diff options
Diffstat (limited to 'vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.php')
-rw-r--r-- | vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.php | 283 |
1 files changed, 9 insertions, 274 deletions
diff --git a/vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.php b/vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.php index b3a8cf378..f37257f8a 100644 --- a/vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.php +++ b/vendor/simplepie/simplepie/library/SimplePie/Content/Type/Sniffer.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) 2004-2016, 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 @@ -41,280 +41,15 @@ * @license http://www.opensource.org/licenses/bsd-license.php BSD License */ +use SimplePie\Content\Type\Sniffer; -/** - * Content-type sniffing - * - * Based on the rules in http://tools.ietf.org/html/draft-abarth-mime-sniff-06 - * - * This is used since we can't always trust Content-Type headers, and is based - * upon the HTML5 parsing rules. - * - * - * This class can be overloaded with {@see SimplePie::set_content_type_sniffer_class()} - * - * @package SimplePie - * @subpackage HTTP - */ -class SimplePie_Content_Type_Sniffer -{ - /** - * File object - * - * @var SimplePie_File - */ - var $file; - - /** - * Create an instance of the class with the input file - * - * @param SimplePie_Content_Type_Sniffer $file Input file - */ - public function __construct($file) - { - $this->file = $file; - } - - /** - * Get the Content-Type of the specified file - * - * @return string Actual Content-Type - */ - public function get_type() - { - if (isset($this->file->headers['content-type'])) - { - if (!isset($this->file->headers['content-encoding']) - && ($this->file->headers['content-type'] === 'text/plain' - || $this->file->headers['content-type'] === 'text/plain; charset=ISO-8859-1' - || $this->file->headers['content-type'] === 'text/plain; charset=iso-8859-1' - || $this->file->headers['content-type'] === 'text/plain; charset=UTF-8')) - { - return $this->text_or_binary(); - } - - if (($pos = strpos($this->file->headers['content-type'], ';')) !== false) - { - $official = substr($this->file->headers['content-type'], 0, $pos); - } - else - { - $official = $this->file->headers['content-type']; - } - $official = trim(strtolower($official)); - - if ($official === 'unknown/unknown' - || $official === 'application/unknown') - { - return $this->unknown(); - } - elseif (substr($official, -4) === '+xml' - || $official === 'text/xml' - || $official === 'application/xml') - { - return $official; - } - elseif (substr($official, 0, 6) === 'image/') - { - if ($return = $this->image()) - { - return $return; - } - - return $official; - } - elseif ($official === 'text/html') - { - return $this->feed_or_html(); - } +class_exists('SimplePie\Content\Type\Sniffer'); - return $official; - } +// @trigger_error(sprintf('Using the "SimplePie_Content_Type_Sniffer" class is deprecated since SimplePie 1.7, use "SimplePie\Content\Type\Sniffer" instead.'), \E_USER_DEPRECATED); - return $this->unknown(); - } - - /** - * Sniff text or binary - * - * @return string Actual Content-Type - */ - public function text_or_binary() - { - if (substr($this->file->body, 0, 2) === "\xFE\xFF" - || substr($this->file->body, 0, 2) === "\xFF\xFE" - || substr($this->file->body, 0, 4) === "\x00\x00\xFE\xFF" - || substr($this->file->body, 0, 3) === "\xEF\xBB\xBF") - { - return 'text/plain'; - } - elseif (preg_match('/[\x00-\x08\x0E-\x1A\x1C-\x1F]/', $this->file->body)) - { - return 'application/octet-stream'; - } - - return 'text/plain'; - } - - /** - * Sniff unknown - * - * @return string Actual Content-Type - */ - public function unknown() - { - $ws = strspn($this->file->body, "\x09\x0A\x0B\x0C\x0D\x20"); - if (strtolower(substr($this->file->body, $ws, 14)) === '<!doctype html' - || strtolower(substr($this->file->body, $ws, 5)) === '<html' - || strtolower(substr($this->file->body, $ws, 7)) === '<script') - { - return 'text/html'; - } - elseif (substr($this->file->body, 0, 5) === '%PDF-') - { - return 'application/pdf'; - } - elseif (substr($this->file->body, 0, 11) === '%!PS-Adobe-') - { - return 'application/postscript'; - } - elseif (substr($this->file->body, 0, 6) === 'GIF87a' - || substr($this->file->body, 0, 6) === 'GIF89a') - { - return 'image/gif'; - } - elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") - { - return 'image/png'; - } - elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF") - { - return 'image/jpeg'; - } - elseif (substr($this->file->body, 0, 2) === "\x42\x4D") - { - return 'image/bmp'; - } - elseif (substr($this->file->body, 0, 4) === "\x00\x00\x01\x00") - { - return 'image/vnd.microsoft.icon'; - } - - return $this->text_or_binary(); - } - - /** - * Sniff images - * - * @return string Actual Content-Type - */ - public function image() - { - if (substr($this->file->body, 0, 6) === 'GIF87a' - || substr($this->file->body, 0, 6) === 'GIF89a') - { - return 'image/gif'; - } - elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") - { - return 'image/png'; - } - elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF") - { - return 'image/jpeg'; - } - elseif (substr($this->file->body, 0, 2) === "\x42\x4D") - { - return 'image/bmp'; - } - elseif (substr($this->file->body, 0, 4) === "\x00\x00\x01\x00") - { - return 'image/vnd.microsoft.icon'; - } - - return false; - } - - /** - * Sniff HTML - * - * @return string Actual Content-Type - */ - public function feed_or_html() - { - $len = strlen($this->file->body); - $pos = strspn($this->file->body, "\x09\x0A\x0D\x20\xEF\xBB\xBF"); - - while ($pos < $len) - { - switch ($this->file->body[$pos]) - { - case "\x09": - case "\x0A": - case "\x0D": - case "\x20": - $pos += strspn($this->file->body, "\x09\x0A\x0D\x20", $pos); - continue 2; - - case '<': - $pos++; - break; - - default: - return 'text/html'; - } - - if (substr($this->file->body, $pos, 3) === '!--') - { - $pos += 3; - if ($pos < $len && ($pos = strpos($this->file->body, '-->', $pos)) !== false) - { - $pos += 3; - } - else - { - return 'text/html'; - } - } - elseif (substr($this->file->body, $pos, 1) === '!') - { - if ($pos < $len && ($pos = strpos($this->file->body, '>', $pos)) !== false) - { - $pos++; - } - else - { - return 'text/html'; - } - } - elseif (substr($this->file->body, $pos, 1) === '?') - { - if ($pos < $len && ($pos = strpos($this->file->body, '?>', $pos)) !== false) - { - $pos += 2; - } - else - { - return 'text/html'; - } - } - elseif (substr($this->file->body, $pos, 3) === 'rss' - || substr($this->file->body, $pos, 7) === 'rdf:RDF') - { - return 'application/rss+xml'; - } - elseif (substr($this->file->body, $pos, 4) === 'feed') - { - return 'application/atom+xml'; - } - else - { - return 'text/html'; - } - } - - return 'text/html'; - } +if (\false) { + /** @deprecated since SimplePie 1.7, use "SimplePie\Content\Type\Sniffer" instead */ + class SimplePie_Content_Type_Sniffer extends Sniffer + { + } } - -class_alias('SimplePie_Content_Type_Sniffer', 'SimplePie\Content\Type\Sniffer', false); |