1<?php 2 3/** 4 * SimplePie 5 * 6 * A PHP-Based RSS and Atom Feed Framework. 7 * Takes the hard work out of managing a complete RSS/Atom solution. 8 * 9 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without modification, are 13 * permitted provided that the following conditions are met: 14 * 15 * * Redistributions of source code must retain the above copyright notice, this list of 16 * conditions and the following disclaimer. 17 * 18 * * Redistributions in binary form must reproduce the above copyright notice, this list 19 * of conditions and the following disclaimer in the documentation and/or other materials 20 * provided with the distribution. 21 * 22 * * Neither the name of the SimplePie Team nor the names of its contributors may be used 23 * to endorse or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS 27 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 28 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS 29 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 * 36 * @package SimplePie 37 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue 38 * @author Ryan Parman 39 * @author Sam Sneddon 40 * @author Ryan McCue 41 * @link http://simplepie.org/ SimplePie 42 * @license http://www.opensource.org/licenses/bsd-license.php BSD License 43 */ 44 45namespace SimplePie; 46 47/** 48 * Used for fetching remote files and reading local files 49 * 50 * Supports HTTP 1.0 via cURL or fsockopen, with spotty HTTP 1.1 support 51 * 52 * This class can be overloaded with {@see \SimplePie\SimplePie::set_file_class()} 53 * 54 * @package SimplePie 55 * @subpackage HTTP 56 * @todo Move to properly supporting RFC2616 (HTTP/1.1) 57 */ 58class File 59{ 60 public $url; 61 public $useragent; 62 public $success = true; 63 public $headers = []; 64 public $body; 65 public $status_code = 0; 66 public $redirects = 0; 67 public $error; 68 public $method = \SimplePie\SimplePie::FILE_SOURCE_NONE; 69 public $permanent_url; 70 71 public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false, $curl_options = []) 72 { 73 if (class_exists('idna_convert')) { 74 $idn = new \idna_convert(); 75 $parsed = \SimplePie\Misc::parse_url($url); 76 $url = \SimplePie\Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], null); 77 } 78 $this->url = $url; 79 $this->permanent_url = $url; 80 $this->useragent = $useragent; 81 if (preg_match('/^http(s)?:\/\//i', $url)) { 82 if ($useragent === null) { 83 $useragent = ini_get('user_agent'); 84 $this->useragent = $useragent; 85 } 86 if (!is_array($headers)) { 87 $headers = []; 88 } 89 if (!$force_fsockopen && function_exists('curl_exec')) { 90 $this->method = \SimplePie\SimplePie::FILE_SOURCE_REMOTE | \SimplePie\SimplePie::FILE_SOURCE_CURL; 91 $fp = curl_init(); 92 $headers2 = []; 93 foreach ($headers as $key => $value) { 94 $headers2[] = "$key: $value"; 95 } 96 if (version_compare(\SimplePie\Misc::get_curl_version(), '7.10.5', '>=')) { 97 curl_setopt($fp, CURLOPT_ENCODING, ''); 98 } 99 curl_setopt($fp, CURLOPT_URL, $url); 100 curl_setopt($fp, CURLOPT_HEADER, 1); 101 curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1); 102 curl_setopt($fp, CURLOPT_FAILONERROR, 1); 103 curl_setopt($fp, CURLOPT_TIMEOUT, $timeout); 104 curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout); 105 curl_setopt($fp, CURLOPT_REFERER, \SimplePie\Misc::url_remove_credentials($url)); 106 curl_setopt($fp, CURLOPT_USERAGENT, $useragent); 107 curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2); 108 foreach ($curl_options as $curl_param => $curl_value) { 109 curl_setopt($fp, $curl_param, $curl_value); 110 } 111 112 $this->headers = curl_exec($fp); 113 if (curl_errno($fp) === 23 || curl_errno($fp) === 61) { 114 curl_setopt($fp, CURLOPT_ENCODING, 'none'); 115 $this->headers = curl_exec($fp); 116 } 117 $this->status_code = curl_getinfo($fp, CURLINFO_HTTP_CODE); 118 if (curl_errno($fp)) { 119 $this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp); 120 $this->success = false; 121 } else { 122 // Use the updated url provided by curl_getinfo after any redirects. 123 if ($info = curl_getinfo($fp)) { 124 $this->url = $info['url']; 125 } 126 curl_close($fp); 127 $this->headers = \SimplePie\HTTP\Parser::prepareHeaders($this->headers, $info['redirect_count'] + 1); 128 $parser = new \SimplePie\HTTP\Parser($this->headers); 129 if ($parser->parse()) { 130 $this->headers = $parser->headers; 131 $this->body = trim($parser->body); 132 $this->status_code = $parser->status_code; 133 if ((in_array($this->status_code, [300, 301, 302, 303, 307]) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) { 134 $this->redirects++; 135 $location = \SimplePie\Misc::absolutize_url($this->headers['location'], $url); 136 $previousStatusCode = $this->status_code; 137 $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen, $curl_options); 138 $this->permanent_url = ($previousStatusCode == 301) ? $location : $url; 139 return; 140 } 141 } 142 } 143 } else { 144 $this->method = \SimplePie\SimplePie::FILE_SOURCE_REMOTE | \SimplePie\SimplePie::FILE_SOURCE_FSOCKOPEN; 145 $url_parts = parse_url($url); 146 $socket_host = $url_parts['host']; 147 if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') { 148 $socket_host = "ssl://$url_parts[host]"; 149 $url_parts['port'] = 443; 150 } 151 if (!isset($url_parts['port'])) { 152 $url_parts['port'] = 80; 153 } 154 $fp = @fsockopen($socket_host, $url_parts['port'], $errno, $errstr, $timeout); 155 if (!$fp) { 156 $this->error = 'fsockopen error: ' . $errstr; 157 $this->success = false; 158 } else { 159 stream_set_timeout($fp, $timeout); 160 if (isset($url_parts['path'])) { 161 if (isset($url_parts['query'])) { 162 $get = "$url_parts[path]?$url_parts[query]"; 163 } else { 164 $get = $url_parts['path']; 165 } 166 } else { 167 $get = '/'; 168 } 169 $out = "GET $get HTTP/1.1\r\n"; 170 $out .= "Host: $url_parts[host]\r\n"; 171 $out .= "User-Agent: $useragent\r\n"; 172 if (extension_loaded('zlib')) { 173 $out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n"; 174 } 175 176 if (isset($url_parts['user']) && isset($url_parts['pass'])) { 177 $out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n"; 178 } 179 foreach ($headers as $key => $value) { 180 $out .= "$key: $value\r\n"; 181 } 182 $out .= "Connection: Close\r\n\r\n"; 183 fwrite($fp, $out); 184 185 $info = stream_get_meta_data($fp); 186 187 $this->headers = ''; 188 while (!$info['eof'] && !$info['timed_out']) { 189 $this->headers .= fread($fp, 1160); 190 $info = stream_get_meta_data($fp); 191 } 192 if (!$info['timed_out']) { 193 $parser = new \SimplePie\HTTP\Parser($this->headers); 194 if ($parser->parse()) { 195 $this->headers = $parser->headers; 196 $this->body = $parser->body; 197 $this->status_code = $parser->status_code; 198 if ((in_array($this->status_code, [300, 301, 302, 303, 307]) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) { 199 $this->redirects++; 200 $location = \SimplePie\Misc::absolutize_url($this->headers['location'], $url); 201 $previousStatusCode = $this->status_code; 202 $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen, $curl_options); 203 $this->permanent_url = ($previousStatusCode == 301) ? $location : $url; 204 return; 205 } 206 if (isset($this->headers['content-encoding'])) { 207 // Hey, we act dumb elsewhere, so let's do that here too 208 switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20"))) { 209 case 'gzip': 210 case 'x-gzip': 211 $decoder = new \SimplePie\Gzdecode($this->body); 212 if (!$decoder->parse()) { 213 $this->error = 'Unable to decode HTTP "gzip" stream'; 214 $this->success = false; 215 } else { 216 $this->body = trim($decoder->data); 217 } 218 break; 219 220 case 'deflate': 221 if (($decompressed = gzinflate($this->body)) !== false) { 222 $this->body = $decompressed; 223 } elseif (($decompressed = gzuncompress($this->body)) !== false) { 224 $this->body = $decompressed; 225 } elseif (function_exists('gzdecode') && ($decompressed = gzdecode($this->body)) !== false) { 226 $this->body = $decompressed; 227 } else { 228 $this->error = 'Unable to decode HTTP "deflate" stream'; 229 $this->success = false; 230 } 231 break; 232 233 default: 234 $this->error = 'Unknown content coding'; 235 $this->success = false; 236 } 237 } 238 } 239 } else { 240 $this->error = 'fsocket timed out'; 241 $this->success = false; 242 } 243 fclose($fp); 244 } 245 } 246 } else { 247 $this->method = \SimplePie\SimplePie::FILE_SOURCE_LOCAL | \SimplePie\SimplePie::FILE_SOURCE_FILE_GET_CONTENTS; 248 if (empty($url) || !($this->body = trim(file_get_contents($url)))) { 249 $this->error = 'file_get_contents could not read the file'; 250 $this->success = false; 251 } 252 } 253 } 254} 255 256class_alias('SimplePie\File', 'SimplePie_File'); 257