[github/wallabag/wallabag.git] / inc / 3rdparty / libraries / simplepie / library / SimplePie / Locator.php

<?php
/**
 * SimplePie
 *
 * A PHP-Based RSS and Atom Feed Framework.
 * Takes the hard work out of managing a complete RSS/Atom solution.
 *
 * Copyright (c) 2004-2012, Ryan Parman, Geoffrey 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
 * @version 1.3.1
 * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
 * @author Ryan Parman
 * @author Geoffrey 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;
	protected $registry;

	public function __construct(SimplePie_File $file, $timeout = 10, $useragent = null, $max_checked_feeds = 10)
	{
		$this->file = $file;
		$this->useragent = $useragent;
		$this->timeout = $timeout;
		$this->max_checked_feeds = $max_checked_feeds;

		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;
			}

			if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
			{
				return $working;
			}

			if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
			{
				return $working;
			}

			if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
			{
				return $working;
			}
		}
		return null;
	}

	public function is_feed($file)
	{
		if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
		{
			$sniffer = $this->registry->create('Content_Type_Sniffer', array($file));
			$sniffed = $sniffer->get_type();
			if (in_array($sniffed, array('application/rss+xml', 'application/rdf+xml', 'text/rdf', 'application/atom+xml', 'text/xml', 'application/xml')))
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		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);
		}
		else
		{
			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_seperated_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($link->getAttribute('type')))), array('application/rss+xml', 'application/atom+xml'))) && !isset($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, $this->useragent));
					if ($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))
					{
						$feeds[$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 ($parsed['scheme'] === '' || preg_match('/^(http(s)|feed)?$/i', $parsed['scheme']))
				{
					if ($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 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, $this->useragent));
				if ($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 $feed;
				}
				else
				{
					unset($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('/(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, $this->useragent));
				if ($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 $feed;
				}
				else
				{
					unset($array[$key]);
				}
			}
		}
		return null;
	}
}
Commit	Line	Data
ec397236 NL	1	<?php
	2	/**
	3	* SimplePie
	4	*
	5	* A PHP-Based RSS and Atom Feed Framework.
	6	* Takes the hard work out of managing a complete RSS/Atom solution.
	7	*
42c80841	8	* Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
ec397236 NL	9	* All rights reserved.
	10	*
	11	* Redistribution and use in source and binary forms, with or without modification, are
	12	* permitted provided that the following conditions are met:
	13	*
	14	* * Redistributions of source code must retain the above copyright notice, this list of
	15	* conditions and the following disclaimer.
	16	*
	17	* * Redistributions in binary form must reproduce the above copyright notice, this list
	18	* of conditions and the following disclaimer in the documentation and/or other materials
	19	* provided with the distribution.
	20	*
	21	* * Neither the name of the SimplePie Team nor the names of its contributors may be used
	22	* to endorse or promote products derived from this software without specific prior
	23	* written permission.
	24	*
	25	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
	26	* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	27	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
	28	* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	29	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	30	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	31	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	32	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	33	* POSSIBILITY OF SUCH DAMAGE.
	34	*
	35	* @package SimplePie
42c80841 NL	36	* @version 1.3.1
42c80841 NL	37	* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
ec397236 NL	38	* @author Ryan Parman
	39	* @author Geoffrey Sneddon
	40	* @author Ryan McCue
	41	* @link http://simplepie.org/ SimplePie
	42	* @license http://www.opensource.org/licenses/bsd-license.php BSD License
ec397236 NL	43	*/
ec397236 NL	44
42c80841 NL	45	/**
	46	* Used for feed auto-discovery
	47	*
	48	*
	49	* This class can be overloaded with {@see SimplePie::set_locator_class()}
	50	*
	51	* @package SimplePie
	52	*/
ec397236 NL	53	class SimplePie_Locator
	54	{
	55	var $useragent;
	56	var $timeout;
	57	var $file;
	58	var $local = array();
	59	var $elsewhere = array();
ec397236 NL	60	var $cached_entities = array();
	61	var $http_base;
	62	var $base;
	63	var $base_location = 0;
	64	var $checked_feeds = 0;
	65	var $max_checked_feeds = 10;
42c80841	66	protected $registry;
ec397236	67
42c80841	68	public function __construct(SimplePie_File $file, $timeout = 10, $useragent = null, $max_checked_feeds = 10)
ec397236	69	{
42c80841	70	$this->file = $file;
ec397236 NL	71	$this->useragent = $useragent;
	72	$this->timeout = $timeout;
	73	$this->max_checked_feeds = $max_checked_feeds;
42c80841 NL	74
	75	if (class_exists('DOMDocument'))
	76	{
	77	$this->dom = new DOMDocument();
	78
	79	set_error_handler(array('SimplePie_Misc', 'silence_errors'));
	80	$this->dom->loadHTML($this->file->body);
	81	restore_error_handler();
	82	}
	83	else
	84	{
	85	$this->dom = null;
	86	}
	87	}
	88
	89	public function set_registry(SimplePie_Registry $registry)
	90	{
	91	$this->registry = $registry;
ec397236 NL	92	}
	93
	94	public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
	95	{
	96	if ($this->is_feed($this->file))
	97	{
	98	return $this->file;
	99	}
	100
	101	if ($this->file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
	102	{
42c80841	103	$sniffer = $this->registry->create('Content_Type_Sniffer', array($this->file));
ec397236 NL	104	if ($sniffer->get_type() !== 'text/html')
	105	{
	106	return null;
	107	}
	108	}
	109
	110	if ($type & ~SIMPLEPIE_LOCATOR_NONE)
	111	{
	112	$this->get_base();
	113	}
	114
	115	if ($type & SIMPLEPIE_LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery())
	116	{
	117	return $working[0];
	118	}
	119
	120	if ($type & (SIMPLEPIE_LOCATOR_LOCAL_EXTENSION \| SIMPLEPIE_LOCATOR_LOCAL_BODY \| SIMPLEPIE_LOCATOR_REMOTE_EXTENSION \| SIMPLEPIE_LOCATOR_REMOTE_BODY) && $this->get_links())
	121	{
	122	if ($type & SIMPLEPIE_LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local))
	123	{
	124	return $working;
	125	}
	126
	127	if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
	128	{
	129	return $working;
	130	}
	131
	132	if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
	133	{
	134	return $working;
	135	}
	136
	137	if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
	138	{
	139	return $working;
	140	}
	141	}
	142	return null;
	143	}
	144
42c80841	145	public function is_feed($file)
ec397236 NL	146	{
	147	if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
	148	{
42c80841	149	$sniffer = $this->registry->create('Content_Type_Sniffer', array($file));
ec397236 NL	150	$sniffed = $sniffer->get_type();
	151	if (in_array($sniffed, array('application/rss+xml', 'application/rdf+xml', 'text/rdf', 'application/atom+xml', 'text/xml', 'application/xml')))
	152	{
	153	return true;
	154	}
	155	else
	156	{
	157	return false;
	158	}
	159	}
	160	elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL)
	161	{
	162	return true;
	163	}
	164	else
	165	{
	166	return false;
	167	}
	168	}
	169
	170	public function get_base()
	171	{
42c80841 NL	172	if ($this->dom === null)
	173	{
	174	throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
	175	}
ec397236 NL	176	$this->http_base = $this->file->url;
ec397236 NL	177	$this->base = $this->http_base;
42c80841	178	$elements = $this->dom->getElementsByTagName('base');
ec397236 NL	179	foreach ($elements as $element)
ec397236 NL	180	{
42c80841	181	if ($element->hasAttribute('href'))
ec397236	182	{
42c80841 NL	183	$base = $this->registry->call('Misc', 'absolutize_url', array(trim($element->getAttribute('href')), $this->http_base));
	184	if ($base === false)
	185	{
	186	continue;
	187	}
	188	$this->base = $base;
	189	$this->base_location = method_exists($element, 'getLineNo') ? $element->getLineNo() : 0;
ec397236 NL	190	break;
	191	}
	192	}
	193	}
	194
	195	public function autodiscovery()
	196	{
ec397236 NL	197	$done = array();
ec397236 NL	198	$feeds = array();
42c80841 NL	199	$feeds = array_merge($feeds, $this->search_elements_by_tag('link', $done, $feeds));
	200	$feeds = array_merge($feeds, $this->search_elements_by_tag('a', $done, $feeds));
	201	$feeds = array_merge($feeds, $this->search_elements_by_tag('area', $done, $feeds));
	202
	203	if (!empty($feeds))
	204	{
	205	return array_values($feeds);
	206	}
	207	else
	208	{
	209	return null;
	210	}
	211	}
	212
	213	protected function search_elements_by_tag($name, &$done, $feeds)
	214	{
	215	if ($this->dom === null)
	216	{
	217	throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
	218	}
	219
	220	$links = $this->dom->getElementsByTagName($name);
ec397236 NL	221	foreach ($links as $link)
	222	{
	223	if ($this->checked_feeds === $this->max_checked_feeds)
	224	{
	225	break;
	226	}
42c80841	227	if ($link->hasAttribute('href') && $link->hasAttribute('rel'))
ec397236	228	{
42c80841 NL	229	$rel = array_unique($this->registry->call('Misc', 'space_seperated_tokens', array(strtolower($link->getAttribute('rel')))));
42c80841 NL	230	$line = method_exists($link, 'getLineNo') ? $link->getLineNo() : 1;
ec397236	231
42c80841	232	if ($this->base_location < $line)
ec397236	233	{
42c80841	234	$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
ec397236 NL	235	}
	236	else
	237	{
42c80841 NL	238	$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->http_base));
	239	}
	240	if ($href === false)
	241	{
	242	continue;
ec397236 NL	243	}
ec397236 NL	244
42c80841	245	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($link->getAttribute('type')))), array('application/rss+xml', 'application/atom+xml'))) && !isset($feeds[$href]))
ec397236 NL	246	{
	247	$this->checked_feeds++;
	248	$headers = array(
	249	'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',
	250	);
42c80841	251	$feed = $this->registry->create('File', array($href, $this->timeout, 5, $headers, $this->useragent));
ec397236 NL	252	if ($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))
	253	{
	254	$feeds[$href] = $feed;
	255	}
	256	}
	257	$done[] = $href;
	258	}
	259	}
	260
42c80841	261	return $feeds;
ec397236 NL	262	}
	263
	264	public function get_links()
	265	{
42c80841 NL	266	if ($this->dom === null)
	267	{
	268	throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
	269	}
	270
	271	$links = $this->dom->getElementsByTagName('a');
ec397236 NL	272	foreach ($links as $link)
ec397236 NL	273	{
42c80841	274	if ($link->hasAttribute('href'))
ec397236	275	{
42c80841 NL	276	$href = trim($link->getAttribute('href'));
42c80841 NL	277	$parsed = $this->registry->call('Misc', 'parse_url', array($href));
ec397236 NL	278	if ($parsed['scheme'] === '' \|\| preg_match('/^(http(s)\|feed)?$/i', $parsed['scheme']))
ec397236 NL	279	{
42c80841	280	if ($this->base_location < $link->getLineNo())
ec397236	281	{
42c80841	282	$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
ec397236 NL	283	}
	284	else
	285	{
42c80841 NL	286	$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->http_base));
	287	}
	288	if ($href === false)
	289	{
	290	continue;
ec397236 NL	291	}
ec397236 NL	292
42c80841	293	$current = $this->registry->call('Misc', 'parse_url', array($this->file->url));
ec397236 NL	294
	295	if ($parsed['authority'] === '' \|\| $parsed['authority'] === $current['authority'])
	296	{
	297	$this->local[] = $href;
	298	}
	299	else
	300	{
	301	$this->elsewhere[] = $href;
	302	}
	303	}
	304	}
	305	}
	306	$this->local = array_unique($this->local);
	307	$this->elsewhere = array_unique($this->elsewhere);
	308	if (!empty($this->local) \|\| !empty($this->elsewhere))
	309	{
	310	return true;
	311	}
	312	return null;
	313	}
	314
	315	public function extension(&$array)
	316	{
	317	foreach ($array as $key => $value)
	318	{
	319	if ($this->checked_feeds === $this->max_checked_feeds)
	320	{
	321	break;
	322	}
	323	if (in_array(strtolower(strrchr($value, '.')), array('.rss', '.rdf', '.atom', '.xml')))
	324	{
	325	$this->checked_feeds++;
	326
	327	$headers = array(
	328	'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',
	329	);
42c80841	330	$feed = $this->registry->create('File', array($value, $this->timeout, 5, $headers, $this->useragent));
ec397236 NL	331	if ($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))
	332	{
	333	return $feed;
	334	}
	335	else
	336	{
	337	unset($array[$key]);
	338	}
	339	}
	340	}
	341	return null;
	342	}
	343
	344	public function body(&$array)
	345	{
	346	foreach ($array as $key => $value)
	347	{
	348	if ($this->checked_feeds === $this->max_checked_feeds)
	349	{
	350	break;
	351	}
	352	if (preg_match('/(rss\|rdf\|atom\|xml)/i', $value))
	353	{
	354	$this->checked_feeds++;
	355	$headers = array(
	356	'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',
	357	);
42c80841	358	$feed = $this->registry->create('File', array($value, $this->timeout, 5, null, $this->useragent));
ec397236 NL	359	if ($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))
	360	{
	361	return $feed;
	362	}
	363	else
	364	{
	365	unset($array[$key]);
	366	}
	367	}
	368	}
	369	return null;
	370	}
	371	}
	372