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                 $sql = "SELECT cur_namespace,cur_title FROM imagelinks,cur WHERE il_to='" .
  89                   wfStrencode( $this->mTitle->getDBkey() ) . "' AND il_from=cur_id";
  90                 $res = wfQuery( $sql, DB_READ, "Article::imageLinks" );
  91
  92                 if ( 0 == wfNumRows( $res ) ) {
  93                         $wgOut->addHtml( "<p>" . wfMsg( "nolinkstoimage" ) . "</p>\n" );
  94                         return;
  95                 }
  96                 $wgOut->addHTML( "<p>" . wfMsg( "linkstoimage" ) .  "</p>\n<ul>" );
  97
  98                 $sk = $wgUser->getSkin();
  99                 while ( $s = wfFetchObject( $res ) ) {
 100                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 101                         $link = $sk->makeKnownLinkObj( $name, "" );
 102                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 103                 }
 104                 $wgOut->addHTML( "</ul>\n" );
 105         }
 106
 107         function delete()
 108         {
 109                 global $wgUser, $wgOut, $wgRequest;
 110
 111                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 112                 $image = $wgRequest->getVal( 'image' );
 113                 $oldimage = $wgRequest->getVal( 'oldimage' );
 114
 115                 # Only sysops can delete images. Previously ordinary users could delete
 116                 # old revisions, but this is no longer the case.
 117                 if ( !$wgUser->isSysop() ) {
 118                         $wgOut->sysopRequired();
 119                         return;
 120                 }
 121                 if ( wfReadOnly() ) {
 122                         $wgOut->readOnlyPage();
 123                         return;
 124                 }
 125
 126                 # Better double-check that it hasn't been deleted yet!
 127                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
 128                 if ( !is_null( $image ) ) {
 129                         if ( "" == trim( $image ) ) {
 130                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
 131                                 return;
 132                         }
 133                 }
 134
 135                 # Deleting old images doesn't require confirmation
 136                 if ( !is_null( $oldimage ) || $confirm ) {
 137                         $this->doDelete();
 138                         return;
 139                 }
 140
 141                 if ( !is_null( $image ) ) {
 142                         $q = "&image=" . urlencode( $image );
 143                 } else if ( !is_null( $oldimage ) ) {
 144                         $q = "&oldimage=" . urlencode( $oldimage );
 145                 } else {
 146                         $q = "";
 147                 }
 148                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 149         }
 150
 151         function doDelete()
 152         {
 153                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 154                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 155                 $fname = "Article::doDelete";
 156
 157                 $reason = $wgRequest->getVal( 'wpReason' );
 158                 $image = $wgRequest->getVal( 'image' );
 159                 $oldimage = $wgRequest->getVal( 'oldimage' );
 160
 161                 if ( !is_null( $image ) ) {
 162                         $dest = wfImageDir( $image );
 163                         $archive = wfImageDir( $image );
 164                         if ( ! @unlink( "{$dest}/{$image}" ) ) {
 165                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 166                                 return;
 167                         }
 168                         $sql = "DELETE FROM image WHERE img_name='" .
 169                           wfStrencode( $image ) . "'";
 170                         wfQuery( $sql, DB_WRITE, $fname );
 171
 172                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
 173                           wfStrencode( $image ) . "'";
 174                         $res = wfQuery( $sql, DB_READ, $fname );
 175
 176                         # Squid purging
 177                         if ( $wgUseSquid ) {
 178                                 $urlArr = Array(
 179                                         $wgInternalServer . Image::wfImageUrl( $image )
 180                                 );
 181                                 wfPurgeSquidServers($urlArr);
 182                         }
 183
 184
 185                         $urlArr = Array();
 186                         while ( $s = wfFetchObject( $res ) ) {
 187                                 $this->doDeleteOldImage( $s->oi_archive_name );
 188                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 189                         }
 190
 191                         # Squid purging, part II
 192                         if ( $wgUseSquid ) {
 193                                 /* this needs to be done after LinksUpdate */
 194                                 $u = new SquidUpdate( $urlArr );
 195                                 array_push( $wgDeferredUpdateList, $u );
 196                         }
 197
 198                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
 199                           wfStrencode( $image ) . "'";
 200                         wfQuery( $sql, DB_WRITE, $fname );
 201
 202                         # Image itself is now gone, and database is cleaned.
 203                         # Now we remove the image description page.
 204
 205                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 206                         $article = new Article( $nt );
 207                         $article->doDeleteArticle( $reason ); # ignore errors
 208
 209                         $deleted = $image;
 210                 } else if ( !is_null( $oldimage ) ) {
 211                         # Squid purging
 212                         if ( $wgUseSquid ) {
 213                                 $urlArr = Array(
 214                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 215                                 );
 216                                 wfPurgeSquidServers($urlArr);
 217                         }
 218                         $this->doDeleteOldImage( $oldimage );
 219                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
 220                           wfStrencode( $oldimage ) . "'";
 221                         wfQuery( $sql, DB_WRITE, $fname );
 222
 223                         $deleted = $oldimage;
 224                 } else {
 225                         $this->doDeleteArticle( $reason ); # ignore errors
 226                         $deleted = $this->mTitle->getPrefixedText();
 227                 }
 228                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 229                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 230
 231                 $sk = $wgUser->getSkin();
 232                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 233                   Namespace::getWikipedia() ) .
 234                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
 235
 236                 $text = wfMsg( "deletedtext", $deleted, $loglink );
 237
 238                 $wgOut->addHTML( "<p>" . $text . "</p>\n" );
 239                 $wgOut->returnToMain( false );
 240         }
 241
 242         function doDeleteOldImage( $oldimage )
 243         {
 244                 global $wgOut;
 245
 246                 $name = substr( $oldimage, 15 );
 247                 $archive = wfImageArchiveDir( $name );
 248                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
 249                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 250                 }
 251         }
 252
 253         function revert()
 254         {
 255                 global $wgOut, $wgRequest;
 256                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 257
 258                 $oldimage = $wgRequest->getText( 'oldimage' );
 259
 260                 if ( strlen( $oldimage ) < 16 ) {
 261                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
 262                         return;
 263                 }
 264                 if ( wfReadOnly() ) {
 265                         $wgOut->readOnlyPage();
 266                         return;
 267                 }
 268                 $name = substr( $oldimage, 15 );
 269
 270                 $dest = wfImageDir( $name );
 271                 $archive = wfImageArchiveDir( $name );
 272                 $curfile = "{$dest}/{$name}";
 273
 274                 if ( ! is_file( $curfile ) ) {
 275                         $wgOut->fileNotFoundError( $curfile );
 276                         return;
 277                 }
 278                 $oldver = wfTimestampNow() . "!{$name}";
 279                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
 280                   wfStrencode( $oldimage ) . "'" );
 281
 282                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 283                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 284                         return;
 285                 }
 286                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 287                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 288                 }
 289                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 290                 # Squid purging
 291                 if ( $wgUseSquid ) {
 292                         $urlArr = Array(
 293                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 294                                 $wgInternalServer . Image::wfImageUrl( $name )
 295                         );
 296                         wfPurgeSquidServers($urlArr);
 297                 }
 298
 299                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 300                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 301                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
 302                 $wgOut->returnToMain( false );
 303         }
 304 }
 305
 306 ?>