1 files changed, 104 insertions, 0 deletions
diff --git a/lib/private/Preview/Office.php b/lib/private/Preview/Office.php
new file mode 100644
index 00000000000..6496e091b1d
--- /dev/null
+++ b/lib/private/Preview/Office.php
@@ -0,0 +1,104 @@
+<?php
+/**
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Olivier Paroz <github@oparoz.com>
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * 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\Preview;
+
+abstract class Office extends Provider {
+	private $cmd;
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
+		$this->initCmd();
+		if (is_null($this->cmd)) {
+			return false;
+		}
+
+		$absPath = $fileview->toTmpFile($path);
+
+		$tmpDir = \OC::$server->getTempManager()->getTempBaseDir();
+
+		$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId() . '/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ';
+		$clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);
+
+		$exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath);
+
+		shell_exec($exec);
+
+		//create imagick object from pdf
+		$pdfPreview = null;
+		try {
+			list($dirname, , , $filename) = array_values(pathinfo($absPath));
+			$pdfPreview = $dirname . '/' . $filename . '.pdf';
+
+			$pdf = new \imagick($pdfPreview . '[0]');
+			$pdf->setImageFormat('jpg');
+		} catch (\Exception $e) {
+			unlink($absPath);
+			unlink($pdfPreview);
+			\OCP\Util::writeLog('core', $e->getmessage(), \OCP\Util::ERROR);
+			return false;
+		}
+
+		$image = new \OC_Image();
+		$image->loadFromData($pdf);
+
+		unlink($absPath);
+		unlink($pdfPreview);
+
+		if ($image->valid()) {
+			$image->scaleDownToFit($maxX, $maxY);
+
+			return $image;
+		}
+		return false;
+
+	}
+
+	private function initCmd() {
+		$cmd = '';
+
+		$libreOfficePath = \OC::$server->getConfig()->getSystemValue('preview_libreoffice_path', null);
+		if (is_string($libreOfficePath)) {
+			$cmd = $libreOfficePath;
+		}
+
+		$whichLibreOffice = shell_exec('command -v libreoffice');
+		if ($cmd === '' && !empty($whichLibreOffice)) {
+			$cmd = 'libreoffice';
+		}
+
+		$whichOpenOffice = shell_exec('command -v openoffice');
+		if ($cmd === '' && !empty($whichOpenOffice)) {
+			$cmd = 'openoffice';
+		}
+
+		if ($cmd === '') {
+			$cmd = null;
+		}
+
+		$this->cmd = $cmd;
+	}
+}