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41cc1b08
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Assos Assos
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<?php
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class SimplePie_Locator
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{
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var $useragent;
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var $timeout;
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var $file;
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var $local = array();
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var $elsewhere = array();
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var $cached_entities = array();
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var $http_base;
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var $base;
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var $base_location = 0;
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var $checked_feeds = 0;
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var $max_checked_feeds = 10;
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protected $registry;
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public function __construct(SimplePie_File $file, $timeout = 10, $useragent = null, $max_checked_feeds = 10)
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{
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$this->file = $file;
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$this->useragent = $useragent;
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$this->timeout = $timeout;
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$this->max_checked_feeds = $max_checked_feeds;
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if (class_exists('DOMDocument'))
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{
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$this->dom = new DOMDocument();
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set_error_handler(array('SimplePie_Misc', 'silence_errors'));
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$this->dom->loadHTML($this->file->body);
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restore_error_handler();
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}
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else
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{
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$this->dom = null;
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}
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}
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public function set_registry(SimplePie_Registry $registry)
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{
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$this->registry = $registry;
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}
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public function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
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{
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if ($this->is_feed($this->file))
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{
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return $this->file;
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}
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if ($this->file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
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{
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$sniffer = $this->registry->create('Content_Type_Sniffer', array($this->file));
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if ($sniffer->get_type() !== 'text/html')
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{
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return null;
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}
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}
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if ($type & ~SIMPLEPIE_LOCATOR_NONE)
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{
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$this->get_base();
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}
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if ($type & SIMPLEPIE_LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery())
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{
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return $working[0];
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}
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if ($type & (SIMPLEPIE_LOCATOR_LOCAL_EXTENSION | SIMPLEPIE_LOCATOR_LOCAL_BODY | SIMPLEPIE_LOCATOR_REMOTE_EXTENSION | SIMPLEPIE_LOCATOR_REMOTE_BODY) && $this->get_links())
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{
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if ($type & SIMPLEPIE_LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local))
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{
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return $working;
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}
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if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
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{
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return $working;
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}
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if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
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{
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return $working;
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}
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if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
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{
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return $working;
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}
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}
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return null;
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}
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public function is_feed($file)
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{
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if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
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{
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$sniffer = $this->registry->create('Content_Type_Sniffer', array($file));
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$sniffed = $sniffer->get_type();
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if (in_array($sniffed, array('application/rss+xml', 'application/rdf+xml', 'text/rdf', 'application/atom+xml', 'text/xml', 'application/xml')))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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public function get_base()
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{
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if ($this->dom === null)
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{
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throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
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}
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$this->http_base = $this->file->url;
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$this->base = $this->http_base;
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$elements = $this->dom->getElementsByTagName('base');
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foreach ($elements as $element)
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{
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if ($element->hasAttribute('href'))
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{
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$base = $this->registry->call('Misc', 'absolutize_url', array(trim($element->getAttribute('href')), $this->http_base));
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if ($base === false)
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{
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continue;
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}
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$this->base = $base;
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$this->base_location = method_exists($element, 'getLineNo') ? $element->getLineNo() : 0;
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break;
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}
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}
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}
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public function autodiscovery()
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{
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$done = array();
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$feeds = array();
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$feeds = array_merge($feeds, $this->search_elements_by_tag('link', $done, $feeds));
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$feeds = array_merge($feeds, $this->search_elements_by_tag('a', $done, $feeds));
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$feeds = array_merge($feeds, $this->search_elements_by_tag('area', $done, $feeds));
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if (!empty($feeds))
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{
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return array_values($feeds);
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}
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else
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{
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return null;
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}
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}
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protected function search_elements_by_tag($name, &$done, $feeds)
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{
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if ($this->dom === null)
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{
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throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
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}
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$links = $this->dom->getElementsByTagName($name);
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foreach ($links as $link)
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{
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if ($this->checked_feeds === $this->max_checked_feeds)
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{
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break;
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}
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if ($link->hasAttribute('href') && $link->hasAttribute('rel'))
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{
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$rel = array_unique($this->registry->call('Misc', 'space_seperated_tokens', array(strtolower($link->getAttribute('rel')))));
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$line = method_exists($link, 'getLineNo') ? $link->getLineNo() : 1;
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if ($this->base_location < $line)
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{
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$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
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}
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else
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{
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$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->http_base));
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}
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if ($href === false)
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{
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continue;
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}
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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[$href]))
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{
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$this->checked_feeds++;
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$headers = array(
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'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
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);
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$feed = $this->registry->create('File', array($href, $this->timeout, 5, $headers, $this->useragent));
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if ($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))
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{
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$feeds[$href] = $feed;
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}
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}
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$done[] = $href;
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}
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259 |
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}
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260 |
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261 |
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return $feeds;
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}
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263 |
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264 |
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public function get_links()
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265 |
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{
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266 |
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if ($this->dom === null)
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267 |
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{
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268 |
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throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
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269 |
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}
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270 |
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271 |
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$links = $this->dom->getElementsByTagName('a');
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272 |
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foreach ($links as $link)
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273 |
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{
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274 |
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if ($link->hasAttribute('href'))
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275 |
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{
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276 |
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$href = trim($link->getAttribute('href'));
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277 |
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$parsed = $this->registry->call('Misc', 'parse_url', array($href));
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278 |
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if ($parsed['scheme'] === '' || preg_match('/^(http(s)|feed)?$/i', $parsed['scheme']))
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279 |
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{
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280 |
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if ($this->base_location < $link->getLineNo())
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281 |
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{
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282 |
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$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->base));
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283 |
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}
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284 |
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else
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285 |
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{
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286 |
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$href = $this->registry->call('Misc', 'absolutize_url', array(trim($link->getAttribute('href')), $this->http_base));
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287 |
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}
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288 |
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if ($href === false)
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289 |
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{
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290 |
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continue;
|
291 |
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}
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292 |
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293 |
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$current = $this->registry->call('Misc', 'parse_url', array($this->file->url));
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294 |
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295 |
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if ($parsed['authority'] === '' || $parsed['authority'] === $current['authority'])
|
296 |
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{
|
297 |
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$this->local[] = $href;
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298 |
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}
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299 |
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else
|
300 |
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{
|
301 |
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$this->elsewhere[] = $href;
|
302 |
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}
|
303 |
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}
|
304 |
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}
|
305 |
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}
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306 |
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$this->local = array_unique($this->local);
|
307 |
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$this->elsewhere = array_unique($this->elsewhere);
|
308 |
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if (!empty($this->local) || !empty($this->elsewhere))
|
309 |
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{
|
310 |
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return true;
|
311 |
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}
|
312 |
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return null;
|
313 |
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}
|
314 |
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315 |
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public function extension(&$array)
|
316 |
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{
|
317 |
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foreach ($array as $key => $value)
|
318 |
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{
|
319 |
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if ($this->checked_feeds === $this->max_checked_feeds)
|
320 |
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{
|
321 |
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break;
|
322 |
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}
|
323 |
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if (in_array(strtolower(strrchr($value, '.')), array('.rss', '.rdf', '.atom', '.xml')))
|
324 |
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{
|
325 |
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$this->checked_feeds++;
|
326 |
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|
327 |
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$headers = array(
|
328 |
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'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',
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329 |
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);
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330 |
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$feed = $this->registry->create('File', array($value, $this->timeout, 5, $headers, $this->useragent));
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331 |
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if ($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 |
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{
|
333 |
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return $feed;
|
334 |
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}
|
335 |
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else
|
336 |
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{
|
337 |
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unset($array[$key]);
|
338 |
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}
|
339 |
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}
|
340 |
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}
|
341 |
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return null;
|
342 |
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}
|
343 |
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|
344 |
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public function body(&$array)
|
345 |
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{
|
346 |
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foreach ($array as $key => $value)
|
347 |
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{
|
348 |
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if ($this->checked_feeds === $this->max_checked_feeds)
|
349 |
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{
|
350 |
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break;
|
351 |
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}
|
352 |
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if (preg_match('/(rss|rdf|atom|xml)/i', $value))
|
353 |
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{
|
354 |
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$this->checked_feeds++;
|
355 |
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$headers = array(
|
356 |
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'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
|
357 |
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);
|
358 |
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$feed = $this->registry->create('File', array($value, $this->timeout, 5, null, $this->useragent));
|
359 |
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if ($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 |
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{
|
361 |
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return $feed;
|
362 |
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}
|
363 |
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else
|
364 |
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{
|
365 |
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unset($array[$key]);
|
366 |
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}
|
367 |
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}
|
368 |
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}
|
369 |
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return null;
|
370 |
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}
|
371 |
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}
|