Ip::prepareRanges() - Code Metrics - Inspection of "Update logo" - yiisoft/validator - Measure and Improve Code Quality continuously with Scrutinizer

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by Aleksei

created 2020-12-20 15:51 UTC

Ip::prepareRanges() A

↳ Parent: Ip

Complexity

Conditions	6
Paths	7

Size

Total Lines	17
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	6

Importance

Changes

Metric	Value
cc	6
eloc	11
nc	7
nop	1
dl	0
loc	17
ccs	11
cts	11
cp	1
crap	6
rs	9.2222
c	0
b	0
f	0

<?php

declare(strict_types=1);

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 = [];

    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->translateMessage($this->message));
            return $result;
        }

        if (preg_match($this->getIpParsePattern(), $value, $matches) === 0) {
            $result->addError($this->translateMessage($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->translateMessage($this->message));
            return $result;
        }

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

        return $result;
    }

    /**
     * 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
    {
        $new = clone $this;
        $new->ranges = $this->prepareRanges($ranges);
        return $new;
    }

    /**
     * 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");
        }

        $new = clone $this;
        $new->networks[$name] = $ranges;
        return $new;
    }

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

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

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

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

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

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

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

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

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

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

    /**
     * The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list.
     *
     * @return bool
     *
     * @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+))?)$/';
    }

    public function getOptions(): array
    {
        return array_merge(
            parent::getOptions(),
            [
                'message' => $this->translateMessage($this->message),
                'allowIpv4' => $this->allowIpv4,
                'ipv4NotAllowedMessage' => $this->translateMessage($this->ipv4NotAllowed),
                'allowIpv6' => $this->allowIpv6,
                'ipv6NotAllowedMessage' => $this->translateMessage($this->ipv6NotAllowed),
                'allowSubnet' => $this->allowSubnet,
                'hasSubnetMessage' => $this->translateMessage($this->hasSubnet),
                'requireSubnet' => $this->requireSubnet,
                'noSubnetMessage' => $this->translateMessage($this->noSubnet),
                'allowNegation' => $this->allowNegation,
                'wrongCidrMessage' => $this->translateMessage($this->wrongCidr),
                'ranges' => $this->ranges,
                'notInRangeMessage' => $this->translateMessage($this->notInRange),
            ],
        );
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Validator\Rule;
6
7		use Yiisoft\NetworkUtilities\IpHelper;
8		use Yiisoft\Validator\DataSetInterface;
9		use Yiisoft\Validator\Result;
10		use Yiisoft\Validator\Rule;
11
12		/**
13		* The validator checks if the attribute value is a valid IPv4/IPv6 address or subnet.
14		*
15		* It also may change attribute's value if normalization of IPv6 expansion is enabled.
16		*
17		* The following are examples of validation rules using this validator:
18		*
19		* ```php
20		* ['ip_address', 'ip'], // IPv4 or IPv6 address
21		* ['ip_address', 'ip', 'ipv6' => false], // IPv4 address (IPv6 is disabled)
22		* ['ip_address', 'ip', 'subnet' => true], // requires a CIDR prefix (like 10.0.0.1/24) for the IP address
23		* ['ip_address', 'ip', 'subnet' => null], // CIDR prefix is optional
24		* ['ip_address', 'ip', 'subnet' => null, 'normalize' => true], // CIDR prefix is optional and will be added when missing
25		* ['ip_address', 'ip', 'ranges' => ['192.168.0.0/24']], // only IP addresses from the specified subnet are allowed
26		* ['ip_address', 'ip', 'ranges' => ['!192.168.0.0/24', 'any']], // any IP is allowed except IP in the specified subnet
27		* ['ip_address', 'ip', 'expandIPv6' => true], // expands IPv6 address to a full notation format
28		* ```
29		*
30		* @property array $ranges The IPv4 or IPv6 ranges that are allowed or forbidden. See [[setRanges()]] for
31		* detailed description.
32		*/
33		class Ip extends Rule
34		{
35		/**
36		* Negation char.
37		*
38		* Used to negate [[ranges]] or [[networks]] or to negate validating value when [[negation]] is set to `true`.
39		*
40		* @see allowNegation
41		* @see networks
42		* @see ranges
43		*/
44		private const NEGATION_CHAR = '!';
45
46		/**
47		* @var array The network aliases, that can be used in {@see ranges()}.
48		* - key - alias name
49		* - value - array of strings. String can be an IP range, IP address or another alias. String can be
50		* negated with [[NEGATION_CHAR]] (independent of `negation` option).
51		*
52		* The following aliases are defined by default:
53		* - `*`: `any`
54		* - `any`: `0.0.0.0/0, ::/0`
55		* - `private`: `10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fd00::/8`
56		* - `multicast`: `224.0.0.0/4, ff00::/8`
57		* - `linklocal`: `169.254.0.0/16, fe80::/10`
58		* - `localhost`: `127.0.0.0/8', ::1`
59		* - `documentation`: `192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32`
60		* - `system`: `multicast, linklocal, localhost, documentation`
61		*/
62		private array $networks = [
63		'*' => ['any'],
64		'any' => ['0.0.0.0/0', '::/0'],
65		'private' => ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fd00::/8'],
66		'multicast' => ['224.0.0.0/4', 'ff00::/8'],
67		'linklocal' => ['169.254.0.0/16', 'fe80::/10'],
68		'localhost' => ['127.0.0.0/8', '::1'],
69		'documentation' => ['192.0.2.0/24', '198.51.100.0/24', '203.0.113.0/24', '2001:db8::/32'],
70		'system' => ['multicast', 'linklocal', 'localhost', 'documentation'],
71		];
72
73		/**
74		* @var bool whether the validating value can be an IPv6 address. Defaults to `true`.
75		*/
76		private bool $allowIpv6 = true;
77
78		/**
79		* @var bool whether the validating value can be an IPv4 address. Defaults to `true`.
80		*/
81		private bool $allowIpv4 = true;
82
83		/**
84		* @var bool whether the address can be an IP with CIDR subnet, like `192.168.10.0/24`.
85		* The following values are possible:
86		*
87		* - `false` - the address must not have a subnet (default).
88		* - `true` - specifying a subnet is optional.
89		*/
90		private bool $allowSubnet = false;
91
92		/**
93		* @var bool
94		*/
95		private bool $requireSubnet = false;
96
97		/**
98		* @var bool whether address may have a [[NEGATION_CHAR]] character at the beginning.
99		* Defaults to `false`.
100		*/
101		private bool $allowNegation = false;
102
103		/**
104		* @var string user-defined error message is used when validation fails due to the wrong IP address format.
105		*
106		* You may use the following placeholders in the message:
107		*
108		* - `{attribute}`: the label of the attribute being validated
109		* - `{value}`: the value of the attribute being validated
110		*/
111		private string $message = 'Must be a valid IP address.';
112
113		/**
114		* @var string user-defined error message is used when validation fails due to the disabled IPv6 validation.
115		*
116		* You may use the following placeholders in the message:
117		*
118		* - `{attribute}`: the label of the attribute being validated
119		* - `{value}`: the value of the attribute being validated
120		*
121		* @see allowIpv6
122		*/
123		private string $ipv6NotAllowed = 'Must not be an IPv6 address.';
124
125		/**
126		* @var string user-defined error message is used when validation fails due to the disabled IPv4 validation.
127		*
128		* You may use the following placeholders in the message:
129		*
130		* - `{attribute}`: the label of the attribute being validated
131		* - `{value}`: the value of the attribute being validated
132		*
133		* @see allowIpv4
134		*/
135		private string $ipv4NotAllowed = 'Must not be an IPv4 address.';
136
137		/**
138		* @var string user-defined error message is used when validation fails due to the wrong CIDR.
139		*
140		* You may use the following placeholders in the message:
141		*
142		* - `{attribute}`: the label of the attribute being validated
143		* - `{value}`: the value of the attribute being validated
144		*
145		* @see allowSubnet
146		*/
147		private string $wrongCidr = 'Contains wrong subnet mask.';
148
149		/**
150		* @var string user-defined error message is used when validation fails due to subnet [[subnet]] set to 'only',
151		* but the CIDR prefix is not set.
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 $noSubnet = 'Must be an IP address with specified subnet.';
161
162		/**
163		* @var string user-defined error message is used when validation fails
164		* due to [[subnet]] is false, but CIDR prefix is present.
165		*
166		* You may use the following placeholders in the message:
167		*
168		* - `{attribute}`: the label of the attribute being validated
169		* - `{value}`: the value of the attribute being validated
170		*
171		* @see allowSubnet
172		*/
173		private string $hasSubnet = 'Must not be a subnet.';
174
175		/**
176		* @var string user-defined error message is used when validation fails due to IP address
177		* is not not allowed by [[ranges]] check.
178		*
179		* You may use the following placeholders in the message:
180		*
181		* - `{attribute}`: the label of the attribute being validated
182		* - `{value}`: the value of the attribute being validated
183		*
184		* @see ranges
185		*/
186		private string $notInRange = 'Is not in the allowed range.';
187
188		/**
189		* @var array
190		*/
191		private array $ranges = [];
192
193	16	protected function validateValue($value, DataSetInterface $dataSet = null): Result
194		{
195	16	if (!$this->allowIpv4 && !$this->allowIpv6) {
196	1	throw new \RuntimeException('Both IPv4 and IPv6 checks can not be disabled at the same time');
197		}
198	15	$result = new Result();
199	15	if (!is_string($value)) {
200	4	$result->addError($this->translateMessage($this->message));
201	4	return $result;
202		}
203
204	11	if (preg_match($this->getIpParsePattern(), $value, $matches) === 0) {
205	6	$result->addError($this->translateMessage($this->message));
206	6	return $result;
207		}
208	8	$negation = !empty($matches['not'] ?? null);
209	8	$ip = $matches['ip'];
210	8	$cidr = $matches['cidr'] ?? null;
211	8	$ipCidr = $matches['ipCidr'];
212
213		try {
214	8	$ipVersion = IpHelper::getIpVersion($ip, false);
215		} catch (\InvalidArgumentException $e) {
216		$result->addError($this->translateMessage($this->message));
217		return $result;
218		}
219
220	8	if ($this->requireSubnet === true && $cidr === null) {
221	3	$result->addError($this->translateMessage($this->noSubnet));
222	3	return $result;
223		}
224	8	if ($this->allowSubnet === false && $cidr !== null) {
225	3	$result->addError($this->translateMessage($this->hasSubnet));
226	3	return $result;
227		}
228	8	if ($this->allowNegation === false && $negation) {
229	3	$result->addError($this->translateMessage($this->message));
230	3	return $result;
231		}
232	8	if ($ipVersion === IpHelper::IPV6 && !$this->allowIpv6) {
233	1	$result->addError($this->translateMessage($this->ipv6NotAllowed));
234	1	return $result;
235		}
236	8	if ($ipVersion === IpHelper::IPV4 && !$this->allowIpv4) {
237	2	$result->addError($this->translateMessage($this->ipv4NotAllowed));
238	2	return $result;
239		}
240	8	if (!$result->isValid()) {
241		return $result;
242		}
243	8	if ($cidr !== null) {
244		try {
245	5	IpHelper::getCidrBits($ipCidr);
246	2	} catch (\InvalidArgumentException $e) {
247	2	$result->addError($this->translateMessage($this->wrongCidr));
248	2	return $result;
249		}
250		}
251	8	if (!$this->isAllowed($ipCidr)) {
252	4	$result->addError($this->translateMessage($this->notInRange));
253	4	return $result;
254		}
255
256	8	return $result;
257		}
258
259		/**
260		* Set the IPv4 or IPv6 ranges that are allowed or forbidden.
261		*
262		* The following preparation tasks are performed:
263		*
264		* - Recursively substitutes aliases (described in [[networks]]) with their values.
265		* - Removes duplicates
266		*
267		* @param array $ranges the IPv4 or IPv6 ranges that are allowed or forbidden.
268		*
269		* When the array is empty, or the option not set, all IP addresses are allowed.
270		*
271		* Otherwise, the rules are checked sequentially until the first match is found.
272		* An IP address is forbidden, when it has not matched any of the rules.
273		*
274		* Example:
275		*
276		* ```php
277		* (new Ip())->ranges([
278		* '192.168.10.128'
279		* '!192.168.10.0/24',
280		* 'any' // allows any other IP addresses
281		* ]);
282		* ```
283		*
284		* In this example, access is allowed for all the IPv4 and IPv6 addresses excluding the `192.168.10.0/24` subnet.
285		* IPv4 address `192.168.10.128` is also allowed, because it is listed before the restriction.
286		*/
287	10	public function ranges(array $ranges): self
288		{
289	10	$new = clone $this;
290	10	$new->ranges = $this->prepareRanges($ranges);
291	10	return $new;
292		}
293
294		/**
295		* Define network alias to be used in {@see ranges()}
296		*
297		* @param string $name name of the network
298		* @param array $ranges ranges
299		*
300		* @return self
301		*/
302	2	public function network(string $name, array $ranges): self
303		{
304	2	if (array_key_exists($name, $this->networks)) {
305	1	throw new \RuntimeException("Network alias \"{$name}\" already set");
306		}
307
308	2	$new = clone $this;
309	2	$new->networks[$name] = $ranges;
310	2	return $new;
311		}
312
313	5	public function getRanges(): array
314		{
315	5	return $this->ranges;
316		}
317
318	2	public function allowIpv4(): self
319		{
320	2	$new = clone $this;
321	2	$new->allowIpv4 = true;
322	2	return $new;
323		}
324
325	4	public function disallowIpv4(): self
326		{
327	4	$new = clone $this;
328	4	$new->allowIpv4 = false;
329	4	return $new;
330		}
331
332	2	public function allowIpv6(): self
333		{
334	2	$new = clone $this;
335	2	$new->allowIpv6 = true;
336	2	return $new;
337		}
338
339	2	public function disallowIpv6(): self
340		{
341	2	$new = clone $this;
342	2	$new->allowIpv6 = false;
343	2	return $new;
344		}
345
346	3	public function allowNegation(): self
347		{
348	3	$new = clone $this;
349	3	$new->allowNegation = true;
350	3	return $new;
351		}
352
353		public function disallowNegation(): self
354		{
355		$new = clone $this;
356		$new->allowNegation = false;
357		return $new;
358		}
359
360	5	public function allowSubnet(): self
361		{
362	5	$new = clone $this;
363	5	$new->allowSubnet = true;
364	5	$new->requireSubnet = false;
365	5	return $new;
366		}
367
368	3	public function requireSubnet(): self
369		{
370	3	$new = clone $this;
371	3	$new->allowSubnet = true;
372	3	$new->requireSubnet = true;
373	3	return $new;
374		}
375
376		public function disallowSubnet(): self
377		{
378		$new = clone $this;
379		$new->allowSubnet = false;
380		$new->requireSubnet = false;
381		return $new;
382		}
383
384		/**
385		* The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list.
386		*
387		* @return bool
388		*
389		* @see ranges
390		*/
391	8	private function isAllowed(string $ip): bool
392		{
393	8	if (empty($this->ranges)) {
394	3	return true;
395		}
396
397	5	foreach ($this->ranges as $string) {
398	5	[$isNegated, $range] = $this->parseNegatedRange($string);
399	5	if (IpHelper::inRange($ip, $range)) {
400	5	return !$isNegated;
401		}
402		}
403
404	3	return false;
405		}
406
407		/**
408		* Parses IP address/range for the negation with [[NEGATION_CHAR]].
409		*
410		* @param $string
411		*
412		* @return array `[0 => bool, 1 => string]`
413		* - boolean: whether the string is negated
414		* - string: the string without negation (when the negation were present)
415		*/
416	10	private function parseNegatedRange($string): array
417		{
418	10	$isNegated = strpos($string, static::NEGATION_CHAR) === 0;
419	10	return [$isNegated, $isNegated ? substr($string, strlen(static::NEGATION_CHAR)) : $string];
420		}
421
422		/**
423		* Prepares array to fill in [[ranges]].
424		*
425		* - Recursively substitutes aliases, described in [[networks]] with their values,
426		* - Removes duplicates.
427		*
428		* @param array $ranges
429		*
430		* @return array
431		*
432		* @see networks
433		*/
434	10	private function prepareRanges(array $ranges): array
435		{
436	10	$result = [];
437	10	foreach ($ranges as $string) {
438	10	[$isRangeNegated, $range] = $this->parseNegatedRange($string);
439	10	if (isset($this->networks[$range])) {
440	8	$replacements = $this->prepareRanges($this->networks[$range]);
441	8	foreach ($replacements as &$replacement) {
442	8	[$isReplacementNegated, $replacement] = $this->parseNegatedRange($replacement);
443	8	$result[] = ($isRangeNegated && !$isReplacementNegated ? static::NEGATION_CHAR : '') . $replacement;
444		}
445		} else {
446	10	$result[] = $string;
447		}
448		}
449
450	10	return array_unique($result);
451		}
452
453		/**
454		* Used to get the Regexp pattern for initial IP address parsing.
455		*
456		* @return string
457		*/
458	11	public function getIpParsePattern(): string
459		{
460	11	return '/^(?<not>' . preg_quote(
461	11	static::NEGATION_CHAR,
462	11	'/'
463	11	) . ')?(?<ipCidr>(?<ip>(?:' . IpHelper::IPV4_PATTERN . ')\|(?:' . IpHelper::IPV6_PATTERN . '))(?:\/(?<cidr>-?\d+))?)$/';
464		}
465
466	10	public function getOptions(): array
467		{
468	10	return array_merge(
469	10	parent::getOptions(),
470		[
471	10	'message' => $this->translateMessage($this->message),
472	10	'allowIpv4' => $this->allowIpv4,
473	10	'ipv4NotAllowedMessage' => $this->translateMessage($this->ipv4NotAllowed),
474	10	'allowIpv6' => $this->allowIpv6,
475	10	'ipv6NotAllowedMessage' => $this->translateMessage($this->ipv6NotAllowed),
476	10	'allowSubnet' => $this->allowSubnet,
477	10	'hasSubnetMessage' => $this->translateMessage($this->hasSubnet),
478	10	'requireSubnet' => $this->requireSubnet,
479	10	'noSubnetMessage' => $this->translateMessage($this->noSubnet),
480	10	'allowNegation' => $this->allowNegation,
481	10	'wrongCidrMessage' => $this->translateMessage($this->wrongCidr),
482	10	'ranges' => $this->ranges,
483	10	'notInRangeMessage' => $this->translateMessage($this->notInRange),
484		],
485		);
486		}
487		}
488

yiisoft / validator

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Ip::prepareRanges() A

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