includes/ImagePage.php

   1 <?php
   2
   3 /*
   4         Special handling for image description pages
   5 */
   6
   7 class ImagePage extends Article {
   8
   9         function view() {
  10                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  11                         $this->openShowImage();
  12                 }
  13
  14                 Article::view();
  15
  16                 # If the article we've just shown is in the "Image" namespace,
  17                 # follow it with the history list and link list for the image
  18                 # it describes.
  19
  20                 if ( Namespace::getImage() == $this->mTitle->getNamespace() ) {
  21                         $this->closeShowImage();
  22                         $this->imageHistory();
  23                         $this->imageLinks();
  24                 }
  25         }
  26
  27         function openShowImage()
  28         {
  29                 global $wgOut, $wgUser,$wgRequest;
  30                 $name = $this->mTitle->getText();
  31                 $path = wfImagePath( $name );
  32                 $url   = wfImageUrl( $name );
  33
  34                 if ( file_exists( $path ) ) {
  35                         list($width, $height, $type, $attr) = getimagesize( $path );
  36
  37                         $sk = $wgUser->getSkin();
  38
  39                         if ( $type != "" ) {
  40                                 # image
  41                                 $s = "<div class=\"fullImage\"><img src=\"{$url}\" width=\"{$width}\" height=\"{$height}\"".
  42                                 "alt=\"".$wgRequest->getVal( 'image' )."\" /></div>";
  43                         } else {
  44                                 $s = "<div class=\"fullMedia\">".$sk->makeMediaLink($name,"")."</div>";
  45                         }
  46                         $wgOut->addHTML( $s );
  47                 }
  48         }
  49
  50         function closeShowImage()
  51         {
  52                 # For overloading
  53         }
  54
  55         # If the page we've just displayed is in the "Image" namespace,
  56         # we follow it with an upload history of the image and its usage.
  57
  58         function imageHistory()
  59         {
  60                 global $wgUser, $wgOut, $wgLang;
  61                 $fname = "Article::imageHistory";
  62
  63                 $sql = "SELECT img_size,img_description,img_user," .
  64                   "img_user_text,img_timestamp FROM image WHERE " .
  65                   "img_name='" . wfStrencode( $this->mTitle->getDBkey() ) . "'";
  66                 $res = wfQuery( $sql, DB_READ, $fname );
  67
  68                 if ( 0 == wfNumRows( $res ) ) { return; }
  69
  70                 $sk = $wgUser->getSkin();
  71                 $s = $sk->beginImageHistoryList();
  72
  73                 $line = wfFetchObject( $res );
  74                 $s .= $sk->imageHistoryLine( true, $line->img_timestamp,
  75                   $this->mTitle->getText(),  $line->img_user,
  76                   $line->img_user_text, $line->img_size, $line->img_description );
  77
  78                 $sql = "SELECT oi_size,oi_description,oi_user," .
  79                   "oi_user_text,oi_timestamp,oi_archive_name FROM oldimage WHERE " .
  80                   "oi_name='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
  81                   "ORDER BY oi_timestamp DESC";
  82                 $res = wfQuery( $sql, DB_READ, $fname );
  83
  84                 while ( $line = wfFetchObject( $res ) ) {
  85                         $s .= $sk->imageHistoryLine( false, $line->oi_timestamp,
  86                           $line->oi_archive_name, $line->oi_user,
  87                           $line->oi_user_text, $line->oi_size, $line->oi_description );
  88                 }
  89                 $s .= $sk->endImageHistoryList();
  90                 $wgOut->addHTML( $s );
  91         }
  92
  93         function imageLinks()
  94         {
  95                 global $wgUser, $wgOut;
  96
  97                 $wgOut->addHTML( "<h2>" . wfMsg( "imagelinks" ) . "</h2>\n" );
  98
  99                 $sql = "SELECT cur_namespace,cur_title FROM imagelinks,cur WHERE il_to='" .
 100                   wfStrencode( $this->mTitle->getDBkey() ) . "' AND il_from=cur_id";
 101                 $res = wfQuery( $sql, DB_READ, "Article::imageLinks" );
 102
 103                 if ( 0 == wfNumRows( $res ) ) {
 104                         $wgOut->addHtml( "<p>" . wfMsg( "nolinkstoimage" ) . "</p>\n" );
 105                         return;
 106                 }
 107                 $wgOut->addHTML( "<p>" . wfMsg( "linkstoimage" ) .  "</p>\n<ul>" );
 108
 109                 $sk = $wgUser->getSkin();
 110                 while ( $s = wfFetchObject( $res ) ) {
 111                         $name = Title::MakeTitle( $s->cur_namespace, $s->cur_title );
 112                         $link = $sk->makeKnownLinkObj( $name, "" );
 113                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 114                 }
 115                 $wgOut->addHTML( "</ul>\n" );
 116         }
 117
 118         function delete()
 119         {
 120                 global $wgUser, $wgOut, $wgRequest;
 121
 122                 $confirm = $wgRequest->getBool( 'wpConfirm' );
 123                 $image = $wgRequest->getVal( 'image' );
 124                 $oldimage = $wgRequest->getVal( 'oldimage' );
 125
 126                 # Only sysops can delete images. Previously ordinary users could delete
 127                 # old revisions, but this is no longer the case.
 128                 if ( !$wgUser->isSysop() ) {
 129                         $wgOut->sysopRequired();
 130                         return;
 131                 }
 132                 if ( wfReadOnly() ) {
 133                         $wgOut->readOnlyPage();
 134                         return;
 135                 }
 136
 137                 # Better double-check that it hasn't been deleted yet!
 138                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
 139                 if ( !is_null( $image ) ) {
 140                         if ( "" == trim( $image ) ) {
 141                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
 142                                 return;
 143                         }
 144                 }
 145
 146                 # Deleting old images doesn't require confirmation
 147                 if ( !is_null( $oldimage ) || $confirm ) {
 148                         $this->doDelete();
 149                         return;
 150                 }
 151
 152                 if ( !is_null( $image ) ) {
 153                         $q = "&image={$image}";
 154                 } else if ( !is_null( $oldimage ) ) {
 155                         $q = "&oldimage={$oldimage}";
 156                 } else {
 157                         $q = "";
 158                 }
 159                 return $this->confirmDelete( $q, $wgRequest->getText( 'wpReason' ) );
 160         }
 161
 162         function doDelete()
 163         {
 164                 global $wgOut, $wgUser, $wgLang, $wgRequest;
 165                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 166                 $fname = "Article::doDelete";
 167
 168                 $reason = $wgRequest->getVal( 'wpReason' );
 169                 $image = $wgRequest->getVal( 'image' );
 170                 $oldimage = $wgRequest->getVal( 'oldimage' );
 171
 172                 if ( !is_null( $image ) ) {
 173                         $dest = wfImageDir( $image );
 174                         $archive = wfImageDir( $image );
 175                         if ( ! @unlink( "{$dest}/{$image}" ) ) {
 176                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
 177                                 return;
 178                         }
 179                         $sql = "DELETE FROM image WHERE img_name='" .
 180                           wfStrencode( $image ) . "'";
 181                         wfQuery( $sql, DB_WRITE, $fname );
 182
 183                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
 184                           wfStrencode( $image ) . "'";
 185                         $res = wfQuery( $sql, DB_READ, $fname );
 186
 187                         # Squid purging
 188                         if ( $wgUseSquid ) {
 189                                 $urlArr = Array(
 190                                         $wgInternalServer.wfImageUrl( $image )
 191                                 );
 192                                 wfPurgeSquidServers($urlArr);
 193                         }
 194
 195
 196                         $urlArr = Array();
 197                         while ( $s = wfFetchObject( $res ) ) {
 198                                 $this->doDeleteOldImage( $s->oi_archive_name );
 199                                 $urlArr[] = $wgInternalServer.wfImageArchiveUrl( $s->oi_archive_name );
 200                         }
 201
 202                         # Squid purging, part II
 203                         if ( $wgUseSquid ) {
 204                                 /* this needs to be done after LinksUpdate */
 205                                 $u = new SquidUpdate( $urlArr );
 206                                 array_push( $wgDeferredUpdateList, $u );
 207                         }
 208
 209                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
 210                           wfStrencode( $image ) . "'";
 211                         wfQuery( $sql, DB_WRITE, $fname );
 212
 213                         # Image itself is now gone, and database is cleaned.
 214                         # Now we remove the image description page.
 215
 216                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
 217                         $article = new Article( $nt );
 218                         $article->doDeleteArticle( $reason ); # ignore errors
 219
 220                         $deleted = $image;
 221                 } else if ( !is_null( $oldimage ) ) {
 222                         # Squid purging
 223                         if ( $wgUseSquid ) {
 224                                 $urlArr = Array(
 225                                         $wgInternalServer.wfImageArchiveUrl( $oldimage )
 226                                 );
 227                                 wfPurgeSquidServers($urlArr);
 228                         }
 229                         $this->doDeleteOldImage( $oldimage );
 230                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
 231                           wfStrencode( $oldimage ) . "'";
 232                         wfQuery( $sql, DB_WRITE, $fname );
 233
 234                         $deleted = $oldimage;
 235                 } else {
 236                         $this->doDeleteArticle( $reason ); # ignore errors
 237                         $deleted = $this->mTitle->getPrefixedText();
 238                 }
 239                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 240                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 241
 242                 $sk = $wgUser->getSkin();
 243                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
 244                   Namespace::getWikipedia() ) .
 245                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
 246
 247                 $text = wfMsg( "deletedtext", $deleted, $loglink );
 248
 249                 $wgOut->addHTML( "<p>" . $text . "</p>\n" );
 250                 $wgOut->returnToMain( false );
 251         }
 252
 253         function doDeleteOldImage( $oldimage )
 254         {
 255                 global $wgOut;
 256
 257                 $name = substr( $oldimage, 15 );
 258                 $archive = wfImageArchiveDir( $name );
 259                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
 260                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
 261                 }
 262         }
 263
 264         function revert()
 265         {
 266                 global $wgOut, $wgRequest;
 267                 global $wgUseSquid, $wgInternalServer, $wgDeferredUpdateList;
 268
 269                 $oldimage = $wgRequest->getText( 'oldimage' );
 270
 271                 if ( strlen( $oldimage ) < 16 ) {
 272                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
 273                         return;
 274                 }
 275                 if ( wfReadOnly() ) {
 276                         $wgOut->readOnlyPage();
 277                         return;
 278                 }
 279                 $name = substr( $oldimage, 15 );
 280
 281                 $dest = wfImageDir( $name );
 282                 $archive = wfImageArchiveDir( $name );
 283                 $curfile = "{$dest}/{$name}";
 284
 285                 if ( ! is_file( $curfile ) ) {
 286                         $wgOut->fileNotFoundError( $curfile );
 287                         return;
 288                 }
 289                 $oldver = wfTimestampNow() . "!{$name}";
 290                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
 291                   wfStrencode( $oldimage ) . "'" );
 292
 293                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
 294                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
 295                         return;
 296                 }
 297                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
 298                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
 299                 }
 300                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
 301                 # Squid purging
 302                 if ( $wgUseSquid ) {
 303                         $urlArr = Array(
 304                                 $wgInternalServer.wfImageArchiveUrl( $name ),
 305                                 $wgInternalServer.wfImageUrl( $name )
 306                         );
 307                         wfPurgeSquidServers($urlArr);
 308                 }
 309
 310                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
 311                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 312                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
 313                 $wgOut->returnToMain( false );
 314         }
 315 }
 316
 317 ?>