1 files changed, 108 insertions, 0 deletions
diff --git a/apps/files_sharing/lib/Controller/PublicPreviewController.php b/apps/files_sharing/lib/Controller/PublicPreviewController.php
new file mode 100644
index 00000000000..0c8a2c36c3d
--- /dev/null
+++ b/apps/files_sharing/lib/Controller/PublicPreviewController.php
@@ -0,0 +1,108 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @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\Files_Sharing\Controller;
+
+use OC\PreviewManager;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\Http\FileDisplayResponse;
+use OCP\Constants;
+use OCP\Files\Folder;
+use OCP\Files\NotFoundException;
+use OCP\IRequest;
+use OCP\Share\Exceptions\ShareNotFound;
+use OCP\Share\IManager as ShareManager;
+
+class PublicPreviewController extends Controller {
+
+	/** @var ShareManager */
+	private $shareManager;
+
+	/** @var PreviewManager */
+	private $previewManager;
+
+	public function __construct($appName,
+								IRequest $request,
+								ShareManager $shareManger,
+								PreviewManager $previewManager) {
+		parent::__construct($appName, $request);
+
+		$this->shareManager = $shareManger;
+		$this->previewManager = $previewManager;
+	}
+
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 *
+	 * @param string $file
+	 * @param int $x
+	 * @param int $y
+	 * @param string $t
+	 * @param bool $a
+	 * @return DataResponse|FileDisplayResponse
+	 */
+	public function getPreview(
+		$file = '',
+		$x = 32,
+		$y = 32,
+		$t = '',
+		$a = false
+	) {
+
+		if ($t === '') {
+			return new DataResponse([], Http::STATUS_BAD_REQUEST);
+		}
+
+		if ($x === 0 || $y === 0) {
+			return new DataResponse([], Http::STATUS_BAD_REQUEST);
+		}
+
+		try {
+			$share = $this->shareManager->getShareByToken($t);
+		} catch (ShareNotFound $e) {
+			return new DataResponse([], Http::STATUS_NOT_FOUND);
+		}
+
+		if (($share->getPermissions() & Constants::PERMISSION_READ) === 0) {
+			return new DataResponse([], Http::STATUS_FORBIDDEN);
+		}
+
+		$node = $share->getNode();
+
+		if ($node instanceof Folder) {
+			try {
+				$file = $node->get($file);
+			} catch (NotFoundException $e) {
+				return new DataResponse([], Http::STATUS_NOT_FOUND);
+			}
+		} else {
+			$file = $node;
+		}
+
+		$f = $this->previewManager->getPreview($file, $x, $y, !$a);
+
+		return new FileDisplayResponse($f, Http::STATUS_OK, ['Content-Type' => $f->getMimeType()]);
+	}
+}