Ip::allowNegation() - Code Metrics - Inspection of "Fix #26: Add Ip::network()" - yiisoft/validator - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 52f31e...9d8a75 )

by Alexander

created 2020-02-22 15:02 UTC

Ip::allowNegation() A

↳ Parent: Ip

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	2
nc	1
nop	0
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php

namespace Yiisoft\Validator\Rule;

use Yiisoft\NetworkUtilities\IpHelper;
use Yiisoft\Validator\DataSetInterface;
use Yiisoft\Validator\Result;
use Yiisoft\Validator\Rule;

/**
 * The validator checks if the attribute value is a valid IPv4/IPv6 address or subnet.
 *
 * It also may change attribute's value if normalization of IPv6 expansion is enabled.
 *
 * The following are examples of validation rules using this validator:
 *
 * ```php
 * ['ip_address', 'ip'], // IPv4 or IPv6 address
 * ['ip_address', 'ip', 'ipv6' => false], // IPv4 address (IPv6 is disabled)
 * ['ip_address', 'ip', 'subnet' => true], // requires a CIDR prefix (like 10.0.0.1/24) for the IP address
 * ['ip_address', 'ip', 'subnet' => null], // CIDR prefix is optional
 * ['ip_address', 'ip', 'subnet' => null, 'normalize' => true], // CIDR prefix is optional and will be added when missing
 * ['ip_address', 'ip', 'ranges' => ['192.168.0.0/24']], // only IP addresses from the specified subnet are allowed
 * ['ip_address', 'ip', 'ranges' => ['!192.168.0.0/24', 'any']], // any IP is allowed except IP in the specified subnet
 * ['ip_address', 'ip', 'expandIPv6' => true], // expands IPv6 address to a full notation format
 * ```
 *
 * @property array $ranges The IPv4 or IPv6 ranges that are allowed or forbidden. See [[setRanges()]] for
 * detailed description.
 */
class Ip extends Rule
{
    /**
     * Negation char.
     *
     * Used to negate [[ranges]] or [[networks]] or to negate validating value when [[negation]] is set to `true`.
     *
     * @see allowNegation
     * @see networks
     * @see ranges
     */
    private const NEGATION_CHAR = '!';

    /**
     * @var array The network aliases, that can be used in {@see ranges()}.
     *  - key - alias name
     *  - value - array of strings. String can be an IP range, IP address or another alias. String can be
     *    negated with [[NEGATION_CHAR]] (independent of `negation` option).
     *
     * The following aliases are defined by default:
     *  - `*`: `any`
     *  - `any`: `0.0.0.0/0, ::/0`
     *  - `private`: `10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fd00::/8`
     *  - `multicast`: `224.0.0.0/4, ff00::/8`
     *  - `linklocal`: `169.254.0.0/16, fe80::/10`
     *  - `localhost`: `127.0.0.0/8', ::1`
     *  - `documentation`: `192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32`
     *  - `system`: `multicast, linklocal, localhost, documentation`
     */
    private array $networks = [
        '*' => ['any'],
        'any' => ['0.0.0.0/0', '::/0'],
        'private' => ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fd00::/8'],
        'multicast' => ['224.0.0.0/4', 'ff00::/8'],
        'linklocal' => ['169.254.0.0/16', 'fe80::/10'],
        'localhost' => ['127.0.0.0/8', '::1'],
        'documentation' => ['192.0.2.0/24', '198.51.100.0/24', '203.0.113.0/24', '2001:db8::/32'],
        'system' => ['multicast', 'linklocal', 'localhost', 'documentation'],
    ];
    /**
     * @var bool whether the validating value can be an IPv6 address. Defaults to `true`.
     */
    private bool $allowIpv6 = true;
    /**
     * @var bool whether the validating value can be an IPv4 address. Defaults to `true`.
     */
    private bool $allowIpv4 = true;
    /**
     * @var bool whether the address can be an IP with CIDR subnet, like `192.168.10.0/24`.
     * The following values are possible:
     *
     * - `false` - the address must not have a subnet (default).
     * - `true` - specifying a subnet is optional.
     */
    private bool $allowSubnet = false;
    /**
     * @var bool
     */
    private bool $requireSubnet = false;
    /**
     * @var bool whether address may have a [[NEGATION_CHAR]] character at the beginning.
     * Defaults to `false`.
     */
    private bool $allowNegation = false;

    /**
     * @var string user-defined error message is used when validation fails due to the wrong IP address format.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     */
    private string $message = 'Must be a valid IP address.';
    /**
     * @var string user-defined error message is used when validation fails due to the disabled IPv6 validation.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     *
     * @see allowIpv6
     */
    private string $ipv6NotAllowed = 'Must not be an IPv6 address.';
    /**
     * @var string user-defined error message is used when validation fails due to the disabled IPv4 validation.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     *
     * @see allowIpv4
     */
    private string $ipv4NotAllowed = 'Must not be an IPv4 address.';
    /**
     * @var string user-defined error message is used when validation fails due to the wrong CIDR.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     * @see allowSubnet
     */
    private string $wrongCidr = 'Contains wrong subnet mask.';
    /**
     * @var string user-defined error message is used when validation fails due to subnet [[subnet]] set to 'only',
     * but the CIDR prefix is not set.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     *
     * @see allowSubnet
     */
    private string $noSubnet = 'Must be an IP address with specified subnet.';
    /**
     * @var string user-defined error message is used when validation fails
     * due to [[subnet]] is false, but CIDR prefix is present.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     *
     * @see allowSubnet
     */
    private string $hasSubnet = 'Must not be a subnet.';
    /**
     * @var string user-defined error message is used when validation fails due to IP address
     * is not not allowed by [[ranges]] check.
     *
     * You may use the following placeholders in the message:
     *
     * - `{attribute}`: the label of the attribute being validated
     * - `{value}`: the value of the attribute being validated
     *
     * @see ranges
     */
    private string $notInRange = 'Is not in the allowed range.';

    /**
     * @var array
     */
    private array $ranges = [];

    /**
     * Set the IPv4 or IPv6 ranges that are allowed or forbidden.
     *
     * The following preparation tasks are performed:
     *
     * - Recursively substitutes aliases (described in [[networks]]) with their values.
     * - Removes duplicates
     *
     * @param array $ranges the IPv4 or IPv6 ranges that are allowed or forbidden.
     *
     * When the array is empty, or the option not set, all IP addresses are allowed.
     *
     * Otherwise, the rules are checked sequentially until the first match is found.
     * An IP address is forbidden, when it has not matched any of the rules.
     *
     * Example:
     *
     * ```php
     * (new Ip())->ranges([
     *          '192.168.10.128'
     *          '!192.168.10.0/24',
     *          'any' // allows any other IP addresses
     *      ]);
     * ```
     *
     * In this example, access is allowed for all the IPv4 and IPv6 addresses excluding the `192.168.10.0/24` subnet.
     * IPv4 address `192.168.10.128` is also allowed, because it is listed before the restriction.
     */
    public function ranges(array $ranges): self
    {
        $this->ranges = $this->prepareRanges($ranges);
        return $this;
    }

    /**
     * Define network alias to be used in {@see ranges()}
     *
     * @param string $name name of the network
     * @param array $ranges ranges
     * @return self
     */
    public function network(string $name, array $ranges): self
    {
        if (array_key_exists($name, $this->networks)) {
            throw new \RuntimeException("Network alias \"{$name}\" already set");
        }
        $this->networks[$name] = $ranges;
        return $this;
    }

    public function getRanges(): array
    {
        return $this->ranges;
    }

    public function allowIpv4(): self
    {
        $this->allowIpv4 = true;
        return $this;
    }

    public function disallowIpv4(): self
    {
        $this->allowIpv4 = false;
        return $this;
    }

    public function allowIpv6(): self
    {
        $this->allowIpv6 = true;
        return $this;
    }

    public function disallowIpv6(): self
    {
        $this->allowIpv6 = false;
        return $this;
    }

    public function allowNegation(): self
    {
        $this->allowNegation = true;
        return $this;
    }

    public function disallowNegation(): self
    {
        $this->allowNegation = false;
        return $this;
    }

    public function allowSubnet(): self
    {
        $this->allowSubnet = true;
        $this->requireSubnet = false;
        return $this;
    }

    public function requireSubnet(): self
    {
        $this->allowSubnet = true;
        $this->requireSubnet = true;
        return $this;
    }

    public function disallowSubnet(): self
    {
        $this->allowSubnet = false;
        $this->requireSubnet = false;
        return $this;
    }

    protected function validateValue($value, DataSetInterface $dataSet = null): Result
    {
        if (!$this->allowIpv4 && !$this->allowIpv6) {
            throw new \RuntimeException('Both IPv4 and IPv6 checks can not be disabled at the same time');
        }
        $result = new Result();
        if (!is_string($value)) {
            $result->addError($this->formatMessage($this->message));
            return $result;
        }

        if (preg_match($this->getIpParsePattern(), $value, $matches) === 0) {
            $result->addError($this->formatMessage($this->message));
            return $result;
        }
        $negation = !empty($matches['not'] ?? null);
        $ip = $matches['ip'];
        $cidr = $matches['cidr'] ?? null;
        $ipCidr = $matches['ipCidr'];

        try {
            $ipVersion = IpHelper::getIpVersion($ip, false);
        } catch (\InvalidArgumentException $e) {
            $result->addError($this->formatMessage($this->message));
            return $result;
        }

        if ($this->requireSubnet === true && $cidr === null) {
            $result->addError($this->formatMessage($this->noSubnet));
            return $result;
        }
        if ($this->allowSubnet === false && $cidr !== null) {
            $result->addError($this->formatMessage($this->hasSubnet));
            return $result;
        }
        if ($this->allowNegation === false && $negation) {
            $result->addError($this->formatMessage($this->message));
            return $result;
        }
        if ($ipVersion === IpHelper::IPV6 && !$this->allowIpv6) {
            $result->addError($this->formatMessage($this->ipv6NotAllowed));
            return $result;
        }
        if ($ipVersion === IpHelper::IPV4 && !$this->allowIpv4) {
            $result->addError($this->formatMessage($this->ipv4NotAllowed));
            return $result;
        }
        if (!$result->isValid()) {
            return $result;
        }
        if ($cidr !== null) {
            try {
                $cidr = IpHelper::getCidrBits($ipCidr);

            } catch (\InvalidArgumentException $e) {
                $result->addError($this->formatMessage($this->wrongCidr));
                return $result;
            }
        }
        if (!$this->isAllowed($ipCidr)) {
            $result->addError($this->formatMessage($this->notInRange));
            return $result;
        }

        return $result;
    }

    /**
     * The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list.
     *
     * @see ranges
     */
    private function isAllowed(string $ip): bool
    {
        if (empty($this->ranges)) {
            return true;
        }

        foreach ($this->ranges as $string) {
            [$isNegated, $range] = $this->parseNegatedRange($string);
            if (IpHelper::inRange($ip, $range)) {
                return !$isNegated;
            }
        }

        return false;
    }

    /**
     * Parses IP address/range for the negation with [[NEGATION_CHAR]].
     *
     * @param $string
     * @return array `[0 => bool, 1 => string]`
     *  - boolean: whether the string is negated
     *  - string: the string without negation (when the negation were present)
     */
    private function parseNegatedRange($string): array
    {
        $isNegated = strpos($string, static::NEGATION_CHAR) === 0;
        return [$isNegated, $isNegated ? substr($string, strlen(static::NEGATION_CHAR)) : $string];
    }

    /**
     * Prepares array to fill in [[ranges]].
     *
     *  - Recursively substitutes aliases, described in [[networks]] with their values,
     *  - Removes duplicates.
     *
     * @param array $ranges
     * @return array
     * @see networks
     */
    private function prepareRanges(array $ranges): array
    {
        $result = [];
        foreach ($ranges as $string) {
            [$isRangeNegated, $range] = $this->parseNegatedRange($string);
            if (isset($this->networks[$range])) {
                $replacements = $this->prepareRanges($this->networks[$range]);
                foreach ($replacements as &$replacement) {
                    [$isReplacementNegated, $replacement] = $this->parseNegatedRange($replacement);
                    $result[] = ($isRangeNegated && !$isReplacementNegated ? static::NEGATION_CHAR : '') . $replacement;
                }
            } else {
                $result[] = $string;
            }
        }

        return array_unique($result);
    }

    /**
     * Used to get the Regexp pattern for initial IP address parsing.
     * @return string
     */
    public function getIpParsePattern(): string
    {
        return '/^(?<not>' . preg_quote(static::NEGATION_CHAR, '/') . ')?(?<ipCidr>(?<ip>(?:' . IpHelper::IPV4_PATTERN . ')|(?:' . IpHelper::IPV6_PATTERN . '))(?:\/(?<cidr>-?\d+))?)$/';
    }
}


1		<?php
2
3		namespace Yiisoft\Validator\Rule;
4
5		use Yiisoft\NetworkUtilities\IpHelper;
6		use Yiisoft\Validator\DataSetInterface;
7		use Yiisoft\Validator\Result;
8		use Yiisoft\Validator\Rule;
9
10		/**
11		* The validator checks if the attribute value is a valid IPv4/IPv6 address or subnet.
12		*
13		* It also may change attribute's value if normalization of IPv6 expansion is enabled.
14		*
15		* The following are examples of validation rules using this validator:
16		*
17		* ```php
18		* ['ip_address', 'ip'], // IPv4 or IPv6 address
19		* ['ip_address', 'ip', 'ipv6' => false], // IPv4 address (IPv6 is disabled)
20		* ['ip_address', 'ip', 'subnet' => true], // requires a CIDR prefix (like 10.0.0.1/24) for the IP address
21		* ['ip_address', 'ip', 'subnet' => null], // CIDR prefix is optional
22		* ['ip_address', 'ip', 'subnet' => null, 'normalize' => true], // CIDR prefix is optional and will be added when missing
23		* ['ip_address', 'ip', 'ranges' => ['192.168.0.0/24']], // only IP addresses from the specified subnet are allowed
24		* ['ip_address', 'ip', 'ranges' => ['!192.168.0.0/24', 'any']], // any IP is allowed except IP in the specified subnet
25		* ['ip_address', 'ip', 'expandIPv6' => true], // expands IPv6 address to a full notation format
26		* ```
27		*
28		* @property array $ranges The IPv4 or IPv6 ranges that are allowed or forbidden. See [[setRanges()]] for
29		* detailed description.
30		*/
31		class Ip extends Rule
32		{
33		/**
34		* Negation char.
35		*
36		* Used to negate [[ranges]] or [[networks]] or to negate validating value when [[negation]] is set to `true`.
37		*
38		* @see allowNegation
39		* @see networks
40		* @see ranges
41		*/
42		private const NEGATION_CHAR = '!';
43
44		/**
45		* @var array The network aliases, that can be used in {@see ranges()}.
46		* - key - alias name
47		* - value - array of strings. String can be an IP range, IP address or another alias. String can be
48		* negated with [[NEGATION_CHAR]] (independent of `negation` option).
49		*
50		* The following aliases are defined by default:
51		* - `*`: `any`
52		* - `any`: `0.0.0.0/0, ::/0`
53		* - `private`: `10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fd00::/8`
54		* - `multicast`: `224.0.0.0/4, ff00::/8`
55		* - `linklocal`: `169.254.0.0/16, fe80::/10`
56		* - `localhost`: `127.0.0.0/8', ::1`
57		* - `documentation`: `192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32`
58		* - `system`: `multicast, linklocal, localhost, documentation`
59		*/
60		private array $networks = [
61		'*' => ['any'],
62		'any' => ['0.0.0.0/0', '::/0'],
63		'private' => ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fd00::/8'],
64		'multicast' => ['224.0.0.0/4', 'ff00::/8'],
65		'linklocal' => ['169.254.0.0/16', 'fe80::/10'],
66		'localhost' => ['127.0.0.0/8', '::1'],
67		'documentation' => ['192.0.2.0/24', '198.51.100.0/24', '203.0.113.0/24', '2001:db8::/32'],
68		'system' => ['multicast', 'linklocal', 'localhost', 'documentation'],
69		];
70		/**
71		* @var bool whether the validating value can be an IPv6 address. Defaults to `true`.
72		*/
73		private bool $allowIpv6 = true;
74		/**
75		* @var bool whether the validating value can be an IPv4 address. Defaults to `true`.
76		*/
77		private bool $allowIpv4 = true;
78		/**
79		* @var bool whether the address can be an IP with CIDR subnet, like `192.168.10.0/24`.
80		* The following values are possible:
81		*
82		* - `false` - the address must not have a subnet (default).
83		* - `true` - specifying a subnet is optional.
84		*/
85		private bool $allowSubnet = false;
86		/**
87		* @var bool
88		*/
89		private bool $requireSubnet = false;
90		/**
91		* @var bool whether address may have a [[NEGATION_CHAR]] character at the beginning.
92		* Defaults to `false`.
93		*/
94		private bool $allowNegation = false;
95
96		/**
97		* @var string user-defined error message is used when validation fails due to the wrong IP address format.
98		*
99		* You may use the following placeholders in the message:
100		*
101		* - `{attribute}`: the label of the attribute being validated
102		* - `{value}`: the value of the attribute being validated
103		*/
104		private string $message = 'Must be a valid IP address.';
105		/**
106		* @var string user-defined error message is used when validation fails due to the disabled IPv6 validation.
107		*
108		* You may use the following placeholders in the message:
109		*
110		* - `{attribute}`: the label of the attribute being validated
111		* - `{value}`: the value of the attribute being validated
112		*
113		* @see allowIpv6
114		*/
115		private string $ipv6NotAllowed = 'Must not be an IPv6 address.';
116		/**
117		* @var string user-defined error message is used when validation fails due to the disabled IPv4 validation.
118		*
119		* You may use the following placeholders in the message:
120		*
121		* - `{attribute}`: the label of the attribute being validated
122		* - `{value}`: the value of the attribute being validated
123		*
124		* @see allowIpv4
125		*/
126		private string $ipv4NotAllowed = 'Must not be an IPv4 address.';
127		/**
128		* @var string user-defined error message is used when validation fails due to the wrong CIDR.
129		*
130		* You may use the following placeholders in the message:
131		*
132		* - `{attribute}`: the label of the attribute being validated
133		* - `{value}`: the value of the attribute being validated
134		* @see allowSubnet
135		*/
136		private string $wrongCidr = 'Contains wrong subnet mask.';
137		/**
138		* @var string user-defined error message is used when validation fails due to subnet [[subnet]] set to 'only',
139		* but the CIDR prefix is not set.
140		*
141		* You may use the following placeholders in the message:
142		*
143		* - `{attribute}`: the label of the attribute being validated
144		* - `{value}`: the value of the attribute being validated
145		*
146		* @see allowSubnet
147		*/
148		private string $noSubnet = 'Must be an IP address with specified subnet.';
149		/**
150		* @var string user-defined error message is used when validation fails
151		* due to [[subnet]] is false, but CIDR prefix is present.
152		*
153		* You may use the following placeholders in the message:
154		*
155		* - `{attribute}`: the label of the attribute being validated
156		* - `{value}`: the value of the attribute being validated
157		*
158		* @see allowSubnet
159		*/
160		private string $hasSubnet = 'Must not be a subnet.';
161		/**
162		* @var string user-defined error message is used when validation fails due to IP address
163		* is not not allowed by [[ranges]] check.
164		*
165		* You may use the following placeholders in the message:
166		*
167		* - `{attribute}`: the label of the attribute being validated
168		* - `{value}`: the value of the attribute being validated
169		*
170		* @see ranges
171		*/
172		private string $notInRange = 'Is not in the allowed range.';
173
174		/**
175		* @var array
176		*/
177		private array $ranges = [];
178
179		/**
180		* Set the IPv4 or IPv6 ranges that are allowed or forbidden.
181		*
182		* The following preparation tasks are performed:
183		*
184		* - Recursively substitutes aliases (described in [[networks]]) with their values.
185		* - Removes duplicates
186		*
187		* @param array $ranges the IPv4 or IPv6 ranges that are allowed or forbidden.
188		*
189		* When the array is empty, or the option not set, all IP addresses are allowed.
190		*
191		* Otherwise, the rules are checked sequentially until the first match is found.
192		* An IP address is forbidden, when it has not matched any of the rules.
193		*
194		* Example:
195		*
196		* ```php
197		* (new Ip())->ranges([
198		* '192.168.10.128'
199		* '!192.168.10.0/24',
200		* 'any' // allows any other IP addresses
201		* ]);
202		* ```
203		*
204		* In this example, access is allowed for all the IPv4 and IPv6 addresses excluding the `192.168.10.0/24` subnet.
205		* IPv4 address `192.168.10.128` is also allowed, because it is listed before the restriction.
206		*/
207	10	public function ranges(array $ranges): self
208		{
209	10	$this->ranges = $this->prepareRanges($ranges);
210	10	return $this;
211		}
212
213		/**
214		* Define network alias to be used in {@see ranges()}
215		*
216		* @param string $name name of the network
217		* @param array $ranges ranges
218		* @return self
219		*/
220	2	public function network(string $name, array $ranges): self
221		{
222	2	if (array_key_exists($name, $this->networks)) {
223	1	throw new \RuntimeException("Network alias \"{$name}\" already set");
224		}
225	2	$this->networks[$name] = $ranges;
226	2	return $this;
227		}
228
229	5	public function getRanges(): array
230		{
231	5	return $this->ranges;
232		}
233
234	2	public function allowIpv4(): self
235		{
236	2	$this->allowIpv4 = true;
237	2	return $this;
238		}
239
240	4	public function disallowIpv4(): self
241		{
242	4	$this->allowIpv4 = false;
243	4	return $this;
244		}
245
246	2	public function allowIpv6(): self
247		{
248	2	$this->allowIpv6 = true;
249	2	return $this;
250		}
251
252	2	public function disallowIpv6(): self
253		{
254	2	$this->allowIpv6 = false;
255	2	return $this;
256		}
257
258	3	public function allowNegation(): self
259		{
260	3	$this->allowNegation = true;
261	3	return $this;
262		}
263
264		public function disallowNegation(): self
265		{
266		$this->allowNegation = false;
267		return $this;
268		}
269
270	5	public function allowSubnet(): self
271		{
272	5	$this->allowSubnet = true;
273	5	$this->requireSubnet = false;
274	5	return $this;
275		}
276
277	3	public function requireSubnet(): self
278		{
279	3	$this->allowSubnet = true;
280	3	$this->requireSubnet = true;
281	3	return $this;
282		}
283
284		public function disallowSubnet(): self
285		{
286		$this->allowSubnet = false;
287		$this->requireSubnet = false;
288		return $this;
289		}
290
291	16	protected function validateValue($value, DataSetInterface $dataSet = null): Result
292		{
293	16	if (!$this->allowIpv4 && !$this->allowIpv6) {
294	1	throw new \RuntimeException('Both IPv4 and IPv6 checks can not be disabled at the same time');
295		}
296	15	$result = new Result();
297	15	if (!is_string($value)) {
298	4	$result->addError($this->formatMessage($this->message));
299	4	return $result;
300		}
301
302	11	if (preg_match($this->getIpParsePattern(), $value, $matches) === 0) {
303	6	$result->addError($this->formatMessage($this->message));
304	6	return $result;
305		}
306	8	$negation = !empty($matches['not'] ?? null);
307	8	$ip = $matches['ip'];
308	8	$cidr = $matches['cidr'] ?? null;
309	8	$ipCidr = $matches['ipCidr'];
310
311		try {
312	8	$ipVersion = IpHelper::getIpVersion($ip, false);
313		} catch (\InvalidArgumentException $e) {
314		$result->addError($this->formatMessage($this->message));
315		return $result;
316		}
317
318	8	if ($this->requireSubnet === true && $cidr === null) {
319	3	$result->addError($this->formatMessage($this->noSubnet));
320	3	return $result;
321		}
322	8	if ($this->allowSubnet === false && $cidr !== null) {
323	3	$result->addError($this->formatMessage($this->hasSubnet));
324	3	return $result;
325		}
326	8	if ($this->allowNegation === false && $negation) {
327	3	$result->addError($this->formatMessage($this->message));
328	3	return $result;
329		}
330	8	if ($ipVersion === IpHelper::IPV6 && !$this->allowIpv6) {
331	1	$result->addError($this->formatMessage($this->ipv6NotAllowed));
332	1	return $result;
333		}
334	8	if ($ipVersion === IpHelper::IPV4 && !$this->allowIpv4) {
335	2	$result->addError($this->formatMessage($this->ipv4NotAllowed));
336	2	return $result;
337		}
338	8	if (!$result->isValid()) {
339		return $result;
340		}
341	8	if ($cidr !== null) {
342		try {
343	5	$cidr = IpHelper::getCidrBits($ipCidr);
		0 ignored issues – show Unused Code introduced 2019-11-01 07:42 UTC by Report Bug Copy Issue Report The assignment to `$cidr` is dead and can be removed. Loading history...
344	2	} catch (\InvalidArgumentException $e) {
345	2	$result->addError($this->formatMessage($this->wrongCidr));
346	2	return $result;
347		}
348		}
349	8	if (!$this->isAllowed($ipCidr)) {
350	4	$result->addError($this->formatMessage($this->notInRange));
351	4	return $result;
352		}
353
354	8	return $result;
355		}
356
357		/**
358		* The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list.
359		*
360		* @see ranges
361		*/
362	8	private function isAllowed(string $ip): bool
363		{
364	8	if (empty($this->ranges)) {
365	3	return true;
366		}
367
368	5	foreach ($this->ranges as $string) {
369	5	[$isNegated, $range] = $this->parseNegatedRange($string);
370	5	if (IpHelper::inRange($ip, $range)) {
371	5	return !$isNegated;
372		}
373		}
374
375	3	return false;
376		}
377
378		/**
379		* Parses IP address/range for the negation with [[NEGATION_CHAR]].
380		*
381		* @param $string
382		* @return array `[0 => bool, 1 => string]`
383		* - boolean: whether the string is negated
384		* - string: the string without negation (when the negation were present)
385		*/
386	10	private function parseNegatedRange($string): array
387		{
388	10	$isNegated = strpos($string, static::NEGATION_CHAR) === 0;
389	10	return [$isNegated, $isNegated ? substr($string, strlen(static::NEGATION_CHAR)) : $string];
390		}
391
392		/**
393		* Prepares array to fill in [[ranges]].
394		*
395		* - Recursively substitutes aliases, described in [[networks]] with their values,
396		* - Removes duplicates.
397		*
398		* @param array $ranges
399		* @return array
400		* @see networks
401		*/
402	10	private function prepareRanges(array $ranges): array
403		{
404	10	$result = [];
405	10	foreach ($ranges as $string) {
406	10	[$isRangeNegated, $range] = $this->parseNegatedRange($string);
407	10	if (isset($this->networks[$range])) {
408	8	$replacements = $this->prepareRanges($this->networks[$range]);
409	8	foreach ($replacements as &$replacement) {
410	8	[$isReplacementNegated, $replacement] = $this->parseNegatedRange($replacement);
411	8	$result[] = ($isRangeNegated && !$isReplacementNegated ? static::NEGATION_CHAR : '') . $replacement;
412		}
413		} else {
414	10	$result[] = $string;
415		}
416		}
417
418	10	return array_unique($result);
419		}
420
421		/**
422		* Used to get the Regexp pattern for initial IP address parsing.
423		* @return string
424		*/
425	11	public function getIpParsePattern(): string
426		{
427	11	return '/^(?<not>' . preg_quote(static::NEGATION_CHAR, '/') . ')?(?<ipCidr>(?<ip>(?:' . IpHelper::IPV4_PATTERN . ')\|(?:' . IpHelper::IPV6_PATTERN . '))(?:\/(?<cidr>-?\d+))?)$/';
428		}
429		}
430

yiisoft / validator

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Ip::allowNegation() A

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