includes/ImagePage.php

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