Issues in AjaxDispatcher.php (master) - Issues in master - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

Issues (4122)

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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.

includes/AjaxDispatcher.php (3 issues)

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<?php
/**
 * Handle ajax requests and send them to the proper handler.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Ajax
 */

/**
 * @defgroup Ajax Ajax
 */

/**
 * Object-Oriented Ajax functions.
 * @ingroup Ajax
 */
class AjaxDispatcher {
	/**
	 * The way the request was made, either a 'get' or a 'post'
	 * @var string $mode
	 */
	private $mode;

	/**
	 * Name of the requested handler
	 * @var string $func_name
	 */
	private $func_name;

	/** Arguments passed
	 * @var array $args
	 */
	private $args;

	/**
	 * @var Config
	 */
	private $config;

	/**
	 * Load up our object with user supplied data
	 */
	function __construct( Config $config ) {
// Bad
class Router
{
    public function generate($path)
    {
        return $_SERVER['HOST'].$path;
    }
}

// Better
class Router
{
    private $host;

    public function __construct($host)
    {
        $this->host = $host;
    }

    public function generate($path)
    {
        return $this->host.$path;
    }
}

class Controller
{
    public function myAction(Request $request)
    {
        // Instead of
        $page = isset($_GET['page']) ? intval($_GET['page']) : 1;

        // Better (assuming you use the Symfony2 request)
        $page = $request->query->get('page', 1);
    }
}
		$this->config = $config;

		$this->mode = "";

		if ( !empty( $_GET["rs"] ) ) {
			$this->mode = "get";
		}

		if ( !empty( $_POST["rs"] ) ) {
			$this->mode = "post";
		}

		switch ( $this->mode ) {
			case 'get':
				$this->func_name = isset( $_GET["rs"] ) ? $_GET["rs"] : '';
				if ( !empty( $_GET["rsargs"] ) ) {
					$this->args = $_GET["rsargs"];
				} else {
					$this->args = [];
				}
				break;
			case 'post':
				$this->func_name = isset( $_POST["rs"] ) ? $_POST["rs"] : '';
				if ( !empty( $_POST["rsargs"] ) ) {
					$this->args = $_POST["rsargs"];
				} else {
					$this->args = [];
				}
				break;
			default:
				return;
				# Or we could throw an exception:
				# throw new MWException( __METHOD__ . ' called without any data (mode empty).' );
		}
	}

	/**
	 * Pass the request to our internal function.
	 * BEWARE! Data are passed as they have been supplied by the user,
	 * they should be carefully handled in the function processing the
	 * request.
	 *
	 * @param User $user
	 */
	function performAction( User $user ) {
		if ( empty( $this->mode ) ) {
			return;
		}

		if ( !in_array( $this->func_name, $this->config->get( 'AjaxExportList' ) ) ) {
			wfDebug( __METHOD__ . ' Bad Request for unknown function ' . $this->func_name . "\n" );
			wfHttpError(
				400,
				'Bad Request',
				"unknown function " . $this->func_name
			);
		} elseif ( !User::isEveryoneAllowed( 'read' ) && !$user->isAllowed( 'read' ) ) {
			wfHttpError(
				403,
				'Forbidden',
				'You are not allowed to view pages.' );
		} else {
			wfDebug( __METHOD__ . ' dispatching ' . $this->func_name . "\n" );
			try {
				$result = call_user_func_array( $this->func_name, $this->args );

				if ( $result === false || $result === null ) {
					wfDebug( __METHOD__ . ' ERROR while dispatching ' .
						$this->func_name . "(" . var_export( $this->args, true ) . "): " .
						"no data returned\n" );

					wfHttpError( 500, 'Internal Error',
						"{$this->func_name} returned no data" );
				} else {
					if ( is_string( $result ) ) {
						$result = new AjaxResponse( $result );
					}

					// Make sure DB commit succeeds before sending a response
					wfGetLBFactory()->commitMasterChanges( __METHOD__ );


					$result->sendHeaders();
					$result->printText();

					wfDebug( __METHOD__ . ' dispatch complete for ' . $this->func_name . "\n" );
				}
			} catch ( Exception $e ) {
				wfDebug( __METHOD__ . ' ERROR while dispatching ' .
					$this->func_name . "(" . var_export( $this->args, true ) . "): " .
					get_class( $e ) . ": " . $e->getMessage() . "\n" );

				if ( !headers_sent() ) {
					wfHttpError( 500, 'Internal Error',
						$e->getMessage() );
				} else {
					print $e->getMessage();
				}
			}
		}
	}
}


1		<?php
2		/**
3		* Handle ajax requests and send them to the proper handler.
4		*
5		* This program is free software; you can redistribute it and/or modify
6		* it under the terms of the GNU General Public License as published by
7		* the Free Software Foundation; either version 2 of the License, or
8		* (at your option) any later version.
9		*
10		* This program is distributed in the hope that it will be useful,
11		* but WITHOUT ANY WARRANTY; without even the implied warranty of
12		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13		* GNU General Public License for more details.
14		*
15		* You should have received a copy of the GNU General Public License along
16		* with this program; if not, write to the Free Software Foundation, Inc.,
17		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18		* http://www.gnu.org/copyleft/gpl.html
19		*
20		* @file
21		* @ingroup Ajax
22		*/
23
24		/**
25		* @defgroup Ajax Ajax
26		*/
27
28		/**
29		* Object-Oriented Ajax functions.
30		* @ingroup Ajax
31		*/
32		class AjaxDispatcher {
33		/**
34		* The way the request was made, either a 'get' or a 'post'
35		* @var string $mode
36		*/
37		private $mode;
38
39		/**
40		* Name of the requested handler
41		* @var string $func_name
42		*/
43		private $func_name;
44
45		/** Arguments passed
46		* @var array $args
47		*/
48		private $args;
49
50		/**
51		* @var Config
52		*/
53		private $config;
54
55		/**
56		* Load up our object with user supplied data
57		*/
58		function __construct( Config $config ) {
		0 ignored issues – show Coding Style introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this `__construct` uses the super-global variable `$_GET` which is generally not recommended. Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad class Router { public function generate($path) { return $_SERVER['HOST'].$path; } } // Better class Router { private $host; public function __construct($host) { $this->host = $host; } public function generate($path) { return $this->host.$path; } } class Controller { public function myAction(Request $request) { // Instead of $page = isset($_GET['page']) ? intval($_GET['page']) : 1; // Better (assuming you use the Symfony2 request) $page = $request->query->get('page', 1); } } Loading history... Coding Style introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report Show Similar Issues like this `__construct` uses the super-global variable `$_POST` which is generally not recommended. Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad class Router { public function generate($path) { return $_SERVER['HOST'].$path; } } // Better class Router { private $host; public function __construct($host) { $this->host = $host; } public function generate($path) { return $this->host.$path; } } class Controller { public function myAction(Request $request) { // Instead of $page = isset($_GET['page']) ? intval($_GET['page']) : 1; // Better (assuming you use the Symfony2 request) $page = $request->query->get('page', 1); } } Loading history...
59		$this->config = $config;
60
61		$this->mode = "";
62
63		if ( !empty( $_GET["rs"] ) ) {
64		$this->mode = "get";
65		}
66
67		if ( !empty( $_POST["rs"] ) ) {
68		$this->mode = "post";
69		}
70
71		switch ( $this->mode ) {
72	View Code Duplication	case 'get':
73		$this->func_name = isset( $_GET["rs"] ) ? $_GET["rs"] : '';
74		if ( !empty( $_GET["rsargs"] ) ) {
75		$this->args = $_GET["rsargs"];
76		} else {
77		$this->args = [];
78		}
79		break;
80	View Code Duplication	case 'post':
81		$this->func_name = isset( $_POST["rs"] ) ? $_POST["rs"] : '';
82		if ( !empty( $_POST["rsargs"] ) ) {
83		$this->args = $_POST["rsargs"];
84		} else {
85		$this->args = [];
86		}
87		break;
88		default:
89		return;
90		# Or we could throw an exception:
91		# throw new MWException( __METHOD__ . ' called without any data (mode empty).' );
92		}
93		}
94
95		/**
96		* Pass the request to our internal function.
97		* BEWARE! Data are passed as they have been supplied by the user,
98		* they should be carefully handled in the function processing the
99		* request.
100		*
101		* @param User $user
102		*/
103		function performAction( User $user ) {
104		if ( empty( $this->mode ) ) {
105		return;
106		}
107
108		if ( !in_array( $this->func_name, $this->config->get( 'AjaxExportList' ) ) ) {
109		wfDebug( __METHOD__ . ' Bad Request for unknown function ' . $this->func_name . "\n" );
110		wfHttpError(
111		400,
112		'Bad Request',
113		"unknown function " . $this->func_name
114		);
115		} elseif ( !User::isEveryoneAllowed( 'read' ) && !$user->isAllowed( 'read' ) ) {
116		wfHttpError(
117		403,
118		'Forbidden',
119		'You are not allowed to view pages.' );
120		} else {
121		wfDebug( __METHOD__ . ' dispatching ' . $this->func_name . "\n" );
122		try {
123		$result = call_user_func_array( $this->func_name, $this->args );
124
125		if ( $result === false \|\| $result === null ) {
126		wfDebug( __METHOD__ . ' ERROR while dispatching ' .
127		$this->func_name . "(" . var_export( $this->args, true ) . "): " .
128		"no data returned\n" );
129
130		wfHttpError( 500, 'Internal Error',
131		"{$this->func_name} returned no data" );
132		} else {
133		if ( is_string( $result ) ) {
134		$result = new AjaxResponse( $result );
135		}
136
137		// Make sure DB commit succeeds before sending a response
138		wfGetLBFactory()->commitMasterChanges( __METHOD__ );
		0 ignored issues – show Deprecated Code introduced 2016-04-11 17:35 UTC by Report Bug Copy Issue Report Show Similar Issues like this The function `wfGetLBFactory()` has been deprecated with message: since 1.27, use MediaWikiServices::getDBLoadBalancerFactory() instead. This function has been deprecated. The supplier of the file has supplied an explanatory message. The explanatory message should give you some clue as to whether and when the function will be removed from the class and what other function to use instead. Loading history...
139
140		$result->sendHeaders();
141		$result->printText();
142
143		wfDebug( __METHOD__ . ' dispatch complete for ' . $this->func_name . "\n" );
144		}
145		} catch ( Exception $e ) {
146		wfDebug( __METHOD__ . ' ERROR while dispatching ' .
147		$this->func_name . "(" . var_export( $this->args, true ) . "): " .
148		get_class( $e ) . ": " . $e->getMessage() . "\n" );
149
150		if ( !headers_sent() ) {
151		wfHttpError( 500, 'Internal Error',
152		$e->getMessage() );
153		} else {
154		print $e->getMessage();
155		}
156		}
157		}
158		}
159		}
160

wikimedia / mediawiki

Issues (4122)

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includes/AjaxDispatcher.php (3 issues)

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