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