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, $wgRequest, $wgMaxImageWidth, $wgUseImageResize;
  41                 $this->img  = Image::newFromTitle( $this->mTitle );
  42                 $url  = $this->img->getUrl();
  43                 $anchoropen = '';
  44                 $anchorclose = '';
  45
  46
  47                 if ( $this->img->exists() ) {
  48
  49                         $sk = $wgUser->getSkin();
  50
  51                         if ( $this->img->getType() != '' ) {
  52                                 # image
  53                                 $width = $this->img->getWidth();
  54                                 $height = $this->img->getHeight();
  55                                 if ( $width > $wgMaxImageWidth && $wgUseImageResize ) {
  56                                         $anchoropen  = "<a href=\"{$url}\">";
  57                                         $anchorclose = '</a>';
  58                                         $url=$this->img->createThumb( $wgMaxImageWidth );
  59                                         $height = floor( $height * $wgMaxImageWidth / $width );
  60                                         $width  = $wgMaxImageWidth;
  61                                 }
  62                                 $s = "<div class=\"fullImage\">" . $anchoropen .
  63                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
  64                                      $wgRequest->getVal( 'image' )."\" />" . $anchorclose . "</div>";
  65                         } else {
  66                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($this->img->getName(),"")."</div>";
  67                         }
  68                         $wgOut->addHTML( $s );
  69                 }
  70         }
  71
  72         function closeShowImage()
  73         {
  74                 # For overloading
  75         }
  76
  77         /**
  78          * If the page we've just displayed is in the "Image" namespace,
  79          * we follow it with an upload history of the image and its usage.
  80          */
  81         function imageHistory()
  82         {
  83                 global $wgUser, $wgOut;
  84
  85                 $sk = $wgUser->getSkin();
  86
  87                 $line = $this->img->nextHistoryLine();
  88
  89                 if ( $line ) {
  90                         $s = $sk->beginImageHistoryList() .
  91                                 $sk->imageHistoryLine( true, $line->img_timestamp,
  92                                         $this->mTitle->getDBkey(),  $line->img_user,
  93                                         $line->img_user_text, $line->img_size, $line->img_description );
  94
  95                         while ( $line = $this->img->nextHistoryLine() ) {
  96                                 $s .= $sk->imageHistoryLine( false, $line->img_timestamp,
  97                                 $line->oi_archive_name, $line->img_user,
  98                                 $line->img_user_text, $line->img_size, $line->img_description );
  99                         }
 100                         $s .= $sk->endImageHistoryList();
 101                 } else { $s=''; }
 102                 $wgOut->addHTML( $s );
 103         }
 104
 105         function imageLinks()
 106         {
 107                 global $wgUser, $wgOut;
 108
 109                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 110
 111                 $dbr =& wfGetDB( DB_SLAVE );
 112                 $cur = $dbr->tableName( 'cur' );
 113                 $imagelinks = $dbr->tableName( 'imagelinks' );
 114
 115                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 116                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id";
 117                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 118
 119                 if ( 0 == $dbr->numRows( $res ) ) {
 120                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 121                         return;
 122                 }
 123                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 124
 125                 $sk = $wgUser->getSkin();
 126                 while ( $s = $dbr->fetchObject( $res ) ) {
 127                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 128                         $link = $sk->makeKnownLinkObj( $name, "" );
 129                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 130                 }
 131                 $wgOut->addHTML( "</ul>\n" );
 132         }
 133
 134         function delete()
 135         {
 136                 global $wgUser, $wgOut, $wgRequest;
 137
 138                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 139                 $image = $wgRequest->getVal( 'image' );
 140                 $oldimage = $wgRequest->getVal( 'oldimage' );
 141
 142                 # Only sysops can delete images. Previously ordinary users could delete
 143                 # old revisions, but this is no longer the case.
 144                 if ( !$wgUser->isSysop() ) {
 145                         $wgOut->sysopRequired();
 146                         return;
 147                 }
 148                 if ( wfReadOnly() ) {
 149                         $wgOut->readOnlyPage();
 150                         return;
 151                 }
 152
 153                 # Better double-check that it hasn't been deleted yet!
 154                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 155                 if ( !is_null( $image ) ) {
 156                         if ( '' == trim( $image ) ) {
 157                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 158                                 return;
 159                         }
 160                 }
 161
 162                 # Deleting old images doesn't require confirmation
 163                 if ( !is_null( $oldimage ) || $confirm ) {
 164                         $this->doDelete();
 165                         return;
 166                 }
 167
 168                 if ( !is_null( $image ) ) {
 169                         $q = '&image=' . urlencode( $image );
 170                 } else if ( !is_null( $oldimage ) ) {
 171                         $q = '&oldimage=' . urlencode( $oldimage );
 172                 } else {
 173                         $q = '';
 174                 }
 175                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 176         }
 177
 178         function doDelete()
 179         {
 180                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 181                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 182                 $fname = 'ImagePage::doDelete';
 183
 184                 $reason = $wgRequest->getVal( 'wpReason' );
 185                 $image = $wgRequest->getVal( 'image' );
 186                 $oldimage = $wgRequest->getVal( 'oldimage' );
 187
 188                 $dbw =& wfGetDB( DB_MASTER );
 189
 190                 if ( !is_null( $oldimage ) ) {
 191                         # Squid purging
 192                         if ( $wgUseSquid ) {
 193                                 $urlArr = Array(
 194                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 195                                 );
 196                                 wfPurgeSquidServers($urlArr);
 197                         }
 198                         $this->doDeleteOldImage( $oldimage );
 199                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 200                         $deleted = $oldimage;
 201                 } else {
 202                         if ( is_null ( $image ) ) {
 203                                 $image = $this->mTitle->getDBkey();
 204                         }
 205                         $dest = wfImageDir( $image );
 206                         $archive = wfImageDir( $image );
 207                         if ( ! @unlink( "{$dest}/{$image}" ) ) {
 208                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 209                                 return;
 210                         }
 211                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 212                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 213
 214                         # Squid purging
 215                         if ( $wgUseSquid ) {
 216                                 $urlArr = Array(
 217                                         $wgInternalServer . Image::wfImageUrl( $image )
 218                                 );
 219                                 wfPurgeSquidServers($urlArr);
 220                         }
 221
 222
 223                         $urlArr = Array();
 224                         while ( $s = $dbw->fetchObject( $res ) ) {
 225                                 $this->doDeleteOldImage( $s->oi_archive_name );
 226                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 227                         }
 228
 229                         # Squid purging, part II
 230                         if ( $wgUseSquid ) {
 231                                 /* this needs to be done after LinksUpdate */
 232                                 $u = new SquidUpdate( $urlArr );
 233                                 array_push( $wgDeferredUpdateList, $u );
 234                         }
 235
 236                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 237
 238                         # Image itself is now gone, and database is cleaned.
 239                         # Now we remove the image description page.
 240
 241                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 242                         $article = new Article( $nt );
 243                         $article->doDeleteArticle( $reason ); # ignore errors
 244
 245                         $deleted = $image;
 246                 }
 247
 248                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 249                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 250
 251                 $sk = $wgUser->getSkin();
 252                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 253                   Namespace::getWikipedia() ) .
 254                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 255
 256                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 257
 258                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 259                 $wgOut->returnToMain( false );
 260         }
 261
 262         function doDeleteOldImage( $oldimage )
 263         {
 264                 global $wgOut;
 265
 266                 $name = substr( $oldimage, 15 );
 267                 $archive = wfImageArchiveDir( $name );
 268                 if ( ! @unlink( "{$archive}/{$oldimage}" ) ) {
 269                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 270                 } else {
 271                         # Log the deletion
 272                         $log = new LogPage( 'delete' );
 273                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 274                 }
 275         }
 276
 277         function revert()
 278         {
 279                 global $wgOut, $wgRequest;
 280                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 281
 282                 $oldimage = $wgRequest->getText( 'oldimage' );
 283
 284                 if ( strlen( $oldimage ) < 16 ) {
 285                         $wgOut->unexpectedValueError( 'oldimage', $oldimage );
 286                         return;
 287                 }
 288                 if ( wfReadOnly() ) {
 289                         $wgOut->readOnlyPage();
 290                         return;
 291                 }
 292                 if ( ! $this->mTitle->userCanEdit() ) {
 293                         $wgOut->sysopRequired();
 294                         return;
 295                 }
 296                 $name = substr( $oldimage, 15 );
 297
 298                 $dest = wfImageDir( $name );
 299                 $archive = wfImageArchiveDir( $name );
 300                 $curfile = "{$dest}/{$name}";
 301
 302                 if ( ! is_file( $curfile ) ) {
 303                         $wgOut->fileNotFoundError( $curfile );
 304                         return;
 305                 }
 306                 $oldver = wfTimestampNow() . "!{$name}";
 307
 308                 $dbr =& wfGetDB( DB_SLAVE );
 309                 $size = $dbr->getField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 310                   $dbr->strencode( $oldimage ) . "'" );
 311
 312                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 313                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 314                         return;
 315                 }
 316                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 317                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 318                 }
 319                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 320                 # Squid purging
 321                 if ( $wgUseSquid ) {
 322                         $urlArr = Array(
 323                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 324                                 $wgInternalServer . Image::wfImageUrl( $name )
 325                         );
 326                         wfPurgeSquidServers($urlArr);
 327                 }
 328
 329                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 330                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 331                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 332                 $wgOut->returnToMain( false );
 333         }
 334 }
 335
 336
 337 ?>