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  • Committer: Jacek Nykis
  • Date: 2015-01-05 16:17:05 UTC
  • Revision ID: jacek.nykis@canonical.com-20150105161705-w544l1h5mcg7u4w9
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<?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
 */
 
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
}