includes/ImagePage.php

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