includes/ImagePage.php

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