AbstractKeyedHashFunction::isFileSaltingForcingNativeHashing() - Code Metrics - Inspection of "Fixed a few coding style issues found by Scrutiniz..." - TonyKaravasilev/CryptoManana - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( da3f44...ad9152 )

by Tony Karavasilev (Тони

created 2019-12-13 13:26 UTC

isFileSaltingForcingNativeHashing() A

↳ Parent: AbstractKeyedHashFunction

Complexity

Conditions	4
Paths	5

Size

Total Lines	11
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	4

Importance

Changes

Metric	Value
eloc	6
c	0
b	0
f	0
dl	0
loc	11
ccs	5
cts	5
cp	1
rs	10
cc	4
nc	5
nop	0
crap	4

<?php

/**
 * Abstraction for keyed hash objects like HMAC functions (keyed-hash message authentication code hash).
 */

namespace CryptoManana\Core\Abstractions\MessageDigestion;

use \CryptoManana\Core\Abstractions\MessageDigestion\AbstractHashAlgorithm as HashAlgorithm;
use \CryptoManana\Core\Interfaces\MessageDigestion\DigestionKeyInterface as KeyedHashing;
use \CryptoManana\Core\Interfaces\MessageDigestion\ObjectHashingInterface as ObjectHashing;
use \CryptoManana\Core\Interfaces\MessageDigestion\FileHashingInterface as FileHashing;
use \CryptoManana\Core\Traits\MessageDigestion\DigestionKeyTrait as DigestionKey;
use \CryptoManana\Core\Traits\MessageDigestion\ObjectHashingTrait as HashObjects;
use \CryptoManana\Core\StringBuilder as StringBuilder;

/**
 * Class AbstractKeyedHashFunction - Abstraction for keyed hash classes.
 *
 * @package CryptoManana\Core\Abstractions\MessageDigestion
 *
 * @mixin DigestionKey
 * @mixin HashObjects
 */
abstract class AbstractKeyedHashFunction extends HashAlgorithm implements KeyedHashing, ObjectHashing, FileHashing
{
    /**
     * Data salting capabilities.
     *
     * {@internal Reusable implementation of `DigestionKeyInterface`. }}
     */
    use DigestionKey;

    /**
     * Object hashing capabilities.
     *
     * {@internal Reusable implementation of `ObjectHashingInterface`. }}
     */
    use HashObjects;

    /**
     * The internal name of the algorithm.
     */
    const ALGORITHM_NAME = 'none';

    /**
     * Flag to force native code polyfill realizations, if available.
     *
     * @var bool Flag to force native realizations.
     */
    protected $useNative = false;

    /**
     * The key string property storage.
     *
     * @var string The digestion key string value.
     */
    protected $key = '';

    /**
     * Internal method for location and filename validation.
     *
     * @param string $filename The filename and location.
     *
     * @throws \Exception Validation errors.
     */
    protected function validateFileNamePath($filename)
    {
        $filename = StringBuilder::stringReplace("\0", '', $filename); // (ASCII 0 (0x00))
        $filename = realpath($filename); // Path traversal escape and absolute path fetching

        // Clear path cache
        if (!empty($filename)) {
            clearstatcache(true, $filename);
        }

        // Check if path is valid and the file is readable
        if ($filename === false || !file_exists($filename) || !is_readable($filename) || !is_file($filename)) {
            throw new \RuntimeException('File is not found or can not be accessed.');
        }
    }

    /**
     * Internal method for checking if native file hashing should be used by force.
     *
     * @return bool Is native hashing needed for the current salting mode.
     */
    protected function isFileSaltingForcingNativeHashing()
    {
        return (
            (
                // If there is an non-empty salt string set and salting is enabled
                $this->salt !== '' &&
                $this->saltingMode !== self::SALTING_MODE_NONE
            ) || (
                // If there is an empty salt string set and the salting mode duplicates/manipulates the input
                $this->salt === '' &&
                in_array($this->saltingMode, [self::SALTING_MODE_INFIX_SALT, self::SALTING_MODE_PALINDROME_MIRRORING])
            )
        );
    }

    /**
     * Unkeyed hash algorithm constructor.
     */
    public function __construct()
    {
    }

    /**
     * Calculates a hash value for the given data.
     *
     * @param string $data The input string.
     *
     * @return string The digest.
     * @throws \Exception Validation errors.
     */
    public function hashData($data)
    {
        if (!is_string($data)) {
            throw new \InvalidArgumentException('The data for hashing must be a string or a binary string.');
        }

        $data = $this->addSaltString($data);

        $digest = hash_hmac(
            static::ALGORITHM_NAME,
            $data,
            $this->key,
            ($this->digestFormat === self::DIGEST_OUTPUT_RAW)
        );

        $digest = $this->changeOutputFormat($digest);

        return $digest;
    }

    /**
     * Calculates a hash value for the content of the given filename and location.
     *
     * @param string $filename The full path and name of the file for hashing.
     *
     * @return string The digest.
     * @throws \Exception Validation errors.
     */
    public function hashFile($filename)
    {
        // Validate input type
        if (!is_string($filename)) {
            throw new \InvalidArgumentException('The file path must be of type string.');
        }

        $this->validateFileNamePath($filename);

        $useFileSalting = $this->isFileSaltingForcingNativeHashing();

        if ($this->useNative || $useFileSalting) {
            /**
             * {@internal An optimization for native performance that spears string manipulations and function calls. }}
             */
            if (!$useFileSalting) {
                $oldSalt = $this->salt;
                $oldMode = $this->saltingMode;

                $this->salt = '';
                $this->saltingMode = self::SALTING_MODE_NONE;
            }

            $digest = $this->hashData(file_get_contents($filename));

            if (!$useFileSalting && isset($oldSalt, $oldMode)) {
                $this->salt = $oldSalt;
                $this->saltingMode = $oldMode;
            }
        } else {
            $digest = hash_hmac_file(
                static::ALGORITHM_NAME,
                $filename,
                $this->key,
                ($this->digestFormat === self::DIGEST_OUTPUT_RAW)
            );

            $digest = $this->changeOutputFormat($digest);
        }

        return $digest;
    }

    /**
     * Get debug information for the class instance.
     *
     * @return array Debug information.
     */
    public function __debugInfo()
    {
        return [
            'standard' => static::ALGORITHM_NAME,
            'type' => 'keyed digestion or HMAC',
            'key' => $this->key,
            'salt' => $this->salt,
            'mode' => $this->saltingMode,
        ];
    }
}


1		<?php
2
3		/**
4		* Abstraction for keyed hash objects like HMAC functions (keyed-hash message authentication code hash).
5		*/
6
7		namespace CryptoManana\Core\Abstractions\MessageDigestion;
8
9		use \CryptoManana\Core\Abstractions\MessageDigestion\AbstractHashAlgorithm as HashAlgorithm;
10		use \CryptoManana\Core\Interfaces\MessageDigestion\DigestionKeyInterface as KeyedHashing;
11		use \CryptoManana\Core\Interfaces\MessageDigestion\ObjectHashingInterface as ObjectHashing;
12		use \CryptoManana\Core\Interfaces\MessageDigestion\FileHashingInterface as FileHashing;
13		use \CryptoManana\Core\Traits\MessageDigestion\DigestionKeyTrait as DigestionKey;
14		use \CryptoManana\Core\Traits\MessageDigestion\ObjectHashingTrait as HashObjects;
15		use \CryptoManana\Core\StringBuilder as StringBuilder;
16
17		/**
18		* Class AbstractKeyedHashFunction - Abstraction for keyed hash classes.
19		*
20		* @package CryptoManana\Core\Abstractions\MessageDigestion
21		*
22		* @mixin DigestionKey
23		* @mixin HashObjects
24		*/
25		abstract class AbstractKeyedHashFunction extends HashAlgorithm implements KeyedHashing, ObjectHashing, FileHashing
26		{
27		/**
28		* Data salting capabilities.
29		*
30		* {@internal Reusable implementation of `DigestionKeyInterface`. }}
31		*/
32		use DigestionKey;
33
34		/**
35		* Object hashing capabilities.
36		*
37		* {@internal Reusable implementation of `ObjectHashingInterface`. }}
38		*/
39		use HashObjects;
40
41		/**
42		* The internal name of the algorithm.
43		*/
44		const ALGORITHM_NAME = 'none';
45
46		/**
47		* Flag to force native code polyfill realizations, if available.
48		*
49		* @var bool Flag to force native realizations.
50		*/
51		protected $useNative = false;
52
53		/**
54		* The key string property storage.
55		*
56		* @var string The digestion key string value.
57		*/
58		protected $key = '';
59
60		/**
61		* Internal method for location and filename validation.
62		*
63		* @param string $filename The filename and location.
64		*
65		* @throws \Exception Validation errors.
66		*/
67	44	protected function validateFileNamePath($filename)
68		{
69	44	$filename = StringBuilder::stringReplace("\0", '', $filename); // (ASCII 0 (0x00))
70	44	$filename = realpath($filename); // Path traversal escape and absolute path fetching
71
72		// Clear path cache
73	44	if (!empty($filename)) {
74	22	clearstatcache(true, $filename);
75		}
76
77		// Check if path is valid and the file is readable
78	44	if ($filename === false \|\| !file_exists($filename) \|\| !is_readable($filename) \|\| !is_file($filename)) {
79	22	throw new \RuntimeException('File is not found or can not be accessed.');
80		}
81	22	}
82
83		/**
84		* Internal method for checking if native file hashing should be used by force.
85		*
86		* @return bool Is native hashing needed for the current salting mode.
87		*/
88	22	protected function isFileSaltingForcingNativeHashing()
89		{
90		return (
91		(
92		// If there is an non-empty salt string set and salting is enabled
93	22	$this->salt !== '' &&
94	22	$this->saltingMode !== self::SALTING_MODE_NONE
95		) \|\| (
96		// If there is an empty salt string set and the salting mode duplicates/manipulates the input
97	22	$this->salt === '' &&
98	22	in_array($this->saltingMode, [self::SALTING_MODE_INFIX_SALT, self::SALTING_MODE_PALINDROME_MIRRORING])
99		)
100		);
101		}
102
103		/**
104		* Unkeyed hash algorithm constructor.
105		*/
106	396	public function __construct()
107		{
108	396	}
109
110		/**
111		* Calculates a hash value for the given data.
112		*
113		* @param string $data The input string.
114		*
115		* @return string The digest.
116		* @throws \Exception Validation errors.
117		*/
118	140	public function hashData($data)
119		{
120	140	if (!is_string($data)) {
121	14	throw new \InvalidArgumentException('The data for hashing must be a string or a binary string.');
122		}
123
124	126	$data = $this->addSaltString($data);
125
126	126	$digest = hash_hmac(
127	126	static::ALGORITHM_NAME,
128		$data,
129	126	$this->key,
130	126	($this->digestFormat === self::DIGEST_OUTPUT_RAW)
131		);
132
133	126	$digest = $this->changeOutputFormat($digest);
134
135	126	return $digest;
136		}
137
138		/**
139		* Calculates a hash value for the content of the given filename and location.
140		*
141		* @param string $filename The full path and name of the file for hashing.
142		*
143		* @return string The digest.
144		* @throws \Exception Validation errors.
145		*/
146	66	public function hashFile($filename)
147		{
148		// Validate input type
149	66	if (!is_string($filename)) {
150	22	throw new \InvalidArgumentException('The file path must be of type string.');
151		}
152
153	44	$this->validateFileNamePath($filename);
154
155	22	$useFileSalting = $this->isFileSaltingForcingNativeHashing();
156
157	22	if ($this->useNative \|\| $useFileSalting) {
158		/**
159		* {@internal An optimization for native performance that spears string manipulations and function calls. }}
160		*/
161	22	if (!$useFileSalting) {
162	22	$oldSalt = $this->salt;
163	22	$oldMode = $this->saltingMode;
164
165	22	$this->salt = '';
166	22	$this->saltingMode = self::SALTING_MODE_NONE;
167		}
168
169	22	$digest = $this->hashData(file_get_contents($filename));
170
171	22	if (!$useFileSalting && isset($oldSalt, $oldMode)) {
172	22	$this->salt = $oldSalt;
173	22	$this->saltingMode = $oldMode;
174		}
175		} else {
176	22	$digest = hash_hmac_file(
177	22	static::ALGORITHM_NAME,
178		$filename,
179	22	$this->key,
180	22	($this->digestFormat === self::DIGEST_OUTPUT_RAW)
181		);
182
183	22	$digest = $this->changeOutputFormat($digest);
184		}
185
186	22	return $digest;
187		}
188
189		/**
190		* Get debug information for the class instance.
191		*
192		* @return array Debug information.
193		*/
194	22	public function __debugInfo()
195		{
196		return [
197	22	'standard' => static::ALGORITHM_NAME,
198	22	'type' => 'keyed digestion or HMAC',
199	22	'key' => $this->key,
200	22	'salt' => $this->salt,
201	22	'mode' => $this->saltingMode,
202		];
203		}
204		}
205

TonyKaravasilev / CryptoManana

Push — master ( da3f44...ad9152 )

isFileSaltingForcingNativeHashing() A

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