Issues in ConditionNode.php (develop) - Issues in develop - mishal/iless - Measure and Improve Code Quality continuously with Scrutinizer

Issues (191)

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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.

lib/ILess/Node/ConditionNode.php (1 issue)

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<?php

/*
 * This file is part of the ILess
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace ILess\Node;

use ILess\Context;
use ILess\Node;
use ILess\Util;
use ILess\Visitor\VisitorInterface;

/**
 * Condition.
 */
class ConditionNode extends Node
{
    /**
     * Node type.
     *
     * @var string
     */
    protected $type = 'Condition';

    /**
     * The operator.
     *
     * @var string
     */
    private $op;

    /**
     * The left operand.
     *
     * @var Node
     */
    private $lvalue;

    /**
     * The right operand.
     *
     * @var Node
     */
    private $rvalue;

    /**
     * Current index.
     *
     * @var int
     */
    private $index = 0;

    /**
     * Negate the result?
     *
     * @var bool
     */
    private $negate = false;

    /**
     * Constructor.
     *
     * @param string $op The operator
     * @param Node $l The left operand
     * @param Node $r The right operand
     * @param int $i
     * @param bool $negate
     */
    public function __construct($op, Node $l, Node $r, $i = 0, $negate = false)
    {
        $this->op = trim($op);
        $this->lvalue = $l;
        $this->rvalue = $r;
        $this->index = $i;
        $this->negate = (boolean) $negate;
    }

    /**
     * {@inheritdoc}
     */
    public function accept(VisitorInterface $visitor)
    {
        $this->lvalue = $visitor->visit($this->lvalue);
        $this->rvalue = $visitor->visit($this->rvalue);
    }

    /**
     * Compiles the node.
     *
     * @param Context $context The context
     * @param array|null $arguments Array of arguments
     * @param bool|null $important Important flag
     *
     * @return bool
     */
    public function compile(Context $context, $arguments = null, $important = null)
    {
        $a = $this->lvalue->compile($context);
        $b = $this->rvalue->compile($context);

        switch ($this->op) {
            case 'and':
                $result = $a && $b;
                break;
            case 'or':
                $result = $a || $b;
                break;
            default:
                $compared = Util::compareNodes($a, $b);
                // strict comparison, we cannot use switch here
                if ($compared === -1) {
                    $result = $this->op === '<' || $this->op === '=<' || $this->op === '<=';
                } elseif ($compared === 0) {
                    $result = $this->op === '=' || $this->op === '>=' || $this->op === '=<' || $this->op === '<=';
                } elseif ($compared === 1) {
                    $result = $this->op === '>' || $this->op === '>=' || $this->op === '=>';
                } else {
                    $result = false;
                }
                break;
        }

        return $this->negate ? !$result : $result;
class Author {
    private $name;

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

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }
}


1			<?php
2
3			/*
4			* This file is part of the ILess
5			*
6			* For the full copyright and license information, please view the LICENSE
7			* file that was distributed with this source code.
8			*/
9
10			namespace ILess\Node;
11
12			use ILess\Context;
13			use ILess\Node;
14			use ILess\Util;
15			use ILess\Visitor\VisitorInterface;
16
17			/**
18			* Condition.
19			*/
20			class ConditionNode extends Node
21			{
22			/**
23			* Node type.
24			*
25			* @var string
26			*/
27			protected $type = 'Condition';
28
29			/**
30			* The operator.
31			*
32			* @var string
33			*/
34			private $op;
35
36			/**
37			* The left operand.
38			*
39			* @var Node
40			*/
41			private $lvalue;
42
43			/**
44			* The right operand.
45			*
46			* @var Node
47			*/
48			private $rvalue;
49
50			/**
51			* Current index.
52			*
53			* @var int
54			*/
55			private $index = 0;
56
57			/**
58			* Negate the result?
59			*
60			* @var bool
61			*/
62			private $negate = false;
63
64			/**
65			* Constructor.
66			*
67			* @param string $op The operator
68			* @param Node $l The left operand
69			* @param Node $r The right operand
70			* @param int $i
71			* @param bool $negate
72			*/
73			public function __construct($op, Node $l, Node $r, $i = 0, $negate = false)
74			{
75			$this->op = trim($op);
76			$this->lvalue = $l;
77			$this->rvalue = $r;
78			$this->index = $i;
79			$this->negate = (boolean) $negate;
80			}
81
82			/**
83			* {@inheritdoc}
84			*/
85			public function accept(VisitorInterface $visitor)
86			{
87			$this->lvalue = $visitor->visit($this->lvalue);
88			$this->rvalue = $visitor->visit($this->rvalue);
89			}
90
91			/**
92			* Compiles the node.
93			*
94			* @param Context $context The context
95			* @param array\|null $arguments Array of arguments
96			* @param bool\|null $important Important flag
97			*
98			* @return bool
99			*/
100			public function compile(Context $context, $arguments = null, $important = null)
101			{
102			$a = $this->lvalue->compile($context);
103			$b = $this->rvalue->compile($context);
104
105			switch ($this->op) {
106			case 'and':
107			$result = $a && $b;
108			break;
109			case 'or':
110			$result = $a \|\| $b;
111			break;
112			default:
113			$compared = Util::compareNodes($a, $b);
114			// strict comparison, we cannot use switch here
115			if ($compared === -1) {
116			$result = $this->op === '<' \|\| $this->op === '=<' \|\| $this->op === '<=';
117			} elseif ($compared === 0) {
118			$result = $this->op === '=' \|\| $this->op === '>=' \|\| $this->op === '=<' \|\| $this->op === '<=';
119			} elseif ($compared === 1) {
120			$result = $this->op === '>' \|\| $this->op === '>=' \|\| $this->op === '=>';
121			} else {
122			$result = false;
123			}
124			break;
125			}
126
127			return $this->negate ? !$result : $result;
			0 ignored issues – show Bug Best Practice introduced 2016-03-10 07:34 UTC by Report Bug Copy Issue Report Show Similar Issues like this The return type of `return $this->negate ? !$result : $result;` (`boolean`) is incompatible with the return type declared by the interface `ILess\Node\CompilableInterface::compile` of type `ILess\Node`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
128			}
129			}
130

mishal / iless

Issues (191)

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lib/ILess/Node/ConditionNode.php (1 issue)

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