includes/Import.php

   1 <?php
   2 /**
   3  * MediaWiki page data importer
   4  *
   5  * Copyright © 2003,2005 Brion Vibber <brion@pobox.com>
   6  * http://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  * @ingroup SpecialPage
  25  */
  26
  27 /**
  28  * @todo document (e.g. one-sentence class description).
  29  * @ingroup SpecialPage
  30  */
  31 class WikiRevision {
  32         var $title = null;
  33         var $id = 0;
  34         var $timestamp = "20010115000000";
  35         var $user = 0;
  36         var $user_text = "";
  37         var $text = "";
  38         var $comment = "";
  39         var $minor = false;
  40         var $type = "";
  41         var $action = "";
  42         var $params = "";
  43
  44         function setTitle( $title ) {
  45                 if( is_object( $title ) ) {
  46                         $this->title = $title;
  47                 } elseif( is_null( $title ) ) {
  48                         throw new MWException( "WikiRevision given a null title in import. You may need to adjust \$wgLegalTitleChars." );
  49                 } else {
  50                         throw new MWException( "WikiRevision given non-object title in import." );
  51                 }
  52         }
  53
  54         function setID( $id ) {
  55                 $this->id = $id;
  56         }
  57
  58         function setTimestamp( $ts ) {
  59                 # 2003-08-05T18:30:02Z
  60                 $this->timestamp = wfTimestamp( TS_MW, $ts );
  61         }
  62
  63         function setUsername( $user ) {
  64                 $this->user_text = $user;
  65         }
  66
  67         function setUserIP( $ip ) {
  68                 $this->user_text = $ip;
  69         }
  70
  71         function setText( $text ) {
  72                 $this->text = $text;
  73         }
  74
  75         function setComment( $text ) {
  76                 $this->comment = $text;
  77         }
  78
  79         function setMinor( $minor ) {
  80                 $this->minor = (bool)$minor;
  81         }
  82
  83         function setSrc( $src ) {
  84                 $this->src = $src;
  85         }
  86
  87         function setFilename( $filename ) {
  88                 $this->filename = $filename;
  89         }
  90
  91         function setSize( $size ) {
  92                 $this->size = intval( $size );
  93         }
  94
  95         function setType( $type ) {
  96                 $this->type = $type;
  97         }
  98
  99         function setAction( $action ) {
 100                 $this->action = $action;
 101         }
 102
 103         function setParams( $params ) {
 104                 $this->params = $params;
 105         }
 106
 107         function getTitle() {
 108                 return $this->title;
 109         }
 110
 111         function getID() {
 112                 return $this->id;
 113         }
 114
 115         function getTimestamp() {
 116                 return $this->timestamp;
 117         }
 118
 119         function getUser() {
 120                 return $this->user_text;
 121         }
 122
 123         function getText() {
 124                 return $this->text;
 125         }
 126
 127         function getComment() {
 128                 return $this->comment;
 129         }
 130
 131         function getMinor() {
 132                 return $this->minor;
 133         }
 134
 135         function getSrc() {
 136                 return $this->src;
 137         }
 138
 139         function getFilename() {
 140                 return $this->filename;
 141         }
 142
 143         function getSize() {
 144                 return $this->size;
 145         }
 146
 147         function getType() {
 148                 return $this->type;
 149         }
 150
 151         function getAction() {
 152                 return $this->action;
 153         }
 154
 155         function getParams() {
 156                 return $this->params;
 157         }
 158
 159         function importOldRevision() {
 160                 $dbw = wfGetDB( DB_MASTER );
 161
 162                 # Sneak a single revision into place
 163                 $user = User::newFromName( $this->getUser() );
 164                 if( $user ) {
 165                         $userId = intval( $user->getId() );
 166                         $userText = $user->getName();
 167                 } else {
 168                         $userId = 0;
 169                         $userText = $this->getUser();
 170                 }
 171
 172                 // avoid memory leak...?
 173                 $linkCache = LinkCache::singleton();
 174                 $linkCache->clear();
 175
 176                 $article = new Article( $this->title );
 177                 $pageId = $article->getId();
 178                 if( $pageId == 0 ) {
 179                         # must create the page...
 180                         $pageId = $article->insertOn( $dbw );
 181                         $created = true;
 182                 } else {
 183                         $created = false;
 184
 185                         $prior = $dbw->selectField( 'revision', '1',
 186                                 array( 'rev_page' => $pageId,
 187                                         'rev_timestamp' => $dbw->timestamp( $this->timestamp ),
 188                                         'rev_user_text' => $userText,
 189                                         'rev_comment'   => $this->getComment() ),
 190                                 __METHOD__
 191                         );
 192                         if( $prior ) {
 193                                 // FIXME: this could fail slightly for multiple matches :P
 194                                 wfDebug( __METHOD__ . ": skipping existing revision for [[" .
 195                                         $this->title->getPrefixedText() . "]], timestamp " . $this->timestamp . "\n" );
 196                                 return false;
 197                         }
 198                 }
 199
 200                 # FIXME: Use original rev_id optionally (better for backups)
 201                 # Insert the row
 202                 $revision = new Revision( array(
 203                         'page'       => $pageId,
 204                         'text'       => $this->getText(),
 205                         'comment'    => $this->getComment(),
 206                         'user'       => $userId,
 207                         'user_text'  => $userText,
 208                         'timestamp'  => $this->timestamp,
 209                         'minor_edit' => $this->minor,
 210                         ) );
 211                 $revId = $revision->insertOn( $dbw );
 212                 $changed = $article->updateIfNewerOn( $dbw, $revision );
 213
 214                 # To be on the safe side...
 215                 $tempTitle = $GLOBALS['wgTitle'];
 216                 $GLOBALS['wgTitle'] = $this->title;
 217
 218                 if( $created ) {
 219                         wfDebug( __METHOD__ . ": running onArticleCreate\n" );
 220                         Article::onArticleCreate( $this->title );
 221
 222                         wfDebug( __METHOD__ . ": running create updates\n" );
 223                         $article->createUpdates( $revision );
 224
 225                 } elseif( $changed ) {
 226                         wfDebug( __METHOD__ . ": running onArticleEdit\n" );
 227                         Article::onArticleEdit( $this->title );
 228
 229                         wfDebug( __METHOD__ . ": running edit updates\n" );
 230                         $article->editUpdates(
 231                                 $this->getText(),
 232                                 $this->getComment(),
 233                                 $this->minor,
 234                                 $this->timestamp,
 235                                 $revId );
 236                 }
 237                 $GLOBALS['wgTitle'] = $tempTitle;
 238
 239                 return true;
 240         }
 241
 242         function importLogItem() {
 243                 $dbw = wfGetDB( DB_MASTER );
 244                 # FIXME: this will not record autoblocks
 245                 if( !$this->getTitle() ) {
 246                         wfDebug( __METHOD__ . ": skipping invalid {$this->type}/{$this->action} log time, timestamp " .
 247                                 $this->timestamp . "\n" );
 248                         return;
 249                 }
 250                 # Check if it exists already
 251                 // FIXME: use original log ID (better for backups)
 252                 $prior = $dbw->selectField( 'logging', '1',
 253                         array( 'log_type' => $this->getType(),
 254                                 'log_action'    => $this->getAction(),
 255                                 'log_timestamp' => $dbw->timestamp( $this->timestamp ),
 256                                 'log_namespace' => $this->getTitle()->getNamespace(),
 257                                 'log_title'     => $this->getTitle()->getDBkey(),
 258                                 'log_comment'   => $this->getComment(),
 259                                 #'log_user_text' => $this->user_text,
 260                                 'log_params'    => $this->params ),
 261                         __METHOD__
 262                 );
 263                 // FIXME: this could fail slightly for multiple matches :P
 264                 if( $prior ) {
 265                         wfDebug( __METHOD__ . ": skipping existing item for Log:{$this->type}/{$this->action}, timestamp " .
 266                                 $this->timestamp . "\n" );
 267                         return false;
 268                 }
 269                 $log_id = $dbw->nextSequenceValue( 'logging_log_id_seq' );
 270                 $data = array(
 271                         'log_id' => $log_id,
 272                         'log_type' => $this->type,
 273                         'log_action' => $this->action,
 274                         'log_timestamp' => $dbw->timestamp( $this->timestamp ),
 275                         'log_user' => User::idFromName( $this->user_text ),
 276                         #'log_user_text' => $this->user_text,
 277                         'log_namespace' => $this->getTitle()->getNamespace(),
 278                         'log_title' => $this->getTitle()->getDBkey(),
 279                         'log_comment' => $this->getComment(),
 280                         'log_params' => $this->params
 281                 );
 282                 $dbw->insert( 'logging', $data, __METHOD__ );
 283         }
 284
 285         function importUpload() {
 286                 wfDebug( __METHOD__ . ": STUB\n" );
 287
 288                 /**
 289                         // from file revert...
 290                         $source = $this->file->getArchiveVirtualUrl( $this->oldimage );
 291                         $comment = $wgRequest->getText( 'wpComment' );
 292                         // TODO: Preserve file properties from database instead of reloading from file
 293                         $status = $this->file->upload( $source, $comment, $comment );
 294                         if( $status->isGood() ) {
 295                 */
 296
 297                 /**
 298                         // from file upload...
 299                 $this->mLocalFile = wfLocalFile( $nt );
 300                 $this->mDestName = $this->mLocalFile->getName();
 301                 //....
 302                         $status = $this->mLocalFile->upload( $this->mTempPath, $this->mComment, $pageText,
 303                         File::DELETE_SOURCE, $this->mFileProps );
 304                         if ( !$status->isGood() ) {
 305                                 $resultDetails = array( 'internal' => $status->getWikiText() );
 306                 */
 307
 308                 // @todo Fixme: upload() uses $wgUser, which is wrong here
 309                 // it may also create a page without our desire, also wrong potentially.
 310                 // and, it will record a *current* upload, but we might want an archive version here
 311
 312                 $file = wfLocalFile( $this->getTitle() );
 313                 if( !$file ) {
 314                         var_dump( $file );
 315                         wfDebug( "IMPORT: Bad file. :(\n" );
 316                         return false;
 317                 }
 318
 319                 $source = $this->downloadSource();
 320                 if( !$source ) {
 321                         wfDebug( "IMPORT: Could not fetch remote file. :(\n" );
 322                         return false;
 323                 }
 324
 325                 $status = $file->upload( $source,
 326                         $this->getComment(),
 327                         $this->getComment(), // Initial page, if none present...
 328                         File::DELETE_SOURCE,
 329                         false, // props...
 330                         $this->getTimestamp() );
 331
 332                 if( $status->isGood() ) {
 333                         // yay?
 334                         wfDebug( "IMPORT: is ok?\n" );
 335                         return true;
 336                 }
 337
 338                 wfDebug( "IMPORT: is bad? " . $status->getXml() . "\n" );
 339                 return false;
 340
 341         }
 342
 343         function downloadSource() {
 344                 global $wgEnableUploads;
 345                 if( !$wgEnableUploads ) {
 346                         return false;
 347                 }
 348
 349                 $tempo = tempnam( wfTempDir(), 'download' );
 350                 $f = fopen( $tempo, 'wb' );
 351                 if( !$f ) {
 352                         wfDebug( "IMPORT: couldn't write to temp file $tempo\n" );
 353                         return false;
 354                 }
 355
 356                 // @todo Fixme!
 357                 $src = $this->getSrc();
 358                 $data = Http::get( $src );
 359                 if( !$data ) {
 360                         wfDebug( "IMPORT: couldn't fetch source $src\n" );
 361                         fclose( $f );
 362                         unlink( $tempo );
 363                         return false;
 364                 }
 365
 366                 fwrite( $f, $data );
 367                 fclose( $f );
 368
 369                 return $tempo;
 370         }
 371
 372 }
 373
 374 /**
 375  * @todo document (e.g. one-sentence class description).
 376  * @ingroup SpecialPage
 377  */
 378 class ImportStringSource {
 379         function __construct( $string ) {
 380                 $this->mString = $string;
 381                 $this->mRead = false;
 382         }
 383
 384         function atEnd() {
 385                 return $this->mRead;
 386         }
 387
 388         function readChunk() {
 389                 if( $this->atEnd() ) {
 390                         return false;
 391                 } else {
 392                         $this->mRead = true;
 393                         return $this->mString;
 394                 }
 395         }
 396 }
 397
 398 /**
 399  * @todo document (e.g. one-sentence class description).
 400  * @ingroup SpecialPage
 401  */
 402 class ImportStreamSource {
 403         function __construct( $handle ) {
 404                 $this->mHandle = $handle;
 405         }
 406
 407         function atEnd() {
 408                 return feof( $this->mHandle );
 409         }
 410
 411         function readChunk() {
 412                 return fread( $this->mHandle, 32768 );
 413         }
 414
 415         static function newFromFile( $filename ) {
 416                 $file = @fopen( $filename, 'rt' );
 417                 if( !$file ) {
 418                         return new WikiErrorMsg( "importcantopen" );
 419                 }
 420                 return new ImportStreamSource( $file );
 421         }
 422
 423         static function newFromUpload( $fieldname = "xmlimport" ) {
 424                 $upload =& $_FILES[$fieldname];
 425
 426                 if( !isset( $upload ) || !$upload['name'] ) {
 427                         return new WikiErrorMsg( 'importnofile' );
 428                 }
 429                 if( !empty( $upload['error'] ) ) {
 430                         switch($upload['error']){
 431                                 case 1: # The uploaded file exceeds the upload_max_filesize directive in php.ini.
 432                                         return new WikiErrorMsg( 'importuploaderrorsize' );
 433                                 case 2: # The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.
 434                                         return new WikiErrorMsg( 'importuploaderrorsize' );
 435                                 case 3: # The uploaded file was only partially uploaded
 436                                         return new WikiErrorMsg( 'importuploaderrorpartial' );
 437                                 case 6: #Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3.
 438                                         return new WikiErrorMsg( 'importuploaderrortemp' );
 439                                 # case else: # Currently impossible
 440                         }
 441
 442                 }
 443                 $fname = $upload['tmp_name'];
 444                 if( is_uploaded_file( $fname ) ) {
 445                         return ImportStreamSource::newFromFile( $fname );
 446                 } else {
 447                         return new WikiErrorMsg( 'importnofile' );
 448                 }
 449         }
 450
 451         static function newFromURL( $url, $method = 'GET' ) {
 452                 wfDebug( __METHOD__ . ": opening $url\n" );
 453                 # Use the standard HTTP fetch function; it times out
 454                 # quicker and sorts out user-agent problems which might
 455                 # otherwise prevent importing from large sites, such
 456                 # as the Wikimedia cluster, etc.
 457                 $data = Http::request( $method, $url );
 458                 if( $data !== false ) {
 459                         $file = tmpfile();
 460                         fwrite( $file, $data );
 461                         fflush( $file );
 462                         fseek( $file, 0 );
 463                         return new ImportStreamSource( $file );
 464                 } else {
 465                         return new WikiErrorMsg( 'importcantopen' );
 466                 }
 467         }
 468
 469         public static function newFromInterwiki( $interwiki, $page, $history = false, $templates = false, $pageLinkDepth = 0 ) {
 470                 if( $page == '' ) {
 471                         return new WikiErrorMsg( 'import-noarticle' );
 472                 }
 473                 $link = Title::newFromText( "$interwiki:Special:Export/$page" );
 474                 if( is_null( $link ) || $link->getInterwiki() == '' ) {
 475                         return new WikiErrorMsg( 'importbadinterwiki' );
 476                 } else {
 477                         $params = array();
 478                         if ( $history ) $params['history'] = 1;
 479                         if ( $templates ) $params['templates'] = 1;
 480                         if ( $pageLinkDepth ) $params['pagelink-depth'] = $pageLinkDepth;
 481                         $url = $link->getFullUrl( $params );
 482                         # For interwikis, use POST to avoid redirects.
 483                         return ImportStreamSource::newFromURL( $url, "POST" );
 484                 }
 485         }
 486 }