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