MediaWiki  1.28.1
XMPValidate.php
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1 <?php
26 
46 class XMPValidate implements LoggerAwareInterface {
47 
51  private $logger;
52 
53  public function __construct( LoggerInterface $logger ) {
54  $this->setLogger( $logger );
55  }
56 
57  public function setLogger( LoggerInterface $logger ) {
58  $this->logger = $logger;
59  }
67  public function validateBoolean( $info, &$val, $standalone ) {
68  if ( !$standalone ) {
69  // this only validates standalone properties, not arrays, etc
70  return;
71  }
72  if ( $val !== 'True' && $val !== 'False' ) {
73  $this->logger->info( __METHOD__ . " Expected True or False but got $val" );
74  $val = null;
75  }
76  }
77 
85  public function validateRational( $info, &$val, $standalone ) {
86  if ( !$standalone ) {
87  // this only validates standalone properties, not arrays, etc
88  return;
89  }
90  if ( !preg_match( '/^(?:-?\d+)\/(?:\d+[1-9]|[1-9]\d*)$/D', $val ) ) {
91  $this->logger->info( __METHOD__ . " Expected rational but got $val" );
92  $val = null;
93  }
94  }
95 
106  public function validateRating( $info, &$val, $standalone ) {
107  if ( !$standalone ) {
108  // this only validates standalone properties, not arrays, etc
109  return;
110  }
111  if ( !preg_match( '/^[-+]?\d*(?:\.?\d*)$/D', $val )
112  || !is_numeric( $val )
113  ) {
114  $this->logger->info( __METHOD__ . " Expected rating but got $val" );
115  $val = null;
116 
117  return;
118  } else {
119  $nVal = (float)$val;
120  if ( $nVal < 0 ) {
121  // We do < 0 here instead of < -1 here, since
122  // the values between 0 and -1 are also illegal
123  // as -1 is meant as a special reject rating.
124  $this->logger->info( __METHOD__ . " Rating too low, setting to -1 (Rejected)" );
125  $val = '-1';
126 
127  return;
128  }
129  if ( $nVal > 5 ) {
130  $this->logger->info( __METHOD__ . " Rating too high, setting to 5" );
131  $val = '5';
132 
133  return;
134  }
135  }
136  }
137 
145  public function validateInteger( $info, &$val, $standalone ) {
146  if ( !$standalone ) {
147  // this only validates standalone properties, not arrays, etc
148  return;
149  }
150  if ( !preg_match( '/^[-+]?\d+$/D', $val ) ) {
151  $this->logger->info( __METHOD__ . " Expected integer but got $val" );
152  $val = null;
153  }
154  }
155 
164  public function validateClosed( $info, &$val, $standalone ) {
165  if ( !$standalone ) {
166  // this only validates standalone properties, not arrays, etc
167  return;
168  }
169 
170  // check if its in a numeric range
171  $inRange = false;
172  if ( isset( $info['rangeLow'] )
173  && isset( $info['rangeHigh'] )
174  && is_numeric( $val )
175  && ( intval( $val ) <= $info['rangeHigh'] )
176  && ( intval( $val ) >= $info['rangeLow'] )
177  ) {
178  $inRange = true;
179  }
180 
181  if ( !isset( $info['choices'][$val] ) && !$inRange ) {
182  $this->logger->info( __METHOD__ . " Expected closed choice, but got $val" );
183  $val = null;
184  }
185  }
186 
194  public function validateFlash( $info, &$val, $standalone ) {
195  if ( $standalone ) {
196  // this only validates flash structs, not individual properties
197  return;
198  }
199  if ( !( isset( $val['Fired'] )
200  && isset( $val['Function'] )
201  && isset( $val['Mode'] )
202  && isset( $val['RedEyeMode'] )
203  && isset( $val['Return'] )
204  ) ) {
205  $this->logger->info( __METHOD__ . " Flash structure did not have all the required components" );
206  $val = null;
207  } else {
208  $val = ( "\0" | ( $val['Fired'] === 'True' )
209  | ( intval( $val['Return'] ) << 1 )
210  | ( intval( $val['Mode'] ) << 3 )
211  | ( ( $val['Function'] === 'True' ) << 5 )
212  | ( ( $val['RedEyeMode'] === 'True' ) << 6 ) );
213  }
214  }
215 
229  public function validateLangCode( $info, &$val, $standalone ) {
230  if ( !$standalone ) {
231  // this only validates standalone properties, not arrays, etc
232  return;
233  }
234  if ( !preg_match( '/^[-A-Za-z0-9]{2,}$/D', $val ) ) {
235  // this is a rather naive check.
236  $this->logger->info( __METHOD__ . " Expected Lang code but got $val" );
237  $val = null;
238  }
239  }
240 
258  public function validateDate( $info, &$val, $standalone ) {
259  if ( !$standalone ) {
260  // this only validates standalone properties, not arrays, etc
261  return;
262  }
263  $res = [];
264  // @codingStandardsIgnoreStart Long line that cannot be broken
265  if ( !preg_match(
266  /* ahh! scary regex... */
267  '/^([0-3]\d{3})(?:-([01]\d)(?:-([0-3]\d)(?:T([0-2]\d):([0-6]\d)(?::([0-6]\d)(?:\.\d+)?)?([-+]\d{2}:\d{2}|Z)?)?)?)?$/D',
268  $val, $res )
269  ) {
270  // @codingStandardsIgnoreEnd
271 
272  $this->logger->info( __METHOD__ . " Expected date but got $val" );
273  $val = null;
274  } else {
275  /*
276  * $res is formatted as follows:
277  * 0 -> full date.
278  * 1 -> year, 2-> month, 3-> day, 4-> hour, 5-> minute, 6->second
279  * 7-> Timezone specifier (Z or something like +12:30 )
280  * many parts are optional, some aren't. For example if you specify
281  * minute, you must specify hour, day, month, and year but not second or TZ.
282  */
283 
284  /*
285  * First of all, if year = 0000, Something is wrongish,
286  * so don't extract. This seems to happen when
287  * some programs convert between metadata formats.
288  */
289  if ( $res[1] === '0000' ) {
290  $this->logger->info( __METHOD__ . " Invalid date (year 0): $val" );
291  $val = null;
292 
293  return;
294  }
295 
296  if ( !isset( $res[4] ) ) { // hour
297  // just have the year month day (if that)
298  $val = $res[1];
299  if ( isset( $res[2] ) ) {
300  $val .= ':' . $res[2];
301  }
302  if ( isset( $res[3] ) ) {
303  $val .= ':' . $res[3];
304  }
305 
306  return;
307  }
308 
309  if ( !isset( $res[7] ) || $res[7] === 'Z' ) {
310  // if hour is set, then minute must also be or regex above will fail.
311  $val = $res[1] . ':' . $res[2] . ':' . $res[3]
312  . ' ' . $res[4] . ':' . $res[5];
313  if ( isset( $res[6] ) && $res[6] !== '' ) {
314  $val .= ':' . $res[6];
315  }
316 
317  return;
318  }
319 
320  // Extra check for empty string necessary due to TZ but no second case.
321  $stripSeconds = false;
322  if ( !isset( $res[6] ) || $res[6] === '' ) {
323  $res[6] = '00';
324  $stripSeconds = true;
325  }
326 
327  // Do timezone processing. We've already done the case that tz = Z.
328 
329  // We know that if we got to this step, year, month day hour and min must be set
330  // by virtue of regex not failing.
331 
333  $res[1] . $res[2] . $res[3] . $res[4] . $res[5] . $res[6]
334  );
335  $offset = intval( substr( $res[7], 1, 2 ) ) * 60 * 60;
336  $offset += intval( substr( $res[7], 4, 2 ) ) * 60;
337  if ( substr( $res[7], 0, 1 ) === '-' ) {
338  $offset = -$offset;
339  }
340  $val = ConvertibleTimestamp::convert( TS_EXIF, $unix + $offset );
341 
342  if ( $stripSeconds ) {
343  // If seconds weren't specified, remove the trailing ':00'.
344  $val = substr( $val, 0, -3 );
345  }
346  }
347  }
348 
361  public function validateGPS( $info, &$val, $standalone ) {
362  if ( !$standalone ) {
363  return;
364  }
365 
366  $m = [];
367  if ( preg_match(
368  '/(\d{1,3}),(\d{1,2}),(\d{1,2})([NWSE])/D',
369  $val, $m )
370  ) {
371  $coord = intval( $m[1] );
372  $coord += intval( $m[2] ) * ( 1 / 60 );
373  $coord += intval( $m[3] ) * ( 1 / 3600 );
374  if ( $m[4] === 'S' || $m[4] === 'W' ) {
375  $coord = -$coord;
376  }
377  $val = $coord;
378 
379  return;
380  } elseif ( preg_match(
381  '/(\d{1,3}),(\d{1,2}(?:.\d*)?)([NWSE])/D',
382  $val, $m )
383  ) {
384  $coord = intval( $m[1] );
385  $coord += floatval( $m[2] ) * ( 1 / 60 );
386  if ( $m[3] === 'S' || $m[3] === 'W' ) {
387  $coord = -$coord;
388  }
389  $val = $coord;
390 
391  return;
392  } else {
393  $this->logger->info( __METHOD__
394  . " Expected GPSCoordinate, but got $val." );
395  $val = null;
396 
397  return;
398  }
399  }
400 }
setLogger(LoggerInterface $logger)
Definition: XMPValidate.php:57
validateFlash($info, &$val, $standalone)
function to validate and modify flash structure
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
LoggerInterface $logger
Definition: XMPValidate.php:51
validateInteger($info, &$val, $standalone)
function to validate integers
__construct(LoggerInterface $logger)
Definition: XMPValidate.php:53
const TS_UNIX
Unix time - the number of seconds since 1970-01-01 00:00:00 UTC.
Definition: defines.php:6
validateLangCode($info, &$val, $standalone)
function to validate LangCode properties ( en-GB, etc )
const TS_EXIF
An Exif timestamp (YYYY:MM:DD HH:MM:SS)
Definition: defines.php:37
validateClosed($info, &$val, $standalone)
function to validate properties with a fixed number of allowed choices.
$res
Definition: database.txt:21
validateRational($info, &$val, $standalone)
function to validate rational properties ( 12/10 )
Definition: XMPValidate.php:85
This contains some static methods for validating XMP properties.
Definition: XMPValidate.php:46
validateRating($info, &$val, $standalone)
function to validate rating properties -1, 0-5
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
static convert($style=TS_UNIX, $ts)
Convert a timestamp string to a given format.
validateBoolean($info, &$val, $standalone)
Function to validate boolean properties ( True or False )
Definition: XMPValidate.php:67
validateDate($info, &$val, $standalone)
function to validate date properties, and convert to (partial) Exif format.
validateGPS($info, &$val, $standalone)
function to validate, and more importantly translate the XMP DMS form of gps coords to the decimal fo...