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vendor
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aws
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aws-sdk-php
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src
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Credentials
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CredentialsUtils.php
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<?php namespace Aws\Credentials; final class CredentialsUtils { /** * Determines whether a given host * is a loopback address. * * @param $host * * @return bool */ public static function isLoopBackAddress($host): bool { if (!filter_var($host, FILTER_VALIDATE_IP)) { return false; } if (filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { if ($host === '::1') { return true; } return false; } $loopbackStart = ip2long('127.0.0.0'); $loopbackEnd = ip2long('127.255.255.255'); $ipLong = ip2long($host); return ($ipLong >= $loopbackStart && $ipLong <= $loopbackEnd); } }