diff options
Diffstat (limited to 'vendor/simplepie/simplepie/src/Locator.php')
| -rw-r--r-- | vendor/simplepie/simplepie/src/Locator.php | 335 |
1 files changed, 326 insertions, 9 deletions
diff --git a/vendor/simplepie/simplepie/src/Locator.php b/vendor/simplepie/simplepie/src/Locator.php index 1696937d4..2eebf10df 100644 --- a/vendor/simplepie/simplepie/src/Locator.php +++ b/vendor/simplepie/simplepie/src/Locator.php @@ -5,10 +5,7 @@ * A PHP-Based RSS and Atom Feed Framework. * Takes the hard work out of managing a complete RSS/Atom solution. * - * Please note: This file is automatically generated by a build script. The - * full original source is always available from http://simplepie.org/ - * - * 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 @@ -46,10 +43,330 @@ namespace SimplePie; -class_exists('SimplePie_Locator'); +/** + * Used for feed auto-discovery + * + * + * This class can be overloaded with {@see \SimplePie\SimplePie::set_locator_class()} + * + * @package SimplePie + */ +class Locator +{ + public $useragent; + public $timeout; + public $file; + public $local = []; + public $elsewhere = []; + public $cached_entities = []; + public $http_base; + public $base; + public $base_location = 0; + public $checked_feeds = 0; + public $max_checked_feeds = 10; + public $force_fsockopen = false; + public $curl_options = []; + public $dom; + protected $registry; + + public function __construct(\SimplePie\File $file, $timeout = 10, $useragent = null, $max_checked_feeds = 10, $force_fsockopen = false, $curl_options = []) + { + $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(['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\SimplePie::LOCATOR_ALL, &$working = null) + { + if ($this->is_feed($this->file)) { + return $this->file; + } + + if ($this->file->method & \SimplePie\SimplePie::FILE_SOURCE_REMOTE) { + $sniffer = $this->registry->create('Content_Type_Sniffer', [$this->file]); + if ($sniffer->get_type() !== 'text/html') { + return null; + } + } + + if ($type & ~\SimplePie\SimplePie::LOCATOR_NONE) { + $this->get_base(); + } + + if ($type & \SimplePie\SimplePie::LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery()) { + return $working[0]; + } + + if ($type & (\SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION | \SimplePie\SimplePie::LOCATOR_LOCAL_BODY | \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION | \SimplePie\SimplePie::LOCATOR_REMOTE_BODY) && $this->get_links()) { + if ($type & \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local)) { + return $working[0]; + } + + if ($type & \SimplePie\SimplePie::LOCATOR_LOCAL_BODY && $working = $this->body($this->local)) { + return $working[0]; + } + + if ($type & \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere)) { + return $working[0]; + } + + if ($type & \SimplePie\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\SimplePie::FILE_SOURCE_REMOTE) { + $sniffer = $this->registry->create('Content_Type_Sniffer', [$file]); + $sniffed = $sniffer->get_type(); + $mime_types = ['application/rss+xml', 'application/rdf+xml', + 'text/rdf', 'application/atom+xml', 'text/xml', + 'application/xml', 'application/x-rss+xml']; + if ($check_html) { + $mime_types[] = 'text/html'; + } -if (\false) { - class Locator extends \SimplePie_Locator - { - } + return in_array($sniffed, $mime_types); + } elseif ($file->method & \SimplePie\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 = $this->registry->call('Misc', 'absolutize_url', [trim($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 = []; + $feeds = []; + $feeds = array_merge($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', [strtolower($link->getAttribute('rel'))])); + $line = method_exists($link, 'getLineNo') ? $link->getLineNo() : 1; + + if ($this->base_location < $line) { + $href = $this->registry->call('Misc', 'absolutize_url', [trim($link->getAttribute('href')), $this->base]); + } else { + $href = $this->registry->call('Misc', 'absolutize_url', [trim($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', [$link->getAttribute('type')])), ['text/html', 'application/rss+xml', 'application/atom+xml'])) && !isset($feeds[$href])) { + $this->checked_feeds++; + $headers = [ + '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 = $this->registry->create('File', [$href, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]); + if ($feed->success && ($feed->method & \SimplePie\SimplePie::FILE_SOURCE_REMOTE === 0 || ($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 = $this->registry->call('Misc', 'parse_url', [$href]); + if ($parsed['scheme'] === '' || preg_match('/^(https?|feed)?$/i', $parsed['scheme'])) { + if (method_exists($link, 'getLineNo') && $this->base_location < $link->getLineNo()) { + $href = $this->registry->call('Misc', 'absolutize_url', [trim($link->getAttribute('href')), $this->base]); + } else { + $href = $this->registry->call('Misc', 'absolutize_url', [trim($link->getAttribute('href')), $this->http_base]); + } + if ($href === false) { + continue; + } + + $current = $this->registry->call('Misc', 'parse_url', [$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 = $this->registry->call('Misc', 'parse_url', [$href]); + if ($parsed['scheme'] === '' || + preg_match('/^https?$/i', $parsed['scheme'])) { + if (method_exists($link, 'getLineNo') && + $this->base_location < $link->getLineNo()) { + $href = + $this->registry->call( + 'Misc', + 'absolutize_url', + [trim($link->getAttribute('href')), + $this->base] + ); + } else { + $href = + $this->registry->call( + 'Misc', + 'absolutize_url', + [trim($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, '.')), ['.rss', '.rdf', '.atom', '.xml'])) { + $this->checked_feeds++; + + $headers = [ + '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 = $this->registry->create('File', [$value, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]); + if ($feed->success && ($feed->method & \SimplePie\SimplePie::FILE_SOURCE_REMOTE === 0 || ($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('/(feed|rss|rdf|atom|xml)/i', $value)) { + $this->checked_feeds++; + $headers = [ + '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 = $this->registry->create('File', [$value, $this->timeout, 5, null, $this->useragent, $this->force_fsockopen, $this->curl_options]); + if ($feed->success && ($feed->method & \SimplePie\SimplePie::FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed)) { + return [$feed]; + } else { + unset($array[$key]); + } + } + } + return null; + } } + +class_alias('SimplePie\Locator', 'SimplePie_Locator', false); |