Issues in Scanner.php (master) - Issues in master - owncloud/core - Measure and Improve Code Quality continuously with Scrutinizer

Issues (1798)

Security Analysis not enabled

Cross-Site Scripting

Cross-Site Scripting enables an attacker to inject code into the response of a web-request that is viewed by other users. It can for example be used to bypass access controls, or even to take over other users' accounts.

File Exposure

File Exposure allows an attacker to gain access to local files that he should not be able to access. These files can for example include database credentials, or other configuration files.

File Manipulation

File Manipulation enables an attacker to write custom data to files. This potentially leads to injection of arbitrary code on the server.

Object Injection

Object Injection enables an attacker to inject an object into PHP code, and can lead to arbitrary code execution, file exposure, or file manipulation attacks.

Code Injection

Code Injection enables an attacker to execute arbitrary code on the server.

Response Splitting

Response Splitting can be used to send arbitrary responses.

File Inclusion

File Inclusion enables an attacker to inject custom files into PHP's file loading mechanism, either explicitly passed to include, or for example via PHP's auto-loading mechanism.

Command Injection

Command Injection enables an attacker to inject a shell command that is execute with the privileges of the web-server. This can be used to expose sensitive data, or gain access of your server.

SQL Injection

SQL Injection enables an attacker to execute arbitrary SQL code on your database server gaining access to user data, or manipulating user data.

XPath Injection

XPath Injection enables an attacker to modify the parts of XML document that are read. If that XML document is for example used for authentication, this can lead to further vulnerabilities similar to SQL Injection.

LDAP Injection

LDAP Injection enables an attacker to inject LDAP statements potentially granting permission to run unauthorized queries, or modify content inside the LDAP tree.

Header Injection

Other Vulnerability

This category comprises other attack vectors such as manipulating the PHP runtime, loading custom extensions, freezing the runtime, or similar.

Regex Injection

Regex Injection enables an attacker to execute arbitrary code in your PHP process.

XML Injection

XML Injection enables an attacker to read files on your local filesystem including configuration files, or can be abused to freeze your web-server process.

Variable Injection

Variable Injection enables an attacker to overwrite program variables with custom data, and can lead to further vulnerabilities.

Unfortunately, the security analysis is currently not available for your project. If you are a non-commercial open-source project, please contact support to gain access.

apps/files_sharing/lib/Scanner.php (1 issue)

Labels

Bug 1

Severity

Minor 1

Roeland Jago Douma 1

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<?php
/**
 * @author Joas Schilling <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Roeland Jago Douma <[email protected]>
 * @author Vincent Petry <[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 OCA\Files_Sharing;

use OC\Files\ObjectStore\NoopScanner;
use OC\Files\Cache\Scanner as CacheScanner;

/**
 * Scanner for SharedStorage
 */
class Scanner extends CacheScanner {

	/**
	 * @var null|CacheScanner
	 */
	private $sourceScanner;

	/**
	 * Scan a single file and use source scanner if needed
	 *
	 * @inheritdoc
	 */
	public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true) {
		$sourceScanner = $this->getSourceScanner();
		if ($sourceScanner instanceof NoopScanner) {
			// No Operation Scanner will not update share permission (scanFile won't call getData)
			list(, $internalPath) = $this->storage->resolvePath($file);
			return $sourceScanner->scanFile($internalPath, $reuseExisting, $parentId, $cacheData, $lock);
		} else {
			return parent::scanFile($file, $reuseExisting, $parentId, $cacheData, $lock);
		}
	}

	/**
	 * Returns metadata from the shared storage, but
	 * with permissions from the source storage.
	 *
	 * NOTE: This function gets called from within scanFile parent function
	 *
	 * @inheritdoc
	 */
	protected function getData($path) {
		$data = parent::getData($path);
		if ($data === null) {
			return null;
		}
		list($sourceStorage, $internalPath) = $this->storage->resolvePath($path);
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
		$data['permissions'] = $sourceStorage->getPermissions($internalPath);
		return $data;
	}

	private function getSourceScanner() {
		if ($this->sourceScanner) {
			return $this->sourceScanner;
		}
		if ($this->storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
			/** @var \OC\Files\Storage\Storage $storage */
			list($storage) = $this->storage->resolvePath('');
			$this->sourceScanner = $storage->getScanner();
			return $this->sourceScanner;
		} else {
			return null;
		}
	}
}


1			<?php
2			/**
3			* @author Joas Schilling <[email protected]>
4			* @author Morris Jobke <[email protected]>
5			* @author Robin Appelman <[email protected]>
6			* @author Roeland Jago Douma <[email protected]>
7			* @author Vincent Petry <[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
26			namespace OCA\Files_Sharing;
27
28			use OC\Files\ObjectStore\NoopScanner;
29			use OC\Files\Cache\Scanner as CacheScanner;
30
31			/**
32			* Scanner for SharedStorage
33			*/
34			class Scanner extends CacheScanner {
35
36			/**
37			* @var null\|CacheScanner
38			*/
39			private $sourceScanner;
40
41			/**
42			* Scan a single file and use source scanner if needed
43			*
44			* @inheritdoc
45			*/
46			public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true) {
47			$sourceScanner = $this->getSourceScanner();
48			if ($sourceScanner instanceof NoopScanner) {
49			// No Operation Scanner will not update share permission (scanFile won't call getData)
50			list(, $internalPath) = $this->storage->resolvePath($file);
51			return $sourceScanner->scanFile($internalPath, $reuseExisting, $parentId, $cacheData, $lock);
52			} else {
53			return parent::scanFile($file, $reuseExisting, $parentId, $cacheData, $lock);
54			}
55			}
56
57			/**
58			* Returns metadata from the shared storage, but
59			* with permissions from the source storage.
60			*
61			* NOTE: This function gets called from within scanFile parent function
62			*
63			* @inheritdoc
64			*/
65			protected function getData($path) {
66			$data = parent::getData($path);
67			if ($data === null) {
68			return null;
69			}
70			list($sourceStorage, $internalPath) = $this->storage->resolvePath($path);
			0 ignored issues – show Bug introduced 2016-06-01 12:46 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like you code against a concrete implementation and not the interface `OC\Files\Storage\Storage` as the method `resolvePath()` does only exist in the following implementations of said interface: `OCA\Files_Sharing\SharedStorage`, `OC\Files\Storage\Wrapper\Jail`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
71			$data['permissions'] = $sourceStorage->getPermissions($internalPath);
72			return $data;
73			}
74
75			private function getSourceScanner() {
76			if ($this->sourceScanner) {
77			return $this->sourceScanner;
78			}
79			if ($this->storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
80			/** @var \OC\Files\Storage\Storage $storage */
81			list($storage) = $this->storage->resolvePath('');
82			$this->sourceScanner = $storage->getScanner();
83			return $this->sourceScanner;
84			} else {
85			return null;
86			}
87			}
88			}
89

owncloud / core

Issues (1798)

Security Analysis not enabled

apps/files_sharing/lib/Scanner.php (1 issue)

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