includes/api/ApiEditPage.php

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