includes/api/ApiEditPage.php

   1 <?php
   2 /**
   3  * API for MediaWiki 1.8+
   4  *
   5  * Created on August 16, 2007
   6  *
   7  * Copyright © 2007 Iker Labarga <Firstname><Lastname>@gmail.com
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( "ApiBase.php" );
  30 }
  31
  32 /**
  33  * A module that allows for editing and creating pages.
  34  *
  35  * Currently, this wraps around the EditPage class in an ugly way,
  36  * EditPage.php should be rewritten to provide a cleaner interface
  37  * @ingroup API
  38  */
  39 class ApiEditPage extends ApiBase {
  40
  41         public function __construct( $query, $moduleName ) {
  42                 parent::__construct( $query, $moduleName );
  43         }
  44
  45         public function execute() {
  46                 global $wgUser;
  47                 $params = $this->extractRequestParams();
  48
  49                 if ( is_null( $params['text'] ) && is_null( $params['appendtext'] ) &&
  50                                 is_null( $params['prependtext'] ) &&
  51                                 $params['undo'] == 0 )
  52                 {
  53                         $this->dieUsageMsg( array( 'missingtext' ) );
  54                 }
  55
  56                 $titleObj = Title::newFromText( $params['title'] );
  57                 if ( !$titleObj || $titleObj->isExternal() ) {
  58                         $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
  59                 }
  60
  61                 if( $params['redirect'] ) {
  62                         if( $titleObj->isRedirect() ) {
  63                                 $oldTitle = $titleObj;
  64
  65                                 $titles = Title::newFromRedirectArray( Revision::newFromTitle( $oldTitle )->getText( Revision::FOR_THIS_USER ) );
  66
  67                                 $redirValues = array();
  68                                 foreach ( $titles as $id => $newTitle ) {
  69
  70                                         if( !isset( $titles[ $id - 1 ] ) ) {
  71                                                 $titles[ $id - 1 ] = $oldTitle;
  72                                         }
  73
  74                                         $redirValues[] = array(
  75                                                 'from' => $titles[ $id - 1 ]->getPrefixedText(),
  76                                                 'to' => $newTitle->getPrefixedText()
  77                                         );
  78
  79                                         $titleObj = $newTitle;
  80                                 }
  81
  82                                 $this->getResult()->setIndexedTagName( $redirValues, 'r' );
  83                                 $this->getResult()->addValue( null, 'redirects', $redirValues );
  84
  85                         }
  86                 }
  87
  88                 // Some functions depend on $wgTitle == $ep->mTitle
  89                 global $wgTitle;
  90                 $wgTitle = $titleObj;
  91
  92                 if ( $params['createonly'] && $titleObj->exists() ) {
  93                         $this->dieUsageMsg( array( 'createonly-exists' ) );
  94                 }
  95                 if ( $params['nocreate'] && !$titleObj->exists() ) {
  96                         $this->dieUsageMsg( array( 'nocreate-missing' ) );
  97                 }
  98
  99                 // Now let's check whether we're even allowed to do this
 100                 $errors = $titleObj->getUserPermissionsErrors( 'edit', $wgUser );
 101                 if ( !$titleObj->exists() ) {
 102                         $errors = array_merge( $errors, $titleObj->getUserPermissionsErrors( 'create', $wgUser ) );
 103                 }
 104                 if ( count( $errors ) ) {
 105                         $this->dieUsageMsg( $errors[0] );
 106                 }
 107
 108                 $articleObj = new Article( $titleObj );
 109                 $toMD5 = $params['text'];
 110                 if ( !is_null( $params['appendtext'] ) || !is_null( $params['prependtext'] ) )
 111                 {
 112                         // For non-existent pages, Article::getContent()
 113                         // returns an interface message rather than ''
 114                         // We do want getContent()'s behavior for non-existent
 115                         // MediaWiki: pages, though
 116                         if ( $articleObj->getID() == 0 && $titleObj->getNamespace() != NS_MEDIAWIKI ) {
 117                                 $content = '';
 118                         } else {
 119                                 $content = $articleObj->getContent();
 120                         }
 121
 122                         if ( !is_null( $params['section'] ) ) {
 123                                 // Process the content for section edits
 124                                 global $wgParser;
 125                                 $section = intval( $params['section'] );
 126                                 $content = $wgParser->getSection( $content, $section, false );
 127                                 if ( $content === false ) {
 128                                         $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
 129                                 }
 130                         }
 131                         $params['text'] = $params['prependtext'] . $content . $params['appendtext'];
 132                         $toMD5 = $params['prependtext'] . $params['appendtext'];
 133                 }
 134
 135                 if ( $params['undo'] > 0 ) {
 136                         if ( $params['undoafter'] > 0 ) {
 137                                 if ( $params['undo'] < $params['undoafter'] ) {
 138                                         list( $params['undo'], $params['undoafter'] ) =
 139                                         array( $params['undoafter'], $params['undo'] );
 140                                 }
 141                                 $undoafterRev = Revision::newFromID( $params['undoafter'] );
 142                         }
 143                         $undoRev = Revision::newFromID( $params['undo'] );
 144                         if ( is_null( $undoRev ) || $undoRev->isDeleted( Revision::DELETED_TEXT ) ) {
 145                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undo'] ) );
 146                         }
 147
 148                         if ( $params['undoafter'] == 0 ) {
 149                                 $undoafterRev = $undoRev->getPrevious();
 150                         }
 151                         if ( is_null( $undoafterRev ) || $undoafterRev->isDeleted( Revision::DELETED_TEXT ) ) {
 152                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undoafter'] ) );
 153                         }
 154
 155                         if ( $undoRev->getPage() != $articleObj->getID() ) {
 156                                 $this->dieUsageMsg( array( 'revwrongpage', $undoRev->getID(), $titleObj->getPrefixedText() ) );
 157                         }
 158                         if ( $undoafterRev->getPage() != $articleObj->getID() ) {
 159                                 $this->dieUsageMsg( array( 'revwrongpage', $undoafterRev->getID(), $titleObj->getPrefixedText() ) );
 160                         }
 161
 162                         $newtext = $articleObj->getUndoText( $undoRev, $undoafterRev );
 163                         if ( $newtext === false ) {
 164                                 $this->dieUsageMsg( array( 'undo-failure' ) );
 165                         }
 166                         $params['text'] = $newtext;
 167                         // If no summary was given and we only undid one rev,
 168                         // use an autosummary
 169                         if ( is_null( $params['summary'] ) && $titleObj->getNextRevisionID( $undoafterRev->getID() ) == $params['undo'] ) {
 170                                 $params['summary'] = wfMsgForContent( 'undo-summary', $params['undo'], $undoRev->getUserText() );
 171                         }
 172                 }
 173
 174                 // See if the MD5 hash checks out
 175                 if ( !is_null( $params['md5'] ) && md5( $toMD5 ) !== $params['md5'] ) {
 176                         $this->dieUsageMsg( array( 'hashcheckfailed' ) );
 177                 }
 178
 179                 $ep = new EditPage( $articleObj );
 180                 // EditPage wants to parse its stuff from a WebRequest
 181                 // That interface kind of sucks, but it's workable
 182                 $reqArr = array(
 183                         'wpTextbox1' => $params['text'],
 184                         'wpEditToken' => $params['token'],
 185                         'wpIgnoreBlankSummary' => ''
 186                 );
 187
 188                 if ( !is_null( $params['summary'] ) ) {
 189                         $reqArr['wpSummary'] = $params['summary'];
 190                 }
 191
 192                 // Watch out for basetimestamp == ''
 193                 // wfTimestamp() treats it as NOW, almost certainly causing an edit conflict
 194                 if ( !is_null( $params['basetimestamp'] ) && $params['basetimestamp'] != '' ) {
 195                         $reqArr['wpEdittime'] = wfTimestamp( TS_MW, $params['basetimestamp'] );
 196                 } else {
 197                         $reqArr['wpEdittime'] = $articleObj->getTimestamp();
 198                 }
 199
 200                 if ( !is_null( $params['starttimestamp'] ) && $params['starttimestamp'] != '' ) {
 201                         $reqArr['wpStarttime'] = wfTimestamp( TS_MW, $params['starttimestamp'] );
 202                 } else {
 203                         $reqArr['wpStarttime'] = wfTimestampNow();      // Fake wpStartime
 204                 }
 205
 206                 if ( $params['minor'] || ( !$params['notminor'] && $wgUser->getOption( 'minordefault' ) ) )     {
 207                         $reqArr['wpMinoredit'] = '';
 208                 }
 209
 210                 if ( $params['recreate'] ) {
 211                         $reqArr['wpRecreate'] = '';
 212                 }
 213
 214                 if ( !is_null( $params['section'] ) ) {
 215                         $section = intval( $params['section'] );
 216                         if ( $section == 0 && $params['section'] != '0' && $params['section'] != 'new' ) {
 217                                 $this->dieUsage( "The section parameter must be set to an integer or 'new'", "invalidsection" );
 218                         }
 219                         $reqArr['wpSection'] = $params['section'];
 220                 } else {
 221                         $reqArr['wpSection'] = '';
 222                 }
 223
 224                 $watch = $this->getWatchlistValue( $params['watchlist'], $titleObj );
 225
 226                 // Deprecated parameters
 227                 if ( $params['watch'] ) {
 228                         $watch = true;
 229                 } elseif ( $params['unwatch'] ) {
 230                         $watch = false;
 231                 }
 232
 233                 if ( $watch ) {
 234                         $reqArr['wpWatchthis'] = '';
 235                 }
 236
 237                 $req = new FauxRequest( $reqArr, true );
 238                 $ep->importFormData( $req );
 239
 240                 // Run hooks
 241                 // Handle CAPTCHA parameters
 242                 global $wgRequest;
 243                 if ( !is_null( $params['captchaid'] ) ) {
 244                         $wgRequest->setVal( 'wpCaptchaId', $params['captchaid'] );
 245                 }
 246                 if ( !is_null( $params['captchaword'] ) ) {
 247                         $wgRequest->setVal( 'wpCaptchaWord', $params['captchaword'] );
 248                 }
 249
 250                 $r = array();
 251                 if ( !wfRunHooks( 'APIEditBeforeSave', array( $ep, $ep->textbox1, &$r ) ) ) {
 252                         if ( count( $r ) ) {
 253                                 $r['result'] = 'Failure';
 254                                 $this->getResult()->addValue( null, $this->getModuleName(), $r );
 255                                 return;
 256                         } else {
 257                                 $this->dieUsageMsg( array( 'hookaborted' ) );
 258                         }
 259                 }
 260
 261                 // Do the actual save
 262                 $oldRevId = $articleObj->getRevIdFetched();
 263                 $result = null;
 264                 // Fake $wgRequest for some hooks inside EditPage
 265                 // FIXME: This interface SUCKS
 266                 $oldRequest = $wgRequest;
 267                 $wgRequest = $req;
 268
 269                 $retval = $ep->internalAttemptSave( $result, $wgUser->isAllowed( 'bot' ) && $params['bot'] );
 270                 $wgRequest = $oldRequest;
 271                 global $wgMaxArticleSize;
 272
 273                 switch( $retval ) {
 274                         case EditPage::AS_HOOK_ERROR:
 275                         case EditPage::AS_HOOK_ERROR_EXPECTED:
 276                                 $this->dieUsageMsg( array( 'hookaborted' ) );
 277
 278                         case EditPage::AS_IMAGE_REDIRECT_ANON:
 279                                 $this->dieUsageMsg( array( 'noimageredirect-anon' ) );
 280
 281                         case EditPage::AS_IMAGE_REDIRECT_LOGGED:
 282                                 $this->dieUsageMsg( array( 'noimageredirect-logged' ) );
 283
 284                         case EditPage::AS_SPAM_ERROR:
 285                                 $this->dieUsageMsg( array( 'spamdetected', $result['spam'] ) );
 286
 287                         case EditPage::AS_FILTERING:
 288                                 $this->dieUsageMsg( array( 'filtered' ) );
 289
 290                         case EditPage::AS_BLOCKED_PAGE_FOR_USER:
 291                                 $this->dieUsageMsg( array( 'blockedtext' ) );
 292
 293                         case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 294                         case EditPage::AS_CONTENT_TOO_BIG:
 295                                 $this->dieUsageMsg( array( 'contenttoobig', $wgMaxArticleSize ) );
 296
 297                         case EditPage::AS_READ_ONLY_PAGE_ANON:
 298                                 $this->dieUsageMsg( array( 'noedit-anon' ) );
 299
 300                         case EditPage::AS_READ_ONLY_PAGE_LOGGED:
 301                                 $this->dieUsageMsg( array( 'noedit' ) );
 302
 303                         case EditPage::AS_READ_ONLY_PAGE:
 304                                 $this->dieReadOnly();
 305
 306                         case EditPage::AS_RATE_LIMITED:
 307                                 $this->dieUsageMsg( array( 'actionthrottledtext' ) );
 308
 309                         case EditPage::AS_ARTICLE_WAS_DELETED:
 310                                 $this->dieUsageMsg( array( 'wasdeleted' ) );
 311
 312                         case EditPage::AS_NO_CREATE_PERMISSION:
 313                                 $this->dieUsageMsg( array( 'nocreate-loggedin' ) );
 314
 315                         case EditPage::AS_BLANK_ARTICLE:
 316                                 $this->dieUsageMsg( array( 'blankpage' ) );
 317
 318                         case EditPage::AS_CONFLICT_DETECTED:
 319                                 $this->dieUsageMsg( array( 'editconflict' ) );
 320
 321                         // case EditPage::AS_SUMMARY_NEEDED: Can't happen since we set wpIgnoreBlankSummary
 322                         case EditPage::AS_TEXTBOX_EMPTY:
 323                                 $this->dieUsageMsg( array( 'emptynewsection' ) );
 324
 325                         case EditPage::AS_SUCCESS_NEW_ARTICLE:
 326                                 $r['new'] = '';
 327
 328                         case EditPage::AS_SUCCESS_UPDATE:
 329                                 $r['result'] = 'Success';
 330                                 $r['pageid'] = intval( $titleObj->getArticleID() );
 331                                 $r['title'] = $titleObj->getPrefixedText();
 332                                 // HACK: We create a new Article object here because getRevIdFetched()
 333                                 // refuses to be run twice, and because Title::getLatestRevId()
 334                                 // won't fetch from the master unless we select for update, which we
 335                                 // don't want to do.
 336                                 $newArticle = new Article( $titleObj );
 337                                 $newRevId = $newArticle->getRevIdFetched();
 338                                 if ( $newRevId == $oldRevId ) {
 339                                         $r['nochange'] = '';
 340                                 } else {
 341                                         $r['oldrevid'] = intval( $oldRevId );
 342                                         $r['newrevid'] = intval( $newRevId );
 343                                         $r['newtimestamp'] = wfTimestamp( TS_ISO_8601,
 344                                                 $newArticle->getTimestamp() );
 345                                 }
 346                                 break;
 347
 348                         case EditPage::AS_SUMMARY_NEEDED:
 349                                 $this->dieUsageMsg( array( 'summaryrequired' ) );
 350
 351                         case EditPage::AS_END:
 352                                 // This usually means some kind of race condition
 353                                 // or DB weirdness occurred. Fall through to throw an unknown
 354                                 // error.
 355
 356                                 // This needs fixing higher up, as Article::doEdit should be
 357                                 // used rather than Article::updateArticle, so that specific
 358                                 // error conditions can be returned
 359                         default:
 360                                 $this->dieUsageMsg( array( 'unknownerror', $retval ) );
 361                 }
 362                 $this->getResult()->addValue( null, $this->getModuleName(), $r );
 363         }
 364
 365         public function mustBePosted() {
 366                 return true;
 367         }
 368
 369         public function isWriteMode() {
 370                 return true;
 371         }
 372
 373         protected function getDescription() {
 374                 return 'Create and edit pages.';
 375         }
 376
 377         public function getPossibleErrors() {
 378                 global $wgMaxArticleSize;
 379
 380                 return array_merge( parent::getPossibleErrors(), array(
 381                         array( 'missingtext' ),
 382                         array( 'invalidtitle', 'title' ),
 383                         array( 'createonly-exists' ),
 384                         array( 'nocreate-missing' ),
 385                         array( 'nosuchrevid', 'undo' ),
 386                         array( 'nosuchrevid', 'undoafter' ),
 387                         array( 'revwrongpage', 'id', 'text' ),
 388                         array( 'undo-failure' ),
 389                         array( 'hashcheckfailed' ),
 390                         array( 'hookaborted' ),
 391                         array( 'noimageredirect-anon' ),
 392                         array( 'noimageredirect-logged' ),
 393                         array( 'spamdetected', 'spam' ),
 394                         array( 'summaryrequired' ),
 395                         array( 'filtered' ),
 396                         array( 'blockedtext' ),
 397                         array( 'contenttoobig', $wgMaxArticleSize ),
 398                         array( 'noedit-anon' ),
 399                         array( 'noedit' ),
 400                         array( 'actionthrottledtext' ),
 401                         array( 'wasdeleted' ),
 402                         array( 'nocreate-loggedin' ),
 403                         array( 'blankpage' ),
 404                         array( 'editconflict' ),
 405                         array( 'emptynewsection' ),
 406                         array( 'unknownerror', 'retval' ),
 407                         array( 'code' => 'nosuchsection', 'info' => 'There is no section section.' ),
 408                         array( 'code' => 'invalidsection', 'info' => 'The section parameter must be set to an integer or \'new\'' ),
 409                 ) );
 410         }
 411
 412         protected function getAllowedParams() {
 413                 return array(
 414                         'title' => array(
 415                                 ApiBase::PARAM_TYPE => 'string',
 416                                 ApiBase::PARAM_REQUIRED => true
 417                         ),
 418                         'section' => null,
 419                         'text' => null,
 420                         'token' => null,
 421                         'summary' => null,
 422                         'minor' => false,
 423                         'notminor' => false,
 424                         'bot' => false,
 425                         'basetimestamp' => null,
 426                         'starttimestamp' => null,
 427                         'recreate' => false,
 428                         'createonly' => false,
 429                         'nocreate' => false,
 430                         'captchaword' => null,
 431                         'captchaid' => null,
 432                         'watch' => array(
 433                                 ApiBase::PARAM_DFLT => false,
 434                                 ApiBase::PARAM_DEPRECATED => true,
 435                         ),
 436                         'unwatch' => array(
 437                                 ApiBase::PARAM_DFLT => false,
 438                                 ApiBase::PARAM_DEPRECATED => true,
 439                         ),
 440                         'watchlist' => array(
 441                                 ApiBase::PARAM_DFLT => 'preferences',
 442                                 ApiBase::PARAM_TYPE => array(
 443                                         'watch',
 444                                         'unwatch',
 445                                         'preferences',
 446                                         'nochange'
 447                                 ),
 448                         ),
 449                         'md5' => null,
 450                         'prependtext' => null,
 451                         'appendtext' => null,
 452                         'undo' => array(
 453                                 ApiBase::PARAM_TYPE => 'integer'
 454                         ),
 455                         'undoafter' => array(
 456                                 ApiBase::PARAM_TYPE => 'integer'
 457                         ),
 458                         'redirect' => array(
 459                                 ApiBase::PARAM_TYPE => 'boolean',
 460                                 ApiBase::PARAM_DFLT => false,
 461                         ),
 462                 );
 463         }
 464
 465         protected function getParamDescription() {
 466                 $p = $this->getModulePrefix();
 467                 return array(
 468                         'title' => 'Page title',
 469                         'section' => 'Section number. 0 for the top section, \'new\' for a new section',
 470                         'text' => 'Page content',
 471                         'token' => 'Edit token. You can get one of these through prop=info',
 472                         'summary' => 'Edit summary. Also section title when section=new',
 473                         'minor' => 'Minor edit',
 474                         'notminor' => 'Non-minor edit',
 475                         'bot' => 'Mark this edit as bot',
 476                         'basetimestamp' => array( 'Timestamp of the base revision (gotten through prop=revisions&rvprop=timestamp).',
 477                                                 'Used to detect edit conflicts; leave unset to ignore conflicts.'
 478                         ),
 479                         'starttimestamp' => array( 'Timestamp when you obtained the edit token.',
 480                                                 'Used to detect edit conflicts; leave unset to ignore conflicts'
 481                         ),
 482                         'recreate' => 'Override any errors about the article having been deleted in the meantime',
 483                         'createonly' => 'Don\'t edit the page if it exists already',
 484                         'nocreate' => 'Throw an error if the page doesn\'t exist',
 485                         'watch' => 'Add the page to your watchlist',
 486                         'unwatch' => 'Remove the page from your watchlist',
 487                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 488                         'captchaid' => 'CAPTCHA ID from previous request',
 489                         'captchaword' => 'Answer to the CAPTCHA',
 490                         'md5' => array( "The MD5 hash of the {$p}text parameter, or the {$p}prependtext and {$p}appendtext parameters concatenated.",
 491                                         'If set, the edit won\'t be done unless the hash is correct' ),
 492                         'prependtext' => "Add this text to the beginning of the page. Overrides {$p}text",
 493                         'appendtext' => "Add this text to the end of the page. Overrides {$p}text",
 494                         'undo' => "Undo this revision. Overrides {$p}text, {$p}prependtext and {$p}appendtext",
 495                         'undoafter' => 'Undo all revisions from undo to this one. If not set, just undo one revision',
 496                         'redirect' => 'Automatically resolve redirects',
 497                 );
 498         }
 499
 500         public function needsToken() {
 501                 return true;
 502         }
 503
 504         public function getTokenSalt() {
 505                 return '';
 506         }
 507
 508         protected function getExamples() {
 509                 return array(
 510                         'Edit a page (anonymous user):',
 511                         '    api.php?action=edit&title=Test&summary=test%20summary&text=article%20content&basetimestamp=20070824123454&token=%2B\\',
 512                         'Prepend __NOTOC__ to a page (anonymous user):',
 513                         '    api.php?action=edit&title=Test&summary=NOTOC&minor=&prependtext=__NOTOC__%0A&basetimestamp=20070824123454&token=%2B\\',
 514                         'Undo r13579 through r13585 with autosummary (anonymous user):',
 515                         '    api.php?action=edit&title=Test&undo=13585&undoafter=13579&basetimestamp=20070824123454&token=%2B\\',
 516                 );
 517         }
 518
 519         public function getVersion() {
 520                 return __CLASS__ . ': $Id$';
 521         }
 522 }