3 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
23 use MediaWiki\MediaWikiServices
;
24 use MediaWiki\Revision\RevisionRecord
;
25 use MediaWiki\Storage\NameTableAccessException
;
28 * A query action to enumerate revisions of a given page, or show top revisions
29 * of multiple pages. Various pieces of information may be shown - flags,
30 * comments, and the actual wiki markup of the rev. In the enumeration mode,
31 * ranges of revisions may be requested and filtered.
35 class ApiQueryRevisions
extends ApiQueryRevisionsBase
{
37 private $token = null;
39 public function __construct( ApiQuery
$query, $moduleName ) {
40 parent
::__construct( $query, $moduleName, 'rv' );
43 private $tokenFunctions;
45 /** @deprecated since 1.24 */
46 protected function getTokenFunctions() {
47 // tokenname => function
48 // function prototype is func($pageid, $title, $rev)
49 // should return token or false
51 // Don't call the hooks twice
52 if ( isset( $this->tokenFunctions
) ) {
53 return $this->tokenFunctions
;
56 // If we're in a mode that breaks the same-origin policy, no tokens can
58 if ( $this->lacksSameOriginSecurity() ) {
62 $this->tokenFunctions
= [
63 'rollback' => [ self
::class, 'getRollbackToken' ]
65 Hooks
::run( 'APIQueryRevisionsTokens', [ &$this->tokenFunctions
] );
67 return $this->tokenFunctions
;
71 * @deprecated since 1.24
74 * @param Revision $rev
77 public static function getRollbackToken( $pageid, $title, $rev ) {
79 if ( !$wgUser->isAllowed( 'rollback' ) ) {
83 return $wgUser->getEditToken( 'rollback' );
86 protected function run( ApiPageSet
$resultPageSet = null ) {
87 global $wgActorTableSchemaMigrationStage;
89 $params = $this->extractRequestParams( false );
90 $revisionStore = MediaWikiServices
::getInstance()->getRevisionStore();
92 // If any of those parameters are used, work in 'enumeration' mode.
93 // Enum mode can only be used when exactly one page is provided.
94 // Enumerating revisions on multiple pages make it extremely
95 // difficult to manage continuations and require additional SQL indexes
96 $enumRevMode = ( $params['user'] !== null ||
$params['excludeuser'] !== null ||
97 $params['limit'] !== null ||
$params['startid'] !== null ||
98 $params['endid'] !== null ||
$params['dir'] === 'newer' ||
99 $params['start'] !== null ||
$params['end'] !== null );
101 $pageSet = $this->getPageSet();
102 $pageCount = $pageSet->getGoodTitleCount();
103 $revCount = $pageSet->getRevisionCount();
105 // Optimization -- nothing to do
106 if ( $revCount === 0 && $pageCount === 0 ) {
110 if ( $revCount > 0 && count( $pageSet->getLiveRevisionIDs() ) === 0 ) {
111 // We're in revisions mode but all given revisions are deleted
115 if ( $revCount > 0 && $enumRevMode ) {
117 [ 'apierror-revisions-nolist', $this->getModulePrefix() ], 'invalidparammix'
121 if ( $pageCount > 1 && $enumRevMode ) {
123 [ 'apierror-revisions-singlepage', $this->getModulePrefix() ], 'invalidparammix'
127 // In non-enum mode, rvlimit can't be directly used. Use the maximum
129 if ( !$enumRevMode ) {
130 $this->setParsedLimit
= false;
131 $params['limit'] = 'max';
134 $db = $this->getDB();
137 $tsField = 'rev_timestamp';
138 $pageField = 'rev_page';
139 if ( $params['user'] !== null &&
140 ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW
)
142 // We're going to want to use the page_actor_timestamp index (on revision_actor_temp)
143 // so use that table's denormalized fields.
144 $idField = 'revactor_rev';
145 $tsField = 'revactor_timestamp';
146 $pageField = 'revactor_page';
149 if ( $resultPageSet === null ) {
150 $this->parseParameters( $params );
151 $this->token
= $params['token'];
153 if ( $this->token
!== null ||
$pageCount > 0 ) {
156 if ( $this->fetchContent
) {
159 if ( $this->fld_user
) {
162 $revQuery = $revisionStore->getQueryInfo( $opts );
164 if ( $idField !== 'rev_id' ) {
165 $aliasFields = [ 'rev_id' => $idField, 'rev_timestamp' => $tsField, 'rev_page' => $pageField ];
166 $revQuery['fields'] = array_merge(
168 array_diff( $revQuery['fields'], array_keys( $aliasFields ) )
172 $this->addTables( $revQuery['tables'] );
173 $this->addFields( $revQuery['fields'] );
174 $this->addJoinConds( $revQuery['joins'] );
176 $this->limit
= $this->getParameter( 'limit' ) ?
: 10;
177 // Always join 'page' so orphaned revisions are filtered out
178 $this->addTables( [ 'revision', 'page' ] );
180 [ 'page' => [ 'INNER JOIN', [ 'page_id = rev_page' ] ] ]
183 'rev_id' => $idField, 'rev_timestamp' => $tsField, 'rev_page' => $pageField
187 if ( $this->fld_tags
) {
188 $this->addTables( 'tag_summary' );
190 [ 'tag_summary' => [ 'LEFT JOIN', [ 'rev_id=ts_rev_id' ] ] ]
192 $this->addFields( 'ts_tags' );
195 if ( $params['tag'] !== null ) {
196 $this->addTables( 'change_tag' );
198 [ 'change_tag' => [ 'INNER JOIN', [ 'rev_id=ct_rev_id' ] ] ]
200 $changeTagDefStore = MediaWikiServices
::getInstance()->getChangeTagDefStore();
202 $this->addWhereFld( 'ct_tag_id', $changeTagDefStore->getId( $params['tag'] ) );
203 } catch ( NameTableAccessException
$exception ) {
205 $this->addWhere( '1=0' );
209 if ( $resultPageSet === null && $this->fetchContent
) {
210 // For each page we will request, the user must have read rights for that page
211 $user = $this->getUser();
212 $status = Status
::newGood();
213 /** @var Title $title */
214 foreach ( $pageSet->getGoodTitles() as $title ) {
215 if ( !$title->userCan( 'read', $user ) ) {
216 $status->fatal( ApiMessage
::create(
217 [ 'apierror-cannotviewtitle', wfEscapeWikiText( $title->getPrefixedText() ) ],
222 if ( !$status->isGood() ) {
223 $this->dieStatus( $status );
227 if ( $enumRevMode ) {
229 // page_timestamp if we don't have rvuser
230 // page_actor_timestamp (on revision_actor_temp) if we have rvuser in READ_NEW mode
231 // page_user_timestamp if we have a logged-in rvuser
232 // page_timestamp or usertext_timestamp if we have an IP rvuser
234 // This is mostly to prevent parameter errors (and optimize SQL?)
235 $this->requireMaxOneParameter( $params, 'startid', 'start' );
236 $this->requireMaxOneParameter( $params, 'endid', 'end' );
237 $this->requireMaxOneParameter( $params, 'user', 'excludeuser' );
239 if ( $params['continue'] !== null ) {
240 $cont = explode( '|', $params['continue'] );
241 $this->dieContinueUsageIf( count( $cont ) != 2 );
242 $op = ( $params['dir'] === 'newer' ?
'>' : '<' );
243 $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
244 $continueId = (int)$cont[1];
245 $this->dieContinueUsageIf( $continueId != $cont[1] );
246 $this->addWhere( "$tsField $op $continueTimestamp OR " .
247 "($tsField = $continueTimestamp AND " .
248 "$idField $op= $continueId)"
252 // Convert startid/endid to timestamps (T163532)
254 if ( $params['startid'] !== null ) {
255 $revids[] = (int)$params['startid'];
257 if ( $params['endid'] !== null ) {
258 $revids[] = (int)$params['endid'];
261 $db = $this->getDB();
262 $sql = $db->unionQueries( [
265 [ 'id' => 'rev_id', 'ts' => 'rev_timestamp' ],
266 [ 'rev_id' => $revids ],
271 [ 'id' => 'ar_rev_id', 'ts' => 'ar_timestamp' ],
272 [ 'ar_rev_id' => $revids ],
276 $res = $db->query( $sql, __METHOD__
);
277 foreach ( $res as $row ) {
278 if ( (int)$row->id
=== (int)$params['startid'] ) {
279 $params['start'] = $row->ts
;
281 if ( (int)$row->id
=== (int)$params['endid'] ) {
282 $params['end'] = $row->ts
;
285 if ( $params['startid'] !== null && $params['start'] === null ) {
286 $p = $this->encodeParamName( 'startid' );
287 $this->dieWithError( [ 'apierror-revisions-badid', $p ], "badid_$p" );
289 if ( $params['endid'] !== null && $params['end'] === null ) {
290 $p = $this->encodeParamName( 'endid' );
291 $this->dieWithError( [ 'apierror-revisions-badid', $p ], "badid_$p" );
294 if ( $params['start'] !== null ) {
295 $op = ( $params['dir'] === 'newer' ?
'>' : '<' );
296 $ts = $db->addQuotes( $db->timestampOrNull( $params['start'] ) );
297 if ( $params['startid'] !== null ) {
298 $this->addWhere( "$tsField $op $ts OR "
299 . "$tsField = $ts AND $idField $op= " . intval( $params['startid'] ) );
301 $this->addWhere( "$tsField $op= $ts" );
304 if ( $params['end'] !== null ) {
305 $op = ( $params['dir'] === 'newer' ?
'<' : '>' ); // Yes, opposite of the above
306 $ts = $db->addQuotes( $db->timestampOrNull( $params['end'] ) );
307 if ( $params['endid'] !== null ) {
308 $this->addWhere( "$tsField $op $ts OR "
309 . "$tsField = $ts AND $idField $op= " . intval( $params['endid'] ) );
311 $this->addWhere( "$tsField $op= $ts" );
315 $this->addTimestampWhereRange( $tsField, $params['dir'],
316 $params['start'], $params['end'] );
319 $sort = ( $params['dir'] === 'newer' ?
'' : 'DESC' );
320 $this->addOption( 'ORDER BY', [ "rev_timestamp $sort", "rev_id $sort" ] );
322 // There is only one ID, use it
323 $ids = array_keys( $pageSet->getGoodTitles() );
324 $this->addWhereFld( $pageField, reset( $ids ) );
326 if ( $params['user'] !== null ) {
327 $actorQuery = ActorMigration
::newMigration()
328 ->getWhere( $db, 'rev_user', User
::newFromName( $params['user'], false ) );
329 $this->addTables( $actorQuery['tables'] );
330 $this->addJoinConds( $actorQuery['joins'] );
331 $this->addWhere( $actorQuery['conds'] );
332 } elseif ( $params['excludeuser'] !== null ) {
333 $actorQuery = ActorMigration
::newMigration()
334 ->getWhere( $db, 'rev_user', User
::newFromName( $params['excludeuser'], false ) );
335 $this->addTables( $actorQuery['tables'] );
336 $this->addJoinConds( $actorQuery['joins'] );
337 $this->addWhere( 'NOT(' . $actorQuery['conds'] . ')' );
339 if ( $params['user'] !== null ||
$params['excludeuser'] !== null ) {
340 // Paranoia: avoid brute force searches (T19342)
341 if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
342 $bitmask = RevisionRecord
::DELETED_USER
;
343 } elseif ( !$this->getUser()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
344 $bitmask = RevisionRecord
::DELETED_USER | RevisionRecord
::DELETED_RESTRICTED
;
349 $this->addWhere( $db->bitAnd( 'rev_deleted', $bitmask ) . " != $bitmask" );
352 } elseif ( $revCount > 0 ) {
353 // Always targets the PRIMARY index
355 $revs = $pageSet->getLiveRevisionIDs();
357 // Get all revision IDs
358 $this->addWhereFld( 'rev_id', array_keys( $revs ) );
360 if ( $params['continue'] !== null ) {
361 $this->addWhere( 'rev_id >= ' . intval( $params['continue'] ) );
363 $this->addOption( 'ORDER BY', 'rev_id' );
364 } elseif ( $pageCount > 0 ) {
365 // Always targets the rev_page_id index
367 $titles = $pageSet->getGoodTitles();
369 // When working in multi-page non-enumeration mode,
370 // limit to the latest revision only
371 $this->addWhere( 'page_latest=rev_id' );
374 $this->addWhereFld( 'page_id', array_keys( $titles ) );
375 // Every time someone relies on equality propagation, god kills a kitten :)
376 $this->addWhereFld( 'rev_page', array_keys( $titles ) );
378 if ( $params['continue'] !== null ) {
379 $cont = explode( '|', $params['continue'] );
380 $this->dieContinueUsageIf( count( $cont ) != 2 );
381 $pageid = intval( $cont[0] );
382 $revid = intval( $cont[1] );
384 "rev_page > $pageid OR " .
385 "(rev_page = $pageid AND " .
389 $this->addOption( 'ORDER BY', [
394 ApiBase
::dieDebug( __METHOD__
, 'param validation?' );
397 $this->addOption( 'LIMIT', $this->limit +
1 );
402 $res = $this->select( __METHOD__
, [], $hookData );
404 foreach ( $res as $row ) {
405 if ( ++
$count > $this->limit
) {
406 // We've reached the one extra which shows that there are
407 // additional pages to be had. Stop here...
408 if ( $enumRevMode ) {
409 $this->setContinueEnumParameter( 'continue',
410 $row->rev_timestamp
. '|' . intval( $row->rev_id
) );
411 } elseif ( $revCount > 0 ) {
412 $this->setContinueEnumParameter( 'continue', intval( $row->rev_id
) );
414 $this->setContinueEnumParameter( 'continue', intval( $row->rev_page
) .
415 '|' . intval( $row->rev_id
) );
420 if ( $resultPageSet !== null ) {
421 $generated[] = $row->rev_id
;
423 $revision = $revisionStore->newRevisionFromRow( $row );
424 $rev = $this->extractRevisionInfo( $revision, $row );
426 if ( $this->token
!== null ) {
427 $title = Title
::newFromLinkTarget( $revision->getPageAsLinkTarget() );
428 $revisionCompat = new Revision( $revision );
429 $tokenFunctions = $this->getTokenFunctions();
430 foreach ( $this->token
as $t ) {
431 $val = call_user_func( $tokenFunctions[$t], $title->getArticleID(), $title, $revisionCompat );
432 if ( $val === false ) {
433 $this->addWarning( [ 'apiwarn-tokennotallowed', $t ] );
435 $rev[$t . 'token'] = $val;
440 $fit = $this->processRow( $row, $rev, $hookData ) &&
441 $this->addPageSubItem( $row->rev_page
, $rev, 'rev' );
443 if ( $enumRevMode ) {
444 $this->setContinueEnumParameter( 'continue',
445 $row->rev_timestamp
. '|' . intval( $row->rev_id
) );
446 } elseif ( $revCount > 0 ) {
447 $this->setContinueEnumParameter( 'continue', intval( $row->rev_id
) );
449 $this->setContinueEnumParameter( 'continue', intval( $row->rev_page
) .
450 '|' . intval( $row->rev_id
) );
457 if ( $resultPageSet !== null ) {
458 $resultPageSet->populateFromRevisionIDs( $generated );
462 public function getCacheMode( $params ) {
463 if ( isset( $params['token'] ) ) {
466 return parent
::getCacheMode( $params );
469 public function getAllowedParams() {
470 $ret = parent
::getAllowedParams() +
[
472 ApiBase
::PARAM_TYPE
=> 'integer',
473 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
476 ApiBase
::PARAM_TYPE
=> 'integer',
477 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
480 ApiBase
::PARAM_TYPE
=> 'timestamp',
481 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
484 ApiBase
::PARAM_TYPE
=> 'timestamp',
485 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
488 ApiBase
::PARAM_DFLT
=> 'older',
489 ApiBase
::PARAM_TYPE
=> [
493 ApiBase
::PARAM_HELP_MSG
=> 'api-help-param-direction',
494 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
497 ApiBase
::PARAM_TYPE
=> 'user',
498 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
501 ApiBase
::PARAM_TYPE
=> 'user',
502 ApiBase
::PARAM_HELP_MSG_INFO
=> [ [ 'singlepageonly' ] ],
506 ApiBase
::PARAM_DEPRECATED
=> true,
507 ApiBase
::PARAM_TYPE
=> array_keys( $this->getTokenFunctions() ),
508 ApiBase
::PARAM_ISMULTI
=> true
511 ApiBase
::PARAM_HELP_MSG
=> 'api-help-param-continue',
515 $ret['limit'][ApiBase
::PARAM_HELP_MSG_INFO
] = [ [ 'singlepageonly' ] ];
520 protected function getExamplesMessages() {
522 'action=query&prop=revisions&titles=API|Main%20Page&' .
523 'rvslots=*&rvprop=timestamp|user|comment|content'
524 => 'apihelp-query+revisions-example-content',
525 'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
526 'rvprop=timestamp|user|comment'
527 => 'apihelp-query+revisions-example-last5',
528 'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
529 'rvprop=timestamp|user|comment&rvdir=newer'
530 => 'apihelp-query+revisions-example-first5',
531 'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
532 'rvprop=timestamp|user|comment&rvdir=newer&rvstart=2006-05-01T00:00:00Z'
533 => 'apihelp-query+revisions-example-first5-after',
534 'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
535 'rvprop=timestamp|user|comment&rvexcludeuser=127.0.0.1'
536 => 'apihelp-query+revisions-example-first5-not-localhost',
537 'action=query&prop=revisions&titles=Main%20Page&rvlimit=5&' .
538 'rvprop=timestamp|user|comment&rvuser=MediaWiki%20default'
539 => 'apihelp-query+revisions-example-first5-user',
543 public function getHelpUrls() {
544 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Revisions';