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✏️ Editing: WebDAVAdapter.php

<?php

declare(strict_types=1);

namespace League\Flysystem\WebDAV;

use League\Flysystem\Config;
use League\Flysystem\DirectoryAttributes;
use League\Flysystem\FileAttributes;
use League\Flysystem\FilesystemAdapter;
use League\Flysystem\PathPrefixer;
use League\Flysystem\UnableToCheckDirectoryExistence;
use League\Flysystem\UnableToCheckFileExistence;
use League\Flysystem\UnableToCopyFile;
use League\Flysystem\UnableToCreateDirectory;
use League\Flysystem\UnableToDeleteDirectory;
use League\Flysystem\UnableToDeleteFile;
use League\Flysystem\UnableToMoveFile;
use League\Flysystem\UnableToReadFile;
use League\Flysystem\UnableToRetrieveMetadata;
use League\Flysystem\UnableToSetVisibility;
use League\Flysystem\UnableToWriteFile;
use League\Flysystem\UrlGeneration\PublicUrlGenerator;
use RuntimeException;
use Sabre\DAV\Client;
use Sabre\DAV\Xml\Property\ResourceType;
use Sabre\HTTP\ClientHttpException;
use Sabre\HTTP\Request;
use Throwable;

use function array_key_exists;
use function array_shift;
use function dirname;
use function explode;
use function fclose;
use function implode;
use function parse_url;
use function rawurldecode;

class WebDAVAdapter implements FilesystemAdapter, PublicUrlGenerator
{
    public const ON_VISIBILITY_THROW_ERROR = 'throw';
    public const ON_VISIBILITY_IGNORE = 'ignore';
    public const FIND_PROPERTIES = [
        '{DAV:}displayname',
        '{DAV:}getcontentlength',
        '{DAV:}getcontenttype',
        '{DAV:}getlastmodified',
        '{DAV:}iscollection',
        '{DAV:}resourcetype',
    ];

private PathPrefixer $prefixer;

public function __construct(
        private Client $client,
        string $prefix = '',
        private string $visibilityHandling = self::ON_VISIBILITY_THROW_ERROR,
        private bool $manualCopy = false,
        private bool $manualMove = false,
    ) {
        $this->prefixer = new PathPrefixer($prefix);
    }

public function fileExists(string $path): bool
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $properties = $this->client->propFind($location, ['{DAV:}resourcetype', '{DAV:}iscollection']);

return ! $this->propsIsDirectory($properties);
        } catch (Throwable $exception) {
            if ($exception instanceof ClientHttpException && $exception->getHttpStatus() === 404) {
                return false;
            }

throw UnableToCheckFileExistence::forLocation($path, $exception);
        }
    }

protected function encodePath(string $path): string
    {
        $parts = explode('/', $path);

foreach ($parts as $i => $part) {
            $parts[$i] = rawurlencode($part);
        }

return implode('/', $parts);
    }

public function directoryExists(string $path): bool
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $properties = $this->client->propFind($location, ['{DAV:}resourcetype', '{DAV:}iscollection']);

return $this->propsIsDirectory($properties);
        } catch (Throwable $exception) {
            if ($exception instanceof ClientHttpException && $exception->getHttpStatus() === 404) {
                return false;
            }

throw UnableToCheckDirectoryExistence::forLocation($path, $exception);
        }
    }

public function write(string $path, string $contents, Config $config): void
    {
        $this->upload($path, $contents);
    }

public function writeStream(string $path, $contents, Config $config): void
    {
        $this->upload($path, $contents);
    }

/**
     * @param resource|string $contents
     */
    private function upload(string $path, mixed $contents): void
    {
        $this->createParentDirFor($path);
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $response = $this->client->request('PUT', $location, $contents);
            $statusCode = $response['statusCode'];

if ($statusCode < 200 || $statusCode >= 300) {
                throw new RuntimeException('Unexpected status code received: ' . $statusCode);
            }
        } catch (Throwable $exception) {
            throw UnableToWriteFile::atLocation($path, $exception->getMessage(), $exception);
        }
    }

public function read(string $path): string
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $response = $this->client->request('GET', $location);

if ($response['statusCode'] !== 200) {
                throw new RuntimeException('Unexpected response code for GET: ' . $response['statusCode']);
            }

return $response['body'];
        } catch (Throwable $exception) {
            throw UnableToReadFile::fromLocation($path, $exception->getMessage(), $exception);
        }
    }

public function readStream(string $path)
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $url = $this->client->getAbsoluteUrl($location);
            $request = new Request('GET', $url);
            $response = $this->client->send($request);
            $status = $response->getStatus();

if ($status !== 200) {
                throw new RuntimeException('Unexpected response code for GET: ' . $status);
            }

return $response->getBodyAsStream();
        } catch (Throwable $exception) {
            throw UnableToReadFile::fromLocation($path, $exception->getMessage(), $exception);
        }
    }

public function delete(string $path): void
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $response = $this->client->request('DELETE', $location);
            $statusCode = $response['statusCode'];

if ($statusCode !== 404 && ($statusCode < 200 || $statusCode >= 300)) {
                throw new RuntimeException('Unexpected status code received while deleting file: ' . $statusCode);
            }
        } catch (Throwable $exception) {
            if ( ! ($exception instanceof ClientHttpException && $exception->getCode() === 404)) {
                throw UnableToDeleteFile::atLocation($path, $exception->getMessage(), $exception);
            }
        }
    }

public function deleteDirectory(string $path): void
    {
        $location = $this->encodePath($this->prefixer->prefixDirectoryPath($path));

try {
            $statusCode = $this->client->request('DELETE', $location)['statusCode'];

if ($statusCode !== 404 && ($statusCode < 200 || $statusCode >= 300)) {
                throw new RuntimeException('Unexpected status code received while deleting file: ' . $statusCode);
            }
        } catch (Throwable $exception) {
            if ( ! ($exception instanceof ClientHttpException && $exception->getCode() === 404)) {
                throw UnableToDeleteDirectory::atLocation($path, $exception->getMessage(), $exception);
            }
        }
    }

public function createDirectory(string $path, Config $config): void
    {
        $parts = explode('/', $this->prefixer->prefixDirectoryPath($path));
        $directoryParts = [];

foreach ($parts as $directory) {
            if ($directory === '.' || $directory === '') {
                return;
            }

$directoryParts[] = $directory;
            $directoryPath = implode('/', $directoryParts);
            $location = $this->encodePath($directoryPath) . '/';

if ($this->directoryExists($this->prefixer->stripDirectoryPrefix($directoryPath))) {
                continue;
            }

try {
                $response = $this->client->request('MKCOL', $location);
            } catch (Throwable $exception) {
                throw UnableToCreateDirectory::dueToFailure($path, $exception);
            }

if ($response['statusCode'] === 405) {
                continue;
            }

if ($response['statusCode'] !== 201) {
                throw UnableToCreateDirectory::atLocation($path, 'Failed to create directory at: ' . $location);
            }
        }
    }

public function setVisibility(string $path, string $visibility): void
    {
        if ($this->visibilityHandling === self::ON_VISIBILITY_THROW_ERROR) {
            throw UnableToSetVisibility::atLocation($path, 'WebDAV does not support this operation.');
        }
    }

public function visibility(string $path): FileAttributes
    {
        throw UnableToRetrieveMetadata::visibility($path, 'WebDAV does not support this operation.');
    }

public function mimeType(string $path): FileAttributes
    {
        $mimeType = (string) $this->propFind($path, 'mime_type', '{DAV:}getcontenttype');

return new FileAttributes($path, mimeType: $mimeType);
    }

public function lastModified(string $path): FileAttributes
    {
        $lastModified = $this->propFind($path, 'last_modified', '{DAV:}getlastmodified');

return new FileAttributes($path, lastModified: strtotime($lastModified));
    }

public function fileSize(string $path): FileAttributes
    {
        $fileSize = (int) $this->propFind($path, 'file_size', '{DAV:}getcontentlength');

return new FileAttributes($path, fileSize: $fileSize);
    }

public function listContents(string $path, bool $deep): iterable
    {
        $location = $this->encodePath($this->prefixer->prefixDirectoryPath($path));
        $response = $this->client->propFind($location, self::FIND_PROPERTIES, 1);

// This is the directory itself, the files are subsequent entries.
        array_shift($response);

foreach ($response as $path => $object) {
            $path = (string) parse_url(rawurldecode($path), PHP_URL_PATH);
            $path = $this->prefixer->stripPrefix($path);
            $object = $this->normalizeObject($object);

if ($this->propsIsDirectory($object)) {
                yield new DirectoryAttributes($path, lastModified: $object['last_modified'] ?? null);

if ( ! $deep) {
                    continue;
                }

foreach ($this->listContents($path, true) as $child) {
                    yield $child;
                }
            } else {
                yield new FileAttributes(
                    $path,
                    fileSize:     $object['file_size'] ?? null,
                    lastModified: $object['last_modified'] ?? null,
                    mimeType:     $object['mime_type'] ?? null,
                );
            }
        }
    }

private function normalizeObject(array $object): array
    {
        $mapping = [
            '{DAV:}getcontentlength' => 'file_size',
            '{DAV:}getcontenttype' => 'mime_type',
            'content-length' => 'file_size',
            'content-type' => 'mime_type',
        ];

foreach ($mapping as $from => $to) {
            if (array_key_exists($from, $object)) {
                $object[$to] = $object[$from];
            }
        }

array_key_exists('file_size', $object) && $object['file_size'] = (int) $object['file_size'];

if (array_key_exists('{DAV:}getlastmodified', $object)) {
            $object['last_modified'] = strtotime($object['{DAV:}getlastmodified']);
        }

return $object;
    }

public function move(string $source, string $destination, Config $config): void
    {
        if ($source === $destination) {
            return;
        }

if ($this->manualMove) {
            $this->manualMove($source, $destination);

return;
        }

$this->createParentDirFor($destination);
        $location = $this->encodePath($this->prefixer->prefixPath($source));
        $newLocation = $this->encodePath($this->prefixer->prefixPath($destination));

try {
            $response = $this->client->request('MOVE', $location, null, [
                'Destination' => $this->client->getAbsoluteUrl($newLocation),
            ]);

if ($response['statusCode'] < 200 || $response['statusCode'] >= 300) {
                throw new RuntimeException('MOVE command returned unexpected status code: ' . $response['statusCode'] . "\n{$response['body']}");
            }
        } catch (Throwable $e) {
            throw UnableToMoveFile::fromLocationTo($source, $destination, $e);
        }
    }

private function manualMove(string $source, string $destination): void
    {
        try {
            $handle = $this->readStream($source);
            $this->writeStream($destination, $handle, new Config());
            @fclose($handle);
            $this->delete($source);
        } catch (Throwable $exception) {
            throw UnableToMoveFile::fromLocationTo($source, $destination, $exception);
        }
    }

public function copy(string $source, string $destination, Config $config): void
    {
        if ($source === $destination) {
            return;
        }

if ($this->manualCopy) {
            $this->manualCopy($source, $destination);

return;
        }

try {
            $response = $this->client->request('COPY', $location, null, [
                'Destination' => $this->client->getAbsoluteUrl($newLocation),
            ]);

if ($response['statusCode'] < 200 || $response['statusCode'] >= 300) {
                throw new RuntimeException('COPY command returned unexpected status code: ' . $response['statusCode']);
            }
        } catch (Throwable $e) {
            throw UnableToCopyFile::fromLocationTo($source, $destination, $e);
        }
    }

private function manualCopy(string $source, string $destination): void
    {
        try {
            $handle = $this->readStream($source);
            $this->writeStream($destination, $handle, new Config());
            @fclose($handle);
        } catch (Throwable $exception) {
            throw UnableToCopyFile::fromLocationTo($source, $destination, $exception);
        }
    }

private function propsIsDirectory(array $properties): bool
    {
        if (isset($properties['{DAV:}resourcetype'])) {
            /** @var ResourceType $resourceType */
            $resourceType = $properties['{DAV:}resourcetype'];

return $resourceType->is('{DAV:}collection');
        }

return isset($properties['{DAV:}iscollection']) && $properties['{DAV:}iscollection'] === '1';
    }

private function createParentDirFor(string $path): void
    {
        $dirname = dirname($path);

if ($this->directoryExists($dirname)) {
            return;
        }

$this->createDirectory($dirname, new Config());
    }

private function propFind(string $path, string $section, string $property): mixed
    {
        $location = $this->encodePath($this->prefixer->prefixPath($path));

try {
            $result = $this->client->propFind($location, [$property]);

if ( ! array_key_exists($property, $result)) {
                throw new RuntimeException('Invalid response, missing key: ' . $property);
            }

return $result[$property];
        } catch (Throwable $exception) {
            throw UnableToRetrieveMetadata::create($path, $section, $exception->getMessage(), $exception);
        }
    }

public function publicUrl(string $path, Config $config): string
    {
        return $this->client->getAbsoluteUrl($this->encodePath($this->prefixer->prefixPath($path)));
    }
}

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