo/Tools/OAuthServer/League/AuthorizationRequestStorage.php

@@ -0,0 +1,91 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League;
+
+use Espo\Core\Session\Session;
+use Espo\Tools\OAuthServer\League\Entities\AuthCodeEntity;
+use Espo\Tools\OAuthServer\League\Entities\ClientEntity;
+use Espo\Tools\OAuthServer\League\Entities\ScopeEntity;
+use InvalidArgumentException;
+use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
+use League\OAuth2\Server\RequestTypes\AuthorizationRequestInterface;
+use RuntimeException;
+
+class AuthorizationRequestStorage
+{
+    public function __construct(
+        private Session $session,
+    ) {}
+
+    public function store(string $clientId, AuthorizationRequestInterface $request): void
+    {
+        /** @noinspection PhpConditionAlreadyCheckedInspection */
+        if (!$request instanceof AuthorizationRequest) {
+            throw new InvalidArgumentException("Unsupported authorization request instance.");
+        }
+
+        $this->session->set(self::composeSessionKey($clientId), serialize($request));
+    }
+
+    public function get(string $clientId, bool $clear = false): ?AuthorizationRequest
+    {
+        $key = self::composeSessionKey($clientId);
+
+        $raw = $this->session->get($key);
+
+        if (!$raw) {
+            return null;
+        }
+
+        if ($clear) {
+            $this->session->clear($key);
+        }
+
+        $request = unserialize($raw, [
+            'allowed_classes' => [
+                AuthorizationRequest::class,
+                ClientEntity::class,
+                ScopeEntity::class,
+                AuthCodeEntity::class,
+            ]
+        ]);
+
+        if (!$request instanceof AuthorizationRequest) {
+            throw new RuntimeException("Unserialization error.");
+        }
+
+        return $request;
+    }
+
+    public static function composeSessionKey(string $clientId): string
+    {
+        return "oAuthServerAuthorizeRequest_" . $clientId;
+    }
+}

application/Espo/Tools/OAuthServer/League/AuthorizationServerFactory.php

@@ -0,0 +1,132 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League;
+
+use Espo\Core\Exceptions\Error;
+use Espo\Tools\OAuthServer\League\Repositories\AccessTokenRepository;
+use Espo\Tools\OAuthServer\League\Repositories\AuthCodeRepository;
+use Espo\Tools\OAuthServer\League\Repositories\ClientRepository;
+use Espo\Tools\OAuthServer\League\Repositories\RefreshTokenRepository;
+use Espo\Tools\OAuthServer\League\Repositories\ScopeRepository;
+use Espo\Tools\OAuthServer\Utils\CryptKeyProvider;
+use Exception;
+
+use League\OAuth2\Server\AuthorizationServer;
+use League\OAuth2\Server\CryptKey;
+use League\OAuth2\Server\Grant\AuthCodeGrant;
+use League\OAuth2\Server\Grant\RefreshTokenGrant;
+
+class AuthorizationServerFactory
+{
+    public function __construct(
+        private ClientRepository $clientRepository,
+        private AccessTokenRepository $accessTokenRepository,
+        private ScopeRepository $scopeRepository,
+        private AuthCodeRepository $authCodeRepository,
+        private RefreshTokenRepository $refreshTokenRepository,
+        private CryptKeyProvider $cryptKeyProvider,
+        private ConfigDataProvider $configDataProvider,
+    ) {}
+
+    /**
+     * @throws Error
+     */
+    public function create(): AuthorizationServer
+    {
+        $server = new AuthorizationServer(
+            clientRepository: $this->clientRepository,
+            accessTokenRepository: $this->accessTokenRepository,
+            scopeRepository: $this->scopeRepository,
+            privateKey: $this->createPrivateKeyStub(),
+            encryptionKey: $this->cryptKeyProvider->getCryptKey(),
+        );
+
+        $server->revokeRefreshTokens(true);
+
+        $this->enableAuthorizationCodeGrant($server);
+        $this->enableRefreshTokenGrant($server);
+
+        return $server;
+    }
+
+    /**
+     * @throws Error
+     */
+    private function enableAuthorizationCodeGrant(AuthorizationServer $server): void
+    {
+        try {
+            $grant = new AuthCodeGrant(
+                authCodeRepository: $this->authCodeRepository,
+                refreshTokenRepository: $this->refreshTokenRepository,
+                authCodeTTL: $this->configDataProvider->getAuthorizationCodeTtl(),
+            );
+        } catch (Exception $e) {
+            throw new Error("Error occurred.", previous: $e);
+        }
+
+        $server->enableGrantType(
+            grantType: $grant,
+            accessTokenTTL: $this->configDataProvider->getAccessTokenTtl(),
+        );
+    }
+
+    /**
+     * @throws Error
+     */
+    private function enableRefreshTokenGrant(AuthorizationServer $server): void
+    {
+        try {
+            $grant = new RefreshTokenGrant($this->refreshTokenRepository);
+        } catch (Exception $e) {
+            throw new Error("Error occurred.", previous: $e);
+        }
+
+        $grant->setRefreshTokenTTL($this->configDataProvider->getRefreshTokenTtl());
+
+        $server->enableGrantType(
+            grantType: $grant,
+            accessTokenTTL: $this->configDataProvider->getAccessTokenTtl(),
+        );
+    }
+
+    /**
+     * Access token encryption is not used. Opaque tokens are used.
+     */
+    private function createPrivateKeyStub(): CryptKey
+    {
+        return new class() extends CryptKey {
+
+            /**
+             * @noinspection PhpMissingParentConstructorInspection
+             */
+            public function __construct() {}
+        };
+    }
+}

application/Espo/Tools/OAuthServer/League/ConfigDataProvider.php

@@ -0,0 +1,78 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League;
+
+use Espo\Core\Utils\Config;
+use DateInterval;
+use DateMalformedIntervalStringException;
+use RuntimeException;
+
+class ConfigDataProvider
+{
+    private const string AUTHORIZATION_CODE_TTL = 'PT10M';
+    private const string ACCESS_TOKEN_TTL = 'PT1H';
+    private const string REFRESH_TOKEN_TTL = 'P1M';
+
+    public function __construct(
+        private Config $config,
+    ) {}
+
+    public function getAuthorizationCodeTtl(): DateInterval
+    {
+        $interval = $this->config->get('oAuthServer.ttl.authorizationCode') ?? self::AUTHORIZATION_CODE_TTL;
+
+        return self::convertIntervalToDateInterval($interval);
+    }
+
+    public function getAccessTokenTtl(): DateInterval
+    {
+        $interval = $this->config->get('oAuthServer.ttl.accessToken') ?? self::ACCESS_TOKEN_TTL;
+
+        return self::convertIntervalToDateInterval($interval);
+    }
+
+    public function getRefreshTokenTtl(): DateInterval
+    {
+        $interval = $this->config->get('oAuthServer.ttl.refreshToken') ?? self::REFRESH_TOKEN_TTL;
+
+        return self::convertIntervalToDateInterval($interval);
+    }
+
+    private static function convertIntervalToDateInterval(mixed $interval): DateInterval
+    {
+        try {
+            $value = new DateInterval($interval);
+        } catch (DateMalformedIntervalStringException $e) {
+            throw new RuntimeException("Bad interval '$interval'.", previous: $e);
+        }
+
+        return $value;
+    }
+}

application/Espo/Tools/OAuthServer/League/Entities/AccessTokenEntity.php

@@ -0,0 +1,146 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use DateTimeImmutable;
+use Espo\Core\Field\DateTime;
+use Espo\Core\Field\Link;
+use Espo\Tools\OAuthServer\Entities\AccessToken;
+use Espo\Tools\OAuthServer\Utils\IdentifierHasher;
+use InvalidArgumentException;
+use League\OAuth2\Server\CryptKeyInterface;
+use League\OAuth2\Server\Entities\AccessTokenEntityInterface;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use League\OAuth2\Server\Entities\ScopeEntityInterface;
+
+class AccessTokenEntity implements AccessTokenEntityInterface
+{
+    public function __construct(
+        private AccessToken $entity,
+        private IdentifierHasher $hasher,
+    ) {}
+
+    public function toString(): string
+    {
+        return $this->entity->getIdentifier();
+    }
+
+    /**
+     * @inheritDoc
+     * @return void
+     */
+    public function setPrivateKey(CryptKeyInterface $privateKey): void
+    {}
+
+    public function __toString()
+    {
+        return $this->toString();
+    }
+
+    public function getIdentifier(): string
+    {
+        return $this->entity->getIdentifier();
+    }
+
+    public function setIdentifier(string $identifier): void
+    {
+        $this->entity->setIdentifier($identifier);
+
+        $hash = $this->hasher->hash($identifier);
+
+        $this->entity->setHash($hash);
+    }
+
+    public function getExpiryDateTime(): DateTimeImmutable
+    {
+        return $this->entity->getExpiresAt()->toDateTime();
+    }
+
+    public function setExpiryDateTime(DateTimeImmutable $dateTime): void
+    {
+        $this->entity->setExpiresAt(DateTime::fromDateTime($dateTime));
+    }
+
+    public function setUserIdentifier(string $identifier): void
+    {
+        $link = Link::create($identifier);
+
+        $this->entity->setUser($link);
+    }
+
+    public function getUserIdentifier(): ?string
+    {
+        /** @var non-empty-string */
+        return $this->entity->getUser()->getId();
+    }
+
+    public function getClient(): ClientEntityInterface
+    {
+        return ClientEntity::fromEntity($this->entity->getClient());
+    }
+
+
+    public function setClient(ClientEntityInterface $client): void
+    {
+        /** @noinspection PhpConditionAlreadyCheckedInspection */
+        if (!$client instanceof ClientEntity) {
+            throw new InvalidArgumentException("Not supported client entity.");
+        }
+
+        $this->entity->setClient(Link::create($client->entityId));
+    }
+
+
+    public function addScope(ScopeEntityInterface $scope): void
+    {
+        $scopes = $this->entity->getScopes();
+
+        if (!in_array($scope->getIdentifier(), $scopes)) {
+            $scopes[] = $scope->getIdentifier();
+        }
+
+        $this->entity->setScopes($scopes);
+    }
+
+    /**
+     * @return ScopeEntityInterface[]
+     */
+    public function getScopes(): array
+    {
+        $scopes = $this->entity->getScopes();
+
+        return array_map(fn ($scope) => new ScopeEntity($scope), $scopes);
+    }
+
+    public function getEntity(): AccessToken
+    {
+        return $this->entity;
+    }
+}

application/Espo/Tools/OAuthServer/League/Entities/AuthCodeEntity.php

@@ -0,0 +1,42 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use League\OAuth2\Server\Entities\AuthCodeEntityInterface;
+use League\OAuth2\Server\Entities\Traits\AuthCodeTrait;
+use League\OAuth2\Server\Entities\Traits\EntityTrait;
+use League\OAuth2\Server\Entities\Traits\TokenEntityTrait;
+
+class AuthCodeEntity implements AuthCodeEntityInterface
+{
+    use EntityTrait;
+    use AuthCodeTrait;
+    use TokenEntityTrait;
+}

application/Espo/Tools/OAuthServer/League/Entities/ClientEntity.php

@@ -0,0 +1,87 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use Espo\Tools\OAuthServer\ClientType;
+use Espo\Tools\OAuthServer\Entities\Client;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use UnexpectedValueException;
+
+class ClientEntity implements ClientEntityInterface
+{
+    /**
+     * @param non-empty-string $identifier
+     * @param string[] $redirectUri
+     */
+    public function __construct(
+        public string $entityId,
+        private string $identifier,
+        private string $name,
+        private array $redirectUri,
+        private bool $isConfidential,
+    ) {}
+
+    public static function fromEntity(Client $entity): self
+    {
+        return new self(
+            entityId: $entity->getId(),
+            identifier: $entity->getIdentifier() ?? throw new UnexpectedValueException("No client identifier."),
+            name: $entity->getName() ?? $entity->getId(),
+            redirectUri: $entity->getRedirectUris(),
+            isConfidential: $entity->getClientType() === ClientType::Confidential,
+        );
+    }
+
+    /**
+     * @return non-empty-string
+     */
+    public function getIdentifier(): string
+    {
+        return $this->identifier;
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getRedirectUri(): array
+    {
+        return $this->redirectUri;
+    }
+
+    public function isConfidential(): bool
+    {
+        return $this->isConfidential;
+    }
+}

application/Espo/Tools/OAuthServer/League/Entities/RefreshTokenEntity.php

@@ -0,0 +1,40 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use League\OAuth2\Server\Entities\RefreshTokenEntityInterface;
+use League\OAuth2\Server\Entities\Traits\EntityTrait;
+use League\OAuth2\Server\Entities\Traits\RefreshTokenTrait;
+
+class RefreshTokenEntity implements RefreshTokenEntityInterface
+{
+    use RefreshTokenTrait;
+    use EntityTrait;
+}

application/Espo/Tools/OAuthServer/League/Entities/ScopeEntity.php

@@ -0,0 +1,53 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use League\OAuth2\Server\Entities\ScopeEntityInterface;
+use League\OAuth2\Server\Entities\Traits\ScopeTrait;
+
+class ScopeEntity implements ScopeEntityInterface
+{
+    use ScopeTrait;
+
+    /**
+     * @param non-empty-string $identifier
+     */
+    public function __construct(
+        private string $identifier,
+    ) {}
+
+    /**
+     * @return non-empty-string
+     */
+    public function getIdentifier(): string
+    {
+        return $this->identifier;
+    }
+}

application/Espo/Tools/OAuthServer/League/Entities/UserEntity.php

@@ -0,0 +1,55 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Entities;
+
+use Espo\Entities\User;
+use League\OAuth2\Server\Entities\UserEntityInterface;
+use LogicException;
+
+class UserEntity implements UserEntityInterface
+{
+    public function __construct(
+        private User $user,
+    ) {
+        if ($user->isSystem()) {
+            // Extra safety measure.
+            throw new LogicException();
+        }
+    }
+
+    /**
+     * @return non-empty-string
+     */
+    public function getIdentifier(): string
+    {
+        /** @var non-empty-string */
+        return $this->user->getId();
+    }
+}

application/Espo/Tools/OAuthServer/League/Repositories/AccessTokenRepository.php

@@ -0,0 +1,124 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Repositories;
+
+use Espo\Core\Field\Link;
+use Espo\ORM\EntityManager;
+use Espo\Tools\OAuthServer\Entities\AccessToken;
+use Espo\Tools\OAuthServer\League\Entities\AccessTokenEntity;
+use Espo\Tools\OAuthServer\League\Entities\ClientEntity;
+use Espo\Tools\OAuthServer\Repository\AccessTokenRepository as Repository;
+use Espo\Tools\OAuthServer\Utils\IdentifierHasher;
+use InvalidArgumentException;
+use League\OAuth2\Server\Entities\AccessTokenEntityInterface;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use League\OAuth2\Server\Entities\ScopeEntityInterface;
+use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
+use SensitiveParameter;
+
+class AccessTokenRepository implements AccessTokenRepositoryInterface
+{
+    public function __construct(
+        private EntityManager $entityManager,
+        private Repository $repository,
+        private IdentifierHasher $hasher,
+    ) {}
+
+    /**
+     * @param ScopeEntityInterface[] $scopes
+     */
+    public function getNewToken(
+        ClientEntityInterface $clientEntity,
+        array $scopes,
+        ?string $userIdentifier = null,
+    ): AccessTokenEntityInterface {
+
+        $entity = $this->entityManager->getRDBRepositoryByClass(AccessToken::class)->getNew();
+
+        /** @noinspection PhpConditionAlreadyCheckedInspection */
+        if (!$clientEntity instanceof ClientEntity) {
+            throw new InvalidArgumentException("Bad client.");
+        }
+
+        if (!$userIdentifier) {
+            throw new InvalidArgumentException('No user ID.');
+        }
+
+        $entity->setClient(Link::create($clientEntity->entityId));
+
+        $accessToken = new AccessTokenEntity($entity, $this->hasher);
+
+        foreach ($scopes as $scope) {
+            $accessToken->addScope($scope);
+        }
+
+        $accessToken->setUserIdentifier($userIdentifier);
+
+        return $accessToken;
+    }
+
+    public function persistNewAccessToken(AccessTokenEntityInterface $accessTokenEntity): void
+    {
+        /** @noinspection PhpConditionAlreadyCheckedInspection */
+        if (!$accessTokenEntity instanceof AccessTokenEntity) {
+            throw new InvalidArgumentException("Not supported access token entity.");
+        }
+
+        $this->entityManager->saveEntity($accessTokenEntity->getEntity());
+    }
+
+    public function revokeAccessToken(#[SensitiveParameter] string $tokenId): void
+    {
+        $entity = $this->repository->getActiveByIdentifier($tokenId);
+
+        if (!$entity || $entity->isRevoked()) {
+            return;
+        }
+
+        $entity->setRevoked();
+
+        $this->entityManager->saveEntity($entity);
+    }
+
+    /**
+     * Not existent or inactive token is treated as revoked intentionally.
+     */
+    public function isAccessTokenRevoked(#[SensitiveParameter] string $tokenId): bool
+    {
+        $entity = $this->repository->getActiveByIdentifier($tokenId);
+
+        if (!$entity) {
+            return true;
+        }
+
+        // Intentionally.
+        return !$entity->isActive();
+    }
+}

application/Espo/Tools/OAuthServer/League/Repositories/AuthCodeRepository.php

@@ -0,0 +1,119 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Repositories;
+
+use Espo\Core\Field\DateTime;
+use Espo\Core\Field\Link;
+use Espo\ORM\EntityManager;
+use Espo\Tools\OAuthServer\Entities\AuthorizationCode;
+use Espo\Tools\OAuthServer\League\Entities\AuthCodeEntity;
+use Espo\Tools\OAuthServer\Repository\AuthorizationCodeRepository;
+use Espo\Tools\OAuthServer\Repository\ClientRepository as ClientRepository;
+use Espo\Tools\OAuthServer\Utils\IdentifierHasher;
+use InvalidArgumentException;
+use League\OAuth2\Server\Entities\AuthCodeEntityInterface;
+use League\OAuth2\Server\Repositories\AuthCodeRepositoryInterface;
+use RuntimeException;
+use SensitiveParameter;
+
+class AuthCodeRepository implements AuthCodeRepositoryInterface
+{
+    public function __construct(
+        private EntityManager $entityManager,
+        private AuthorizationCodeRepository $repository,
+        private ClientRepository $clientRepository,
+        private IdentifierHasher $hasher,
+    ) {}
+
+    public function getNewAuthCode(): AuthCodeEntity
+    {
+        return new AuthCodeEntity();
+    }
+
+    public function persistNewAuthCode(AuthCodeEntityInterface $authCodeEntity): void
+    {
+        $entity = $this->entityManager->getRDBRepositoryByClass(AuthorizationCode::class)->getNew();
+
+        $userId = $authCodeEntity->getUserIdentifier();
+
+        if (!is_string($userId)) {
+            throw new InvalidArgumentException("User ID must be string.");
+        }
+
+        $scopes = array_map(fn ($scope) => $scope->getIdentifier(), $authCodeEntity->getScopes());
+
+        $redirectUri = $authCodeEntity->getRedirectUri() ?? throw new InvalidArgumentException("No redirect URI");
+
+        $clientId = $authCodeEntity->getClient()->getIdentifier();
+
+        $client = $this->clientRepository->getActiveByIdentifier($clientId);
+
+        if (!$client) {
+            throw new RuntimeException("Client not found.");
+        }
+
+        $hash = $this->hasher->hash($authCodeEntity->getIdentifier());
+
+        $entity
+            ->setClient($client)
+            ->setHash($hash)
+            ->setUser(Link::create($userId))
+            ->setScopes($scopes)
+            ->setRedirectUri($redirectUri)
+            ->setExpiresAt(DateTime::fromDateTime($authCodeEntity->getExpiryDateTime()));
+
+        $this->entityManager->saveEntity($entity);
+    }
+
+    public function revokeAuthCode(#[SensitiveParameter] string $codeId): void
+    {
+        $code = $this->repository->getActiveByIdentifier($codeId);
+
+        if (!$code || $code->isRevoked()) {
+            return;
+        }
+
+        $code->setRevoked();
+
+        $this->entityManager->saveEntity($code);
+    }
+
+    public function isAuthCodeRevoked(#[SensitiveParameter] string $codeId): bool
+    {
+        $entity = $this->repository->getActiveByIdentifier($codeId);
+
+        if (!$entity) {
+            return true;
+        }
+
+        // Intentionally.
+        return !$entity->isActive();
+    }
+}

application/Espo/Tools/OAuthServer/League/Repositories/ClientRepository.php

@@ -0,0 +1,70 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Repositories;
+
+use Espo\Tools\OAuthServer\ClientValidator;
+use Espo\Tools\OAuthServer\League\Entities\ClientEntity;
+use Espo\Tools\OAuthServer\Repository\ClientRepository as Repository;
+use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
+use SensitiveParameter;
+
+class ClientRepository implements ClientRepositoryInterface
+{
+    public function __construct(
+        private Repository $repository,
+        private ClientValidator $clientValidator,
+    ) {}
+
+    public function getClientEntity(string $clientIdentifier): ?ClientEntity
+    {
+        $client = $this->repository->getActiveByIdentifier($clientIdentifier);
+
+        if (!$client) {
+            return null;
+        }
+
+        return ClientEntity::fromEntity($client);
+    }
+
+    public function validateClient(
+        string $clientIdentifier,
+        #[SensitiveParameter] ?string $clientSecret,
+        ?string $grantType,
+    ): bool {
+
+        $client = $this->repository->getActiveByIdentifier($clientIdentifier);
+
+        if (!$client) {
+            return false;
+        }
+
+        return $this->clientValidator->validate($client, $clientSecret);
+    }
+}

application/Espo/Tools/OAuthServer/League/Repositories/RefreshTokenRepository.php

@@ -0,0 +1,122 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Repositories;
+
+use Espo\Core\Field\DateTime;
+use Espo\Core\Field\Link;
+use Espo\ORM\EntityManager;
+use Espo\Tools\OAuthServer\Entities\RefreshToken;
+use Espo\Tools\OAuthServer\League\Entities\AccessTokenEntity;
+use Espo\Tools\OAuthServer\League\Entities\RefreshTokenEntity;
+use Espo\Tools\OAuthServer\Repository\ClientRepository as ClientRepositoryInternal;
+use Espo\Tools\OAuthServer\Repository\RefreshTokenRepository as RefreshTokenRepositoryInternal;
+use Espo\Tools\OAuthServer\Utils\IdentifierHasher;
+use InvalidArgumentException;
+use League\OAuth2\Server\Entities\RefreshTokenEntityInterface;
+use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
+use RuntimeException;
+use SensitiveParameter;
+
+class RefreshTokenRepository implements RefreshTokenRepositoryInterface
+{
+    public function __construct(
+        private EntityManager $entityManager,
+        private RefreshTokenRepositoryInternal $repository,
+        private ClientRepositoryInternal $clientRepository,
+        private IdentifierHasher $hasher,
+    ) {}
+
+    public function getNewRefreshToken(): RefreshTokenEntity
+    {
+        return new RefreshTokenEntity();
+    }
+
+    public function persistNewRefreshToken(RefreshTokenEntityInterface $refreshTokenEntity): void
+    {
+        $entity = $this->entityManager->getRDBRepositoryByClass(RefreshToken::class)->getNew();
+
+        $userId = $refreshTokenEntity->getAccessToken()->getUserIdentifier();
+
+        if (!is_string($userId)) {
+            throw new InvalidArgumentException("User ID must be string.");
+        }
+
+        $clientId = $refreshTokenEntity->getAccessToken()->getClient()->getIdentifier();
+
+        $client = $this->clientRepository->getActiveByIdentifier($clientId) ??
+            throw new RuntimeException("Client not found.");
+
+        $accessToken = $refreshTokenEntity->getAccessToken();
+
+        /** @noinspection PhpConditionAlreadyCheckedInspection */
+        if (!$accessToken instanceof AccessTokenEntity) {
+            throw new InvalidArgumentException("Not supported access token implementation.");
+        }
+
+        $hash = $this->hasher->hash($refreshTokenEntity->getIdentifier());
+
+        $entity
+            ->setClient($client)
+            ->setAccessToken($accessToken->getEntity())
+            ->setHash($hash)
+            ->setUser(Link::create($userId))
+            ->setExpiresAt(DateTime::fromDateTime($refreshTokenEntity->getExpiryDateTime()));
+
+        $this->entityManager->saveEntity($entity);
+    }
+
+    /**
+     * @todo Delay?
+     */
+    public function revokeRefreshToken(#[SensitiveParameter] string $tokenId): void
+    {
+        $token = $this->repository->getActiveByIdentifier($tokenId);
+
+        if (!$token || $token->isRevoked()) {
+            return;
+        }
+
+        $token->setRevoked();
+
+        $this->entityManager->saveEntity($token);
+    }
+
+    public function isRefreshTokenRevoked(#[SensitiveParameter] string $tokenId): bool
+    {
+        $entity = $this->repository->getActiveByIdentifier($tokenId);
+
+        if (!$entity) {
+            return true;
+        }
+
+        // Intentionally.
+        return !$entity->isActive();
+    }
+}

application/Espo/Tools/OAuthServer/League/Repositories/ScopeRepository.php

@@ -0,0 +1,82 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 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\Tools\OAuthServer\League\Repositories;
+
+use Espo\Tools\OAuthServer\League\Entities\ScopeEntity;
+use Espo\Tools\OAuthServer\Scope\UserAvailableScopesFilter;
+use Espo\Tools\OAuthServer\Scope\ScopeValidator;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use League\OAuth2\Server\Repositories\ScopeRepositoryInterface;
+
+class ScopeRepository implements ScopeRepositoryInterface
+{
+    public function __construct(
+        private ScopeValidator $scopeValidator,
+        private UserAvailableScopesFilter $userAvailableScopesProvider,
+    ) {}
+
+    /**
+     * @param non-empty-string $identifier
+     */
+    public function getScopeEntityByIdentifier(string $identifier): ?ScopeEntity
+    {
+        if (!$this->scopeValidator->validate($identifier)) {
+            return null;
+        }
+
+        return new ScopeEntity($identifier);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function finalizeScopes(
+        array $scopes,
+        ?string $grantType,
+        ClientEntityInterface $clientEntity,
+        ?string $userIdentifier = null,
+        ?string $authCodeId = null,
+    ): array {
+
+        if (!$userIdentifier) {
+            return $scopes;
+        }
+
+        $ids = array_map(fn ($it) => $it->getIdentifier(), $scopes);
+
+        $availableIds = $this->userAvailableScopesProvider->filter($userIdentifier, $ids);
+
+        $scopes = array_filter($scopes, function ($scope) use ($availableIds) {
+            return in_array($scope->getIdentifier(), $availableIds);
+        });
+
+        return array_values($scopes);
+    }
+}