includes/ImagePage.php

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