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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * SPDX-License-Identifier: EUPL-1.2 |
| 5 | * |
| 6 | * This file is part of icap-flow. |
| 7 | * |
| 8 | * Licensed under the EUPL, Version 1.2 only (the "Licence"); |
| 9 | * you may not use this work except in compliance with the Licence. |
| 10 | * You may obtain a copy of the Licence at: |
| 11 | * |
| 12 | * https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the Licence is distributed on an "AS IS" basis, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | */ |
| 18 | |
| 19 | declare(strict_types=1); |
| 20 | |
| 21 | namespace Ndrstmr\Icap; |
| 22 | |
| 23 | use Amp\Cancellation; |
| 24 | use Amp\Future; |
| 25 | use Ndrstmr\Icap\DTO\IcapRequest; |
| 26 | use Ndrstmr\Icap\DTO\IcapResponse; |
| 27 | use Ndrstmr\Icap\DTO\ScanResult; |
| 28 | |
| 29 | /** |
| 30 | * Public contract for ICAP clients. |
| 31 | * |
| 32 | * Implementations are async-native and return Amp Futures. The synchronous |
| 33 | * decorator {@see SynchronousIcapClient} awaits those Futures behind a |
| 34 | * blocking facade. |
| 35 | * |
| 36 | * Every method takes an optional {@see Cancellation} so a caller can |
| 37 | * abort an in-flight scan from the outside (e.g. when an upstream HTTP |
| 38 | * upload has been aborted). The user-supplied token is combined with the |
| 39 | * per-request timeout cancellation derived from |
| 40 | * {@see Config::getStreamTimeout()}; whichever fires first wins. |
| 41 | */ |
| 42 | interface IcapClientInterface |
| 43 | { |
| 44 | /** |
| 45 | * Send a raw ICAP request. |
| 46 | * |
| 47 | * @return Future<ScanResult> |
| 48 | */ |
| 49 | public function request(IcapRequest $request, ?Cancellation $cancellation = null): Future; |
| 50 | |
| 51 | /** |
| 52 | * Issue an OPTIONS request against the given service. Returns the raw |
| 53 | * {@see IcapResponse} on success so callers can inspect capability |
| 54 | * headers (`Preview`, `Options-TTL`, `Methods`, `Allow`, `Service`, |
| 55 | * `ISTag`, …) directly. The fail-secure status-code interpretation |
| 56 | * still applies — 4xx throws {@see IcapClientException}, 5xx throws |
| 57 | * {@see IcapServerException}, `100 Continue` throws |
| 58 | * {@see IcapProtocolException}. |
| 59 | * |
| 60 | * @return Future<IcapResponse> |
| 61 | */ |
| 62 | public function options(string $service, ?Cancellation $cancellation = null): Future; |
| 63 | |
| 64 | /** |
| 65 | * Scan a local file via RESPMOD. |
| 66 | * |
| 67 | * @param array<string, string|string[]> $extraHeaders Extra ICAP request |
| 68 | * headers, e.g. `['X-Client-IP' => '203.0.113.5']`. Library-managed |
| 69 | * headers (`Host`, `Encapsulated`, `Connection`) always take precedence. |
| 70 | * @return Future<ScanResult> |
| 71 | */ |
| 72 | public function scanFile( |
| 73 | string $service, |
| 74 | string $filePath, |
| 75 | array $extraHeaders = [], |
| 76 | ?Cancellation $cancellation = null, |
| 77 | ): Future; |
| 78 | |
| 79 | /** |
| 80 | * Scan a file using preview mode, streaming the remainder on demand. |
| 81 | * |
| 82 | * When $previewSize is null the client queries the OPTIONS cache for |
| 83 | * the server's advertised `Preview` header (RFC 3507 §4.10.2) and |
| 84 | * uses that value. Falls back to 1024 when the cache has no entry |
| 85 | * or the response carries no `Preview` header. |
| 86 | * |
| 87 | * @param array<string, string|string[]> $extraHeaders See {@see scanFile()}. |
| 88 | * `Preview` and `Allow` are library-managed and cannot be |
| 89 | * overridden via this parameter. |
| 90 | * @return Future<ScanResult> |
| 91 | */ |
| 92 | public function scanFileWithPreview( |
| 93 | string $service, |
| 94 | string $filePath, |
| 95 | ?int $previewSize = null, |
| 96 | array $extraHeaders = [], |
| 97 | ?Cancellation $cancellation = null, |
| 98 | ): Future; |
| 99 | } |