includes/ImagePage.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  */
   5
   6 /**
   7  *
   8  */
   9 if( !defined( 'MEDIAWIKI' ) )
  10         die();
  11
  12 require_once( 'Image.php' );
  13
  14 /**
  15  * Special handling for image description pages
  16  * @package MediaWiki
  17  */
  18 class ImagePage extends Article {
  19
  20         /* private */ var $img;  // Image object this page is shown for. Initilaized in openShowImage, not
  21                                  // available in doDelete etc.
  22
  23         function view() {
  24                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  25                         $this->openShowImage();
  26                 }
  27
  28                 Article::view();
  29
  30                 # If the article we've just shown is in the "Image" namespace,
  31                 # follow it with the history list and link list for the image
  32                 # it describes.
  33
  34                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  35                         $this->closeShowImage();
  36                         $this->imageHistory();
  37                         $this->imageLinks();
  38                 }
  39         }
  40
  41         function openShowImage()
  42         {
  43                 global $wgOut, $wgUser, $wgImageLimits, $wgRequest,
  44                        $wgUseImageResize, $wgRepositoryBaseUrl;
  45                 $this->img  = Image::newFromTitle( $this->mTitle );
  46                 $url  = $this->img->getViewURL();
  47                 $anchoropen = '';
  48                 $anchorclose = '';
  49                 if ( $wgUseImageResize && $wgUser->getOption( 'imagesize' ) != '' ) {
  50                         $max = $wgImageLimits[ intval( $wgUser->getOption( 'imagesize' ) ) ];
  51                         $maxWidth = $max[0];
  52                         $maxHeight = $max[1];
  53                 }
  54
  55
  56                 if ( $this->img->exists() ) {
  57
  58                         $sk = $wgUser->getSkin();
  59
  60                         if ( $this->img->getType() != '' ) {
  61                                 # image
  62                                 $width = $this->img->getWidth();
  63                                 $height = $this->img->getHeight();
  64                                 $msg = wfMsg('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
  65                                 if ( $width > $maxWidth && $wgUseImageResize ) {
  66                                         $anchoropen  = "<a href=\"{$url}\">";
  67                                         $anchorclose = "<br>{$msg}</a>";
  68
  69                                         $url = $this->img->createThumb( $maxWidth );
  70                                         $height = floor( $height * $maxWidth / $width );
  71                                         $width  = $maxWidth;
  72                                 }
  73                                 if ( $height > $maxHeight && $wgUseImageResize ) {
  74                                         $anchoropen  = "<a href=\"{$url}\">";
  75                                         $anchorclose = "<br>{$msg}</a>";
  76
  77                                         $width = floor( $width * $maxHeight / $height );
  78                                         $height = $maxHeight;
  79                                         $url = $this->img->createThumb( $width );
  80                                 }
  81                                 $s = "<div class=\"fullImageLink\">" . $anchoropen .
  82                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
  83                                      htmlspecialchars( $wgRequest->getVal( 'image' ) )."\" />" . $anchorclose . "</div>";
  84                         } else {
  85                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($this->img->getName(),"")."</div>";
  86                         }
  87                         $wgOut->addHTML( $s );
  88                         if($this->img->fromSharedDirectory) {
  89                                 $sharedtext="<div class=\"sharedUploadNotice\">" . wfMsg("sharedupload");
  90                                 if($wgRepositoryBaseUrl) {
  91                                         $sharedtext .= " ". wfMsg("shareduploadwiki",$wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey()));
  92                                 }
  93                                 $sharedtext.="</div>";
  94                                 $wgOut->addWikiText($sharedtext);
  95                         }
  96                 }
  97         }
  98
  99         function closeShowImage()
 100         {
 101                 # For overloading
 102         }
 103
 104         /**
 105          * If the page we've just displayed is in the "Image" namespace,
 106          * we follow it with an upload history of the image and its usage.
 107          */
 108         function imageHistory()
 109         {
 110                 global $wgUser, $wgOut;
 111
 112                 $sk = $wgUser->getSkin();
 113
 114                 $line = $this->img->nextHistoryLine();
 115
 116                 if ( $line ) {
 117                         $list =& new ImageHistoryList( $sk );
 118                         $s = $list->beginImageHistoryList() .
 119                                 $list->imageHistoryLine( true, $line->img_timestamp,
 120                                         $this->mTitle->getDBkey(),  $line->img_user,
 121                                         $line->img_user_text, $line->img_size, $line->img_description );
 122
 123                         while ( $line = $this->img->nextHistoryLine() ) {
 124                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 125                                 $line->oi_archive_name, $line->img_user,
 126                                 $line->img_user_text, $line->img_size, $line->img_description );
 127                         }
 128                         $s .= $list->endImageHistoryList();
 129                 } else { $s=''; }
 130                 $wgOut->addHTML( $s );
 131         }
 132
 133         function imageLinks()
 134         {
 135                 global $wgUser, $wgOut;
 136
 137                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 138
 139                 $dbr =& wfGetDB( DB_SLAVE );
 140                 $cur = $dbr->tableName( 'cur' );
 141                 $imagelinks = $dbr->tableName( 'imagelinks' );
 142
 143                 $sql = "SELECT cur_namespace,cur_title FROM $imagelinks,$cur WHERE il_to=" .
 144                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=cur_id"
 145                   . " LIMIT 500"; # quickie emergency brake
 146                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 147
 148                 if ( 0 == $dbr->numRows( $res ) ) {
 149                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 150                         return;
 151                 }
 152                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 153
 154                 $sk = $wgUser->getSkin();
 155                 while ( $s = $dbr->fetchObject( $res ) ) {
 156                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 157                         $link = $sk->makeKnownLinkObj( $name, "" );
 158                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 159                 }
 160                 $wgOut->addHTML( "</ul>\n" );
 161         }
 162
 163         function delete()
 164         {
 165                 global $wgUser, $wgOut, $wgRequest;
 166
 167                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 168                 $image = $wgRequest->getVal( 'image' );
 169                 $oldimage = $wgRequest->getVal( 'oldimage' );
 170
 171                 # Only sysops can delete images. Previously ordinary users could delete
 172                 # old revisions, but this is no longer the case.
 173                 if ( !$wgUser->isAllowed('delete') ) {
 174                         $wgOut->sysopRequired();
 175                         return;
 176                 }
 177                 if ( wfReadOnly() ) {
 178                         $wgOut->readOnlyPage();
 179                         return;
 180                 }
 181
 182                 # Better double-check that it hasn't been deleted yet!
 183                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 184                 if ( !is_null( $image ) ) {
 185                         if ( '' == trim( $image ) ) {
 186                                 $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 187                                 return;
 188                         }
 189                 }
 190
 191                 # Deleting old images doesn't require confirmation
 192                 if ( !is_null( $oldimage ) || $confirm ) {
 193                         $this->doDelete();
 194                         return;
 195                 }
 196
 197                 if ( !is_null( $image ) ) {
 198                         $q = '&image=' . urlencode( $image );
 199                 } else if ( !is_null( $oldimage ) ) {
 200                         $q = '&oldimage=' . urlencode( $oldimage );
 201                 } else {
 202                         $q = '';
 203                 }
 204                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 205         }
 206
 207         function doDelete()
 208         {
 209                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 210                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 211                 $fname = 'ImagePage::doDelete';
 212
 213                 $reason = $wgRequest->getVal( 'wpReason' );
 214                 $image = $wgRequest->getVal( 'image' );
 215                 $oldimage = $wgRequest->getVal( 'oldimage' );
 216
 217                 $dbw =& wfGetDB( DB_MASTER );
 218
 219                 if ( !is_null( $oldimage ) ) {
 220                         # Squid purging
 221                         if ( $wgUseSquid ) {
 222                                 $urlArr = Array(
 223                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 224                                 );
 225                                 wfPurgeSquidServers($urlArr);
 226                         }
 227                         $this->doDeleteOldImage( $oldimage );
 228                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 229                         $deleted = $oldimage;
 230                 } else {
 231                         if ( is_null ( $image ) ) {
 232                                 $image = $this->mTitle->getDBkey();
 233                         }
 234                         $dest = wfImageDir( $image );
 235                         $archive = wfImageDir( $image );
 236
 237                         # Delete the image file if it exists; due to sync problems
 238                         # or manual trimming sometimes the file will be missing.
 239                         $targetFile = "{$dest}/{$image}";
 240                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 241                                 # If the deletion operation actually failed, bug out:
 242                                 $wgOut->fileDeleteError( $targetFile );
 243                                 return;
 244                         }
 245                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 246                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 247
 248                         # Squid purging
 249                         if ( $wgUseSquid ) {
 250                                 $urlArr = Array(
 251                                         $wgInternalServer . Image::wfImageUrl( $image )
 252                                 );
 253                                 wfPurgeSquidServers($urlArr);
 254                         }
 255
 256
 257                         $urlArr = Array();
 258                         while ( $s = $dbw->fetchObject( $res ) ) {
 259                                 $this->doDeleteOldImage( $s->oi_archive_name );
 260                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 261                         }
 262
 263                         # Squid purging, part II
 264                         if ( $wgUseSquid ) {
 265                                 /* this needs to be done after LinksUpdate */
 266                                 $u = new SquidUpdate( $urlArr );
 267                                 array_push( $wgDeferredUpdateList, $u );
 268                         }
 269
 270                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 271
 272                         # Image itself is now gone, and database is cleaned.
 273                         # Now we remove the image description page.
 274
 275                         $nt = Title::newFromText( $wgContLang->getNsText( Namespace::getImage() ) . ":" . $image );
 276                         $article = new Article( $nt );
 277                         $article->doDeleteArticle( $reason ); # ignore errors
 278
 279                         $deleted = $image;
 280                 }
 281
 282                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 283                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 284
 285                 $sk = $wgUser->getSkin();
 286                 $loglink = $sk->makeKnownLink( $wgContLang->getNsText(
 287                   Namespace::getWikipedia() ) .
 288                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 289
 290                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 291
 292                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 293                 $wgOut->returnToMain( false );
 294         }
 295
 296         function doDeleteOldImage( $oldimage )
 297         {
 298                 global $wgOut;
 299
 300                 $name = substr( $oldimage, 15 );
 301                 $archive = wfImageArchiveDir( $name );
 302
 303                 # Delete the image if it exists. Sometimes the file will be missing
 304                 # due to manual intervention or weird sync problems; treat that
 305                 # condition gracefully and continue to delete the database entry.
 306                 # Also some records may end up with an empty oi_archive_name field
 307                 # if the original file was missing when a new upload was made;
 308                 # don't try to delete the directory then!
 309                 #
 310                 $targetFile = "{$archive}/{$oldimage}";
 311                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 312                         # If we actually have a file and can't delete it, throw an error.
 313                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 314                 } else {
 315                         # Log the deletion
 316                         $log = new LogPage( 'delete' );
 317                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 318                 }
 319         }
 320
 321         function revert()
 322         {
 323                 global $wgOut, $wgRequest;
 324                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 325
 326                 $oldimage = $wgRequest->getText( 'oldimage' );
 327                 if ( strlen( $oldimage ) < 16 ) {
 328                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 329                         return;
 330                 }
 331                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 332                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 333                         return;
 334                 }
 335
 336                 if ( wfReadOnly() ) {
 337                         $wgOut->readOnlyPage();
 338                         return;
 339                 }
 340                 if ( ! $this->mTitle->userCanEdit() ) {
 341                         $wgOut->sysopRequired();
 342                         return;
 343                 }
 344                 $name = substr( $oldimage, 15 );
 345
 346                 $dest = wfImageDir( $name );
 347                 $archive = wfImageArchiveDir( $name );
 348                 $curfile = "{$dest}/{$name}";
 349
 350                 if ( ! is_file( $curfile ) ) {
 351                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 352                         return;
 353                 }
 354                 $oldver = wfTimestampNow() . "!{$name}";
 355
 356                 $dbr =& wfGetDB( DB_SLAVE );
 357                 $size = $dbr->selectField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 358                   $dbr->strencode( $oldimage ) . "'" );
 359
 360                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 361                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 362                         return;
 363                 }
 364                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 365                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 366                 }
 367                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 368                 # Squid purging
 369                 if ( $wgUseSquid ) {
 370                         $urlArr = Array(
 371                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 372                                 $wgInternalServer . Image::wfImageUrl( $name )
 373                         );
 374                         wfPurgeSquidServers($urlArr);
 375                 }
 376
 377                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 378                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 379                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 380                 $wgOut->returnToMain( false );
 381         }
 382 }
 383
 384 class ImageHistoryList {
 385         function ImageHistoryList( &$skin ) {
 386                 $this->skin =& $skin;
 387         }
 388
 389         function beginImageHistoryList() {
 390                 $s = "\n<h2>" . wfMsg( 'imghistory' ) . "</h2>\n" .
 391                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 392                 return $s;
 393         }
 394
 395         function endImageHistoryList() {
 396                 $s = "</ul>\n";
 397                 return $s;
 398         }
 399
 400         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description ) {
 401                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 402
 403                 $datetime = $wgLang->timeanddate( $timestamp, true );
 404                 $del = wfMsg( 'deleteimg' );
 405                 $delall = wfMsg( 'deleteimgcompletely' );
 406                 $cur = wfMsg( 'cur' );
 407
 408                 if ( $iscur ) {
 409                         $url = Image::wfImageUrl( $img );
 410                         $rlink = $cur;
 411                         if ( $wgUser->isAllowed('delete') ) {
 412                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 413                                   '&action=delete' );
 414                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 415
 416                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 417                         } else {
 418                                 $dlink = $del;
 419                         }
 420                 } else {
 421                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 422                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 423                                 $rlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 424                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 425                                            urlencode( $img ) );
 426                                 $dlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 427                                            $del, 'action=delete&oldimage=' . urlencode( $img ) );
 428                         } else {
 429                                 # Having live active links for non-logged in users
 430                                 # means that bots and spiders crawling our site can
 431                                 # inadvertently change content. Baaaad idea.
 432                                 $rlink = wfMsg( 'revertimg' );
 433                                 $dlink = $del;
 434                         }
 435                 }
 436                 if ( 0 == $user ) {
 437                         $userlink = $usertext;
 438                 } else {
 439                         $userlink = $this->skin->makeLink( $wgContLang->getNsText( Namespace::getUser() ) .
 440                                        ':'.$usertext, $usertext );
 441                 }
 442                 $nbytes = wfMsg( 'nbytes', $size );
 443                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 444
 445                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a>"
 446                   . " . . {$userlink} ({$nbytes})";
 447
 448                 if ( '' != $description && '*' != $description ) {
 449                         $sk=$wgUser->getSkin();
 450                         $s .= $wgContLang->emphasize(' (' . $sk->formatComment($description,$wgTitle) . ')');
 451                 }
 452                 $s .= "</li>\n";
 453                 return $s;
 454         }
 455
 456 }
 457
 458
 459 ?>