MediaWiki  1.23.2
IEContentAnalyzer.php
Go to the documentation of this file.
1 <?php
31  protected $baseTypeTable = array(
32  'ambiguous' /*1*/ => array(
33  'text/plain',
34  'application/octet-stream',
35  'application/x-netcdf', // [sic]
36  ),
37  'text' /*3*/ => array(
38  'text/richtext', 'image/x-bitmap', 'application/postscript', 'application/base64',
39  'application/macbinhex40', 'application/x-cdf', 'text/scriptlet'
40  ),
41  'binary' /*4*/ => array(
42  'application/pdf', 'audio/x-aiff', 'audio/basic', 'audio/wav', 'image/gif',
43  'image/pjpeg', 'image/jpeg', 'image/tiff', 'image/x-png', 'image/png', 'image/bmp',
44  'image/x-jg', 'image/x-art', 'image/x-emf', 'image/x-wmf', 'video/avi',
45  'video/x-msvideo', 'video/mpeg', 'application/x-compressed',
46  'application/x-zip-compressed', 'application/x-gzip-compressed', 'application/java',
47  'application/x-msdownload'
48  ),
49  'html' /*5*/ => array( 'text/html' ),
50  );
51 
55  protected $addedTypes = array(
56  'ie07' => array(
57  'text' => array( 'text/xml', 'application/xml' )
58  ),
59  );
60 
67  protected $registry = array(
68  '.323' => 'text/h323',
69  '.3g2' => 'video/3gpp2',
70  '.3gp' => 'video/3gpp',
71  '.3gp2' => 'video/3gpp2',
72  '.3gpp' => 'video/3gpp',
73  '.aac' => 'audio/aac',
74  '.ac3' => 'audio/ac3',
75  '.accda' => 'application/msaccess',
76  '.accdb' => 'application/msaccess',
77  '.accdc' => 'application/msaccess',
78  '.accde' => 'application/msaccess',
79  '.accdr' => 'application/msaccess',
80  '.accdt' => 'application/msaccess',
81  '.ade' => 'application/msaccess',
82  '.adp' => 'application/msaccess',
83  '.adts' => 'audio/aac',
84  '.ai' => 'application/postscript',
85  '.aif' => 'audio/aiff',
86  '.aifc' => 'audio/aiff',
87  '.aiff' => 'audio/aiff',
88  '.amc' => 'application/x-mpeg',
89  '.application' => 'application/x-ms-application',
90  '.asf' => 'video/x-ms-asf',
91  '.asx' => 'video/x-ms-asf',
92  '.au' => 'audio/basic',
93  '.avi' => 'video/avi',
94  '.bmp' => 'image/bmp',
95  '.caf' => 'audio/x-caf',
96  '.cat' => 'application/vnd.ms-pki.seccat',
97  '.cbo' => 'application/sha',
98  '.cdda' => 'audio/aiff',
99  '.cer' => 'application/x-x509-ca-cert',
100  '.conf' => 'text/plain',
101  '.crl' => 'application/pkix-crl',
102  '.crt' => 'application/x-x509-ca-cert',
103  '.css' => 'text/css',
104  '.csv' => 'application/vnd.ms-excel',
105  '.der' => 'application/x-x509-ca-cert',
106  '.dib' => 'image/bmp',
107  '.dif' => 'video/x-dv',
108  '.dll' => 'application/x-msdownload',
109  '.doc' => 'application/msword',
110  '.docm' => 'application/vnd.ms-word.document.macroEnabled.12',
111  '.docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
112  '.dot' => 'application/msword',
113  '.dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
114  '.dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
115  '.dv' => 'video/x-dv',
116  '.dwfx' => 'model/vnd.dwfx+xps',
117  '.edn' => 'application/vnd.adobe.edn',
118  '.eml' => 'message/rfc822',
119  '.eps' => 'application/postscript',
120  '.etd' => 'application/x-ebx',
121  '.exe' => 'application/x-msdownload',
122  '.fdf' => 'application/vnd.fdf',
123  '.fif' => 'application/fractals',
124  '.gif' => 'image/gif',
125  '.gsm' => 'audio/x-gsm',
126  '.hqx' => 'application/mac-binhex40',
127  '.hta' => 'application/hta',
128  '.htc' => 'text/x-component',
129  '.htm' => 'text/html',
130  '.html' => 'text/html',
131  '.htt' => 'text/webviewhtml',
132  '.hxa' => 'application/xml',
133  '.hxc' => 'application/xml',
134  '.hxd' => 'application/octet-stream',
135  '.hxe' => 'application/xml',
136  '.hxf' => 'application/xml',
137  '.hxh' => 'application/octet-stream',
138  '.hxi' => 'application/octet-stream',
139  '.hxk' => 'application/xml',
140  '.hxq' => 'application/octet-stream',
141  '.hxr' => 'application/octet-stream',
142  '.hxs' => 'application/octet-stream',
143  '.hxt' => 'application/xml',
144  '.hxv' => 'application/xml',
145  '.hxw' => 'application/octet-stream',
146  '.ico' => 'image/x-icon',
147  '.iii' => 'application/x-iphone',
148  '.ins' => 'application/x-internet-signup',
149  '.iqy' => 'text/x-ms-iqy',
150  '.isp' => 'application/x-internet-signup',
151  '.jfif' => 'image/jpeg',
152  '.jnlp' => 'application/x-java-jnlp-file',
153  '.jpe' => 'image/jpeg',
154  '.jpeg' => 'image/jpeg',
155  '.jpg' => 'image/jpeg',
156  '.jtx' => 'application/x-jtx+xps',
157  '.latex' => 'application/x-latex',
158  '.log' => 'text/plain',
159  '.m1v' => 'video/mpeg',
160  '.m2v' => 'video/mpeg',
161  '.m3u' => 'audio/x-mpegurl',
162  '.mac' => 'image/x-macpaint',
163  '.man' => 'application/x-troff-man',
164  '.mda' => 'application/msaccess',
165  '.mdb' => 'application/msaccess',
166  '.mde' => 'application/msaccess',
167  '.mfp' => 'application/x-shockwave-flash',
168  '.mht' => 'message/rfc822',
169  '.mhtml' => 'message/rfc822',
170  '.mid' => 'audio/mid',
171  '.midi' => 'audio/mid',
172  '.mod' => 'video/mpeg',
173  '.mov' => 'video/quicktime',
174  '.mp2' => 'video/mpeg',
175  '.mp2v' => 'video/mpeg',
176  '.mp3' => 'audio/mpeg',
177  '.mp4' => 'video/mp4',
178  '.mpa' => 'video/mpeg',
179  '.mpe' => 'video/mpeg',
180  '.mpeg' => 'video/mpeg',
181  '.mpf' => 'application/vnd.ms-mediapackage',
182  '.mpg' => 'video/mpeg',
183  '.mpv2' => 'video/mpeg',
184  '.mqv' => 'video/quicktime',
185  '.NMW' => 'application/nmwb',
186  '.nws' => 'message/rfc822',
187  '.odc' => 'text/x-ms-odc',
188  '.ols' => 'application/vnd.ms-publisher',
189  '.p10' => 'application/pkcs10',
190  '.p12' => 'application/x-pkcs12',
191  '.p7b' => 'application/x-pkcs7-certificates',
192  '.p7c' => 'application/pkcs7-mime',
193  '.p7m' => 'application/pkcs7-mime',
194  '.p7r' => 'application/x-pkcs7-certreqresp',
195  '.p7s' => 'application/pkcs7-signature',
196  '.pct' => 'image/pict',
197  '.pdf' => 'application/pdf',
198  '.pdx' => 'application/vnd.adobe.pdx',
199  '.pfx' => 'application/x-pkcs12',
200  '.pic' => 'image/pict',
201  '.pict' => 'image/pict',
202  '.pinstall' => 'application/x-picasa-detect',
203  '.pko' => 'application/vnd.ms-pki.pko',
204  '.png' => 'image/png',
205  '.pnt' => 'image/x-macpaint',
206  '.pntg' => 'image/x-macpaint',
207  '.pot' => 'application/vnd.ms-powerpoint',
208  '.potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
209  '.potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
210  '.ppa' => 'application/vnd.ms-powerpoint',
211  '.ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
212  '.pps' => 'application/vnd.ms-powerpoint',
213  '.ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
214  '.ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
215  '.ppt' => 'application/vnd.ms-powerpoint',
216  '.pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
217  '.pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
218  '.prf' => 'application/pics-rules',
219  '.ps' => 'application/postscript',
220  '.pub' => 'application/vnd.ms-publisher',
221  '.pwz' => 'application/vnd.ms-powerpoint',
222  '.py' => 'text/plain',
223  '.pyw' => 'text/plain',
224  '.qht' => 'text/x-html-insertion',
225  '.qhtm' => 'text/x-html-insertion',
226  '.qt' => 'video/quicktime',
227  '.qti' => 'image/x-quicktime',
228  '.qtif' => 'image/x-quicktime',
229  '.qtl' => 'application/x-quicktimeplayer',
230  '.rat' => 'application/rat-file',
231  '.rmf' => 'application/vnd.adobe.rmf',
232  '.rmi' => 'audio/mid',
233  '.rqy' => 'text/x-ms-rqy',
234  '.rtf' => 'application/msword',
235  '.sct' => 'text/scriptlet',
236  '.sd2' => 'audio/x-sd2',
237  '.sdp' => 'application/sdp',
238  '.shtml' => 'text/html',
239  '.sit' => 'application/x-stuffit',
240  '.sldm' => 'application/vnd.ms-powerpoint.slide.macroEnabled.12',
241  '.sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
242  '.slk' => 'application/vnd.ms-excel',
243  '.snd' => 'audio/basic',
244  '.so' => 'application/x-apachemodule',
245  '.sol' => 'text/plain',
246  '.sor' => 'text/plain',
247  '.spc' => 'application/x-pkcs7-certificates',
248  '.spl' => 'application/futuresplash',
249  '.sst' => 'application/vnd.ms-pki.certstore',
250  '.stl' => 'application/vnd.ms-pki.stl',
251  '.swf' => 'application/x-shockwave-flash',
252  '.thmx' => 'application/vnd.ms-officetheme',
253  '.tif' => 'image/tiff',
254  '.tiff' => 'image/tiff',
255  '.txt' => 'text/plain',
256  '.uls' => 'text/iuls',
257  '.vcf' => 'text/x-vcard',
258  '.vdx' => 'application/vnd.ms-visio.viewer',
259  '.vsd' => 'application/vnd.ms-visio.viewer',
260  '.vss' => 'application/vnd.ms-visio.viewer',
261  '.vst' => 'application/vnd.ms-visio.viewer',
262  '.vsx' => 'application/vnd.ms-visio.viewer',
263  '.vtx' => 'application/vnd.ms-visio.viewer',
264  '.wav' => 'audio/wav',
265  '.wax' => 'audio/x-ms-wax',
266  '.wbk' => 'application/msword',
267  '.wdp' => 'image/vnd.ms-photo',
268  '.wiz' => 'application/msword',
269  '.wm' => 'video/x-ms-wm',
270  '.wma' => 'audio/x-ms-wma',
271  '.wmd' => 'application/x-ms-wmd',
272  '.wmv' => 'video/x-ms-wmv',
273  '.wmx' => 'video/x-ms-wmx',
274  '.wmz' => 'application/x-ms-wmz',
275  '.wpl' => 'application/vnd.ms-wpl',
276  '.wsc' => 'text/scriptlet',
277  '.wvx' => 'video/x-ms-wvx',
278  '.xaml' => 'application/xaml+xml',
279  '.xbap' => 'application/x-ms-xbap',
280  '.xdp' => 'application/vnd.adobe.xdp+xml',
281  '.xfdf' => 'application/vnd.adobe.xfdf',
282  '.xht' => 'application/xhtml+xml',
283  '.xhtml' => 'application/xhtml+xml',
284  '.xla' => 'application/vnd.ms-excel',
285  '.xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
286  '.xlk' => 'application/vnd.ms-excel',
287  '.xll' => 'application/vnd.ms-excel',
288  '.xlm' => 'application/vnd.ms-excel',
289  '.xls' => 'application/vnd.ms-excel',
290  '.xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
291  '.xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
292  '.xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
293  '.xlt' => 'application/vnd.ms-excel',
294  '.xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
295  '.xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
296  '.xlw' => 'application/vnd.ms-excel',
297  '.xml' => 'text/xml',
298  '.xps' => 'application/vnd.ms-xpsdocument',
299  '.xsl' => 'text/xml',
300  );
301 
307  protected $versions = array( 'ie05', 'ie06', 'ie07', 'ie07.strict', 'ie07.nohtml' );
308 
312  protected $typeTable = array();
313 
315  function __construct() {
316  // Construct versioned type arrays from the base type array plus additions
317  $types = $this->baseTypeTable;
318  foreach ( $this->versions as $version ) {
319  if ( isset( $this->addedTypes[$version] ) ) {
320  foreach ( $this->addedTypes[$version] as $format => $addedTypes ) {
321  $types[$format] = array_merge( $types[$format], $addedTypes );
322  }
323  }
324  $this->typeTable[$version] = $types;
325  }
326  }
327 
338  public function getRealMimesFromData( $fileName, $chunk, $proposed ) {
339  $types = $this->getMimesFromData( $fileName, $chunk, $proposed );
340  $types = array_map( array( $this, 'translateMimeType' ), $types );
341  return $types;
342  }
343 
350  public function translateMimeType( $type ) {
351  static $table = array(
352  'image/pjpeg' => 'image/jpeg',
353  'image/x-png' => 'image/png',
354  'image/x-wmf' => 'application/x-msmetafile',
355  'image/bmp' => 'image/x-bmp',
356  'application/x-zip-compressed' => 'application/zip',
357  'application/x-compressed' => 'application/x-compress',
358  'application/x-gzip-compressed' => 'application/x-gzip',
359  'audio/mid' => 'audio/midi',
360  );
361  if ( isset( $table[$type] ) ) {
362  $type = $table[$type];
363  }
364  return $type;
365  }
366 
376  public function getMimesFromData( $fileName, $chunk, $proposed ) {
377  $types = array();
378  foreach ( $this->versions as $version ) {
379  $types[$version] = $this->getMimeTypeForVersion( $version, $fileName, $chunk, $proposed );
380  }
381  return $types;
382  }
383 
392  protected function getMimeTypeForVersion( $version, $fileName, $chunk, $proposed ) {
393  // Strip text after a semicolon
394  $semiPos = strpos( $proposed, ';' );
395  if ( $semiPos !== false ) {
396  $proposed = substr( $proposed, 0, $semiPos );
397  }
398 
399  $proposedFormat = $this->getDataFormat( $version, $proposed );
400  if ( $proposedFormat == 'unknown'
401  && $proposed != 'multipart/mixed'
402  && $proposed != 'multipart/x-mixed-replace' )
403  {
404  return $proposed;
405  }
406  if ( strval( $chunk ) === '' ) {
407  return $proposed;
408  }
409 
410  // Truncate chunk at 255 bytes
411  $chunk = substr( $chunk, 0, 255 );
412 
413  // IE does the Check*Headers() calls last, and instead does the following image
414  // type checks by directly looking for the magic numbers. What I do here should
415  // have the same effect since the magic number checks are identical in both cases.
416  $result = $this->sampleData( $version, $chunk );
417  $sampleFound = $result['found'];
418  $counters = $result['counters'];
419  $binaryType = $this->checkBinaryHeaders( $version, $chunk );
420  $textType = $this->checkTextHeaders( $version, $chunk );
421 
422  if ( $proposed == 'text/html' && isset( $sampleFound['html'] ) ) {
423  return 'text/html';
424  }
425  if ( $proposed == 'image/gif' && $binaryType == 'image/gif' ) {
426  return 'image/gif';
427  }
428  if ( ( $proposed == 'image/pjpeg' || $proposed == 'image/jpeg' )
429  && $binaryType == 'image/pjpeg' )
430  {
431  return $proposed;
432  }
433  // PNG check added in IE 7
434  if ( $version >= 'ie07'
435  && ( $proposed == 'image/x-png' || $proposed == 'image/png' )
436  && $binaryType == 'image/x-png' )
437  {
438  return $proposed;
439  }
440 
441  // CDF was removed in IE 7 so it won't be in $sampleFound for later versions
442  if ( isset( $sampleFound['cdf'] ) ) {
443  return 'application/x-cdf';
444  }
445 
446  // RSS and Atom were added in IE 7 so they won't be in $sampleFound for
447  // previous versions
448  if ( isset( $sampleFound['rss'] ) ) {
449  return 'application/rss+xml';
450  }
451  if ( isset( $sampleFound['rdf-tag'] )
452  && isset( $sampleFound['rdf-url'] )
453  && isset( $sampleFound['rdf-purl'] ) )
454  {
455  return 'application/rss+xml';
456  }
457  if ( isset( $sampleFound['atom'] ) ) {
458  return 'application/atom+xml';
459  }
460 
461  if ( isset( $sampleFound['xml'] ) ) {
462  // TODO: I'm not sure under what circumstances this flag is enabled
463  if ( strpos( $version, 'strict' ) !== false ) {
464  if ( $proposed == 'text/html' || $proposed == 'text/xml' ) {
465  return 'text/xml';
466  }
467  } else {
468  return 'text/xml';
469  }
470  }
471  if ( isset( $sampleFound['html'] ) ) {
472  // TODO: I'm not sure under what circumstances this flag is enabled
473  if ( strpos( $version, 'nohtml' ) !== false ) {
474  if ( $proposed == 'text/plain' ) {
475  return 'text/html';
476  }
477  } else {
478  return 'text/html';
479  }
480  }
481  if ( isset( $sampleFound['xbm'] ) ) {
482  return 'image/x-bitmap';
483  }
484  if ( isset( $sampleFound['binhex'] ) ) {
485  return 'application/macbinhex40';
486  }
487  if ( isset( $sampleFound['scriptlet'] ) ) {
488  if ( strpos( $version, 'strict' ) !== false ) {
489  if ( $proposed == 'text/plain' || $proposed == 'text/scriptlet' ) {
490  return 'text/scriptlet';
491  }
492  } else {
493  return 'text/scriptlet';
494  }
495  }
496 
497  // Freaky heuristics to determine if the data is text or binary
498  // The heuristic is of course broken for non-ASCII text
499  if ( $counters['ctrl'] != 0 && ( $counters['ff'] + $counters['low'] )
500  < ( $counters['ctrl'] + $counters['high'] ) * 16 )
501  {
502  $kindOfBinary = true;
503  $type = $binaryType ? $binaryType : $textType;
504  if ( $type === false ) {
505  $type = 'application/octet-stream';
506  }
507  } else {
508  $kindOfBinary = false;
509  $type = $textType ? $textType : $binaryType;
510  if ( $type === false ) {
511  $type = 'text/plain';
512  }
513  }
514 
515  // Check if the output format is ambiguous
516  // This generally means that detection failed, real types aren't ambiguous
517  $detectedFormat = $this->getDataFormat( $version, $type );
518  if ( $detectedFormat != 'ambiguous' ) {
519  return $type;
520  }
521 
522  if ( $proposedFormat != 'ambiguous' ) {
523  // FormatAgreesWithData()
524  if ( $proposedFormat == 'text' && !$kindOfBinary ) {
525  return $proposed;
526  }
527  if ( $proposedFormat == 'binary' && $kindOfBinary ) {
528  return $proposed;
529  }
530  if ( $proposedFormat == 'html' ) {
531  return $proposed;
532  }
533  }
534 
535  // Find a MIME type by searching the registry for the file extension.
536  $dotPos = strrpos( $fileName, '.' );
537  if ( $dotPos === false ) {
538  return $type;
539  }
540  $ext = substr( $fileName, $dotPos );
541  if ( isset( $this->registry[$ext] ) ) {
542  return $this->registry[$ext];
543  }
544 
545  // TODO: If the extension has an application registered to it, IE will return
546  // application/octet-stream. We'll skip that, so we could erroneously
547  // return text/plain or application/x-netcdf where application/octet-stream
548  // would be correct.
549 
550  return $type;
551  }
552 
560  private function checkTextHeaders( $version, $chunk ) {
561  $chunk2 = substr( $chunk, 0, 2 );
562  $chunk4 = substr( $chunk, 0, 4 );
563  $chunk5 = substr( $chunk, 0, 5 );
564  if ( $chunk4 == '%PDF' ) {
565  return 'application/pdf';
566  }
567  if ( $chunk2 == '%!' ) {
568  return 'application/postscript';
569  }
570  if ( $chunk5 == '{\\rtf' ) {
571  return 'text/richtext';
572  }
573  if ( $chunk5 == 'begin' ) {
574  return 'application/base64';
575  }
576  return false;
577  }
578 
586  private function checkBinaryHeaders( $version, $chunk ) {
587  $chunk2 = substr( $chunk, 0, 2 );
588  $chunk3 = substr( $chunk, 0, 3 );
589  $chunk4 = substr( $chunk, 0, 4 );
590  $chunk5 = substr( $chunk, 0, 5 );
591  $chunk5uc = strtoupper( $chunk5 );
592  $chunk8 = substr( $chunk, 0, 8 );
593  if ( $chunk5uc == 'GIF87' || $chunk5uc == 'GIF89' ) {
594  return 'image/gif';
595  }
596  if ( $chunk2 == "\xff\xd8" ) {
597  return 'image/pjpeg'; // actually plain JPEG but this is what IE returns
598  }
599 
600  if ( $chunk2 == 'BM'
601  && substr( $chunk, 6, 2 ) == "\000\000"
602  && substr( $chunk, 8, 2 ) == "\000\000" )
603  {
604  return 'image/bmp'; // another non-standard MIME
605  }
606  if ( $chunk4 == 'RIFF'
607  && substr( $chunk, 8, 4 ) == 'WAVE' )
608  {
609  return 'audio/wav';
610  }
611  // These were integer literals in IE
612  // Perhaps the author was not sure what the target endianness was
613  if ( $chunk4 == ".sd\000"
614  || $chunk4 == ".snd"
615  || $chunk4 == "\000ds."
616  || $chunk4 == "dns." )
617  {
618  return 'audio/basic';
619  }
620  if ( $chunk3 == "MM\000" ) {
621  return 'image/tiff';
622  }
623  if ( $chunk2 == 'MZ' ) {
624  return 'application/x-msdownload';
625  }
626  if ( $chunk8 == "\x89PNG\x0d\x0a\x1a\x0a" ) {
627  return 'image/x-png'; // [sic]
628  }
629  if ( strlen( $chunk ) >= 5 ) {
630  $byte2 = ord( $chunk[2] );
631  $byte4 = ord( $chunk[4] );
632  if ( $byte2 >= 3 && $byte2 <= 31 && $byte4 == 0 && $chunk2 == 'JG' ) {
633  return 'image/x-jg';
634  }
635  }
636  // More endian confusion?
637  if ( $chunk4 == 'MROF' ) {
638  return 'audio/x-aiff';
639  }
640  $chunk4_8 = substr( $chunk, 8, 4 );
641  if ( $chunk4 == 'FORM' && ( $chunk4_8 == 'AIFF' || $chunk4_8 == 'AIFC' ) ) {
642  return 'audio/x-aiff';
643  }
644  if ( $chunk4 == 'RIFF' && $chunk4_8 == 'AVI ' ) {
645  return 'video/avi';
646  }
647  if ( $chunk4 == "\x00\x00\x01\xb3" || $chunk4 == "\x00\x00\x01\xba" ) {
648  return 'video/mpeg';
649  }
650  if ( $chunk4 == "\001\000\000\000"
651  && substr( $chunk, 40, 4 ) == ' EMF' )
652  {
653  return 'image/x-emf';
654  }
655  if ( $chunk4 == "\xd7\xcd\xc6\x9a" ) {
656  return 'image/x-wmf';
657  }
658  if ( $chunk4 == "\xca\xfe\xba\xbe" ) {
659  return 'application/java';
660  }
661  if ( $chunk2 == 'PK' ) {
662  return 'application/x-zip-compressed';
663  }
664  if ( $chunk2 == "\x1f\x9d" ) {
665  return 'application/x-compressed';
666  }
667  if ( $chunk2 == "\x1f\x8b" ) {
668  return 'application/x-gzip-compressed';
669  }
670  // Skip redundant check for ZIP
671  if ( $chunk5 == "MThd\000" ) {
672  return 'audio/mid';
673  }
674  if ( $chunk4 == '%PDF' ) {
675  return 'application/pdf';
676  }
677  return false;
678  }
679 
687  protected function sampleData( $version, $chunk ) {
688  $found = array();
689  $counters = array(
690  'ctrl' => 0,
691  'high' => 0,
692  'low' => 0,
693  'lf' => 0,
694  'cr' => 0,
695  'ff' => 0
696  );
697  $htmlTags = array(
698  'html',
699  'head',
700  'title',
701  'body',
702  'script',
703  'a href',
704  'pre',
705  'img',
706  'plaintext',
707  'table'
708  );
709  $rdfUrl = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
710  $rdfPurl = 'http://purl.org/rss/1.0/';
711  $xbmMagic1 = '#define';
712  $xbmMagic2 = '_width';
713  $xbmMagic3 = '_bits';
714  $binhexMagic = 'converted with BinHex';
715 
716  for ( $offset = 0; $offset < strlen( $chunk ); $offset++ ) {
717  $curChar = $chunk[$offset];
718  if ( $curChar == "\x0a" ) {
719  $counters['lf']++;
720  continue;
721  } elseif ( $curChar == "\x0d" ) {
722  $counters['cr']++;
723  continue;
724  } elseif ( $curChar == "\x0c" ) {
725  $counters['ff']++;
726  continue;
727  } elseif ( $curChar == "\t" ) {
728  $counters['low']++;
729  continue;
730  } elseif ( ord( $curChar ) < 32 ) {
731  $counters['ctrl']++;
732  continue;
733  } elseif ( ord( $curChar ) >= 128 ) {
734  $counters['high']++;
735  continue;
736  }
737 
738  $counters['low']++;
739  if ( $curChar == '<' ) {
740  // XML
741  $remainder = substr( $chunk, $offset + 1 );
742  if ( !strncasecmp( $remainder, '?XML', 4 ) ) {
743  $nextChar = substr( $chunk, $offset + 5, 1 );
744  if ( $nextChar == ':' || $nextChar == ' ' || $nextChar == "\t" ) {
745  $found['xml'] = true;
746  }
747  }
748  // Scriptlet (JSP)
749  if ( !strncasecmp( $remainder, 'SCRIPTLET', 9 ) ) {
750  $found['scriptlet'] = true;
751  break;
752  }
753  // HTML
754  foreach ( $htmlTags as $tag ) {
755  if ( !strncasecmp( $remainder, $tag, strlen( $tag ) ) ) {
756  $found['html'] = true;
757  }
758  }
759  // Skip broken check for additional tags (HR etc.)
760 
761  // CHANNEL replaced by RSS, RDF and FEED in IE 7
762  if ( $version < 'ie07' ) {
763  if ( !strncasecmp( $remainder, 'CHANNEL', 7 ) ) {
764  $found['cdf'] = true;
765  }
766  } else {
767  // RSS
768  if ( !strncasecmp( $remainder, 'RSS', 3 ) ) {
769  $found['rss'] = true;
770  break; // return from SampleData
771  }
772  if ( !strncasecmp( $remainder, 'rdf:RDF', 7 ) ) {
773  $found['rdf-tag'] = true;
774  // no break
775  }
776  if ( !strncasecmp( $remainder, 'FEED', 4 ) ) {
777  $found['atom'] = true;
778  break;
779  }
780  }
781  continue;
782  }
783  // Skip broken check for -->
784 
785  // RSS URL checks
786  // For some reason both URLs must appear before it is recognised
787  $remainder = substr( $chunk, $offset );
788  if ( !strncasecmp( $remainder, $rdfUrl, strlen( $rdfUrl ) ) ) {
789  $found['rdf-url'] = true;
790  if ( isset( $found['rdf-tag'] )
791  && isset( $found['rdf-purl'] ) ) // [sic]
792  {
793  break;
794  }
795  continue;
796  }
797 
798  if ( !strncasecmp( $remainder, $rdfPurl, strlen( $rdfPurl ) ) ) {
799  if ( isset( $found['rdf-tag'] )
800  && isset( $found['rdf-url'] ) ) // [sic]
801  {
802  break;
803  }
804  continue;
805  }
806 
807  // XBM checks
808  if ( !strncasecmp( $remainder, $xbmMagic1, strlen( $xbmMagic1 ) ) ) {
809  $found['xbm1'] = true;
810  continue;
811  }
812  if ( $curChar == '_' ) {
813  if ( isset( $found['xbm2'] ) ) {
814  if ( !strncasecmp( $remainder, $xbmMagic3, strlen( $xbmMagic3 ) ) ) {
815  $found['xbm'] = true;
816  break;
817  }
818  } elseif ( isset( $found['xbm1'] ) ) {
819  if ( !strncasecmp( $remainder, $xbmMagic2, strlen( $xbmMagic2 ) ) ) {
820  $found['xbm2'] = true;
821  }
822  }
823  }
824 
825  // BinHex
826  if ( !strncmp( $remainder, $binhexMagic, strlen( $binhexMagic ) ) ) {
827  $found['binhex'] = true;
828  }
829  }
830  return array( 'found' => $found, 'counters' => $counters );
831  }
832 
838  protected function getDataFormat( $version, $type ) {
839  $types = $this->typeTable[$version];
840  if ( $type == '(null)' || strval( $type ) === '' ) {
841  return 'ambiguous';
842  }
843  foreach ( $types as $format => $list ) {
844  if ( in_array( $type, $list ) ) {
845  return $format;
846  }
847  }
848  return 'unknown';
849  }
850 }
$result
The index of the header message $result[1]=The index of the body text message $result[2 through n]=Parameters passed to body text message. Please note the header message cannot receive/use parameters. 'ImportHandleLogItemXMLTag':When parsing a XML tag in a log item. $reader:XMLReader object $logInfo:Array of information Return false to stop further processing of the tag 'ImportHandlePageXMLTag':When parsing a XML tag in a page. $reader:XMLReader object $pageInfo:Array of information Return false to stop further processing of the tag 'ImportHandleRevisionXMLTag':When parsing a XML tag in a page revision. $reader:XMLReader object $pageInfo:Array of page information $revisionInfo:Array of revision information Return false to stop further processing of the tag 'ImportHandleToplevelXMLTag':When parsing a top level XML tag. $reader:XMLReader object Return false to stop further processing of the tag 'ImportHandleUploadXMLTag':When parsing a XML tag in a file upload. $reader:XMLReader object $revisionInfo:Array of information Return false to stop further processing of the tag 'InfoAction':When building information to display on the action=info page. $context:IContextSource object & $pageInfo:Array of information 'InitializeArticleMaybeRedirect':MediaWiki check to see if title is a redirect. $title:Title object for the current page $request:WebRequest $ignoreRedirect:boolean to skip redirect check $target:Title/string of redirect target $article:Article object 'InterwikiLoadPrefix':When resolving if a given prefix is an interwiki or not. Return true without providing an interwiki to continue interwiki search. $prefix:interwiki prefix we are looking for. & $iwData:output array describing the interwiki with keys iw_url, iw_local, iw_trans and optionally iw_api and iw_wikiid. 'InternalParseBeforeSanitize':during Parser 's internalParse method just before the parser removes unwanted/dangerous HTML tags and after nowiki/noinclude/includeonly/onlyinclude and other processings. Ideal for syntax-extensions after template/parser function execution which respect nowiki and HTML-comments. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InternalParseBeforeLinks':during Parser 's internalParse method before links but after nowiki/noinclude/includeonly/onlyinclude and other processings. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InvalidateEmailComplete':Called after a user 's email has been invalidated successfully. $user:user(object) whose email is being invalidated 'IRCLineURL':When constructing the URL to use in an IRC notification. Callee may modify $url and $query, URL will be constructed as $url . $query & $url:URL to index.php & $query:Query string $rc:RecentChange object that triggered url generation 'IsFileCacheable':Override the result of Article::isFileCacheable()(if true) $article:article(object) being checked 'IsTrustedProxy':Override the result of wfIsTrustedProxy() $ip:IP being check $result:Change this value to override the result of wfIsTrustedProxy() 'IsUploadAllowedFromUrl':Override the result of UploadFromUrl::isAllowedUrl() $url:URL used to upload from & $allowed:Boolean indicating if uploading is allowed for given URL 'isValidEmailAddr':Override the result of User::isValidEmailAddr(), for instance to return false if the domain name doesn 't match your organization. $addr:The e-mail address entered by the user & $result:Set this and return false to override the internal checks 'isValidPassword':Override the result of User::isValidPassword() $password:The password entered by the user & $result:Set this and return false to override the internal checks $user:User the password is being validated for 'Language::getMessagesFileName':$code:The language code or the language we 're looking for a messages file for & $file:The messages file path, you can override this to change the location. 'LanguageGetNamespaces':Provide custom ordering for namespaces or remove namespaces. Do not use this hook to add namespaces. Use CanonicalNamespaces for that. & $namespaces:Array of namespaces indexed by their numbers 'LanguageGetMagic':DEPRECATED, use $magicWords in a file listed in $wgExtensionMessagesFiles instead. Use this to define synonyms of magic words depending of the language $magicExtensions:associative array of magic words synonyms $lang:language code(string) 'LanguageGetSpecialPageAliases':DEPRECATED, use $specialPageAliases in a file listed in $wgExtensionMessagesFiles instead. Use to define aliases of special pages names depending of the language $specialPageAliases:associative array of magic words synonyms $lang:language code(string) 'LanguageGetTranslatedLanguageNames':Provide translated language names. & $names:array of language code=> language name $code language of the preferred translations 'LanguageLinks':Manipulate a page 's language links. This is called in various places to allow extensions to define the effective language links for a page. $title:The page 's Title. & $links:Associative array mapping language codes to prefixed links of the form "language:title". & $linkFlags:Associative array mapping prefixed links to arrays of flags. Currently unused, but planned to provide support for marking individual language links in the UI, e.g. for featured articles. 'LinkBegin':Used when generating internal and interwiki links in Linker::link(), before processing starts. Return false to skip default processing and return $ret. See documentation for Linker::link() for details on the expected meanings of parameters. $skin:the Skin object $target:the Title that the link is pointing to & $html:the contents that the< a > tag should have(raw HTML) $result
Definition: hooks.txt:1528
IEContentAnalyzer\checkBinaryHeaders
checkBinaryHeaders( $version, $chunk)
Check for binary headers at the start of the chunk Confirmed same in 5 and 7.
Definition: IEContentAnalyzer.php:586
php
skin txt MediaWiki includes four core it has been set as the default in MediaWiki since the replacing Monobook it had been been the default skin since before being replaced by Vector largely rewritten in while keeping its appearance Several legacy skins were removed in the as the burden of supporting them became too heavy to bear Those in etc for skin dependent CSS etc for skin dependent JavaScript These can also be customised on a per user by etc This feature has led to a wide variety of user styles becoming that gallery is a good place to ending in php
Definition: skin.txt:62
IEContentAnalyzer\sampleData
sampleData( $version, $chunk)
Do heuristic checks on the bulk of the data sample.
Definition: IEContentAnalyzer.php:687
IEContentAnalyzer\$addedTypes
$addedTypes
Changes to the type table in later versions of IE.
Definition: IEContentAnalyzer.php:55
IEContentAnalyzer\getRealMimesFromData
getRealMimesFromData( $fileName, $chunk, $proposed)
Get the MIME types from getMimesFromData(), but convert the result from IE's idiosyncratic private ty...
Definition: IEContentAnalyzer.php:338
IEContentAnalyzer\$typeTable
$typeTable
Type table with versions expanded.
Definition: IEContentAnalyzer.php:312
IEContentAnalyzer\getMimesFromData
getMimesFromData( $fileName, $chunk, $proposed)
Get the untranslated MIME types for all known versions.
Definition: IEContentAnalyzer.php:376
array
the array() calling protocol came about after MediaWiki 1.4rc1.
List of Api Query prop modules.
IEContentAnalyzer\$baseTypeTable
$baseTypeTable
Relevant data taken from the type table in IE 5.
Definition: IEContentAnalyzer.php:31
IEContentAnalyzer\$registry
$registry
An approximation of the "Content Type" values in HKEY_CLASSES_ROOT in a typical Windows installation.
Definition: IEContentAnalyzer.php:67
IEContentAnalyzer\checkTextHeaders
checkTextHeaders( $version, $chunk)
Check for text headers at the start of the chunk Confirmed same in 5 and 7.
Definition: IEContentAnalyzer.php:560
IEContentAnalyzer
This class simulates Microsoft Internet Explorer's terribly broken and insecure MIME type detection a...
Definition: IEContentAnalyzer.php:27
IEContentAnalyzer\getMimeTypeForVersion
getMimeTypeForVersion( $version, $fileName, $chunk, $proposed)
Get the MIME type for a given named version.
Definition: IEContentAnalyzer.php:392
$version
$version
Definition: parserTests.php:86
IEContentAnalyzer\translateMimeType
translateMimeType( $type)
Translate a MIME type from IE's idiosyncratic private types into more commonly understood type string...
Definition: IEContentAnalyzer.php:350
IEContentAnalyzer\getDataFormat
getDataFormat( $version, $type)
Definition: IEContentAnalyzer.php:838
$ext
$ext
Definition: NoLocalSettings.php:34
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:9
IEContentAnalyzer\__construct
__construct()
constructor
Definition: IEContentAnalyzer.php:315
IEContentAnalyzer\$versions
$versions
IE versions which have been analysed to bring you this class, and for which some substantive differen...
Definition: IEContentAnalyzer.php:307
$type
$type
Definition: testCompression.php:46