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author | Nicolas LÅ“uillet <nicolas.loeuillet@gmail.com> | 2013-12-23 02:28:56 -0800 |
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committer | Nicolas LÅ“uillet <nicolas.loeuillet@gmail.com> | 2013-12-23 02:28:56 -0800 |
commit | 60fc4f4b1ab37fbfe9021f3fa1395d66a4424ed2 (patch) | |
tree | 515c4b9c8286ae363f77722c91acb878151dc386 /inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php | |
parent | cbfd5a1019f47fadefd8490dae9f039ae894298d (diff) | |
parent | da5fc42f615eeb45a702604970f94967507fb432 (diff) | |
download | wallabag-60fc4f4b1ab37fbfe9021f3fa1395d66a4424ed2.tar.gz wallabag-60fc4f4b1ab37fbfe9021f3fa1395d66a4424ed2.tar.zst wallabag-60fc4f4b1ab37fbfe9021f3fa1395d66a4424ed2.zip |
Merge pull request #363 from inthepoche/dev1.3.0
poche 1.3.0
Diffstat (limited to 'inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php')
-rw-r--r-- | inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php b/inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php new file mode 100644 index 00000000..20d053dc --- /dev/null +++ b/inc/3rdparty/libraries/simplepie/library/SimplePie/Content/Type/Sniffer.php | |||
@@ -0,0 +1,332 @@ | |||
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 | /** | ||
47 | * Content-type sniffing | ||
48 | * | ||
49 | * Based on the rules in http://tools.ietf.org/html/draft-abarth-mime-sniff-06 | ||
50 | * | ||
51 | * This is used since we can't always trust Content-Type headers, and is based | ||
52 | * upon the HTML5 parsing rules. | ||
53 | * | ||
54 | * | ||
55 | * This class can be overloaded with {@see SimplePie::set_content_type_sniffer_class()} | ||
56 | * | ||
57 | * @package SimplePie | ||
58 | * @subpackage HTTP | ||
59 | */ | ||
60 | class SimplePie_Content_Type_Sniffer | ||
61 | { | ||
62 | /** | ||
63 | * File object | ||
64 | * | ||
65 | * @var SimplePie_File | ||
66 | */ | ||
67 | var $file; | ||
68 | |||
69 | /** | ||
70 | * Create an instance of the class with the input file | ||
71 | * | ||
72 | * @param SimplePie_Content_Type_Sniffer $file Input file | ||
73 | */ | ||
74 | public function __construct($file) | ||
75 | { | ||
76 | $this->file = $file; | ||
77 | } | ||
78 | |||
79 | /** | ||
80 | * Get the Content-Type of the specified file | ||
81 | * | ||
82 | * @return string Actual Content-Type | ||
83 | */ | ||
84 | public function get_type() | ||
85 | { | ||
86 | if (isset($this->file->headers['content-type'])) | ||
87 | { | ||
88 | if (!isset($this->file->headers['content-encoding']) | ||
89 | && ($this->file->headers['content-type'] === 'text/plain' | ||
90 | || $this->file->headers['content-type'] === 'text/plain; charset=ISO-8859-1' | ||
91 | || $this->file->headers['content-type'] === 'text/plain; charset=iso-8859-1' | ||
92 | || $this->file->headers['content-type'] === 'text/plain; charset=UTF-8')) | ||
93 | { | ||
94 | return $this->text_or_binary(); | ||
95 | } | ||
96 | |||
97 | if (($pos = strpos($this->file->headers['content-type'], ';')) !== false) | ||
98 | { | ||
99 | $official = substr($this->file->headers['content-type'], 0, $pos); | ||
100 | } | ||
101 | else | ||
102 | { | ||
103 | $official = $this->file->headers['content-type']; | ||
104 | } | ||
105 | $official = trim(strtolower($official)); | ||
106 | |||
107 | if ($official === 'unknown/unknown' | ||
108 | || $official === 'application/unknown') | ||
109 | { | ||
110 | return $this->unknown(); | ||
111 | } | ||
112 | elseif (substr($official, -4) === '+xml' | ||
113 | || $official === 'text/xml' | ||
114 | || $official === 'application/xml') | ||
115 | { | ||
116 | return $official; | ||
117 | } | ||
118 | elseif (substr($official, 0, 6) === 'image/') | ||
119 | { | ||
120 | if ($return = $this->image()) | ||
121 | { | ||
122 | return $return; | ||
123 | } | ||
124 | else | ||
125 | { | ||
126 | return $official; | ||
127 | } | ||
128 | } | ||
129 | elseif ($official === 'text/html') | ||
130 | { | ||
131 | return $this->feed_or_html(); | ||
132 | } | ||
133 | else | ||
134 | { | ||
135 | return $official; | ||
136 | } | ||
137 | } | ||
138 | else | ||
139 | { | ||
140 | return $this->unknown(); | ||
141 | } | ||
142 | } | ||
143 | |||
144 | /** | ||
145 | * Sniff text or binary | ||
146 | * | ||
147 | * @return string Actual Content-Type | ||
148 | */ | ||
149 | public function text_or_binary() | ||
150 | { | ||
151 | if (substr($this->file->body, 0, 2) === "\xFE\xFF" | ||
152 | || substr($this->file->body, 0, 2) === "\xFF\xFE" | ||
153 | || substr($this->file->body, 0, 4) === "\x00\x00\xFE\xFF" | ||
154 | || substr($this->file->body, 0, 3) === "\xEF\xBB\xBF") | ||
155 | { | ||
156 | return 'text/plain'; | ||
157 | } | ||
158 | elseif (preg_match('/[\x00-\x08\x0E-\x1A\x1C-\x1F]/', $this->file->body)) | ||
159 | { | ||
160 | return 'application/octect-stream'; | ||
161 | } | ||
162 | else | ||
163 | { | ||
164 | return 'text/plain'; | ||
165 | } | ||
166 | } | ||
167 | |||
168 | /** | ||
169 | * Sniff unknown | ||
170 | * | ||
171 | * @return string Actual Content-Type | ||
172 | */ | ||
173 | public function unknown() | ||
174 | { | ||
175 | $ws = strspn($this->file->body, "\x09\x0A\x0B\x0C\x0D\x20"); | ||
176 | if (strtolower(substr($this->file->body, $ws, 14)) === '<!doctype html' | ||
177 | || strtolower(substr($this->file->body, $ws, 5)) === '<html' | ||
178 | || strtolower(substr($this->file->body, $ws, 7)) === '<script') | ||
179 | { | ||
180 | return 'text/html'; | ||
181 | } | ||
182 | elseif (substr($this->file->body, 0, 5) === '%PDF-') | ||
183 | { | ||
184 | return 'application/pdf'; | ||
185 | } | ||
186 | elseif (substr($this->file->body, 0, 11) === '%!PS-Adobe-') | ||
187 | { | ||
188 | return 'application/postscript'; | ||
189 | } | ||
190 | elseif (substr($this->file->body, 0, 6) === 'GIF87a' | ||
191 | || substr($this->file->body, 0, 6) === 'GIF89a') | ||
192 | { | ||
193 | return 'image/gif'; | ||
194 | } | ||
195 | elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") | ||
196 | { | ||
197 | return 'image/png'; | ||
198 | } | ||
199 | elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF") | ||
200 | { | ||
201 | return 'image/jpeg'; | ||
202 | } | ||
203 | elseif (substr($this->file->body, 0, 2) === "\x42\x4D") | ||
204 | { | ||
205 | return 'image/bmp'; | ||
206 | } | ||
207 | elseif (substr($this->file->body, 0, 4) === "\x00\x00\x01\x00") | ||
208 | { | ||
209 | return 'image/vnd.microsoft.icon'; | ||
210 | } | ||
211 | else | ||
212 | { | ||
213 | return $this->text_or_binary(); | ||
214 | } | ||
215 | } | ||
216 | |||
217 | /** | ||
218 | * Sniff images | ||
219 | * | ||
220 | * @return string Actual Content-Type | ||
221 | */ | ||
222 | public function image() | ||
223 | { | ||
224 | if (substr($this->file->body, 0, 6) === 'GIF87a' | ||
225 | || substr($this->file->body, 0, 6) === 'GIF89a') | ||
226 | { | ||
227 | return 'image/gif'; | ||
228 | } | ||
229 | elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") | ||
230 | { | ||
231 | return 'image/png'; | ||
232 | } | ||
233 | elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF") | ||
234 | { | ||
235 | return 'image/jpeg'; | ||
236 | } | ||
237 | elseif (substr($this->file->body, 0, 2) === "\x42\x4D") | ||
238 | { | ||
239 | return 'image/bmp'; | ||
240 | } | ||
241 | elseif (substr($this->file->body, 0, 4) === "\x00\x00\x01\x00") | ||
242 | { | ||
243 | return 'image/vnd.microsoft.icon'; | ||
244 | } | ||
245 | else | ||
246 | { | ||
247 | return false; | ||
248 | } | ||
249 | } | ||
250 | |||
251 | /** | ||
252 | * Sniff HTML | ||
253 | * | ||
254 | * @return string Actual Content-Type | ||
255 | */ | ||
256 | public function feed_or_html() | ||
257 | { | ||
258 | $len = strlen($this->file->body); | ||
259 | $pos = strspn($this->file->body, "\x09\x0A\x0D\x20"); | ||
260 | |||
261 | while ($pos < $len) | ||
262 | { | ||
263 | switch ($this->file->body[$pos]) | ||
264 | { | ||
265 | case "\x09": | ||
266 | case "\x0A": | ||
267 | case "\x0D": | ||
268 | case "\x20": | ||
269 | $pos += strspn($this->file->body, "\x09\x0A\x0D\x20", $pos); | ||
270 | continue 2; | ||
271 | |||
272 | case '<': | ||
273 | $pos++; | ||
274 | break; | ||
275 | |||
276 | default: | ||
277 | return 'text/html'; | ||
278 | } | ||
279 | |||
280 | if (substr($this->file->body, $pos, 3) === '!--') | ||
281 | { | ||
282 | $pos += 3; | ||
283 | if ($pos < $len && ($pos = strpos($this->file->body, '-->', $pos)) !== false) | ||
284 | { | ||
285 | $pos += 3; | ||
286 | } | ||
287 | else | ||
288 | { | ||
289 | return 'text/html'; | ||
290 | } | ||
291 | } | ||
292 | elseif (substr($this->file->body, $pos, 1) === '!') | ||
293 | { | ||
294 | if ($pos < $len && ($pos = strpos($this->file->body, '>', $pos)) !== false) | ||
295 | { | ||
296 | $pos++; | ||
297 | } | ||
298 | else | ||
299 | { | ||
300 | return 'text/html'; | ||
301 | } | ||
302 | } | ||
303 | elseif (substr($this->file->body, $pos, 1) === '?') | ||
304 | { | ||
305 | if ($pos < $len && ($pos = strpos($this->file->body, '?>', $pos)) !== false) | ||
306 | { | ||
307 | $pos += 2; | ||
308 | } | ||
309 | else | ||
310 | { | ||
311 | return 'text/html'; | ||
312 | } | ||
313 | } | ||
314 | elseif (substr($this->file->body, $pos, 3) === 'rss' | ||
315 | || substr($this->file->body, $pos, 7) === 'rdf:RDF') | ||
316 | { | ||
317 | return 'application/rss+xml'; | ||
318 | } | ||
319 | elseif (substr($this->file->body, $pos, 4) === 'feed') | ||
320 | { | ||
321 | return 'application/atom+xml'; | ||
322 | } | ||
323 | else | ||
324 | { | ||
325 | return 'text/html'; | ||
326 | } | ||
327 | } | ||
328 | |||
329 | return 'text/html'; | ||
330 | } | ||
331 | } | ||
332 | |||