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                                      htmlspecialchars( $wgRequest->getVal( 'image' ) )."\" />" . $anchorclose . "</div>";
  80                         } else {
  81                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($this->img->getName(),"")."</div>";
  82                         }
  83                         if($this->img->fromSharedDirectory) {
  84                                 $s.="<div class=\"sharedUploadNotice\">".wfMsg("sharedupload")."</div>";
  85                         }
  86                         $wgOut->addHTML( $s );
  87                 }
  88         }
  89
  90         function closeShowImage()
  91         {
  92                 # For overloading
  93         }
  94
  95         /**
  96          * If the page we've just displayed is in the "Image" namespace,
  97          * we follow it with an upload history of the image and its usage.
  98          */
  99         function imageHistory()
 100         {
 101                 global $wgUser, $wgOut;
 102
 103                 $sk = $wgUser->getSkin();
 104
 105                 $line = $this->img->nextHistoryLine();
 106
 107                 if ( $line ) {
 108                         $s = $sk->beginImageHistoryList() .
 109                                 $sk->imageHistoryLine( true, $line->img_timestamp,
 110                                         $this->mTitle->getDBkey(),  $line->img_user,
 111                                         $line->img_user_text, $line->img_size, $line->img_description );
 112
 113                         while ( $line = $this->img->nextHistoryLine() ) {
 114                                 $s .= $sk->imageHistoryLine( false, $line->img_timestamp,
 115                                 $line->oi_archive_name, $line->img_user,
 116                                 $line->img_user_text, $line->img_size, $line->img_description );
 117                         }
 118                         $s .= $sk->endImageHistoryList();
 119                 } else { $s=''; }
 120                 $wgOut->addHTML( $s );
 121         }
 122
 123         function imageLinks()
 124         {
 125                 global $wgUser, $wgOut;
 126
 127                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 128
 129                 $dbr =& wfGetDB( DB_SLAVE );
 130                 $cur = $dbr->tableName( 'cur' );
 131                 $imagelinks = $dbr->tableName( 'imagelinks' );
 132
 133                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 134                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id";
 135                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 136
 137                 if ( 0 == $dbr->numRows( $res ) ) {
 138                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 139                         return;
 140                 }
 141                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 142
 143                 $sk = $wgUser->getSkin();
 144                 while ( $s = $dbr->fetchObject( $res ) ) {
 145                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 146                         $link = $sk->makeKnownLinkObj( $name, "" );
 147                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 148                 }
 149                 $wgOut->addHTML( "</ul>\n" );
 150         }
 151
 152         function delete()
 153         {
 154                 global $wgUser, $wgOut, $wgRequest;
 155
 156                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 157                 $image = $wgRequest->getVal( 'image' );
 158                 $oldimage = $wgRequest->getVal( 'oldimage' );
 159
 160                 # Only sysops can delete images. Previously ordinary users could delete
 161                 # old revisions, but this is no longer the case.
 162                 if ( !$wgUser->isSysop() ) {
 163                         $wgOut->sysopRequired();
 164                         return;
 165                 }
 166                 if ( wfReadOnly() ) {
 167                         $wgOut->readOnlyPage();
 168                         return;
 169                 }
 170
 171                 # Better double-check that it hasn't been deleted yet!
 172                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 173                 if ( !is_null( $image ) ) {
 174                         if ( '' == trim( $image ) ) {
 175                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 176                                 return;
 177                         }
 178                 }
 179
 180                 # Deleting old images doesn't require confirmation
 181                 if ( !is_null( $oldimage ) || $confirm ) {
 182                         $this->doDelete();
 183                         return;
 184                 }
 185
 186                 if ( !is_null( $image ) ) {
 187                         $q = '&image=' . urlencode( $image );
 188                 } else if ( !is_null( $oldimage ) ) {
 189                         $q = '&oldimage=' . urlencode( $oldimage );
 190                 } else {
 191                         $q = '';
 192                 }
 193                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 194         }
 195
 196         function doDelete()
 197         {
 198                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 199                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 200                 $fname = 'ImagePage::doDelete';
 201
 202                 $reason = $wgRequest->getVal( 'wpReason' );
 203                 $image = $wgRequest->getVal( 'image' );
 204                 $oldimage = $wgRequest->getVal( 'oldimage' );
 205
 206                 $dbw =& wfGetDB( DB_MASTER );
 207
 208                 if ( !is_null( $oldimage ) ) {
 209                         # Squid purging
 210                         if ( $wgUseSquid ) {
 211                                 $urlArr = Array(
 212                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 213                                 );
 214                                 wfPurgeSquidServers($urlArr);
 215                         }
 216                         $this->doDeleteOldImage( $oldimage );
 217                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 218                         $deleted = $oldimage;
 219                 } else {
 220                         if ( is_null ( $image ) ) {
 221                                 $image = $this->mTitle->getDBkey();
 222                         }
 223                         $dest = wfImageDir( $image );
 224                         $archive = wfImageDir( $image );
 225
 226                         # Delete the image file if it exists; due to sync problems
 227                         # or manual trimming sometimes the file will be missing.
 228                         $targetFile = "{$dest}/{$image}";
 229                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 230                                 # If the deletion operation actually failed, bug out:
 231                                 $wgOut->fileDeleteError( $targetFile );
 232                                 return;
 233                         }
 234                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 235                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 236
 237                         # Squid purging
 238                         if ( $wgUseSquid ) {
 239                                 $urlArr = Array(
 240                                         $wgInternalServer . Image::wfImageUrl( $image )
 241                                 );
 242                                 wfPurgeSquidServers($urlArr);
 243                         }
 244
 245
 246                         $urlArr = Array();
 247                         while ( $s = $dbw->fetchObject( $res ) ) {
 248                                 $this->doDeleteOldImage( $s->oi_archive_name );
 249                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 250                         }
 251
 252                         # Squid purging, part II
 253                         if ( $wgUseSquid ) {
 254                                 /* this needs to be done after LinksUpdate */
 255                                 $u = new SquidUpdate( $urlArr );
 256                                 array_push( $wgDeferredUpdateList, $u );
 257                         }
 258
 259                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 260
 261                         # Image itself is now gone, and database is cleaned.
 262                         # Now we remove the image description page.
 263
 264                         $nt = Title::newFromText( $wgContLang->getNsText( Namespace::getImage() ) . ":" . $image );
 265                         $article = new Article( $nt );
 266                         $article->doDeleteArticle( $reason ); # ignore errors
 267
 268                         $deleted = $image;
 269                 }
 270
 271                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 272                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 273
 274                 $sk = $wgUser->getSkin();
 275                 $loglink = $sk->makeKnownLink( $wgContLang->getNsText(
 276                   Namespace::getWikipedia() ) .
 277                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 278
 279                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 280
 281                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 282                 $wgOut->returnToMain( false );
 283         }
 284
 285         function doDeleteOldImage( $oldimage )
 286         {
 287                 global $wgOut;
 288
 289                 $name = substr( $oldimage, 15 );
 290                 $archive = wfImageArchiveDir( $name );
 291
 292                 # Delete the image if it exists. Sometimes the file will be missing
 293                 # due to manual intervention or weird sync problems; treat that
 294                 # condition gracefully and continue to delete the database entry.
 295                 # Also some records may end up with an empty oi_archive_name field
 296                 # if the original file was missing when a new upload was made;
 297                 # don't try to delete the directory then!
 298                 #
 299                 $targetFile = "{$archive}/{$oldimage}";
 300                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 301                         # If we actually have a file and can't delete it, throw an error.
 302                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 303                 } else {
 304                         # Log the deletion
 305                         $log = new LogPage( 'delete' );
 306                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 307                 }
 308         }
 309
 310         function revert()
 311         {
 312                 global $wgOut, $wgRequest;
 313                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 314
 315                 $oldimage = $wgRequest->getText( 'oldimage' );
 316                 if ( strlen( $oldimage ) < 16 ) {
 317                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 318                         return;
 319                 }
 320                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 321                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 322                         return;
 323                 }
 324
 325                 if ( wfReadOnly() ) {
 326                         $wgOut->readOnlyPage();
 327                         return;
 328                 }
 329                 if ( ! $this->mTitle->userCanEdit() ) {
 330                         $wgOut->sysopRequired();
 331                         return;
 332                 }
 333                 $name = substr( $oldimage, 15 );
 334
 335                 $dest = wfImageDir( $name );
 336                 $archive = wfImageArchiveDir( $name );
 337                 $curfile = "{$dest}/{$name}";
 338
 339                 if ( ! is_file( $curfile ) ) {
 340                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 341                         return;
 342                 }
 343                 $oldver = wfTimestampNow() . "!{$name}";
 344
 345                 $dbr =& wfGetDB( DB_SLAVE );
 346                 $size = $dbr->getField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 347                   $dbr->strencode( $oldimage ) . "'" );
 348
 349                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 350                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 351                         return;
 352                 }
 353                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 354                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 355                 }
 356                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 357                 # Squid purging
 358                 if ( $wgUseSquid ) {
 359                         $urlArr = Array(
 360                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 361                                 $wgInternalServer . Image::wfImageUrl( $name )
 362                         );
 363                         wfPurgeSquidServers($urlArr);
 364                 }
 365
 366                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 367                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 368                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 369                 $wgOut->returnToMain( false );
 370         }
 371 }
 372
 373
 374 ?>