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                 $this->getMain()->requestWriteMode();
  47
  48                 $params = $this->extractRequestParams();
  49                 if(is_null($params['title']))
  50                         $this->dieUsageMsg(array('missingparam', 'title'));
  51                 if(is_null($params['text']) && is_null($params['appendtext']) && is_null($params['prependtext']))
  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', $params['title']));
  61
  62                 if($params['createonly'] && $titleObj->exists())
  63                         $this->dieUsageMsg(array('createonly-exists'));
  64                 if($params['nocreate'] && !$titleObj->exists())
  65                         $this->dieUsageMsg(array('nocreate-missing'));
  66
  67                 // Now let's check whether we're even allowed to do this
  68                 $errors = $titleObj->getUserPermissionsErrors('edit', $wgUser);
  69                 if(!$titleObj->exists())
  70                         $errors = array_merge($errors, $titleObj->getUserPermissionsErrors('create', $wgUser));
  71                 if(!empty($errors))
  72                         $this->dieUsageMsg($errors[0]);
  73
  74                 $articleObj = new Article($titleObj);
  75                 $toMD5 = $params['text'];
  76                 if(!is_null($params['appendtext']) || !is_null($params['prependtext']))
  77                 {
  78                         $content = $articleObj->getContent();
  79                         $params['text'] = $params['prependtext'] . $content . $params['appendtext'];
  80                         $toMD5 = $params['prependtext'] . $params['appendtext'];
  81                 }
  82
  83                 # See if the MD5 hash checks out
  84                 if(isset($params['md5']))
  85                         if(md5($toMD5) !== $params['md5'])
  86                                 $this->dieUsageMsg(array('hashcheckfailed'));
  87
  88                 $ep = new EditPage($articleObj);
  89                 // EditPage wants to parse its stuff from a WebRequest
  90                 // That interface kind of sucks, but it's workable
  91                 $reqArr = array('wpTextbox1' => $params['text'],
  92                                 'wpEdittoken' => $params['token'],
  93                                 'wpIgnoreBlankSummary' => ''
  94                 );
  95                 if(!is_null($params['summary']))
  96                         $reqArr['wpSummary'] = $params['summary'];
  97                 # Watch out for basetimestamp == ''
  98                 # wfTimestamp() treats it as NOW, almost certainly causing an edit conflict
  99                 if(!is_null($params['basetimestamp']) && $params['basetimestamp'] != '')
 100                         $reqArr['wpEdittime'] = wfTimestamp(TS_MW, $params['basetimestamp']);
 101                 else
 102                         $reqArr['wpEdittime'] = $articleObj->getTimestamp();
 103                 # Fake wpStartime
 104                 $reqArr['wpStarttime'] = $reqArr['wpEdittime'];
 105                 if($params['minor'] || (!$params['notminor'] && $wgUser->getOption('minordefault')))
 106                         $reqArr['wpMinoredit'] = '';
 107                 if($params['recreate'])
 108                         $reqArr['wpRecreate'] = '';
 109                 if(!is_null($params['section']))
 110                 {
 111                         $section = intval($params['section']);
 112                         if($section == 0 && $params['section'] != '0' && $params['section'] != 'new')
 113                                 $this->dieUsage("The section parameter must be set to an integer or 'new'", "invalidsection");
 114                         $reqArr['wpSection'] = $params['section'];
 115                 }
 116
 117                 if($params['watch'])
 118                         $watch = true;
 119                 else if($params['unwatch'])
 120                         $watch = false;
 121                 else if($titleObj->userIsWatching())
 122                         $watch = true;
 123                 else if($wgUser->getOption('watchdefault'))
 124                         $watch = true;
 125                 else if($wgUser->getOption('watchcreations') && !$titleObj->exists())
 126                         $watch = true;
 127                 else
 128                         $watch = false;
 129                 if($watch)
 130                         $reqArr['wpWatchthis'] = '';
 131
 132                 $req = new FauxRequest($reqArr, true);
 133                 $ep->importFormData($req);
 134
 135                 # Run hooks
 136                 # Handle CAPTCHA parameters
 137                 global $wgRequest;
 138                 if(isset($params['captchaid']))
 139                         $wgRequest->data['wpCaptchaId'] = $params['captchaid'];
 140                 if(isset($params['captchaword']))
 141                         $wgRequest->data['wpCaptchaWord'] = $params['captchaword'];
 142                 $r = array();
 143                 if(!wfRunHooks('APIEditBeforeSave', array(&$ep, $ep->textbox1, &$r)))
 144                 {
 145                         if(!empty($r))
 146                         {
 147                                 $r['result'] = "Failure";
 148                                 $this->getResult()->addValue(null, $this->getModuleName(), $r);
 149                                 return;
 150                         }
 151                         else
 152                                 $this->dieUsageMsg(array('hookaborted'));
 153                 }
 154
 155                 # Do the actual save
 156                 $oldRevId = $articleObj->getRevIdFetched();
 157                 $result = null;
 158                 # *Something* is setting $wgTitle to a title corresponding to "Msg",
 159                 # but that breaks API mode detection through is_null($wgTitle)
 160                 global $wgTitle;
 161                 $wgTitle = null;
 162                 # Fake $wgRequest for some hooks inside EditPage
 163                 # FIXME: This interface SUCKS
 164                 $oldRequest = $wgRequest;
 165                 $wgRequest = $req;
 166
 167                 $retval = $ep->internalAttemptSave($result, $wgUser->isAllowed('bot') && $params['bot']);
 168                 $wgRequest = $oldRequest;
 169                 switch($retval)
 170                 {
 171                         case EditPage::AS_HOOK_ERROR:
 172                         case EditPage::AS_HOOK_ERROR_EXPECTED:
 173                                 $this->dieUsageMsg(array('hookaborted'));
 174                         case EditPage::AS_IMAGE_REDIRECT_ANON:
 175                                 $this->dieUsageMsg(array('noimageredirect-anon'));
 176                         case EditPage::AS_IMAGE_REDIRECT_LOGGED:
 177                                 $this->dieUsageMsg(array('noimageredirect-logged'));
 178                         case EditPage::AS_SPAM_ERROR:
 179                                 $this->dieUsageMsg(array('spamdetected', $result['spam']));
 180                         case EditPage::AS_FILTERING:
 181                                 $this->dieUsageMsg(array('filtered'));
 182                         case EditPage::AS_BLOCKED_PAGE_FOR_USER:
 183                                 $this->dieUsageMsg(array('blockedtext'));
 184                         case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 185                         case EditPage::AS_CONTENT_TOO_BIG:
 186                                 global $wgMaxArticleSize;
 187                                 $this->dieUsageMsg(array('contenttoobig', $wgMaxArticleSize));
 188                         case EditPage::AS_READ_ONLY_PAGE_ANON:
 189                                 $this->dieUsageMsg(array('noedit-anon'));
 190                         case EditPage::AS_READ_ONLY_PAGE_LOGGED:
 191                                 $this->dieUsageMsg(array('noedit'));
 192                         case EditPage::AS_READ_ONLY_PAGE:
 193                                 $this->dieUsageMsg(array('readonlytext'));
 194                         case EditPage::AS_RATE_LIMITED:
 195                                 $this->dieUsageMsg(array('actionthrottledtext'));
 196                         case EditPage::AS_ARTICLE_WAS_DELETED:
 197                                 $this->dieUsageMsg(array('wasdeleted'));
 198                         case EditPage::AS_NO_CREATE_PERMISSION:
 199                                 $this->dieUsageMsg(array('nocreate-loggedin'));
 200                         case EditPage::AS_BLANK_ARTICLE:
 201                                 $this->dieUsageMsg(array('blankpage'));
 202                         case EditPage::AS_CONFLICT_DETECTED:
 203                                 $this->dieUsageMsg(array('editconflict'));
 204                         #case EditPage::AS_SUMMARY_NEEDED: Can't happen since we set wpIgnoreBlankSummary
 205                         case EditPage::AS_TEXTBOX_EMPTY:
 206                                 $this->dieUsageMsg(array('emptynewsection'));
 207                         case EditPage::AS_END:
 208                                 # This usually means some kind of race condition
 209                                 # or DB weirdness occurred. Throw an unknown error here.
 210                                 $this->dieUsageMsg(array('unknownerror'));
 211                         case EditPage::AS_SUCCESS_NEW_ARTICLE:
 212                                 $r['new'] = '';
 213                         case EditPage::AS_SUCCESS_UPDATE:
 214                                 $r['result'] = "Success";
 215                                 $r['pageid'] = $titleObj->getArticleID();
 216                                 $r['title'] = $titleObj->getPrefixedText();
 217                                 # HACK: We create a new Article object here because getRevIdFetched()
 218                                 # refuses to be run twice, and because Title::getLatestRevId()
 219                                 # won't fetch from the master unless we select for update, which we
 220                                 # don't want to do.
 221                                 $newArticle = new Article($titleObj);
 222                                 $newRevId = $newArticle->getRevIdFetched();
 223                                 if($newRevId == $oldRevId)
 224                                         $r['nochange'] = '';
 225                                 else
 226                                 {
 227                                         $r['oldrevid'] = $oldRevId;
 228                                         $r['newrevid'] = $newRevId;
 229                                 }
 230                                 break;
 231                         default:
 232                                 $this->dieUsageMsg(array('unknownerror', $retval));
 233                 }
 234                 $this->getResult()->addValue(null, $this->getModuleName(), $r);
 235         }
 236
 237         public function mustBePosted() {
 238                 return true;
 239         }
 240
 241         protected function getDescription() {
 242                 return 'Create and edit pages.';
 243         }
 244
 245         protected function getAllowedParams() {
 246                 return array (
 247                         'title' => null,
 248                         'section' => null,
 249                         'text' => null,
 250                         'token' => null,
 251                         'summary' => null,
 252                         'minor' => false,
 253                         'notminor' => false,
 254                         'bot' => false,
 255                         'basetimestamp' => null,
 256                         'recreate' => false,
 257                         'createonly' => false,
 258                         'nocreate' => false,
 259                         'captchaword' => null,
 260                         'captchaid' => null,
 261                         'watch' => false,
 262                         'unwatch' => false,
 263                         'md5' => null,
 264                         'prependtext' => null,
 265                         'appendtext' => null,
 266                 );
 267         }
 268
 269         protected function getParamDescription() {
 270                 return array (
 271                         'title' => 'Page title',
 272                         'section' => 'Section number. 0 for the top section, \'new\' for a new section',
 273                         'text' => 'Page content',
 274                         'token' => 'Edit token. You can get one of these through prop=info',
 275                         'summary' => 'Edit summary. Also section title when section=new',
 276                         'minor' => 'Minor edit',
 277                         'notminor' => 'Non-minor edit',
 278                         'bot' => 'Mark this edit as bot',
 279                         'basetimestamp' => array('Timestamp of the base revision (gotten through prop=revisions&rvprop=timestamp).',
 280                                                 'Used to detect edit conflicts; leave unset to ignore conflicts.'
 281                         ),
 282                         'recreate' => 'Override any errors about the article having been deleted in the meantime',
 283                         'createonly' => 'Don\'t edit the page if it exists already',
 284                         'nocreate' => 'Throw an error if the page doesn\'t exist',
 285                         'watch' => 'Add the page to your watchlist',
 286                         'unwatch' => 'Remove the page from your watchlist',
 287                         'captchaid' => 'CAPTCHA ID from previous request',
 288                         'captchaword' => 'Answer to the CAPTCHA',
 289                         'md5' => array( 'The MD5 hash of the text parameter, or the prependtext and appendtext parameters concatenated.',
 290                                         'If set, the edit won\'t be done unless the hash is correct'),
 291                         'prependtext' => array( 'Add this text to the beginning of the page. Overrides text.',
 292                                                 'Don\'t use together with section: that won\'t do what you expect.'),
 293                         'appendtext' => 'Add this text to the end of the page. Overrides text',
 294                 );
 295         }
 296
 297         protected function getExamples() {
 298                 return array (
 299                         "Edit a page (anonymous user):",
 300                         "    api.php?action=edit&title=Test&summary=test%20summary&text=article%20content&basetimestamp=20070824123454&token=%2B\\"
 301                 );
 302         }
 303
 304         public function getVersion() {
 305                 return __CLASS__ . ': $Id$';
 306         }
 307 }