00daba94b5250ea96bec09e272dbfe4006ae186f
[lhc/web/wiklou.git] / 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 * see T20654 if you're inspired to fix this.
33 *
34 * @ingroup API
35 */
36 class ApiEditPage extends ApiBase {
37 public function execute() {
38 $this->useTransactionalTimeLimit();
39
40 $user = $this->getUser();
41 $params = $this->extractRequestParams();
42
43 if ( is_null( $params['text'] ) && is_null( $params['appendtext'] ) &&
44 is_null( $params['prependtext'] ) &&
45 $params['undo'] == 0
46 ) {
47 $this->dieUsageMsg( 'missingtext' );
48 }
49
50 $pageObj = $this->getTitleOrPageId( $params );
51 $titleObj = $pageObj->getTitle();
52 $apiResult = $this->getResult();
53
54 if ( $params['redirect'] ) {
55 if ( $params['prependtext'] === null && $params['appendtext'] === null
56 && $params['section'] !== 'new'
57 ) {
58 $this->dieUsage( 'You have attempted to edit using the "redirect"-following'
59 . ' mode, which must be used in conjuction with section=new, prependtext'
60 . ', or appendtext.', 'redirect-appendonly' );
61 }
62 if ( $titleObj->isRedirect() ) {
63 $oldTitle = $titleObj;
64
65 $titles = Revision::newFromTitle( $oldTitle, false, Revision::READ_LATEST )
66 ->getContent( Revision::FOR_THIS_USER, $user )
67 ->getRedirectChain();
68 // array_shift( $titles );
69
70 $redirValues = [];
71
72 /** @var $newTitle Title */
73 foreach ( $titles as $id => $newTitle ) {
74
75 if ( !isset( $titles[$id - 1] ) ) {
76 $titles[$id - 1] = $oldTitle;
77 }
78
79 $redirValues[] = [
80 'from' => $titles[$id - 1]->getPrefixedText(),
81 'to' => $newTitle->getPrefixedText()
82 ];
83
84 $titleObj = $newTitle;
85 }
86
87 ApiResult::setIndexedTagName( $redirValues, 'r' );
88 $apiResult->addValue( null, 'redirects', $redirValues );
89
90 // Since the page changed, update $pageObj
91 $pageObj = WikiPage::factory( $titleObj );
92 }
93 }
94
95 if ( !isset( $params['contentmodel'] ) || $params['contentmodel'] == '' ) {
96 $contentHandler = $pageObj->getContentHandler();
97 } else {
98 $contentHandler = ContentHandler::getForModelID( $params['contentmodel'] );
99 }
100
101 $name = $titleObj->getPrefixedDBkey();
102 $model = $contentHandler->getModelID();
103
104 if ( $params['undo'] > 0 ) {
105 // allow undo via api
106 } elseif ( $contentHandler->supportsDirectApiEditing() === false ) {
107 $this->dieUsage(
108 "Direct editing via API is not supported for content model $model used by $name",
109 'no-direct-editing'
110 );
111 }
112
113 if ( !isset( $params['contentformat'] ) || $params['contentformat'] == '' ) {
114 $params['contentformat'] = $contentHandler->getDefaultFormat();
115 }
116
117 $contentFormat = $params['contentformat'];
118
119 if ( !$contentHandler->isSupportedFormat( $contentFormat ) ) {
120
121 $this->dieUsage( "The requested format $contentFormat is not supported for content model " .
122 " $model used by $name", 'badformat' );
123 }
124
125 if ( $params['createonly'] && $titleObj->exists() ) {
126 $this->dieUsageMsg( 'createonly-exists' );
127 }
128 if ( $params['nocreate'] && !$titleObj->exists() ) {
129 $this->dieUsageMsg( 'nocreate-missing' );
130 }
131
132 // Now let's check whether we're even allowed to do this
133 $errors = $titleObj->getUserPermissionsErrors( 'edit', $user );
134 if ( !$titleObj->exists() ) {
135 $errors = array_merge( $errors, $titleObj->getUserPermissionsErrors( 'create', $user ) );
136 }
137 if ( count( $errors ) ) {
138 if ( is_array( $errors[0] ) ) {
139 switch ( $errors[0][0] ) {
140 case 'blockedtext':
141 $this->dieUsage(
142 'You have been blocked from editing',
143 'blocked',
144 0,
145 [ 'blockinfo' => ApiQueryUserInfo::getBlockInfo( $user->getBlock() ) ]
146 );
147 break;
148 case 'autoblockedtext':
149 $this->dieUsage(
150 'Your IP address has been blocked automatically, because it was used by a blocked user',
151 'autoblocked',
152 0,
153 [ 'blockinfo' => ApiQueryUserInfo::getBlockInfo( $user->getBlock() ) ]
154 );
155 break;
156 default:
157 $this->dieUsageMsg( $errors[0] );
158 }
159 } else {
160 $this->dieUsageMsg( $errors[0] );
161 }
162 }
163
164 $toMD5 = $params['text'];
165 if ( !is_null( $params['appendtext'] ) || !is_null( $params['prependtext'] ) ) {
166 $content = $pageObj->getContent();
167
168 if ( !$content ) {
169 if ( $titleObj->getNamespace() == NS_MEDIAWIKI ) {
170 # If this is a MediaWiki:x message, then load the messages
171 # and return the message value for x.
172 $text = $titleObj->getDefaultMessageText();
173 if ( $text === false ) {
174 $text = '';
175 }
176
177 try {
178 $content = ContentHandler::makeContent( $text, $this->getTitle() );
179 } catch ( MWContentSerializationException $ex ) {
180 $this->dieUsage( $ex->getMessage(), 'parseerror' );
181
182 return;
183 }
184 } else {
185 # Otherwise, make a new empty content.
186 $content = $contentHandler->makeEmptyContent();
187 }
188 }
189
190 // @todo Add support for appending/prepending to the Content interface
191
192 if ( !( $content instanceof TextContent ) ) {
193 $mode = $contentHandler->getModelID();
194 $this->dieUsage( "Can't append to pages using content model $mode", 'appendnotsupported' );
195 }
196
197 if ( !is_null( $params['section'] ) ) {
198 if ( !$contentHandler->supportsSections() ) {
199 $modelName = $contentHandler->getModelID();
200 $this->dieUsage(
201 "Sections are not supported for this content model: $modelName.",
202 'sectionsnotsupported'
203 );
204 }
205
206 if ( $params['section'] == 'new' ) {
207 // DWIM if they're trying to prepend/append to a new section.
208 $content = null;
209 } else {
210 // Process the content for section edits
211 $section = $params['section'];
212 $content = $content->getSection( $section );
213
214 if ( !$content ) {
215 $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
216 }
217 }
218 }
219
220 if ( !$content ) {
221 $text = '';
222 } else {
223 $text = $content->serialize( $contentFormat );
224 }
225
226 $params['text'] = $params['prependtext'] . $text . $params['appendtext'];
227 $toMD5 = $params['prependtext'] . $params['appendtext'];
228 }
229
230 if ( $params['undo'] > 0 ) {
231 if ( $params['undoafter'] > 0 ) {
232 if ( $params['undo'] < $params['undoafter'] ) {
233 list( $params['undo'], $params['undoafter'] ) =
234 [ $params['undoafter'], $params['undo'] ];
235 }
236 $undoafterRev = Revision::newFromId( $params['undoafter'] );
237 }
238 $undoRev = Revision::newFromId( $params['undo'] );
239 if ( is_null( $undoRev ) || $undoRev->isDeleted( Revision::DELETED_TEXT ) ) {
240 $this->dieUsageMsg( [ 'nosuchrevid', $params['undo'] ] );
241 }
242
243 if ( $params['undoafter'] == 0 ) {
244 $undoafterRev = $undoRev->getPrevious();
245 }
246 if ( is_null( $undoafterRev ) || $undoafterRev->isDeleted( Revision::DELETED_TEXT ) ) {
247 $this->dieUsageMsg( [ 'nosuchrevid', $params['undoafter'] ] );
248 }
249
250 if ( $undoRev->getPage() != $pageObj->getId() ) {
251 $this->dieUsageMsg( [ 'revwrongpage', $undoRev->getId(),
252 $titleObj->getPrefixedText() ] );
253 }
254 if ( $undoafterRev->getPage() != $pageObj->getId() ) {
255 $this->dieUsageMsg( [ 'revwrongpage', $undoafterRev->getId(),
256 $titleObj->getPrefixedText() ] );
257 }
258
259 $newContent = $contentHandler->getUndoContent(
260 $pageObj->getRevision(),
261 $undoRev,
262 $undoafterRev
263 );
264
265 if ( !$newContent ) {
266 $this->dieUsageMsg( 'undo-failure' );
267 }
268
269 $params['text'] = $newContent->serialize( $params['contentformat'] );
270
271 // If no summary was given and we only undid one rev,
272 // use an autosummary
273 if ( is_null( $params['summary'] ) &&
274 $titleObj->getNextRevisionID( $undoafterRev->getId() ) == $params['undo']
275 ) {
276 $params['summary'] = wfMessage( 'undo-summary' )
277 ->params( $params['undo'], $undoRev->getUserText() )->inContentLanguage()->text();
278 }
279 }
280
281 // See if the MD5 hash checks out
282 if ( !is_null( $params['md5'] ) && md5( $toMD5 ) !== $params['md5'] ) {
283 $this->dieUsageMsg( 'hashcheckfailed' );
284 }
285
286 // EditPage wants to parse its stuff from a WebRequest
287 // That interface kind of sucks, but it's workable
288 $requestArray = [
289 'wpTextbox1' => $params['text'],
290 'format' => $contentFormat,
291 'model' => $contentHandler->getModelID(),
292 'wpEditToken' => $params['token'],
293 'wpIgnoreBlankSummary' => true,
294 'wpIgnoreBlankArticle' => true,
295 'wpIgnoreSelfRedirect' => true,
296 'bot' => $params['bot'],
297 ];
298
299 if ( !is_null( $params['summary'] ) ) {
300 $requestArray['wpSummary'] = $params['summary'];
301 }
302
303 if ( !is_null( $params['sectiontitle'] ) ) {
304 $requestArray['wpSectionTitle'] = $params['sectiontitle'];
305 }
306
307 // TODO: Pass along information from 'undoafter' as well
308 if ( $params['undo'] > 0 ) {
309 $requestArray['wpUndidRevision'] = $params['undo'];
310 }
311
312 // Watch out for basetimestamp == '' or '0'
313 // It gets treated as NOW, almost certainly causing an edit conflict
314 if ( $params['basetimestamp'] !== null && (bool)$this->getMain()->getVal( 'basetimestamp' ) ) {
315 $requestArray['wpEdittime'] = $params['basetimestamp'];
316 } else {
317 $requestArray['wpEdittime'] = $pageObj->getTimestamp();
318 }
319
320 if ( $params['starttimestamp'] !== null ) {
321 $requestArray['wpStarttime'] = $params['starttimestamp'];
322 } else {
323 $requestArray['wpStarttime'] = wfTimestampNow(); // Fake wpStartime
324 }
325
326 if ( $params['minor'] || ( !$params['notminor'] && $user->getOption( 'minordefault' ) ) ) {
327 $requestArray['wpMinoredit'] = '';
328 }
329
330 if ( $params['recreate'] ) {
331 $requestArray['wpRecreate'] = '';
332 }
333
334 if ( !is_null( $params['section'] ) ) {
335 $section = $params['section'];
336 if ( !preg_match( '/^((T-)?\d+|new)$/', $section ) ) {
337 $this->dieUsage( "The section parameter must be a valid section id or 'new'",
338 'invalidsection' );
339 }
340 $content = $pageObj->getContent();
341 if ( $section !== '0' && $section != 'new'
342 && ( !$content || !$content->getSection( $section ) )
343 ) {
344 $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
345 }
346 $requestArray['wpSection'] = $params['section'];
347 } else {
348 $requestArray['wpSection'] = '';
349 }
350
351 $watch = $this->getWatchlistValue( $params['watchlist'], $titleObj );
352
353 // Deprecated parameters
354 if ( $params['watch'] ) {
355 $watch = true;
356 } elseif ( $params['unwatch'] ) {
357 $watch = false;
358 }
359
360 if ( $watch ) {
361 $requestArray['wpWatchthis'] = '';
362 }
363
364 // Apply change tags
365 if ( count( $params['tags'] ) ) {
366 $tagStatus = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $user );
367 if ( $tagStatus->isOK() ) {
368 $requestArray['wpChangeTags'] = implode( ',', $params['tags'] );
369 } else {
370 $this->dieStatus( $tagStatus );
371 }
372 }
373
374 // Pass through anything else we might have been given, to support extensions
375 // This is kind of a hack but it's the best we can do to make extensions work
376 $requestArray += $this->getRequest()->getValues();
377
378 global $wgTitle, $wgRequest;
379
380 $req = new DerivativeRequest( $this->getRequest(), $requestArray, true );
381
382 // Some functions depend on $wgTitle == $ep->mTitle
383 // TODO: Make them not or check if they still do
384 $wgTitle = $titleObj;
385
386 $articleContext = new RequestContext;
387 $articleContext->setRequest( $req );
388 $articleContext->setWikiPage( $pageObj );
389 $articleContext->setUser( $this->getUser() );
390
391 /** @var $articleObject Article */
392 $articleObject = Article::newFromWikiPage( $pageObj, $articleContext );
393
394 $ep = new EditPage( $articleObject );
395
396 $ep->setApiEditOverride( true );
397 $ep->setContextTitle( $titleObj );
398 $ep->importFormData( $req );
399 $content = $ep->textbox1;
400
401 // Run hooks
402 // Handle APIEditBeforeSave parameters
403 $r = [];
404 // Deprecated in favour of EditFilterMergedContent
405 if ( !Hooks::run( 'APIEditBeforeSave', [ $ep, $content, &$r ], '1.28' ) ) {
406 if ( count( $r ) ) {
407 $r['result'] = 'Failure';
408 $apiResult->addValue( null, $this->getModuleName(), $r );
409
410 return;
411 }
412
413 $this->dieUsageMsg( 'hookaborted' );
414 }
415
416 // Do the actual save
417 $oldRevId = $articleObject->getRevIdFetched();
418 $result = null;
419 // Fake $wgRequest for some hooks inside EditPage
420 // @todo FIXME: This interface SUCKS
421 $oldRequest = $wgRequest;
422 $wgRequest = $req;
423
424 $status = $ep->attemptSave( $result );
425 $wgRequest = $oldRequest;
426
427 switch ( $status->value ) {
428 case EditPage::AS_HOOK_ERROR:
429 case EditPage::AS_HOOK_ERROR_EXPECTED:
430 if ( isset( $status->apiHookResult ) ) {
431 $r = $status->apiHookResult;
432 $r['result'] = 'Failure';
433 $apiResult->addValue( null, $this->getModuleName(), $r );
434 return;
435 } else {
436 $this->dieUsageMsg( 'hookaborted' );
437 }
438
439 case EditPage::AS_PARSE_ERROR:
440 $this->dieUsage( $status->getMessage(), 'parseerror' );
441
442 case EditPage::AS_IMAGE_REDIRECT_ANON:
443 $this->dieUsageMsg( 'noimageredirect-anon' );
444
445 case EditPage::AS_IMAGE_REDIRECT_LOGGED:
446 $this->dieUsageMsg( 'noimageredirect-logged' );
447
448 case EditPage::AS_SPAM_ERROR:
449 $this->dieUsageMsg( [ 'spamdetected', $result['spam'] ] );
450
451 case EditPage::AS_BLOCKED_PAGE_FOR_USER:
452 $this->dieUsage(
453 'You have been blocked from editing',
454 'blocked',
455 0,
456 [ 'blockinfo' => ApiQueryUserInfo::getBlockInfo( $user->getBlock() ) ]
457 );
458
459 case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
460 case EditPage::AS_CONTENT_TOO_BIG:
461 $this->dieUsageMsg( [ 'contenttoobig', $this->getConfig()->get( 'MaxArticleSize' ) ] );
462
463 case EditPage::AS_READ_ONLY_PAGE_ANON:
464 $this->dieUsageMsg( 'noedit-anon' );
465
466 case EditPage::AS_READ_ONLY_PAGE_LOGGED:
467 $this->dieUsageMsg( 'noedit' );
468
469 case EditPage::AS_READ_ONLY_PAGE:
470 $this->dieReadOnly();
471
472 case EditPage::AS_RATE_LIMITED:
473 $this->dieUsageMsg( 'actionthrottledtext' );
474
475 case EditPage::AS_ARTICLE_WAS_DELETED:
476 $this->dieUsageMsg( 'wasdeleted' );
477
478 case EditPage::AS_NO_CREATE_PERMISSION:
479 $this->dieUsageMsg( 'nocreate-loggedin' );
480
481 case EditPage::AS_NO_CHANGE_CONTENT_MODEL:
482 $this->dieUsageMsg( 'cantchangecontentmodel' );
483
484 case EditPage::AS_BLANK_ARTICLE:
485 $this->dieUsageMsg( 'blankpage' );
486
487 case EditPage::AS_CONFLICT_DETECTED:
488 $this->dieUsageMsg( 'editconflict' );
489
490 case EditPage::AS_TEXTBOX_EMPTY:
491 $this->dieUsageMsg( 'emptynewsection' );
492
493 case EditPage::AS_CHANGE_TAG_ERROR:
494 $this->dieStatus( $status );
495
496 case EditPage::AS_SUCCESS_NEW_ARTICLE:
497 $r['new'] = true;
498 // fall-through
499
500 case EditPage::AS_SUCCESS_UPDATE:
501 $r['result'] = 'Success';
502 $r['pageid'] = intval( $titleObj->getArticleID() );
503 $r['title'] = $titleObj->getPrefixedText();
504 $r['contentmodel'] = $articleObject->getContentModel();
505 $newRevId = $articleObject->getLatest();
506 if ( $newRevId == $oldRevId ) {
507 $r['nochange'] = true;
508 } else {
509 $r['oldrevid'] = intval( $oldRevId );
510 $r['newrevid'] = intval( $newRevId );
511 $r['newtimestamp'] = wfTimestamp( TS_ISO_8601,
512 $pageObj->getTimestamp() );
513 }
514 break;
515
516 case EditPage::AS_SUMMARY_NEEDED:
517 // Shouldn't happen since we set wpIgnoreBlankSummary, but just in case
518 $this->dieUsageMsg( 'summaryrequired' );
519
520 case EditPage::AS_END:
521 default:
522 // $status came from WikiPage::doEdit()
523 $errors = $status->getErrorsArray();
524 $this->dieUsageMsg( $errors[0] ); // TODO: Add new errors to message map
525 break;
526 }
527 $apiResult->addValue( null, $this->getModuleName(), $r );
528 }
529
530 public function mustBePosted() {
531 return true;
532 }
533
534 public function isWriteMode() {
535 return true;
536 }
537
538 public function getAllowedParams() {
539 return [
540 'title' => [
541 ApiBase::PARAM_TYPE => 'string',
542 ],
543 'pageid' => [
544 ApiBase::PARAM_TYPE => 'integer',
545 ],
546 'section' => null,
547 'sectiontitle' => [
548 ApiBase::PARAM_TYPE => 'string',
549 ],
550 'text' => [
551 ApiBase::PARAM_TYPE => 'text',
552 ],
553 'summary' => null,
554 'tags' => [
555 ApiBase::PARAM_TYPE => 'tags',
556 ApiBase::PARAM_ISMULTI => true,
557 ],
558 'minor' => false,
559 'notminor' => false,
560 'bot' => false,
561 'basetimestamp' => [
562 ApiBase::PARAM_TYPE => 'timestamp',
563 ],
564 'starttimestamp' => [
565 ApiBase::PARAM_TYPE => 'timestamp',
566 ],
567 'recreate' => false,
568 'createonly' => false,
569 'nocreate' => false,
570 'watch' => [
571 ApiBase::PARAM_DFLT => false,
572 ApiBase::PARAM_DEPRECATED => true,
573 ],
574 'unwatch' => [
575 ApiBase::PARAM_DFLT => false,
576 ApiBase::PARAM_DEPRECATED => true,
577 ],
578 'watchlist' => [
579 ApiBase::PARAM_DFLT => 'preferences',
580 ApiBase::PARAM_TYPE => [
581 'watch',
582 'unwatch',
583 'preferences',
584 'nochange'
585 ],
586 ],
587 'md5' => null,
588 'prependtext' => [
589 ApiBase::PARAM_TYPE => 'text',
590 ],
591 'appendtext' => [
592 ApiBase::PARAM_TYPE => 'text',
593 ],
594 'undo' => [
595 ApiBase::PARAM_TYPE => 'integer'
596 ],
597 'undoafter' => [
598 ApiBase::PARAM_TYPE => 'integer'
599 ],
600 'redirect' => [
601 ApiBase::PARAM_TYPE => 'boolean',
602 ApiBase::PARAM_DFLT => false,
603 ],
604 'contentformat' => [
605 ApiBase::PARAM_TYPE => ContentHandler::getAllContentFormats(),
606 ],
607 'contentmodel' => [
608 ApiBase::PARAM_TYPE => ContentHandler::getContentModels(),
609 ],
610 'token' => [
611 // Standard definition automatically inserted
612 ApiBase::PARAM_HELP_MSG_APPEND => [ 'apihelp-edit-param-token' ],
613 ],
614 ];
615 }
616
617 public function needsToken() {
618 return 'csrf';
619 }
620
621 protected function getExamplesMessages() {
622 return [
623 'action=edit&title=Test&summary=test%20summary&' .
624 'text=article%20content&basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
625 => 'apihelp-edit-example-edit',
626 'action=edit&title=Test&summary=NOTOC&minor=&' .
627 'prependtext=__NOTOC__%0A&basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
628 => 'apihelp-edit-example-prepend',
629 'action=edit&title=Test&undo=13585&undoafter=13579&' .
630 'basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
631 => 'apihelp-edit-example-undo',
632 ];
633 }
634
635 public function getHelpUrls() {
636 return 'https://www.mediawiki.org/wiki/API:Edit';
637 }
638 }