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?? Config.php(5.32 KB)
?? HostsFile.php(4.68 KB)

Editing: HostsFile.php

<?php

namespace RectorPrefix202411\React\Dns\Config;

use RuntimeException;
/**
 * Represents a static hosts file which maps hostnames to IPs
 *
 * Hosts files are used on most systems to avoid actually hitting the DNS for
 * certain common hostnames.
 *
 * Most notably, this file usually contains an entry to map "localhost" to the
 * local IP. Windows is a notable exception here, as Windows does not actually
 * include "localhost" in this file by default. To compensate for this, this
 * class may explicitly be wrapped in another HostsFile instance which
 * hard-codes these entries for Windows (see also Factory).
 *
 * This class mostly exists to abstract the parsing/extraction process so this
 * can be replaced with a faster alternative in the future.
 */
class HostsFile
{
    /**
     * Returns the default path for the hosts file on this system
     *
     * @return string
     * @codeCoverageIgnore
     */
    public static function getDefaultPath()
    {
        // use static path for all Unix-based systems
        if (\DIRECTORY_SEPARATOR !== '\\') {
            return '/etc/hosts';
        }
        // Windows actually stores the path in the registry under
        // \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DataBasePath
        $path = '%SystemRoot%\\system32\\drivers\\etc\\hosts';
        $base = \getenv('SystemRoot');
        if ($base === \false) {
            $base = 'C:\\Windows';
        }
        return \str_replace('%SystemRoot%', $base, $path);
    }
    /**
     * Loads a hosts file (from the given path or default location)
     *
     * Note that this method blocks while loading the given path and should
     * thus be used with care! While this should be relatively fast for normal
     * hosts file, this may be an issue if this file is located on a slow device
     * or contains an excessive number of entries. In particular, this method
     * should only be executed before the loop starts, not while it is running.
     *
     * @param ?string $path (optional) path to hosts file or null=load default location
     * @return self
     * @throws RuntimeException if the path can not be loaded (does not exist)
     */
    public static function loadFromPathBlocking($path = null)
    {
        if ($path === null) {
            $path = self::getDefaultPath();
        }
        $contents = @\file_get_contents($path);
        if ($contents === \false) {
            throw new RuntimeException('Unable to load hosts file "' . $path . '"');
        }
        return new self($contents);
    }
    private $contents;
    /**
     * Instantiate new hosts file with the given hosts file contents
     *
     * @param string $contents
     */
    public function __construct($contents)
    {
        // remove all comments from the contents
        $contents = \preg_replace('/[ \\t]*#.*/', '', \strtolower($contents));
        $this->contents = $contents;
    }
    /**
     * Returns all IPs for the given hostname
     *
     * @param string $name
     * @return string[]
     */
    public function getIpsForHost($name)
    {
        $name = \strtolower($name);
        $ips = array();
        foreach (\preg_split('/\\r?\\n/', $this->contents) as $line) {
            $parts = \preg_split('/\\s+/', $line);
            $ip = \array_shift($parts);
            if ($parts && \array_search($name, $parts) !== \false) {
                // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
                if (\strpos($ip, ':') !== \false && ($pos = \strpos($ip, '%')) !== \false) {
                    $ip = \substr($ip, 0, $pos);
                }
                if (@\inet_pton($ip) !== \false) {
                    $ips[] = $ip;
                }
            }
        }
        return $ips;
    }
    /**
     * Returns all hostnames for the given IPv4 or IPv6 address
     *
     * @param string $ip
     * @return string[]
     */
    public function getHostsForIp($ip)
    {
        // check binary representation of IP to avoid string case and short notation
        $ip = @\inet_pton($ip);
        if ($ip === \false) {
            return array();
        }
        $names = array();
        foreach (\preg_split('/\\r?\\n/', $this->contents) as $line) {
            $parts = \preg_split('/\\s+/', $line, -1, \PREG_SPLIT_NO_EMPTY);
            $addr = (string) \array_shift($parts);
            // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
            if (\strpos($addr, ':') !== \false && ($pos = \strpos($addr, '%')) !== \false) {
                $addr = \substr($addr, 0, $pos);
            }
            if (@\inet_pton($addr) === $ip) {
                foreach ($parts as $part) {
                    $names[] = $part;
                }
            }
        }
        return $names;
    }
}

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