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307 lines
10 KiB
307 lines
10 KiB
2 years ago
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<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2016, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @copyright 2004-2016 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Geoffrey Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Used for fetching remote files and reading local files
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*
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* Supports HTTP 1.0 via cURL or fsockopen, with spotty HTTP 1.1 support
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*
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* This class can be overloaded with {@see SimplePie::set_file_class()}
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*
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* @package SimplePie
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* @subpackage HTTP
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* @todo Move to properly supporting RFC2616 (HTTP/1.1)
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*/
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class SimplePie_File
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{
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var $url;
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var $useragent;
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var $success = true;
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var $headers = array();
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var $body;
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var $status_code;
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var $redirects = 0;
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var $error;
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var $method = SIMPLEPIE_FILE_SOURCE_NONE;
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var $permanent_url;
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public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false, $curl_options = array())
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{
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if (class_exists('idna_convert'))
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{
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$idn = new idna_convert();
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$parsed = SimplePie_Misc::parse_url($url);
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$url = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']);
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}
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$this->url = $url;
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$this->permanent_url = $url;
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$this->useragent = $useragent;
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if (preg_match('/^http(s)?:\/\//i', $url))
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{
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if ($useragent === null)
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{
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$useragent = ini_get('user_agent');
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$this->useragent = $useragent;
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}
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if (!is_array($headers))
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{
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$headers = array();
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}
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if (!$force_fsockopen && function_exists('curl_exec'))
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{
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$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_CURL;
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$fp = curl_init();
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$headers2 = array();
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foreach ($headers as $key => $value)
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{
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$headers2[] = "$key: $value";
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}
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if (version_compare(SimplePie_Misc::get_curl_version(), '7.10.5', '>='))
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{
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curl_setopt($fp, CURLOPT_ENCODING, '');
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}
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curl_setopt($fp, CURLOPT_URL, $url);
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curl_setopt($fp, CURLOPT_HEADER, 1);
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curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($fp, CURLOPT_FAILONERROR, 1);
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curl_setopt($fp, CURLOPT_TIMEOUT, $timeout);
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curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout);
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curl_setopt($fp, CURLOPT_REFERER, $url);
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curl_setopt($fp, CURLOPT_USERAGENT, $useragent);
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curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);
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if (!ini_get('open_basedir') && !ini_get('safe_mode') && version_compare(SimplePie_Misc::get_curl_version(), '7.15.2', '>='))
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{
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curl_setopt($fp, CURLOPT_FOLLOWLOCATION, 1);
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curl_setopt($fp, CURLOPT_MAXREDIRS, $redirects);
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}
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foreach ($curl_options as $curl_param => $curl_value) {
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curl_setopt($fp, $curl_param, $curl_value);
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}
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$this->headers = curl_exec($fp);
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if (curl_errno($fp) === 23 || curl_errno($fp) === 61)
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{
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curl_setopt($fp, CURLOPT_ENCODING, 'none');
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$this->headers = curl_exec($fp);
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}
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if (curl_errno($fp))
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{
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$this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp);
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$this->success = false;
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}
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else
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{
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// Use the updated url provided by curl_getinfo after any redirects.
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if ($info = curl_getinfo($fp)) {
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$this->url = $info['url'];
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}
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curl_close($fp);
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$this->headers = explode("\r\n\r\n", $this->headers, $info['redirect_count'] + 1);
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$this->headers = array_pop($this->headers);
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$parser = new SimplePie_HTTP_Parser($this->headers);
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if ($parser->parse())
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{
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$this->headers = $parser->headers;
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$this->body = trim($parser->body);
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$this->status_code = $parser->status_code;
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if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
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{
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$this->redirects++;
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$location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
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$previousStatusCode = $this->status_code;
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$this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
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$this->permanent_url = ($previousStatusCode == 301) ? $location : $url;
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return;
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}
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}
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}
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}
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else
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{
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$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_FSOCKOPEN;
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$url_parts = parse_url($url);
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$socket_host = $url_parts['host'];
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if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https')
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{
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$socket_host = "ssl://$url_parts[host]";
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$url_parts['port'] = 443;
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}
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if (!isset($url_parts['port']))
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{
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$url_parts['port'] = 80;
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}
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$fp = @fsockopen($socket_host, $url_parts['port'], $errno, $errstr, $timeout);
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if (!$fp)
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{
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$this->error = 'fsockopen error: ' . $errstr;
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$this->success = false;
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}
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else
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{
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stream_set_timeout($fp, $timeout);
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if (isset($url_parts['path']))
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{
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if (isset($url_parts['query']))
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{
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$get = "$url_parts[path]?$url_parts[query]";
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}
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else
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{
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$get = $url_parts['path'];
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}
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}
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else
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{
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$get = '/';
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}
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$out = "GET $get HTTP/1.1\r\n";
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$out .= "Host: $url_parts[host]\r\n";
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$out .= "User-Agent: $useragent\r\n";
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if (extension_loaded('zlib'))
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{
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$out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n";
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}
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if (isset($url_parts['user']) && isset($url_parts['pass']))
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{
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$out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n";
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}
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foreach ($headers as $key => $value)
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{
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$out .= "$key: $value\r\n";
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}
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$out .= "Connection: Close\r\n\r\n";
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fwrite($fp, $out);
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$info = stream_get_meta_data($fp);
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$this->headers = '';
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while (!$info['eof'] && !$info['timed_out'])
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{
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$this->headers .= fread($fp, 1160);
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$info = stream_get_meta_data($fp);
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}
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if (!$info['timed_out'])
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{
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$parser = new SimplePie_HTTP_Parser($this->headers);
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if ($parser->parse())
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{
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$this->headers = $parser->headers;
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$this->body = $parser->body;
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$this->status_code = $parser->status_code;
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if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
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{
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$this->redirects++;
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$location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
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$previousStatusCode = $this->status_code;
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$this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
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$this->permanent_url = ($previousStatusCode == 301) ? $location : $url;
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return;
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}
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if (isset($this->headers['content-encoding']))
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{
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// Hey, we act dumb elsewhere, so let's do that here too
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switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20")))
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{
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case 'gzip':
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case 'x-gzip':
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$decoder = new SimplePie_gzdecode($this->body);
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if (!$decoder->parse())
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{
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$this->error = 'Unable to decode HTTP "gzip" stream';
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$this->success = false;
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}
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else
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{
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$this->body = trim($decoder->data);
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}
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break;
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case 'deflate':
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if (($decompressed = gzinflate($this->body)) !== false)
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{
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$this->body = $decompressed;
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}
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else if (($decompressed = gzuncompress($this->body)) !== false)
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{
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$this->body = $decompressed;
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}
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else if (function_exists('gzdecode') && ($decompressed = gzdecode($this->body)) !== false)
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{
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$this->body = $decompressed;
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}
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else
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{
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$this->error = 'Unable to decode HTTP "deflate" stream';
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$this->success = false;
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}
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break;
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default:
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$this->error = 'Unknown content coding';
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$this->success = false;
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}
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}
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}
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}
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else
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{
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$this->error = 'fsocket timed out';
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$this->success = false;
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}
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fclose($fp);
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}
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}
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}
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else
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{
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$this->method = SIMPLEPIE_FILE_SOURCE_LOCAL | SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS;
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if (empty($url) || !($this->body = trim(file_get_contents($url))))
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{
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$this->error = 'file_get_contents could not read the file';
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$this->success = false;
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}
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}
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}
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}
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