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                 $full_url  = $this->img->getViewURL();
  47                 $anchoropen = '';
  48                 $anchorclose = '';
  49                 if ( $wgUseImageResize ) {
  50                         if( $wgUser->getOption( 'imagesize' ) == '' ) {
  51                                 $sizeSel = User::getDefaultOption( 'imagesize' );
  52                         } else {
  53                                 $sizeSel = IntVal( $wgUser->getOption( 'imagesize' ) );
  54                         }
  55                         if( !isset( $wgImageLimits[$sizeSel] ) ) {
  56                                 $sizeSel = User::getDefaultOption( 'imagesize' );
  57                         }
  58                         $max = $wgImageLimits[$sizeSel];
  59                         $maxWidth = $max[0];
  60                         $maxHeight = $max[1];
  61                 }
  62
  63
  64                 if ( $this->img->exists() ) {
  65
  66                         $sk = $wgUser->getSkin();
  67
  68                         if ( $this->img->getType() != '' ) {
  69                                 # image
  70                                 $width = $this->img->getWidth();
  71                                 $height = $this->img->getHeight();
  72                                 $msg = wfMsg('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
  73                                 if ( $width > $maxWidth && $wgUseImageResize ) {
  74                                         $height = floor( $height * $maxWidth / $width );
  75                                         $width  = $maxWidth;
  76                                 }
  77                                 if ( $height > $maxHeight && $wgUseImageResize ) {
  78                                         $width = floor( $width * $maxHeight / $height );
  79                                         $height = $maxHeight;
  80                                 }
  81                                 if ( $width != $this->img->getWidth() || $height != $this->img->getHeight() ) {
  82                                         $url = $this->img->createThumb( $width );
  83                                         $anchoropen  = "<a href=\"{$full_url}\">";
  84                                         $anchorclose = "<br>{$msg}</a>";
  85                                 } else {
  86                                         $url = $full_url;
  87                                 }
  88                                 $s = '<div class="fullImageLink">' . $anchoropen .
  89                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
  90                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>';
  91                         } else {
  92                                 $s = "<div class=\"fullMedia\">" . $sk->makeMediaLink( $this->img->getName(),'' ) . '</div>';
  93                         }
  94                         $wgOut->addHTML( $s );
  95                         if($this->img->fromSharedDirectory) {
  96                                 $sharedtext="<div class=\"sharedUploadNotice\">" . wfMsg("sharedupload");
  97                                 if($wgRepositoryBaseUrl) {
  98                                         $sharedtext .= " ". wfMsg("shareduploadwiki",$wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey()));
  99                                 }
 100                                 $sharedtext.="</div>";
 101                                 $wgOut->addWikiText($sharedtext);
 102                         }
 103                 }
 104         }
 105
 106         function closeShowImage()
 107         {
 108                 # For overloading
 109         }
 110
 111         /**
 112          * If the page we've just displayed is in the "Image" namespace,
 113          * we follow it with an upload history of the image and its usage.
 114          */
 115         function imageHistory()
 116         {
 117                 global $wgUser, $wgOut;
 118
 119                 $sk = $wgUser->getSkin();
 120
 121                 $line = $this->img->nextHistoryLine();
 122
 123                 if ( $line ) {
 124                         $list =& new ImageHistoryList( $sk );
 125                         $s = $list->beginImageHistoryList() .
 126                                 $list->imageHistoryLine( true, $line->img_timestamp,
 127                                         $this->mTitle->getDBkey(),  $line->img_user,
 128                                         $line->img_user_text, $line->img_size, $line->img_description );
 129
 130                         while ( $line = $this->img->nextHistoryLine() ) {
 131                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 132                                 $line->oi_archive_name, $line->img_user,
 133                                 $line->img_user_text, $line->img_size, $line->img_description );
 134                         }
 135                         $s .= $list->endImageHistoryList();
 136                 } else { $s=''; }
 137                 $wgOut->addHTML( $s );
 138         }
 139
 140         function imageLinks()
 141         {
 142                 global $wgUser, $wgOut;
 143
 144                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 145
 146                 $dbr =& wfGetDB( DB_SLAVE );
 147                 $page = $dbr->tableName( 'page' );
 148                 $imagelinks = $dbr->tableName( 'imagelinks' );
 149
 150                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 151                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id"
 152                   . " LIMIT 500"; # quickie emergency brake
 153                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 154
 155                 if ( 0 == $dbr->numRows( $res ) ) {
 156                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 157                         return;
 158                 }
 159                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 160
 161                 $sk = $wgUser->getSkin();
 162                 while ( $s = $dbr->fetchObject( $res ) ) {
 163                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 164                         $link = $sk->makeKnownLinkObj( $name, "" );
 165                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 166                 }
 167                 $wgOut->addHTML( "</ul>\n" );
 168         }
 169
 170         function delete()
 171         {
 172                 global $wgUser, $wgOut, $wgRequest;
 173
 174                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 175                 $image = $wgRequest->getVal( 'image' );
 176                 $oldimage = $wgRequest->getVal( 'oldimage' );
 177
 178                 # Only sysops can delete images. Previously ordinary users could delete
 179                 # old revisions, but this is no longer the case.
 180                 if ( !$wgUser->isAllowed('delete') ) {
 181                         $wgOut->sysopRequired();
 182                         return;
 183                 }
 184                 if ( wfReadOnly() ) {
 185                         $wgOut->readOnlyPage();
 186                         return;
 187                 }
 188
 189                 # Better double-check that it hasn't been deleted yet!
 190                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 191                 if ( ( !is_null( $image ) )
 192                   && ( '' == trim( $image ) ) ) {
 193                         $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 194                         return;
 195                 }
 196
 197                 # Deleting old images doesn't require confirmation
 198                 if ( !is_null( $oldimage ) || $confirm ) {
 199                         $this->doDelete();
 200                         return;
 201                 }
 202
 203                 if ( !is_null( $image ) ) {
 204                         $q = '&image=' . urlencode( $image );
 205                 } else if ( !is_null( $oldimage ) ) {
 206                         $q = '&oldimage=' . urlencode( $oldimage );
 207                 } else {
 208                         $q = '';
 209                 }
 210                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 211         }
 212
 213         function doDelete()
 214         {
 215                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 216                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 217                 $fname = 'ImagePage::doDelete';
 218
 219                 $reason = $wgRequest->getVal( 'wpReason' );
 220                 $image = $wgRequest->getVal( 'image' );
 221                 $oldimage = $wgRequest->getVal( 'oldimage' );
 222
 223                 $dbw =& wfGetDB( DB_MASTER );
 224
 225                 if ( !is_null( $oldimage ) ) {
 226                         # Squid purging
 227                         if ( $wgUseSquid ) {
 228                                 $urlArr = Array(
 229                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 230                                 );
 231                                 wfPurgeSquidServers($urlArr);
 232                         }
 233                         $this->doDeleteOldImage( $oldimage );
 234                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 235                         $deleted = $oldimage;
 236                 } else {
 237                         if ( is_null ( $image ) ) {
 238                                 $image = $this->mTitle->getDBkey();
 239                         }
 240                         $dest = wfImageDir( $image );
 241                         $archive = wfImageDir( $image );
 242
 243                         # Delete the image file if it exists; due to sync problems
 244                         # or manual trimming sometimes the file will be missing.
 245                         $targetFile = "{$dest}/{$image}";
 246                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 247                                 # If the deletion operation actually failed, bug out:
 248                                 $wgOut->fileDeleteError( $targetFile );
 249                                 return;
 250                         }
 251                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 252                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 253
 254                         # Squid purging
 255                         if ( $wgUseSquid ) {
 256                                 $urlArr = Array(
 257                                         $wgInternalServer . Image::wfImageUrl( $image )
 258                                 );
 259                                 wfPurgeSquidServers($urlArr);
 260                         }
 261
 262
 263                         $urlArr = Array();
 264                         while ( $s = $dbw->fetchObject( $res ) ) {
 265                                 $this->doDeleteOldImage( $s->oi_archive_name );
 266                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 267                         }
 268
 269                         # Squid purging, part II
 270                         if ( $wgUseSquid ) {
 271                                 /* this needs to be done after LinksUpdate */
 272                                 $u = new SquidUpdate( $urlArr );
 273                                 array_push( $wgDeferredUpdateList, $u );
 274                         }
 275
 276                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 277
 278                         # Image itself is now gone, and database is cleaned.
 279                         # Now we remove the image description page.
 280
 281                         $nt = Title::newFromText( $wgContLang->getNsText( Namespace::getImage() ) . ":" . $image );
 282                         $article = new Article( $nt );
 283                         $article->doDeleteArticle( $reason ); # ignore errors
 284
 285                         $deleted = $image;
 286                 }
 287
 288                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 289                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 290
 291                 $sk = $wgUser->getSkin();
 292                 $loglink = $sk->makeKnownLink( $wgContLang->getNsText(
 293                   Namespace::getWikipedia() ) .
 294                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 295
 296                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 297
 298                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 299                 $wgOut->returnToMain( false );
 300         }
 301
 302         function doDeleteOldImage( $oldimage )
 303         {
 304                 global $wgOut;
 305
 306                 $name = substr( $oldimage, 15 );
 307                 $archive = wfImageArchiveDir( $name );
 308
 309                 # Delete the image if it exists. Sometimes the file will be missing
 310                 # due to manual intervention or weird sync problems; treat that
 311                 # condition gracefully and continue to delete the database entry.
 312                 # Also some records may end up with an empty oi_archive_name field
 313                 # if the original file was missing when a new upload was made;
 314                 # don't try to delete the directory then!
 315                 #
 316                 $targetFile = "{$archive}/{$oldimage}";
 317                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 318                         # If we actually have a file and can't delete it, throw an error.
 319                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 320                 } else {
 321                         # Log the deletion
 322                         $log = new LogPage( 'delete' );
 323                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 324                 }
 325         }
 326
 327         function revert()
 328         {
 329                 global $wgOut, $wgRequest;
 330                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 331
 332                 $oldimage = $wgRequest->getText( 'oldimage' );
 333                 if ( strlen( $oldimage ) < 16 ) {
 334                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 335                         return;
 336                 }
 337                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 338                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 339                         return;
 340                 }
 341
 342                 if ( wfReadOnly() ) {
 343                         $wgOut->readOnlyPage();
 344                         return;
 345                 }
 346                 if ( ! $this->mTitle->userCanEdit() ) {
 347                         $wgOut->sysopRequired();
 348                         return;
 349                 }
 350                 $name = substr( $oldimage, 15 );
 351
 352                 $dest = wfImageDir( $name );
 353                 $archive = wfImageArchiveDir( $name );
 354                 $curfile = "{$dest}/{$name}";
 355
 356                 if ( ! is_file( $curfile ) ) {
 357                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 358                         return;
 359                 }
 360                 $oldver = wfTimestampNow() . "!{$name}";
 361
 362                 $dbr =& wfGetDB( DB_SLAVE );
 363                 $size = $dbr->selectField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 364                   $dbr->strencode( $oldimage ) . "'" );
 365
 366                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 367                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 368                         return;
 369                 }
 370                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 371                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 372                 }
 373                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 374                 # Squid purging
 375                 if ( $wgUseSquid ) {
 376                         $urlArr = Array(
 377                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 378                                 $wgInternalServer . Image::wfImageUrl( $name )
 379                         );
 380                         wfPurgeSquidServers($urlArr);
 381                 }
 382
 383                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 384                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 385                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 386                 $wgOut->returnToMain( false );
 387         }
 388 }
 389
 390 class ImageHistoryList {
 391         function ImageHistoryList( &$skin ) {
 392                 $this->skin =& $skin;
 393         }
 394
 395         function beginImageHistoryList() {
 396                 $s = "\n<h2>" . wfMsg( 'imghistory' ) . "</h2>\n" .
 397                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 398                 return $s;
 399         }
 400
 401         function endImageHistoryList() {
 402                 $s = "</ul>\n";
 403                 return $s;
 404         }
 405
 406         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description ) {
 407                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 408
 409                 $datetime = $wgLang->timeanddate( $timestamp, true );
 410                 $del = wfMsg( 'deleteimg' );
 411                 $delall = wfMsg( 'deleteimgcompletely' );
 412                 $cur = wfMsg( 'cur' );
 413
 414                 if ( $iscur ) {
 415                         $url = Image::wfImageUrl( $img );
 416                         $rlink = $cur;
 417                         if ( $wgUser->isAllowed('delete') ) {
 418                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 419                                   '&action=delete' );
 420                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 421
 422                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 423                         } else {
 424                                 $dlink = $del;
 425                         }
 426                 } else {
 427                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 428                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 429                                 $rlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 430                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 431                                            urlencode( $img ) );
 432                                 $dlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 433                                            $del, 'action=delete&oldimage=' . urlencode( $img ) );
 434                         } else {
 435                                 # Having live active links for non-logged in users
 436                                 # means that bots and spiders crawling our site can
 437                                 # inadvertently change content. Baaaad idea.
 438                                 $rlink = wfMsg( 'revertimg' );
 439                                 $dlink = $del;
 440                         }
 441                 }
 442                 if ( 0 == $user ) {
 443                         $userlink = $usertext;
 444                 } else {
 445                         $userlink = $this->skin->makeLink( $wgContLang->getNsText( Namespace::getUser() ) .
 446                                        ':'.$usertext, $usertext );
 447                 }
 448                 $nbytes = wfMsg( 'nbytes', $size );
 449                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 450
 451                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a>"
 452                   . " . . {$userlink} ({$nbytes})";
 453
 454                 if ( '' != $description && '*' != $description ) {
 455                         $sk=$wgUser->getSkin();
 456                         $s .= $wgContLang->emphasize(' (' . $sk->formatComment($description,$wgTitle) . ')');
 457                 }
 458                 $s .= "</li>\n";
 459                 return $s;
 460         }
 461
 462 }
 463
 464
 465 ?>