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| 1 | <?php |
| 2 | /** |
| 3 | * MediaWiki page data importer. |
| 4 | * |
| 5 | * Copyright © 2003,2005 Brooke Vibber <bvibber@wikimedia.org> |
| 6 | * https://www.mediawiki.org/ |
| 7 | * |
| 8 | * @license GPL-2.0-or-later |
| 9 | * @file |
| 10 | * @ingroup SpecialPage |
| 11 | */ |
| 12 | |
| 13 | namespace MediaWiki\Import; |
| 14 | |
| 15 | use MediaWiki\MainConfigNames; |
| 16 | use MediaWiki\MediaWikiServices; |
| 17 | use MediaWiki\Status\Status; |
| 18 | |
| 19 | /** |
| 20 | * Imports a XML dump from a file (either from file upload, files on disk, or HTTP) |
| 21 | * @ingroup SpecialPage |
| 22 | */ |
| 23 | class ImportStreamSource implements ImportSource { |
| 24 | /** @var resource */ |
| 25 | private $mHandle; |
| 26 | |
| 27 | /** |
| 28 | * @param resource $handle |
| 29 | */ |
| 30 | public function __construct( $handle ) { |
| 31 | $this->mHandle = $handle; |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * @return bool |
| 36 | */ |
| 37 | public function atEnd() { |
| 38 | return feof( $this->mHandle ); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * @return string |
| 43 | */ |
| 44 | public function readChunk() { |
| 45 | return fread( $this->mHandle, 32768 ); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * @return bool |
| 50 | */ |
| 51 | public function isSeekable() { |
| 52 | return stream_get_meta_data( $this->mHandle )['seekable'] ?? false; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * @param int $offset |
| 57 | * @return int |
| 58 | */ |
| 59 | public function seek( int $offset ) { |
| 60 | return fseek( $this->mHandle, $offset ); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @param string $filename |
| 65 | * @return Status |
| 66 | */ |
| 67 | public static function newFromFile( $filename ) { |
| 68 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 69 | $file = @fopen( $filename, 'rt' ); |
| 70 | if ( !$file ) { |
| 71 | return Status::newFatal( "importcantopen" ); |
| 72 | } |
| 73 | return Status::newGood( new ImportStreamSource( $file ) ); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * @param string $fieldname |
| 78 | * @return Status |
| 79 | */ |
| 80 | public static function newFromUpload( $fieldname = "xmlimport" ) { |
| 81 | // phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals |
| 82 | $upload =& $_FILES[$fieldname]; |
| 83 | |
| 84 | if ( $upload === null || !$upload['name'] ) { |
| 85 | return Status::newFatal( 'importnofile' ); |
| 86 | } |
| 87 | if ( !empty( $upload['error'] ) ) { |
| 88 | switch ( $upload['error'] ) { |
| 89 | case UPLOAD_ERR_INI_SIZE: |
| 90 | // The uploaded file exceeds the upload_max_filesize directive in php.ini. |
| 91 | return Status::newFatal( 'importuploaderrorsize' ); |
| 92 | case UPLOAD_ERR_FORM_SIZE: |
| 93 | // The uploaded file exceeds the MAX_FILE_SIZE directive that |
| 94 | // was specified in the HTML form. |
| 95 | // FIXME This is probably never used since that directive was removed in 8e91c520? |
| 96 | return Status::newFatal( 'importuploaderrorsize' ); |
| 97 | case UPLOAD_ERR_PARTIAL: |
| 98 | // The uploaded file was only partially uploaded |
| 99 | return Status::newFatal( 'importuploaderrorpartial' ); |
| 100 | case UPLOAD_ERR_NO_TMP_DIR: |
| 101 | // Missing a temporary folder. |
| 102 | return Status::newFatal( 'importuploaderrortemp' ); |
| 103 | // Other error codes get the generic 'importnofile' error message below |
| 104 | } |
| 105 | |
| 106 | } |
| 107 | $fname = $upload['tmp_name']; |
| 108 | if ( is_uploaded_file( $fname ) || defined( 'MW_PHPUNIT_TEST' ) ) { |
| 109 | return self::newFromFile( $fname ); |
| 110 | } else { |
| 111 | return Status::newFatal( 'importnofile' ); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * @param string $url |
| 117 | * @param string $method |
| 118 | * @return Status |
| 119 | */ |
| 120 | public static function newFromURL( $url, $method = 'GET' ) { |
| 121 | $httpImportTimeout = MediaWikiServices::getInstance()->getMainConfig()->get( |
| 122 | MainConfigNames::HTTPImportTimeout ); |
| 123 | wfDebug( __METHOD__ . ": opening $url" ); |
| 124 | # Use the standard HTTP fetch function; it times out |
| 125 | # quicker and sorts out user-agent problems which might |
| 126 | # otherwise prevent importing from large sites, such |
| 127 | # as the Wikimedia cluster, etc. |
| 128 | $data = MediaWikiServices::getInstance()->getHttpRequestFactory()->request( |
| 129 | $method, |
| 130 | $url, |
| 131 | [ |
| 132 | 'followRedirects' => true, |
| 133 | 'timeout' => $httpImportTimeout |
| 134 | ], |
| 135 | __METHOD__ |
| 136 | ); |
| 137 | if ( $data !== null ) { |
| 138 | $file = tmpfile(); |
| 139 | fwrite( $file, $data ); |
| 140 | fflush( $file ); |
| 141 | fseek( $file, 0 ); |
| 142 | return Status::newGood( new ImportStreamSource( $file ) ); |
| 143 | } else { |
| 144 | return Status::newFatal( 'importcantopen' ); |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * @param string $interwiki |
| 150 | * @param string $page |
| 151 | * @param bool $history |
| 152 | * @param bool $templates |
| 153 | * @param int $pageLinkDepth |
| 154 | * @return Status |
| 155 | */ |
| 156 | public static function newFromInterwiki( $interwiki, $page, $history = false, |
| 157 | $templates = false, $pageLinkDepth = 0 |
| 158 | ) { |
| 159 | if ( $page == '' ) { |
| 160 | return Status::newFatal( 'import-noarticle' ); |
| 161 | } |
| 162 | |
| 163 | # Look up the first interwiki prefix, and let the foreign site handle |
| 164 | # subsequent interwiki prefixes |
| 165 | $firstIwPrefix = strtok( $interwiki, ':' ); |
| 166 | $interwikiLookup = MediaWikiServices::getInstance()->getInterwikiLookup(); |
| 167 | $firstIw = $interwikiLookup->fetch( $firstIwPrefix ); |
| 168 | if ( !$firstIw ) { |
| 169 | return Status::newFatal( 'importbadinterwiki' ); |
| 170 | } |
| 171 | |
| 172 | $additionalIwPrefixes = strtok( '' ); |
| 173 | if ( $additionalIwPrefixes ) { |
| 174 | $additionalIwPrefixes .= ':'; |
| 175 | } |
| 176 | # Have to do a DB-key replacement ourselves; otherwise spaces get |
| 177 | # URL-encoded to +, which is wrong in this case. Similar to logic in |
| 178 | # Title::getLocalURL |
| 179 | $link = $firstIw->getURL( strtr( "{$additionalIwPrefixes}Special:Export/$page", |
| 180 | ' ', '_' ) ); |
| 181 | |
| 182 | $params = []; |
| 183 | if ( $history ) { |
| 184 | $params['history'] = 1; |
| 185 | } |
| 186 | if ( $templates ) { |
| 187 | $params['templates'] = 1; |
| 188 | } |
| 189 | if ( $pageLinkDepth ) { |
| 190 | $params['pagelink-depth'] = $pageLinkDepth; |
| 191 | } |
| 192 | |
| 193 | $url = wfAppendQuery( $link, $params ); |
| 194 | # For interwikis, use POST to avoid redirects. |
| 195 | return self::newFromURL( $url, "POST" ); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /** @deprecated class alias since 1.46 */ |
| 200 | class_alias( ImportStreamSource::class, 'ImportStreamSource' ); |