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
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: */
56: class 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: }
293: