Issues in NodeTraverser.php (master) - Issues in master - nikic/PHP-Parser - Measure and Improve Code Quality continuously with Scrutinizer

Issues (110)

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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/PhpParser/NodeTraverser.php (4 issues)

Labels

Duplication 4

Severity

Informational 4

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<?php

namespace PhpParser;

class NodeTraverser implements NodeTraverserInterface
{
    /**
     * @var NodeVisitor[] Visitors
     */
    protected $visitors;

    /**
     * @var bool
     */
    private $cloneNodes;

    /**
     * Constructs a node traverser.
     *
     * @param bool $cloneNodes Should the traverser clone the nodes when traversing the AST
     */
    public function __construct($cloneNodes = false) {
        $this->visitors = array();
        $this->cloneNodes = $cloneNodes;
    }

    /**
     * Adds a visitor.
     *
     * @param NodeVisitor $visitor Visitor to add
     */
    public function addVisitor(NodeVisitor $visitor) {
        $this->visitors[] = $visitor;
    }

    /**
     * Removes an added visitor.
     *
     * @param NodeVisitor $visitor
     */
    public function removeVisitor(NodeVisitor $visitor) {
        foreach ($this->visitors as $index => $storedVisitor) {
            if ($storedVisitor === $visitor) {
                unset($this->visitors[$index]);
                break;
            }
        }
    }

    /**
     * Traverses an array of nodes using the registered visitors.
     *
     * @param Node[] $nodes Array of nodes
     *
     * @return Node[] Traversed array of nodes
     */
    public function traverse(array $nodes) {
        foreach ($this->visitors as $visitor) {

            if (null !== $return = $visitor->beforeTraverse($nodes)) {
                $nodes = $return;
            }
        }

        $nodes = $this->traverseArray($nodes);

        foreach ($this->visitors as $visitor) {

            if (null !== $return = $visitor->afterTraverse($nodes)) {
                $nodes = $return;
            }
        }

        return $nodes;
    }

    protected function traverseNode(Node $node) {
        if ($this->cloneNodes) {
            $node = clone $node;
        }

        foreach ($node->getSubNodeNames() as $name) {
            $subNode =& $node->$name;

            if (is_array($subNode)) {
                $subNode = $this->traverseArray($subNode);
            } elseif ($subNode instanceof Node) {
                $traverseChildren = true;
                foreach ($this->visitors as $visitor) {

                    $return = $visitor->enterNode($subNode);
                    if (self::DONT_TRAVERSE_CHILDREN === $return) {
                        $traverseChildren = false;
                    } else if (null !== $return) {
                        $subNode = $return;
                    }
                }

                if ($traverseChildren) {
                    $subNode = $this->traverseNode($subNode);
                }

                foreach ($this->visitors as $visitor) {
                    if (null !== $return = $visitor->leaveNode($subNode)) {
                        $subNode = $return;
                    }
                }
            }
        }

        return $node;
    }

    protected function traverseArray(array $nodes) {
        $doNodes = array();

        foreach ($nodes as $i => &$node) {
            if (is_array($node)) {
                $node = $this->traverseArray($node);
            } elseif ($node instanceof Node) {
                $traverseChildren = true;
                foreach ($this->visitors as $visitor) {

                    $return = $visitor->enterNode($node);
                    if (self::DONT_TRAVERSE_CHILDREN === $return) {
                        $traverseChildren = false;
                    } else if (null !== $return) {
                        $node = $return;
                    }
                }

                if ($traverseChildren) {
                    $node = $this->traverseNode($node);
                }

                foreach ($this->visitors as $visitor) {
                    $return = $visitor->leaveNode($node);

                    if (self::REMOVE_NODE === $return) {
                        $doNodes[] = array($i, array());
                        break;
                    } elseif (is_array($return)) {
                        $doNodes[] = array($i, $return);
                        break;
                    } elseif (null !== $return) {
                        $node = $return;
                    }
                }
            }
        }

        if (!empty($doNodes)) {
            while (list($i, $replace) = array_pop($doNodes)) {
                array_splice($nodes, $i, 1, $replace);
            }
        }

        return $nodes;
    }
}


1		<?php
2
3		namespace PhpParser;
4
5		class NodeTraverser implements NodeTraverserInterface
6		{
7		/**
8		* @var NodeVisitor[] Visitors
9		*/
10		protected $visitors;
11
12		/**
13		* @var bool
14		*/
15		private $cloneNodes;
16
17		/**
18		* Constructs a node traverser.
19		*
20		* @param bool $cloneNodes Should the traverser clone the nodes when traversing the AST
21		*/
22		public function __construct($cloneNodes = false) {
23		$this->visitors = array();
24		$this->cloneNodes = $cloneNodes;
25		}
26
27		/**
28		* Adds a visitor.
29		*
30		* @param NodeVisitor $visitor Visitor to add
31		*/
32		public function addVisitor(NodeVisitor $visitor) {
33		$this->visitors[] = $visitor;
34		}
35
36		/**
37		* Removes an added visitor.
38		*
39		* @param NodeVisitor $visitor
40		*/
41		public function removeVisitor(NodeVisitor $visitor) {
42		foreach ($this->visitors as $index => $storedVisitor) {
43		if ($storedVisitor === $visitor) {
44		unset($this->visitors[$index]);
45		break;
46		}
47		}
48		}
49
50		/**
51		* Traverses an array of nodes using the registered visitors.
52		*
53		* @param Node[] $nodes Array of nodes
54		*
55		* @return Node[] Traversed array of nodes
56		*/
57		public function traverse(array $nodes) {
58	View Code Duplication	foreach ($this->visitors as $visitor) {
		0 ignored issues – show Duplication introduced 2015-11-21 21:34 UTC by Report Bug Copy Issue Report Show Similar Issues like this 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...
59		if (null !== $return = $visitor->beforeTraverse($nodes)) {
60		$nodes = $return;
61		}
62		}
63
64		$nodes = $this->traverseArray($nodes);
65
66	View Code Duplication	foreach ($this->visitors as $visitor) {
		0 ignored issues – show Duplication introduced 2015-11-21 21:34 UTC by Report Bug Copy Issue Report Show Similar Issues like this 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...
67		if (null !== $return = $visitor->afterTraverse($nodes)) {
68		$nodes = $return;
69		}
70		}
71
72		return $nodes;
73		}
74
75		protected function traverseNode(Node $node) {
76		if ($this->cloneNodes) {
77		$node = clone $node;
78		}
79
80		foreach ($node->getSubNodeNames() as $name) {
81		$subNode =& $node->$name;
82
83		if (is_array($subNode)) {
84		$subNode = $this->traverseArray($subNode);
85		} elseif ($subNode instanceof Node) {
86		$traverseChildren = true;
87	View Code Duplication	foreach ($this->visitors as $visitor) {
		0 ignored issues – show Duplication introduced 2015-11-21 21:34 UTC by Report Bug Copy Issue Report Show Similar Issues like this 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...
88		$return = $visitor->enterNode($subNode);
89		if (self::DONT_TRAVERSE_CHILDREN === $return) {
90		$traverseChildren = false;
91		} else if (null !== $return) {
92		$subNode = $return;
93		}
94		}
95
96		if ($traverseChildren) {
97		$subNode = $this->traverseNode($subNode);
98		}
99
100		foreach ($this->visitors as $visitor) {
101		if (null !== $return = $visitor->leaveNode($subNode)) {
102		$subNode = $return;
103		}
104		}
105		}
106		}
107
108		return $node;
109		}
110
111		protected function traverseArray(array $nodes) {
112		$doNodes = array();
113
114		foreach ($nodes as $i => &$node) {
115		if (is_array($node)) {
116		$node = $this->traverseArray($node);
117		} elseif ($node instanceof Node) {
118		$traverseChildren = true;
119	View Code Duplication	foreach ($this->visitors as $visitor) {
		0 ignored issues – show Duplication introduced 2015-11-21 21:34 UTC by Report Bug Copy Issue Report Show Similar Issues like this 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...
120		$return = $visitor->enterNode($node);
121		if (self::DONT_TRAVERSE_CHILDREN === $return) {
122		$traverseChildren = false;
123		} else if (null !== $return) {
124		$node = $return;
125		}
126		}
127
128		if ($traverseChildren) {
129		$node = $this->traverseNode($node);
130		}
131
132		foreach ($this->visitors as $visitor) {
133		$return = $visitor->leaveNode($node);
134
135		if (self::REMOVE_NODE === $return) {
136		$doNodes[] = array($i, array());
137		break;
138		} elseif (is_array($return)) {
139		$doNodes[] = array($i, $return);
140		break;
141		} elseif (null !== $return) {
142		$node = $return;
143		}
144		}
145		}
146		}
147
148		if (!empty($doNodes)) {
149		while (list($i, $replace) = array_pop($doNodes)) {
150		array_splice($nodes, $i, 1, $replace);
151		}
152		}
153
154		return $nodes;
155		}
156		}
157

nikic / PHP-Parser

Issues (110)

Security Analysis no request data

lib/PhpParser/NodeTraverser.php (4 issues)

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