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 function wfExportGetPagesFromCategory( $title ) {
  25         global $wgContLang;
  26
  27         $name = $title->getDBKey();
  28
  29         $dbr = wfGetDB( DB_SLAVE );
  30
  31         list( $page, $categorylinks ) = $dbr->tableNamesN( 'page', 'categorylinks' );
  32         $sql = "SELECT page_namespace, page_title FROM $page " .
  33                 "JOIN $categorylinks ON cl_from = page_id " .
  34                 "WHERE cl_to = " . $dbr->addQuotes( $name );
  35
  36         $pages = array();
  37         $res = $dbr->query( $sql, 'wfExportGetPagesFromCategory' );
  38         while ( $row = $dbr->fetchObject( $res ) ) {
  39                 $n = $row->page_title;
  40                 if ($row->page_namespace) {
  41                         $ns = $wgContLang->getNsText( $row->page_namespace );
  42                         $n = $ns . ':' . $n;
  43                 }
  44
  45                 $pages[] = $n;
  46         }
  47         $dbr->freeResult($res);
  48
  49         return $pages;
  50 }
  51
  52 /**
  53  *
  54  */
  55 function wfSpecialExport( $page = '' ) {
  56         global $wgOut, $wgRequest, $wgSitename, $wgExportAllowListContributors;
  57         global $wgExportAllowHistory, $wgExportMaxHistory;
  58
  59         $curonly = true;
  60         $doexport = false;
  61
  62         if ( $wgRequest->getCheck( 'addcat' ) ) {
  63                 $page = $wgRequest->getText( 'pages' );
  64                 $catname = $wgRequest->getText( 'catname' );
  65
  66                 if ( $catname !== '' && $catname !== NULL && $catname !== false ) {
  67                         $t = Title::makeTitleSafe( NS_CATEGORY, $catname );
  68                         if ( $t ) {
  69                                 $catpages = wfExportGetPagesFromCategory( $t );
  70                                 if ( $catpages ) $page .= "\n" . implode( "\n", $catpages );
  71                         }
  72                 }
  73         }
  74         else if( $wgRequest->wasPosted() && $page == '' ) {
  75                 $page = $wgRequest->getText( 'pages' );
  76                 $curonly = $wgRequest->getCheck( 'curonly' );
  77                 $rawOffset = $wgRequest->getVal( 'offset' );
  78                 if( $rawOffset ) {
  79                         $offset = wfTimestamp( TS_MW, $rawOffset );
  80                 } else {
  81                         $offset = null;
  82                 }
  83                 $limit = $wgRequest->getInt( 'limit' );
  84                 $dir = $wgRequest->getVal( 'dir' );
  85                 $history = array(
  86                         'dir' => 'asc',
  87                         'offset' => false,
  88                         'limit' => $wgExportMaxHistory,
  89                 );
  90                 $historyCheck = $wgRequest->getCheck( 'history' );
  91                 if ( $curonly ) {
  92                         $history = WikiExporter::CURRENT;
  93                 } elseif ( !$historyCheck ) {
  94                         if ( $limit > 0 && $limit < $wgExportMaxHistory ) {
  95                                 $history['limit'] = $limit;
  96                         }
  97                         if ( !is_null( $offset ) ) {
  98                                 $history['offset'] = $offset;
  99                         }
 100                         if ( strtolower( $dir ) == 'desc' ) {
 101                                 $history['dir'] = 'desc';
 102                         }
 103                 }
 104
 105                 if( $page != '' ) $doexport = true;
 106         } else {
 107                 // Default to current-only for GET requests
 108                 $page = $wgRequest->getText( 'pages', $page );
 109                 $historyCheck = $wgRequest->getCheck( 'history' );
 110                 if( $historyCheck ) {
 111                         $history = WikiExporter::FULL;
 112                 } else {
 113                         $history = WikiExporter::CURRENT;
 114                 }
 115
 116                 if( $page != '' ) $doexport = true;
 117         }
 118
 119         if( !$wgExportAllowHistory ) {
 120                 // Override
 121                 $history = WikiExporter::CURRENT;
 122         }
 123
 124         $list_authors = $wgRequest->getCheck( 'listauthors' );
 125         if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
 126
 127         if ( $doexport ) {
 128                 $wgOut->disable();
 129
 130                 // Cancel output buffering and gzipping if set
 131                 // This should provide safer streaming for pages with history
 132                 wfResetOutputBuffers();
 133                 header( "Content-type: application/xml; charset=utf-8" );
 134                 if( $wgRequest->getCheck( 'wpDownload' ) ) {
 135                         // Provide a sane filename suggestion
 136                         $filename = urlencode( $wgSitename . '-' . wfTimestampNow() . '.xml' );
 137                         $wgRequest->response()->header( "Content-disposition: attachment;filename={$filename}" );
 138                 }
 139                 $pages = explode( "\n", $page );
 140
 141                 $db = wfGetDB( DB_SLAVE );
 142                 $exporter = new WikiExporter( $db, $history );
 143                 $exporter->list_authors = $list_authors ;
 144                 $exporter->openStream();
 145
 146                 foreach( $pages as $page ) {
 147                         /*
 148                         if( $wgExportMaxHistory && !$curonly ) {
 149                                 $title = Title::newFromText( $page );
 150                                 if( $title ) {
 151                                         $count = Revision::countByTitle( $db, $title );
 152                                         if( $count > $wgExportMaxHistory ) {
 153                                                 wfDebug( __FUNCTION__ .
 154                                                         ": Skipped $page, $count revisions too big\n" );
 155                                                 continue;
 156                                         }
 157                                 }
 158                         }*/
 159
 160                         #Bug 8824: Only export pages the user can read
 161                         $title = Title::newFromText( $page );
 162                         if( is_null( $title ) ) continue; #TODO: perhaps output an <error> tag or something.
 163                         if( !$title->userCan( 'read' ) ) continue; #TODO: perhaps output an <error> tag or something.
 164
 165                         $exporter->pageByTitle( $title );
 166                 }
 167
 168                 $exporter->closeStream();
 169                 return;
 170         }
 171
 172         $self = SpecialPage::getTitleFor( 'Export' );
 173         $wgOut->addHtml( wfMsgExt( 'exporttext', 'parse' ) );
 174
 175         $form = Xml::openElement( 'form', array( 'method' => 'post',
 176                 'action' => $self->getLocalUrl( 'action=submit' ) ) );
 177
 178         $form .= Xml::inputLabel( wfMsg( 'export-addcattext' )  , 'catname', 'catname', 40 ) . '&nbsp;';
 179         $form .= Xml::submitButton( wfMsg( 'export-addcat' ), array( 'name' => 'addcat' ) ) . '<br />';
 180
 181         $form .= Xml::openElement( 'textarea', array( 'name' => 'pages', 'cols' => 40, 'rows' => 10 ) );
 182         $form .= htmlspecialchars( $page );
 183         $form .= Xml::closeElement( 'textarea' );
 184         $form .= '<br />';
 185
 186         if( $wgExportAllowHistory ) {
 187                 $form .= Xml::checkLabel( wfMsg( 'exportcuronly' ), 'curonly', 'curonly', true ) . '<br />';
 188         } else {
 189                 $wgOut->addHtml( wfMsgExt( 'exportnohistory', 'parse' ) );
 190         }
 191         $form .= Xml::checkLabel( wfMsg( 'export-download' ), 'wpDownload', 'wpDownload', true ) . '<br />';
 192
 193         $form .= Xml::submitButton( wfMsg( 'export-submit' ) );
 194         $form .= Xml::closeElement( 'form' );
 195         $wgOut->addHtml( $form );
 196 }