diff options
Diffstat (limited to 'lib/private/Metadata/Provider/ExifProvider.php')
| -rw-r--r-- | lib/private/Metadata/Provider/ExifProvider.php | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/lib/private/Metadata/Provider/ExifProvider.php b/lib/private/Metadata/Provider/ExifProvider.php deleted file mode 100644 index 26edc6e01a0..00000000000 --- a/lib/private/Metadata/Provider/ExifProvider.php +++ /dev/null @@ -1,139 +0,0 @@ -<?php - -declare(strict_types=1); -/** - * @copyright Copyright 2022 Carl Schwan <carl@carlschwan.eu> - * @copyright Copyright 2022 Louis Chmn <louis@chmn.me> - * @license AGPL-3.0-or-later - * - * This code is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License, version 3, - * as published by the Free Software Foundation. - * - * 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, version 3, - * along with this program. If not, see <http://www.gnu.org/licenses/> - * - */ - -namespace OC\Metadata\Provider; - -use OC\Metadata\FileMetadata; -use OC\Metadata\IMetadataProvider; -use OCP\Files\File; -use Psr\Log\LoggerInterface; - -class ExifProvider implements IMetadataProvider { - public function __construct( - private LoggerInterface $logger, - ) { - } - - public static function groupsProvided(): array { - return ['size', 'gps']; - } - - public static function isAvailable(): bool { - return extension_loaded('exif'); - } - - /** @return array{'gps'?: FileMetadata, 'size'?: FileMetadata} */ - public function execute(File $file): array { - $exifData = []; - $fileDescriptor = $file->fopen('rb'); - - if ($fileDescriptor === false) { - return []; - } - - $data = null; - try { - // Needed to make reading exif data reliable. - // This is to trigger this condition: https://github.com/php/php-src/blob/d64aa6f646a7b5e58359dc79479860164239580a/main/streams/streams.c#L710 - // But I don't understand why 1 as a special meaning. - // Revert right after reading the exif data. - $oldBufferSize = stream_set_chunk_size($fileDescriptor, 1); - $data = @exif_read_data($fileDescriptor, 'ANY_TAG', true); - stream_set_chunk_size($fileDescriptor, $oldBufferSize); - } catch (\Exception $ex) { - $this->logger->info("Couldn't extract metadata for ".$file->getId(), ['exception' => $ex]); - } - - $size = new FileMetadata(); - $size->setGroupName('size'); - $size->setId($file->getId()); - $size->setArrayAsValue([]); - - if (!$data) { - $sizeResult = getimagesizefromstring($file->getContent()); - if ($sizeResult !== false) { - $size->setArrayAsValue([ - 'width' => $sizeResult[0], - 'height' => $sizeResult[1], - ]); - - $exifData['size'] = $size; - } - } elseif (array_key_exists('COMPUTED', $data)) { - if (array_key_exists('Width', $data['COMPUTED']) && array_key_exists('Height', $data['COMPUTED'])) { - $size->setArrayAsValue([ - 'width' => $data['COMPUTED']['Width'], - 'height' => $data['COMPUTED']['Height'], - ]); - - $exifData['size'] = $size; - } - } - - if ($data && array_key_exists('GPS', $data) - && array_key_exists('GPSLatitude', $data['GPS']) && array_key_exists('GPSLatitudeRef', $data['GPS']) - && array_key_exists('GPSLongitude', $data['GPS']) && array_key_exists('GPSLongitudeRef', $data['GPS']) - ) { - $gps = new FileMetadata(); - $gps->setGroupName('gps'); - $gps->setId($file->getId()); - $gps->setArrayAsValue([ - 'latitude' => $this->gpsDegreesToDecimal($data['GPS']['GPSLatitude'], $data['GPS']['GPSLatitudeRef']), - 'longitude' => $this->gpsDegreesToDecimal($data['GPS']['GPSLongitude'], $data['GPS']['GPSLongitudeRef']), - ]); - - $exifData['gps'] = $gps; - } - - return $exifData; - } - - public static function getMimetypesSupported(): string { - return '/image\/(png|jpeg|heif|webp|tiff)/'; - } - - /** - * @param array|string $coordinates - */ - private static function gpsDegreesToDecimal($coordinates, ?string $hemisphere): float { - if (is_string($coordinates)) { - $coordinates = array_map("trim", explode(",", $coordinates)); - } - - if (count($coordinates) !== 3) { - throw new \Exception('Invalid coordinate format: ' . json_encode($coordinates)); - } - - [$degrees, $minutes, $seconds] = array_map(function (string $rawDegree) { - $parts = explode('/', $rawDegree); - - if ($parts[1] === '0') { - return 0; - } - - return floatval($parts[0]) / floatval($parts[1] ?? 1); - }, $coordinates); - - $sign = ($hemisphere === 'W' || $hemisphere === 'S') ? -1 : 1; - return $sign * ($degrees + $minutes / 60 + $seconds / 3600); - } -} |