includes/SpecialImport.php

   1 <?php
   2 /**
   3  * MediaWiki page data importer
   4  * Copyright (C) 2003,2005 Brion Vibber <brion@pobox.com>
   5  * http://www.mediawiki.org/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @package MediaWiki
  23  * @subpackage SpecialPage
  24  */
  25
  26 /**
  27  * Constructor
  28  */
  29 function wfSpecialImport( $page = '' ) {
  30         global $wgUser, $wgOut, $wgRequest, $wgTitle, $wgImportSources;
  31         global $wgImportTargetNamespace;
  32
  33         $interwiki = false;
  34         $namespace = $wgImportTargetNamespace;
  35         $frompage = '';
  36         $history = true;
  37
  38         if( $wgRequest->wasPosted() && $wgRequest->getVal( 'action' ) == 'submit') {
  39                 $isUpload = false;
  40                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  41
  42                 switch( $wgRequest->getVal( "source" ) ) {
  43                 case "upload":
  44                         $isUpload = true;
  45                         if( $wgUser->isAllowed( 'importupload' ) ) {
  46                                 $source = ImportStreamSource::newFromUpload( "xmlimport" );
  47                         } else {
  48                                 return $wgOut->permissionRequired( 'importupload' );
  49                         }
  50                         break;
  51                 case "interwiki":
  52                         $interwiki = $wgRequest->getVal( 'interwiki' );
  53                         $history = $wgRequest->getCheck( 'interwikiHistory' );
  54                         $frompage = $wgRequest->getText( "frompage" );
  55                         $source = ImportStreamSource::newFromInterwiki(
  56                                 $interwiki,
  57                                 $frompage,
  58                                 $history );
  59                         break;
  60                 default:
  61                         $source = new WikiErrorMsg( "importunknownsource" );
  62                 }
  63
  64                 if( WikiError::isError( $source ) ) {
  65                         $wgOut->addWikiText( wfEscapeWikiText( $source->getMessage() ) );
  66                 } else {
  67                         $wgOut->addWikiText( wfMsg( "importstart" ) );
  68
  69                         $importer = new WikiImporter( $source );
  70                         if( !is_null( $namespace ) ) {
  71                                 $importer->setTargetNamespace( $namespace );
  72                         }
  73                         $reporter = new ImportReporter( $importer, $isUpload, $interwiki );
  74
  75                         $reporter->open();
  76                         $result = $importer->doImport();
  77                         $reporter->close();
  78
  79                         if( WikiError::isError( $result ) ) {
  80                                 $wgOut->addWikiText( wfMsg( "importfailed",
  81                                         wfEscapeWikiText( $result->getMessage() ) ) );
  82                         } else {
  83                                 # Success!
  84                                 $wgOut->addWikiText( wfMsg( "importsuccess" ) );
  85                         }
  86                 }
  87         }
  88
  89         $action = $wgTitle->escapeLocalUrl( 'action=submit' );
  90
  91         if( $wgUser->isAllowed( 'importupload' ) ) {
  92                 $wgOut->addWikiText( wfMsg( "importtext" ) );
  93                 $wgOut->addHTML( "
  94 <fieldset>
  95         <legend>" . wfMsgHtml('upload') . "</legend>
  96         <form enctype='multipart/form-data' method='post' action=\"$action\">
  97                 <input type='hidden' name='action' value='submit' />
  98                 <input type='hidden' name='source' value='upload' />
  99                 <input type='hidden' name='MAX_FILE_SIZE' value='2000000' />
 100                 <input type='file' name='xmlimport' value='' size='30' />
 101                 <input type='submit' value=\"" . wfMsgHtml( "uploadbtn" ) . "\" />
 102         </form>
 103 </fieldset>
 104 " );
 105         } else {
 106                 if( empty( $wgImportSources ) ) {
 107                         $wgOut->addWikiText( wfMsg( 'importnosources' ) );
 108                 }
 109         }
 110
 111         if( !empty( $wgImportSources ) ) {
 112                 $wgOut->addHTML( "
 113 <fieldset>
 114         <legend>" . wfMsgHtml('importinterwiki') . "</legend>
 115         <form method='post' action=\"$action\">" .
 116                 $wgOut->parse( wfMsg( 'import-interwiki-text' ) ) . "
 117                 <input type='hidden' name='action' value='submit' />
 118                 <input type='hidden' name='source' value='interwiki' />
 119                 <table>
 120                         <tr>
 121                                 <td>
 122                                         <select name='interwiki'>" );
 123                 foreach( $wgImportSources as $prefix ) {
 124                         $iw = htmlspecialchars( $prefix );
 125                         $selected = ($interwiki === $prefix) ? ' selected="selected"' : '';
 126                         $wgOut->addHTML( "<option value=\"$iw\"$selected>$iw</option>\n" );
 127                 }
 128                 $wgOut->addHTML( "
 129                                         </select>
 130                                 </td>
 131                                 <td>" .
 132                                         wfInput( 'frompage', 50, $frompage ) .
 133                                 "</td>
 134                         </tr>
 135                         <tr>
 136                                 <td></td>
 137                                 <td>" .
 138                                         wfCheckLabel( wfMsg( 'import-interwiki-history' ),
 139                                                 'interwikiHistory', 'interwikiHistory', $history ) .
 140                                 "</td>
 141                         </tr>
 142                         <tr>
 143                                 <td></td>
 144                                 <td>
 145                                         " . wfMsgHtml( 'import-interwiki-namespace' ) . " " .
 146                                                 HTMLnamespaceselector( $namespace, '' ) . "
 147                                 </td>
 148                         </tr>
 149                         <tr>
 150                                 <td></td>
 151                                 <td>" .
 152                                         wfSubmitButton( wfMsg( 'import-interwiki-submit' ) ) .
 153                                 "</td>
 154                         </tr>
 155                 </table>
 156         </form>
 157 </fieldset>
 158 " );
 159         }
 160 }
 161
 162 /**
 163  * Reporting callback
 164  */
 165 class ImportReporter {
 166         function __construct( $importer, $upload, $interwiki ) {
 167                 $importer->setPageOutCallback( array( $this, 'reportPage' ) );
 168                 $this->mPageCount = 0;
 169                 $this->mIsUpload = $upload;
 170                 $this->mInterwiki = $interwiki;
 171         }
 172
 173         function open() {
 174                 global $wgOut;
 175                 $wgOut->addHtml( "<ul>\n" );
 176         }
 177
 178         function reportPage( $title, $origTitle, $revisionCount, $successCount ) {
 179                 global $wgOut, $wgUser, $wgLang, $wgContLang;
 180
 181                 $skin = $wgUser->getSkin();
 182
 183                 $this->mPageCount++;
 184
 185                 $localCount = $wgLang->formatNum( $successCount );
 186                 $contentCount = $wgContLang->formatNum( $successCount );
 187
 188                 $wgOut->addHtml( "<li>" . $skin->makeKnownLinkObj( $title ) .
 189                         " " .
 190                         wfMsgExt( 'import-revision-count', array( 'parsemag', 'escape' ), $localCount ) .
 191                         "</li>\n" );
 192
 193                 if( $successCount > 0 ) {
 194                         $log = new LogPage( 'import' );
 195                         if( $this->mIsUpload ) {
 196                                 $detail = wfMsgForContent( 'import-logentry-upload-detail',
 197                                         $contentCount );
 198                                 $log->addEntry( 'upload', $title, $detail );
 199                         } else {
 200                                 $interwiki = '[[:' . $this->mInterwiki . ':' .
 201                                         $origTitle->getPrefixedText() . ']]';
 202                                 $detail = wfMsgForContent( 'import-logentry-interwiki-detail',
 203                                         $contentCount, $interwiki );
 204                                 $log->addEntry( 'interwiki', $title, $detail );
 205                         }
 206
 207                         $comment = $detail; // quick
 208                         $dbw = wfGetDB( DB_MASTER );
 209                         $nullRevision = Revision::newNullRevision(
 210                                 $dbw, $title->getArticleId(), $comment, true );
 211                         $nullRevision->insertOn( $dbw );
 212                 }
 213         }
 214
 215         function close() {
 216                 global $wgOut;
 217                 if( $this->mPageCount == 0 ) {
 218                         $wgOut->addHtml( "<li>" . wfMsgHtml( 'importnopages' ) . "</li>\n" );
 219                 }
 220                 $wgOut->addHtml( "</ul>\n" );
 221         }
 222 }
 223
 224 /**
 225  *
 226  * @package MediaWiki
 227  * @subpackage SpecialPage
 228  */
 229 class WikiRevision {
 230         var $title = null;
 231         var $id = 0;
 232         var $timestamp = "20010115000000";
 233         var $user = 0;
 234         var $user_text = "";
 235         var $text = "";
 236         var $comment = "";
 237         var $minor = false;
 238
 239         function setTitle( $title ) {
 240                 if( is_object( $title ) ) {
 241                         $this->title = $title;
 242                 } elseif( is_null( $title ) ) {
 243                         throw new MWException( "WikiRevision given a null title in import. You may need to adjust \$wgLegalTitleChars." );
 244                 } else {
 245                         throw new MWException( "WikiRevision given non-object title in import." );
 246                 }
 247         }
 248
 249         function setID( $id ) {
 250                 $this->id = $id;
 251         }
 252
 253         function setTimestamp( $ts ) {
 254                 # 2003-08-05T18:30:02Z
 255                 $this->timestamp = wfTimestamp( TS_MW, $ts );
 256         }
 257
 258         function setUsername( $user ) {
 259                 $this->user_text = $user;
 260         }
 261
 262         function setUserIP( $ip ) {
 263                 $this->user_text = $ip;
 264         }
 265
 266         function setText( $text ) {
 267                 $this->text = $text;
 268         }
 269
 270         function setComment( $text ) {
 271                 $this->comment = $text;
 272         }
 273
 274         function setMinor( $minor ) {
 275                 $this->minor = (bool)$minor;
 276         }
 277
 278         function getTitle() {
 279                 return $this->title;
 280         }
 281
 282         function getID() {
 283                 return $this->id;
 284         }
 285
 286         function getTimestamp() {
 287                 return $this->timestamp;
 288         }
 289
 290         function getUser() {
 291                 return $this->user_text;
 292         }
 293
 294         function getText() {
 295                 return $this->text;
 296         }
 297
 298         function getComment() {
 299                 return $this->comment;
 300         }
 301
 302         function getMinor() {
 303                 return $this->minor;
 304         }
 305
 306         function importOldRevision() {
 307                 $dbw =& wfGetDB( DB_MASTER );
 308
 309                 # Sneak a single revision into place
 310                 $user = User::newFromName( $this->getUser() );
 311                 if( $user ) {
 312                         $userId = intval( $user->getId() );
 313                         $userText = $user->getName();
 314                 } else {
 315                         $userId = 0;
 316                         $userText = $this->getUser();
 317                 }
 318
 319                 // avoid memory leak...?
 320                 $linkCache =& LinkCache::singleton();
 321                 $linkCache->clear();
 322
 323                 $article = new Article( $this->title );
 324                 $pageId = $article->getId();
 325                 if( $pageId == 0 ) {
 326                         # must create the page...
 327                         $pageId = $article->insertOn( $dbw );
 328                         $created = true;
 329                 } else {
 330                         $created = false;
 331
 332                         $prior = Revision::loadFromTimestamp( $dbw, $this->title, $this->timestamp );
 333                         if( !is_null( $prior ) ) {
 334                                 // FIXME: this could fail slightly for multiple matches :P
 335                                 wfDebug( __METHOD__ . ": skipping existing revision for [[" .
 336                                         $this->title->getPrefixedText() . "]], timestamp " .
 337                                         $this->timestamp . "\n" );
 338                                 return false;
 339                         }
 340                 }
 341
 342                 # FIXME: Use original rev_id optionally
 343                 # FIXME: blah blah blah
 344
 345                 #if( $numrows > 0 ) {
 346                 #       return wfMsg( "importhistoryconflict" );
 347                 #}
 348
 349                 # Insert the row
 350                 $revision = new Revision( array(
 351                         'page'       => $pageId,
 352                         'text'       => $this->getText(),
 353                         'comment'    => $this->getComment(),
 354                         'user'       => $userId,
 355                         'user_text'  => $userText,
 356                         'timestamp'  => $this->timestamp,
 357                         'minor_edit' => $this->minor,
 358                         ) );
 359                 $revId = $revision->insertOn( $dbw );
 360                 $changed = $article->updateIfNewerOn( $dbw, $revision );
 361
 362                 if( $created ) {
 363                         wfDebug( __METHOD__ . ": running onArticleCreate\n" );
 364                         Article::onArticleCreate( $this->title );
 365
 366                         wfDebug( __METHOD__ . ": running create updates\n" );
 367                         $article->createUpdates( $revision );
 368
 369                 } elseif( $changed ) {
 370                         wfDebug( __METHOD__ . ": running onArticleEdit\n" );
 371                         Article::onArticleEdit( $this->title );
 372
 373                         wfDebug( __METHOD__ . ": running edit updates\n" );
 374                         $article->editUpdates(
 375                                 $this->getText(),
 376                                 $this->getComment(),
 377                                 $this->minor,
 378                                 $this->timestamp,
 379                                 $revId );
 380                 }
 381
 382                 return true;
 383         }
 384
 385 }
 386
 387 /**
 388  *
 389  * @package MediaWiki
 390  * @subpackage SpecialPage
 391  */
 392 class WikiImporter {
 393         var $mSource = null;
 394         var $mPageCallback = null;
 395         var $mPageOutCallback = null;
 396         var $mRevisionCallback = null;
 397         var $mTargetNamespace = null;
 398         var $lastfield;
 399
 400         function WikiImporter( $source ) {
 401                 $this->setRevisionCallback( array( &$this, "importRevision" ) );
 402                 $this->mSource = $source;
 403         }
 404
 405         function throwXmlError( $err ) {
 406                 $this->debug( "FAILURE: $err" );
 407                 wfDebug( "WikiImporter XML error: $err\n" );
 408         }
 409
 410         # --------------
 411
 412         function doImport() {
 413                 if( empty( $this->mSource ) ) {
 414                         return new WikiErrorMsg( "importnotext" );
 415                 }
 416
 417                 $parser = xml_parser_create( "UTF-8" );
 418
 419                 # case folding violates XML standard, turn it off
 420                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 421
 422                 xml_set_object( $parser, $this );
 423                 xml_set_element_handler( $parser, "in_start", "" );
 424
 425                 $offset = 0; // for context extraction on error reporting
 426                 do {
 427                         $chunk = $this->mSource->readChunk();
 428                         if( !xml_parse( $parser, $chunk, $this->mSource->atEnd() ) ) {
 429                                 wfDebug( "WikiImporter::doImport encountered XML parsing error\n" );
 430                                 return new WikiXmlError( $parser, 'XML import parse failure', $chunk, $offset );
 431                         }
 432                         $offset += strlen( $chunk );
 433                 } while( $chunk !== false && !$this->mSource->atEnd() );
 434                 xml_parser_free( $parser );
 435
 436                 return true;
 437         }
 438
 439         function debug( $data ) {
 440                 #wfDebug( "IMPORT: $data\n" );
 441         }
 442
 443         function notice( $data ) {
 444                 global $wgCommandLineMode;
 445                 if( $wgCommandLineMode ) {
 446                         print "$data\n";
 447                 } else {
 448                         global $wgOut;
 449                         $wgOut->addHTML( "<li>$data</li>\n" );
 450                 }
 451         }
 452
 453         /**
 454          * Sets the action to perform as each new page in the stream is reached.
 455          * @param callable $callback
 456          * @return callable
 457          */
 458         function setPageCallback( $callback ) {
 459                 $previous = $this->mPageCallback;
 460                 $this->mPageCallback = $callback;
 461                 return $previous;
 462         }
 463
 464         /**
 465          * Sets the action to perform as each page in the stream is completed.
 466          * Callback accepts the page title (as a Title object), a second object
 467          * with the original title form (in case it's been overridden into a
 468          * local namespace), and a count of revisions.
 469          *
 470          * @param callable $callback
 471          * @return callable
 472          */
 473         function setPageOutCallback( $callback ) {
 474                 $previous = $this->mPageOutCallback;
 475                 $this->mPageOutCallback = $callback;
 476                 return $previous;
 477         }
 478
 479         /**
 480          * Sets the action to perform as each page revision is reached.
 481          * @param callable $callback
 482          * @return callable
 483          */
 484         function setRevisionCallback( $callback ) {
 485                 $previous = $this->mRevisionCallback;
 486                 $this->mRevisionCallback = $callback;
 487                 return $previous;
 488         }
 489
 490         /**
 491          * Set a target namespace to override the defaults
 492          */
 493         function setTargetNamespace( $namespace ) {
 494                 if( is_null( $namespace ) ) {
 495                         // Don't override namespaces
 496                         $this->mTargetNamespace = null;
 497                 } elseif( $namespace >= 0 ) {
 498                         // FIXME: Check for validity
 499                         $this->mTargetNamespace = intval( $namespace );
 500                 } else {
 501                         return false;
 502                 }
 503         }
 504
 505         /**
 506          * Default per-revision callback, performs the import.
 507          * @param WikiRevision $revision
 508          * @private
 509          */
 510         function importRevision( &$revision ) {
 511                 $dbw =& wfGetDB( DB_MASTER );
 512                 return $dbw->deadlockLoop( array( &$revision, 'importOldRevision' ) );
 513         }
 514
 515         /**
 516          * Alternate per-revision callback, for debugging.
 517          * @param WikiRevision $revision
 518          * @private
 519          */
 520         function debugRevisionHandler( &$revision ) {
 521                 $this->debug( "Got revision:" );
 522                 if( is_object( $revision->title ) ) {
 523                         $this->debug( "-- Title: " . $revision->title->getPrefixedText() );
 524                 } else {
 525                         $this->debug( "-- Title: <invalid>" );
 526                 }
 527                 $this->debug( "-- User: " . $revision->user_text );
 528                 $this->debug( "-- Timestamp: " . $revision->timestamp );
 529                 $this->debug( "-- Comment: " . $revision->comment );
 530                 $this->debug( "-- Text: " . $revision->text );
 531         }
 532
 533         /**
 534          * Notify the callback function when a new <page> is reached.
 535          * @param Title $title
 536          * @private
 537          */
 538         function pageCallback( $title ) {
 539                 if( is_callable( $this->mPageCallback ) ) {
 540                         call_user_func( $this->mPageCallback, $title );
 541                 }
 542         }
 543
 544         /**
 545          * Notify the callback function when a </page> is closed.
 546          * @param Title $title
 547          * @param Title $origTitle
 548          * @param int $revisionCount
 549          * @param int $successCount number of revisions for which callback returned true
 550          * @private
 551          */
 552         function pageOutCallback( $title, $origTitle, $revisionCount, $successCount ) {
 553                 if( is_callable( $this->mPageOutCallback ) ) {
 554                         call_user_func( $this->mPageOutCallback, $title, $origTitle,
 555                                 $revisionCount, $successCount );
 556                 }
 557         }
 558
 559
 560         # XML parser callbacks from here out -- beware!
 561         function donothing( $parser, $x, $y="" ) {
 562                 #$this->debug( "donothing" );
 563         }
 564
 565         function in_start( $parser, $name, $attribs ) {
 566                 $this->debug( "in_start $name" );
 567                 if( $name != "mediawiki" ) {
 568                         return $this->throwXMLerror( "Expected <mediawiki>, got <$name>" );
 569                 }
 570                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 571         }
 572
 573         function in_mediawiki( $parser, $name, $attribs ) {
 574                 $this->debug( "in_mediawiki $name" );
 575                 if( $name == 'siteinfo' ) {
 576                         xml_set_element_handler( $parser, "in_siteinfo", "out_siteinfo" );
 577                 } elseif( $name == 'page' ) {
 578                         $this->workRevisionCount = 0;
 579                         $this->workSuccessCount = 0;
 580                         xml_set_element_handler( $parser, "in_page", "out_page" );
 581                 } else {
 582                         return $this->throwXMLerror( "Expected <page>, got <$name>" );
 583                 }
 584         }
 585         function out_mediawiki( $parser, $name ) {
 586                 $this->debug( "out_mediawiki $name" );
 587                 if( $name != "mediawiki" ) {
 588                         return $this->throwXMLerror( "Expected </mediawiki>, got </$name>" );
 589                 }
 590                 xml_set_element_handler( $parser, "donothing", "donothing" );
 591         }
 592
 593
 594         function in_siteinfo( $parser, $name, $attribs ) {
 595                 // no-ops for now
 596                 $this->debug( "in_siteinfo $name" );
 597                 switch( $name ) {
 598                 case "sitename":
 599                 case "base":
 600                 case "generator":
 601                 case "case":
 602                 case "namespaces":
 603                 case "namespace":
 604                         break;
 605                 default:
 606                         return $this->throwXMLerror( "Element <$name> not allowed in <siteinfo>." );
 607                 }
 608         }
 609
 610         function out_siteinfo( $parser, $name ) {
 611                 if( $name == "siteinfo" ) {
 612                         xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 613                 }
 614         }
 615
 616
 617         function in_page( $parser, $name, $attribs ) {
 618                 $this->debug( "in_page $name" );
 619                 switch( $name ) {
 620                 case "id":
 621                 case "title":
 622                 case "restrictions":
 623                         $this->appendfield = $name;
 624                         $this->appenddata = "";
 625                         $this->parenttag = "page";
 626                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 627                         xml_set_character_data_handler( $parser, "char_append" );
 628                         break;
 629                 case "revision":
 630                         $this->workRevision = new WikiRevision;
 631                         $this->workRevision->setTitle( $this->pageTitle );
 632                         $this->workRevisionCount++;
 633                         xml_set_element_handler( $parser, "in_revision", "out_revision" );
 634                         break;
 635                 default:
 636                         return $this->throwXMLerror( "Element <$name> not allowed in a <page>." );
 637                 }
 638         }
 639
 640         function out_page( $parser, $name ) {
 641                 $this->debug( "out_page $name" );
 642                 if( $name != "page" ) {
 643                         return $this->throwXMLerror( "Expected </page>, got </$name>" );
 644                 }
 645                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 646
 647                 $this->pageOutCallback( $this->pageTitle, $this->origTitle,
 648                         $this->workRevisionCount, $this->workSuccessCount );
 649
 650                 $this->workTitle = null;
 651                 $this->workRevision = null;
 652                 $this->workRevisionCount = 0;
 653                 $this->workSuccessCount = 0;
 654                 $this->pageTitle = null;
 655                 $this->origTitle = null;
 656         }
 657
 658         function in_nothing( $parser, $name, $attribs ) {
 659                 $this->debug( "in_nothing $name" );
 660                 return $this->throwXMLerror( "No child elements allowed here; got <$name>" );
 661         }
 662         function char_append( $parser, $data ) {
 663                 $this->debug( "char_append '$data'" );
 664                 $this->appenddata .= $data;
 665         }
 666         function out_append( $parser, $name ) {
 667                 $this->debug( "out_append $name" );
 668                 if( $name != $this->appendfield ) {
 669                         return $this->throwXMLerror( "Expected </{$this->appendfield}>, got </$name>" );
 670                 }
 671                 xml_set_element_handler( $parser, "in_$this->parenttag", "out_$this->parenttag" );
 672                 xml_set_character_data_handler( $parser, "donothing" );
 673
 674                 switch( $this->appendfield ) {
 675                 case "title":
 676                         $this->workTitle = $this->appenddata;
 677                         $this->origTitle = Title::newFromText( $this->workTitle );
 678                         if( !is_null( $this->mTargetNamespace ) && !is_null( $this->origTitle ) ) {
 679                                 $this->pageTitle = Title::makeTitle( $this->mTargetNamespace,
 680                                         $this->origTitle->getDbKey() );
 681                         } else {
 682                                 $this->pageTitle = Title::newFromText( $this->workTitle );
 683                         }
 684                         $this->pageCallback( $this->workTitle );
 685                         break;
 686                 case "id":
 687                         if ( $this->parenttag == 'revision' ) {
 688                                 $this->workRevision->setID( $this->appenddata );
 689                         }
 690                         break;
 691                 case "text":
 692                         $this->workRevision->setText( $this->appenddata );
 693                         break;
 694                 case "username":
 695                         $this->workRevision->setUsername( $this->appenddata );
 696                         break;
 697                 case "ip":
 698                         $this->workRevision->setUserIP( $this->appenddata );
 699                         break;
 700                 case "timestamp":
 701                         $this->workRevision->setTimestamp( $this->appenddata );
 702                         break;
 703                 case "comment":
 704                         $this->workRevision->setComment( $this->appenddata );
 705                         break;
 706                 case "minor":
 707                         $this->workRevision->setMinor( true );
 708                         break;
 709                 default:
 710                         $this->debug( "Bad append: {$this->appendfield}" );
 711                 }
 712                 $this->appendfield = "";
 713                 $this->appenddata = "";
 714         }
 715
 716         function in_revision( $parser, $name, $attribs ) {
 717                 $this->debug( "in_revision $name" );
 718                 switch( $name ) {
 719                 case "id":
 720                 case "timestamp":
 721                 case "comment":
 722                 case "minor":
 723                 case "text":
 724                         $this->parenttag = "revision";
 725                         $this->appendfield = $name;
 726                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 727                         xml_set_character_data_handler( $parser, "char_append" );
 728                         break;
 729                 case "contributor":
 730                         xml_set_element_handler( $parser, "in_contributor", "out_contributor" );
 731                         break;
 732                 default:
 733                         return $this->throwXMLerror( "Element <$name> not allowed in a <revision>." );
 734                 }
 735         }
 736
 737         function out_revision( $parser, $name ) {
 738                 $this->debug( "out_revision $name" );
 739                 if( $name != "revision" ) {
 740                         return $this->throwXMLerror( "Expected </revision>, got </$name>" );
 741                 }
 742                 xml_set_element_handler( $parser, "in_page", "out_page" );
 743
 744                 $ok = call_user_func_array( $this->mRevisionCallback,
 745                         array( &$this->workRevision, &$this ) );
 746                 if( $ok ) {
 747                         $this->workSuccessCount++;
 748                 }
 749         }
 750
 751         function in_contributor( $parser, $name, $attribs ) {
 752                 $this->debug( "in_contributor $name" );
 753                 switch( $name ) {
 754                 case "username":
 755                 case "ip":
 756                 case "id":
 757                         $this->parenttag = "contributor";
 758                         $this->appendfield = $name;
 759                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 760                         xml_set_character_data_handler( $parser, "char_append" );
 761                         break;
 762                 default:
 763                         $this->throwXMLerror( "Invalid tag <$name> in <contributor>" );
 764                 }
 765         }
 766
 767         function out_contributor( $parser, $name ) {
 768                 $this->debug( "out_contributor $name" );
 769                 if( $name != "contributor" ) {
 770                         return $this->throwXMLerror( "Expected </contributor>, got </$name>" );
 771                 }
 772                 xml_set_element_handler( $parser, "in_revision", "out_revision" );
 773         }
 774
 775 }
 776
 777 /** @package MediaWiki */
 778 class ImportStringSource {
 779         function ImportStringSource( $string ) {
 780                 $this->mString = $string;
 781                 $this->mRead = false;
 782         }
 783
 784         function atEnd() {
 785                 return $this->mRead;
 786         }
 787
 788         function readChunk() {
 789                 if( $this->atEnd() ) {
 790                         return false;
 791                 } else {
 792                         $this->mRead = true;
 793                         return $this->mString;
 794                 }
 795         }
 796 }
 797
 798 /** @package MediaWiki */
 799 class ImportStreamSource {
 800         function ImportStreamSource( $handle ) {
 801                 $this->mHandle = $handle;
 802         }
 803
 804         function atEnd() {
 805                 return feof( $this->mHandle );
 806         }
 807
 808         function readChunk() {
 809                 return fread( $this->mHandle, 32768 );
 810         }
 811
 812         function newFromFile( $filename ) {
 813                 $file = @fopen( $filename, 'rt' );
 814                 if( !$file ) {
 815                         return new WikiErrorMsg( "importcantopen" );
 816                 }
 817                 return new ImportStreamSource( $file );
 818         }
 819
 820         static function newFromUpload( $fieldname = "xmlimport" ) {
 821                 $upload =& $_FILES[$fieldname];
 822
 823                 if( !isset( $upload ) || !$upload['name'] ) {
 824                         return new WikiErrorMsg( 'importnofile' );
 825                 }
 826                 if( !empty( $upload['error'] ) ) {
 827                         return new WikiErrorMsg( 'importuploaderror', $upload['error'] );
 828                 }
 829                 $fname = $upload['tmp_name'];
 830                 if( is_uploaded_file( $fname ) ) {
 831                         return ImportStreamSource::newFromFile( $fname );
 832                 } else {
 833                         return new WikiErrorMsg( 'importnofile' );
 834                 }
 835         }
 836
 837         function newFromURL( $url ) {
 838                 wfDebug( __METHOD__ . ": opening $url\n" );
 839                 # fopen-wrappers are normally turned off for security.
 840                 ini_set( "allow_url_fopen", true );
 841                 $ret = ImportStreamSource::newFromFile( $url );
 842                 ini_set( "allow_url_fopen", false );
 843                 return $ret;
 844         }
 845
 846         public static function newFromInterwiki( $interwiki, $page, $history=false ) {
 847                 $link = Title::newFromText( "$interwiki:Special:Export/$page" );
 848                 if( is_null( $link ) || $link->getInterwiki() == '' ) {
 849                         return new WikiErrorMsg( 'importbadinterwiki' );
 850                 } else {
 851                         $params = $history ? 'history=1' : '';
 852                         $url = $link->getFullUrl( $params );
 853                         return ImportStreamSource::newFromURL( $url );
 854                 }
 855         }
 856 }
 857
 858
 859 ?>