includes/ImagePage.php

   1 <?php
   2 /**
   3  *
   4  */
   5
   6 /**
   7  *
   8  */
   9 require_once( 'Image.php' );
  10
  11 /**
  12  * Special handling for image description pages
  13  */
  14 class ImagePage extends Article {
  15
  16         /* private */ var $img;  // Image object this page is shown for. Initilaized in openShowImage, not
  17                                  // available in doDelete etc.
  18
  19         function view() {
  20                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  21                         $this->openShowImage();
  22                 }
  23
  24                 Article::view();
  25
  26                 # If the article we've just shown is in the "Image" namespace,
  27                 # follow it with the history list and link list for the image
  28                 # it describes.
  29
  30                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  31                         $this->closeShowImage();
  32                         $this->imageHistory();
  33                         $this->imageLinks();
  34                 }
  35         }
  36
  37         function openShowImage()
  38         {
  39                 global $wgOut, $wgUser, $wgRequest, $wgMaxImageWidth, $wgUseImageResize;
  40                 $this->img  = Image::newFromTitle( $this->mTitle );
  41                 $url  = $this->img->getUrl();
  42                 $anchoropen = '';
  43                 $anchorclose = '';
  44
  45
  46                 if ( $this->img->exists() ) {
  47
  48                         $sk = $wgUser->getSkin();
  49
  50                         if ( $this->img->getType() != '' ) {
  51                                 # image
  52                                 $width = $this->img->getWidth();
  53                                 $height = $this->img->getHeight();
  54                                 if ( $width > $wgMaxImageWidth && $wgUseImageResize ) {
  55                                         $anchoropen  = "<a href=\"{$url}\">";
  56                                         $anchorclose = '</a>';
  57                                         $url=$this->img->createThumb( $wgMaxImageWidth );
  58                                         $height = floor( $height * $wgMaxImageWidth / $width );
  59                                         $width  = $wgMaxImageWidth;
  60                                 }
  61                                 $s = "<div class=\"fullImage\">" . $anchoropen .
  62                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
  63                                      $wgRequest->getVal( 'image' )."\" />" . $anchorclose . "</div>";
  64                         } else {
  65                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($this->img->getName(),"")."</div>";
  66                         }
  67                         $wgOut->addHTML( $s );
  68                 }
  69         }
  70
  71         function closeShowImage()
  72         {
  73                 # For overloading
  74         }
  75
  76         /**
  77          * If the page we've just displayed is in the "Image" namespace,
  78          * we follow it with an upload history of the image and its usage.
  79          */
  80         function imageHistory()
  81         {
  82                 global $wgUser, $wgOut;
  83
  84                 $sk = $wgUser->getSkin();
  85
  86                 $line = $this->img->nextHistoryLine();
  87
  88                 if ( $line ) {
  89                         $s = $sk->beginImageHistoryList() .
  90                                 $sk->imageHistoryLine( true, $line->img_timestamp,
  91                                         $this->mTitle->getDBkey(),  $line->img_user,
  92                                         $line->img_user_text, $line->img_size, $line->img_description );
  93
  94                         while ( $line = $this->img->nextHistoryLine() ) {
  95                                 $s .= $sk->imageHistoryLine( false, $line->img_timestamp,
  96                                 $line->oi_archive_name, $line->img_user,
  97                                 $line->img_user_text, $line->img_size, $line->img_description );
  98                         }
  99                         $s .= $sk->endImageHistoryList();
 100                 } else { $s=''; }
 101                 $wgOut->addHTML( $s );
 102         }
 103
 104         function imageLinks()
 105         {
 106                 global $wgUser, $wgOut;
 107
 108                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 109
 110                 $dbr =& wfGetDB( DB_SLAVE );
 111                 $cur = $dbr->tableName( 'cur' );
 112                 $imagelinks = $dbr->tableName( 'imagelinks' );
 113
 114                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 115                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id";
 116                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 117
 118                 if ( 0 == $dbr->numRows( $res ) ) {
 119                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 120                         return;
 121                 }
 122                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 123
 124                 $sk = $wgUser->getSkin();
 125                 while ( $s = $dbr->fetchObject( $res ) ) {
 126                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 127                         $link = $sk->makeKnownLinkObj( $name, "" );
 128                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 129                 }
 130                 $wgOut->addHTML( "</ul>\n" );
 131         }
 132
 133         function delete()
 134         {
 135                 global $wgUser, $wgOut, $wgRequest;
 136
 137                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 138                 $image = $wgRequest->getVal( 'image' );
 139                 $oldimage = $wgRequest->getVal( 'oldimage' );
 140
 141                 # Only sysops can delete images. Previously ordinary users could delete
 142                 # old revisions, but this is no longer the case.
 143                 if ( !$wgUser->isSysop() ) {
 144                         $wgOut->sysopRequired();
 145                         return;
 146                 }
 147                 if ( wfReadOnly() ) {
 148                         $wgOut->readOnlyPage();
 149                         return;
 150                 }
 151
 152                 # Better double-check that it hasn't been deleted yet!
 153                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 154                 if ( !is_null( $image ) ) {
 155                         if ( '' == trim( $image ) ) {
 156                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 157                                 return;
 158                         }
 159                 }
 160
 161                 # Deleting old images doesn't require confirmation
 162                 if ( !is_null( $oldimage ) || $confirm ) {
 163                         $this->doDelete();
 164                         return;
 165                 }
 166
 167                 if ( !is_null( $image ) ) {
 168                         $q = '&image=' . urlencode( $image );
 169                 } else if ( !is_null( $oldimage ) ) {
 170                         $q = '&oldimage=' . urlencode( $oldimage );
 171                 } else {
 172                         $q = '';
 173                 }
 174                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 175         }
 176
 177         function doDelete()
 178         {
 179                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 180                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 181                 $fname = 'ImagePage::doDelete';
 182
 183                 $reason = $wgRequest->getVal( 'wpReason' );
 184                 $image = $wgRequest->getVal( 'image' );
 185                 $oldimage = $wgRequest->getVal( 'oldimage' );
 186
 187                 $dbw =& wfGetDB( DB_MASTER );
 188
 189                 if ( !is_null( $oldimage ) ) {
 190                         # Squid purging
 191                         if ( $wgUseSquid ) {
 192                                 $urlArr = Array(
 193                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 194                                 );
 195                                 wfPurgeSquidServers($urlArr);
 196                         }
 197                         $this->doDeleteOldImage( $oldimage );
 198                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 199                         $deleted = $oldimage;
 200                 } else {
 201                         if ( is_null ( $image ) ) {
 202                                 $image = $this->mTitle->getDBkey();
 203                         }
 204                         $dest = wfImageDir( $image );
 205                         $archive = wfImageDir( $image );
 206                         if ( ! @unlink( "{$dest}/{$image}" ) ) {
 207                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 208                                 return;
 209                         }
 210                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 211                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 212
 213                         # Squid purging
 214                         if ( $wgUseSquid ) {
 215                                 $urlArr = Array(
 216                                         $wgInternalServer . Image::wfImageUrl( $image )
 217                                 );
 218                                 wfPurgeSquidServers($urlArr);
 219                         }
 220
 221
 222                         $urlArr = Array();
 223                         while ( $s = $dbw->fetchObject( $res ) ) {
 224                                 $this->doDeleteOldImage( $s->oi_archive_name );
 225                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 226                         }
 227
 228                         # Squid purging, part II
 229                         if ( $wgUseSquid ) {
 230                                 /* this needs to be done after LinksUpdate */
 231                                 $u = new SquidUpdate( $urlArr );
 232                                 array_push( $wgDeferredUpdateList, $u );
 233                         }
 234
 235                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 236
 237                         # Image itself is now gone, and database is cleaned.
 238                         # Now we remove the image description page.
 239
 240                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 241                         $article = new Article( $nt );
 242                         $article->doDeleteArticle( $reason ); # ignore errors
 243
 244                         $deleted = $image;
 245                 }
 246
 247                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 248                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 249
 250                 $sk = $wgUser->getSkin();
 251                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 252                   Namespace::getWikipedia() ) .
 253                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 254
 255                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 256
 257                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 258                 $wgOut->returnToMain( false );
 259         }
 260
 261         function doDeleteOldImage( $oldimage )
 262         {
 263                 global $wgOut;
 264
 265                 $name = substr( $oldimage, 15 );
 266                 $archive = wfImageArchiveDir( $name );
 267                 if ( ! @unlink( "{$archive}/{$oldimage}" ) ) {
 268                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 269                 } else {
 270                         # Log the deletion
 271                         $log = new LogPage( 'delete' );
 272                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 273                 }
 274         }
 275
 276         function revert()
 277         {
 278                 global $wgOut, $wgRequest;
 279                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 280
 281                 $oldimage = $wgRequest->getText( 'oldimage' );
 282
 283                 if ( strlen( $oldimage ) < 16 ) {
 284                         $wgOut->unexpectedValueError( 'oldimage', $oldimage );
 285                         return;
 286                 }
 287                 if ( wfReadOnly() ) {
 288                         $wgOut->readOnlyPage();
 289                         return;
 290                 }
 291                 if ( ! $this->mTitle->userCanEdit() ) {
 292                         $wgOut->sysopRequired();
 293                         return;
 294                 }
 295                 $name = substr( $oldimage, 15 );
 296
 297                 $dest = wfImageDir( $name );
 298                 $archive = wfImageArchiveDir( $name );
 299                 $curfile = "{$dest}/{$name}";
 300
 301                 if ( ! is_file( $curfile ) ) {
 302                         $wgOut->fileNotFoundError( $curfile );
 303                         return;
 304                 }
 305                 $oldver = wfTimestampNow() . "!{$name}";
 306
 307                 $dbr =& wfGetDB( DB_SLAVE );
 308                 $size = $dbr->getField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 309                   $dbr->strencode( $oldimage ) . "'" );
 310
 311                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 312                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 313                         return;
 314                 }
 315                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 316                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 317                 }
 318                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 319                 # Squid purging
 320                 if ( $wgUseSquid ) {
 321                         $urlArr = Array(
 322                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 323                                 $wgInternalServer . Image::wfImageUrl( $name )
 324                         );
 325                         wfPurgeSquidServers($urlArr);
 326                 }
 327
 328                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 329                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 330                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 331                 $wgOut->returnToMain( false );
 332         }
 333 }
 334
 335
 336 ?>