<?php

> 
/**
> declare(strict_types=1);


 * SimplePie
 *
 * A PHP-Based RSS and Atom Feed Framework.
 * Takes the hard work out of managing a complete RSS/Atom solution.
 *

<  * Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors



>  * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors


 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 	* Redistributions of source code must retain the above copyright notice, this list of
 * 	  conditions and the following disclaimer.
 *
 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
 * 	  of conditions and the following disclaimer in the documentation and/or other materials
 * 	  provided with the distribution.
 *
 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
 * 	  to endorse or promote products derived from this software without specific prior
 * 	  written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package SimplePie

<  * @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue



>  * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue


 * @author Ryan Parman

<  * @author Geoffrey Sneddon



>  * @author Sam Sneddon


 * @author Ryan McCue
 * @link http://simplepie.org/ SimplePie
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 */


< /**
<  * Used for feed auto-discovery
<  *
<  *
<  * This class can be overloaded with {@see SimplePie::set_locator_class()}
<  *
<  * @package SimplePie
<  */
< class SimplePie_Locator
< {
< 	var $useragent;
< 	var $timeout;
< 	var $file;
< 	var $local = array();
< 	var $elsewhere = array();
< 	var $cached_entities = array();
< 	var $http_base;
< 	var $base;
< 	var $base_location = 0;
< 	var $checked_feeds = 0;
< 	var $max_checked_feeds = 10;
< 	var $force_fsockopen = false;
< 	var $curl_options = array();
< 	protected $registry;
< 
< 	public function __construct(SimplePie_File $file, $timeout = 10, $useragent = null, $max_checked_feeds = 10, $force_fsockopen = false, $curl_options = array())
< 	{
< 		$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;
< 
< 		if (class_exists('DOMDocument'))
< 		{
< 			$this->dom = new DOMDocument();
< 
< 			set_error_handler(array('SimplePie_Misc', 'silence_errors'));
< 			$this->dom->loadHTML($this->file->body);
< 			restore_error_handler();
< 		}
< 		else
< 		{
< 			$this->dom = null;
< 		}
< 	}
< 
< 	public function set_registry(SimplePie_Registry $registry)
< 	{
< 		$this->registry = $registry;
< 	}
< 
< 	public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
< 	{
< 		if ($this->is_feed($this->file))
< 		{
< 			return $this->file;
< 		}
< 
< 		if ($this->file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
< 		{
< 			$sniffer = $this->registry->create('Content_Type_Sniffer', array($this->file));
< 			if ($sniffer->get_type() !== 'text/html')
< 			{
< 				return null;
< 			}
< 		}
< 
< 		if ($type & ~SIMPLEPIE_LOCATOR_NONE)
< 		{
< 			$this->get_base();
< 		}
< 
< 		if ($type & SIMPLEPIE_LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery())
< 		{
< 			return $working[0];
< 		}
< 
< 		if ($type & (SIMPLEPIE_LOCATOR_LOCAL_EXTENSION | SIMPLEPIE_LOCATOR_LOCAL_BODY | SIMPLEPIE_LOCATOR_REMOTE_EXTENSION | SIMPLEPIE_LOCATOR_REMOTE_BODY) && $this->get_links())
< 		{
< 			if ($type & SIMPLEPIE_LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local))
< 			{
< 				return $working[0];
< 			}



> use SimplePie\Locator;




< 			if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
< 			{
< 				return $working[0];
< 			}
< 
< 			if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
< 			{
< 				return $working[0];
< 			}



> class_exists('SimplePie\Locator');




< 			if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
< 			{
< 				return $working[0];
< 			}
< 		}
< 		return null;
< 	}
< 
< 	public function is_feed($file, $check_html = false)
< 	{
< 		if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
< 		{
< 			$sniffer = $this->registry->create('Content_Type_Sniffer', array($file));
< 			$sniffed = $sniffer->get_type();
< 			$mime_types = array('application/rss+xml', 'application/rdf+xml',
< 			                    'text/rdf', 'application/atom+xml', 'text/xml',
< 			                    'application/xml', 'application/x-rss+xml');
< 			if ($check_html)
< 			{
< 				$mime_types[] = 'text/html';
< 			}
< 
< 			return in_array($sniffed, $mime_types);
< 		}
< 		elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL)
< 		{
< 			return true;
< 		}
< 		else
< 		{
< 			return false;
< 		}
< 	}
< 
< 	public function get_base()
< 	{
< 		if ($this->dom === null)
< 		{
< 			throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
< 		}
< 		$this->http_base = $this->file->url;
< 		$this->base = $this->http_base;
< 		$elements = $this->dom->getElementsByTagName('base');
< 		foreach ($elements as $element)
< 		{
< 			if ($element->hasAttribute('href'))
< 			{
< 				$base = $this->registry->call('Misc', 'absolutize_url', array(trim($element->getAttribute('href')), $this->http_base));
< 				if ($base === false)
< 				{
< 					continue;
< 				}
< 				$this->base = $base;
< 				$this->base_location = method_exists($element, 'getLineNo') ? $element->getLineNo() : 0;
< 				break;
< 			}
< 		}
< 	}
< 
< 	public function autodiscovery()
< 	{
< 		$done = array();
< 		$feeds = array();
< 		$feeds = array_merge($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($feeds);
< 		}
< 
< 		return null;
< 	}
< 
< 	protected function search_elements_by_tag($name, &$done, $feeds)
< 	{
< 		if ($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', 'space_separated_tokens', array(strtolower($link->getAttribute('rel')))));
< 				$line = method_exists($link, 'getLineNo') ? $link->getLineNo() : 1;



> // @trigger_error(sprintf('Using the "SimplePie_Locator" class is deprecated since SimplePie 1.7.0, use "SimplePie\Locator" instead.'), \E_USER_DEPRECATED);




< 				if ($this->base_location < $line)



> if (\false) {
>     /** @deprecated since SimplePie 1.7.0, use "SimplePie\Locator" instead */
>     class SimplePie_Locator extends Locator


				{

< 					$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
< 				}
< 				else
< 				{
< 					$href = $this->registry->call('Misc', 'absolutize_url', array(trim($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', 'parse_mime', array($link->getAttribute('type')))), array('text/html', 'application/rss+xml', 'application/atom+xml'))) && !isset($feeds[$href]))
< 				{
< 					$this->checked_feeds++;
< 					$headers = array(
< 						'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
< 					);
< 					$feed = $this->registry->create('File', array($href, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options));
< 					if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed, true))
< 					{
< 						$feeds[$href] = $feed;
< 					}
< 				}
< 				$done[] = $href;
< 			}
< 		}
< 
< 		return $feeds;
< 	}
< 
< 	public function get_links()
< 	{
< 		if ($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 = $this->registry->call('Misc', 'parse_url', array($href));
< 				if ($parsed['scheme'] === '' || preg_match('/^(https?|feed)?$/i', $parsed['scheme']))
< 				{
< 					if (method_exists($link, 'getLineNo') && $this->base_location < $link->getLineNo())
< 					{
< 						$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
< 					}
< 					else
< 					{
< 						$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->http_base));
< 					}
< 					if ($href === false)
< 					{
< 						continue;
< 					}
< 
< 					$current = $this->registry->call('Misc', 'parse_url', array($this->file->url));
< 
< 					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;
< 	}
< 
< 	public function get_rel_link($rel)
< 	{
< 		if ($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);
< 		$query = '//a[@rel and @href] | //link[@rel and @href]';
< 		foreach ($xpath->query($query) as $link)
< 		{
< 			$href = trim($link->getAttribute('href'));
< 			$parsed = $this->registry->call('Misc', 'parse_url', array($href));
< 			if ($parsed['scheme'] === '' ||
< 			    preg_match('/^https?$/i', $parsed['scheme']))
< 			{
< 				if (method_exists($link, 'getLineNo') &&
< 				    $this->base_location < $link->getLineNo())
< 				{
< 					$href =
< 						$this->registry->call('Misc', 'absolutize_url',
< 						                      array(trim($link->getAttribute('href')),
< 						                            $this->base));
< 				}
< 				else
< 				{
< 					$href =
< 						$this->registry->call('Misc', 'absolutize_url',
< 						                      array(trim($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 $href;
< 				}
< 			}
< 		}
< 		return null;
< 	}
< 
< 	public function extension(&$array)
< 	{
< 		foreach ($array as $key => $value)
< 		{
< 			if ($this->checked_feeds === $this->max_checked_feeds)
< 			{
< 				break;
< 			}
< 			if (in_array(strtolower(strrchr($value, '.')), array('.rss', '.rdf', '.atom', '.xml')))
< 			{
< 				$this->checked_feeds++;
< 
< 				$headers = array(
< 					'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
< 				);
< 				$feed = $this->registry->create('File', array($value, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options));
< 				if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
< 				{
< 					return array($feed);
< 				}
< 				else
< 				{
< 					unset($array[$key]);
< 				}
< 			}
< 		}
< 		return null;
< 	}
< 
< 	public function body(&$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 = array(
< 					'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
< 				);
< 				$feed = $this->registry->create('File', array($value, $this->timeout, 5, null, $this->useragent, $this->force_fsockopen, $this->curl_options));
< 				if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
< 				{
< 					return array($feed);
< 				}
< 				else
< 				{
< 					unset($array[$key]);
< 				}
< 			}
< 		}
< 		return null;


	}
}