includes/api/ApiEditPage.php

   1 <?php
   2 /**
   3  *
   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 /**
  28  * A module that allows for editing and creating pages.
  29  *
  30  * Currently, this wraps around the EditPage class in an ugly way,
  31  * EditPage.php should be rewritten to provide a cleaner interface
  32  * @ingroup API
  33  */
  34 class ApiEditPage extends ApiBase {
  35
  36         public function __construct( $query, $moduleName ) {
  37                 parent::__construct( $query, $moduleName );
  38         }
  39
  40         public function execute() {
  41                 $user = $this->getUser();
  42                 $params = $this->extractRequestParams();
  43
  44                 if ( is_null( $params['text'] ) && is_null( $params['appendtext'] ) &&
  45                                 is_null( $params['prependtext'] ) &&
  46                                 $params['undo'] == 0 )
  47                 {
  48                         $this->dieUsageMsg( 'missingtext' );
  49                 }
  50
  51                 $titleObj = $this->getTitleOrPageId( $params );
  52                 if ( $titleObj->isExternal() ) {
  53                         $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
  54                 }
  55
  56                 $apiResult = $this->getResult();
  57
  58                 if ( $params['redirect'] ) {
  59                         if ( $titleObj->isRedirect() ) {
  60                                 $oldTitle = $titleObj;
  61
  62                                 $titles = Title::newFromRedirectArray( Revision::newFromTitle( $oldTitle )->getText( Revision::FOR_THIS_USER ) );
  63                                 // array_shift( $titles );
  64
  65                                 $redirValues = array();
  66                                 foreach ( $titles as $id => $newTitle ) {
  67
  68                                         if ( !isset( $titles[ $id - 1 ] ) ) {
  69                                                 $titles[ $id - 1 ] = $oldTitle;
  70                                         }
  71
  72                                         $redirValues[] = array(
  73                                                 'from' => $titles[ $id - 1 ]->getPrefixedText(),
  74                                                 'to' => $newTitle->getPrefixedText()
  75                                         );
  76
  77                                         $titleObj = $newTitle;
  78                                 }
  79
  80                                 $apiResult->setIndexedTagName( $redirValues, 'r' );
  81                                 $apiResult->addValue( null, 'redirects', $redirValues );
  82                         }
  83                 }
  84
  85                 if ( $params['createonly'] && $titleObj->exists() ) {
  86                         $this->dieUsageMsg( 'createonly-exists' );
  87                 }
  88                 if ( $params['nocreate'] && !$titleObj->exists() ) {
  89                         $this->dieUsageMsg( 'nocreate-missing' );
  90                 }
  91
  92                 // Now let's check whether we're even allowed to do this
  93                 $errors = $titleObj->getUserPermissionsErrors( 'edit', $user );
  94                 if ( !$titleObj->exists() ) {
  95                         $errors = array_merge( $errors, $titleObj->getUserPermissionsErrors( 'create', $user ) );
  96                 }
  97                 if ( count( $errors ) ) {
  98                         $this->dieUsageMsg( $errors[0] );
  99                 }
 100
 101                 $articleObj = Article::newFromTitle( $titleObj, $this->getContext() );
 102
 103                 $toMD5 = $params['text'];
 104                 if ( !is_null( $params['appendtext'] ) || !is_null( $params['prependtext'] ) )
 105                 {
 106                         // For non-existent pages, Article::getContent()
 107                         // returns an interface message rather than ''
 108                         // We do want getContent()'s behavior for non-existent
 109                         // MediaWiki: pages, though
 110                         if ( $articleObj->getID() == 0 && $titleObj->getNamespace() != NS_MEDIAWIKI ) {
 111                                 $content = '';
 112                         } else {
 113                                 $content = $articleObj->getContent();
 114                         }
 115
 116                         if ( !is_null( $params['section'] ) ) {
 117                                 // Process the content for section edits
 118                                 global $wgParser;
 119                                 $section = intval( $params['section'] );
 120                                 $content = $wgParser->getSection( $content, $section, false );
 121                                 if ( $content === false ) {
 122                                         $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
 123                                 }
 124                         }
 125                         $params['text'] = $params['prependtext'] . $content . $params['appendtext'];
 126                         $toMD5 = $params['prependtext'] . $params['appendtext'];
 127                 }
 128
 129                 if ( $params['undo'] > 0 ) {
 130                         if ( $params['undoafter'] > 0 ) {
 131                                 if ( $params['undo'] < $params['undoafter'] ) {
 132                                         list( $params['undo'], $params['undoafter'] ) =
 133                                         array( $params['undoafter'], $params['undo'] );
 134                                 }
 135                                 $undoafterRev = Revision::newFromID( $params['undoafter'] );
 136                         }
 137                         $undoRev = Revision::newFromID( $params['undo'] );
 138                         if ( is_null( $undoRev ) || $undoRev->isDeleted( Revision::DELETED_TEXT ) ) {
 139                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undo'] ) );
 140                         }
 141
 142                         if ( $params['undoafter'] == 0 ) {
 143                                 $undoafterRev = $undoRev->getPrevious();
 144                         }
 145                         if ( is_null( $undoafterRev ) || $undoafterRev->isDeleted( Revision::DELETED_TEXT ) ) {
 146                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undoafter'] ) );
 147                         }
 148
 149                         if ( $undoRev->getPage() != $articleObj->getID() ) {
 150                                 $this->dieUsageMsg( array( 'revwrongpage', $undoRev->getID(), $titleObj->getPrefixedText() ) );
 151                         }
 152                         if ( $undoafterRev->getPage() != $articleObj->getID() ) {
 153                                 $this->dieUsageMsg( array( 'revwrongpage', $undoafterRev->getID(), $titleObj->getPrefixedText() ) );
 154                         }
 155
 156                         $newtext = $articleObj->getUndoText( $undoRev, $undoafterRev );
 157                         if ( $newtext === false ) {
 158                                 $this->dieUsageMsg( 'undo-failure' );
 159                         }
 160                         $params['text'] = $newtext;
 161                         // If no summary was given and we only undid one rev,
 162                         // use an autosummary
 163                         if ( is_null( $params['summary'] ) && $titleObj->getNextRevisionID( $undoafterRev->getID() ) == $params['undo'] ) {
 164                                 $params['summary'] = wfMsgForContent( 'undo-summary', $params['undo'], $undoRev->getUserText() );
 165                         }
 166                 }
 167
 168                 // See if the MD5 hash checks out
 169                 if ( !is_null( $params['md5'] ) && md5( $toMD5 ) !== $params['md5'] ) {
 170                         $this->dieUsageMsg( 'hashcheckfailed' );
 171                 }
 172
 173                 // EditPage wants to parse its stuff from a WebRequest
 174                 // That interface kind of sucks, but it's workable
 175                 $requestArray = array(
 176                         'wpTextbox1' => $params['text'],
 177                         'wpEditToken' => $params['token'],
 178                         'wpIgnoreBlankSummary' => ''
 179                 );
 180
 181                 if ( !is_null( $params['summary'] ) ) {
 182                         $requestArray['wpSummary'] = $params['summary'];
 183                 }
 184
 185                 if ( !is_null( $params['sectiontitle'] ) ) {
 186                         $requestArray['wpSectionTitle'] = $params['sectiontitle'];
 187                 }
 188
 189                 // Watch out for basetimestamp == ''
 190                 // wfTimestamp() treats it as NOW, almost certainly causing an edit conflict
 191                 if ( !is_null( $params['basetimestamp'] ) && $params['basetimestamp'] != '' ) {
 192                         $requestArray['wpEdittime'] = wfTimestamp( TS_MW, $params['basetimestamp'] );
 193                 } else {
 194                         $requestArray['wpEdittime'] = $articleObj->getTimestamp();
 195                 }
 196
 197                 if ( !is_null( $params['starttimestamp'] ) && $params['starttimestamp'] != '' ) {
 198                         $requestArray['wpStarttime'] = wfTimestamp( TS_MW, $params['starttimestamp'] );
 199                 } else {
 200                         $requestArray['wpStarttime'] = wfTimestampNow();        // Fake wpStartime
 201                 }
 202
 203                 if ( $params['minor'] || ( !$params['notminor'] && $user->getOption( 'minordefault' ) ) )       {
 204                         $requestArray['wpMinoredit'] = '';
 205                 }
 206
 207                 if ( $params['recreate'] ) {
 208                         $requestArray['wpRecreate'] = '';
 209                 }
 210
 211                 if ( !is_null( $params['section'] ) ) {
 212                         $section = intval( $params['section'] );
 213                         if ( $section == 0 && $params['section'] != '0' && $params['section'] != 'new' ) {
 214                                 $this->dieUsage( "The section parameter must be set to an integer or 'new'", "invalidsection" );
 215                         }
 216                         $requestArray['wpSection'] = $params['section'];
 217                 } else {
 218                         $requestArray['wpSection'] = '';
 219                 }
 220
 221                 $watch = $this->getWatchlistValue( $params['watchlist'], $titleObj );
 222
 223                 // Deprecated parameters
 224                 if ( $params['watch'] ) {
 225                         $watch = true;
 226                 } elseif ( $params['unwatch'] ) {
 227                         $watch = false;
 228                 }
 229
 230                 if ( $watch ) {
 231                         $requestArray['wpWatchthis'] = '';
 232                 }
 233
 234                 global $wgTitle, $wgRequest;
 235
 236                 $req = new DerivativeRequest( $this->getRequest(), $requestArray, true );
 237
 238                 // Some functions depend on $wgTitle == $ep->mTitle
 239                 // TODO: Make them not or check if they still do
 240                 $wgTitle = $titleObj;
 241
 242                 $ep = new EditPage( $articleObj );
 243                 $ep->setContextTitle( $titleObj );
 244                 $ep->importFormData( $req );
 245
 246                 // Run hooks
 247                 // Handle APIEditBeforeSave parameters
 248                 $r = array();
 249                 if ( !wfRunHooks( 'APIEditBeforeSave', array( $ep, $ep->textbox1, &$r ) ) ) {
 250                         if ( count( $r ) ) {
 251                                 $r['result'] = 'Failure';
 252                                 $apiResult->addValue( null, $this->getModuleName(), $r );
 253                                 return;
 254                         } else {
 255                                 $this->dieUsageMsg( 'hookaborted' );
 256                         }
 257                 }
 258
 259                 // Do the actual save
 260                 $oldRevId = $articleObj->getRevIdFetched();
 261                 $result = null;
 262                 // Fake $wgRequest for some hooks inside EditPage
 263                 // @todo FIXME: This interface SUCKS
 264                 $oldRequest = $wgRequest;
 265                 $wgRequest = $req;
 266
 267                 $status = $ep->internalAttemptSave( $result, $user->isAllowed( 'bot' ) && $params['bot'] );
 268                 $wgRequest = $oldRequest;
 269                 global $wgMaxArticleSize;
 270
 271                 switch( $status->value ) {
 272                         case EditPage::AS_HOOK_ERROR:
 273                         case EditPage::AS_HOOK_ERROR_EXPECTED:
 274                                 $this->dieUsageMsg( 'hookaborted' );
 275
 276                         case EditPage::AS_IMAGE_REDIRECT_ANON:
 277                                 $this->dieUsageMsg( 'noimageredirect-anon' );
 278
 279                         case EditPage::AS_IMAGE_REDIRECT_LOGGED:
 280                                 $this->dieUsageMsg( 'noimageredirect-logged' );
 281
 282                         case EditPage::AS_SPAM_ERROR:
 283                                 $this->dieUsageMsg( array( 'spamdetected', $result['spam'] ) );
 284
 285                         case EditPage::AS_BLOCKED_PAGE_FOR_USER:
 286                                 $this->dieUsageMsg( 'blockedtext' );
 287
 288                         case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 289                         case EditPage::AS_CONTENT_TOO_BIG:
 290                                 $this->dieUsageMsg( array( 'contenttoobig', $wgMaxArticleSize ) );
 291
 292                         case EditPage::AS_READ_ONLY_PAGE_ANON:
 293                                 $this->dieUsageMsg( 'noedit-anon' );
 294
 295                         case EditPage::AS_READ_ONLY_PAGE_LOGGED:
 296                                 $this->dieUsageMsg( 'noedit' );
 297
 298                         case EditPage::AS_READ_ONLY_PAGE:
 299                                 $this->dieReadOnly();
 300
 301                         case EditPage::AS_RATE_LIMITED:
 302                                 $this->dieUsageMsg( 'actionthrottledtext' );
 303
 304                         case EditPage::AS_ARTICLE_WAS_DELETED:
 305                                 $this->dieUsageMsg( 'wasdeleted' );
 306
 307                         case EditPage::AS_NO_CREATE_PERMISSION:
 308                                 $this->dieUsageMsg( 'nocreate-loggedin' );
 309
 310                         case EditPage::AS_BLANK_ARTICLE:
 311                                 $this->dieUsageMsg( 'blankpage' );
 312
 313                         case EditPage::AS_CONFLICT_DETECTED:
 314                                 $this->dieUsageMsg( 'editconflict' );
 315
 316                         // case EditPage::AS_SUMMARY_NEEDED: Can't happen since we set wpIgnoreBlankSummary
 317                         case EditPage::AS_TEXTBOX_EMPTY:
 318                                 $this->dieUsageMsg( 'emptynewsection' );
 319
 320                         case EditPage::AS_SUCCESS_NEW_ARTICLE:
 321                                 $r['new'] = '';
 322
 323                         case EditPage::AS_SUCCESS_UPDATE:
 324                                 $r['result'] = 'Success';
 325                                 $r['pageid'] = intval( $titleObj->getArticleID() );
 326                                 $r['title'] = $titleObj->getPrefixedText();
 327                                 $newRevId = $articleObj->getLatest();
 328                                 if ( $newRevId == $oldRevId ) {
 329                                         $r['nochange'] = '';
 330                                 } else {
 331                                         $r['oldrevid'] = intval( $oldRevId );
 332                                         $r['newrevid'] = intval( $newRevId );
 333                                         $r['newtimestamp'] = wfTimestamp( TS_ISO_8601,
 334                                                 $articleObj->getTimestamp() );
 335                                 }
 336                                 break;
 337
 338                         case EditPage::AS_SUMMARY_NEEDED:
 339                                 $this->dieUsageMsg( 'summaryrequired' );
 340
 341                         case EditPage::AS_END:
 342                                 // $status came from WikiPage::doEdit()
 343                                 $errors = $status->getErrorsArray();
 344                                 $this->dieUsageMsg( $errors[0] ); // TODO: Add new errors to message map
 345                                 break;
 346                         default:
 347                                 if ( is_string( $status->value ) && strlen( $status->value ) ) {
 348                                         $this->dieUsage( "An unknown return value was returned by Editpage. The code returned was \"{$status->value}\"" , $status->value );
 349                                 } else {
 350                                         $this->dieUsageMsg( array( 'unknownerror', $status->value ) );
 351                                 }
 352                 }
 353                 $apiResult->addValue( null, $this->getModuleName(), $r );
 354         }
 355
 356         public function mustBePosted() {
 357                 return true;
 358         }
 359
 360         public function isWriteMode() {
 361                 return true;
 362         }
 363
 364         public function getDescription() {
 365                 return 'Create and edit pages.';
 366         }
 367
 368         public function getPossibleErrors() {
 369                 global $wgMaxArticleSize;
 370
 371                 return array_merge( parent::getPossibleErrors(),
 372                         $this->getTitleOrPageIdErrorMessage(),
 373                         array(
 374                                 array( 'missingtext' ),
 375                                 array( 'createonly-exists' ),
 376                                 array( 'nocreate-missing' ),
 377                                 array( 'nosuchrevid', 'undo' ),
 378                                 array( 'nosuchrevid', 'undoafter' ),
 379                                 array( 'revwrongpage', 'id', 'text' ),
 380                                 array( 'undo-failure' ),
 381                                 array( 'hashcheckfailed' ),
 382                                 array( 'hookaborted' ),
 383                                 array( 'noimageredirect-anon' ),
 384                                 array( 'noimageredirect-logged' ),
 385                                 array( 'spamdetected', 'spam' ),
 386                                 array( 'summaryrequired' ),
 387                                 array( 'blockedtext' ),
 388                                 array( 'contenttoobig', $wgMaxArticleSize ),
 389                                 array( 'noedit-anon' ),
 390                                 array( 'noedit' ),
 391                                 array( 'actionthrottledtext' ),
 392                                 array( 'wasdeleted' ),
 393                                 array( 'nocreate-loggedin' ),
 394                                 array( 'blankpage' ),
 395                                 array( 'editconflict' ),
 396                                 array( 'emptynewsection' ),
 397                                 array( 'unknownerror', 'retval' ),
 398                                 array( 'code' => 'nosuchsection', 'info' => 'There is no section section.' ),
 399                                 array( 'code' => 'invalidsection', 'info' => 'The section parameter must be set to an integer or \'new\'' ),
 400                                 array( 'customcssprotected' ),
 401                                 array( 'customjsprotected' ),
 402                         )
 403                 );
 404         }
 405
 406         public function getAllowedParams() {
 407                 return array(
 408                         'title' => array(
 409                                 ApiBase::PARAM_TYPE => 'string',
 410                         ),
 411                         'pageid' => array(
 412                                 ApiBase::PARAM_TYPE => 'integer',
 413                         ),
 414                         'section' => null,
 415                         'sectiontitle' => array(
 416                                 ApiBase::PARAM_TYPE => 'string',
 417                                 ApiBase::PARAM_REQUIRED => false,
 418                         ),
 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                         'watch' => array(
 431                                 ApiBase::PARAM_DFLT => false,
 432                                 ApiBase::PARAM_DEPRECATED => true,
 433                         ),
 434                         'unwatch' => array(
 435                                 ApiBase::PARAM_DFLT => false,
 436                                 ApiBase::PARAM_DEPRECATED => true,
 437                         ),
 438                         'watchlist' => array(
 439                                 ApiBase::PARAM_DFLT => 'preferences',
 440                                 ApiBase::PARAM_TYPE => array(
 441                                         'watch',
 442                                         'unwatch',
 443                                         'preferences',
 444                                         'nochange'
 445                                 ),
 446                         ),
 447                         'md5' => null,
 448                         'prependtext' => null,
 449                         'appendtext' => null,
 450                         'undo' => array(
 451                                 ApiBase::PARAM_TYPE => 'integer'
 452                         ),
 453                         'undoafter' => array(
 454                                 ApiBase::PARAM_TYPE => 'integer'
 455                         ),
 456                         'redirect' => array(
 457                                 ApiBase::PARAM_TYPE => 'boolean',
 458                                 ApiBase::PARAM_DFLT => false,
 459                         ),
 460                 );
 461         }
 462
 463         public function getParamDescription() {
 464                 $p = $this->getModulePrefix();
 465                 return array(
 466                         'title' => "Title of the page you want to edit. Cannot be used together with {$p}pageid",
 467                         'pageid' => "Page ID of the page you want to edit. Cannot be used together with {$p}title",
 468                         'section' => 'Section number. 0 for the top section, \'new\' for a new section',
 469                         'sectiontitle' => 'The title for a new section',
 470                         'text' => 'Page content',
 471                         'token' => array( 'Edit token. You can get one of these through prop=info.',
 472                                                 "The token should always be sent as the last parameter, or at least, after the {$p}text parameter"
 473                         ),
 474                         'summary' => "Edit summary. Also section title when {$p}section=new and {$p}sectiontitle is not set",
 475                         'minor' => 'Minor edit',
 476                         'notminor' => 'Non-minor edit',
 477                         'bot' => 'Mark this edit as bot',
 478                         'basetimestamp' => array( 'Timestamp of the base revision (obtained through prop=revisions&rvprop=timestamp).',
 479                                                 'Used to detect edit conflicts; leave unset to ignore conflicts'
 480                         ),
 481                         'starttimestamp' => array( 'Timestamp when you obtained the edit token.',
 482                                                 'Used to detect edit conflicts; leave unset to ignore conflicts'
 483                         ),
 484                         'recreate' => 'Override any errors about the article having been deleted in the meantime',
 485                         'createonly' => 'Don\'t edit the page if it exists already',
 486                         'nocreate' => 'Throw an error if the page doesn\'t exist',
 487                         'watch' => 'Add the page to your watchlist',
 488                         'unwatch' => 'Remove the page from your watchlist',
 489                         'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
 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' => array( "Add this text to the end of the page. Overrides {$p}text.",
 494                                                 "Use {$p}section=new to append a new section" ),
 495                         'undo' => "Undo this revision. Overrides {$p}text, {$p}prependtext and {$p}appendtext",
 496                         'undoafter' => 'Undo all revisions from undo to this one. If not set, just undo one revision',
 497                         'redirect' => 'Automatically resolve redirects',
 498                 );
 499         }
 500
 501         public function needsToken() {
 502                 return true;
 503         }
 504
 505         public function getTokenSalt() {
 506                 return '';
 507         }
 508
 509         public function getExamples() {
 510                 return array(
 511
 512                         'api.php?action=edit&title=Test&summary=test%20summary&text=article%20content&basetimestamp=20070824123454&token=%2B\\'
 513                                 => 'Edit a page (anonymous user)',
 514
 515                         'api.php?action=edit&title=Test&summary=NOTOC&minor=&prependtext=__NOTOC__%0A&basetimestamp=20070824123454&token=%2B\\'
 516                                 => 'Prepend __NOTOC__ to a page (anonymous user)',
 517                         'api.php?action=edit&title=Test&undo=13585&undoafter=13579&basetimestamp=20070824123454&token=%2B\\'
 518                                 => 'Undo r13579 through r13585 with autosummary (anonymous user)',
 519                 );
 520         }
 521
 522         public function getHelpUrls() {
 523                 return 'https://www.mediawiki.org/wiki/API:Edit';
 524         }
 525
 526         public function getVersion() {
 527                 return __CLASS__ . ': $Id$';
 528         }
 529 }