50 lines
1.5 KiB
PHP
50 lines
1.5 KiB
PHP
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<?php
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namespace Pterodactyl\Rules;
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use Illuminate\Contracts\Validation\Rule;
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class ResolvesToIPAddress implements Rule
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{
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/**
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* Validate that a given string can correctly resolve to a valid IPv4 address.
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*
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* @param string $attribute
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* @param mixed $value
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* @return bool
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*/
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public function passes($attribute, $value): bool
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{
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// inet_pton returns false if the value passed through is not a valid IP address, so we'll just
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// use that a nice ugly PHP hack to determine if we should pass this off to the gethostbyname
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// call below.
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$isIP = inet_pton($attribute) !== false;
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// If the value received is not an IP address try to look it up using the gethostbyname() call.
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// If that returns the same value that we passed in then it means it did not resolve to anything
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// and we should fail this validation call.
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return $isIP || gethostbyname($value) !== $value;
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}
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/**
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* Return a validation message for use when this rule fails.
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*
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* @return string
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*/
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public function message(): string
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{
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return 'The :attribute must be a valid IPv4 address or hostname that resolves to a valid IPv4 address.';
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}
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/**
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* Convert the rule to a validation string. This is necessary to avoid
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* issues with Eloquence which tries to use this rule as a string.
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*
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* @return string
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*/
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public function __toString()
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{
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return 'p_resolves_to_ip_address';
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}
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}
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