Office::getThumbnail() - Code Metrics - Inspection of "Preview via dav" - owncloud/core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#29319)

unknown

created 2018-01-18 11:23 UTC

Office::getThumbnail() B

↳ Parent: Office

Complexity

Conditions	6
Paths	25

Size

Total Lines	55
Code Lines	36

Duplication

Lines	9
Ratio	16.36 %

Importance

Changes

Metric	Value
cc	6
eloc	36
nc	25
nop	4
dl	9
loc	55
rs	8.7752
c	0
b	0
f	0

How to fix Long Method

<?php
/**
 * @author Joas Schilling <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Olivier Paroz <[email protected]>
 * @author Robin McCorkell <[email protected]>
 * @author Thomas Müller <[email protected]>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @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;

use OCP\Files\File;
use OCP\Preview\IProvider2;

abstract class Office implements IProvider2 {
	private $cmd;

	/**
	 * {@inheritDoc}
	 */
	public function getThumbnail(File $file, $maxX, $maxY, $scalingUp) {
		$this->initCmd();
		if (is_null($this->cmd)) {
			return false;
		}

		$useFileDirectly = (!$file->isEncrypted() && !$file->isMounted());
		if ($useFileDirectly) {

			$absPath = $file->getStorage()->getLocalFile($file->getInternalPath());
		} else {
			$absPath = \OC::$server->getTempManager()->getTemporaryFile();

			$handle = $file->fopen('rb');
			file_put_contents($absPath, $handle);
			fclose($handle);
		}

		$tmpDir = \OC::$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 {
			$pathInfo = pathinfo($absPath);
			$pdfPreview = $pathInfo['dirname'] . '/' . $pathInfo['filename'] . '.pdf';

			$pdf = new \imagick($pdfPreview . '[0]');
			$pdf->setImageFormat('jpg');
		} catch (\Exception $e) {
			unlink($absPath);
			@unlink($pdfPreview);
// For example instead of
@mkdir($dir);

// Better use
if (@mkdir($dir) === false) {
    throw new \RuntimeException('The directory '.$dir.' could not be created.');
}
			\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;

	}

	/**
	 * @inheritdoc
	 */
	public function isAvailable(File $file) {
		return true;
	}

	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;
	}
}


1		<?php
2		/**
3		* @author Joas Schilling <[email protected]>
4		* @author Morris Jobke <[email protected]>
5		* @author Olivier Paroz <[email protected]>
6		* @author Robin McCorkell <[email protected]>
7		* @author Thomas Müller <[email protected]>
8		*
9		* @copyright Copyright (c) 2018, ownCloud GmbH
10		* @license AGPL-3.0
11		*
12		* This code is free software: you can redistribute it and/or modify
13		* it under the terms of the GNU Affero General Public License, version 3,
14		* as published by the Free Software Foundation.
15		*
16		* This program is distributed in the hope that it will be useful,
17		* but WITHOUT ANY WARRANTY; without even the implied warranty of
18		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19		* GNU Affero General Public License for more details.
20		*
21		* You should have received a copy of the GNU Affero General Public License, version 3,
22		* along with this program. If not, see <http://www.gnu.org/licenses/>
23		*
24		*/
25		namespace OC\Preview;
26
27		use OCP\Files\File;
28		use OCP\Preview\IProvider2;
29
30		abstract class Office implements IProvider2 {
31		private $cmd;
32
33		/**
34		* {@inheritDoc}
35		*/
36		public function getThumbnail(File $file, $maxX, $maxY, $scalingUp) {
37		$this->initCmd();
38		if (is_null($this->cmd)) {
39		return false;
40		}
41
42		$useFileDirectly = (!$file->isEncrypted() && !$file->isMounted());
43	View Code Duplication	if ($useFileDirectly) {
		0 ignored issues – show Duplication introduced 2017-10-20 16:08 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
44		$absPath = $file->getStorage()->getLocalFile($file->getInternalPath());
45		} else {
46		$absPath = \OC::$server->getTempManager()->getTemporaryFile();
47
48		$handle = $file->fopen('rb');
49		file_put_contents($absPath, $handle);
50		fclose($handle);
51		}
52
53		$tmpDir = \OC::$server->getTempManager()->getTempBaseDir();
54
55		$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId() . '/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ';
56		$clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);
57
58		$exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath);
59
60		shell_exec($exec);
61
62		//create imagick object from pdf
63		$pdfPreview = null;
64		try {
65		$pathInfo = pathinfo($absPath);
66		$pdfPreview = $pathInfo['dirname'] . '/' . $pathInfo['filename'] . '.pdf';
67
68		$pdf = new \imagick($pdfPreview . '[0]');
69		$pdf->setImageFormat('jpg');
70		} catch (\Exception $e) {
71		unlink($absPath);
72		@unlink($pdfPreview);
		0 ignored issues – show Security Best Practice introduced 2017-10-20 18:33 UTC by Report Bug Copy Issue Report It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended. If you suppress an error, we recommend checking for the error condition explicitly: // For example instead of @mkdir($dir); // Better use if (@mkdir($dir) === false) { throw new \RuntimeException('The directory '.$dir.' could not be created.'); } Loading history...
73		\OCP\Util::writeLog('core', $e->getmessage(), \OCP\Util::ERROR);
74		return false;
75		}
76
77		$image = new \OC_Image();
78		$image->loadFromData($pdf);
79
80		unlink($absPath);
81		unlink($pdfPreview);
82
83		if ($image->valid()) {
84		$image->scaleDownToFit($maxX, $maxY);
85
86		return $image;
87		}
88		return false;
89
90		}
91
92		/**
93		* @inheritdoc
94		*/
95		public function isAvailable(File $file) {
96		return true;
97		}
98
99		private function initCmd() {
100		$cmd = '';
101
102		$libreOfficePath = \OC::$server->getConfig()->getSystemValue('preview_libreoffice_path', null);
103		if (is_string($libreOfficePath)) {
104		$cmd = $libreOfficePath;
105		}
106
107		$whichLibreOffice = shell_exec('command -v libreoffice');
108		if ($cmd === '' && !empty($whichLibreOffice)) {
109		$cmd = 'libreoffice';
110		}
111
112		$whichOpenOffice = shell_exec('command -v openoffice');
113		if ($cmd === '' && !empty($whichOpenOffice)) {
114		$cmd = 'openoffice';
115		}
116
117		if ($cmd === '') {
118		$cmd = null;
119		}
120
121		$this->cmd = $cmd;
122		}
123		}
124

owncloud / core

Pull Request — master (#29319)

Office::getThumbnail() B

Complexity

Size

Duplication

Importance

How to fix Long Method

Long Method

Duplication Side-by-Side

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