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
  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                 if ( $this->img->exists() ) {
  64
  65                         $sk = $wgUser->getSkin();
  66
  67                         if ( $this->img->getType() != '' ) {
  68                                 # image
  69                                 $width = $this->img->getWidth();
  70                                 $height = $this->img->getHeight();
  71                                 $msg = wfMsg('showbigimage', $width, $height, intval( $this->img->getSize()/1024 ) );
  72                                 if ( $width > $maxWidth ) {
  73                                         $height = floor( $height * $maxWidth / $width );
  74                                         $width  = $maxWidth;
  75                                 }
  76                                 if ( $height > $maxHeight ) {
  77                                         $width = floor( $width * $maxHeight / $height );
  78                                         $height = $maxHeight;
  79                                 }
  80                                 if ( $width != $this->img->getWidth() || $height != $this->img->getHeight() ) {
  81                                         if( $wgUseImageResize ) {
  82                                                 $thumbnail = $this->img->getThumbnail( $width );
  83
  84                                                 if (    ( ! $this->img->mustRender() )
  85                                                      && ( $thumbnail->getSize() > $this->img->getSize() ) ) {
  86                                                         # the thumbnail is bigger thatn the original image.
  87                                                         # show the original image instead of the thumb.
  88                                                         $url = $full_url;
  89                                                         $width = $this->img->getWidth();
  90                                                         $height = $this->img->getHeight();
  91                                                 } else {
  92                                                         $url = $thumbnail->getUrl();
  93                                                 }
  94                                         } else {
  95                                                 # No resize ability? Show the full image, but scale
  96                                                 # it down in the browser so it fits on the page.
  97                                                 $url = $full_url;
  98                                         }
  99                                         $anchoropen  = "<a href=\"{$full_url}\">";
 100                                         $anchorclose = "<br />{$msg}</a>";
 101                                 } else {
 102                                         $url = $full_url;
 103                                 }
 104                                 $s = '<div class="fullImageLink">' . $anchoropen .
 105                                      "<img border=\"0\" src=\"{$url}\" width=\"{$width}\" height=\"{$height}\" alt=\"" .
 106                                      htmlspecialchars( $wgRequest->getVal( 'image' ) ).'" />' . $anchorclose . '</div>';
 107                         } else {
 108                                 $s = "<div class=\"fullMedia\">" . $sk->makeMediaLink( $this->img->getName(),'' ) . '</div>';
 109                         }
 110                         $wgOut->addHTML( $s );
 111                         if($this->img->fromSharedDirectory) {
 112                                 $sharedtext="<div class=\"sharedUploadNotice\">" . wfMsg("sharedupload");
 113                                 if($wgRepositoryBaseUrl) {
 114                                         $sharedtext .= " ". wfMsg("shareduploadwiki",$wgRepositoryBaseUrl . urlencode($this->mTitle->getDBkey()));
 115                                 }
 116                                 $sharedtext.="</div>";
 117                                 $wgOut->addWikiText($sharedtext);
 118                         }
 119                 }
 120         }
 121
 122         function closeShowImage()
 123         {
 124                 # For overloading
 125         }
 126
 127         /**
 128          * If the page we've just displayed is in the "Image" namespace,
 129          * we follow it with an upload history of the image and its usage.
 130          */
 131         function imageHistory()
 132         {
 133                 global $wgUser, $wgOut;
 134
 135                 $sk = $wgUser->getSkin();
 136
 137                 $line = $this->img->nextHistoryLine();
 138
 139                 if ( $line ) {
 140                         $list =& new ImageHistoryList( $sk );
 141                         $s = $list->beginImageHistoryList() .
 142                                 $list->imageHistoryLine( true, $line->img_timestamp,
 143                                         $this->mTitle->getDBkey(),  $line->img_user,
 144                                         $line->img_user_text, $line->img_size, $line->img_description );
 145
 146                         while ( $line = $this->img->nextHistoryLine() ) {
 147                                 $s .= $list->imageHistoryLine( false, $line->img_timestamp,
 148                                 $line->oi_archive_name, $line->img_user,
 149                                 $line->img_user_text, $line->img_size, $line->img_description );
 150                         }
 151                         $s .= $list->endImageHistoryList();
 152                 } else { $s=''; }
 153                 $wgOut->addHTML( $s );
 154         }
 155
 156         function imageLinks()
 157         {
 158                 global $wgUser, $wgOut;
 159
 160                 $wgOut->addHTML( '<h2>' . wfMsg( 'imagelinks' ) . "</h2>\n" );
 161
 162                 $dbr =& wfGetDB( DB_SLAVE );
 163                 $page = $dbr->tableName( 'page' );
 164                 $imagelinks = $dbr->tableName( 'imagelinks' );
 165
 166                 $sql = "SELECT page_namespace,page_title FROM $imagelinks,$page WHERE il_to=" .
 167                   $dbr->addQuotes( $this->mTitle->getDBkey() ) . " AND il_from=page_id"
 168                   . " LIMIT 500"; # quickie emergency brake
 169                 $res = $dbr->query( $sql, DB_SLAVE, "Article::imageLinks" );
 170
 171                 if ( 0 == $dbr->numRows( $res ) ) {
 172                         $wgOut->addHtml( '<p>' . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 173                         return;
 174                 }
 175                 $wgOut->addHTML( '<p>' . wfMsg( 'linkstoimage' ) .  "</p>\n<ul>" );
 176
 177                 $sk = $wgUser->getSkin();
 178                 while ( $s = $dbr->fetchObject( $res ) ) {
 179                         $name = Title::MakeTitle( $s->page_namespace, $s->page_title );
 180                         $link = $sk->makeKnownLinkObj( $name, "" );
 181                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 182                 }
 183                 $wgOut->addHTML( "</ul>\n" );
 184         }
 185
 186         function delete()
 187         {
 188                 global $wgUser, $wgOut, $wgRequest;
 189
 190                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 191                 $image = $wgRequest->getVal( 'image' );
 192                 $oldimage = $wgRequest->getVal( 'oldimage' );
 193
 194                 # Only sysops can delete images. Previously ordinary users could delete
 195                 # old revisions, but this is no longer the case.
 196                 if ( !$wgUser->isAllowed('delete') ) {
 197                         $wgOut->sysopRequired();
 198                         return;
 199                 }
 200                 if ( wfReadOnly() ) {
 201                         $wgOut->readOnlyPage();
 202                         return;
 203                 }
 204
 205                 # Better double-check that it hasn't been deleted yet!
 206                 $wgOut->setPagetitle( wfMsg( 'confirmdelete' ) );
 207                 if ( ( !is_null( $image ) )
 208                   && ( '' == trim( $image ) ) ) {
 209                         $wgOut->fatalError( wfMsg( 'cannotdelete' ) );
 210                         return;
 211                 }
 212
 213                 # Deleting old images doesn't require confirmation
 214                 if ( !is_null( $oldimage ) || $confirm ) {
 215                         $this->doDelete();
 216                         return;
 217                 }
 218
 219                 if ( !is_null( $image ) ) {
 220                         $q = '&image=' . urlencode( $image );
 221                 } else if ( !is_null( $oldimage ) ) {
 222                         $q = '&oldimage=' . urlencode( $oldimage );
 223                 } else {
 224                         $q = '';
 225                 }
 226                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 227         }
 228
 229         function doDelete()
 230         {
 231                 global $wgOut, $wgUser, $wgContLang, $wgRequest;
 232                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 233                 $fname = 'ImagePage::doDelete';
 234
 235                 $reason = $wgRequest->getVal( 'wpReason' );
 236                 $image = $wgRequest->getVal( 'image' );
 237                 $oldimage = $wgRequest->getVal( 'oldimage' );
 238
 239                 $dbw =& wfGetDB( DB_MASTER );
 240
 241                 if ( !is_null( $oldimage ) ) {
 242                         # Squid purging
 243                         if ( $wgUseSquid ) {
 244                                 $urlArr = Array(
 245                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 246                                 );
 247                                 wfPurgeSquidServers($urlArr);
 248                         }
 249                         $this->doDeleteOldImage( $oldimage );
 250                         $dbw->delete( 'oldimage', array( 'oi_archive_name' => $oldimage ) );
 251                         $deleted = $oldimage;
 252                 } else {
 253                         if ( is_null ( $image ) ) {
 254                                 $image = $this->mTitle->getDBkey();
 255                         }
 256                         $dest = wfImageDir( $image );
 257                         $archive = wfImageDir( $image );
 258
 259                         # Delete the image file if it exists; due to sync problems
 260                         # or manual trimming sometimes the file will be missing.
 261                         $targetFile = "{$dest}/{$image}";
 262                         if( file_exists( $targetFile ) && ! @unlink( $targetFile ) ) {
 263                                 # If the deletion operation actually failed, bug out:
 264                                 $wgOut->fileDeleteError( $targetFile );
 265                                 return;
 266                         }
 267                         $dbw->delete( 'image', array( 'img_name' => $image ) );
 268                         $res = $dbw->select( 'oldimage', array( 'oi_archive_name' ), array( 'oi_name' => $image ) );
 269
 270                         # Squid purging
 271                         if ( $wgUseSquid ) {
 272                                 $urlArr = Array(
 273                                         $wgInternalServer . Image::wfImageUrl( $image )
 274                                 );
 275                                 wfPurgeSquidServers($urlArr);
 276                         }
 277
 278
 279                         $urlArr = Array();
 280                         while ( $s = $dbw->fetchObject( $res ) ) {
 281                                 $this->doDeleteOldImage( $s->oi_archive_name );
 282                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 283                         }
 284
 285                         # Squid purging, part II
 286                         if ( $wgUseSquid ) {
 287                                 /* this needs to be done after LinksUpdate */
 288                                 $u = new SquidUpdate( $urlArr );
 289                                 array_push( $wgDeferredUpdateList, $u );
 290                         }
 291
 292                         $dbw->delete( 'oldimage', array( 'oi_name' => $image ) );
 293
 294                         # Image itself is now gone, and database is cleaned.
 295                         # Now we remove the image description page.
 296
 297                         $nt = Title::newFromText( $wgContLang->getNsText( Namespace::getImage() ) . ":" . $image );
 298                         $article = new Article( $nt );
 299                         $article->doDeleteArticle( $reason ); # ignore errors
 300
 301                         $deleted = $image;
 302                 }
 303
 304                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 305                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 306
 307                 $sk = $wgUser->getSkin();
 308                 $loglink = $sk->makeKnownLink( $wgContLang->getNsText(
 309                   Namespace::getWikipedia() ) .
 310                   ':' . wfMsg( 'dellogpage' ), wfMsg( 'deletionlog' ) );
 311
 312                 $text = wfMsg( 'deletedtext', $deleted, $loglink );
 313
 314                 $wgOut->addHTML( '<p>' . $text . "</p>\n" );
 315                 $wgOut->returnToMain( false );
 316         }
 317
 318         function doDeleteOldImage( $oldimage )
 319         {
 320                 global $wgOut;
 321
 322                 $name = substr( $oldimage, 15 );
 323                 $archive = wfImageArchiveDir( $name );
 324
 325                 # Delete the image if it exists. Sometimes the file will be missing
 326                 # due to manual intervention or weird sync problems; treat that
 327                 # condition gracefully and continue to delete the database entry.
 328                 # Also some records may end up with an empty oi_archive_name field
 329                 # if the original file was missing when a new upload was made;
 330                 # don't try to delete the directory then!
 331                 #
 332                 $targetFile = "{$archive}/{$oldimage}";
 333                 if( $oldimage != '' && file_exists( $targetFile ) && !@unlink( $targetFile ) ) {
 334                         # If we actually have a file and can't delete it, throw an error.
 335                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 336                 } else {
 337                         # Log the deletion
 338                         $log = new LogPage( 'delete' );
 339                         $log->addEntry( 'delete', $this->mTitle, wfMsg('deletedrevision',$oldimage) );
 340                 }
 341         }
 342
 343         function revert()
 344         {
 345                 global $wgOut, $wgRequest;
 346                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 347
 348                 $oldimage = $wgRequest->getText( 'oldimage' );
 349                 if ( strlen( $oldimage ) < 16 ) {
 350                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 351                         return;
 352                 }
 353                 if ( strstr( $oldimage, "/" ) || strstr( $oldimage, "\\" ) ) {
 354                         $wgOut->unexpectedValueError( 'oldimage', htmlspecialchars($oldimage) );
 355                         return;
 356                 }
 357
 358                 if ( wfReadOnly() ) {
 359                         $wgOut->readOnlyPage();
 360                         return;
 361                 }
 362                 if ( ! $this->mTitle->userCanEdit() ) {
 363                         $wgOut->sysopRequired();
 364                         return;
 365                 }
 366                 $name = substr( $oldimage, 15 );
 367
 368                 $dest = wfImageDir( $name );
 369                 $archive = wfImageArchiveDir( $name );
 370                 $curfile = "{$dest}/{$name}";
 371
 372                 if ( ! is_file( $curfile ) ) {
 373                         $wgOut->fileNotFoundError( htmlspecialchars( $curfile ) );
 374                         return;
 375                 }
 376                 $oldver = wfTimestampNow() . "!{$name}";
 377
 378                 $dbr =& wfGetDB( DB_SLAVE );
 379                 $size = $dbr->selectField( 'oldimage', 'oi_size', 'oi_archive_name=\'' .
 380                   $dbr->strencode( $oldimage ) . "'" );
 381
 382                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 383                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 384                         return;
 385                 }
 386                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 387                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 388                 }
 389                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 390                 # Squid purging
 391                 if ( $wgUseSquid ) {
 392                         $urlArr = Array(
 393                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 394                                 $wgInternalServer . Image::wfImageUrl( $name )
 395                         );
 396                         wfPurgeSquidServers($urlArr);
 397                 }
 398
 399                 $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
 400                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 401                 $wgOut->addHTML( wfMsg( 'imagereverted' ) );
 402                 $wgOut->returnToMain( false );
 403         }
 404 }
 405
 406 class ImageHistoryList {
 407         function ImageHistoryList( &$skin ) {
 408                 $this->skin =& $skin;
 409         }
 410
 411         function beginImageHistoryList() {
 412                 $s = "\n<h2>" . wfMsg( 'imghistory' ) . "</h2>\n" .
 413                   "<p>" . wfMsg( 'imghistlegend' ) . "</p>\n".'<ul class="special">';
 414                 return $s;
 415         }
 416
 417         function endImageHistoryList() {
 418                 $s = "</ul>\n";
 419                 return $s;
 420         }
 421
 422         function imageHistoryLine( $iscur, $timestamp, $img, $user, $usertext, $size, $description ) {
 423                 global $wgUser, $wgLang, $wgContLang, $wgTitle;
 424
 425                 $datetime = $wgLang->timeanddate( $timestamp, true );
 426                 $del = wfMsg( 'deleteimg' );
 427                 $delall = wfMsg( 'deleteimgcompletely' );
 428                 $cur = wfMsg( 'cur' );
 429
 430                 if ( $iscur ) {
 431                         $url = Image::wfImageUrl( $img );
 432                         $rlink = $cur;
 433                         if ( $wgUser->isAllowed('delete') ) {
 434                                 $link = $wgTitle->escapeLocalURL( 'image=' . $wgTitle->getPartialURL() .
 435                                   '&action=delete' );
 436                                 $style = $this->skin->getInternalLinkAttributes( $link, $delall );
 437
 438                                 $dlink = '<a href="'.$link.'"'.$style.'>'.$delall.'</a>';
 439                         } else {
 440                                 $dlink = $del;
 441                         }
 442                 } else {
 443                         $url = htmlspecialchars( wfImageArchiveUrl( $img ) );
 444                         if( $wgUser->getID() != 0 && $wgTitle->userCanEdit() ) {
 445                                 $rlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 446                                            wfMsg( 'revertimg' ), 'action=revert&oldimage=' .
 447                                            urlencode( $img ) );
 448                                 $dlink = $this->skin->makeKnownLink( $wgTitle->getPrefixedText(),
 449                                            $del, 'action=delete&oldimage=' . urlencode( $img ) );
 450                         } else {
 451                                 # Having live active links for non-logged in users
 452                                 # means that bots and spiders crawling our site can
 453                                 # inadvertently change content. Baaaad idea.
 454                                 $rlink = wfMsg( 'revertimg' );
 455                                 $dlink = $del;
 456                         }
 457                 }
 458                 if ( 0 == $user ) {
 459                         $userlink = $usertext;
 460                 } else {
 461                         $userlink = $this->skin->makeLink( $wgContLang->getNsText( Namespace::getUser() ) .
 462                                        ':'.$usertext, $usertext );
 463                 }
 464                 $nbytes = wfMsg( 'nbytes', $size );
 465                 $style = $this->skin->getInternalLinkAttributes( $url, $datetime );
 466
 467                 $s = "<li> ({$dlink}) ({$rlink}) <a href=\"{$url}\"{$style}>{$datetime}</a>"
 468                   . " . . {$userlink} ({$nbytes})";
 469
 470                 if ( '' != $description && '*' != $description ) {
 471                         $sk=$wgUser->getSkin();
 472                         $s .= $wgContLang->emphasize(' (' . $sk->formatComment($description,$wgTitle) . ')');
 473                 }
 474                 $s .= "</li>\n";
 475                 return $s;
 476         }
 477
 478 }
 479
 480
 481 ?>