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1<?php
2/**
3 * SimplePie
4 *
5 * A PHP-Based RSS and Atom Feed Framework.
6 * Takes the hard work out of managing a complete RSS/Atom solution.
7 *
8 * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without modification, are
12 * permitted provided that the following conditions are met:
13 *
14 * * Redistributions of source code must retain the above copyright notice, this list of
15 * conditions and the following disclaimer.
16 *
17 * * Redistributions in binary form must reproduce the above copyright notice, this list
18 * of conditions and the following disclaimer in the documentation and/or other materials
19 * provided with the distribution.
20 *
21 * * Neither the name of the SimplePie Team nor the names of its contributors may be used
22 * to endorse or promote products derived from this software without specific prior
23 * written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
26 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
28 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 *
35 * @package SimplePie
36 * @version 1.3.1
37 * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
38 * @author Ryan Parman
39 * @author Geoffrey 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
45/**
46 * Used for fetching remote files and reading local files
47 *
48 * Supports HTTP 1.0 via cURL or fsockopen, with spotty HTTP 1.1 support
49 *
50 * This class can be overloaded with {@see SimplePie::set_file_class()}
51 *
52 * @package SimplePie
53 * @subpackage HTTP
54 * @todo Move to properly supporting RFC2616 (HTTP/1.1)
55 */
56class SimplePie_File
57{
58 var $url;
59 var $useragent;
60 var $success = true;
61 var $headers = array();
62 var $body;
63 var $status_code;
64 var $redirects = 0;
65 var $error;
66 var $method = SIMPLEPIE_FILE_SOURCE_NONE;
67
68 public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false)
69 {
70 if (class_exists('idna_convert'))
71 {
72 $idn = new idna_convert();
73 $parsed = SimplePie_Misc::parse_url($url);
74 $url = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']);
75 }
76 $this->url = $url;
77 $this->useragent = $useragent;
78 if (preg_match('/^http(s)?:\/\//i', $url))
79 {
80 if ($useragent === null)
81 {
82 $useragent = ini_get('user_agent');
83 $this->useragent = $useragent;
84 }
85 if (!is_array($headers))
86 {
87 $headers = array();
88 }
89 if (!$force_fsockopen && function_exists('curl_exec'))
90 {
91 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_CURL;
92 $fp = curl_init();
93 $headers2 = array();
94 foreach ($headers as $key => $value)
95 {
96 $headers2[] = "$key: $value";
97 }
98 if (version_compare(SimplePie_Misc::get_curl_version(), '7.10.5', '>='))
99 {
100 curl_setopt($fp, CURLOPT_ENCODING, '');
101 }
102 curl_setopt($fp, CURLOPT_URL, $url);
103 curl_setopt($fp, CURLOPT_HEADER, 1);
104 curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1);
105 curl_setopt($fp, CURLOPT_TIMEOUT, $timeout);
106 curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout);
107 curl_setopt($fp, CURLOPT_REFERER, $url);
108 curl_setopt($fp, CURLOPT_USERAGENT, $useragent);
109 curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);
110 if (!ini_get('open_basedir') && !ini_get('safe_mode') && version_compare(SimplePie_Misc::get_curl_version(), '7.15.2', '>='))
111 {
112 curl_setopt($fp, CURLOPT_FOLLOWLOCATION, 1);
113 curl_setopt($fp, CURLOPT_MAXREDIRS, $redirects);
114 }
115
116 $this->headers = curl_exec($fp);
117 if (curl_errno($fp) === 23 || curl_errno($fp) === 61)
118 {
119 curl_setopt($fp, CURLOPT_ENCODING, 'none');
120 $this->headers = curl_exec($fp);
121 }
122 if (curl_errno($fp))
123 {
124 $this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp);
125 $this->success = false;
126 }
127 else
128 {
129 $info = curl_getinfo($fp);
130 curl_close($fp);
131 $this->headers = explode("\r\n\r\n", $this->headers, $info['redirect_count'] + 1);
132 $this->headers = array_pop($this->headers);
133 $parser = new SimplePie_HTTP_Parser($this->headers);
134 if ($parser->parse())
135 {
136 $this->headers = $parser->headers;
137 $this->body = $parser->body;
138 $this->status_code = $parser->status_code;
139 if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
140 {
141 $this->redirects++;
142 $location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
143 return $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
144 }
145 }
146 }
147 }
148 else
149 {
150 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_FSOCKOPEN;
151 $url_parts = parse_url($url);
152 $socket_host = $url_parts['host'];
153 if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https')
154 {
155 $socket_host = "ssl://$url_parts[host]";
156 $url_parts['port'] = 443;
157 }
158 if (!isset($url_parts['port']))
159 {
160 $url_parts['port'] = 80;
161 }
162 $fp = @fsockopen($socket_host, $url_parts['port'], $errno, $errstr, $timeout);
163 if (!$fp)
164 {
165 $this->error = 'fsockopen error: ' . $errstr;
166 $this->success = false;
167 }
168 else
169 {
170 stream_set_timeout($fp, $timeout);
171 if (isset($url_parts['path']))
172 {
173 if (isset($url_parts['query']))
174 {
175 $get = "$url_parts[path]?$url_parts[query]";
176 }
177 else
178 {
179 $get = $url_parts['path'];
180 }
181 }
182 else
183 {
184 $get = '/';
185 }
186 $out = "GET $get HTTP/1.1\r\n";
187 $out .= "Host: $url_parts[host]\r\n";
188 $out .= "User-Agent: $useragent\r\n";
189 if (extension_loaded('zlib'))
190 {
191 $out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n";
192 }
193
194 if (isset($url_parts['user']) && isset($url_parts['pass']))
195 {
196 $out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n";
197 }
198 foreach ($headers as $key => $value)
199 {
200 $out .= "$key: $value\r\n";
201 }
202 $out .= "Connection: Close\r\n\r\n";
203 fwrite($fp, $out);
204
205 $info = stream_get_meta_data($fp);
206
207 $this->headers = '';
208 while (!$info['eof'] && !$info['timed_out'])
209 {
210 $this->headers .= fread($fp, 1160);
211 $info = stream_get_meta_data($fp);
212 }
213 if (!$info['timed_out'])
214 {
215 $parser = new SimplePie_HTTP_Parser($this->headers);
216 if ($parser->parse())
217 {
218 $this->headers = $parser->headers;
219 $this->body = $parser->body;
220 $this->status_code = $parser->status_code;
221 if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
222 {
223 $this->redirects++;
224 $location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
225 return $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
226 }
227 if (isset($this->headers['content-encoding']))
228 {
229 // Hey, we act dumb elsewhere, so let's do that here too
230 switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20")))
231 {
232 case 'gzip':
233 case 'x-gzip':
234 $decoder = new SimplePie_gzdecode($this->body);
235 if (!$decoder->parse())
236 {
237 $this->error = 'Unable to decode HTTP "gzip" stream';
238 $this->success = false;
239 }
240 else
241 {
242 $this->body = $decoder->data;
243 }
244 break;
245
246 case 'deflate':
247 if (($decompressed = gzinflate($this->body)) !== false)
248 {
249 $this->body = $decompressed;
250 }
251 else if (($decompressed = gzuncompress($this->body)) !== false)
252 {
253 $this->body = $decompressed;
254 }
255 else if (function_exists('gzdecode') && ($decompressed = gzdecode($this->body)) !== false)
256 {
257 $this->body = $decompressed;
258 }
259 else
260 {
261 $this->error = 'Unable to decode HTTP "deflate" stream';
262 $this->success = false;
263 }
264 break;
265
266 default:
267 $this->error = 'Unknown content coding';
268 $this->success = false;
269 }
270 }
271 }
272 }
273 else
274 {
275 $this->error = 'fsocket timed out';
276 $this->success = false;
277 }
278 fclose($fp);
279 }
280 }
281 }
282 else
283 {
284 $this->method = SIMPLEPIE_FILE_SOURCE_LOCAL | SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS;
285 if (!$this->body = file_get_contents($url))
286 {
287 $this->error = 'file_get_contents could not read the file';
288 $this->success = false;
289 }
290 }
291 }
292}