You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
433 lines
13 KiB
433 lines
13 KiB
9 months ago
|
<?php
|
||
|
|
/**
|
||
|
|
* 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
|
||
|
|
* 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();
|
||
|
|
var $dom;
|
||
|
|
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->file->body != '')
|
||
|
|
{
|
||
|
|
$this->dom = new DOMDocument();
|
||
|
|
|
||
|
|
set_error_handler(array('SimplePie_Misc', 'silence_errors'));
|
||
|
|
try
|
||
|
|
{
|
||
|
|
$this->dom->loadHTML($this->file->body);
|
||
|
|
}
|
||
|
|
catch (Throwable $ex)
|
||
|
|
{
|
||
|
|
$this->dom = null;
|
||
|
|
}
|
||
|
|
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 $working[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($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 $working[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($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') ? $link->getLineNo() : 1;
|
||
|
|
|
||
|
|
if ($this->base_location < $line)
|
||
|
|
{
|
||
|
|
$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;
|
||
|
|
}
|
||
|
|
}
|