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Content	-	Open
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Author.php	1.86 MB	View DL Edit
Cache.php	3.17 MB	View DL Edit
Caption.php	3.03 MB	View DL Edit
Category.php	2.41 MB	View DL Edit
Copyright.php	1.67 MB	View DL Edit
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Enclosure.php	31.39 MB	View DL Edit
Exception.php	355 B	View DL Edit
File.php	18.94 MB	View DL Edit
Gzdecode.php	8.31 MB	View DL Edit
IRI.php	33.99 MB	View DL Edit
Item.php	128.54 MB	View DL Edit
Locator.php	16.31 MB	View DL Edit
Misc.php	68.16 MB	View DL Edit
Parser.php	34.05 MB	View DL Edit
Rating.php	1.75 MB	View DL Edit
Registry.php	7.71 MB	View DL Edit
RegistryAware.php	447 B	View DL Edit
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Sanitize.php	29.64 MB	View DL Edit
SimplePie.php	125.05 MB	View DL Edit
Source.php	23.18 MB	View DL Edit

Edit file: /home/mhhtmff/www/site/wp-includes/SimplePie/src/Locator.php

<?php

// SPDX-FileCopyrightText: 2004-2023 Ryan Parman, Sam Sneddon, Ryan McCue
// SPDX-License-Identifier: BSD-3-Clause

declare(strict_types=1);

namespace SimplePie;

use DomDocument;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;
use Psr\Http\Message\UriFactoryInterface;
use SimplePie\HTTP\Client;
use SimplePie\HTTP\ClientException;
use SimplePie\HTTP\FileClient;
use SimplePie\HTTP\Psr18Client;
use SimplePie\HTTP\Response;

/**
 * Used for feed auto-discovery
 *
 *
 * This class can be overloaded with {@see \SimplePie\SimplePie::set_locator_class()}
 */
class Locator implements RegistryAware
{
    /** @var ?string */
    public $useragent = null;
    /** @var int */
    public $timeout = 10;
    /** @var File */
    public $file;
    /** @var string[] */
    public $local = [];
    /** @var string[] */
    public $elsewhere = [];
    /** @var array<mixed> */
    public $cached_entities = [];
    /** @var string */
    public $http_base;
    /** @var string */
    public $base;
    /** @var int */
    public $base_location = 0;
    /** @var int */
    public $checked_feeds = 0;
    /** @var int */
    public $max_checked_feeds = 10;
    /** @var bool */
    public $force_fsockopen = false;
    /** @var array<int, mixed> */
    public $curl_options = [];
    /** @var ?\DomDocument */
    public $dom;
    /** @var ?Registry */
    protected $registry;

/**
     * @var Client|null
     */
    private $http_client = null;

/**
     * @param array<int, mixed> $curl_options
     */
    public function __construct(File $file, int $timeout = 10, ?string $useragent = null, int $max_checked_feeds = 10, bool $force_fsockopen = false, array $curl_options = [])
    {
        $this->file = $file;
        $this->useragent = $useragent;
        $this->timeout = $timeout;
        $this->max_checked_feeds = $max_checked_feeds;
        $this->force_fsockopen = $force_fsockopen;
        $this->curl_options = $curl_options;

$body = $this->file->get_body_content();

if (class_exists('DOMDocument') && $body != '') {
            $this->dom = new \DOMDocument();

set_error_handler([Misc::class, 'silence_errors']);
            try {
                $this->dom->loadHTML($body);
            } catch (\Throwable $ex) {
                $this->dom = null;
            }
            restore_error_handler();
        } else {
            $this->dom = null;
        }
    }

/**
     * Set a PSR-18 client and PSR-17 factories
     *
     * Allows you to use your own HTTP client implementations.
     */
    final public function set_http_client(
        ClientInterface $http_client,
        RequestFactoryInterface $request_factory,
        UriFactoryInterface $uri_factory
    ): void {
        $this->http_client = new Psr18Client($http_client, $request_factory, $uri_factory);
    }

/**
     * @return void
     */
    public function set_registry(\SimplePie\Registry $registry)
    {
        $this->registry = $registry;
    }

/**
     * @param SimplePie::LOCATOR_* $type
     * @param array<Response>|null $working
     * @return Response|null
     */
    public function find(int $type = \SimplePie\SimplePie::LOCATOR_ALL, ?array &$working = null)
    {
        assert($this->registry !== null);

if ($this->is_feed($this->file)) {
            return $this->file;
        }

if (Misc::is_remote_uri($this->file->get_final_requested_uri())) {
            $sniffer = $this->registry->create(Content\Type\Sniffer::class, [$this->file]);
            if ($sniffer->get_type() !== 'text/html') {
                return null;
            }
        }

if ($type & ~\SimplePie\SimplePie::LOCATOR_NONE) {
            $this->get_base();
        }

if ($type & \SimplePie\SimplePie::LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery()) {
            return $working[0];
        }

if ($type & (\SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION | \SimplePie\SimplePie::LOCATOR_LOCAL_BODY | \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION | \SimplePie\SimplePie::LOCATOR_REMOTE_BODY) && $this->get_links()) {
            if ($type & \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local)) {
                return $working[0];
            }

if ($type & \SimplePie\SimplePie::LOCATOR_LOCAL_BODY && $working = $this->body($this->local)) {
                return $working[0];
            }

if ($type & \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere)) {
                return $working[0];
            }

if ($type & \SimplePie\SimplePie::LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere)) {
                return $working[0];
            }
        }
        return null;
    }

/**
     * @return bool
     */
    public function is_feed(Response $file, bool $check_html = false)
    {
        assert($this->registry !== null);

if (Misc::is_remote_uri($file->get_final_requested_uri())) {
            $sniffer = $this->registry->create(Content\Type\Sniffer::class, [$file]);
            $sniffed = $sniffer->get_type();
            $mime_types = ['application/rss+xml', 'application/rdf+xml',
                                'text/rdf', 'application/atom+xml', 'text/xml',
                                'application/xml', 'application/x-rss+xml'];
            if ($check_html) {
                $mime_types[] = 'text/html';
            }

return in_array($sniffed, $mime_types);
        } elseif (is_file($file->get_final_requested_uri())) {
            return true;
        } else {
            return false;
        }
    }

/**
     * @return void
     */
    public function get_base()
    {
        assert($this->registry !== null);

if ($this->dom === null) {
            throw new \SimplePie\Exception('DOMDocument not found, unable to use locator');
        }
        $this->http_base = $this->file->get_final_requested_uri();
        $this->base = $this->http_base;
        $elements = $this->dom->getElementsByTagName('base');
        foreach ($elements as $element) {
            if ($element->hasAttribute('href')) {
                $base = $this->registry->call(Misc::class, 'absolutize_url', [trim($element->getAttribute('href')), $this->http_base]);
                if ($base === false) {
                    continue;
                }
                $this->base = $base;
                $this->base_location = method_exists($element, 'getLineNo') ? $element->getLineNo() : 0;
                break;
            }
        }
    }

/**
     * @return array<Response>|null
     */
    public function autodiscovery()
    {
        $done = [];
        $feeds = [];
        $feeds = array_merge($feeds, $this->search_elements_by_tag('link', $done, $feeds));
        $feeds = array_merge($feeds, $this->search_elements_by_tag('a', $done, $feeds));
        $feeds = array_merge($feeds, $this->search_elements_by_tag('area', $done, $feeds));

if (!empty($feeds)) {
            return array_values($feeds);
        }

return null;
    }

/**
     * @param string[] $done
     * @param array<string, Response> $feeds
     * @return array<string, Response>
     */
    protected function search_elements_by_tag(string $name, array &$done, array $feeds)
    {
        assert($this->registry !== null);

if ($this->dom === null) {
            throw new \SimplePie\Exception('DOMDocument not found, unable to use locator');
        }

$links = $this->dom->getElementsByTagName($name);
        foreach ($links as $link) {
            if ($this->checked_feeds === $this->max_checked_feeds) {
                break;
            }
            if ($link->hasAttribute('href') && $link->hasAttribute('rel')) {
                $rel = array_unique($this->registry->call(Misc::class, 'space_separated_tokens', [strtolower($link->getAttribute('rel'))]));
                $line = method_exists($link, 'getLineNo') ? $link->getLineNo() : 1;

if ($this->base_location < $line) {
                    $href = $this->registry->call(Misc::class, 'absolutize_url', [trim($link->getAttribute('href')), $this->base]);
                } else {
                    $href = $this->registry->call(Misc::class, 'absolutize_url', [trim($link->getAttribute('href')), $this->http_base]);
                }
                if ($href === false) {
                    continue;
                }

if (!in_array($href, $done) && in_array('feed', $rel) || (in_array('alternate', $rel) && !in_array('stylesheet', $rel) && $link->hasAttribute('type') && in_array(strtolower($this->registry->call(Misc::class, 'parse_mime', [$link->getAttribute('type')])), ['text/html', 'application/rss+xml', 'application/atom+xml'])) && !isset($feeds[$href])) {
                    $this->checked_feeds++;
                    $headers = [
                        'Accept' => SimplePie::DEFAULT_HTTP_ACCEPT_HEADER,
                    ];

try {
                        $feed = $this->get_http_client()->request(Client::METHOD_GET, $href, $headers);

if ((!Misc::is_remote_uri($feed->get_final_requested_uri()) || ($feed->get_status_code() === 200 || $feed->get_status_code() > 206 && $feed->get_status_code() < 300)) && $this->is_feed($feed, true)) {
                            $feeds[$href] = $feed;
                        }
                    } catch (ClientException $th) {
                        // Just mark it as done and continue.
                    }
                }
                $done[] = $href;
            }
        }

return $feeds;
    }

/**
     * @return true|null
     */
    public function get_links()
    {
        assert($this->registry !== null);

if ($this->dom === null) {
            throw new \SimplePie\Exception('DOMDocument not found, unable to use locator');
        }

$links = $this->dom->getElementsByTagName('a');
        foreach ($links as $link) {
            if ($link->hasAttribute('href')) {
                $href = trim($link->getAttribute('href'));
                $parsed = $this->registry->call(Misc::class, 'parse_url', [$href]);
                if ($parsed['scheme'] === '' || preg_match('/^(https?|feed)?$/i', $parsed['scheme'])) {
                    if (method_exists($link, 'getLineNo') && $this->base_location < $link->getLineNo()) {
                        $href = $this->registry->call(Misc::class, 'absolutize_url', [trim($link->getAttribute('href')), $this->base]);
                    } else {
                        $href = $this->registry->call(Misc::class, 'absolutize_url', [trim($link->getAttribute('href')), $this->http_base]);
                    }
                    if ($href === false) {
                        continue;
                    }

$current = $this->registry->call(Misc::class, 'parse_url', [$this->file->get_final_requested_uri()]);

if ($parsed['authority'] === '' || $parsed['authority'] === $current['authority']) {
                        $this->local[] = $href;
                    } else {
                        $this->elsewhere[] = $href;
                    }
                }
            }
        }
        $this->local = array_unique($this->local);
        $this->elsewhere = array_unique($this->elsewhere);
        if (!empty($this->local) || !empty($this->elsewhere)) {
            return true;
        }
        return null;
    }

/**
     * Extracts first `link` element with given `rel` attribute inside the `head` element.
     *
     * @return string|null
     */
    public function get_rel_link(string $rel)
    {
        assert($this->registry !== null);

if ($this->dom === null) {
            throw new \SimplePie\Exception('DOMDocument not found, unable to use '.
                                          'locator');
        }
        if (!class_exists('DOMXpath')) {
            throw new \SimplePie\Exception('DOMXpath not found, unable to use '.
                                          'get_rel_link');
        }

$xpath = new \DOMXpath($this->dom);
        $query = '(//head)[1]/link[@rel and @href]';
        /** @var \DOMNodeList<\DOMElement> */
        $queryResult = $xpath->query($query);
        foreach ($queryResult as $link) {
            $href = trim($link->getAttribute('href'));
            $parsed = $this->registry->call(Misc::class, 'parse_url', [$href]);
            if ($parsed['scheme'] === '' ||
                preg_match('/^https?$/i', $parsed['scheme'])) {
                if (method_exists($link, 'getLineNo') &&
                    $this->base_location < $link->getLineNo()) {
                    $href = $this->registry->call(
                        Misc::class,
                        'absolutize_url',
                        [trim($link->getAttribute('href')), $this->base]
                    );
                } else {
                    $href = $this->registry->call(
                        Misc::class,
                        'absolutize_url',
                        [trim($link->getAttribute('href')), $this->http_base]
                    );
                }
                if ($href === false) {
                    return null;
                }
                $rel_values = explode(' ', strtolower($link->getAttribute('rel')));
                if (in_array($rel, $rel_values)) {
                    return $href;
                }
            }
        }

return null;
    }

/**
     * @param string[] $array
     * @return array<Response>|null
     */
    public function extension(array &$array)
    {
        foreach ($array as $key => $value) {
            if ($this->checked_feeds === $this->max_checked_feeds) {
                break;
            }
            $extension = strrchr($value, '.');
            if ($extension !== false && in_array(strtolower($extension), ['.rss', '.rdf', '.atom', '.xml'])) {
                $this->checked_feeds++;

$headers = [
                    'Accept' => SimplePie::DEFAULT_HTTP_ACCEPT_HEADER,
                ];

try {
                    $feed = $this->get_http_client()->request(Client::METHOD_GET, $value, $headers);

if ((!Misc::is_remote_uri($feed->get_final_requested_uri()) || ($feed->get_status_code() === 200 || $feed->get_status_code() > 206 && $feed->get_status_code() < 300)) && $this->is_feed($feed)) {
                        return [$feed];
                    }
                } catch (ClientException $th) {
                    // Just unset and continue.
                }

unset($array[$key]);
            }
        }
        return null;
    }

/**
     * @param string[] $array
     * @return array<Response>|null
     */
    public function body(array &$array)
    {
        foreach ($array as $key => $value) {
            if ($this->checked_feeds === $this->max_checked_feeds) {
                break;
            }
            if (preg_match('/(feed|rss|rdf|atom|xml)/i', $value)) {
                $this->checked_feeds++;
                $headers = [
                    'Accept' => SimplePie::DEFAULT_HTTP_ACCEPT_HEADER,
                ];

try {
                    $feed = $this->get_http_client()->request(Client::METHOD_GET, $value, $headers);

if ((!Misc::is_remote_uri($feed->get_final_requested_uri()) || ($feed->get_status_code() === 200 || $feed->get_status_code() > 206 && $feed->get_status_code() < 300)) && $this->is_feed($feed)) {
                        return [$feed];
                    }
                } catch (ClientException $th) {
                    // Just unset and continue.
                }

unset($array[$key]);
            }
        }
        return null;
    }

/**
     * Get a HTTP client
     */
    private function get_http_client(): Client
    {
        assert($this->registry !== null);

if ($this->http_client === null) {
            $options = [
                'timeout' => $this->timeout,
                'redirects' => 5,
                'force_fsockopen' => $this->force_fsockopen,
                'curl_options' => $this->curl_options,
            ];

if ($this->useragent !== null) {
                $options['useragent'] = $this->useragent;
            }

return new FileClient(
                $this->registry,
                $options
            );
        }

return $this->http_client;
    }
}

class_alias('SimplePie\Locator', 'SimplePie_Locator', false);

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