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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | /** |
| 5 | * SPDX-FileCopyrightText: 2026 LibreCode coop and contributors |
| 6 | * SPDX-License-Identifier: AGPL-3.0-or-later |
| 7 | */ |
| 8 | |
| 9 | namespace OCA\Libresign\Service\Policy\Provider\SignatureHashAlgorithm; |
| 10 | |
| 11 | use OCA\Libresign\Service\Policy\Contract\IPolicyDefinition; |
| 12 | use OCA\Libresign\Service\Policy\Contract\IPolicyDefinitionProvider; |
| 13 | use OCA\Libresign\Service\Policy\Model\PolicyContext; |
| 14 | use OCA\Libresign\Service\Policy\Model\PolicyLayer; |
| 15 | use OCA\Libresign\Service\Policy\Model\PolicySpec; |
| 16 | use OCA\Libresign\Service\Policy\Provider\Helper\DelegationLayerHelper; |
| 17 | use OCA\Libresign\Service\Policy\Provider\Helper\PolicyKeyNormalizer; |
| 18 | |
| 19 | final class SignatureHashAlgorithmPolicy implements IPolicyDefinitionProvider { |
| 20 | public const KEY = 'signature_hash_algorithm'; |
| 21 | public const SYSTEM_APP_CONFIG_KEY = 'signature_hash_algorithm'; |
| 22 | |
| 23 | /** @var string[] */ |
| 24 | private const ALGORITHMS = [ |
| 25 | 'SHA1', |
| 26 | 'SHA256', |
| 27 | 'SHA384', |
| 28 | 'SHA512', |
| 29 | 'RIPEMD160', |
| 30 | ]; |
| 31 | |
| 32 | #[\Override] |
| 33 | public function keys(): array { |
| 34 | return [ |
| 35 | self::KEY, |
| 36 | ]; |
| 37 | } |
| 38 | |
| 39 | #[\Override] |
| 40 | public function get(string|\BackedEnum $policyKey): IPolicyDefinition { |
| 41 | return match (PolicyKeyNormalizer::normalize($policyKey)) { |
| 42 | self::KEY => new PolicySpec( |
| 43 | key: self::KEY, |
| 44 | defaultSystemValue: 'SHA256', |
| 45 | allowedValues: self::ALGORITHMS, |
| 46 | normalizer: static fn (mixed $rawValue): string => strtoupper(trim((string)$rawValue)), |
| 47 | validator: static function (mixed $value): void { |
| 48 | if (!is_string($value) || !in_array($value, self::ALGORITHMS, true)) { |
| 49 | throw new \InvalidArgumentException('Invalid value for ' . self::KEY); |
| 50 | } |
| 51 | }, |
| 52 | appConfigKey: self::SYSTEM_APP_CONFIG_KEY, |
| 53 | supportsRequestOverride: true, |
| 54 | requestLifecycle: PolicySpec::LIFECYCLE_RUNTIME, |
| 55 | groupPolicyManager: static function (PolicyContext $context, ?PolicyLayer $systemPolicy, array $groupLayers): bool { |
| 56 | $actorRole = $context->getActorRole(); |
| 57 | if ($actorRole->canManageSystemPolicies) { |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | if (!$actorRole->canManageGroupPolicies) { |
| 62 | return false; |
| 63 | } |
| 64 | |
| 65 | if ($actorRole->manageableGroupCount < 1) { |
| 66 | return false; |
| 67 | } |
| 68 | |
| 69 | return DelegationLayerHelper::hasExplicitGlobalDelegation($systemPolicy) |
| 70 | || DelegationLayerHelper::hasSystemCreatedGroupDelegation($groupLayers); |
| 71 | }, |
| 72 | systemCreatedGroupRuleEditor: static function (PolicyContext $context, ?PolicyLayer $systemPolicy, PolicyLayer $existingPolicy): bool { |
| 73 | $actorRole = $context->getActorRole(); |
| 74 | if ($actorRole->canManageSystemPolicies) { |
| 75 | return true; |
| 76 | } |
| 77 | |
| 78 | if (!$actorRole->canManageGroupPolicies) { |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | if (!$existingPolicy->isVisibleToChild() || !$existingPolicy->isAllowChildOverride() || $existingPolicy->getValue() === null) { |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | if (DelegationLayerHelper::hasExplicitGlobalDelegation($systemPolicy)) { |
| 87 | return true; |
| 88 | } |
| 89 | |
| 90 | return $existingPolicy->isCreatedBySystemAdmin(); |
| 91 | }, |
| 92 | supportsGroupAdminDelegation: true, |
| 93 | ), |
| 94 | default => throw new \InvalidArgumentException('Unknown policy key: ' . PolicyKeyNormalizer::normalize($policyKey)), |
| 95 | }; |
| 96 | } |
| 97 | |
| 98 | } |