<?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, Sam 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, Sam Sneddon, Ryan McCue
* @author Ryan Parman
* @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, &$working = null)
< {
< if ($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;
}
}