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
  80                 $line = $this->img->nextHistoryLine();
  81
  82                 if ( $line ) {
  83                         $s = $sk->beginImageHistoryList() .
  84                                 $sk->imageHistoryLine( true, $line->img_timestamp,
  85                                         $this->mTitle->getDBkey(),  $line->img_user,
  86                                         $line->img_user_text, $line->img_size, $line->img_description );
  87
  88                         while ( $line = $this->img->nextHistoryLine() ) {
  89                                 $s .= $sk->imageHistoryLine( false, $line->img_timestamp,
  90                                 $line->oi_archive_name, $line->img_user,
  91                                 $line->img_user_text, $line->img_size, $line->img_description );
  92                         }
  93                         $s .= $sk->endImageHistoryList();
  94                 } else { $s=''; }
  95                 $wgOut->addHTML( $s );
  96         }
  97
  98         function imageLinks()
  99         {
 100                 global $wgUser, $wgOut;
 101
 102                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 103
 104                 $dbr =& wfGetDB( DB_SLAVE );
 105                 $cur = $dbr->tableName( 'cur' );
 106                 $imagelinks = $dbr->tableName( 'imagelinks' );
 107
 108                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 109                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id";
 110                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 111
 112                 if ( 0 == $dbr->numRows( $res ) ) {
 113                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 114                         return;
 115                 }
 116                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 117
 118                 $sk = $wgUser->getSkin();
 119                 while ( $s = $dbr->fetchObject( $res ) ) {
 120                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 121                         $link = $sk->makeKnownLinkObj( $name, "" );
 122                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 123                 }
 124                 $wgOut->addHTML( "</ul>\n" );
 125         }
 126
 127         function delete()
 128         {
 129                 global $wgUser, $wgOut, $wgRequest;
 130
 131                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 132                 $image = $wgRequest->getVal( 'image' );
 133                 $oldimage = $wgRequest->getVal( 'oldimage' );
 134
 135                 # Only sysops can delete images. Previously ordinary users could delete
 136                 # old revisions, but this is no longer the case.
 137                 if ( !$wgUser->isSysop() ) {
 138                         $wgOut->sysopRequired();
 139                         return;
 140                 }
 141                 if ( wfReadOnly() ) {
 142                         $wgOut->readOnlyPage();
 143                         return;
 144                 }
 145
 146                 # Better double-check that it hasn't been deleted yet!
 147                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 148                 if ( !is_null( $image ) ) {
 149                         if ( '' == trim( $image ) ) {
 150                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 151                                 return;
 152                         }
 153                 }
 154
 155                 # Deleting old images doesn't require confirmation
 156                 if ( !is_null( $oldimage ) || $confirm ) {
 157                         $this->doDelete();
 158                         return;
 159                 }
 160
 161                 if ( !is_null( $image ) ) {
 162                         $q = '&image=' . urlencode( $image );
 163                 } else if ( !is_null( $oldimage ) ) {
 164                         $q = '&oldimage=' . urlencode( $oldimage );
 165                 } else {
 166                         $q = '';
 167                 }
 168                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 169         }
 170
 171         function doDelete()
 172         {
 173                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 174                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 175                 $fname = 'ImagePage::doDelete';
 176
 177                 $reason = $wgRequest->getVal( 'wpReason' );
 178                 $image = $wgRequest->getVal( 'image' );
 179                 $oldimage = $wgRequest->getVal( 'oldimage' );
 180
 181                 $dbw =& wfGetDB( DB_MASTER );
 182
 183                 if ( !is_null( $oldimage ) ) {
 184                         # Squid purging
 185                         if ( $wgUseSquid ) {
 186                                 $urlArr = Array(
 187                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 188                                 );
 189                                 wfPurgeSquidServers($urlArr);
 190                         }
 191                         $this->doDeleteOldImage( $oldimage );
 192                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 193                         $deleted = $oldimage;
 194                 } else {
 195                         if ( is_null ( $image ) ) {
 196                                 $image = $this->mTitle->getDBkey();
 197                         }
 198                         $dest = wfImageDir( $image );
 199                         $archive = wfImageDir( $image );
 200                         if ( ! @unlink( "{$dest}/{$image}" ) ) {
 201                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 202                                 return;
 203                         }
 204                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 205                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 206
 207                         # Squid purging
 208                         if ( $wgUseSquid ) {
 209                                 $urlArr = Array(
 210                                         $wgInternalServer . Image::wfImageUrl( $image )
 211                                 );
 212                                 wfPurgeSquidServers($urlArr);
 213                         }
 214
 215
 216                         $urlArr = Array();
 217                         while ( $s = $dbw->fetchObject( $res ) ) {
 218                                 $this->doDeleteOldImage( $s->oi_archive_name );
 219                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 220                         }
 221
 222                         # Squid purging, part II
 223                         if ( $wgUseSquid ) {
 224                                 /* this needs to be done after LinksUpdate */
 225                                 $u = new SquidUpdate( $urlArr );
 226                                 array_push( $wgDeferredUpdateList, $u );
 227                         }
 228
 229                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 230
 231                         # Image itself is now gone, and database is cleaned.
 232                         # Now we remove the image description page.
 233
 234                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 235                         $article = new Article( $nt );
 236                         $article->doDeleteArticle( $reason ); # ignore errors
 237
 238                         $deleted = $image;
 239                 }
 240
 241                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 242                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 243
 244                 $sk = $wgUser->getSkin();
 245                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 246                   Namespace::getWikipedia() ) .
 247                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 248
 249                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 250
 251                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 252                 $wgOut->returnToMain( false );
 253         }
 254
 255         function doDeleteOldImage( $oldimage )
 256         {
 257                 global $wgOut;
 258
 259                 $name = substr( $oldimage, 15 );
 260                 $archive = wfImageArchiveDir( $name );
 261                 if ( ! @unlink( "{$archive}/{$oldimage}" ) ) {
 262                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 263                 } else {
 264                         # Log the deletion
 265                         $log = new LogPage( 'delete' );
 266                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 267                 }
 268         }
 269
 270         function revert()
 271         {
 272                 global $wgOut, $wgRequest;
 273                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 274
 275                 $oldimage = $wgRequest->getText( 'oldimage' );
 276
 277                 if ( strlen( $oldimage ) < 16 ) {
 278                         $wgOut->unexpectedValueError( 'oldimage', $oldimage );
 279                         return;
 280                 }
 281                 if ( wfReadOnly() ) {
 282                         $wgOut->readOnlyPage();
 283                         return;
 284                 }
 285                 if ( ! $this->mTitle->userCanEdit() ) {
 286                         $wgOut->sysopRequired();
 287                         return;
 288                 }
 289                 $name = substr( $oldimage, 15 );
 290
 291                 $dest = wfImageDir( $name );
 292                 $archive = wfImageArchiveDir( $name );
 293                 $curfile = "{$dest}/{$name}";
 294
 295                 if ( ! is_file( $curfile ) ) {
 296                         $wgOut->fileNotFoundError( $curfile );
 297                         return;
 298                 }
 299                 $oldver = wfTimestampNow() . "!{$name}";
 300
 301                 $dbr =& wfGetDB( DB_SLAVE );
 302                 $size = $dbr->getField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 303                   $dbr->strencode( $oldimage ) . "'" );
 304
 305                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 306                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 307                         return;
 308                 }
 309                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 310                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 311                 }
 312                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 313                 # Squid purging
 314                 if ( $wgUseSquid ) {
 315                         $urlArr = Array(
 316                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 317                                 $wgInternalServer . Image::wfImageUrl( $name )
 318                         );
 319                         wfPurgeSquidServers($urlArr);
 320                 }
 321
 322                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 323                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 324                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 325                 $wgOut->returnToMain( false );
 326         }
 327 }
 328
 329
 330 ?>