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, $wgRequest;
 120
 121                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 122                 $image = $wgRequest->getVal( 'image' );
 123                 $oldimage = $wgRequest->getVal( 'oldimage' );
 124
 125                 # Only sysops can delete images. Previously ordinary users could delete
 126                 # old revisions, but this is no longer the case.
 127                 if ( !$wgUser->isSysop() ) {
 128                         $wgOut->sysopRequired();
 129                         return;
 130                 }
 131                 if ( wfReadOnly() ) {
 132                         $wgOut->readOnlyPage();
 133                         return;
 134                 }
 135
 136                 # Better double-check that it hasn't been deleted yet!
 137                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
 138                 if ( !is_null( $image ) ) {
 139                         if ( "" == trim( $image ) ) {
 140                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
 141                                 return;
 142                         }
 143                 }
 144
 145                 # Deleting old images doesn't require confirmation
 146                 if ( !is_null( $oldimage ) || $confirm ) {
 147                         $this->doDelete();
 148                         return;
 149                 }
 150
 151                 if ( !is_null( $image ) ) {
 152                         $q = "&image={$image}";
 153                 } else if ( !is_null( $oldimage ) ) {
 154                         $q = "&oldimage={$oldimage}";
 155                 }
 156                 return $this->confirmDelete( $q );
 157         }
 158
 159         function doDelete()
 160         {
 161                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 162                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 163                 $fname = "Article::doDelete";
 164
 165                 $reason = $wgRequest->getVal( 'wpReason' );
 166                 $image = $wgRequest->getVal( 'image' );
 167                 $oldimage = $wgRequest->getVal( 'oldimage' );
 168
 169                 if ( !is_null( $image ) ) {
 170                         $dest = wfImageDir( $image );
 171                         $archive = wfImageDir( $image );
 172                         if ( ! unlink( "{$dest}/{$image}" ) ) {
 173                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 174                                 return;
 175                         }
 176                         $sql = "DELETE FROM image WHERE img_name='" .
 177                           wfStrencode( $image ) . "'";
 178                         wfQuery( $sql, DB_WRITE, $fname );
 179
 180                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
 181                           wfStrencode( $image ) . "'";
 182                         $res = wfQuery( $sql, DB_READ, $fname );
 183
 184                         # Squid purging
 185                         if ( $wgUseSquid ) {
 186                                 $urlArr = Array(
 187                                         $wgInternalServer.wfImageUrl( $image )
 188                                 );
 189                                 wfPurgeSquidServers($urlArr);
 190                         }
 191
 192
 193                         $urlArr = Array();
 194                         while ( $s = wfFetchObject( $res ) ) {
 195                                 $this->doDeleteOldImage( $s->oi_archive_name );
 196                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 197                         }
 198
 199                         # Squid purging, part II
 200                         if ( $wgUseSquid ) {
 201                                 /* this needs to be done after LinksUpdate */
 202                                 $u = new SquidUpdate( $urlArr );
 203                                 array_push( $wgDeferredUpdateList, $u );
 204                         }
 205
 206                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
 207                           wfStrencode( $image ) . "'";
 208                         wfQuery( $sql, DB_WRITE, $fname );
 209
 210                         # Image itself is now gone, and database is cleaned.
 211                         # Now we remove the image description page.
 212
 213                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 214                         $article = new Article( $nt );
 215                         $article->doDeleteArticle( $reason ); # ignore errors
 216
 217                         $deleted = $image;
 218                 } else if ( !is_null( $oldimage ) ) {
 219                         # Squid purging
 220                         if ( $wgUseSquid ) {
 221                                 $urlArr = Array(
 222                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 223                                 );
 224                                 wfPurgeSquidServers($urlArr);
 225                         }
 226                         $this->doDeleteOldImage( $oldimage );
 227                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
 228                           wfStrencode( $oldimage ) . "'";
 229                         wfQuery( $sql, DB_WRITE, $fname );
 230
 231                         $deleted = $oldimage;
 232                 } else {
 233                         $this->doDeleteArticle( $reason ); # ignore errors
 234                         $deleted = $this->mTitle->getPrefixedText();
 235                 }
 236                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 237                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 238
 239                 $sk = $wgUser->getSkin();
 240                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 241                   Namespace::getWikipedia() ) .
 242                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
 243
 244                 $text = wfMsg( "deletedtext", $deleted, $loglink );
 245
 246                 $wgOut->addHTML( "<p>" . $text );
 247                 $wgOut->returnToMain( false );
 248         }
 249
 250         function doDeleteOldImage( $oldimage )
 251         {
 252                 global $wgOut;
 253
 254                 $name = substr( $oldimage, 15 );
 255                 $archive = wfImageArchiveDir( $name );
 256                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
 257                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 258                 }
 259         }
 260
 261         function revert()
 262         {
 263                 global $wgOut, $wgRequest;
 264                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 265
 266                 $oldimage = $wgRequest->getText( 'oldimage' );
 267
 268                 if ( strlen( $oldimage ) < 16 ) {
 269                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
 270                         return;
 271                 }
 272                 if ( wfReadOnly() ) {
 273                         $wgOut->readOnlyPage();
 274                         return;
 275                 }
 276                 $name = substr( $oldimage, 15 );
 277
 278                 $dest = wfImageDir( $name );
 279                 $archive = wfImageArchiveDir( $name );
 280                 $curfile = "{$dest}/{$name}";
 281
 282                 if ( ! is_file( $curfile ) ) {
 283                         $wgOut->fileNotFoundError( $curfile );
 284                         return;
 285                 }
 286                 $oldver = wfTimestampNow() . "!{$name}";
 287                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
 288                   wfStrencode( $oldimage ) . "'" );
 289
 290                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 291                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 292                         return;
 293                 }
 294                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 295                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 296                 }
 297                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 298                 # Squid purging
 299                 if ( $wgUseSquid ) {
 300                         $urlArr = Array(
 301                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 302                                 $wgInternalServer.wfImageUrl( $name )
 303                         );
 304                         wfPurgeSquidServers($urlArr);
 305                 }
 306
 307                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 308                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 309                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
 310                 $wgOut->returnToMain( false );
 311         }
 312 }
 313
 314 ?>