includes/filerepo/ArchivedFile.php

   1 <?php
   2
   3 /**
   4  * @ingroup Media
   5  */
   6 class ArchivedFile
   7 {
   8         /**#@+
   9          * @private
  10          */
  11         var $id, # filearchive row ID
  12                 $title, # image title
  13                 $name, # image name
  14                 $group, # FileStore storage group
  15                 $key, # FileStore sha1 key
  16                 $size, # file dimensions
  17                 $bits,  # size in bytes
  18                 $width, # width
  19                 $height, # height
  20                 $metadata, # metadata string
  21                 $mime, # mime type
  22                 $media_type, # media type
  23                 $description, # upload description
  24                 $user, # user ID of uploader
  25                 $user_text, # user name of uploader
  26                 $timestamp, # time of upload
  27                 $dataLoaded, # Whether or not all this has been loaded from the database (loadFromXxx)
  28                 $deleted; # Bitfield akin to rev_deleted
  29
  30         /**#@-*/
  31
  32         function ArchivedFile( $title, $id=0, $key='' ) {
  33                 $this->id = -1;
  34                 $this->title = false;
  35                 $this->name = false;
  36                 $this->group = 'deleted'; // needed for direct use of constructor
  37                 $this->key = '';
  38                 $this->size = 0;
  39                 $this->bits = 0;
  40                 $this->width = 0;
  41                 $this->height = 0;
  42                 $this->metadata = '';
  43                 $this->mime = "unknown/unknown";
  44                 $this->media_type = '';
  45                 $this->description = '';
  46                 $this->user = 0;
  47                 $this->user_text = '';
  48                 $this->timestamp = null;
  49                 $this->deleted = 0;
  50                 $this->dataLoaded = false;
  51                 $this->exists = false;
  52
  53                 if( is_object($title) ) {
  54                         $this->title = $title;
  55                         $this->name = $title->getDBkey();
  56                 }
  57
  58                 if ($id)
  59                         $this->id = $id;
  60
  61                 if ($key)
  62                         $this->key = $key;
  63
  64                 if (!$id && !$key && !is_object($title))
  65                         throw new MWException( "No specifications provided to ArchivedFile constructor." );
  66         }
  67
  68         /**
  69          * Loads a file object from the filearchive table
  70          * @return true on success or null
  71          */
  72         public function load() {
  73                 if ( $this->dataLoaded ) {
  74                         return true;
  75                 }
  76                 $conds = array();
  77
  78                 if( $this->id > 0 )
  79                         $conds['fa_id'] = $this->id;
  80                 if( $this->key ) {
  81                         $conds['fa_storage_group'] = $this->group;
  82                         $conds['fa_storage_key'] = $this->key;
  83                 }
  84                 if( $this->title )
  85                         $conds['fa_name'] = $this->title->getDBkey();
  86
  87                 if( !count($conds))
  88                         throw new MWException( "No specific information for retrieving archived file" );
  89
  90                 if( !$this->title || $this->title->getNamespace() == NS_FILE ) {
  91                         $dbr = wfGetDB( DB_SLAVE );
  92                         $res = $dbr->select( 'filearchive',
  93                                 array(
  94                                         'fa_id',
  95                                         'fa_name',
  96                                         'fa_archive_name',
  97                                         'fa_storage_key',
  98                                         'fa_storage_group',
  99                                         'fa_size',
 100                                         'fa_bits',
 101                                         'fa_width',
 102                                         'fa_height',
 103                                         'fa_metadata',
 104                                         'fa_media_type',
 105                                         'fa_major_mime',
 106                                         'fa_minor_mime',
 107                                         'fa_description',
 108                                         'fa_user',
 109                                         'fa_user_text',
 110                                         'fa_timestamp',
 111                                         'fa_deleted' ),
 112                                 $conds,
 113                                 __METHOD__,
 114                                 array( 'ORDER BY' => 'fa_timestamp DESC' ) );
 115
 116                         if ( $dbr->numRows( $res ) == 0 ) {
 117                         // this revision does not exist?
 118                                 return;
 119                         }
 120                         $ret = $dbr->resultObject( $res );
 121                         $row = $ret->fetchObject();
 122
 123                         // initialize fields for filestore image object
 124                         $this->id = intval($row->fa_id);
 125                         $this->name = $row->fa_name;
 126                         $this->archive_name = $row->fa_archive_name;
 127                         $this->group = $row->fa_storage_group;
 128                         $this->key = $row->fa_storage_key;
 129                         $this->size = $row->fa_size;
 130                         $this->bits = $row->fa_bits;
 131                         $this->width = $row->fa_width;
 132                         $this->height = $row->fa_height;
 133                         $this->metadata = $row->fa_metadata;
 134                         $this->mime = "$row->fa_major_mime/$row->fa_minor_mime";
 135                         $this->media_type = $row->fa_media_type;
 136                         $this->description = $row->fa_description;
 137                         $this->user = $row->fa_user;
 138                         $this->user_text = $row->fa_user_text;
 139                         $this->timestamp = $row->fa_timestamp;
 140                         $this->deleted = $row->fa_deleted;
 141                 } else {
 142                         throw new MWException( 'This title does not correspond to an image page.' );
 143                         return;
 144                 }
 145                 $this->dataLoaded = true;
 146                 $this->exists = true;
 147
 148                 return true;
 149         }
 150
 151         /**
 152          * Loads a file object from the filearchive table
 153          * @return ArchivedFile
 154          */
 155         public static function newFromRow( $row ) {
 156                 $file = new ArchivedFile( Title::makeTitle( NS_FILE, $row->fa_name ) );
 157
 158                 $file->id = intval($row->fa_id);
 159                 $file->name = $row->fa_name;
 160                 $file->archive_name = $row->fa_archive_name;
 161                 $file->group = $row->fa_storage_group;
 162                 $file->key = $row->fa_storage_key;
 163                 $file->size = $row->fa_size;
 164                 $file->bits = $row->fa_bits;
 165                 $file->width = $row->fa_width;
 166                 $file->height = $row->fa_height;
 167                 $file->metadata = $row->fa_metadata;
 168                 $file->mime = "$row->fa_major_mime/$row->fa_minor_mime";
 169                 $file->media_type = $row->fa_media_type;
 170                 $file->description = $row->fa_description;
 171                 $file->user = $row->fa_user;
 172                 $file->user_text = $row->fa_user_text;
 173                 $file->timestamp = $row->fa_timestamp;
 174                 $file->deleted = $row->fa_deleted;
 175
 176                 return $file;
 177         }
 178
 179         /**
 180          * Return the associated title object
 181          */
 182         public function getTitle() {
 183                 return $this->title;
 184         }
 185
 186         /**
 187          * Return the file name
 188          */
 189         public function getName() {
 190                 return $this->name;
 191         }
 192
 193         public function getID() {
 194                 $this->load();
 195                 return $this->id;
 196         }
 197
 198         public function exists() {
 199                 $this->load();
 200                 return $this->exists;
 201         }
 202
 203         /**
 204          * Return the FileStore key
 205          */
 206         public function getKey() {
 207                 $this->load();
 208                 return $this->key;
 209         }
 210
 211         /**
 212          * Return the FileStore key (overriding base File class)
 213          */
 214         public function getStorageKey() {
 215                 return $this->getKey();
 216         }
 217
 218         /**
 219          * Return the FileStore storage group
 220          */
 221         public function getGroup() {
 222                 return $file->group;
 223         }
 224
 225         /**
 226          * Return the width of the image
 227          */
 228         public function getWidth() {
 229                 $this->load();
 230                 return $this->width;
 231         }
 232
 233         /**
 234          * Return the height of the image
 235          */
 236         public function getHeight() {
 237                 $this->load();
 238                 return $this->height;
 239         }
 240
 241         /**
 242          * Get handler-specific metadata
 243          */
 244         public function getMetadata() {
 245                 $this->load();
 246                 return $this->metadata;
 247         }
 248
 249         /**
 250          * Return the size of the image file, in bytes
 251          */
 252         public function getSize() {
 253                 $this->load();
 254                 return $this->size;
 255         }
 256
 257         /**
 258          * Return the bits of the image file, in bytes
 259          */
 260         public function getBits() {
 261                 $this->load();
 262                 return $this->bits;
 263         }
 264
 265         /**
 266          * Returns the mime type of the file.
 267          */
 268         public function getMimeType() {
 269                 $this->load();
 270                 return $this->mime;
 271         }
 272
 273         /**
 274          * Return the type of the media in the file.
 275          * Use the value returned by this function with the MEDIATYPE_xxx constants.
 276          */
 277         public function getMediaType() {
 278                 $this->load();
 279                 return $this->media_type;
 280         }
 281
 282         /**
 283          * Return upload timestamp.
 284          */
 285         public function getTimestamp() {
 286                 $this->load();
 287                 return wfTimestamp( TS_MW, $this->timestamp );
 288         }
 289
 290         /**
 291          * Return the user ID of the uploader.
 292          */
 293         public function getUser() {
 294                 $this->load();
 295                 if( $this->isDeleted( File::DELETED_USER ) ) {
 296                         return 0;
 297                 } else {
 298                         return $this->user;
 299                 }
 300         }
 301
 302         /**
 303          * Return the user name of the uploader.
 304          */
 305         public function getUserText() {
 306                 $this->load();
 307                 if( $this->isDeleted( File::DELETED_USER ) ) {
 308                         return 0;
 309                 } else {
 310                         return $this->user_text;
 311                 }
 312         }
 313
 314         /**
 315          * Return upload description.
 316          */
 317         public function getDescription() {
 318                 $this->load();
 319                 if( $this->isDeleted( File::DELETED_COMMENT ) ) {
 320                         return 0;
 321                 } else {
 322                         return $this->description;
 323                 }
 324         }
 325
 326         /**
 327          * Return the user ID of the uploader.
 328          */
 329         public function getRawUser() {
 330                 $this->load();
 331                 return $this->user;
 332         }
 333
 334         /**
 335          * Return the user name of the uploader.
 336          */
 337         public function getRawUserText() {
 338                 $this->load();
 339                 return $this->user_text;
 340         }
 341
 342         /**
 343          * Return upload description.
 344          */
 345         public function getRawDescription() {
 346                 $this->load();
 347                 return $this->description;
 348         }
 349
 350         /**
 351          * Returns the deletion bitfield
 352          * @return int
 353          */
 354         public function getVisibility() {
 355                 $this->load();
 356                 return $this->deleted;
 357         }
 358
 359         /**
 360          * for file or revision rows
 361          *
 362          * @param $field Integer: one of DELETED_* bitfield constants
 363          * @return bool
 364          */
 365         public function isDeleted( $field ) {
 366                 $this->load();
 367                 return ($this->deleted & $field) == $field;
 368         }
 369
 370         /**
 371          * Determine if the current user is allowed to view a particular
 372          * field of this FileStore image file, if it's marked as deleted.
 373          * @param $field Integer
 374          * @return bool
 375          */
 376         public function userCan( $field ) {
 377                 $this->load();
 378                 return Revision::userCanBitfield( $this->deleted, $field );
 379         }
 380 }