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