diff options
Diffstat (limited to 'vendor/simplepie/simplepie/library/SimplePie/Locator.php')
-rw-r--r-- | vendor/simplepie/simplepie/library/SimplePie/Locator.php | 397 |
1 files changed, 388 insertions, 9 deletions
diff --git a/vendor/simplepie/simplepie/library/SimplePie/Locator.php b/vendor/simplepie/simplepie/library/SimplePie/Locator.php index 4d1c0fe87..12961dd3d 100644 --- a/vendor/simplepie/simplepie/library/SimplePie/Locator.php +++ b/vendor/simplepie/simplepie/library/SimplePie/Locator.php @@ -5,7 +5,7 @@ * A PHP-Based RSS and Atom Feed Framework. * Takes the hard work out of managing a complete RSS/Atom solution. * - * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors + * 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 @@ -41,15 +41,394 @@ * @license http://www.opensource.org/licenses/bsd-license.php BSD License */ -use SimplePie\Locator; +/** + * 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 $working[0]; + } + } + return null; + } -class_exists('SimplePie\Locator'); + public function is_feed($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) + { + $mime_types[] = 'text/html'; + } -// @trigger_error(sprintf('Using the "SimplePie_Locator" class is deprecated since SimplePie 1.7, use "SimplePie\Locator" instead.'), \E_USER_DEPRECATED); + return in_array($sniffed, $mime_types); + } + elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL) + { + return true; + } + else + { + return false; + } + } -if (\false) { - /** @deprecated since SimplePie 1.7, use "SimplePie\Locator" instead */ - class SimplePie_Locator extends Locator - { - } + 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; + } } + +class_alias('SimplePie_Locator', 'SimplePie\Locator', false); |