includes/api/ApiEditPage.php

   1 <?php
   2
   3 /*
   4  * Created on August 16, 2007
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 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  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 = $this->extractRequestParams();
  47                 if(is_null($params['title']))
  48                         $this->dieUsageMsg(array('missingparam', 'title'));
  49                 if(is_null($params['text']) && is_null($params['appendtext']) &&
  50                                 is_null($params['prependtext']) &&
  51                                 $params['undo'] == 0)
  52                         $this->dieUsageMsg(array('missingtext'));
  53                 if(is_null($params['token']))
  54                         $this->dieUsageMsg(array('missingparam', 'token'));
  55                 if(!$wgUser->matchEditToken($params['token']))
  56                         $this->dieUsageMsg(array('sessionfailure'));
  57
  58                 $titleObj = Title::newFromText($params['title']);
  59                 if(!$titleObj)
  60                         $this->dieUsageMsg(array('invalidtitle', $params['title']));
  61                 // Some functions depend on $wgTitle == $ep->mTitle
  62                 global $wgTitle;
  63                 $wgTitle = $titleObj;
  64
  65                 if($params['createonly'] && $titleObj->exists())
  66                         $this->dieUsageMsg(array('createonly-exists'));
  67                 if($params['nocreate'] && !$titleObj->exists())
  68                         $this->dieUsageMsg(array('nocreate-missing'));
  69
  70                 // Now let's check whether we're even allowed to do this
  71                 $errors = $titleObj->getUserPermissionsErrors('edit', $wgUser);
  72                 if(!$titleObj->exists())
  73                         $errors = array_merge($errors, $titleObj->getUserPermissionsErrors('create', $wgUser));
  74                 if(count($errors))
  75                         $this->dieUsageMsg($errors[0]);
  76
  77                 $articleObj = new Article($titleObj);
  78                 $toMD5 = $params['text'];
  79                 if(!is_null($params['appendtext']) || !is_null($params['prependtext']))
  80                 {
  81                         // For non-existent pages, Article::getContent()
  82                         // returns an interface message rather than ''
  83                         // We do want getContent()'s behavior for non-existent
  84                         // MediaWiki: pages, though
  85                         if($articleObj->getID() == 0 && $titleObj->getNamespace() != NS_MEDIAWIKI)
  86                                 $content = '';
  87                         else
  88                                 $content = $articleObj->getContent();
  89
  90                         if (!is_null($params['section']))
  91                         {
  92                                 // Process the content for section edits
  93                                 global $wgParser;
  94                                 $section = intval($params['section']);
  95                                 $content = $wgParser->getSection($content, $section, false);
  96                                 if ($content === false)
  97                                         $this->dieUsage("There is no section {$section}.", 'nosuchsection');
  98                         }
  99                         $params['text'] = $params['prependtext'] . $content . $params['appendtext'];
 100                         $toMD5 = $params['prependtext'] . $params['appendtext'];
 101                 }
 102
 103                 if($params['undo'] > 0)
 104                 {
 105                         if($params['undoafter'] > 0)
 106                         {
 107                                 if($params['undo'] < $params['undoafter'])
 108                                         list($params['undo'], $params['undoafter']) =
 109                                         array($params['undoafter'], $params['undo']);
 110                                 $undoafterRev = Revision::newFromID($params['undoafter']);
 111                         }
 112                         $undoRev = Revision::newFromID($params['undo']);
 113                         if(is_null($undoRev) || $undoRev->isDeleted(Revision::DELETED_TEXT))
 114                                 $this->dieUsageMsg(array('nosuchrevid', $params['undo']));
 115                         if($params['undoafter'] == 0)
 116                                 $undoafterRev = $undoRev->getPrevious();
 117                         if(is_null($undoafterRev) || $undoafterRev->isDeleted(Revision::DELETED_TEXT))
 118                                 $this->dieUsageMsg(array('nosuchrevid', $params['undoafter']));
 119                         if($undoRev->getPage() != $articleObj->getID())
 120                                 $this->dieUsageMsg(array('revwrongpage', $undoRev->getID(), $titleObj->getPrefixedText()));
 121                         if($undoafterRev->getPage() != $articleObj->getID())
 122                                 $this->dieUsageMsg(array('revwrongpage', $undoafterRev->getID(), $titleObj->getPrefixedText()));
 123                         $newtext = $articleObj->getUndoText($undoRev, $undoafterRev);
 124                         if($newtext === false)
 125                                 $this->dieUsageMsg(array('undo-failure'));
 126                         $params['text'] = $newtext;
 127                         // If no summary was given and we only undid one rev,
 128                         // use an autosummary
 129                         if(is_null($params['summary']) && $titleObj->getNextRevisionID($undoafterRev->getID()) == $params['undo'])
 130                                 $params['summary'] = wfMsgForContent('undo-summary', $params['undo'], $undoRev->getUserText());
 131                 }
 132
 133                 # See if the MD5 hash checks out
 134                 if(!is_null($params['md5']))
 135                         if(md5($toMD5) !== $params['md5'])
 136                                 $this->dieUsageMsg(array('hashcheckfailed'));
 137
 138                 $ep = new EditPage($articleObj);
 139                 // EditPage wants to parse its stuff from a WebRequest
 140                 // That interface kind of sucks, but it's workable
 141                 $reqArr = array('wpTextbox1' => $params['text'],
 142                                 'wpEdittoken' => $params['token'],
 143                                 'wpIgnoreBlankSummary' => ''
 144                 );
 145                 if(!is_null($params['summary']))
 146                         $reqArr['wpSummary'] = $params['summary'];
 147                 # Watch out for basetimestamp == ''
 148                 # wfTimestamp() treats it as NOW, almost certainly causing an edit conflict
 149                 if(!is_null($params['basetimestamp']) && $params['basetimestamp'] != '')
 150                         $reqArr['wpEdittime'] = wfTimestamp(TS_MW, $params['basetimestamp']);
 151                 else
 152                         $reqArr['wpEdittime'] = $articleObj->getTimestamp();
 153                 if(!is_null($params['starttimestamp']) && $params['starttimestamp'] != '')
 154                         $reqArr['wpStarttime'] = wfTimestamp(TS_MW, $params['starttimestamp']);
 155                 else
 156                         # Fake wpStartime
 157                         $reqArr['wpStarttime'] = $reqArr['wpEdittime'];
 158                 if($params['minor'] || (!$params['notminor'] && $wgUser->getOption('minordefault')))
 159                         $reqArr['wpMinoredit'] = '';
 160                 if($params['recreate'])
 161                         $reqArr['wpRecreate'] = '';
 162                 if(!is_null($params['section']))
 163                 {
 164                         $section = intval($params['section']);
 165                         if($section == 0 && $params['section'] != '0' && $params['section'] != 'new')
 166                                 $this->dieUsage("The section parameter must be set to an integer or 'new'", "invalidsection");
 167                         $reqArr['wpSection'] = $params['section'];
 168                 }
 169                 else
 170                         $reqArr['wpSection'] = '';
 171
 172                 if($params['watch'])
 173                         $watch = true;
 174                 else if($params['unwatch'])
 175                         $watch = false;
 176                 else if($titleObj->userIsWatching())
 177                         $watch = true;
 178                 else if($wgUser->getOption('watchdefault'))
 179                         $watch = true;
 180                 else if($wgUser->getOption('watchcreations') && !$titleObj->exists())
 181                         $watch = true;
 182                 else
 183                         $watch = false;
 184                 if($watch)
 185                         $reqArr['wpWatchthis'] = '';
 186
 187                 $req = new FauxRequest($reqArr, true);
 188                 $ep->importFormData($req);
 189
 190                 # Run hooks
 191                 # Handle CAPTCHA parameters
 192                 global $wgRequest;
 193                 if(!is_null($params['captchaid']))
 194                         $wgRequest->setVal( 'wpCaptchaId', $params['captchaid'] );
 195                 if(!is_null($params['captchaword']))
 196                         $wgRequest->setVal( 'wpCaptchaWord', $params['captchaword'] );
 197                 $r = array();
 198                 if(!wfRunHooks('APIEditBeforeSave', array(&$ep, $ep->textbox1, &$r)))
 199                 {
 200                         if(count($r))
 201                         {
 202                                 $r['result'] = "Failure";
 203                                 $this->getResult()->addValue(null, $this->getModuleName(), $r);
 204                                 return;
 205                         }
 206                         else
 207                                 $this->dieUsageMsg(array('hookaborted'));
 208                 }
 209
 210                 # Do the actual save
 211                 $oldRevId = $articleObj->getRevIdFetched();
 212                 $result = null;
 213                 # Fake $wgRequest for some hooks inside EditPage
 214                 # FIXME: This interface SUCKS
 215                 $oldRequest = $wgRequest;
 216                 $wgRequest = $req;
 217
 218                 $retval = $ep->internalAttemptSave($result, $wgUser->isAllowed('bot') && $params['bot']);
 219                 $wgRequest = $oldRequest;
 220                 switch($retval)
 221                 {
 222                         case EditPage::AS_HOOK_ERROR:
 223                         case EditPage::AS_HOOK_ERROR_EXPECTED:
 224                                 $this->dieUsageMsg(array('hookaborted'));
 225                         case EditPage::AS_IMAGE_REDIRECT_ANON:
 226                                 $this->dieUsageMsg(array('noimageredirect-anon'));
 227                         case EditPage::AS_IMAGE_REDIRECT_LOGGED:
 228                                 $this->dieUsageMsg(array('noimageredirect-logged'));
 229                         case EditPage::AS_SPAM_ERROR:
 230                                 $this->dieUsageMsg(array('spamdetected', $result['spam']));
 231                         case EditPage::AS_FILTERING:
 232                                 $this->dieUsageMsg(array('filtered'));
 233                         case EditPage::AS_BLOCKED_PAGE_FOR_USER:
 234                                 $this->dieUsageMsg(array('blockedtext'));
 235                         case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 236                         case EditPage::AS_CONTENT_TOO_BIG:
 237                                 global $wgMaxArticleSize;
 238                                 $this->dieUsageMsg(array('contenttoobig', $wgMaxArticleSize));
 239                         case EditPage::AS_READ_ONLY_PAGE_ANON:
 240                                 $this->dieUsageMsg(array('noedit-anon'));
 241                         case EditPage::AS_READ_ONLY_PAGE_LOGGED:
 242                                 $this->dieUsageMsg(array('noedit'));
 243                         case EditPage::AS_READ_ONLY_PAGE:
 244                                 $this->dieReadOnly();
 245                         case EditPage::AS_RATE_LIMITED:
 246                                 $this->dieUsageMsg(array('actionthrottledtext'));
 247                         case EditPage::AS_ARTICLE_WAS_DELETED:
 248                                 $this->dieUsageMsg(array('wasdeleted'));
 249                         case EditPage::AS_NO_CREATE_PERMISSION:
 250                                 $this->dieUsageMsg(array('nocreate-loggedin'));
 251                         case EditPage::AS_BLANK_ARTICLE:
 252                                 $this->dieUsageMsg(array('blankpage'));
 253                         case EditPage::AS_CONFLICT_DETECTED:
 254                                 $this->dieUsageMsg(array('editconflict'));
 255                         #case EditPage::AS_SUMMARY_NEEDED: Can't happen since we set wpIgnoreBlankSummary
 256                         case EditPage::AS_TEXTBOX_EMPTY:
 257                                 $this->dieUsageMsg(array('emptynewsection'));
 258                         case EditPage::AS_END:
 259                                 # This usually means some kind of race condition
 260                                 # or DB weirdness occurred. Throw an unknown error here.
 261                                 $this->dieUsageMsg(array('unknownerror'));
 262                         case EditPage::AS_SUCCESS_NEW_ARTICLE:
 263                                 $r['new'] = '';
 264                         case EditPage::AS_SUCCESS_UPDATE:
 265                                 $r['result'] = "Success";
 266                                 $r['pageid'] = intval($titleObj->getArticleID());
 267                                 $r['title'] = $titleObj->getPrefixedText();
 268                                 # HACK: We create a new Article object here because getRevIdFetched()
 269                                 # refuses to be run twice, and because Title::getLatestRevId()
 270                                 # won't fetch from the master unless we select for update, which we
 271                                 # don't want to do.
 272                                 $newArticle = new Article($titleObj);
 273                                 $newRevId = $newArticle->getRevIdFetched();
 274                                 if($newRevId == $oldRevId)
 275                                         $r['nochange'] = '';
 276                                 else
 277                                 {
 278                                         $r['oldrevid'] = intval($oldRevId);
 279                                         $r['newrevid'] = intval($newRevId);
 280                                         $r['newtimestamp'] = wfTimestamp(TS_ISO_8601,
 281                                                 $newArticle->getTimestamp());
 282                                 }
 283                                 break;
 284                         default:
 285                                 $this->dieUsageMsg(array('unknownerror', $retval));
 286                 }
 287                 $this->getResult()->addValue(null, $this->getModuleName(), $r);
 288         }
 289
 290         public function mustBePosted() {
 291                 return true;
 292         }
 293
 294         public function isWriteMode() {
 295                 return true;
 296         }
 297
 298         protected function getDescription() {
 299                 return 'Create and edit pages.';
 300         }
 301
 302         protected function getAllowedParams() {
 303                 return array (
 304                         'title' => null,
 305                         'section' => null,
 306                         'text' => null,
 307                         'token' => null,
 308                         'summary' => null,
 309                         'minor' => false,
 310                         'notminor' => false,
 311                         'bot' => false,
 312                         'basetimestamp' => null,
 313                         'starttimestamp' => null,
 314                         'recreate' => false,
 315                         'createonly' => false,
 316                         'nocreate' => false,
 317                         'captchaword' => null,
 318                         'captchaid' => null,
 319                         'watch' => false,
 320                         'unwatch' => false,
 321                         'md5' => null,
 322                         'prependtext' => null,
 323                         'appendtext' => null,
 324                         'undo' => array(
 325                                 ApiBase :: PARAM_TYPE => 'integer'
 326                         ),
 327                         'undoafter' => array(
 328                                 ApiBase :: PARAM_TYPE => 'integer'
 329                         ),
 330                 );
 331         }
 332
 333         protected function getParamDescription() {
 334                 return array (
 335                         'title' => 'Page title',
 336                         'section' => 'Section number. 0 for the top section, \'new\' for a new section',
 337                         'text' => 'Page content',
 338                         'token' => 'Edit token. You can get one of these through prop=info',
 339                         'summary' => 'Edit summary. Also section title when section=new',
 340                         'minor' => 'Minor edit',
 341                         'notminor' => 'Non-minor edit',
 342                         'bot' => 'Mark this edit as bot',
 343                         'basetimestamp' => array('Timestamp of the base revision (gotten through prop=revisions&rvprop=timestamp).',
 344                                                 'Used to detect edit conflicts; leave unset to ignore conflicts.'
 345                         ),
 346                         'starttimestamp' => array('Timestamp when you obtained the edit token.',
 347                                                 'Used to detect edit conflicts; leave unset to ignore conflicts.'
 348                         ),
 349                         'recreate' => 'Override any errors about the article having been deleted in the meantime',
 350                         'createonly' => 'Don\'t edit the page if it exists already',
 351                         'nocreate' => 'Throw an error if the page doesn\'t exist',
 352                         'watch' => 'Add the page to your watchlist',
 353                         'unwatch' => 'Remove the page from your watchlist',
 354                         'captchaid' => 'CAPTCHA ID from previous request',
 355                         'captchaword' => 'Answer to the CAPTCHA',
 356                         'md5' => array( 'The MD5 hash of the text parameter, or the prependtext and appendtext parameters concatenated.',
 357                                         'If set, the edit won\'t be done unless the hash is correct'),
 358                         'prependtext' => 'Add this text to the beginning of the page. Overrides text.',
 359                         'appendtext' => 'Add this text to the end of the page. Overrides text',
 360                         'undo' => 'Undo this revision. Overrides text, prependtext and appendtext',
 361                         'undoafter' => 'Undo all revisions from undo to this one. If not set, just undo one revision',
 362                 );
 363         }
 364
 365         protected function getExamples() {
 366                 return array (
 367                         "Edit a page (anonymous user):",
 368                         "    api.php?action=edit&title=Test&summary=test%20summary&text=article%20content&basetimestamp=20070824123454&token=%2B\\",
 369                         "Prepend __NOTOC__ to a page (anonymous user):",
 370                         "    api.php?action=edit&title=Test&summary=NOTOC&minor&prependtext=__NOTOC__%0A&basetimestamp=20070824123454&token=%2B\\",
 371                         "Undo r13579 through r13585 with autosummary(anonymous user):",
 372                         "    api.php?action=edit&title=Test&undo=13585&undoafter=13579&basetimestamp=20070824123454&token=%2B\\",
 373                 );
 374         }
 375
 376         public function getVersion() {
 377                 return __CLASS__ . ': $Id$';
 378         }
 379 }