includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 require_once( 'Image.php' );
  10
  11 /**
  12  * Special handling for image description pages
  13  * @package MediaWiki
  14  */
  15 class ImagePage extends Article {
  16
  17         /* private */ var $img;  // Image object this page is shown for. Initilaized in openShowImage, not
  18                                  // available in doDelete etc.
  19
  20         function view() {
  21                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  22                         $this->openShowImage();
  23                 }
  24
  25                 Article::view();
  26
  27                 # If the article we've just shown is in the "Image" namespace,
  28                 # follow it with the history list and link list for the image
  29                 # it describes.
  30
  31                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  32                         $this->closeShowImage();
  33                         $this->imageHistory();
  34                         $this->imageLinks();
  35                 }
  36         }
  37
  38         function openShowImage()
  39         {
  40                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest, $wgUseImageResize;
  41                 $this->img  = Image::newFromTitle( $this->mTitle );
  42                 $url  = $this->img->getViewURL();
  43                 $anchoropen = '';
  44                 $anchorclose = '';
  45                 if ( $wgUseImageResize && $wgUser->getOption( 'imagesize' ) != '' ) {
  46                         $max = $wgImageLimits[ intval( $wgUser->getOption( 'imagesize' ) ) ];
  47                         $maxWidth = $max[0];
  48                         $maxHeight = $max[1];
  49                 }
  50
  51
  52                 if ( $this->img->exists() ) {
  53
  54                         $sk = $wgUser->getSkin();
  55
  56                         if ( $this->img->getType() != '' ) {
  57                                 # image
  58                                 $width = $this->img->getWidth();
  59                                 $height = $this->img->getHeight();
  60                                 $msg = wfMsg('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
  61                                 if ( $width > $maxWidth && $wgUseImageResize ) {
  62                                         $anchoropen  = "<a href=\"{$url}\">";
  63                                         $anchorclose = "<br>{$msg}</a>";
  64
  65                                         $url = $this->img->createThumb( $maxWidth );
  66                                         $height = floor( $height * $maxWidth / $width );
  67                                         $width  = $maxWidth;
  68                                 }
  69                                 if ( $height > $maxHeight && $wgUseImageResize ) {
  70                                         $anchoropen  = "<a href=\"{$url}\">";
  71                                         $anchorclose = "<br>{$msg}</a>";
  72
  73                                         $width = floor( $width * $maxHeight / $height );
  74                                         $height = $maxHeight;
  75                                         $url = $this->img->createThumb( $width );
  76                                 }
  77                                 $s = "<div class=\"fullImageLink\">" . $anchoropen .
  78                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
  79                                      $wgRequest->getVal( 'image' )."\" />" . $anchorclose . "</div>";
  80                         } else {
  81                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($this->img->getName(),"")."</div>";
  82                         }
  83                         $wgOut->addHTML( $s );
  84                 }
  85         }
  86
  87         function closeShowImage()
  88         {
  89                 # For overloading
  90         }
  91
  92         /**
  93          * If the page we've just displayed is in the "Image" namespace,
  94          * we follow it with an upload history of the image and its usage.
  95          */
  96         function imageHistory()
  97         {
  98                 global $wgUser, $wgOut;
  99
 100                 $sk = $wgUser->getSkin();
 101
 102                 $line = $this->img->nextHistoryLine();
 103
 104                 if ( $line ) {
 105                         $s = $sk->beginImageHistoryList() .
 106                                 $sk->imageHistoryLine( true, $line->img_timestamp,
 107                                         $this->mTitle->getDBkey(),  $line->img_user,
 108                                         $line->img_user_text, $line->img_size, $line->img_description );
 109
 110                         while ( $line = $this->img->nextHistoryLine() ) {
 111                                 $s .= $sk->imageHistoryLine( false, $line->img_timestamp,
 112                                 $line->oi_archive_name, $line->img_user,
 113                                 $line->img_user_text, $line->img_size, $line->img_description );
 114                         }
 115                         $s .= $sk->endImageHistoryList();
 116                 } else { $s=''; }
 117                 $wgOut->addHTML( $s );
 118         }
 119
 120         function imageLinks()
 121         {
 122                 global $wgUser, $wgOut;
 123
 124                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 125
 126                 $dbr =& wfGetDB( DB_SLAVE );
 127                 $cur = $dbr->tableName( 'cur' );
 128                 $imagelinks = $dbr->tableName( 'imagelinks' );
 129
 130                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 131                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id";
 132                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 133
 134                 if ( 0 == $dbr->numRows( $res ) ) {
 135                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 136                         return;
 137                 }
 138                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 139
 140                 $sk = $wgUser->getSkin();
 141                 while ( $s = $dbr->fetchObject( $res ) ) {
 142                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 143                         $link = $sk->makeKnownLinkObj( $name, "" );
 144                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 145                 }
 146                 $wgOut->addHTML( "</ul>\n" );
 147         }
 148
 149         function delete()
 150         {
 151                 global $wgUser, $wgOut, $wgRequest;
 152
 153                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 154                 $image = $wgRequest->getVal( 'image' );
 155                 $oldimage = $wgRequest->getVal( 'oldimage' );
 156
 157                 # Only sysops can delete images. Previously ordinary users could delete
 158                 # old revisions, but this is no longer the case.
 159                 if ( !$wgUser->isSysop() ) {
 160                         $wgOut->sysopRequired();
 161                         return;
 162                 }
 163                 if ( wfReadOnly() ) {
 164                         $wgOut->readOnlyPage();
 165                         return;
 166                 }
 167
 168                 # Better double-check that it hasn't been deleted yet!
 169                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 170                 if ( !is_null( $image ) ) {
 171                         if ( '' == trim( $image ) ) {
 172                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 173                                 return;
 174                         }
 175                 }
 176
 177                 # Deleting old images doesn't require confirmation
 178                 if ( !is_null( $oldimage ) || $confirm ) {
 179                         $this->doDelete();
 180                         return;
 181                 }
 182
 183                 if ( !is_null( $image ) ) {
 184                         $q = '&image=' . urlencode( $image );
 185                 } else if ( !is_null( $oldimage ) ) {
 186                         $q = '&oldimage=' . urlencode( $oldimage );
 187                 } else {
 188                         $q = '';
 189                 }
 190                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 191         }
 192
 193         function doDelete()
 194         {
 195                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 196                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 197                 $fname = 'ImagePage::doDelete';
 198
 199                 $reason = $wgRequest->getVal( 'wpReason' );
 200                 $image = $wgRequest->getVal( 'image' );
 201                 $oldimage = $wgRequest->getVal( 'oldimage' );
 202
 203                 $dbw =& wfGetDB( DB_MASTER );
 204
 205                 if ( !is_null( $oldimage ) ) {
 206                         # Squid purging
 207                         if ( $wgUseSquid ) {
 208                                 $urlArr = Array(
 209                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 210                                 );
 211                                 wfPurgeSquidServers($urlArr);
 212                         }
 213                         $this->doDeleteOldImage( $oldimage );
 214                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 215                         $deleted = $oldimage;
 216                 } else {
 217                         if ( is_null ( $image ) ) {
 218                                 $image = $this->mTitle->getDBkey();
 219                         }
 220                         $dest = wfImageDir( $image );
 221                         $archive = wfImageDir( $image );
 222
 223                         # Delete the image file if it exists; due to sync problems
 224                         # or manual trimming sometimes the file will be missing.
 225                         $targetFile = "{$dest}/{$image}";
 226                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 227                                 # If the deletion operation actually failed, bug out:
 228                                 $wgOut->fileDeleteError( $targetFile );
 229                                 return;
 230                         }
 231                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 232                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 233
 234                         # Squid purging
 235                         if ( $wgUseSquid ) {
 236                                 $urlArr = Array(
 237                                         $wgInternalServer . Image::wfImageUrl( $image )
 238                                 );
 239                                 wfPurgeSquidServers($urlArr);
 240                         }
 241
 242
 243                         $urlArr = Array();
 244                         while ( $s = $dbw->fetchObject( $res ) ) {
 245                                 $this->doDeleteOldImage( $s->oi_archive_name );
 246                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 247                         }
 248
 249                         # Squid purging, part II
 250                         if ( $wgUseSquid ) {
 251                                 /* this needs to be done after LinksUpdate */
 252                                 $u = new SquidUpdate( $urlArr );
 253                                 array_push( $wgDeferredUpdateList, $u );
 254                         }
 255
 256                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 257
 258                         # Image itself is now gone, and database is cleaned.
 259                         # Now we remove the image description page.
 260
 261                         $nt = Title::newFromText( $wgContLang->getNsText( Namespace::getImage() ) . ":" . $image );
 262                         $article = new Article( $nt );
 263                         $article->doDeleteArticle( $reason ); # ignore errors
 264
 265                         $deleted = $image;
 266                 }
 267
 268                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 269                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 270
 271                 $sk = $wgUser->getSkin();
 272                 $loglink = $sk->makeKnownLink( $wgContLang->getNsText(
 273                   Namespace::getWikipedia() ) .
 274                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 275
 276                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 277
 278                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 279                 $wgOut->returnToMain( false );
 280         }
 281
 282         function doDeleteOldImage( $oldimage )
 283         {
 284                 global $wgOut;
 285
 286                 $name = substr( $oldimage, 15 );
 287                 $archive = wfImageArchiveDir( $name );
 288
 289                 # Delete the image if it exists. Sometimes the file will be missing
 290                 # due to manual intervention or weird sync problems; treat that
 291                 # condition gracefully and continue to delete the database entry.
 292                 # Also some records may end up with an empty oi_archive_name field
 293                 # if the original file was missing when a new upload was made;
 294                 # don't try to delete the directory then!
 295                 #
 296                 $targetFile = "{$archive}/{$oldimage}";
 297                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 298                         # If we actually have a file and can't delete it, throw an error.
 299                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 300                 } else {
 301                         # Log the deletion
 302                         $log = new LogPage( 'delete' );
 303                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 304                 }
 305         }
 306
 307         function revert()
 308         {
 309                 global $wgOut, $wgRequest;
 310                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 311
 312                 $oldimage = $wgRequest->getText( 'oldimage' );
 313
 314                 if ( strlen( $oldimage ) < 16 ) {
 315                         $wgOut->unexpectedValueError( 'oldimage', $oldimage );
 316                         return;
 317                 }
 318                 if ( wfReadOnly() ) {
 319                         $wgOut->readOnlyPage();
 320                         return;
 321                 }
 322                 if ( ! $this->mTitle->userCanEdit() ) {
 323                         $wgOut->sysopRequired();
 324                         return;
 325                 }
 326                 $name = substr( $oldimage, 15 );
 327
 328                 $dest = wfImageDir( $name );
 329                 $archive = wfImageArchiveDir( $name );
 330                 $curfile = "{$dest}/{$name}";
 331
 332                 if ( ! is_file( $curfile ) ) {
 333                         $wgOut->fileNotFoundError( $curfile );
 334                         return;
 335                 }
 336                 $oldver = wfTimestampNow() . "!{$name}";
 337
 338                 $dbr =& wfGetDB( DB_SLAVE );
 339                 $size = $dbr->getField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 340                   $dbr->strencode( $oldimage ) . "'" );
 341
 342                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 343                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 344                         return;
 345                 }
 346                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 347                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 348                 }
 349                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 350                 # Squid purging
 351                 if ( $wgUseSquid ) {
 352                         $urlArr = Array(
 353                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 354                                 $wgInternalServer . Image::wfImageUrl( $name )
 355                         );
 356                         wfPurgeSquidServers($urlArr);
 357                 }
 358
 359                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 360                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 361                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 362                 $wgOut->returnToMain( false );
 363         }
 364 }
 365
 366
 367 ?>