Requests_IPv6::uncompress() - Code Metrics - mmainstreet/jodel-web - Measure and Improve Code Quality continuously with Scrutinizer

Requests_IPv6::uncompress() D
last analyzed 2017-07-21 16:19 UTC

↳ Parent: Requests_IPv6

Complexity

Conditions	9
Paths	33

Size

Total Lines	33
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	9
eloc	20
nc	33
nop	1
dl	0
loc	33
rs	4.909
c	0
b	0
f	0

<?php
/**
 * Class to validate and to work with IPv6 addresses
 *
 * @package Requests
 * @subpackage Utilities
 */

/**
 * Class to validate and to work with IPv6 addresses
 *
 * This was originally based on the PEAR class of the same name, but has been
 * entirely rewritten.
 *
 * @package Requests
 * @subpackage Utilities
 */
class Requests_IPv6 {
namespace YourVendor;

class YourClass { }
	/**
	 * Uncompresses an IPv6 address
	 *
	 * RFC 4291 allows you to compress consecutive zero pieces in an address to
	 * '::'. This method expects a valid IPv6 address and expands the '::' to
	 * the required number of zero pieces.
	 *
	 * Example:  FF01::101   ->  FF01:0:0:0:0:0:0:101
	 *           ::1         ->  0:0:0:0:0:0:0:1
	 *
	 * @author Alexander Merz <[email protected]>
	 * @author elfrink at introweb dot nl
	 * @author Josh Peck <jmp at joshpeck dot org>
	 * @copyright 2003-2005 The PHP Group
	 * @license http://www.opensource.org/licenses/bsd-license.php
	 * @param string $ip An IPv6 address
	 * @return string The uncompressed IPv6 address
	 */
	public static function uncompress($ip) {

		if (substr_count($ip, '::') !== 1) {
			return $ip;
		}

		list($ip1, $ip2) = explode('::', $ip);
		$c1 = ($ip1 === '') ? -1 : substr_count($ip1, ':');
$a = "a";
$ab = "ab";
$abc = "abc";
		$c2 = ($ip2 === '') ? -1 : substr_count($ip2, ':');
$a = "a";
$ab = "ab";
$abc = "abc";

		if (strpos($ip2, '.') !== false) {
			$c2++;
		}
		// ::
		if ($c1 === -1 && $c2 === -1) {
			$ip = '0:0:0:0:0:0:0:0';

		}
		// ::xxx
		else if ($c1 === -1) {
			$fill = str_repeat('0:', 7 - $c2);
			$ip = str_replace('::', $fill, $ip);
$a = "a";
$ab = "ab";
$abc = "abc";
		}
		// xxx::
		else if ($c2 === -1) {
			$fill = str_repeat(':0', 7 - $c1);
			$ip = str_replace('::', $fill, $ip);
$a = "a";
$ab = "ab";
$abc = "abc";
		}
		// xxx::xxx
		else {
			$fill = ':' . str_repeat('0:', 6 - $c2 - $c1);
			$ip = str_replace('::', $fill, $ip);
$a = "a";
$ab = "ab";
$abc = "abc";
		}
		return $ip;
	}

	/**
	 * Compresses an IPv6 address
	 *
	 * RFC 4291 allows you to compress consecutive zero pieces in an address to
	 * '::'. This method expects a valid IPv6 address and compresses consecutive
	 * zero pieces to '::'.
	 *
	 * Example:  FF01:0:0:0:0:0:0:101   ->  FF01::101
	 *           0:0:0:0:0:0:0:1        ->  ::1
	 *
	 * @see uncompress()
	 * @param string $ip An IPv6 address
	 * @return string The compressed IPv6 address
	 */
	public static function compress($ip) {

		// Prepare the IP to be compressed
		$ip = self::uncompress($ip);
$a = "a";
$ab = "ab";
$abc = "abc";
		$ip_parts = self::split_v6_v4($ip);

		// Replace all leading zeros
		$ip_parts[0] = preg_replace('/(^|:)0+([0-9])/', '\1\2', $ip_parts[0]);

		// Find bunches of zeros
		if (preg_match_all('/(?:^|:)(?:0(?::|$))+/', $ip_parts[0], $matches, PREG_OFFSET_CAPTURE)) {
			$max = 0;
			$pos = null;
			foreach ($matches[0] as $match) {
				if (strlen($match[0]) > $max) {
					$max = strlen($match[0]);
					$pos = $match[1];
				}
			}

			$ip_parts[0] = substr_replace($ip_parts[0], '::', $pos, $max);
		}

		if ($ip_parts[1] !== '') {
			return implode(':', $ip_parts);
		}
		else {
			return $ip_parts[0];
		}
	}

	/**
	 * Splits an IPv6 address into the IPv6 and IPv4 representation parts
	 *
	 * RFC 4291 allows you to represent the last two parts of an IPv6 address
	 * using the standard IPv4 representation
	 *
	 * Example:  0:0:0:0:0:0:13.1.68.3
	 *           0:0:0:0:0:FFFF:129.144.52.38
	 *
	 * @param string $ip An IPv6 address
	 * @return string[] [0] contains the IPv6 represented part, and [1] the IPv4 represented part
	 */
	protected static function split_v6_v4($ip) {

		if (strpos($ip, '.') !== false) {
			$pos = strrpos($ip, ':');
$a = "a";
$ab = "ab";
$abc = "abc";
			$ipv6_part = substr($ip, 0, $pos);
			$ipv4_part = substr($ip, $pos + 1);
			return array($ipv6_part, $ipv4_part);
		}
		else {
			return array($ip, '');
		}
	}

	/**
	 * Checks an IPv6 address
	 *
	 * Checks if the given IP is a valid IPv6 address
	 *
	 * @param string $ip An IPv6 address
	 * @return bool true if $ip is a valid IPv6 address
	 */
	public static function check_ipv6($ip) {

		$ip = self::uncompress($ip);
$a = "a";
$ab = "ab";
$abc = "abc";
		list($ipv6, $ipv4) = self::split_v6_v4($ip);
		$ipv6 = explode(':', $ipv6);
$a = "a";
$ab = "ab";
$abc = "abc";
		$ipv4 = explode('.', $ipv4);
$a = "a";
$ab = "ab";
$abc = "abc";
		if (count($ipv6) === 8 && count($ipv4) === 1 || count($ipv6) === 6 && count($ipv4) === 4) {
			foreach ($ipv6 as $ipv6_part) {
				// The section can't be empty
				if ($ipv6_part === '') {
					return false;
				}

				// Nor can it be over four characters
				if (strlen($ipv6_part) > 4) {
					return false;
				}

				// Remove leading zeros (this is safe because of the above)
				$ipv6_part = ltrim($ipv6_part, '0');
				if ($ipv6_part === '') {
					$ipv6_part = '0';
				}

				// Check the value is valid
				$value = hexdec($ipv6_part);
				if (dechex($value) !== strtolower($ipv6_part) || $value < 0 || $value > 0xFFFF) {
					return false;
				}
			}
			if (count($ipv4) === 4) {
				foreach ($ipv4 as $ipv4_part) {
					$value = (int) $ipv4_part;
					if ((string) $value !== $ipv4_part || $value < 0 || $value > 0xFF) {
						return false;
					}
				}
			}
			return true;
		}
		else {
			return false;
		}
	}
}



1			<?php
2			/**
3			* Class to validate and to work with IPv6 addresses
4			*
5			* @package Requests
6			* @subpackage Utilities
7			*/
8
9			/**
10			* Class to validate and to work with IPv6 addresses
11			*
12			* This was originally based on the PEAR class of the same name, but has been
13			* entirely rewritten.
14			*
15			* @package Requests
16			* @subpackage Utilities
17			*/
18			class Requests_IPv6 {
			0 ignored issues – show Coding Style Compatibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions. You can fix this by adding a namespace to your class: namespace YourVendor; class YourClass { } When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report This class is not in CamelCase format. Classes in PHP are usually named in CamelCase. In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. The whole name starts with a capital letter as well. Thus the name database provider becomes `DatabaseProvider`. Loading history...
19			/**
20			* Uncompresses an IPv6 address
21			*
22			* RFC 4291 allows you to compress consecutive zero pieces in an address to
23			* '::'. This method expects a valid IPv6 address and expands the '::' to
24			* the required number of zero pieces.
25			*
26			* Example: FF01::101 -> FF01:0:0:0:0:0:0:101
27			* ::1 -> 0:0:0:0:0:0:0:1
28			*
29			* @author Alexander Merz <[email protected]>
30			* @author elfrink at introweb dot nl
31			* @author Josh Peck <jmp at joshpeck dot org>
32			* @copyright 2003-2005 The PHP Group
33			* @license http://www.opensource.org/licenses/bsd-license.php
34			* @param string $ip An IPv6 address
35			* @return string The uncompressed IPv6 address
36			*/
37			public static function uncompress($ip) {
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ip. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
38			if (substr_count($ip, '::') !== 1) {
39			return $ip;
40			}
41
42			list($ip1, $ip2) = explode('::', $ip);
43			$c1 = ($ip1 === '') ? -1 : substr_count($ip1, ':');
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $c1. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 14 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
44			$c2 = ($ip2 === '') ? -1 : substr_count($ip2, ':');
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $c2. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 14 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
45
46			if (strpos($ip2, '.') !== false) {
47			$c2++;
48			}
49			// ::
50			if ($c1 === -1 && $c2 === -1) {
51			$ip = '0:0:0:0:0:0:0:0';
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history...
52			}
53			// ::xxx
54			else if ($c1 === -1) {
55			$fill = str_repeat('0:', 7 - $c2);
56			$ip = str_replace('::', $fill, $ip);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 3 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
57			}
58			// xxx::
59			else if ($c2 === -1) {
60			$fill = str_repeat(':0', 7 - $c1);
61			$ip = str_replace('::', $fill, $ip);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 3 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
62			}
63			// xxx::xxx
64			else {
65			$fill = ':' . str_repeat('0:', 6 - $c2 - $c1);
66			$ip = str_replace('::', $fill, $ip);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 3 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
67			}
68			return $ip;
69			}
70
71			/**
72			* Compresses an IPv6 address
73			*
74			* RFC 4291 allows you to compress consecutive zero pieces in an address to
75			* '::'. This method expects a valid IPv6 address and compresses consecutive
76			* zero pieces to '::'.
77			*
78			* Example: FF01:0:0:0:0:0:0:101 -> FF01::101
79			* 0:0:0:0:0:0:0:1 -> ::1
80			*
81			* @see uncompress()
82			* @param string $ip An IPv6 address
83			* @return string The compressed IPv6 address
84			*/
85			public static function compress($ip) {
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ip. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
86			// Prepare the IP to be compressed
87			$ip = self::uncompress($ip);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 7 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
88			$ip_parts = self::split_v6_v4($ip);
89
90			// Replace all leading zeros
91			$ip_parts[0] = preg_replace('/(^\|:)0+([0-9])/', '\1\2', $ip_parts[0]);
92
93			// Find bunches of zeros
94			if (preg_match_all('/(?:^\|:)(?:0(?::\|$))+/', $ip_parts[0], $matches, PREG_OFFSET_CAPTURE)) {
95			$max = 0;
96			$pos = null;
97			foreach ($matches[0] as $match) {
98			if (strlen($match[0]) > $max) {
99			$max = strlen($match[0]);
100			$pos = $match[1];
101			}
102			}
103
104			$ip_parts[0] = substr_replace($ip_parts[0], '::', $pos, $max);
105			}
106
107			if ($ip_parts[1] !== '') {
108			return implode(':', $ip_parts);
109			}
110			else {
111			return $ip_parts[0];
112			}
113			}
114
115			/**
116			* Splits an IPv6 address into the IPv6 and IPv4 representation parts
117			*
118			* RFC 4291 allows you to represent the last two parts of an IPv6 address
119			* using the standard IPv4 representation
120			*
121			* Example: 0:0:0:0:0:0:13.1.68.3
122			* 0:0:0:0:0:FFFF:129.144.52.38
123			*
124			* @param string $ip An IPv6 address
125			* @return string[] [0] contains the IPv6 represented part, and [1] the IPv4 represented part
126			*/
127			protected static function split_v6_v4($ip) {
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ip. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report This method is not in camel caps format. This check looks for method names that are not written in camelCase. In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection seeker becomes `databaseConnectionSeeker`. Loading history...
128			if (strpos($ip, '.') !== false) {
129			$pos = strrpos($ip, ':');
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 7 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
130			$ipv6_part = substr($ip, 0, $pos);
131			$ipv4_part = substr($ip, $pos + 1);
132			return array($ipv6_part, $ipv4_part);
133			}
134			else {
135			return array($ip, '');
136			}
137			}
138
139			/**
140			* Checks an IPv6 address
141			*
142			* Checks if the given IP is a valid IPv6 address
143			*
144			* @param string $ip An IPv6 address
145			* @return bool true if $ip is a valid IPv6 address
146			*/
147			public static function check_ipv6($ip) {
			0 ignored issues – show Comprehensibility introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ip. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report This method is not in camel caps format. This check looks for method names that are not written in camelCase. In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection seeker becomes `databaseConnectionSeeker`. Loading history...
148			$ip = self::uncompress($ip);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Consider using a different name than the parameter `$ip`. This often makes code more readable. Loading history... Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 16 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
149			list($ipv6, $ipv4) = self::split_v6_v4($ip);
150			$ipv6 = explode(':', $ipv6);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 14 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
151			$ipv4 = explode('.', $ipv4);
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report Equals sign not aligned with surrounding assignments; expected 14 spaces but found 1 space This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a"; $ab = "ab"; $abc = "abc"; will produce issues in the first and second line, while this second example $a = "a"; $ab = "ab"; $abc = "abc"; will produce no issues. Loading history...
152			if (count($ipv6) === 8 && count($ipv4) === 1 \|\| count($ipv6) === 6 && count($ipv4) === 4) {
153			foreach ($ipv6 as $ipv6_part) {
154			// The section can't be empty
155			if ($ipv6_part === '') {
156			return false;
157			}
158
159			// Nor can it be over four characters
160			if (strlen($ipv6_part) > 4) {
161			return false;
162			}
163
164			// Remove leading zeros (this is safe because of the above)
165			$ipv6_part = ltrim($ipv6_part, '0');
166			if ($ipv6_part === '') {
167			$ipv6_part = '0';
168			}
169
170			// Check the value is valid
171			$value = hexdec($ipv6_part);
172			if (dechex($value) !== strtolower($ipv6_part) \|\| $value < 0 \|\| $value > 0xFFFF) {
173			return false;
174			}
175			}
176			if (count($ipv4) === 4) {
177			foreach ($ipv4 as $ipv4_part) {
178			$value = (int) $ipv4_part;
179			if ((string) $value !== $ipv4_part \|\| $value < 0 \|\| $value > 0xFF) {
180			return false;
181			}
182			}
183			}
184			return true;
185			}
186			else {
187			return false;
188			}
189			}
190			}
			0 ignored issues – show Coding Style introduced 2016-11-20 17:06 UTC by Report Bug Copy Issue Report As per coding style, files should not end with a newline character. This check marks files that end in a newline character, i.e. an empy line. Loading history...
191

mmainstreet / jodel-web

Requests_IPv6::uncompress() D last analyzed 2017-07-21 16:19 UTC

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Requests_IPv6::uncompress() D
last analyzed 2017-07-21 16:19 UTC