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112 lines
3.0 KiB
112 lines
3.0 KiB
<?php |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Joas Schilling <coding@schilljs.com> |
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* @author Morris Jobke <hey@morrisjobke.de> |
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* @author Olivier Paroz <github@oparoz.com> |
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* @author Robin McCorkell <robin@mccorkell.me.uk> |
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* @author Roeland Jago Douma <roeland@famdouma.nl> |
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* |
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* @license AGPL-3.0 |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OC\Preview; |
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use OCP\IImage; |
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use OCP\ILogger; |
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use OCP\Files\File; |
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abstract class Office extends ProviderV2 { |
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private $cmd; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage { |
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$this->initCmd(); |
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if (is_null($this->cmd)) { |
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return null; |
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} |
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$absPath = $this->getLocalFile($file); |
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$tmpDir = \OC::$server->getTempManager()->getTempBaseDir(); |
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$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId() . '/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to png --outdir '; |
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$clParameters = \OC::$server->getConfig()->getSystemValue('preview_office_cl_parameters', $defaultParameters); |
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$exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath); |
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shell_exec($exec); |
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//create imagick object from png |
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$pngPreview = null; |
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try { |
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list($dirname, , , $filename) = array_values(pathinfo($absPath)); |
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$pngPreview = $dirname . '/' . $filename . '.png'; |
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$png = new \imagick($pngPreview . '[0]'); |
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$png->setImageFormat('jpg'); |
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} catch (\Exception $e) { |
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$this->cleanTmpFiles(); |
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unlink($pngPreview); |
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\OC::$server->getLogger()->logException($e, [ |
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'level' => ILogger::ERROR, |
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'app' => 'core', |
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]); |
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return null; |
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} |
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$image = new \OC_Image(); |
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$image->loadFromData($png); |
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$this->cleanTmpFiles(); |
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unlink($pngPreview); |
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if ($image->valid()) { |
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$image->scaleDownToFit($maxX, $maxY); |
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return $image; |
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} |
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return null; |
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} |
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private function initCmd() { |
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$cmd = ''; |
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$libreOfficePath = \OC::$server->getConfig()->getSystemValue('preview_libreoffice_path', null); |
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if (is_string($libreOfficePath)) { |
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$cmd = $libreOfficePath; |
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} |
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$whichLibreOffice = shell_exec('command -v libreoffice'); |
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if ($cmd === '' && !empty($whichLibreOffice)) { |
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$cmd = 'libreoffice'; |
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} |
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$whichOpenOffice = shell_exec('command -v openoffice'); |
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if ($cmd === '' && !empty($whichOpenOffice)) { |
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$cmd = 'openoffice'; |
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} |
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if ($cmd === '') { |
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$cmd = null; |
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} |
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$this->cmd = $cmd; |
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} |
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}
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