dav api

Signed-off-by: Louis Chemineau <[email protected]>

appinfo/info.xml

@@ -10,6 +10,9 @@
 	<author mail="[email protected]">John Molakvoæ</author>
     <namespace>Photos</namespace>
     <category>multimedia</category>
+	<types>
+		<dav/>
+	</types>
 
 	<website>https://github.com/nextcloud/photos</website>
 	<bugs>https://github.com/nextcloud/photos/issues</bugs>
@@ -25,4 +28,10 @@
             <order>1</order>
         </navigation>
     </navigations>
+
+	<sabre>
+		<collections>
+			<collection>OCA\Photos\Sabre\RootCollection</collection>
+		</collections>
+	</sabre>
 </info>

lib/AppInfo/Application.php

@@ -25,6 +25,7 @@
 
 namespace OCA\Photos\AppInfo;
 
+use OCA\DAV\Connector\Sabre\Principal;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
@@ -58,6 +59,8 @@ public function __construct() {
 	}
 
 	public function register(IRegistrationContext $context): void {
+		/** Register $principalBackend for the DAV collection */
+		$context->registerServiceAlias('principalBackend', Principal::class);
 	}
 
 	public function boot(IBootContext $context): void {

lib/Sabre/Album/AlbumPhoto.php

@@ -0,0 +1,95 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Robin Appelman <[email protected]>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Photos\Sabre\Album;
+
+use OCA\Photos\Album\AlbumFile;
+use OCA\Photos\Album\AlbumInfo;
+use OCA\Photos\Album\AlbumMapper;
+use OCP\Files\Folder;
+use OCP\Files\Node;
+use OCP\Files\File;
+use OCP\Files\NotFoundException;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\IFile;
+
+class AlbumPhoto implements IFile {
+	private AlbumMapper $albumMapper;
+	private AlbumInfo $album;
+	private AlbumFile $file;
+	private Folder $userFolder;
+
+	public function __construct(AlbumMapper $albumMapper, AlbumInfo $album, AlbumFile $file, Folder $userFolder) {
+		$this->albumMapper = $albumMapper;
+		$this->album = $album;
+		$this->file = $file;
+		$this->userFolder = $userFolder;
+	}
+
+	public function delete() {
+		$this->albumMapper->removeFile($this->album->getId(), $this->file->getFileId());
+	}
+
+	public function getName() {
+		return $this->file->getName();
+	}
+
+	public function setName($name) {
+		throw new Forbidden('Can\'t rename photos trough the album api');
+	}
+
+	public function getLastModified() {
+		return $this->file->getMTime();
+	}
+
+	public function put($data) {
+		throw new Forbidden('Can\'t write to photos trough the album api');
+	}
+
+	public function get() {
+		$nodes = $this->userFolder->getById($this->file->getFileId());
+		$node = current($nodes);
+		if ($node) {
+			/** @var Node $node */
+			if ($node instanceof File) {
+				return $node->fopen('r');
+			} else {
+				throw new NotFoundException("Photo is a folder");
+			}
+		} else {
+			throw new NotFoundException("Photo not found for user");
+		}
+	}
+
+	public function getContentType() {
+		return $this->file->getMimeType();
+	}
+
+	public function getETag() {
+		return $this->file->getEtag();
+	}
+
+	public function getSize() {
+		return $this->file->getSize();
+	}
+}

lib/Sabre/Album/AlbumRoot.php

@@ -0,0 +1,117 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Robin Appelman <[email protected]>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Photos\Sabre\Album;
+
+use OCA\DAV\Connector\Sabre\File;
+use OCA\Photos\Album\AlbumFile;
+use OCA\Photos\Album\AlbumMapper;
+use OCA\Photos\Album\AlbumWithFiles;
+use OCP\Files\Folder;
+use OCP\Files\IRootFolder;
+use OCP\IUser;
+use Sabre\DAV\Exception\Conflict;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\ICollection;
+use Sabre\DAV\ICopyTarget;
+use Sabre\DAV\INode;
+
+class AlbumRoot implements ICollection, ICopyTarget {
+	private AlbumMapper $albumMapper;
+	private AlbumWithFiles $album;
+	private IRootFolder $rootFolder;
+	private Folder $userFolder;
+	private IUser $user;
+
+	public function __construct(AlbumMapper $albumMapper, AlbumWithFiles $album, IRootFolder $rootFolder, Folder $userFolder, IUser $user) {
+		$this->albumMapper = $albumMapper;
+		$this->album = $album;
+		$this->rootFolder = $rootFolder;
+		$this->userFolder = $userFolder;
+		$this->user = $user;
+	}
+
+	public function delete() {
+		$this->albumMapper->delete($this->album->getAlbum()->getId());
+	}
+
+	public function getName(): string {
+		return basename($this->album->getAlbum()->getTitle());
+	}
+
+	public function setName($name) {
+		$this->albumMapper->rename($this->album->getAlbum()->getId(), $name);
+	}
+
+	public function createFile($name, $data = null) {
+		throw new Forbidden('Not allowed to create files in this folder, copy files into this folder instead');
+	}
+
+	public function createDirectory($name) {
+		throw new Forbidden('Not allowed to create directories in this folder');
+	}
+
+	public function getChildren(): array {
+		return array_map(function (AlbumFile $file) {
+			return new AlbumPhoto($this->albumMapper, $this->album->getAlbum(), $file, $this->userFolder);
+		}, $this->album->getFiles());
+	}
+
+	public function getChild($name): AlbumPhoto {
+		foreach ($this->album->getFiles() as $file) {
+			if ($file->getName() === $name) {
+				return new AlbumPhoto($this->albumMapper, $this->album->getAlbum(), $file, $this->userFolder);
+			}
+		}
+		throw new NotFound("$name not found");
+	}
+
+	public function childExists($name): bool {
+		try {
+			$this->getChild($name);
+			return true;
+		} catch (NotFound $e) {
+			return false;
+		}
+	}
+
+	public function getLastModified(): int {
+		return 0;
+	}
+
+	public function copyInto($targetName, $sourcePath, INode $sourceNode): bool {
+		$uid = $this->user->getUID();
+		if ($sourceNode instanceof File) {
+			$sourceId = $sourceNode->getId();
+			if (in_array($sourceId, $this->album->getFileIds())) {
+				throw new Conflict("File $sourceId is already in the folder");
+			}
+			if ($sourceNode->getFileInfo()->getOwner()->getUID() === $uid) {
+				$this->albumMapper->addFile($this->album->getAlbum()->getId(), $sourceId);
+				return true;
+			}
+		}
+		throw new \Exception("Can't add file to album, only files from $uid can be added");
+	}
+}

lib/Sabre/Album/AlbumsHome.php

@@ -0,0 +1,107 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2021 Robin Appelman <[email protected]>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\Photos\Sabre\Album;
+
+use OCA\Photos\Album\AlbumMapper;
+use OCA\Photos\Album\AlbumWithFiles;
+use OCP\Files\Folder;
+use OCP\Files\IRootFolder;
+use OCP\IUser;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\ICollection;
+
+class AlbumsHome implements ICollection {
+	private AlbumMapper $albumMapper;
+	private array $principalInfo;
+	private IUser $user;
+	private IRootFolder $rootFolder;
+	private Folder $userFolder;
+
+	public function __construct(
+		array $principalInfo,
+		AlbumMapper $albumMapper,
+		IUser $user,
+		IRootFolder $rootFolder
+	) {
+		$this->principalInfo = $principalInfo;
+		$this->albumMapper = $albumMapper;
+		$this->user = $user;
+		$this->rootFolder = $rootFolder;
+		$this->userFolder = $rootFolder->getUserFolder($user->getUID());
+	}
+
+	public function delete() {
+		throw new Forbidden();
+	}
+
+	public function getName(): string {
+		return 'albums';
+	}
+
+	public function setName($name) {
+		throw new Forbidden('Permission denied to rename this folder');
+	}
+
+	public function createFile($name, $data = null) {
+		throw new Forbidden('Not allowed to create files in this folder');
+	}
+
+	public function createDirectory($name) {
+		$uid = $this->user->getUID();
+		$this->albumMapper->create($uid, $name);
+	}
+
+	public function getChild($name) {
+		foreach ($this->getChildren() as $child) {
+			if ($child->getName() === $name) {
+				return $child;
+			}
+		}
+
+		throw new NotFound();
+	}
+
+	/**
+	 * @return AlbumRoot[]
+	 */
+	public function getChildren(): array {
+		$folders = $this->albumMapper->getForUserWithFiles($this->user->getUID());
+		return array_map(function (AlbumWithFiles $folder) {
+			return new AlbumRoot($this->albumMapper, $folder, $this->rootFolder, $this->userFolder, $this->user);
+		}, $folders);
+	}
+
+	public function childExists($name): bool {
+		try {
+			$this->getChild($name);
+			return true;
+		} catch (NotFound $e) {
+			return false;
+		}
+	}
+
+	public function getLastModified(): int {
+		return 0;
+	}
+}