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| 1 | <?php |
| 2 | /** |
| 3 | * Page history |
| 4 | * |
| 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. |
| 9 | * |
| 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. |
| 14 | * |
| 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 |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup Actions |
| 22 | */ |
| 23 | |
| 24 | use MediaWiki\Feed\AtomFeed; |
| 25 | use MediaWiki\Feed\FeedItem; |
| 26 | use MediaWiki\Feed\FeedUtils; |
| 27 | use MediaWiki\Feed\RSSFeed; |
| 28 | use MediaWiki\Html\Html; |
| 29 | use MediaWiki\MainConfigNames; |
| 30 | use MediaWiki\MediaWikiServices; |
| 31 | use MediaWiki\Pager\HistoryPager; |
| 32 | use MediaWiki\Request\WebRequest; |
| 33 | use MediaWiki\SpecialPage\SpecialPage; |
| 34 | use MediaWiki\Utils\MWTimestamp; |
| 35 | use Wikimedia\Rdbms\FakeResultWrapper; |
| 36 | use Wikimedia\Rdbms\IResultWrapper; |
| 37 | |
| 38 | /** |
| 39 | * This class handles printing the history page for an article. In order to |
| 40 | * be efficient, it uses timestamps rather than offsets for paging, to avoid |
| 41 | * costly LIMIT,offset queries. |
| 42 | * |
| 43 | * Construct it by passing in an Article, and call $h->history() to print the |
| 44 | * history. |
| 45 | * |
| 46 | * @ingroup Actions |
| 47 | */ |
| 48 | class HistoryAction extends FormlessAction { |
| 49 | private const DIR_PREV = 0; |
| 50 | private const DIR_NEXT = 1; |
| 51 | |
| 52 | /** @var array Array of message keys and strings */ |
| 53 | public $message; |
| 54 | |
| 55 | public function getName() { |
| 56 | return 'history'; |
| 57 | } |
| 58 | |
| 59 | public function requiresWrite() { |
| 60 | return false; |
| 61 | } |
| 62 | |
| 63 | public function requiresUnblock() { |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | protected function getPageTitle() { |
| 68 | return $this->msg( 'history-title' )->plaintextParams( $this->getTitle()->getPrefixedText() ); |
| 69 | } |
| 70 | |
| 71 | protected function getDescription() { |
| 72 | // Creation of a subtitle link pointing to [[Special:Log]] |
| 73 | $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer(); |
| 74 | $subtitle = $linkRenderer->makeKnownLink( |
| 75 | SpecialPage::getTitleFor( 'Log' ), |
| 76 | $this->msg( 'viewpagelogs' )->text(), |
| 77 | [], |
| 78 | [ 'page' => $this->getTitle()->getPrefixedText() ] |
| 79 | ); |
| 80 | |
| 81 | $links = []; |
| 82 | // Allow extensions to add more links |
| 83 | $this->getHookRunner()->onHistoryPageToolLinks( $this->getContext(), $linkRenderer, $links ); |
| 84 | if ( $links ) { |
| 85 | $subtitle .= '' |
| 86 | . $this->msg( 'word-separator' )->escaped() |
| 87 | . $this->msg( 'parentheses' ) |
| 88 | ->rawParams( $this->getLanguage()->pipeList( $links ) ) |
| 89 | ->escaped(); |
| 90 | } |
| 91 | return Html::rawElement( 'div', [ 'class' => 'mw-history-subtitle' ], $subtitle ); |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * As we use the same small set of messages in various methods and that |
| 96 | * they are called often, we call them once and save them in $this->message |
| 97 | */ |
| 98 | private function preCacheMessages() { |
| 99 | // Precache various messages |
| 100 | if ( !isset( $this->message ) ) { |
| 101 | $this->message = []; |
| 102 | $msgs = [ |
| 103 | 'cur', 'tooltip-cur', 'last', 'tooltip-last', 'pipe-separator', |
| 104 | 'changeslist-nocomment', 'updatedmarker', |
| 105 | ]; |
| 106 | foreach ( $msgs as $msg ) { |
| 107 | $this->message[$msg] = $this->msg( $msg )->escaped(); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * @param WebRequest $request |
| 114 | * @return string |
| 115 | */ |
| 116 | private function getTimestampFromRequest( WebRequest $request ) { |
| 117 | // Backwards compatibility checks for URIs with only year and/or month. |
| 118 | $year = $request->getInt( 'year' ); |
| 119 | $month = $request->getInt( 'month' ); |
| 120 | $day = null; |
| 121 | if ( $year !== 0 || $month !== 0 ) { |
| 122 | if ( $year === 0 ) { |
| 123 | $year = MWTimestamp::getLocalInstance()->format( 'Y' ); |
| 124 | } |
| 125 | if ( $month < 1 || $month > 12 ) { |
| 126 | // month is invalid so treat as December (all months) |
| 127 | $month = 12; |
| 128 | } |
| 129 | // month is valid so check day |
| 130 | $day = cal_days_in_month( CAL_GREGORIAN, $month, $year ); |
| 131 | |
| 132 | // Left pad the months and days |
| 133 | $month = str_pad( (string)$month, 2, "0", STR_PAD_LEFT ); |
| 134 | $day = str_pad( (string)$day, 2, "0", STR_PAD_LEFT ); |
| 135 | } |
| 136 | |
| 137 | $before = $request->getVal( 'date-range-to' ); |
| 138 | if ( $before ) { |
| 139 | $parts = explode( '-', $before ); |
| 140 | $year = $parts[0]; |
| 141 | // check date input is valid |
| 142 | if ( count( $parts ) === 3 ) { |
| 143 | $month = $parts[1]; |
| 144 | $day = $parts[2]; |
| 145 | } |
| 146 | } |
| 147 | return $year && $month && $day ? $year . '-' . $month . '-' . $day : ''; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Print the history page for an article. |
| 152 | * @return string|null |
| 153 | */ |
| 154 | public function onView() { |
| 155 | $out = $this->getOutput(); |
| 156 | $request = $this->getRequest(); |
| 157 | $config = $this->context->getConfig(); |
| 158 | $services = MediaWikiServices::getInstance(); |
| 159 | |
| 160 | // Allow client-side HTTP caching of the history page. |
| 161 | // But, always ignore this cache if the (logged-in) user has this page on their watchlist |
| 162 | // and has one or more unseen revisions. Otherwise, we might be showing stale update markers. |
| 163 | // The Last-Modified for the history page does not change when user's markers are cleared, |
| 164 | // so going from "some unseen" to "all seen" would not clear the cache. |
| 165 | // But, when all of the revisions are marked as seen, then only way for new unseen revision |
| 166 | // markers to appear, is for the page to be edited, which updates page_touched/Last-Modified. |
| 167 | $watchlistManager = $services->getWatchlistManager(); |
| 168 | $hasUnseenRevisionMarkers = $config->get( MainConfigNames::ShowUpdatedMarker ) && |
| 169 | $watchlistManager->getTitleNotificationTimestamp( |
| 170 | $this->getUser(), |
| 171 | $this->getTitle() |
| 172 | ); |
| 173 | if ( |
| 174 | !$hasUnseenRevisionMarkers && |
| 175 | $out->checkLastModified( $this->getWikiPage()->getTouched() ) |
| 176 | ) { |
| 177 | return null; // Client cache fresh and headers sent, nothing more to do. |
| 178 | } |
| 179 | |
| 180 | $this->preCacheMessages(); |
| 181 | |
| 182 | # Fill in the file cache if not set already |
| 183 | if ( HTMLFileCache::useFileCache( $this->getContext() ) ) { |
| 184 | $cache = new HTMLFileCache( $this->getTitle(), 'history' ); |
| 185 | if ( !$cache->isCacheGood( /* Assume up to date */ ) ) { |
| 186 | ob_start( [ &$cache, 'saveToFileCache' ] ); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | // Setup page variables. |
| 191 | $out->setFeedAppendQuery( 'action=history' ); |
| 192 | $out->addModules( 'mediawiki.action.history' ); |
| 193 | $out->addModuleStyles( [ |
| 194 | 'mediawiki.interface.helpers.styles', |
| 195 | 'codex-search-styles', |
| 196 | 'mediawiki.action.history.styles', |
| 197 | 'mediawiki.special.changeslist', |
| 198 | ] ); |
| 199 | |
| 200 | // Handle atom/RSS feeds. |
| 201 | $feedType = $request->getRawVal( 'feed' ); |
| 202 | if ( $feedType !== null ) { |
| 203 | $this->feed( $feedType ); |
| 204 | return null; |
| 205 | } |
| 206 | |
| 207 | $this->addHelpLink( |
| 208 | 'https://meta.wikimedia.org/wiki/Special:MyLanguage/Help:Page_history', |
| 209 | true |
| 210 | ); |
| 211 | |
| 212 | // Fail nicely if article doesn't exist. |
| 213 | if ( !$this->getWikiPage()->exists() ) { |
| 214 | $send404Code = $config->get( MainConfigNames::Send404Code ); |
| 215 | if ( $send404Code ) { |
| 216 | $out->setStatusCode( 404 ); |
| 217 | } |
| 218 | $out->addWikiMsg( 'nohistory' ); |
| 219 | |
| 220 | $dbr = $services->getConnectionProvider()->getReplicaDatabase(); |
| 221 | |
| 222 | # show deletion/move log if there is an entry |
| 223 | LogEventsList::showLogExtract( |
| 224 | $out, |
| 225 | [ 'delete', 'move', 'protect' ], |
| 226 | $this->getTitle(), |
| 227 | '', |
| 228 | [ 'lim' => 10, |
| 229 | 'conds' => [ $dbr->expr( 'log_action', '!=', 'revision' ) ], |
| 230 | 'showIfEmpty' => false, |
| 231 | 'msgKey' => [ 'moveddeleted-notice' ] |
| 232 | ] |
| 233 | ); |
| 234 | |
| 235 | return null; |
| 236 | } |
| 237 | |
| 238 | $ts = $this->getTimestampFromRequest( $request ); |
| 239 | $tagFilter = $request->getVal( 'tagfilter' ); |
| 240 | |
| 241 | /** |
| 242 | * Option to show only revisions that have been (partially) hidden via RevisionDelete |
| 243 | */ |
| 244 | if ( $request->getBool( 'deleted' ) ) { |
| 245 | $conds = [ 'rev_deleted != 0' ]; |
| 246 | } else { |
| 247 | $conds = []; |
| 248 | } |
| 249 | |
| 250 | // Add the general form. |
| 251 | $fields = [ |
| 252 | 'action' => [ |
| 253 | 'name' => 'action', |
| 254 | 'type' => 'hidden', |
| 255 | 'default' => 'history', |
| 256 | ], |
| 257 | 'date-range-to' => [ |
| 258 | 'type' => 'date', |
| 259 | 'default' => $ts, |
| 260 | 'label' => $this->msg( 'date-range-to' )->text(), |
| 261 | 'name' => 'date-range-to', |
| 262 | ], |
| 263 | 'tagfilter' => [ |
| 264 | 'label-message' => 'tag-filter', |
| 265 | 'type' => 'tagfilter', |
| 266 | 'id' => 'tagfilter', |
| 267 | 'name' => 'tagfilter', |
| 268 | 'value' => $tagFilter, |
| 269 | ], |
| 270 | 'tagInvert' => [ |
| 271 | 'type' => 'check', |
| 272 | 'name' => 'tagInvert', |
| 273 | 'label-message' => 'invert', |
| 274 | 'hide-if' => [ '===', 'tagfilter', '' ], |
| 275 | ], |
| 276 | ]; |
| 277 | if ( $this->getAuthority()->isAllowed( 'deletedhistory' ) ) { |
| 278 | $fields['deleted'] = [ |
| 279 | 'type' => 'check', |
| 280 | 'label' => $this->msg( 'history-show-deleted' )->text(), |
| 281 | 'default' => $request->getBool( 'deleted' ), |
| 282 | 'name' => 'deleted', |
| 283 | ]; |
| 284 | } |
| 285 | |
| 286 | $out->enableOOUI(); |
| 287 | $htmlForm = HTMLForm::factory( 'ooui', $fields, $this->getContext() ); |
| 288 | $htmlForm |
| 289 | ->setMethod( 'get' ) |
| 290 | ->setAction( wfScript() ) |
| 291 | ->setCollapsibleOptions( true ) |
| 292 | ->setId( 'mw-history-searchform' ) |
| 293 | ->setSubmitTextMsg( 'historyaction-submit' ) |
| 294 | ->setWrapperAttributes( [ 'id' => 'mw-history-search' ] ) |
| 295 | ->setWrapperLegendMsg( 'history-fieldset-title' ) |
| 296 | ->prepareForm(); |
| 297 | |
| 298 | $out->addHTML( $htmlForm->getHTML( false ) ); |
| 299 | |
| 300 | $this->getHookRunner()->onPageHistoryBeforeList( |
| 301 | $this->getArticle(), |
| 302 | $this->getContext() |
| 303 | ); |
| 304 | |
| 305 | // Create and output the list. |
| 306 | $dateComponents = explode( '-', $ts ); |
| 307 | if ( count( $dateComponents ) > 1 ) { |
| 308 | $y = (int)$dateComponents[0]; |
| 309 | $m = (int)$dateComponents[1]; |
| 310 | $d = (int)$dateComponents[2]; |
| 311 | } else { |
| 312 | $y = 0; |
| 313 | $m = 0; |
| 314 | $d = 0; |
| 315 | } |
| 316 | $pager = new HistoryPager( |
| 317 | $this, |
| 318 | $y, |
| 319 | $m, |
| 320 | $d, |
| 321 | $tagFilter, |
| 322 | $request->getCheck( 'tagInvert' ), |
| 323 | $conds, |
| 324 | $services->getLinkBatchFactory(), |
| 325 | $watchlistManager, |
| 326 | $services->getCommentFormatter(), |
| 327 | $services->getHookContainer(), |
| 328 | $services->getChangeTagsStore() |
| 329 | ); |
| 330 | $out->addHTML( |
| 331 | $pager->getNavigationBar() . |
| 332 | $pager->getBody() . |
| 333 | $pager->getNavigationBar() |
| 334 | ); |
| 335 | $out->setPreventClickjacking( $pager->getPreventClickjacking() ); |
| 336 | |
| 337 | return null; |
| 338 | } |
| 339 | |
| 340 | /** |
| 341 | * Fetch an array of revisions, specified by a given limit, offset and |
| 342 | * direction. This is now only used by the feeds. It was previously |
| 343 | * used by the main UI but that's now handled by the pager. |
| 344 | * |
| 345 | * @param int $limit The limit number of revisions to get |
| 346 | * @param int $offset |
| 347 | * @param int $direction Either self::DIR_PREV or self::DIR_NEXT |
| 348 | * @return IResultWrapper |
| 349 | */ |
| 350 | private function fetchRevisions( $limit, $offset, $direction ) { |
| 351 | // Fail if article doesn't exist. |
| 352 | if ( !$this->getTitle()->exists() ) { |
| 353 | return new FakeResultWrapper( [] ); |
| 354 | } |
| 355 | |
| 356 | $dbr = MediaWikiServices::getInstance()->getConnectionProvider()->getReplicaDatabase(); |
| 357 | |
| 358 | if ( $direction === self::DIR_PREV ) { |
| 359 | [ $dirs, $oper ] = [ "ASC", ">=" ]; |
| 360 | } else { /* $direction === self::DIR_NEXT */ |
| 361 | [ $dirs, $oper ] = [ "DESC", "<=" ]; |
| 362 | } |
| 363 | |
| 364 | $queryBuilder = MediaWikiServices::getInstance()->getRevisionStore()->newSelectQueryBuilder( $dbr ) |
| 365 | ->joinComment() |
| 366 | ->where( [ 'rev_page' => $this->getWikiPage()->getId() ] ) |
| 367 | ->useIndex( [ 'revision' => 'rev_page_timestamp' ] ) |
| 368 | ->orderBy( [ 'rev_timestamp' ], $dirs ) |
| 369 | ->limit( $limit ); |
| 370 | if ( $offset ) { |
| 371 | $queryBuilder->andWhere( $dbr->expr( 'rev_timestamp', $oper, $dbr->timestamp( $offset ) ) ); |
| 372 | } |
| 373 | |
| 374 | return $queryBuilder->caller( __METHOD__ )->fetchResultSet(); |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Output a subscription feed listing recent edits to this page. |
| 379 | * |
| 380 | * @param string $type Feed type |
| 381 | */ |
| 382 | private function feed( $type ) { |
| 383 | if ( !FeedUtils::checkFeedOutput( $type, $this->getOutput() ) ) { |
| 384 | return; |
| 385 | } |
| 386 | $request = $this->getRequest(); |
| 387 | |
| 388 | $feedClasses = $this->context->getConfig()->get( MainConfigNames::FeedClasses ); |
| 389 | /** @var RSSFeed|AtomFeed $feed */ |
| 390 | $feed = new $feedClasses[$type]( |
| 391 | $this->getTitle()->getPrefixedText() . ' - ' . |
| 392 | $this->msg( 'history-feed-title' )->inContentLanguage()->text(), |
| 393 | $this->msg( 'history-feed-description' )->inContentLanguage()->text(), |
| 394 | $this->getTitle()->getFullURL( 'action=history' ) |
| 395 | ); |
| 396 | |
| 397 | // Get a limit on number of feed entries. Provide a sensible default |
| 398 | // of 10 if none is defined (but limit to $wgFeedLimit max) |
| 399 | $limit = $request->getInt( 'limit', 10 ); |
| 400 | $limit = min( |
| 401 | max( $limit, 1 ), |
| 402 | $this->context->getConfig()->get( MainConfigNames::FeedLimit ) |
| 403 | ); |
| 404 | |
| 405 | $items = $this->fetchRevisions( $limit, 0, self::DIR_NEXT ); |
| 406 | |
| 407 | // Preload comments |
| 408 | $formattedComments = MediaWikiServices::getInstance()->getRowCommentFormatter() |
| 409 | ->formatRows( $items, 'rev_comment' ); |
| 410 | |
| 411 | // Generate feed elements enclosed between header and footer. |
| 412 | $feed->outHeader(); |
| 413 | if ( $items->numRows() ) { |
| 414 | foreach ( $items as $i => $row ) { |
| 415 | $feed->outItem( $this->feedItem( $row, $formattedComments[$i] ) ); |
| 416 | } |
| 417 | } else { |
| 418 | $feed->outItem( $this->feedEmpty() ); |
| 419 | } |
| 420 | $feed->outFooter(); |
| 421 | } |
| 422 | |
| 423 | private function feedEmpty() { |
| 424 | return new FeedItem( |
| 425 | $this->msg( 'nohistory' )->inContentLanguage()->text(), |
| 426 | $this->msg( 'history-feed-empty' )->inContentLanguage()->parseAsBlock(), |
| 427 | $this->getTitle()->getFullURL(), |
| 428 | wfTimestamp( TS_MW ), |
| 429 | '', |
| 430 | $this->getTitle()->getTalkPage()->getFullURL() |
| 431 | ); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Generate a MediaWiki\Feed\FeedItem object from a given revision table row |
| 436 | * Borrows Recent Changes' feed generation functions for formatting; |
| 437 | * includes a diff to the previous revision (if any). |
| 438 | * |
| 439 | * @param stdClass|array $row Database row |
| 440 | * @param string $formattedComment The comment in HTML format |
| 441 | * @return FeedItem |
| 442 | */ |
| 443 | private function feedItem( $row, $formattedComment ) { |
| 444 | $revisionStore = MediaWikiServices::getInstance()->getRevisionStore(); |
| 445 | $rev = $revisionStore->newRevisionFromRow( $row, 0, $this->getTitle() ); |
| 446 | $prevRev = $revisionStore->getPreviousRevision( $rev ); |
| 447 | $revComment = $rev->getComment() === null ? null : $rev->getComment()->text; |
| 448 | $text = FeedUtils::formatDiffRow2( |
| 449 | $this->getTitle(), |
| 450 | $prevRev ? $prevRev->getId() : false, |
| 451 | $rev->getId(), |
| 452 | $rev->getTimestamp(), |
| 453 | $formattedComment |
| 454 | ); |
| 455 | $revUserText = $rev->getUser() ? $rev->getUser()->getName() : ''; |
| 456 | if ( $revComment == '' ) { |
| 457 | $contLang = MediaWikiServices::getInstance()->getContentLanguage(); |
| 458 | $title = $this->msg( 'history-feed-item-nocomment', |
| 459 | $revUserText, |
| 460 | $contLang->timeanddate( $rev->getTimestamp() ), |
| 461 | $contLang->date( $rev->getTimestamp() ), |
| 462 | $contLang->time( $rev->getTimestamp() ) |
| 463 | )->inContentLanguage()->text(); |
| 464 | } else { |
| 465 | $title = $revUserText . |
| 466 | $this->msg( 'colon-separator' )->inContentLanguage()->text() . |
| 467 | FeedItem::stripComment( $revComment ); |
| 468 | } |
| 469 | |
| 470 | return new FeedItem( |
| 471 | $title, |
| 472 | $text, |
| 473 | $this->getTitle()->getFullURL( 'diff=' . $rev->getId() . '&oldid=prev' ), |
| 474 | $rev->getTimestamp(), |
| 475 | $revUserText, |
| 476 | $this->getTitle()->getTalkPage()->getFullURL() |
| 477 | ); |
| 478 | } |
| 479 | } |