includes/SpecialExport.php

   1 <?php
   2 # Copyright (C) 2003 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19 /**
  20  *
  21  * @addtogroup SpecialPage
  22  */
  23
  24 /**
  25  *
  26  */
  27 function wfSpecialExport( $page = '' ) {
  28         global $wgOut, $wgRequest, $wgExportAllowListContributors;
  29         global $wgExportAllowHistory, $wgExportMaxHistory;
  30
  31         $curonly = true;
  32         if( $wgRequest->wasPosted() ) {
  33                 $page = $wgRequest->getText( 'pages' );
  34                 $curonly = $wgRequest->getCheck( 'curonly' );
  35                 $rawOffset = $wgRequest->getVal( 'offset' );
  36                 if( $rawOffset ) {
  37                         $offset = wfTimestamp( TS_MW, $rawOffset );
  38                 } else {
  39                         $offset = null;
  40                 }
  41                 $limit = $wgRequest->getInt( 'limit' );
  42                 $dir = $wgRequest->getVal( 'dir' );
  43                 $history = array(
  44                         'dir' => 'asc',
  45                         'offset' => false,
  46                         'limit' => $wgExportMaxHistory,
  47                 );
  48                 $historyCheck = $wgRequest->getCheck( 'history' );
  49                 if ( $curonly ) {
  50                         $history = WikiExporter::CURRENT;
  51                 } elseif ( !$historyCheck ) {
  52                         if ( $limit > 0 && $limit < $wgExportMaxHistory ) {
  53                                 $history['limit'] = $limit;
  54                         }
  55                         if ( !is_null( $offset ) ) {
  56                                 $history['offset'] = $offset;
  57                         }
  58                         if ( strtolower( $dir ) == 'desc' ) {
  59                                 $history['dir'] = 'desc';
  60                         }
  61                 }
  62         } else {
  63                 // Default to current-only for GET requests
  64                 $page = $wgRequest->getText( 'pages', $page );
  65                 $historyCheck = $wgRequest->getCheck( 'history' );
  66                 if( $historyCheck ) {
  67                         $history = WikiExporter::FULL;
  68                 } else {
  69                         $history = WikiExporter::CURRENT;
  70                 }
  71         }
  72         if( !$wgExportAllowHistory ) {
  73                 // Override
  74                 $history = WikiExporter::CURRENT;
  75         }
  76
  77         $list_authors = $wgRequest->getCheck( 'listauthors' );
  78         if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
  79
  80         if( $page != '' ) {
  81                 $wgOut->disable();
  82
  83                 // Cancel output buffering and gzipping if set
  84                 // This should provide safer streaming for pages with history
  85                 wfResetOutputBuffers();
  86                 header( "Content-type: application/xml; charset=utf-8" );
  87                 $pages = explode( "\n", $page );
  88
  89                 $db = wfGetDB( DB_SLAVE );
  90                 $exporter = new WikiExporter( $db, $history );
  91                 $exporter->list_authors = $list_authors ;
  92                 $exporter->openStream();
  93
  94                 foreach( $pages as $page ) {
  95                         /*
  96                         if( $wgExportMaxHistory && !$curonly ) {
  97                                 $title = Title::newFromText( $page );
  98                                 if( $title ) {
  99                                         $count = Revision::countByTitle( $db, $title );
 100                                         if( $count > $wgExportMaxHistory ) {
 101                                                 wfDebug( __FUNCTION__ .
 102                                                         ": Skipped $page, $count revisions too big\n" );
 103                                                 continue;
 104                                         }
 105                                 }
 106                         }*/
 107
 108                         #Bug 8824: Only export pages the user can read
 109                         $title = Title::newFromText( $page );
 110                         if( is_null( $title ) ) continue; #TODO: perhaps output an <error> tag or something.
 111                         if( !$title->userCan( 'read' ) ) continue; #TODO: perhaps output an <error> tag or something.
 112
 113                         $exporter->pageByTitle( $title );
 114                 }
 115
 116                 $exporter->closeStream();
 117                 return;
 118         }
 119
 120         $wgOut->addWikiText( wfMsg( "exporttext" ) );
 121         $titleObj = SpecialPage::getTitleFor( "Export" );
 122
 123         $form = wfOpenElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalUrl() ) );
 124         $form .= wfOpenElement( 'textarea', array( 'name' => 'pages', 'cols' => 40, 'rows' => 10 ) ) . '</textarea><br />';
 125         if( $wgExportAllowHistory ) {
 126                 $form .= wfCheck( 'curonly', true, array( 'value' => 'true', 'id' => 'curonly' ) );
 127                 $form .= wfLabel( wfMsg( 'exportcuronly' ), 'curonly' ) . '<br />';
 128         } else {
 129                 $wgOut->addWikiText( wfMsg( 'exportnohistory' ) );
 130         }
 131         $form .= wfHidden( 'action', 'submit' );
 132         $form .= wfSubmitButton( wfMsg( 'export-submit' ) ) . '</form>';
 133         $wgOut->addHtml( $form );
 134 }
 135
 136 ?>