582 lines
19 KiB
PHP
582 lines
19 KiB
PHP
<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\validators;
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use Yii;
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use yii\base\InvalidConfigException;
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use yii\helpers\Html;
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use yii\helpers\IpHelper;
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use yii\helpers\Json;
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use yii\web\JsExpression;
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/**
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* The validator checks if the attribute value is a valid IPv4/IPv6 address or subnet.
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*
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* It also may change attribute's value if normalization of IPv6 expansion is enabled.
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*
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* The following are examples of validation rules using this validator:
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*
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* ```php
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* ['ip_address', 'ip'], // IPv4 or IPv6 address
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* ['ip_address', 'ip', 'ipv6' => false], // IPv4 address (IPv6 is disabled)
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* ['ip_address', 'ip', 'subnet' => true], // requires a CIDR prefix (like 10.0.0.1/24) for the IP address
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* ['ip_address', 'ip', 'subnet' => null], // CIDR prefix is optional
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* ['ip_address', 'ip', 'subnet' => null, 'normalize' => true], // CIDR prefix is optional and will be added when missing
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* ['ip_address', 'ip', 'ranges' => ['192.168.0.0/24']], // only IP addresses from the specified subnet are allowed
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* ['ip_address', 'ip', 'ranges' => ['!192.168.0.0/24', 'any']], // any IP is allowed except IP in the specified subnet
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* ['ip_address', 'ip', 'expandIPv6' => true], // expands IPv6 address to a full notation format
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* ```
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*
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* @property array $ranges The IPv4 or IPv6 ranges that are allowed or forbidden. See [[setRanges()]] for
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* detailed description. Note that the type of this property differs in getter and setter. See [[getRanges()]]
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* and [[setRanges()]] for details.
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*
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* @author Dmitry Naumenko <d.naumenko.a@gmail.com>
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* @since 2.0.7
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*/
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class IpValidator extends Validator
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{
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/**
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* Negation char.
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*
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* Used to negate [[ranges]] or [[networks]] or to negate validating value when [[negation]] is set to `true`.
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* @see negation
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* @see networks
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* @see ranges
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*/
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const NEGATION_CHAR = '!';
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/**
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* @var array The network aliases, that can be used in [[ranges]].
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* - key - alias name
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* - value - array of strings. String can be an IP range, IP address or another alias. String can be
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* negated with [[NEGATION_CHAR]] (independent of `negation` option).
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*
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* The following aliases are defined by default:
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* - `*`: `any`
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* - `any`: `0.0.0.0/0, ::/0`
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* - `private`: `10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fd00::/8`
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* - `multicast`: `224.0.0.0/4, ff00::/8`
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* - `linklocal`: `169.254.0.0/16, fe80::/10`
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* - `localhost`: `127.0.0.0/8', ::1`
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* - `documentation`: `192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32`
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* - `system`: `multicast, linklocal, localhost, documentation`
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*/
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public $networks = [
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'*' => ['any'],
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'any' => ['0.0.0.0/0', '::/0'],
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'private' => ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fd00::/8'],
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'multicast' => ['224.0.0.0/4', 'ff00::/8'],
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'linklocal' => ['169.254.0.0/16', 'fe80::/10'],
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'localhost' => ['127.0.0.0/8', '::1'],
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'documentation' => ['192.0.2.0/24', '198.51.100.0/24', '203.0.113.0/24', '2001:db8::/32'],
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'system' => ['multicast', 'linklocal', 'localhost', 'documentation'],
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];
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/**
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* @var bool whether the validating value can be an IPv6 address. Defaults to `true`.
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*/
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public $ipv6 = true;
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/**
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* @var bool whether the validating value can be an IPv4 address. Defaults to `true`.
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*/
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public $ipv4 = true;
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/**
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* @var bool whether the address can be an IP with CIDR subnet, like `192.168.10.0/24`.
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* The following values are possible:
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*
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* - `false` - the address must not have a subnet (default).
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* - `true` - specifying a subnet is required.
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* - `null` - specifying a subnet is optional.
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*/
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public $subnet = false;
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/**
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* @var bool whether to add the CIDR prefix with the smallest length (32 for IPv4 and 128 for IPv6) to an
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* address without it. Works only when `subnet` is not `false`. For example:
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* - `10.0.1.5` will normalized to `10.0.1.5/32`
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* - `2008:db0::1` will be normalized to `2008:db0::1/128`
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* Defaults to `false`.
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* @see subnet
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*/
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public $normalize = false;
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/**
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* @var bool whether address may have a [[NEGATION_CHAR]] character at the beginning.
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* Defaults to `false`.
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*/
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public $negation = false;
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/**
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* @var bool whether to expand an IPv6 address to the full notation format.
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* Defaults to `false`.
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*/
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public $expandIPv6 = false;
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/**
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* @var string Regexp-pattern to validate IPv4 address
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*/
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public $ipv4Pattern = '/^(?:(?:2(?:[0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9])\.){3}(?:(?:2([0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9]))$/';
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/**
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* @var string Regexp-pattern to validate IPv6 address
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*/
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public $ipv6Pattern = '/^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$/';
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/**
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* @var string user-defined error message is used when validation fails due to the wrong IP address format.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*/
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public $message;
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/**
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* @var string user-defined error message is used when validation fails due to the disabled IPv6 validation.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*
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* @see ipv6
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*/
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public $ipv6NotAllowed;
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/**
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* @var string user-defined error message is used when validation fails due to the disabled IPv4 validation.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*
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* @see ipv4
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*/
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public $ipv4NotAllowed;
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/**
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* @var string user-defined error message is used when validation fails due to the wrong CIDR.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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* @see subnet
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*/
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public $wrongCidr;
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/**
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* @var string user-defined error message is used when validation fails due to subnet [[subnet]] set to 'only',
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* but the CIDR prefix is not set.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*
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* @see subnet
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*/
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public $noSubnet;
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/**
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* @var string user-defined error message is used when validation fails
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* due to [[subnet]] is false, but CIDR prefix is present.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*
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* @see subnet
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*/
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public $hasSubnet;
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/**
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* @var string user-defined error message is used when validation fails due to IP address
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* is not not allowed by [[ranges]] check.
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*
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* You may use the following placeholders in the message:
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*
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* - `{attribute}`: the label of the attribute being validated
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* - `{value}`: the value of the attribute being validated
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*
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* @see ranges
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*/
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public $notInRange;
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/**
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* @var array
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*/
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private $_ranges = [];
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/**
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* {@inheritdoc}
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*/
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public function init()
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{
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parent::init();
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if (!$this->ipv4 && !$this->ipv6) {
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throw new InvalidConfigException('Both IPv4 and IPv6 checks can not be disabled at the same time');
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}
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if ($this->message === null) {
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$this->message = Yii::t('yii', '{attribute} must be a valid IP address.');
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}
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if ($this->ipv6NotAllowed === null) {
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$this->ipv6NotAllowed = Yii::t('yii', '{attribute} must not be an IPv6 address.');
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}
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if ($this->ipv4NotAllowed === null) {
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$this->ipv4NotAllowed = Yii::t('yii', '{attribute} must not be an IPv4 address.');
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}
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if ($this->wrongCidr === null) {
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$this->wrongCidr = Yii::t('yii', '{attribute} contains wrong subnet mask.');
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}
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if ($this->noSubnet === null) {
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$this->noSubnet = Yii::t('yii', '{attribute} must be an IP address with specified subnet.');
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}
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if ($this->hasSubnet === null) {
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$this->hasSubnet = Yii::t('yii', '{attribute} must not be a subnet.');
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}
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if ($this->notInRange === null) {
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$this->notInRange = Yii::t('yii', '{attribute} is not in the allowed range.');
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}
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}
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/**
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* Set the IPv4 or IPv6 ranges that are allowed or forbidden.
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*
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* The following preparation tasks are performed:
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*
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* - Recursively substitutes aliases (described in [[networks]]) with their values.
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* - Removes duplicates
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*
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* @property array the IPv4 or IPv6 ranges that are allowed or forbidden.
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* See [[setRanges()]] for detailed description.
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* @param array|string $ranges the IPv4 or IPv6 ranges that are allowed or forbidden.
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*
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* When the array is empty, or the option not set, all IP addresses are allowed.
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*
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* Otherwise, the rules are checked sequentially until the first match is found.
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* An IP address is forbidden, when it has not matched any of the rules.
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*
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* Example:
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*
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* ```php
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* [
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* 'ranges' => [
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* '192.168.10.128'
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* '!192.168.10.0/24',
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* 'any' // allows any other IP addresses
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* ]
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* ]
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* ```
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*
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* In this example, access is allowed for all the IPv4 and IPv6 addresses excluding the `192.168.10.0/24` subnet.
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* IPv4 address `192.168.10.128` is also allowed, because it is listed before the restriction.
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*/
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public function setRanges($ranges)
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{
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$this->_ranges = $this->prepareRanges((array) $ranges);
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}
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/**
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* @return array The IPv4 or IPv6 ranges that are allowed or forbidden.
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*/
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public function getRanges()
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{
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return $this->_ranges;
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}
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/**
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* {@inheritdoc}
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*/
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protected function validateValue($value)
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{
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$result = $this->validateSubnet($value);
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if (is_array($result)) {
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$result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]);
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return $result;
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}
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return null;
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}
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/**
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* {@inheritdoc}
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*/
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public function validateAttribute($model, $attribute)
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{
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$value = $model->$attribute;
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$result = $this->validateSubnet($value);
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if (is_array($result)) {
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$result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]);
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$this->addError($model, $attribute, $result[0], $result[1]);
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} else {
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$model->$attribute = $result;
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}
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}
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/**
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* Validates an IPv4/IPv6 address or subnet.
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*
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* @param $ip string
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* @return string|array
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* string - the validation was successful;
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* array - an error occurred during the validation.
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* Array[0] contains the text of an error, array[1] contains values for the placeholders in the error message
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*/
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private function validateSubnet($ip)
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{
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if (!is_string($ip)) {
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return [$this->message, []];
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}
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$negation = null;
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$cidr = null;
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$isCidrDefault = false;
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if (preg_match($this->getIpParsePattern(), $ip, $matches)) {
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$negation = ($matches[1] !== '') ? $matches[1] : null;
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$ip = $matches[2];
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$cidr = isset($matches[4]) ? $matches[4] : null;
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}
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if ($this->subnet === true && $cidr === null) {
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return [$this->noSubnet, []];
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}
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if ($this->subnet === false && $cidr !== null) {
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return [$this->hasSubnet, []];
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}
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if ($this->negation === false && $negation !== null) {
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return [$this->message, []];
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}
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if ($this->getIpVersion($ip) === IpHelper::IPV6) {
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if ($cidr !== null) {
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if ($cidr > IpHelper::IPV6_ADDRESS_LENGTH || $cidr < 0) {
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return [$this->wrongCidr, []];
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}
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} else {
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$isCidrDefault = true;
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$cidr = IpHelper::IPV6_ADDRESS_LENGTH;
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}
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if (!$this->validateIPv6($ip)) {
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return [$this->message, []];
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}
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if (!$this->ipv6) {
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return [$this->ipv6NotAllowed, []];
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}
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if ($this->expandIPv6) {
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$ip = $this->expandIPv6($ip);
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}
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} else {
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if ($cidr !== null) {
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if ($cidr > IpHelper::IPV4_ADDRESS_LENGTH || $cidr < 0) {
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return [$this->wrongCidr, []];
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}
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} else {
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$isCidrDefault = true;
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$cidr = IpHelper::IPV4_ADDRESS_LENGTH;
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}
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if (!$this->validateIPv4($ip)) {
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return [$this->message, []];
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}
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if (!$this->ipv4) {
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return [$this->ipv4NotAllowed, []];
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}
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}
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if (!$this->isAllowed($ip, $cidr)) {
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return [$this->notInRange, []];
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}
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$result = $negation . $ip;
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if ($this->subnet !== false && (!$isCidrDefault || $isCidrDefault && $this->normalize)) {
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$result .= "/$cidr";
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}
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return $result;
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}
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/**
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* Expands an IPv6 address to it's full notation.
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*
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* For example `2001:db8::1` will be expanded to `2001:0db8:0000:0000:0000:0000:0000:0001`.
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*
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* @param string $ip the original IPv6
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* @return string the expanded IPv6
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*/
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private function expandIPv6($ip)
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{
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return IpHelper::expandIPv6($ip);
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}
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/**
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* The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list.
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*
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* @param string $ip
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* @param int $cidr
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* @return bool
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* @see ranges
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*/
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private function isAllowed($ip, $cidr)
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{
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if (empty($this->ranges)) {
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return true;
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}
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foreach ($this->ranges as $string) {
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list($isNegated, $range) = $this->parseNegatedRange($string);
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if ($this->inRange($ip, $cidr, $range)) {
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return !$isNegated;
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}
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}
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return false;
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}
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|
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/**
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* Parses IP address/range for the negation with [[NEGATION_CHAR]].
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*
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* @param $string
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* @return array `[0 => bool, 1 => string]`
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* - boolean: whether the string is negated
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* - string: the string without negation (when the negation were present)
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*/
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private function parseNegatedRange($string)
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{
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$isNegated = strpos($string, static::NEGATION_CHAR) === 0;
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return [$isNegated, $isNegated ? substr($string, strlen(static::NEGATION_CHAR)) : $string];
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}
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/**
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* Prepares array to fill in [[ranges]].
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*
|
|
* - Recursively substitutes aliases, described in [[networks]] with their values,
|
|
* - Removes duplicates.
|
|
*
|
|
* @param $ranges
|
|
* @return array
|
|
* @see networks
|
|
*/
|
|
private function prepareRanges($ranges)
|
|
{
|
|
$result = [];
|
|
foreach ($ranges as $string) {
|
|
list($isRangeNegated, $range) = $this->parseNegatedRange($string);
|
|
if (isset($this->networks[$range])) {
|
|
$replacements = $this->prepareRanges($this->networks[$range]);
|
|
foreach ($replacements as &$replacement) {
|
|
list($isReplacementNegated, $replacement) = $this->parseNegatedRange($replacement);
|
|
$result[] = ($isRangeNegated && !$isReplacementNegated ? static::NEGATION_CHAR : '') . $replacement;
|
|
}
|
|
} else {
|
|
$result[] = $string;
|
|
}
|
|
}
|
|
|
|
return array_unique($result);
|
|
}
|
|
|
|
/**
|
|
* Validates IPv4 address.
|
|
*
|
|
* @param string $value
|
|
* @return bool
|
|
*/
|
|
protected function validateIPv4($value)
|
|
{
|
|
return preg_match($this->ipv4Pattern, $value) !== 0;
|
|
}
|
|
|
|
/**
|
|
* Validates IPv6 address.
|
|
*
|
|
* @param string $value
|
|
* @return bool
|
|
*/
|
|
protected function validateIPv6($value)
|
|
{
|
|
return preg_match($this->ipv6Pattern, $value) !== 0;
|
|
}
|
|
|
|
/**
|
|
* Gets the IP version.
|
|
*
|
|
* @param string $ip
|
|
* @return int
|
|
*/
|
|
private function getIpVersion($ip)
|
|
{
|
|
return IpHelper::getIpVersion($ip);
|
|
}
|
|
|
|
/**
|
|
* Used to get the Regexp pattern for initial IP address parsing.
|
|
* @return string
|
|
*/
|
|
private function getIpParsePattern()
|
|
{
|
|
return '/^(' . preg_quote(static::NEGATION_CHAR, '/') . '?)(.+?)(\/(\d+))?$/';
|
|
}
|
|
|
|
/**
|
|
* Checks whether the IP is in subnet range.
|
|
*
|
|
* @param string $ip an IPv4 or IPv6 address
|
|
* @param int $cidr
|
|
* @param string $range subnet in CIDR format e.g. `10.0.0.0/8` or `2001:af::/64`
|
|
* @return bool
|
|
*/
|
|
private function inRange($ip, $cidr, $range)
|
|
{
|
|
return IpHelper::inRange($ip . '/' . $cidr, $range);
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function clientValidateAttribute($model, $attribute, $view)
|
|
{
|
|
ValidationAsset::register($view);
|
|
$options = $this->getClientOptions($model, $attribute);
|
|
|
|
return 'yii.validation.ip(value, messages, ' . Json::htmlEncode($options) . ');';
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function getClientOptions($model, $attribute)
|
|
{
|
|
$messages = [
|
|
'ipv6NotAllowed' => $this->ipv6NotAllowed,
|
|
'ipv4NotAllowed' => $this->ipv4NotAllowed,
|
|
'message' => $this->message,
|
|
'noSubnet' => $this->noSubnet,
|
|
'hasSubnet' => $this->hasSubnet,
|
|
];
|
|
foreach ($messages as &$message) {
|
|
$message = $this->formatMessage($message, [
|
|
'attribute' => $model->getAttributeLabel($attribute),
|
|
]);
|
|
}
|
|
|
|
$options = [
|
|
'ipv4Pattern' => new JsExpression(Html::escapeJsRegularExpression($this->ipv4Pattern)),
|
|
'ipv6Pattern' => new JsExpression(Html::escapeJsRegularExpression($this->ipv6Pattern)),
|
|
'messages' => $messages,
|
|
'ipv4' => (bool) $this->ipv4,
|
|
'ipv6' => (bool) $this->ipv6,
|
|
'ipParsePattern' => new JsExpression(Html::escapeJsRegularExpression($this->getIpParsePattern())),
|
|
'negation' => $this->negation,
|
|
'subnet' => $this->subnet,
|
|
];
|
|
if ($this->skipOnEmpty) {
|
|
$options['skipOnEmpty'] = 1;
|
|
}
|
|
|
|
return $options;
|
|
}
|
|
}
|