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<?php
/**
* MediaWiki page data importer.
*
* Copyright © 2003,2005 Brion Vibber <brion@pobox.com>
* https://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
/**
* Imports a XML dump from a file (either from file upload, files on disk, or HTTP)
* @ingroup SpecialPage
*/
class ImportStreamSource implements ImportSource {
function __construct( $handle ) {
$this->mHandle = $handle;
}
/**
* @return bool
*/
function atEnd() {
return feof( $this->mHandle );
}
/**
* @return string
*/
function readChunk() {
return fread( $this->mHandle, 32768 );
}
/**
* @param string $filename
* @return Status
*/
static function newFromFile( $filename ) {
MediaWiki\suppressWarnings();
$file = fopen( $filename, 'rt' );
MediaWiki\restoreWarnings();
if ( !$file ) {
return Status::newFatal( "importcantopen" );
}
return Status::newGood( new ImportStreamSource( $file ) );
}
/**
* @param string $fieldname
* @return Status
*/
static function newFromUpload( $fieldname = "xmlimport" ) {
$upload =& $_FILES[$fieldname];
if ( $upload === null || !$upload['name'] ) {
return Status::newFatal( 'importnofile' );
}
if ( !empty( $upload['error'] ) ) {
switch ( $upload['error'] ) {
case 1:
# The uploaded file exceeds the upload_max_filesize directive in php.ini.
return Status::newFatal( 'importuploaderrorsize' );
case 2:
# The uploaded file exceeds the MAX_FILE_SIZE directive that
# was specified in the HTML form.
return Status::newFatal( 'importuploaderrorsize' );
case 3:
# The uploaded file was only partially uploaded
return Status::newFatal( 'importuploaderrorpartial' );
case 6:
# Missing a temporary folder.
return Status::newFatal( 'importuploaderrortemp' );
# case else: # Currently impossible
}
}
$fname = $upload['tmp_name'];
if ( is_uploaded_file( $fname ) ) {
return ImportStreamSource::newFromFile( $fname );
} else {
return Status::newFatal( 'importnofile' );
}
}
/**
* @param string $url
* @param string $method
* @return Status
*/
static function newFromURL( $url, $method = 'GET' ) {
wfDebug( __METHOD__ . ": opening $url\n" );
# Use the standard HTTP fetch function; it times out
# quicker and sorts out user-agent problems which might
# otherwise prevent importing from large sites, such
# as the Wikimedia cluster, etc.
$data = Http::request( $method, $url, [ 'followRedirects' => true ], __METHOD__ );
if ( $data !== false ) {
$file = tmpfile();
fwrite( $file, $data );
fflush( $file );
fseek( $file, 0 );
return Status::newGood( new ImportStreamSource( $file ) );
} else {
return Status::newFatal( 'importcantopen' );
}
}
/**
* @param string $interwiki
* @param string $page
* @param bool $history
* @param bool $templates
* @param int $pageLinkDepth
* @return Status
*/
public static function newFromInterwiki( $interwiki, $page, $history = false,
$templates = false, $pageLinkDepth = 0
) {
if ( $page == '' ) {
return Status::newFatal( 'import-noarticle' );
}
# Look up the first interwiki prefix, and let the foreign site handle
# subsequent interwiki prefixes
$firstIwPrefix = strtok( $interwiki, ':' );
$firstIw = Interwiki::fetch( $firstIwPrefix );
if ( !$firstIw ) {
return Status::newFatal( 'importbadinterwiki' );
}
$additionalIwPrefixes = strtok( '' );
if ( $additionalIwPrefixes ) {
$additionalIwPrefixes .= ':';
}
# Have to do a DB-key replacement ourselves; otherwise spaces get
# URL-encoded to +, which is wrong in this case. Similar to logic in
# Title::getLocalURL
$link = $firstIw->getURL( strtr( "${additionalIwPrefixes}Special:Export/$page",
' ', '_' ) );
$params = [];
if ( $history ) {
$params['history'] = 1;
}
if ( $templates ) {
$params['templates'] = 1;
}
if ( $pageLinkDepth ) {
$params['pagelink-depth'] = $pageLinkDepth;
}
$url = wfAppendQuery( $link, $params );
# For interwikis, use POST to avoid redirects.
return ImportStreamSource::newFromURL( $url, "POST" );
}
}