Issues in ApcuCache.php (master) - Issues in master - paillechat/apcu-simple-cache - Measure and Improve Code Quality continuously with Scrutinizer

Issues (3)

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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.

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src/ApcuCache.php (1 issue)

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<?php

namespace Paillechat\ApcuSimpleCache;

use Paillechat\ApcuSimpleCache\Exception\ApcuInvalidCacheKeyException;
use Psr\SimpleCache\CacheInterface;

class ApcuCache implements CacheInterface
{
    /**
     * @var string
     */
    private $namespace;
    /**
     * @var int
     */
    private $defaultLifetime;

    public function __construct($namespace = '', $defaultLifetime = 0)
    {
        $this->namespace = $namespace;
        $this->defaultLifetime = $defaultLifetime;
    }

    /**
     * {@inheritdoc}
     */
    public function get($key, $default = null)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        $value = apcu_fetch($key, $success);
        if ($success === false) {
            return $default;
        }

        return $value;
    }

    /**
     * {@inheritdoc}
     */
    public function set($key, $value, $ttl = null)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        $ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;

        return apcu_store($key, $value, (int) $ttl);
    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        return apcu_delete($key);
    }

    /**
     * {@inheritdoc}
     */
    public function clear()
    {
        return apcu_clear_cache();
    }

    /**
     * {@inheritdoc}
     */
    public function getMultiple($keys, $default = null)
    {
        $this->assertKeyNames($keys);
        $keys = $this->buildKeyNames($keys);

        $result = apcu_fetch($keys);

        if (!is_null($default) && is_array($result) && count($keys) > count($result)) {
            $notFoundKeys = array_diff($keys, array_keys($result));
            $result = array_merge($result, array_fill_keys($notFoundKeys, $default));
        }

        $mappedResult = [];

        foreach ($result as $key => $value) {
            $key = preg_replace("/^$this->namespace/", '', $key);

            $mappedResult[$key] = $value;
        }

        return $mappedResult;
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());
}
    }

    /**
     * {@inheritdoc}
     */
    public function setMultiple($values, $ttl = null)
    {
        $this->assertKeyNames(array_keys($values));

        $mappedByNamespaceValues = [];

        foreach ($values as $key => $value) {
            $mappedByNamespaceValues[$this->buildKeyName($key)] = $value;
        }

        $ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;

        $result = apcu_store($mappedByNamespaceValues, (int) $ttl);

        return $result === true ? true : (is_array($result) && count($result) == 0 ? true: false);
    }

    /**
     * {@inheritdoc}
     */
    public function deleteMultiple($keys)
    {
        $this->assertKeyNames($keys);
        $keys = $this->buildKeyNames($keys);

        $result = apcu_delete($keys);

        return count($result) === count($keys) ? false : true;
    }

    /**
     * {@inheritdoc}
     */
    public function has($key)
    {
        $this->assertKeyName($key);
        $key = $this->buildKeyName($key);

        return (bool) apcu_exists($key);
    }

    /**
     * @param string $key
     *
     * @return string
     */
    private function buildKeyName($key)
    {
        return $this->namespace . $key;
    }

    /**
     * @param string[] $keys
     *
     * @return string[]
     */
    private function buildKeyNames(array $keys)
    {
        return array_map(function($key) {
            return $this->buildKeyName($key);
        }, $keys);

    }

    /**
     * @param mixed $key
     *
     * @throws ApcuInvalidCacheKeyException
     */
    private function assertKeyName($key)
    {
        if (!is_scalar($key) || is_bool($key)) {
            throw new ApcuInvalidCacheKeyException();
        }
    }

    /**
     * @param string[] $keys
     *
     * @throws ApcuInvalidCacheKeyException
     */
    private function assertKeyNames(array $keys)
    {
        array_map(function ($value) {
            $this->assertKeyName($value);
        }, $keys);
    }
}


1		<?php
2
3		namespace Paillechat\ApcuSimpleCache;
4
5		use Paillechat\ApcuSimpleCache\Exception\ApcuInvalidCacheKeyException;
6		use Psr\SimpleCache\CacheInterface;
7
8		class ApcuCache implements CacheInterface
9		{
10		/**
11		* @var string
12		*/
13		private $namespace;
14		/**
15		* @var int
16		*/
17		private $defaultLifetime;
18
19	22	public function __construct($namespace = '', $defaultLifetime = 0)
20		{
21	22	$this->namespace = $namespace;
22	22	$this->defaultLifetime = $defaultLifetime;
23	22	}
24
25		/**
26		* {@inheritdoc}
27		*/
28	18	public function get($key, $default = null)
29		{
30	18	$this->assertKeyName($key);
31	8	$key = $this->buildKeyName($key);
32
33	8	$value = apcu_fetch($key, $success);
34	8	if ($success === false) {
35	2	return $default;
36		}
37
38	8	return $value;
39		}
40
41		/**
42		* {@inheritdoc}
43		*/
44	8	public function set($key, $value, $ttl = null)
45		{
46	8	$this->assertKeyName($key);
47	8	$key = $this->buildKeyName($key);
48
49	8	$ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;
50
51	8	return apcu_store($key, $value, (int) $ttl);
52		}
53
54		/**
55		* {@inheritdoc}
56		*/
57	2	public function delete($key)
58		{
59	2	$this->assertKeyName($key);
60	2	$key = $this->buildKeyName($key);
61
62	2	return apcu_delete($key);
63		}
64
65		/**
66		* {@inheritdoc}
67		*/
68	4	public function clear()
69		{
70	4	return apcu_clear_cache();
71		}
72
73		/**
74		* {@inheritdoc}
75		*/
76	2	public function getMultiple($keys, $default = null)
77		{
78	2	$this->assertKeyNames($keys);
79	2	$keys = $this->buildKeyNames($keys);
80
81	2	$result = apcu_fetch($keys);
82
83	2	if (!is_null($default) && is_array($result) && count($keys) > count($result)) {
84	2	$notFoundKeys = array_diff($keys, array_keys($result));
85	2	$result = array_merge($result, array_fill_keys($notFoundKeys, $default));
86	1	}
87
88	2	$mappedResult = [];
89
90	2	foreach ($result as $key => $value) {
91	2	$key = preg_replace("/^$this->namespace/", '', $key);
92
93	2	$mappedResult[$key] = $value;
94	1	}
95
96	2	return $mappedResult;
		0 ignored issues – show Bug Best Practice introduced 2017-05-31 09:46 UTC by Report Bug Copy Issue Report Show Similar Issues like this The return type of `return $mappedResult;` (`array`) is incompatible with the return type declared by the interface `Psr\SimpleCache\CacheInterface::getMultiple` of type `Psr\SimpleCache\iterable`. 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...
97		}
98
99		/**
100		* {@inheritdoc}
101		*/
102	2	public function setMultiple($values, $ttl = null)
103		{
104	2	$this->assertKeyNames(array_keys($values));
105
106	2	$mappedByNamespaceValues = [];
107
108	2	foreach ($values as $key => $value) {
109	2	$mappedByNamespaceValues[$this->buildKeyName($key)] = $value;
110	1	}
111
112	2	$ttl = is_null($ttl) ? $this->defaultLifetime : $ttl;
113
114	2	$result = apcu_store($mappedByNamespaceValues, (int) $ttl);
115
116	2	return $result === true ? true : (is_array($result) && count($result) == 0 ? true: false);
117		}
118
119		/**
120		* {@inheritdoc}
121		*/
122	2	public function deleteMultiple($keys)
123		{
124	2	$this->assertKeyNames($keys);
125	2	$keys = $this->buildKeyNames($keys);
126
127	2	$result = apcu_delete($keys);
128
129	2	return count($result) === count($keys) ? false : true;
130		}
131
132		/**
133		* {@inheritdoc}
134		*/
135	4	public function has($key)
136		{
137	4	$this->assertKeyName($key);
138	4	$key = $this->buildKeyName($key);
139
140	4	return (bool) apcu_exists($key);
141		}
142
143		/**
144		* @param string $key
145		*
146		* @return string
147		*/
148	10	private function buildKeyName($key)
149		{
150	10	return $this->namespace . $key;
151		}
152
153		/**
154		* @param string[] $keys
155		*
156		* @return string[]
157		*/
158	2	private function buildKeyNames(array $keys)
159		{
160		return array_map(function($key) {
161	2	return $this->buildKeyName($key);
162	2	}, $keys);
163
164		}
165
166		/**
167		* @param mixed $key
168		*
169		* @throws ApcuInvalidCacheKeyException
170		*/
171	20	private function assertKeyName($key)
172		{
173	20	if (!is_scalar($key) \|\| is_bool($key)) {
174	10	throw new ApcuInvalidCacheKeyException();
175		}
176	10	}
177
178		/**
179		* @param string[] $keys
180		*
181		* @throws ApcuInvalidCacheKeyException
182		*/
183		private function assertKeyNames(array $keys)
184		{
185	2	array_map(function ($value) {
186	2	$this->assertKeyName($value);
187	2	}, $keys);
188	2	}
189		}
190

paillechat / apcu-simple-cache

Issues (3)

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src/ApcuCache.php (1 issue)

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