--- /dev/null
+<?php
+/**
+ * Base representation for a MediaWiki page.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+use MediaWiki\Edit\PreparedEdit;
+use \MediaWiki\Logger\LoggerFactory;
+use \MediaWiki\MediaWikiServices;
+use Wikimedia\Rdbms\FakeResultWrapper;
+use Wikimedia\Rdbms\IDatabase;
+use Wikimedia\Rdbms\DBError;
+use Wikimedia\Rdbms\DBUnexpectedError;
+
+/**
+ * Class representing a MediaWiki article and history.
+ *
+ * Some fields are public only for backwards-compatibility. Use accessors.
+ * In the past, this class was part of Article.php and everything was public.
+ */
+class WikiPage implements Page, IDBAccessObject {
+ // Constants for $mDataLoadedFrom and related
+
+ /**
+ * @var Title
+ */
+ public $mTitle = null;
+
+ /**@{{
+ * @protected
+ */
+ public $mDataLoaded = false; // !< Boolean
+ public $mIsRedirect = false; // !< Boolean
+ public $mLatest = false; // !< Integer (false means "not loaded")
+ /**@}}*/
+
+ /** @var PreparedEdit Map of cache fields (text, parser output, ect) for a proposed/new edit */
+ public $mPreparedEdit = false;
+
+ /**
+ * @var int
+ */
+ protected $mId = null;
+
+ /**
+ * @var int One of the READ_* constants
+ */
+ protected $mDataLoadedFrom = self::READ_NONE;
+
+ /**
+ * @var Title
+ */
+ protected $mRedirectTarget = null;
+
+ /**
+ * @var Revision
+ */
+ protected $mLastRevision = null;
+
+ /**
+ * @var string Timestamp of the current revision or empty string if not loaded
+ */
+ protected $mTimestamp = '';
+
+ /**
+ * @var string
+ */
+ protected $mTouched = '19700101000000';
+
+ /**
+ * @var string
+ */
+ protected $mLinksUpdated = '19700101000000';
+
+ /** @deprecated since 1.29. Added in 1.28 for partial purging, no longer used. */
+ const PURGE_CDN_CACHE = 1;
+ const PURGE_CLUSTER_PCACHE = 2;
+ const PURGE_GLOBAL_PCACHE = 4;
+ const PURGE_ALL = 7;
+
+ /**
+ * Constructor and clear the article
+ * @param Title $title Reference to a Title object.
+ */
+ public function __construct( Title $title ) {
+ $this->mTitle = $title;
+ }
+
+ /**
+ * Makes sure that the mTitle object is cloned
+ * to the newly cloned WikiPage.
+ */
+ public function __clone() {
+ $this->mTitle = clone $this->mTitle;
+ }
+
+ /**
+ * Create a WikiPage object of the appropriate class for the given title.
+ *
+ * @param Title $title
+ *
+ * @throws MWException
+ * @return WikiPage|WikiCategoryPage|WikiFilePage
+ */
+ public static function factory( Title $title ) {
+ $ns = $title->getNamespace();
+
+ if ( $ns == NS_MEDIA ) {
+ throw new MWException( "NS_MEDIA is a virtual namespace; use NS_FILE." );
+ } elseif ( $ns < 0 ) {
+ throw new MWException( "Invalid or virtual namespace $ns given." );
+ }
+
+ $page = null;
+ if ( !Hooks::run( 'WikiPageFactory', [ $title, &$page ] ) ) {
+ return $page;
+ }
+
+ switch ( $ns ) {
+ case NS_FILE:
+ $page = new WikiFilePage( $title );
+ break;
+ case NS_CATEGORY:
+ $page = new WikiCategoryPage( $title );
+ break;
+ default:
+ $page = new WikiPage( $title );
+ }
+
+ return $page;
+ }
+
+ /**
+ * Constructor from a page id
+ *
+ * @param int $id Article ID to load
+ * @param string|int $from One of the following values:
+ * - "fromdb" or WikiPage::READ_NORMAL to select from a replica DB
+ * - "fromdbmaster" or WikiPage::READ_LATEST to select from the master database
+ *
+ * @return WikiPage|null
+ */
+ public static function newFromID( $id, $from = 'fromdb' ) {
+ // page ids are never 0 or negative, see T63166
+ if ( $id < 1 ) {
+ return null;
+ }
+
+ $from = self::convertSelectType( $from );
+ $db = wfGetDB( $from === self::READ_LATEST ? DB_MASTER : DB_REPLICA );
+ $row = $db->selectRow(
+ 'page', self::selectFields(), [ 'page_id' => $id ], __METHOD__ );
+ if ( !$row ) {
+ return null;
+ }
+ return self::newFromRow( $row, $from );
+ }
+
+ /**
+ * Constructor from a database row
+ *
+ * @since 1.20
+ * @param object $row Database row containing at least fields returned by selectFields().
+ * @param string|int $from Source of $data:
+ * - "fromdb" or WikiPage::READ_NORMAL: from a replica DB
+ * - "fromdbmaster" or WikiPage::READ_LATEST: from the master DB
+ * - "forupdate" or WikiPage::READ_LOCKING: from the master DB using SELECT FOR UPDATE
+ * @return WikiPage
+ */
+ public static function newFromRow( $row, $from = 'fromdb' ) {
+ $page = self::factory( Title::newFromRow( $row ) );
+ $page->loadFromRow( $row, $from );
+ return $page;
+ }
+
+ /**
+ * Convert 'fromdb', 'fromdbmaster' and 'forupdate' to READ_* constants.
+ *
+ * @param object|string|int $type
+ * @return mixed
+ */
+ private static function convertSelectType( $type ) {
+ switch ( $type ) {
+ case 'fromdb':
+ return self::READ_NORMAL;
+ case 'fromdbmaster':
+ return self::READ_LATEST;
+ case 'forupdate':
+ return self::READ_LOCKING;
+ default:
+ // It may already be an integer or whatever else
+ return $type;
+ }
+ }
+
+ /**
+ * @todo Move this UI stuff somewhere else
+ *
+ * @see ContentHandler::getActionOverrides
+ * @return array
+ */
+ public function getActionOverrides() {
+ return $this->getContentHandler()->getActionOverrides();
+ }
+
+ /**
+ * Returns the ContentHandler instance to be used to deal with the content of this WikiPage.
+ *
+ * Shorthand for ContentHandler::getForModelID( $this->getContentModel() );
+ *
+ * @return ContentHandler
+ *
+ * @since 1.21
+ */
+ public function getContentHandler() {
+ return ContentHandler::getForModelID( $this->getContentModel() );
+ }
+
+ /**
+ * Get the title object of the article
+ * @return Title Title object of this page
+ */
+ public function getTitle() {
+ return $this->mTitle;
+ }
+
+ /**
+ * Clear the object
+ * @return void
+ */
+ public function clear() {
+ $this->mDataLoaded = false;
+ $this->mDataLoadedFrom = self::READ_NONE;
+
+ $this->clearCacheFields();
+ }
+
+ /**
+ * Clear the object cache fields
+ * @return void
+ */
+ protected function clearCacheFields() {
+ $this->mId = null;
+ $this->mRedirectTarget = null; // Title object if set
+ $this->mLastRevision = null; // Latest revision
+ $this->mTouched = '19700101000000';
+ $this->mLinksUpdated = '19700101000000';
+ $this->mTimestamp = '';
+ $this->mIsRedirect = false;
+ $this->mLatest = false;
+ // T59026: do not clear mPreparedEdit since prepareTextForEdit() already checks
+ // the requested rev ID and content against the cached one for equality. For most
+ // content types, the output should not change during the lifetime of this cache.
+ // Clearing it can cause extra parses on edit for no reason.
+ }
+
+ /**
+ * Clear the mPreparedEdit cache field, as may be needed by mutable content types
+ * @return void
+ * @since 1.23
+ */
+ public function clearPreparedEdit() {
+ $this->mPreparedEdit = false;
+ }
+
+ /**
+ * Return the list of revision fields that should be selected to create
+ * a new page.
+ *
+ * @return array
+ */
+ public static function selectFields() {
+ global $wgContentHandlerUseDB, $wgPageLanguageUseDB;
+
+ $fields = [
+ 'page_id',
+ 'page_namespace',
+ 'page_title',
+ 'page_restrictions',
+ 'page_is_redirect',
+ 'page_is_new',
+ 'page_random',
+ 'page_touched',
+ 'page_links_updated',
+ 'page_latest',
+ 'page_len',
+ ];
+
+ if ( $wgContentHandlerUseDB ) {
+ $fields[] = 'page_content_model';
+ }
+
+ if ( $wgPageLanguageUseDB ) {
+ $fields[] = 'page_lang';
+ }
+
+ return $fields;
+ }
+
+ /**
+ * Fetch a page record with the given conditions
+ * @param IDatabase $dbr
+ * @param array $conditions
+ * @param array $options
+ * @return object|bool Database result resource, or false on failure
+ */
+ protected function pageData( $dbr, $conditions, $options = [] ) {
+ $fields = self::selectFields();
+
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ Hooks::run( 'ArticlePageDataBefore', [ &$wikiPage, &$fields ] );
+
+ $row = $dbr->selectRow( 'page', $fields, $conditions, __METHOD__, $options );
+
+ Hooks::run( 'ArticlePageDataAfter', [ &$wikiPage, &$row ] );
+
+ return $row;
+ }
+
+ /**
+ * Fetch a page record matching the Title object's namespace and title
+ * using a sanitized title string
+ *
+ * @param IDatabase $dbr
+ * @param Title $title
+ * @param array $options
+ * @return object|bool Database result resource, or false on failure
+ */
+ public function pageDataFromTitle( $dbr, $title, $options = [] ) {
+ return $this->pageData( $dbr, [
+ 'page_namespace' => $title->getNamespace(),
+ 'page_title' => $title->getDBkey() ], $options );
+ }
+
+ /**
+ * Fetch a page record matching the requested ID
+ *
+ * @param IDatabase $dbr
+ * @param int $id
+ * @param array $options
+ * @return object|bool Database result resource, or false on failure
+ */
+ public function pageDataFromId( $dbr, $id, $options = [] ) {
+ return $this->pageData( $dbr, [ 'page_id' => $id ], $options );
+ }
+
+ /**
+ * Load the object from a given source by title
+ *
+ * @param object|string|int $from One of the following:
+ * - A DB query result object.
+ * - "fromdb" or WikiPage::READ_NORMAL to get from a replica DB.
+ * - "fromdbmaster" or WikiPage::READ_LATEST to get from the master DB.
+ * - "forupdate" or WikiPage::READ_LOCKING to get from the master DB
+ * using SELECT FOR UPDATE.
+ *
+ * @return void
+ */
+ public function loadPageData( $from = 'fromdb' ) {
+ $from = self::convertSelectType( $from );
+ if ( is_int( $from ) && $from <= $this->mDataLoadedFrom ) {
+ // We already have the data from the correct location, no need to load it twice.
+ return;
+ }
+
+ if ( is_int( $from ) ) {
+ list( $index, $opts ) = DBAccessObjectUtils::getDBOptions( $from );
+ $data = $this->pageDataFromTitle( wfGetDB( $index ), $this->mTitle, $opts );
+ $loadBalancer = MediaWikiServices::getInstance()->getDBLoadBalancer();
+
+ if ( !$data
+ && $index == DB_REPLICA
+ && $loadBalancer->getServerCount() > 1
+ && $loadBalancer->hasOrMadeRecentMasterChanges()
+ ) {
+ $from = self::READ_LATEST;
+ list( $index, $opts ) = DBAccessObjectUtils::getDBOptions( $from );
+ $data = $this->pageDataFromTitle( wfGetDB( $index ), $this->mTitle, $opts );
+ }
+ } else {
+ // No idea from where the caller got this data, assume replica DB.
+ $data = $from;
+ $from = self::READ_NORMAL;
+ }
+
+ $this->loadFromRow( $data, $from );
+ }
+
+ /**
+ * Load the object from a database row
+ *
+ * @since 1.20
+ * @param object|bool $data DB row containing fields returned by selectFields() or false
+ * @param string|int $from One of the following:
+ * - "fromdb" or WikiPage::READ_NORMAL if the data comes from a replica DB
+ * - "fromdbmaster" or WikiPage::READ_LATEST if the data comes from the master DB
+ * - "forupdate" or WikiPage::READ_LOCKING if the data comes from
+ * the master DB using SELECT FOR UPDATE
+ */
+ public function loadFromRow( $data, $from ) {
+ $lc = LinkCache::singleton();
+ $lc->clearLink( $this->mTitle );
+
+ if ( $data ) {
+ $lc->addGoodLinkObjFromRow( $this->mTitle, $data );
+
+ $this->mTitle->loadFromRow( $data );
+
+ // Old-fashioned restrictions
+ $this->mTitle->loadRestrictions( $data->page_restrictions );
+
+ $this->mId = intval( $data->page_id );
+ $this->mTouched = wfTimestamp( TS_MW, $data->page_touched );
+ $this->mLinksUpdated = wfTimestampOrNull( TS_MW, $data->page_links_updated );
+ $this->mIsRedirect = intval( $data->page_is_redirect );
+ $this->mLatest = intval( $data->page_latest );
+ // T39225: $latest may no longer match the cached latest Revision object.
+ // Double-check the ID of any cached latest Revision object for consistency.
+ if ( $this->mLastRevision && $this->mLastRevision->getId() != $this->mLatest ) {
+ $this->mLastRevision = null;
+ $this->mTimestamp = '';
+ }
+ } else {
+ $lc->addBadLinkObj( $this->mTitle );
+
+ $this->mTitle->loadFromRow( false );
+
+ $this->clearCacheFields();
+
+ $this->mId = 0;
+ }
+
+ $this->mDataLoaded = true;
+ $this->mDataLoadedFrom = self::convertSelectType( $from );
+ }
+
+ /**
+ * @return int Page ID
+ */
+ public function getId() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return $this->mId;
+ }
+
+ /**
+ * @return bool Whether or not the page exists in the database
+ */
+ public function exists() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return $this->mId > 0;
+ }
+
+ /**
+ * Check if this page is something we're going to be showing
+ * some sort of sensible content for. If we return false, page
+ * views (plain action=view) will return an HTTP 404 response,
+ * so spiders and robots can know they're following a bad link.
+ *
+ * @return bool
+ */
+ public function hasViewableContent() {
+ return $this->mTitle->isKnown();
+ }
+
+ /**
+ * Tests if the article content represents a redirect
+ *
+ * @return bool
+ */
+ public function isRedirect() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+
+ return (bool)$this->mIsRedirect;
+ }
+
+ /**
+ * Returns the page's content model id (see the CONTENT_MODEL_XXX constants).
+ *
+ * Will use the revisions actual content model if the page exists,
+ * and the page's default if the page doesn't exist yet.
+ *
+ * @return string
+ *
+ * @since 1.21
+ */
+ public function getContentModel() {
+ if ( $this->exists() ) {
+ $cache = ObjectCache::getMainWANInstance();
+
+ return $cache->getWithSetCallback(
+ $cache->makeKey( 'page', 'content-model', $this->getLatest() ),
+ $cache::TTL_MONTH,
+ function () {
+ $rev = $this->getRevision();
+ if ( $rev ) {
+ // Look at the revision's actual content model
+ return $rev->getContentModel();
+ } else {
+ $title = $this->mTitle->getPrefixedDBkey();
+ wfWarn( "Page $title exists but has no (visible) revisions!" );
+ return $this->mTitle->getContentModel();
+ }
+ }
+ );
+ }
+
+ // use the default model for this page
+ return $this->mTitle->getContentModel();
+ }
+
+ /**
+ * Loads page_touched and returns a value indicating if it should be used
+ * @return bool True if this page exists and is not a redirect
+ */
+ public function checkTouched() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return ( $this->mId && !$this->mIsRedirect );
+ }
+
+ /**
+ * Get the page_touched field
+ * @return string Containing GMT timestamp
+ */
+ public function getTouched() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return $this->mTouched;
+ }
+
+ /**
+ * Get the page_links_updated field
+ * @return string|null Containing GMT timestamp
+ */
+ public function getLinksTimestamp() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return $this->mLinksUpdated;
+ }
+
+ /**
+ * Get the page_latest field
+ * @return int The rev_id of current revision
+ */
+ public function getLatest() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return (int)$this->mLatest;
+ }
+
+ /**
+ * Get the Revision object of the oldest revision
+ * @return Revision|null
+ */
+ public function getOldestRevision() {
+ // Try using the replica DB first, then try the master
+ $rev = $this->mTitle->getFirstRevision();
+ if ( !$rev ) {
+ $rev = $this->mTitle->getFirstRevision( Title::GAID_FOR_UPDATE );
+ }
+ return $rev;
+ }
+
+ /**
+ * Loads everything except the text
+ * This isn't necessary for all uses, so it's only done if needed.
+ */
+ protected function loadLastEdit() {
+ if ( $this->mLastRevision !== null ) {
+ return; // already loaded
+ }
+
+ $latest = $this->getLatest();
+ if ( !$latest ) {
+ return; // page doesn't exist or is missing page_latest info
+ }
+
+ if ( $this->mDataLoadedFrom == self::READ_LOCKING ) {
+ // T39225: if session S1 loads the page row FOR UPDATE, the result always
+ // includes the latest changes committed. This is true even within REPEATABLE-READ
+ // transactions, where S1 normally only sees changes committed before the first S1
+ // SELECT. Thus we need S1 to also gets the revision row FOR UPDATE; otherwise, it
+ // may not find it since a page row UPDATE and revision row INSERT by S2 may have
+ // happened after the first S1 SELECT.
+ // https://dev.mysql.com/doc/refman/5.0/en/set-transaction.html#isolevel_repeatable-read
+ $flags = Revision::READ_LOCKING;
+ $revision = Revision::newFromPageId( $this->getId(), $latest, $flags );
+ } elseif ( $this->mDataLoadedFrom == self::READ_LATEST ) {
+ // Bug T93976: if page_latest was loaded from the master, fetch the
+ // revision from there as well, as it may not exist yet on a replica DB.
+ // Also, this keeps the queries in the same REPEATABLE-READ snapshot.
+ $flags = Revision::READ_LATEST;
+ $revision = Revision::newFromPageId( $this->getId(), $latest, $flags );
+ } else {
+ $dbr = wfGetDB( DB_REPLICA );
+ $revision = Revision::newKnownCurrent( $dbr, $this->getId(), $latest );
+ }
+
+ if ( $revision ) { // sanity
+ $this->setLastEdit( $revision );
+ }
+ }
+
+ /**
+ * Set the latest revision
+ * @param Revision $revision
+ */
+ protected function setLastEdit( Revision $revision ) {
+ $this->mLastRevision = $revision;
+ $this->mTimestamp = $revision->getTimestamp();
+ }
+
+ /**
+ * Get the latest revision
+ * @return Revision|null
+ */
+ public function getRevision() {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision;
+ }
+ return null;
+ }
+
+ /**
+ * Get the content of the current revision. No side-effects...
+ *
+ * @param int $audience One of:
+ * Revision::FOR_PUBLIC to be displayed to all users
+ * Revision::FOR_THIS_USER to be displayed to $wgUser
+ * Revision::RAW get the text regardless of permissions
+ * @param User $user User object to check for, only if FOR_THIS_USER is passed
+ * to the $audience parameter
+ * @return Content|null The content of the current revision
+ *
+ * @since 1.21
+ */
+ public function getContent( $audience = Revision::FOR_PUBLIC, User $user = null ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getContent( $audience, $user );
+ }
+ return null;
+ }
+
+ /**
+ * @return string MW timestamp of last article revision
+ */
+ public function getTimestamp() {
+ // Check if the field has been filled by WikiPage::setTimestamp()
+ if ( !$this->mTimestamp ) {
+ $this->loadLastEdit();
+ }
+
+ return wfTimestamp( TS_MW, $this->mTimestamp );
+ }
+
+ /**
+ * Set the page timestamp (use only to avoid DB queries)
+ * @param string $ts MW timestamp of last article revision
+ * @return void
+ */
+ public function setTimestamp( $ts ) {
+ $this->mTimestamp = wfTimestamp( TS_MW, $ts );
+ }
+
+ /**
+ * @param int $audience One of:
+ * Revision::FOR_PUBLIC to be displayed to all users
+ * Revision::FOR_THIS_USER to be displayed to the given user
+ * Revision::RAW get the text regardless of permissions
+ * @param User $user User object to check for, only if FOR_THIS_USER is passed
+ * to the $audience parameter
+ * @return int User ID for the user that made the last article revision
+ */
+ public function getUser( $audience = Revision::FOR_PUBLIC, User $user = null ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getUser( $audience, $user );
+ } else {
+ return -1;
+ }
+ }
+
+ /**
+ * Get the User object of the user who created the page
+ * @param int $audience One of:
+ * Revision::FOR_PUBLIC to be displayed to all users
+ * Revision::FOR_THIS_USER to be displayed to the given user
+ * Revision::RAW get the text regardless of permissions
+ * @param User $user User object to check for, only if FOR_THIS_USER is passed
+ * to the $audience parameter
+ * @return User|null
+ */
+ public function getCreator( $audience = Revision::FOR_PUBLIC, User $user = null ) {
+ $revision = $this->getOldestRevision();
+ if ( $revision ) {
+ $userName = $revision->getUserText( $audience, $user );
+ return User::newFromName( $userName, false );
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * @param int $audience One of:
+ * Revision::FOR_PUBLIC to be displayed to all users
+ * Revision::FOR_THIS_USER to be displayed to the given user
+ * Revision::RAW get the text regardless of permissions
+ * @param User $user User object to check for, only if FOR_THIS_USER is passed
+ * to the $audience parameter
+ * @return string Username of the user that made the last article revision
+ */
+ public function getUserText( $audience = Revision::FOR_PUBLIC, User $user = null ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getUserText( $audience, $user );
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * @param int $audience One of:
+ * Revision::FOR_PUBLIC to be displayed to all users
+ * Revision::FOR_THIS_USER to be displayed to the given user
+ * Revision::RAW get the text regardless of permissions
+ * @param User $user User object to check for, only if FOR_THIS_USER is passed
+ * to the $audience parameter
+ * @return string Comment stored for the last article revision
+ */
+ public function getComment( $audience = Revision::FOR_PUBLIC, User $user = null ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getComment( $audience, $user );
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * Returns true if last revision was marked as "minor edit"
+ *
+ * @return bool Minor edit indicator for the last article revision.
+ */
+ public function getMinorEdit() {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->isMinor();
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Determine whether a page would be suitable for being counted as an
+ * article in the site_stats table based on the title & its content
+ *
+ * @param PreparedEdit|bool $editInfo (false): object returned by prepareTextForEdit(),
+ * if false, the current database state will be used
+ * @return bool
+ */
+ public function isCountable( $editInfo = false ) {
+ global $wgArticleCountMethod;
+
+ if ( !$this->mTitle->isContentPage() ) {
+ return false;
+ }
+
+ if ( $editInfo ) {
+ $content = $editInfo->pstContent;
+ } else {
+ $content = $this->getContent();
+ }
+
+ if ( !$content || $content->isRedirect() ) {
+ return false;
+ }
+
+ $hasLinks = null;
+
+ if ( $wgArticleCountMethod === 'link' ) {
+ // nasty special case to avoid re-parsing to detect links
+
+ if ( $editInfo ) {
+ // ParserOutput::getLinks() is a 2D array of page links, so
+ // to be really correct we would need to recurse in the array
+ // but the main array should only have items in it if there are
+ // links.
+ $hasLinks = (bool)count( $editInfo->output->getLinks() );
+ } else {
+ $hasLinks = (bool)wfGetDB( DB_REPLICA )->selectField( 'pagelinks', 1,
+ [ 'pl_from' => $this->getId() ], __METHOD__ );
+ }
+ }
+
+ return $content->isCountable( $hasLinks );
+ }
+
+ /**
+ * If this page is a redirect, get its target
+ *
+ * The target will be fetched from the redirect table if possible.
+ * If this page doesn't have an entry there, call insertRedirect()
+ * @return Title|null Title object, or null if this page is not a redirect
+ */
+ public function getRedirectTarget() {
+ if ( !$this->mTitle->isRedirect() ) {
+ return null;
+ }
+
+ if ( $this->mRedirectTarget !== null ) {
+ return $this->mRedirectTarget;
+ }
+
+ // Query the redirect table
+ $dbr = wfGetDB( DB_REPLICA );
+ $row = $dbr->selectRow( 'redirect',
+ [ 'rd_namespace', 'rd_title', 'rd_fragment', 'rd_interwiki' ],
+ [ 'rd_from' => $this->getId() ],
+ __METHOD__
+ );
+
+ // rd_fragment and rd_interwiki were added later, populate them if empty
+ if ( $row && !is_null( $row->rd_fragment ) && !is_null( $row->rd_interwiki ) ) {
+ $this->mRedirectTarget = Title::makeTitle(
+ $row->rd_namespace, $row->rd_title,
+ $row->rd_fragment, $row->rd_interwiki
+ );
+ return $this->mRedirectTarget;
+ }
+
+ // This page doesn't have an entry in the redirect table
+ $this->mRedirectTarget = $this->insertRedirect();
+ return $this->mRedirectTarget;
+ }
+
+ /**
+ * Insert an entry for this page into the redirect table if the content is a redirect
+ *
+ * The database update will be deferred via DeferredUpdates
+ *
+ * Don't call this function directly unless you know what you're doing.
+ * @return Title|null Title object or null if not a redirect
+ */
+ public function insertRedirect() {
+ $content = $this->getContent();
+ $retval = $content ? $content->getUltimateRedirectTarget() : null;
+ if ( !$retval ) {
+ return null;
+ }
+
+ // Update the DB post-send if the page has not cached since now
+ $latest = $this->getLatest();
+ DeferredUpdates::addCallableUpdate(
+ function () use ( $retval, $latest ) {
+ $this->insertRedirectEntry( $retval, $latest );
+ },
+ DeferredUpdates::POSTSEND,
+ wfGetDB( DB_MASTER )
+ );
+
+ return $retval;
+ }
+
+ /**
+ * Insert or update the redirect table entry for this page to indicate it redirects to $rt
+ * @param Title $rt Redirect target
+ * @param int|null $oldLatest Prior page_latest for check and set
+ */
+ public function insertRedirectEntry( Title $rt, $oldLatest = null ) {
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->startAtomic( __METHOD__ );
+
+ if ( !$oldLatest || $oldLatest == $this->lockAndGetLatest() ) {
+ $dbw->upsert(
+ 'redirect',
+ [
+ 'rd_from' => $this->getId(),
+ 'rd_namespace' => $rt->getNamespace(),
+ 'rd_title' => $rt->getDBkey(),
+ 'rd_fragment' => $rt->getFragment(),
+ 'rd_interwiki' => $rt->getInterwiki(),
+ ],
+ [ 'rd_from' ],
+ [
+ 'rd_namespace' => $rt->getNamespace(),
+ 'rd_title' => $rt->getDBkey(),
+ 'rd_fragment' => $rt->getFragment(),
+ 'rd_interwiki' => $rt->getInterwiki(),
+ ],
+ __METHOD__
+ );
+ }
+
+ $dbw->endAtomic( __METHOD__ );
+ }
+
+ /**
+ * Get the Title object or URL this page redirects to
+ *
+ * @return bool|Title|string False, Title of in-wiki target, or string with URL
+ */
+ public function followRedirect() {
+ return $this->getRedirectURL( $this->getRedirectTarget() );
+ }
+
+ /**
+ * Get the Title object or URL to use for a redirect. We use Title
+ * objects for same-wiki, non-special redirects and URLs for everything
+ * else.
+ * @param Title $rt Redirect target
+ * @return bool|Title|string False, Title object of local target, or string with URL
+ */
+ public function getRedirectURL( $rt ) {
+ if ( !$rt ) {
+ return false;
+ }
+
+ if ( $rt->isExternal() ) {
+ if ( $rt->isLocal() ) {
+ // Offsite wikis need an HTTP redirect.
+ // This can be hard to reverse and may produce loops,
+ // so they may be disabled in the site configuration.
+ $source = $this->mTitle->getFullURL( 'redirect=no' );
+ return $rt->getFullURL( [ 'rdfrom' => $source ] );
+ } else {
+ // External pages without "local" bit set are not valid
+ // redirect targets
+ return false;
+ }
+ }
+
+ if ( $rt->isSpecialPage() ) {
+ // Gotta handle redirects to special pages differently:
+ // Fill the HTTP response "Location" header and ignore the rest of the page we're on.
+ // Some pages are not valid targets.
+ if ( $rt->isValidRedirectTarget() ) {
+ return $rt->getFullURL();
+ } else {
+ return false;
+ }
+ }
+
+ return $rt;
+ }
+
+ /**
+ * Get a list of users who have edited this article, not including the user who made
+ * the most recent revision, which you can get from $article->getUser() if you want it
+ * @return UserArrayFromResult
+ */
+ public function getContributors() {
+ // @todo FIXME: This is expensive; cache this info somewhere.
+
+ $dbr = wfGetDB( DB_REPLICA );
+
+ if ( $dbr->implicitGroupby() ) {
+ $realNameField = 'user_real_name';
+ } else {
+ $realNameField = 'MIN(user_real_name) AS user_real_name';
+ }
+
+ $tables = [ 'revision', 'user' ];
+
+ $fields = [
+ 'user_id' => 'rev_user',
+ 'user_name' => 'rev_user_text',
+ $realNameField,
+ 'timestamp' => 'MAX(rev_timestamp)',
+ ];
+
+ $conds = [ 'rev_page' => $this->getId() ];
+
+ // The user who made the top revision gets credited as "this page was last edited by
+ // John, based on contributions by Tom, Dick and Harry", so don't include them twice.
+ $user = $this->getUser();
+ if ( $user ) {
+ $conds[] = "rev_user != $user";
+ } else {
+ $conds[] = "rev_user_text != {$dbr->addQuotes( $this->getUserText() )}";
+ }
+
+ // Username hidden?
+ $conds[] = "{$dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER )} = 0";
+
+ $jconds = [
+ 'user' => [ 'LEFT JOIN', 'rev_user = user_id' ],
+ ];
+
+ $options = [
+ 'GROUP BY' => [ 'rev_user', 'rev_user_text' ],
+ 'ORDER BY' => 'timestamp DESC',
+ ];
+
+ $res = $dbr->select( $tables, $fields, $conds, __METHOD__, $options, $jconds );
+ return new UserArrayFromResult( $res );
+ }
+
+ /**
+ * Should the parser cache be used?
+ *
+ * @param ParserOptions $parserOptions ParserOptions to check
+ * @param int $oldId
+ * @return bool
+ */
+ public function shouldCheckParserCache( ParserOptions $parserOptions, $oldId ) {
+ return $parserOptions->getStubThreshold() == 0
+ && $this->exists()
+ && ( $oldId === null || $oldId === 0 || $oldId === $this->getLatest() )
+ && $this->getContentHandler()->isParserCacheSupported();
+ }
+
+ /**
+ * Get a ParserOutput for the given ParserOptions and revision ID.
+ *
+ * The parser cache will be used if possible. Cache misses that result
+ * in parser runs are debounced with PoolCounter.
+ *
+ * @since 1.19
+ * @param ParserOptions $parserOptions ParserOptions to use for the parse operation
+ * @param null|int $oldid Revision ID to get the text from, passing null or 0 will
+ * get the current revision (default value)
+ * @param bool $forceParse Force reindexing, regardless of cache settings
+ * @return bool|ParserOutput ParserOutput or false if the revision was not found
+ */
+ public function getParserOutput(
+ ParserOptions $parserOptions, $oldid = null, $forceParse = false
+ ) {
+ $useParserCache =
+ ( !$forceParse ) && $this->shouldCheckParserCache( $parserOptions, $oldid );
+
+ if ( $useParserCache && !$parserOptions->isSafeToCache() ) {
+ throw new InvalidArgumentException(
+ 'The supplied ParserOptions are not safe to cache. Fix the options or set $forceParse = true.'
+ );
+ }
+
+ wfDebug( __METHOD__ .
+ ': using parser cache: ' . ( $useParserCache ? 'yes' : 'no' ) . "\n" );
+ if ( $parserOptions->getStubThreshold() ) {
+ wfIncrStats( 'pcache.miss.stub' );
+ }
+
+ if ( $useParserCache ) {
+ $parserOutput = MediaWikiServices::getInstance()->getParserCache()
+ ->get( $this, $parserOptions );
+ if ( $parserOutput !== false ) {
+ return $parserOutput;
+ }
+ }
+
+ if ( $oldid === null || $oldid === 0 ) {
+ $oldid = $this->getLatest();
+ }
+
+ $pool = new PoolWorkArticleView( $this, $parserOptions, $oldid, $useParserCache );
+ $pool->execute();
+
+ return $pool->getParserOutput();
+ }
+
+ /**
+ * Do standard deferred updates after page view (existing or missing page)
+ * @param User $user The relevant user
+ * @param int $oldid Revision id being viewed; if not given or 0, latest revision is assumed
+ */
+ public function doViewUpdates( User $user, $oldid = 0 ) {
+ if ( wfReadOnly() ) {
+ return;
+ }
+
+ Hooks::run( 'PageViewUpdates', [ $this, $user ] );
+ // Update newtalk / watchlist notification status
+ try {
+ $user->clearNotification( $this->mTitle, $oldid );
+ } catch ( DBError $e ) {
+ // Avoid outage if the master is not reachable
+ MWExceptionHandler::logException( $e );
+ }
+ }
+
+ /**
+ * Perform the actions of a page purging
+ * @return bool
+ * @note In 1.28 (and only 1.28), this took a $flags parameter that
+ * controlled how much purging was done.
+ */
+ public function doPurge() {
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ if ( !Hooks::run( 'ArticlePurge', [ &$wikiPage ] ) ) {
+ return false;
+ }
+
+ $this->mTitle->invalidateCache();
+
+ // Clear file cache
+ HTMLFileCache::clearFileCache( $this->getTitle() );
+ // Send purge after above page_touched update was committed
+ DeferredUpdates::addUpdate(
+ new CdnCacheUpdate( $this->mTitle->getCdnUrls() ),
+ DeferredUpdates::PRESEND
+ );
+
+ if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+ $messageCache = MessageCache::singleton();
+ $messageCache->updateMessageOverride( $this->mTitle, $this->getContent() );
+ }
+
+ return true;
+ }
+
+ /**
+ * Get the last time a user explicitly purged the page via action=purge
+ *
+ * @return string|bool TS_MW timestamp or false
+ * @since 1.28
+ * @deprecated since 1.29. It will always return false.
+ */
+ public function getLastPurgeTimestamp() {
+ wfDeprecated( __METHOD__, '1.29' );
+ return false;
+ }
+
+ /**
+ * Insert a new empty page record for this article.
+ * This *must* be followed up by creating a revision
+ * and running $this->updateRevisionOn( ... );
+ * or else the record will be left in a funky state.
+ * Best if all done inside a transaction.
+ *
+ * @param IDatabase $dbw
+ * @param int|null $pageId Custom page ID that will be used for the insert statement
+ *
+ * @return bool|int The newly created page_id key; false if the row was not
+ * inserted, e.g. because the title already existed or because the specified
+ * page ID is already in use.
+ */
+ public function insertOn( $dbw, $pageId = null ) {
+ $pageIdForInsert = $pageId ? [ 'page_id' => $pageId ] : [];
+ $dbw->insert(
+ 'page',
+ [
+ 'page_namespace' => $this->mTitle->getNamespace(),
+ 'page_title' => $this->mTitle->getDBkey(),
+ 'page_restrictions' => '',
+ 'page_is_redirect' => 0, // Will set this shortly...
+ 'page_is_new' => 1,
+ 'page_random' => wfRandom(),
+ 'page_touched' => $dbw->timestamp(),
+ 'page_latest' => 0, // Fill this in shortly...
+ 'page_len' => 0, // Fill this in shortly...
+ ] + $pageIdForInsert,
+ __METHOD__,
+ 'IGNORE'
+ );
+
+ if ( $dbw->affectedRows() > 0 ) {
+ $newid = $pageId ? (int)$pageId : $dbw->insertId();
+ $this->mId = $newid;
+ $this->mTitle->resetArticleID( $newid );
+
+ return $newid;
+ } else {
+ return false; // nothing changed
+ }
+ }
+
+ /**
+ * Update the page record to point to a newly saved revision.
+ *
+ * @param IDatabase $dbw
+ * @param Revision $revision For ID number, and text used to set
+ * length and redirect status fields
+ * @param int $lastRevision If given, will not overwrite the page field
+ * when different from the currently set value.
+ * Giving 0 indicates the new page flag should be set on.
+ * @param bool $lastRevIsRedirect If given, will optimize adding and
+ * removing rows in redirect table.
+ * @return bool Success; false if the page row was missing or page_latest changed
+ */
+ public function updateRevisionOn( $dbw, $revision, $lastRevision = null,
+ $lastRevIsRedirect = null
+ ) {
+ global $wgContentHandlerUseDB;
+
+ // Assertion to try to catch T92046
+ if ( (int)$revision->getId() === 0 ) {
+ throw new InvalidArgumentException(
+ __METHOD__ . ': Revision has ID ' . var_export( $revision->getId(), 1 )
+ );
+ }
+
+ $content = $revision->getContent();
+ $len = $content ? $content->getSize() : 0;
+ $rt = $content ? $content->getUltimateRedirectTarget() : null;
+
+ $conditions = [ 'page_id' => $this->getId() ];
+
+ if ( !is_null( $lastRevision ) ) {
+ // An extra check against threads stepping on each other
+ $conditions['page_latest'] = $lastRevision;
+ }
+
+ $row = [ /* SET */
+ 'page_latest' => $revision->getId(),
+ 'page_touched' => $dbw->timestamp( $revision->getTimestamp() ),
+ 'page_is_new' => ( $lastRevision === 0 ) ? 1 : 0,
+ 'page_is_redirect' => $rt !== null ? 1 : 0,
+ 'page_len' => $len,
+ ];
+
+ if ( $wgContentHandlerUseDB ) {
+ $row['page_content_model'] = $revision->getContentModel();
+ }
+
+ $dbw->update( 'page',
+ $row,
+ $conditions,
+ __METHOD__ );
+
+ $result = $dbw->affectedRows() > 0;
+ if ( $result ) {
+ $this->updateRedirectOn( $dbw, $rt, $lastRevIsRedirect );
+ $this->setLastEdit( $revision );
+ $this->mLatest = $revision->getId();
+ $this->mIsRedirect = (bool)$rt;
+ // Update the LinkCache.
+ LinkCache::singleton()->addGoodLinkObj(
+ $this->getId(),
+ $this->mTitle,
+ $len,
+ $this->mIsRedirect,
+ $this->mLatest,
+ $revision->getContentModel()
+ );
+ }
+
+ return $result;
+ }
+
+ /**
+ * Add row to the redirect table if this is a redirect, remove otherwise.
+ *
+ * @param IDatabase $dbw
+ * @param Title $redirectTitle Title object pointing to the redirect target,
+ * or NULL if this is not a redirect
+ * @param null|bool $lastRevIsRedirect If given, will optimize adding and
+ * removing rows in redirect table.
+ * @return bool True on success, false on failure
+ * @private
+ */
+ public function updateRedirectOn( $dbw, $redirectTitle, $lastRevIsRedirect = null ) {
+ // Always update redirects (target link might have changed)
+ // Update/Insert if we don't know if the last revision was a redirect or not
+ // Delete if changing from redirect to non-redirect
+ $isRedirect = !is_null( $redirectTitle );
+
+ if ( !$isRedirect && $lastRevIsRedirect === false ) {
+ return true;
+ }
+
+ if ( $isRedirect ) {
+ $this->insertRedirectEntry( $redirectTitle );
+ } else {
+ // This is not a redirect, remove row from redirect table
+ $where = [ 'rd_from' => $this->getId() ];
+ $dbw->delete( 'redirect', $where, __METHOD__ );
+ }
+
+ if ( $this->getTitle()->getNamespace() == NS_FILE ) {
+ RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $this->getTitle() );
+ }
+
+ return ( $dbw->affectedRows() != 0 );
+ }
+
+ /**
+ * If the given revision is newer than the currently set page_latest,
+ * update the page record. Otherwise, do nothing.
+ *
+ * @deprecated since 1.24, use updateRevisionOn instead
+ *
+ * @param IDatabase $dbw
+ * @param Revision $revision
+ * @return bool
+ */
+ public function updateIfNewerOn( $dbw, $revision ) {
+ $row = $dbw->selectRow(
+ [ 'revision', 'page' ],
+ [ 'rev_id', 'rev_timestamp', 'page_is_redirect' ],
+ [
+ 'page_id' => $this->getId(),
+ 'page_latest=rev_id' ],
+ __METHOD__ );
+
+ if ( $row ) {
+ if ( wfTimestamp( TS_MW, $row->rev_timestamp ) >= $revision->getTimestamp() ) {
+ return false;
+ }
+ $prev = $row->rev_id;
+ $lastRevIsRedirect = (bool)$row->page_is_redirect;
+ } else {
+ // No or missing previous revision; mark the page as new
+ $prev = 0;
+ $lastRevIsRedirect = null;
+ }
+
+ $ret = $this->updateRevisionOn( $dbw, $revision, $prev, $lastRevIsRedirect );
+
+ return $ret;
+ }
+
+ /**
+ * Get the content that needs to be saved in order to undo all revisions
+ * between $undo and $undoafter. Revisions must belong to the same page,
+ * must exist and must not be deleted
+ * @param Revision $undo
+ * @param Revision $undoafter Must be an earlier revision than $undo
+ * @return Content|bool Content on success, false on failure
+ * @since 1.21
+ * Before we had the Content object, this was done in getUndoText
+ */
+ public function getUndoContent( Revision $undo, Revision $undoafter = null ) {
+ $handler = $undo->getContentHandler();
+ return $handler->getUndoContent( $this->getRevision(), $undo, $undoafter );
+ }
+
+ /**
+ * Returns true if this page's content model supports sections.
+ *
+ * @return bool
+ *
+ * @todo The skin should check this and not offer section functionality if
+ * sections are not supported.
+ * @todo The EditPage should check this and not offer section functionality
+ * if sections are not supported.
+ */
+ public function supportsSections() {
+ return $this->getContentHandler()->supportsSections();
+ }
+
+ /**
+ * @param string|int|null|bool $sectionId Section identifier as a number or string
+ * (e.g. 0, 1 or 'T-1'), null/false or an empty string for the whole page
+ * or 'new' for a new section.
+ * @param Content $sectionContent New content of the section.
+ * @param string $sectionTitle New section's subject, only if $section is "new".
+ * @param string $edittime Revision timestamp or null to use the current revision.
+ *
+ * @throws MWException
+ * @return Content|null New complete article content, or null if error.
+ *
+ * @since 1.21
+ * @deprecated since 1.24, use replaceSectionAtRev instead
+ */
+ public function replaceSectionContent(
+ $sectionId, Content $sectionContent, $sectionTitle = '', $edittime = null
+ ) {
+ $baseRevId = null;
+ if ( $edittime && $sectionId !== 'new' ) {
+ $dbr = wfGetDB( DB_REPLICA );
+ $rev = Revision::loadFromTimestamp( $dbr, $this->mTitle, $edittime );
+ // Try the master if this thread may have just added it.
+ // This could be abstracted into a Revision method, but we don't want
+ // to encourage loading of revisions by timestamp.
+ if ( !$rev
+ && wfGetLB()->getServerCount() > 1
+ && wfGetLB()->hasOrMadeRecentMasterChanges()
+ ) {
+ $dbw = wfGetDB( DB_MASTER );
+ $rev = Revision::loadFromTimestamp( $dbw, $this->mTitle, $edittime );
+ }
+ if ( $rev ) {
+ $baseRevId = $rev->getId();
+ }
+ }
+
+ return $this->replaceSectionAtRev( $sectionId, $sectionContent, $sectionTitle, $baseRevId );
+ }
+
+ /**
+ * @param string|int|null|bool $sectionId Section identifier as a number or string
+ * (e.g. 0, 1 or 'T-1'), null/false or an empty string for the whole page
+ * or 'new' for a new section.
+ * @param Content $sectionContent New content of the section.
+ * @param string $sectionTitle New section's subject, only if $section is "new".
+ * @param int|null $baseRevId
+ *
+ * @throws MWException
+ * @return Content|null New complete article content, or null if error.
+ *
+ * @since 1.24
+ */
+ public function replaceSectionAtRev( $sectionId, Content $sectionContent,
+ $sectionTitle = '', $baseRevId = null
+ ) {
+ if ( strval( $sectionId ) === '' ) {
+ // Whole-page edit; let the whole text through
+ $newContent = $sectionContent;
+ } else {
+ if ( !$this->supportsSections() ) {
+ throw new MWException( "sections not supported for content model " .
+ $this->getContentHandler()->getModelID() );
+ }
+
+ // T32711: always use current version when adding a new section
+ if ( is_null( $baseRevId ) || $sectionId === 'new' ) {
+ $oldContent = $this->getContent();
+ } else {
+ $rev = Revision::newFromId( $baseRevId );
+ if ( !$rev ) {
+ wfDebug( __METHOD__ . " asked for bogus section (page: " .
+ $this->getId() . "; section: $sectionId)\n" );
+ return null;
+ }
+
+ $oldContent = $rev->getContent();
+ }
+
+ if ( !$oldContent ) {
+ wfDebug( __METHOD__ . ": no page text\n" );
+ return null;
+ }
+
+ $newContent = $oldContent->replaceSection( $sectionId, $sectionContent, $sectionTitle );
+ }
+
+ return $newContent;
+ }
+
+ /**
+ * Check flags and add EDIT_NEW or EDIT_UPDATE to them as needed.
+ * @param int $flags
+ * @return int Updated $flags
+ */
+ public function checkFlags( $flags ) {
+ if ( !( $flags & EDIT_NEW ) && !( $flags & EDIT_UPDATE ) ) {
+ if ( $this->exists() ) {
+ $flags |= EDIT_UPDATE;
+ } else {
+ $flags |= EDIT_NEW;
+ }
+ }
+
+ return $flags;
+ }
+
+ /**
+ * Change an existing article or create a new article. Updates RC and all necessary caches,
+ * optionally via the deferred update array.
+ *
+ * @param Content $content New content
+ * @param string $summary Edit summary
+ * @param int $flags Bitfield:
+ * EDIT_NEW
+ * Article is known or assumed to be non-existent, create a new one
+ * EDIT_UPDATE
+ * Article is known or assumed to be pre-existing, update it
+ * EDIT_MINOR
+ * Mark this edit minor, if the user is allowed to do so
+ * EDIT_SUPPRESS_RC
+ * Do not log the change in recentchanges
+ * EDIT_FORCE_BOT
+ * Mark the edit a "bot" edit regardless of user rights
+ * EDIT_AUTOSUMMARY
+ * Fill in blank summaries with generated text where possible
+ * EDIT_INTERNAL
+ * Signal that the page retrieve/save cycle happened entirely in this request.
+ *
+ * If neither EDIT_NEW nor EDIT_UPDATE is specified, the status of the
+ * article will be detected. If EDIT_UPDATE is specified and the article
+ * doesn't exist, the function will return an edit-gone-missing error. If
+ * EDIT_NEW is specified and the article does exist, an edit-already-exists
+ * error will be returned. These two conditions are also possible with
+ * auto-detection due to MediaWiki's performance-optimised locking strategy.
+ *
+ * @param bool|int $baseRevId The revision ID this edit was based off, if any.
+ * This is not the parent revision ID, rather the revision ID for older
+ * content used as the source for a rollback, for example.
+ * @param User $user The user doing the edit
+ * @param string $serialFormat Format for storing the content in the
+ * database.
+ * @param array|null $tags Change tags to apply to this edit
+ * Callers are responsible for permission checks
+ * (with ChangeTags::canAddTagsAccompanyingChange)
+ * @param Int $undidRevId Id of revision that was undone or 0
+ *
+ * @throws MWException
+ * @return Status Possible errors:
+ * edit-hook-aborted: The ArticleSave hook aborted the edit but didn't
+ * set the fatal flag of $status.
+ * edit-gone-missing: In update mode, but the article didn't exist.
+ * edit-conflict: In update mode, the article changed unexpectedly.
+ * edit-no-change: Warning that the text was the same as before.
+ * edit-already-exists: In creation mode, but the article already exists.
+ *
+ * Extensions may define additional errors.
+ *
+ * $return->value will contain an associative array with members as follows:
+ * new: Boolean indicating if the function attempted to create a new article.
+ * revision: The revision object for the inserted revision, or null.
+ *
+ * @since 1.21
+ * @throws MWException
+ */
+ public function doEditContent(
+ Content $content, $summary, $flags = 0, $baseRevId = false,
+ User $user = null, $serialFormat = null, $tags = [], $undidRevId = 0
+ ) {
+ global $wgUser, $wgUseAutomaticEditSummaries;
+
+ // Old default parameter for $tags was null
+ if ( $tags === null ) {
+ $tags = [];
+ }
+
+ // Low-level sanity check
+ if ( $this->mTitle->getText() === '' ) {
+ throw new MWException( 'Something is trying to edit an article with an empty title' );
+ }
+ // Make sure the given content type is allowed for this page
+ if ( !$content->getContentHandler()->canBeUsedOn( $this->mTitle ) ) {
+ return Status::newFatal( 'content-not-allowed-here',
+ ContentHandler::getLocalizedName( $content->getModel() ),
+ $this->mTitle->getPrefixedText()
+ );
+ }
+
+ // Load the data from the master database if needed.
+ // The caller may already loaded it from the master or even loaded it using
+ // SELECT FOR UPDATE, so do not override that using clear().
+ $this->loadPageData( 'fromdbmaster' );
+
+ $user = $user ?: $wgUser;
+ $flags = $this->checkFlags( $flags );
+
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ // Trigger pre-save hook (using provided edit summary)
+ $hookStatus = Status::newGood( [] );
+ $hook_args = [ &$wikiPage, &$user, &$content, &$summary,
+ $flags & EDIT_MINOR, null, null, &$flags, &$hookStatus ];
+ // Check if the hook rejected the attempted save
+ if ( !Hooks::run( 'PageContentSave', $hook_args ) ) {
+ if ( $hookStatus->isOK() ) {
+ // Hook returned false but didn't call fatal(); use generic message
+ $hookStatus->fatal( 'edit-hook-aborted' );
+ }
+
+ return $hookStatus;
+ }
+
+ $old_revision = $this->getRevision(); // current revision
+ $old_content = $this->getContent( Revision::RAW ); // current revision's content
+
+ if ( $old_content && $old_content->getModel() !== $content->getModel() ) {
+ $tags[] = 'mw-contentmodelchange';
+ }
+
+ // Provide autosummaries if one is not provided and autosummaries are enabled
+ if ( $wgUseAutomaticEditSummaries && ( $flags & EDIT_AUTOSUMMARY ) && $summary == '' ) {
+ $handler = $content->getContentHandler();
+ $summary = $handler->getAutosummary( $old_content, $content, $flags );
+ }
+
+ // Avoid statsd noise and wasted cycles check the edit stash (T136678)
+ if ( ( $flags & EDIT_INTERNAL ) || ( $flags & EDIT_FORCE_BOT ) ) {
+ $useCache = false;
+ } else {
+ $useCache = true;
+ }
+
+ // Get the pre-save transform content and final parser output
+ $editInfo = $this->prepareContentForEdit( $content, null, $user, $serialFormat, $useCache );
+ $pstContent = $editInfo->pstContent; // Content object
+ $meta = [
+ 'bot' => ( $flags & EDIT_FORCE_BOT ),
+ 'minor' => ( $flags & EDIT_MINOR ) && $user->isAllowed( 'minoredit' ),
+ 'serialized' => $pstContent->serialize( $serialFormat ),
+ 'serialFormat' => $serialFormat,
+ 'baseRevId' => $baseRevId,
+ 'oldRevision' => $old_revision,
+ 'oldContent' => $old_content,
+ 'oldId' => $this->getLatest(),
+ 'oldIsRedirect' => $this->isRedirect(),
+ 'oldCountable' => $this->isCountable(),
+ 'tags' => ( $tags !== null ) ? (array)$tags : [],
+ 'undidRevId' => $undidRevId
+ ];
+
+ // Actually create the revision and create/update the page
+ if ( $flags & EDIT_UPDATE ) {
+ $status = $this->doModify( $pstContent, $flags, $user, $summary, $meta );
+ } else {
+ $status = $this->doCreate( $pstContent, $flags, $user, $summary, $meta );
+ }
+
+ // Promote user to any groups they meet the criteria for
+ DeferredUpdates::addCallableUpdate( function () use ( $user ) {
+ $user->addAutopromoteOnceGroups( 'onEdit' );
+ $user->addAutopromoteOnceGroups( 'onView' ); // b/c
+ } );
+
+ return $status;
+ }
+
+ /**
+ * @param Content $content Pre-save transform content
+ * @param int $flags
+ * @param User $user
+ * @param string $summary
+ * @param array $meta
+ * @return Status
+ * @throws DBUnexpectedError
+ * @throws Exception
+ * @throws FatalError
+ * @throws MWException
+ */
+ private function doModify(
+ Content $content, $flags, User $user, $summary, array $meta
+ ) {
+ global $wgUseRCPatrol;
+
+ // Update article, but only if changed.
+ $status = Status::newGood( [ 'new' => false, 'revision' => null ] );
+
+ // Convenience variables
+ $now = wfTimestampNow();
+ $oldid = $meta['oldId'];
+ /** @var Content|null $oldContent */
+ $oldContent = $meta['oldContent'];
+ $newsize = $content->getSize();
+
+ if ( !$oldid ) {
+ // Article gone missing
+ $status->fatal( 'edit-gone-missing' );
+
+ return $status;
+ } elseif ( !$oldContent ) {
+ // Sanity check for T39225
+ throw new MWException( "Could not find text for current revision {$oldid}." );
+ }
+
+ // @TODO: pass content object?!
+ $revision = new Revision( [
+ 'page' => $this->getId(),
+ 'title' => $this->mTitle, // for determining the default content model
+ 'comment' => $summary,
+ 'minor_edit' => $meta['minor'],
+ 'text' => $meta['serialized'],
+ 'len' => $newsize,
+ 'parent_id' => $oldid,
+ 'user' => $user->getId(),
+ 'user_text' => $user->getName(),
+ 'timestamp' => $now,
+ 'content_model' => $content->getModel(),
+ 'content_format' => $meta['serialFormat'],
+ ] );
+
+ $changed = !$content->equals( $oldContent );
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ if ( $changed ) {
+ $prepStatus = $content->prepareSave( $this, $flags, $oldid, $user );
+ $status->merge( $prepStatus );
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+
+ $dbw->startAtomic( __METHOD__ );
+ // Get the latest page_latest value while locking it.
+ // Do a CAS style check to see if it's the same as when this method
+ // started. If it changed then bail out before touching the DB.
+ $latestNow = $this->lockAndGetLatest();
+ if ( $latestNow != $oldid ) {
+ $dbw->endAtomic( __METHOD__ );
+ // Page updated or deleted in the mean time
+ $status->fatal( 'edit-conflict' );
+
+ return $status;
+ }
+
+ // At this point we are now comitted to returning an OK
+ // status unless some DB query error or other exception comes up.
+ // This way callers don't have to call rollback() if $status is bad
+ // unless they actually try to catch exceptions (which is rare).
+
+ // Save the revision text
+ $revisionId = $revision->insertOn( $dbw );
+ // Update page_latest and friends to reflect the new revision
+ if ( !$this->updateRevisionOn( $dbw, $revision, null, $meta['oldIsRedirect'] ) ) {
+ throw new MWException( "Failed to update page row to use new revision." );
+ }
+
+ Hooks::run( 'NewRevisionFromEditComplete',
+ [ $this, $revision, $meta['baseRevId'], $user ] );
+
+ // Update recentchanges
+ if ( !( $flags & EDIT_SUPPRESS_RC ) ) {
+ // Mark as patrolled if the user can do so
+ $patrolled = $wgUseRCPatrol && !count(
+ $this->mTitle->getUserPermissionsErrors( 'autopatrol', $user ) );
+ // Add RC row to the DB
+ RecentChange::notifyEdit(
+ $now,
+ $this->mTitle,
+ $revision->isMinor(),
+ $user,
+ $summary,
+ $oldid,
+ $this->getTimestamp(),
+ $meta['bot'],
+ '',
+ $oldContent ? $oldContent->getSize() : 0,
+ $newsize,
+ $revisionId,
+ $patrolled,
+ $meta['tags']
+ );
+ }
+
+ $user->incEditCount();
+
+ $dbw->endAtomic( __METHOD__ );
+ $this->mTimestamp = $now;
+ } else {
+ // T34948: revision ID must be set to page {{REVISIONID}} and
+ // related variables correctly. Likewise for {{REVISIONUSER}} (T135261).
+ $revision->setId( $this->getLatest() );
+ $revision->setUserIdAndName(
+ $this->getUser( Revision::RAW ),
+ $this->getUserText( Revision::RAW )
+ );
+ }
+
+ if ( $changed ) {
+ // Return the new revision to the caller
+ $status->value['revision'] = $revision;
+ } else {
+ $status->warning( 'edit-no-change' );
+ // Update page_touched as updateRevisionOn() was not called.
+ // Other cache updates are managed in onArticleEdit() via doEditUpdates().
+ $this->mTitle->invalidateCache( $now );
+ }
+
+ // Do secondary updates once the main changes have been committed...
+ DeferredUpdates::addUpdate(
+ new AtomicSectionUpdate(
+ $dbw,
+ __METHOD__,
+ function () use (
+ $revision, &$user, $content, $summary, &$flags,
+ $changed, $meta, &$status
+ ) {
+ // Update links tables, site stats, etc.
+ $this->doEditUpdates(
+ $revision,
+ $user,
+ [
+ 'changed' => $changed,
+ 'oldcountable' => $meta['oldCountable'],
+ 'oldrevision' => $meta['oldRevision']
+ ]
+ );
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+ // Trigger post-save hook
+ $params = [ &$wikiPage, &$user, $content, $summary, $flags & EDIT_MINOR,
+ null, null, &$flags, $revision, &$status, $meta['baseRevId'],
+ $meta['undidRevId'] ];
+ Hooks::run( 'PageContentSaveComplete', $params );
+ }
+ ),
+ DeferredUpdates::PRESEND
+ );
+
+ return $status;
+ }
+
+ /**
+ * @param Content $content Pre-save transform content
+ * @param int $flags
+ * @param User $user
+ * @param string $summary
+ * @param array $meta
+ * @return Status
+ * @throws DBUnexpectedError
+ * @throws Exception
+ * @throws FatalError
+ * @throws MWException
+ */
+ private function doCreate(
+ Content $content, $flags, User $user, $summary, array $meta
+ ) {
+ global $wgUseRCPatrol, $wgUseNPPatrol;
+
+ $status = Status::newGood( [ 'new' => true, 'revision' => null ] );
+
+ $now = wfTimestampNow();
+ $newsize = $content->getSize();
+ $prepStatus = $content->prepareSave( $this, $flags, $meta['oldId'], $user );
+ $status->merge( $prepStatus );
+ if ( !$status->isOK() ) {
+ return $status;
+ }
+
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->startAtomic( __METHOD__ );
+
+ // Add the page record unless one already exists for the title
+ $newid = $this->insertOn( $dbw );
+ if ( $newid === false ) {
+ $dbw->endAtomic( __METHOD__ ); // nothing inserted
+ $status->fatal( 'edit-already-exists' );
+
+ return $status; // nothing done
+ }
+
+ // At this point we are now comitted to returning an OK
+ // status unless some DB query error or other exception comes up.
+ // This way callers don't have to call rollback() if $status is bad
+ // unless they actually try to catch exceptions (which is rare).
+
+ // @TODO: pass content object?!
+ $revision = new Revision( [
+ 'page' => $newid,
+ 'title' => $this->mTitle, // for determining the default content model
+ 'comment' => $summary,
+ 'minor_edit' => $meta['minor'],
+ 'text' => $meta['serialized'],
+ 'len' => $newsize,
+ 'user' => $user->getId(),
+ 'user_text' => $user->getName(),
+ 'timestamp' => $now,
+ 'content_model' => $content->getModel(),
+ 'content_format' => $meta['serialFormat'],
+ ] );
+
+ // Save the revision text...
+ $revisionId = $revision->insertOn( $dbw );
+ // Update the page record with revision data
+ if ( !$this->updateRevisionOn( $dbw, $revision, 0 ) ) {
+ throw new MWException( "Failed to update page row to use new revision." );
+ }
+
+ Hooks::run( 'NewRevisionFromEditComplete', [ $this, $revision, false, $user ] );
+
+ // Update recentchanges
+ if ( !( $flags & EDIT_SUPPRESS_RC ) ) {
+ // Mark as patrolled if the user can do so
+ $patrolled = ( $wgUseRCPatrol || $wgUseNPPatrol ) &&
+ !count( $this->mTitle->getUserPermissionsErrors( 'autopatrol', $user ) );
+ // Add RC row to the DB
+ RecentChange::notifyNew(
+ $now,
+ $this->mTitle,
+ $revision->isMinor(),
+ $user,
+ $summary,
+ $meta['bot'],
+ '',
+ $newsize,
+ $revisionId,
+ $patrolled,
+ $meta['tags']
+ );
+ }
+
+ $user->incEditCount();
+
+ $dbw->endAtomic( __METHOD__ );
+ $this->mTimestamp = $now;
+
+ // Return the new revision to the caller
+ $status->value['revision'] = $revision;
+
+ // Do secondary updates once the main changes have been committed...
+ DeferredUpdates::addUpdate(
+ new AtomicSectionUpdate(
+ $dbw,
+ __METHOD__,
+ function () use (
+ $revision, &$user, $content, $summary, &$flags, $meta, &$status
+ ) {
+ // Update links, etc.
+ $this->doEditUpdates( $revision, $user, [ 'created' => true ] );
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+ // Trigger post-create hook
+ $params = [ &$wikiPage, &$user, $content, $summary,
+ $flags & EDIT_MINOR, null, null, &$flags, $revision ];
+ Hooks::run( 'PageContentInsertComplete', $params );
+ // Trigger post-save hook
+ $params = array_merge( $params, [ &$status, $meta['baseRevId'], 0 ] );
+ Hooks::run( 'PageContentSaveComplete', $params );
+ }
+ ),
+ DeferredUpdates::PRESEND
+ );
+
+ return $status;
+ }
+
+ /**
+ * Get parser options suitable for rendering the primary article wikitext
+ *
+ * @see ContentHandler::makeParserOptions
+ *
+ * @param IContextSource|User|string $context One of the following:
+ * - IContextSource: Use the User and the Language of the provided
+ * context
+ * - User: Use the provided User object and $wgLang for the language,
+ * so use an IContextSource object if possible.
+ * - 'canonical': Canonical options (anonymous user with default
+ * preferences and content language).
+ * @return ParserOptions
+ */
+ public function makeParserOptions( $context ) {
+ $options = $this->getContentHandler()->makeParserOptions( $context );
+
+ if ( $this->getTitle()->isConversionTable() ) {
+ // @todo ConversionTable should become a separate content model, so
+ // we don't need special cases like this one.
+ $options->disableContentConversion();
+ }
+
+ return $options;
+ }
+
+ /**
+ * Prepare content which is about to be saved.
+ *
+ * Prior to 1.30, this returned a stdClass object with the same class
+ * members.
+ *
+ * @param Content $content
+ * @param Revision|int|null $revision Revision object. For backwards compatibility, a
+ * revision ID is also accepted, but this is deprecated.
+ * @param User|null $user
+ * @param string|null $serialFormat
+ * @param bool $useCache Check shared prepared edit cache
+ *
+ * @return PreparedEdit
+ *
+ * @since 1.21
+ */
+ public function prepareContentForEdit(
+ Content $content, $revision = null, User $user = null,
+ $serialFormat = null, $useCache = true
+ ) {
+ global $wgContLang, $wgUser, $wgAjaxEditStash;
+
+ if ( is_object( $revision ) ) {
+ $revid = $revision->getId();
+ } else {
+ $revid = $revision;
+ // This code path is deprecated, and nothing is known to
+ // use it, so performance here shouldn't be a worry.
+ if ( $revid !== null ) {
+ wfDeprecated( __METHOD__ . ' with $revision = revision ID', '1.25' );
+ $revision = Revision::newFromId( $revid, Revision::READ_LATEST );
+ } else {
+ $revision = null;
+ }
+ }
+
+ $user = is_null( $user ) ? $wgUser : $user;
+ // XXX: check $user->getId() here???
+
+ // Use a sane default for $serialFormat, see T59026
+ if ( $serialFormat === null ) {
+ $serialFormat = $content->getContentHandler()->getDefaultFormat();
+ }
+
+ if ( $this->mPreparedEdit
+ && isset( $this->mPreparedEdit->newContent )
+ && $this->mPreparedEdit->newContent->equals( $content )
+ && $this->mPreparedEdit->revid == $revid
+ && $this->mPreparedEdit->format == $serialFormat
+ // XXX: also check $user here?
+ ) {
+ // Already prepared
+ return $this->mPreparedEdit;
+ }
+
+ // The edit may have already been prepared via api.php?action=stashedit
+ $cachedEdit = $useCache && $wgAjaxEditStash
+ ? ApiStashEdit::checkCache( $this->getTitle(), $content, $user )
+ : false;
+
+ $popts = ParserOptions::newFromUserAndLang( $user, $wgContLang );
+ Hooks::run( 'ArticlePrepareTextForEdit', [ $this, $popts ] );
+
+ $edit = new PreparedEdit();
+ if ( $cachedEdit ) {
+ $edit->timestamp = $cachedEdit->timestamp;
+ } else {
+ $edit->timestamp = wfTimestampNow();
+ }
+ // @note: $cachedEdit is safely not used if the rev ID was referenced in the text
+ $edit->revid = $revid;
+
+ if ( $cachedEdit ) {
+ $edit->pstContent = $cachedEdit->pstContent;
+ } else {
+ $edit->pstContent = $content
+ ? $content->preSaveTransform( $this->mTitle, $user, $popts )
+ : null;
+ }
+
+ $edit->format = $serialFormat;
+ $edit->popts = $this->makeParserOptions( 'canonical' );
+ if ( $cachedEdit ) {
+ $edit->output = $cachedEdit->output;
+ } else {
+ if ( $revision ) {
+ // We get here if vary-revision is set. This means that this page references
+ // itself (such as via self-transclusion). In this case, we need to make sure
+ // that any such self-references refer to the newly-saved revision, and not
+ // to the previous one, which could otherwise happen due to replica DB lag.
+ $oldCallback = $edit->popts->getCurrentRevisionCallback();
+ $edit->popts->setCurrentRevisionCallback(
+ function ( Title $title, $parser = false ) use ( $revision, &$oldCallback ) {
+ if ( $title->equals( $revision->getTitle() ) ) {
+ return $revision;
+ } else {
+ return call_user_func( $oldCallback, $title, $parser );
+ }
+ }
+ );
+ } else {
+ // Try to avoid a second parse if {{REVISIONID}} is used
+ $dbIndex = ( $this->mDataLoadedFrom & self::READ_LATEST ) === self::READ_LATEST
+ ? DB_MASTER // use the best possible guess
+ : DB_REPLICA; // T154554
+
+ $edit->popts->setSpeculativeRevIdCallback( function () use ( $dbIndex ) {
+ return 1 + (int)wfGetDB( $dbIndex )->selectField(
+ 'revision',
+ 'MAX(rev_id)',
+ [],
+ __METHOD__
+ );
+ } );
+ }
+ $edit->output = $edit->pstContent
+ ? $edit->pstContent->getParserOutput( $this->mTitle, $revid, $edit->popts )
+ : null;
+ }
+
+ $edit->newContent = $content;
+ $edit->oldContent = $this->getContent( Revision::RAW );
+
+ // NOTE: B/C for hooks! don't use these fields!
+ $edit->newText = $edit->newContent
+ ? ContentHandler::getContentText( $edit->newContent )
+ : '';
+ $edit->oldText = $edit->oldContent
+ ? ContentHandler::getContentText( $edit->oldContent )
+ : '';
+ $edit->pst = $edit->pstContent ? $edit->pstContent->serialize( $serialFormat ) : '';
+
+ if ( $edit->output ) {
+ $edit->output->setCacheTime( wfTimestampNow() );
+ }
+
+ // Process cache the result
+ $this->mPreparedEdit = $edit;
+
+ return $edit;
+ }
+
+ /**
+ * Do standard deferred updates after page edit.
+ * Update links tables, site stats, search index and message cache.
+ * Purges pages that include this page if the text was changed here.
+ * Every 100th edit, prune the recent changes table.
+ *
+ * @param Revision $revision
+ * @param User $user User object that did the revision
+ * @param array $options Array of options, following indexes are used:
+ * - changed: bool, whether the revision changed the content (default true)
+ * - created: bool, whether the revision created the page (default false)
+ * - moved: bool, whether the page was moved (default false)
+ * - restored: bool, whether the page was undeleted (default false)
+ * - oldrevision: Revision object for the pre-update revision (default null)
+ * - oldcountable: bool, null, or string 'no-change' (default null):
+ * - bool: whether the page was counted as an article before that
+ * revision, only used in changed is true and created is false
+ * - null: if created is false, don't update the article count; if created
+ * is true, do update the article count
+ * - 'no-change': don't update the article count, ever
+ */
+ public function doEditUpdates( Revision $revision, User $user, array $options = [] ) {
+ global $wgRCWatchCategoryMembership;
+
+ $options += [
+ 'changed' => true,
+ 'created' => false,
+ 'moved' => false,
+ 'restored' => false,
+ 'oldrevision' => null,
+ 'oldcountable' => null
+ ];
+ $content = $revision->getContent();
+
+ $logger = LoggerFactory::getInstance( 'SaveParse' );
+
+ // See if the parser output before $revision was inserted is still valid
+ $editInfo = false;
+ if ( !$this->mPreparedEdit ) {
+ $logger->debug( __METHOD__ . ": No prepared edit...\n" );
+ } elseif ( $this->mPreparedEdit->output->getFlag( 'vary-revision' ) ) {
+ $logger->info( __METHOD__ . ": Prepared edit has vary-revision...\n" );
+ } elseif ( $this->mPreparedEdit->output->getFlag( 'vary-revision-id' )
+ && $this->mPreparedEdit->output->getSpeculativeRevIdUsed() !== $revision->getId()
+ ) {
+ $logger->info( __METHOD__ . ": Prepared edit has vary-revision-id with wrong ID...\n" );
+ } elseif ( $this->mPreparedEdit->output->getFlag( 'vary-user' ) && !$options['changed'] ) {
+ $logger->info( __METHOD__ . ": Prepared edit has vary-user and is null...\n" );
+ } else {
+ wfDebug( __METHOD__ . ": Using prepared edit...\n" );
+ $editInfo = $this->mPreparedEdit;
+ }
+
+ if ( !$editInfo ) {
+ // Parse the text again if needed. Be careful not to do pre-save transform twice:
+ // $text is usually already pre-save transformed once. Avoid using the edit stash
+ // as any prepared content from there or in doEditContent() was already rejected.
+ $editInfo = $this->prepareContentForEdit( $content, $revision, $user, null, false );
+ }
+
+ // Save it to the parser cache.
+ // Make sure the cache time matches page_touched to avoid double parsing.
+ MediaWikiServices::getInstance()->getParserCache()->save(
+ $editInfo->output, $this, $editInfo->popts,
+ $revision->getTimestamp(), $editInfo->revid
+ );
+
+ // Update the links tables and other secondary data
+ if ( $content ) {
+ $recursive = $options['changed']; // T52785
+ $updates = $content->getSecondaryDataUpdates(
+ $this->getTitle(), null, $recursive, $editInfo->output
+ );
+ foreach ( $updates as $update ) {
+ if ( $update instanceof LinksUpdate ) {
+ $update->setRevision( $revision );
+ $update->setTriggeringUser( $user );
+ }
+ DeferredUpdates::addUpdate( $update );
+ }
+ if ( $wgRCWatchCategoryMembership
+ && $this->getContentHandler()->supportsCategories() === true
+ && ( $options['changed'] || $options['created'] )
+ && !$options['restored']
+ ) {
+ // Note: jobs are pushed after deferred updates, so the job should be able to see
+ // the recent change entry (also done via deferred updates) and carry over any
+ // bot/deletion/IP flags, ect.
+ JobQueueGroup::singleton()->lazyPush( new CategoryMembershipChangeJob(
+ $this->getTitle(),
+ [
+ 'pageId' => $this->getId(),
+ 'revTimestamp' => $revision->getTimestamp()
+ ]
+ ) );
+ }
+ }
+
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ Hooks::run( 'ArticleEditUpdates', [ &$wikiPage, &$editInfo, $options['changed'] ] );
+
+ if ( Hooks::run( 'ArticleEditUpdatesDeleteFromRecentchanges', [ &$wikiPage ] ) ) {
+ // Flush old entries from the `recentchanges` table
+ if ( mt_rand( 0, 9 ) == 0 ) {
+ JobQueueGroup::singleton()->lazyPush( RecentChangesUpdateJob::newPurgeJob() );
+ }
+ }
+
+ if ( !$this->exists() ) {
+ return;
+ }
+
+ $id = $this->getId();
+ $title = $this->mTitle->getPrefixedDBkey();
+ $shortTitle = $this->mTitle->getDBkey();
+
+ if ( $options['oldcountable'] === 'no-change' ||
+ ( !$options['changed'] && !$options['moved'] )
+ ) {
+ $good = 0;
+ } elseif ( $options['created'] ) {
+ $good = (int)$this->isCountable( $editInfo );
+ } elseif ( $options['oldcountable'] !== null ) {
+ $good = (int)$this->isCountable( $editInfo ) - (int)$options['oldcountable'];
+ } else {
+ $good = 0;
+ }
+ $edits = $options['changed'] ? 1 : 0;
+ $total = $options['created'] ? 1 : 0;
+
+ DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, $edits, $good, $total ) );
+ DeferredUpdates::addUpdate( new SearchUpdate( $id, $title, $content ) );
+
+ // If this is another user's talk page, update newtalk.
+ // Don't do this if $options['changed'] = false (null-edits) nor if
+ // it's a minor edit and the user doesn't want notifications for those.
+ if ( $options['changed']
+ && $this->mTitle->getNamespace() == NS_USER_TALK
+ && $shortTitle != $user->getTitleKey()
+ && !( $revision->isMinor() && $user->isAllowed( 'nominornewtalk' ) )
+ ) {
+ $recipient = User::newFromName( $shortTitle, false );
+ if ( !$recipient ) {
+ wfDebug( __METHOD__ . ": invalid username\n" );
+ } else {
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ // Allow extensions to prevent user notification
+ // when a new message is added to their talk page
+ if ( Hooks::run( 'ArticleEditUpdateNewTalk', [ &$wikiPage, $recipient ] ) ) {
+ if ( User::isIP( $shortTitle ) ) {
+ // An anonymous user
+ $recipient->setNewtalk( true, $revision );
+ } elseif ( $recipient->isLoggedIn() ) {
+ $recipient->setNewtalk( true, $revision );
+ } else {
+ wfDebug( __METHOD__ . ": don't need to notify a nonexistent user\n" );
+ }
+ }
+ }
+ }
+
+ if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+ MessageCache::singleton()->updateMessageOverride( $this->mTitle, $content );
+ }
+
+ if ( $options['created'] ) {
+ self::onArticleCreate( $this->mTitle );
+ } elseif ( $options['changed'] ) { // T52785
+ self::onArticleEdit( $this->mTitle, $revision );
+ }
+
+ ResourceLoaderWikiModule::invalidateModuleCache(
+ $this->mTitle, $options['oldrevision'], $revision, wfWikiID()
+ );
+ }
+
+ /**
+ * Update the article's restriction field, and leave a log entry.
+ * This works for protection both existing and non-existing pages.
+ *
+ * @param array $limit Set of restriction keys
+ * @param array $expiry Per restriction type expiration
+ * @param int &$cascade Set to false if cascading protection isn't allowed.
+ * @param string $reason
+ * @param User $user The user updating the restrictions
+ * @param string|string[] $tags Change tags to add to the pages and protection log entries
+ * ($user should be able to add the specified tags before this is called)
+ * @return Status Status object; if action is taken, $status->value is the log_id of the
+ * protection log entry.
+ */
+ public function doUpdateRestrictions( array $limit, array $expiry,
+ &$cascade, $reason, User $user, $tags = null
+ ) {
+ global $wgCascadingRestrictionLevels;
+
+ if ( wfReadOnly() ) {
+ return Status::newFatal( wfMessage( 'readonlytext', wfReadOnlyReason() ) );
+ }
+
+ $this->loadPageData( 'fromdbmaster' );
+ $restrictionTypes = $this->mTitle->getRestrictionTypes();
+ $id = $this->getId();
+
+ if ( !$cascade ) {
+ $cascade = false;
+ }
+
+ // Take this opportunity to purge out expired restrictions
+ Title::purgeExpiredRestrictions();
+
+ // @todo FIXME: Same limitations as described in ProtectionForm.php (line 37);
+ // we expect a single selection, but the schema allows otherwise.
+ $isProtected = false;
+ $protect = false;
+ $changed = false;
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ foreach ( $restrictionTypes as $action ) {
+ if ( !isset( $expiry[$action] ) || $expiry[$action] === $dbw->getInfinity() ) {
+ $expiry[$action] = 'infinity';
+ }
+ if ( !isset( $limit[$action] ) ) {
+ $limit[$action] = '';
+ } elseif ( $limit[$action] != '' ) {
+ $protect = true;
+ }
+
+ // Get current restrictions on $action
+ $current = implode( '', $this->mTitle->getRestrictions( $action ) );
+ if ( $current != '' ) {
+ $isProtected = true;
+ }
+
+ if ( $limit[$action] != $current ) {
+ $changed = true;
+ } elseif ( $limit[$action] != '' ) {
+ // Only check expiry change if the action is actually being
+ // protected, since expiry does nothing on an not-protected
+ // action.
+ if ( $this->mTitle->getRestrictionExpiry( $action ) != $expiry[$action] ) {
+ $changed = true;
+ }
+ }
+ }
+
+ if ( !$changed && $protect && $this->mTitle->areRestrictionsCascading() != $cascade ) {
+ $changed = true;
+ }
+
+ // If nothing has changed, do nothing
+ if ( !$changed ) {
+ return Status::newGood();
+ }
+
+ if ( !$protect ) { // No protection at all means unprotection
+ $revCommentMsg = 'unprotectedarticle-comment';
+ $logAction = 'unprotect';
+ } elseif ( $isProtected ) {
+ $revCommentMsg = 'modifiedarticleprotection-comment';
+ $logAction = 'modify';
+ } else {
+ $revCommentMsg = 'protectedarticle-comment';
+ $logAction = 'protect';
+ }
+
+ $logRelationsValues = [];
+ $logRelationsField = null;
+ $logParamsDetails = [];
+
+ // Null revision (used for change tag insertion)
+ $nullRevision = null;
+
+ if ( $id ) { // Protection of existing page
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ if ( !Hooks::run( 'ArticleProtect', [ &$wikiPage, &$user, $limit, $reason ] ) ) {
+ return Status::newGood();
+ }
+
+ // Only certain restrictions can cascade...
+ $editrestriction = isset( $limit['edit'] )
+ ? [ $limit['edit'] ]
+ : $this->mTitle->getRestrictions( 'edit' );
+ foreach ( array_keys( $editrestriction, 'sysop' ) as $key ) {
+ $editrestriction[$key] = 'editprotected'; // backwards compatibility
+ }
+ foreach ( array_keys( $editrestriction, 'autoconfirmed' ) as $key ) {
+ $editrestriction[$key] = 'editsemiprotected'; // backwards compatibility
+ }
+
+ $cascadingRestrictionLevels = $wgCascadingRestrictionLevels;
+ foreach ( array_keys( $cascadingRestrictionLevels, 'sysop' ) as $key ) {
+ $cascadingRestrictionLevels[$key] = 'editprotected'; // backwards compatibility
+ }
+ foreach ( array_keys( $cascadingRestrictionLevels, 'autoconfirmed' ) as $key ) {
+ $cascadingRestrictionLevels[$key] = 'editsemiprotected'; // backwards compatibility
+ }
+
+ // The schema allows multiple restrictions
+ if ( !array_intersect( $editrestriction, $cascadingRestrictionLevels ) ) {
+ $cascade = false;
+ }
+
+ // insert null revision to identify the page protection change as edit summary
+ $latest = $this->getLatest();
+ $nullRevision = $this->insertProtectNullRevision(
+ $revCommentMsg,
+ $limit,
+ $expiry,
+ $cascade,
+ $reason,
+ $user
+ );
+
+ if ( $nullRevision === null ) {
+ return Status::newFatal( 'no-null-revision', $this->mTitle->getPrefixedText() );
+ }
+
+ $logRelationsField = 'pr_id';
+
+ // Update restrictions table
+ foreach ( $limit as $action => $restrictions ) {
+ $dbw->delete(
+ 'page_restrictions',
+ [
+ 'pr_page' => $id,
+ 'pr_type' => $action
+ ],
+ __METHOD__
+ );
+ if ( $restrictions != '' ) {
+ $cascadeValue = ( $cascade && $action == 'edit' ) ? 1 : 0;
+ $dbw->insert(
+ 'page_restrictions',
+ [
+ 'pr_page' => $id,
+ 'pr_type' => $action,
+ 'pr_level' => $restrictions,
+ 'pr_cascade' => $cascadeValue,
+ 'pr_expiry' => $dbw->encodeExpiry( $expiry[$action] )
+ ],
+ __METHOD__
+ );
+ $logRelationsValues[] = $dbw->insertId();
+ $logParamsDetails[] = [
+ 'type' => $action,
+ 'level' => $restrictions,
+ 'expiry' => $expiry[$action],
+ 'cascade' => (bool)$cascadeValue,
+ ];
+ }
+ }
+
+ // Clear out legacy restriction fields
+ $dbw->update(
+ 'page',
+ [ 'page_restrictions' => '' ],
+ [ 'page_id' => $id ],
+ __METHOD__
+ );
+
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ Hooks::run( 'NewRevisionFromEditComplete',
+ [ $this, $nullRevision, $latest, $user ] );
+ Hooks::run( 'ArticleProtectComplete', [ &$wikiPage, &$user, $limit, $reason ] );
+ } else { // Protection of non-existing page (also known as "title protection")
+ // Cascade protection is meaningless in this case
+ $cascade = false;
+
+ if ( $limit['create'] != '' ) {
+ $commentFields = CommentStore::newKey( 'pt_reason' )->insert( $dbw, $reason );
+ $dbw->replace( 'protected_titles',
+ [ [ 'pt_namespace', 'pt_title' ] ],
+ [
+ 'pt_namespace' => $this->mTitle->getNamespace(),
+ 'pt_title' => $this->mTitle->getDBkey(),
+ 'pt_create_perm' => $limit['create'],
+ 'pt_timestamp' => $dbw->timestamp(),
+ 'pt_expiry' => $dbw->encodeExpiry( $expiry['create'] ),
+ 'pt_user' => $user->getId(),
+ ] + $commentFields, __METHOD__
+ );
+ $logParamsDetails[] = [
+ 'type' => 'create',
+ 'level' => $limit['create'],
+ 'expiry' => $expiry['create'],
+ ];
+ } else {
+ $dbw->delete( 'protected_titles',
+ [
+ 'pt_namespace' => $this->mTitle->getNamespace(),
+ 'pt_title' => $this->mTitle->getDBkey()
+ ], __METHOD__
+ );
+ }
+ }
+
+ $this->mTitle->flushRestrictions();
+ InfoAction::invalidateCache( $this->mTitle );
+
+ if ( $logAction == 'unprotect' ) {
+ $params = [];
+ } else {
+ $protectDescriptionLog = $this->protectDescriptionLog( $limit, $expiry );
+ $params = [
+ '4::description' => $protectDescriptionLog, // parameter for IRC
+ '5:bool:cascade' => $cascade,
+ 'details' => $logParamsDetails, // parameter for localize and api
+ ];
+ }
+
+ // Update the protection log
+ $logEntry = new ManualLogEntry( 'protect', $logAction );
+ $logEntry->setTarget( $this->mTitle );
+ $logEntry->setComment( $reason );
+ $logEntry->setPerformer( $user );
+ $logEntry->setParameters( $params );
+ if ( !is_null( $nullRevision ) ) {
+ $logEntry->setAssociatedRevId( $nullRevision->getId() );
+ }
+ $logEntry->setTags( $tags );
+ if ( $logRelationsField !== null && count( $logRelationsValues ) ) {
+ $logEntry->setRelations( [ $logRelationsField => $logRelationsValues ] );
+ }
+ $logId = $logEntry->insert();
+ $logEntry->publish( $logId );
+
+ return Status::newGood( $logId );
+ }
+
+ /**
+ * Insert a new null revision for this page.
+ *
+ * @param string $revCommentMsg Comment message key for the revision
+ * @param array $limit Set of restriction keys
+ * @param array $expiry Per restriction type expiration
+ * @param int $cascade Set to false if cascading protection isn't allowed.
+ * @param string $reason
+ * @param User|null $user
+ * @return Revision|null Null on error
+ */
+ public function insertProtectNullRevision( $revCommentMsg, array $limit,
+ array $expiry, $cascade, $reason, $user = null
+ ) {
+ $dbw = wfGetDB( DB_MASTER );
+
+ // Prepare a null revision to be added to the history
+ $editComment = wfMessage(
+ $revCommentMsg,
+ $this->mTitle->getPrefixedText(),
+ $user ? $user->getName() : ''
+ )->inContentLanguage()->text();
+ if ( $reason ) {
+ $editComment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
+ }
+ $protectDescription = $this->protectDescription( $limit, $expiry );
+ if ( $protectDescription ) {
+ $editComment .= wfMessage( 'word-separator' )->inContentLanguage()->text();
+ $editComment .= wfMessage( 'parentheses' )->params( $protectDescription )
+ ->inContentLanguage()->text();
+ }
+ if ( $cascade ) {
+ $editComment .= wfMessage( 'word-separator' )->inContentLanguage()->text();
+ $editComment .= wfMessage( 'brackets' )->params(
+ wfMessage( 'protect-summary-cascade' )->inContentLanguage()->text()
+ )->inContentLanguage()->text();
+ }
+
+ $nullRev = Revision::newNullRevision( $dbw, $this->getId(), $editComment, true, $user );
+ if ( $nullRev ) {
+ $nullRev->insertOn( $dbw );
+
+ // Update page record and touch page
+ $oldLatest = $nullRev->getParentId();
+ $this->updateRevisionOn( $dbw, $nullRev, $oldLatest );
+ }
+
+ return $nullRev;
+ }
+
+ /**
+ * @param string $expiry 14-char timestamp or "infinity", or false if the input was invalid
+ * @return string
+ */
+ protected function formatExpiry( $expiry ) {
+ global $wgContLang;
+
+ if ( $expiry != 'infinity' ) {
+ return wfMessage(
+ 'protect-expiring',
+ $wgContLang->timeanddate( $expiry, false, false ),
+ $wgContLang->date( $expiry, false, false ),
+ $wgContLang->time( $expiry, false, false )
+ )->inContentLanguage()->text();
+ } else {
+ return wfMessage( 'protect-expiry-indefinite' )
+ ->inContentLanguage()->text();
+ }
+ }
+
+ /**
+ * Builds the description to serve as comment for the edit.
+ *
+ * @param array $limit Set of restriction keys
+ * @param array $expiry Per restriction type expiration
+ * @return string
+ */
+ public function protectDescription( array $limit, array $expiry ) {
+ $protectDescription = '';
+
+ foreach ( array_filter( $limit ) as $action => $restrictions ) {
+ # $action is one of $wgRestrictionTypes = [ 'create', 'edit', 'move', 'upload' ].
+ # All possible message keys are listed here for easier grepping:
+ # * restriction-create
+ # * restriction-edit
+ # * restriction-move
+ # * restriction-upload
+ $actionText = wfMessage( 'restriction-' . $action )->inContentLanguage()->text();
+ # $restrictions is one of $wgRestrictionLevels = [ '', 'autoconfirmed', 'sysop' ],
+ # with '' filtered out. All possible message keys are listed below:
+ # * protect-level-autoconfirmed
+ # * protect-level-sysop
+ $restrictionsText = wfMessage( 'protect-level-' . $restrictions )
+ ->inContentLanguage()->text();
+
+ $expiryText = $this->formatExpiry( $expiry[$action] );
+
+ if ( $protectDescription !== '' ) {
+ $protectDescription .= wfMessage( 'word-separator' )->inContentLanguage()->text();
+ }
+ $protectDescription .= wfMessage( 'protect-summary-desc' )
+ ->params( $actionText, $restrictionsText, $expiryText )
+ ->inContentLanguage()->text();
+ }
+
+ return $protectDescription;
+ }
+
+ /**
+ * Builds the description to serve as comment for the log entry.
+ *
+ * Some bots may parse IRC lines, which are generated from log entries which contain plain
+ * protect description text. Keep them in old format to avoid breaking compatibility.
+ * TODO: Fix protection log to store structured description and format it on-the-fly.
+ *
+ * @param array $limit Set of restriction keys
+ * @param array $expiry Per restriction type expiration
+ * @return string
+ */
+ public function protectDescriptionLog( array $limit, array $expiry ) {
+ global $wgContLang;
+
+ $protectDescriptionLog = '';
+
+ foreach ( array_filter( $limit ) as $action => $restrictions ) {
+ $expiryText = $this->formatExpiry( $expiry[$action] );
+ $protectDescriptionLog .= $wgContLang->getDirMark() .
+ "[$action=$restrictions] ($expiryText)";
+ }
+
+ return trim( $protectDescriptionLog );
+ }
+
+ /**
+ * Take an array of page restrictions and flatten it to a string
+ * suitable for insertion into the page_restrictions field.
+ *
+ * @param string[] $limit
+ *
+ * @throws MWException
+ * @return string
+ */
+ protected static function flattenRestrictions( $limit ) {
+ if ( !is_array( $limit ) ) {
+ throw new MWException( __METHOD__ . ' given non-array restriction set' );
+ }
+
+ $bits = [];
+ ksort( $limit );
+
+ foreach ( array_filter( $limit ) as $action => $restrictions ) {
+ $bits[] = "$action=$restrictions";
+ }
+
+ return implode( ':', $bits );
+ }
+
+ /**
+ * Same as doDeleteArticleReal(), but returns a simple boolean. This is kept around for
+ * backwards compatibility, if you care about error reporting you should use
+ * doDeleteArticleReal() instead.
+ *
+ * Deletes the article with database consistency, writes logs, purges caches
+ *
+ * @param string $reason Delete reason for deletion log
+ * @param bool $suppress Suppress all revisions and log the deletion in
+ * the suppression log instead of the deletion log
+ * @param int $u1 Unused
+ * @param bool $u2 Unused
+ * @param array|string &$error Array of errors to append to
+ * @param User $user The deleting user
+ * @return bool True if successful
+ */
+ public function doDeleteArticle(
+ $reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $user = null
+ ) {
+ $status = $this->doDeleteArticleReal( $reason, $suppress, $u1, $u2, $error, $user );
+ return $status->isGood();
+ }
+
+ /**
+ * Back-end article deletion
+ * Deletes the article with database consistency, writes logs, purges caches
+ *
+ * @since 1.19
+ *
+ * @param string $reason Delete reason for deletion log
+ * @param bool $suppress Suppress all revisions and log the deletion in
+ * the suppression log instead of the deletion log
+ * @param int $u1 Unused
+ * @param bool $u2 Unused
+ * @param array|string &$error Array of errors to append to
+ * @param User $user The deleting user
+ * @param array $tags Tags to apply to the deletion action
+ * @param string $logsubtype
+ * @return Status Status object; if successful, $status->value is the log_id of the
+ * deletion log entry. If the page couldn't be deleted because it wasn't
+ * found, $status is a non-fatal 'cannotdelete' error
+ */
+ public function doDeleteArticleReal(
+ $reason, $suppress = false, $u1 = null, $u2 = null, &$error = '', User $user = null,
+ $tags = [], $logsubtype = 'delete'
+ ) {
+ global $wgUser, $wgContentHandlerUseDB, $wgCommentTableSchemaMigrationStage;
+
+ wfDebug( __METHOD__ . "\n" );
+
+ $status = Status::newGood();
+
+ if ( $this->mTitle->getDBkey() === '' ) {
+ $status->error( 'cannotdelete',
+ wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) );
+ return $status;
+ }
+
+ // Avoid PHP 7.1 warning of passing $this by reference
+ $wikiPage = $this;
+
+ $user = is_null( $user ) ? $wgUser : $user;
+ if ( !Hooks::run( 'ArticleDelete',
+ [ &$wikiPage, &$user, &$reason, &$error, &$status, $suppress ]
+ ) ) {
+ if ( $status->isOK() ) {
+ // Hook aborted but didn't set a fatal status
+ $status->fatal( 'delete-hook-aborted' );
+ }
+ return $status;
+ }
+
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->startAtomic( __METHOD__ );
+
+ $this->loadPageData( self::READ_LATEST );
+ $id = $this->getId();
+ // T98706: lock the page from various other updates but avoid using
+ // WikiPage::READ_LOCKING as that will carry over the FOR UPDATE to
+ // the revisions queries (which also JOIN on user). Only lock the page
+ // row and CAS check on page_latest to see if the trx snapshot matches.
+ $lockedLatest = $this->lockAndGetLatest();
+ if ( $id == 0 || $this->getLatest() != $lockedLatest ) {
+ $dbw->endAtomic( __METHOD__ );
+ // Page not there or trx snapshot is stale
+ $status->error( 'cannotdelete',
+ wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) );
+ return $status;
+ }
+
+ // Given the lock above, we can be confident in the title and page ID values
+ $namespace = $this->getTitle()->getNamespace();
+ $dbKey = $this->getTitle()->getDBkey();
+
+ // At this point we are now comitted to returning an OK
+ // status unless some DB query error or other exception comes up.
+ // This way callers don't have to call rollback() if $status is bad
+ // unless they actually try to catch exceptions (which is rare).
+
+ // we need to remember the old content so we can use it to generate all deletion updates.
+ $revision = $this->getRevision();
+ try {
+ $content = $this->getContent( Revision::RAW );
+ } catch ( Exception $ex ) {
+ wfLogWarning( __METHOD__ . ': failed to load content during deletion! '
+ . $ex->getMessage() );
+
+ $content = null;
+ }
+
+ $revCommentStore = new CommentStore( 'rev_comment' );
+ $arCommentStore = new CommentStore( 'ar_comment' );
+
+ $fields = Revision::selectFields();
+ $bitfield = false;
+
+ // Bitfields to further suppress the content
+ if ( $suppress ) {
+ $bitfield = Revision::SUPPRESSED_ALL;
+ $fields = array_diff( $fields, [ 'rev_deleted' ] );
+ }
+
+ // For now, shunt the revision data into the archive table.
+ // Text is *not* removed from the text table; bulk storage
+ // is left intact to avoid breaking block-compression or
+ // immutable storage schemes.
+ // In the future, we may keep revisions and mark them with
+ // the rev_deleted field, which is reserved for this purpose.
+
+ // Get all of the page revisions
+ $commentQuery = $revCommentStore->getJoin();
+ $res = $dbw->select(
+ [ 'revision' ] + $commentQuery['tables'],
+ $fields + $commentQuery['fields'],
+ [ 'rev_page' => $id ],
+ __METHOD__,
+ 'FOR UPDATE',
+ $commentQuery['joins']
+ );
+
+ // Build their equivalent archive rows
+ $rowsInsert = [];
+ $revids = [];
+
+ /** @var int[] Revision IDs of edits that were made by IPs */
+ $ipRevIds = [];
+
+ foreach ( $res as $row ) {
+ $comment = $revCommentStore->getComment( $row );
+ $rowInsert = [
+ 'ar_namespace' => $namespace,
+ 'ar_title' => $dbKey,
+ 'ar_user' => $row->rev_user,
+ 'ar_user_text' => $row->rev_user_text,
+ 'ar_timestamp' => $row->rev_timestamp,
+ 'ar_minor_edit' => $row->rev_minor_edit,
+ 'ar_rev_id' => $row->rev_id,
+ 'ar_parent_id' => $row->rev_parent_id,
+ 'ar_text_id' => $row->rev_text_id,
+ 'ar_text' => '',
+ 'ar_flags' => '',
+ 'ar_len' => $row->rev_len,
+ 'ar_page_id' => $id,
+ 'ar_deleted' => $suppress ? $bitfield : $row->rev_deleted,
+ 'ar_sha1' => $row->rev_sha1,
+ ] + $arCommentStore->insert( $dbw, $comment );
+ if ( $wgContentHandlerUseDB ) {
+ $rowInsert['ar_content_model'] = $row->rev_content_model;
+ $rowInsert['ar_content_format'] = $row->rev_content_format;
+ }
+ $rowsInsert[] = $rowInsert;
+ $revids[] = $row->rev_id;
+
+ // Keep track of IP edits, so that the corresponding rows can
+ // be deleted in the ip_changes table.
+ if ( (int)$row->rev_user === 0 && IP::isValid( $row->rev_user_text ) ) {
+ $ipRevIds[] = $row->rev_id;
+ }
+ }
+ // Copy them into the archive table
+ $dbw->insert( 'archive', $rowsInsert, __METHOD__ );
+ // Save this so we can pass it to the ArticleDeleteComplete hook.
+ $archivedRevisionCount = $dbw->affectedRows();
+
+ // Clone the title and wikiPage, so we have the information we need when
+ // we log and run the ArticleDeleteComplete hook.
+ $logTitle = clone $this->mTitle;
+ $wikiPageBeforeDelete = clone $this;
+
+ // Now that it's safely backed up, delete it
+ $dbw->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
+ $dbw->delete( 'revision', [ 'rev_page' => $id ], __METHOD__ );
+ if ( $wgCommentTableSchemaMigrationStage > MIGRATION_OLD ) {
+ $dbw->delete( 'revision_comment_temp', [ 'revcomment_rev' => $revids ], __METHOD__ );
+ }
+
+ // Also delete records from ip_changes as applicable.
+ if ( count( $ipRevIds ) > 0 ) {
+ $dbw->delete( 'ip_changes', [ 'ipc_rev_id' => $ipRevIds ], __METHOD__ );
+ }
+
+ // Log the deletion, if the page was suppressed, put it in the suppression log instead
+ $logtype = $suppress ? 'suppress' : 'delete';
+
+ $logEntry = new ManualLogEntry( $logtype, $logsubtype );
+ $logEntry->setPerformer( $user );
+ $logEntry->setTarget( $logTitle );
+ $logEntry->setComment( $reason );
+ $logEntry->setTags( $tags );
+ $logid = $logEntry->insert();
+
+ $dbw->onTransactionPreCommitOrIdle(
+ function () use ( $dbw, $logEntry, $logid ) {
+ // T58776: avoid deadlocks (especially from FileDeleteForm)
+ $logEntry->publish( $logid );
+ },
+ __METHOD__
+ );
+
+ $dbw->endAtomic( __METHOD__ );
+
+ $this->doDeleteUpdates( $id, $content, $revision );
+
+ Hooks::run( 'ArticleDeleteComplete', [
+ &$wikiPageBeforeDelete,
+ &$user,
+ $reason,
+ $id,
+ $content,
+ $logEntry,
+ $archivedRevisionCount
+ ] );
+ $status->value = $logid;
+
+ // Show log excerpt on 404 pages rather than just a link
+ $cache = MediaWikiServices::getInstance()->getMainObjectStash();
+ $key = $cache->makeKey( 'page-recent-delete', md5( $logTitle->getPrefixedText() ) );
+ $cache->set( $key, 1, $cache::TTL_DAY );
+
+ return $status;
+ }
+
+ /**
+ * Lock the page row for this title+id and return page_latest (or 0)
+ *
+ * @return int Returns 0 if no row was found with this title+id
+ * @since 1.27
+ */
+ public function lockAndGetLatest() {
+ return (int)wfGetDB( DB_MASTER )->selectField(
+ 'page',
+ 'page_latest',
+ [
+ 'page_id' => $this->getId(),
+ // Typically page_id is enough, but some code might try to do
+ // updates assuming the title is the same, so verify that
+ 'page_namespace' => $this->getTitle()->getNamespace(),
+ 'page_title' => $this->getTitle()->getDBkey()
+ ],
+ __METHOD__,
+ [ 'FOR UPDATE' ]
+ );
+ }
+
+ /**
+ * Do some database updates after deletion
+ *
+ * @param int $id The page_id value of the page being deleted
+ * @param Content|null $content Optional page content to be used when determining
+ * the required updates. This may be needed because $this->getContent()
+ * may already return null when the page proper was deleted.
+ * @param Revision|null $revision The latest page revision
+ */
+ public function doDeleteUpdates( $id, Content $content = null, Revision $revision = null ) {
+ try {
+ $countable = $this->isCountable();
+ } catch ( Exception $ex ) {
+ // fallback for deleting broken pages for which we cannot load the content for
+ // some reason. Note that doDeleteArticleReal() already logged this problem.
+ $countable = false;
+ }
+
+ // Update site status
+ DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 1, - (int)$countable, -1 ) );
+
+ // Delete pagelinks, update secondary indexes, etc
+ $updates = $this->getDeletionUpdates( $content );
+ foreach ( $updates as $update ) {
+ DeferredUpdates::addUpdate( $update );
+ }
+
+ // Reparse any pages transcluding this page
+ LinksUpdate::queueRecursiveJobsForTable( $this->mTitle, 'templatelinks' );
+
+ // Reparse any pages including this image
+ if ( $this->mTitle->getNamespace() == NS_FILE ) {
+ LinksUpdate::queueRecursiveJobsForTable( $this->mTitle, 'imagelinks' );
+ }
+
+ // Clear caches
+ self::onArticleDelete( $this->mTitle );
+ ResourceLoaderWikiModule::invalidateModuleCache(
+ $this->mTitle, $revision, null, wfWikiID()
+ );
+
+ // Reset this object and the Title object
+ $this->loadFromRow( false, self::READ_LATEST );
+
+ // Search engine
+ DeferredUpdates::addUpdate( new SearchUpdate( $id, $this->mTitle ) );
+ }
+
+ /**
+ * Roll back the most recent consecutive set of edits to a page
+ * from the same user; fails if there are no eligible edits to
+ * roll back to, e.g. user is the sole contributor. This function
+ * performs permissions checks on $user, then calls commitRollback()
+ * to do the dirty work
+ *
+ * @todo Separate the business/permission stuff out from backend code
+ * @todo Remove $token parameter. Already verified by RollbackAction and ApiRollback.
+ *
+ * @param string $fromP Name of the user whose edits to rollback.
+ * @param string $summary Custom summary. Set to default summary if empty.
+ * @param string $token Rollback token.
+ * @param bool $bot If true, mark all reverted edits as bot.
+ *
+ * @param array &$resultDetails Array contains result-specific array of additional values
+ * 'alreadyrolled' : 'current' (rev)
+ * success : 'summary' (str), 'current' (rev), 'target' (rev)
+ *
+ * @param User $user The user performing the rollback
+ * @param array|null $tags Change tags to apply to the rollback
+ * Callers are responsible for permission checks
+ * (with ChangeTags::canAddTagsAccompanyingChange)
+ *
+ * @return array Array of errors, each error formatted as
+ * array(messagekey, param1, param2, ...).
+ * On success, the array is empty. This array can also be passed to
+ * OutputPage::showPermissionsErrorPage().
+ */
+ public function doRollback(
+ $fromP, $summary, $token, $bot, &$resultDetails, User $user, $tags = null
+ ) {
+ $resultDetails = null;
+
+ // Check permissions
+ $editErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $user );
+ $rollbackErrors = $this->mTitle->getUserPermissionsErrors( 'rollback', $user );
+ $errors = array_merge( $editErrors, wfArrayDiff2( $rollbackErrors, $editErrors ) );
+
+ if ( !$user->matchEditToken( $token, 'rollback' ) ) {
+ $errors[] = [ 'sessionfailure' ];
+ }
+
+ if ( $user->pingLimiter( 'rollback' ) || $user->pingLimiter() ) {
+ $errors[] = [ 'actionthrottledtext' ];
+ }
+
+ // If there were errors, bail out now
+ if ( !empty( $errors ) ) {
+ return $errors;
+ }
+
+ return $this->commitRollback( $fromP, $summary, $bot, $resultDetails, $user, $tags );
+ }
+
+ /**
+ * Backend implementation of doRollback(), please refer there for parameter
+ * and return value documentation
+ *
+ * NOTE: This function does NOT check ANY permissions, it just commits the
+ * rollback to the DB. Therefore, you should only call this function direct-
+ * ly if you want to use custom permissions checks. If you don't, use
+ * doRollback() instead.
+ * @param string $fromP Name of the user whose edits to rollback.
+ * @param string $summary Custom summary. Set to default summary if empty.
+ * @param bool $bot If true, mark all reverted edits as bot.
+ *
+ * @param array &$resultDetails Contains result-specific array of additional values
+ * @param User $guser The user performing the rollback
+ * @param array|null $tags Change tags to apply to the rollback
+ * Callers are responsible for permission checks
+ * (with ChangeTags::canAddTagsAccompanyingChange)
+ *
+ * @return array
+ */
+ public function commitRollback( $fromP, $summary, $bot,
+ &$resultDetails, User $guser, $tags = null
+ ) {
+ global $wgUseRCPatrol, $wgContLang;
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ if ( wfReadOnly() ) {
+ return [ [ 'readonlytext' ] ];
+ }
+
+ // Get the last editor
+ $current = $this->getRevision();
+ if ( is_null( $current ) ) {
+ // Something wrong... no page?
+ return [ [ 'notanarticle' ] ];
+ }
+
+ $from = str_replace( '_', ' ', $fromP );
+ // User name given should match up with the top revision.
+ // If the user was deleted then $from should be empty.
+ if ( $from != $current->getUserText() ) {
+ $resultDetails = [ 'current' => $current ];
+ return [ [ 'alreadyrolled',
+ htmlspecialchars( $this->mTitle->getPrefixedText() ),
+ htmlspecialchars( $fromP ),
+ htmlspecialchars( $current->getUserText() )
+ ] ];
+ }
+
+ // Get the last edit not by this person...
+ // Note: these may not be public values
+ $user = intval( $current->getUser( Revision::RAW ) );
+ $user_text = $dbw->addQuotes( $current->getUserText( Revision::RAW ) );
+ $s = $dbw->selectRow( 'revision',
+ [ 'rev_id', 'rev_timestamp', 'rev_deleted' ],
+ [ 'rev_page' => $current->getPage(),
+ "rev_user != {$user} OR rev_user_text != {$user_text}"
+ ], __METHOD__,
+ [ 'USE INDEX' => 'page_timestamp',
+ 'ORDER BY' => 'rev_timestamp DESC' ]
+ );
+ if ( $s === false ) {
+ // No one else ever edited this page
+ return [ [ 'cantrollback' ] ];
+ } elseif ( $s->rev_deleted & Revision::DELETED_TEXT
+ || $s->rev_deleted & Revision::DELETED_USER
+ ) {
+ // Only admins can see this text
+ return [ [ 'notvisiblerev' ] ];
+ }
+
+ // Generate the edit summary if necessary
+ $target = Revision::newFromId( $s->rev_id, Revision::READ_LATEST );
+ if ( empty( $summary ) ) {
+ if ( $from == '' ) { // no public user name
+ $summary = wfMessage( 'revertpage-nouser' );
+ } else {
+ $summary = wfMessage( 'revertpage' );
+ }
+ }
+
+ // Allow the custom summary to use the same args as the default message
+ $args = [
+ $target->getUserText(), $from, $s->rev_id,
+ $wgContLang->timeanddate( wfTimestamp( TS_MW, $s->rev_timestamp ) ),
+ $current->getId(), $wgContLang->timeanddate( $current->getTimestamp() )
+ ];
+ if ( $summary instanceof Message ) {
+ $summary = $summary->params( $args )->inContentLanguage()->text();
+ } else {
+ $summary = wfMsgReplaceArgs( $summary, $args );
+ }
+
+ // Trim spaces on user supplied text
+ $summary = trim( $summary );
+
+ // Save
+ $flags = EDIT_UPDATE | EDIT_INTERNAL;
+
+ if ( $guser->isAllowed( 'minoredit' ) ) {
+ $flags |= EDIT_MINOR;
+ }
+
+ if ( $bot && ( $guser->isAllowedAny( 'markbotedits', 'bot' ) ) ) {
+ $flags |= EDIT_FORCE_BOT;
+ }
+
+ $targetContent = $target->getContent();
+ $changingContentModel = $targetContent->getModel() !== $current->getContentModel();
+
+ // Actually store the edit
+ $status = $this->doEditContent(
+ $targetContent,
+ $summary,
+ $flags,
+ $target->getId(),
+ $guser,
+ null,
+ $tags
+ );
+
+ // Set patrolling and bot flag on the edits, which gets rollbacked.
+ // This is done even on edit failure to have patrolling in that case (T64157).
+ $set = [];
+ if ( $bot && $guser->isAllowed( 'markbotedits' ) ) {
+ // Mark all reverted edits as bot
+ $set['rc_bot'] = 1;
+ }
+
+ if ( $wgUseRCPatrol ) {
+ // Mark all reverted edits as patrolled
+ $set['rc_patrolled'] = 1;
+ }
+
+ if ( count( $set ) ) {
+ $dbw->update( 'recentchanges', $set,
+ [ /* WHERE */
+ 'rc_cur_id' => $current->getPage(),
+ 'rc_user_text' => $current->getUserText(),
+ 'rc_timestamp > ' . $dbw->addQuotes( $s->rev_timestamp ),
+ ],
+ __METHOD__
+ );
+ }
+
+ if ( !$status->isOK() ) {
+ return $status->getErrorsArray();
+ }
+
+ // raise error, when the edit is an edit without a new version
+ $statusRev = isset( $status->value['revision'] )
+ ? $status->value['revision']
+ : null;
+ if ( !( $statusRev instanceof Revision ) ) {
+ $resultDetails = [ 'current' => $current ];
+ return [ [ 'alreadyrolled',
+ htmlspecialchars( $this->mTitle->getPrefixedText() ),
+ htmlspecialchars( $fromP ),
+ htmlspecialchars( $current->getUserText() )
+ ] ];
+ }
+
+ if ( $changingContentModel ) {
+ // If the content model changed during the rollback,
+ // make sure it gets logged to Special:Log/contentmodel
+ $log = new ManualLogEntry( 'contentmodel', 'change' );
+ $log->setPerformer( $guser );
+ $log->setTarget( $this->mTitle );
+ $log->setComment( $summary );
+ $log->setParameters( [
+ '4::oldmodel' => $current->getContentModel(),
+ '5::newmodel' => $targetContent->getModel(),
+ ] );
+
+ $logId = $log->insert( $dbw );
+ $log->publish( $logId );
+ }
+
+ $revId = $statusRev->getId();
+
+ Hooks::run( 'ArticleRollbackComplete', [ $this, $guser, $target, $current ] );
+
+ $resultDetails = [
+ 'summary' => $summary,
+ 'current' => $current,
+ 'target' => $target,
+ 'newid' => $revId
+ ];
+
+ return [];
+ }
+
+ /**
+ * The onArticle*() functions are supposed to be a kind of hooks
+ * which should be called whenever any of the specified actions
+ * are done.
+ *
+ * This is a good place to put code to clear caches, for instance.
+ *
+ * This is called on page move and undelete, as well as edit
+ *
+ * @param Title $title
+ */
+ public static function onArticleCreate( Title $title ) {
+ // Update existence markers on article/talk tabs...
+ $other = $title->getOtherPage();
+
+ $other->purgeSquid();
+
+ $title->touchLinks();
+ $title->purgeSquid();
+ $title->deleteTitleProtection();
+
+ MediaWikiServices::getInstance()->getLinkCache()->invalidateTitle( $title );
+
+ // Invalidate caches of articles which include this page
+ DeferredUpdates::addUpdate( new HTMLCacheUpdate( $title, 'templatelinks' ) );
+
+ if ( $title->getNamespace() == NS_CATEGORY ) {
+ // Load the Category object, which will schedule a job to create
+ // the category table row if necessary. Checking a replica DB is ok
+ // here, in the worst case it'll run an unnecessary recount job on
+ // a category that probably doesn't have many members.
+ Category::newFromTitle( $title )->getID();
+ }
+ }
+
+ /**
+ * Clears caches when article is deleted
+ *
+ * @param Title $title
+ */
+ public static function onArticleDelete( Title $title ) {
+ // Update existence markers on article/talk tabs...
+ $other = $title->getOtherPage();
+
+ $other->purgeSquid();
+
+ $title->touchLinks();
+ $title->purgeSquid();
+
+ MediaWikiServices::getInstance()->getLinkCache()->invalidateTitle( $title );
+
+ // File cache
+ HTMLFileCache::clearFileCache( $title );
+ InfoAction::invalidateCache( $title );
+
+ // Messages
+ if ( $title->getNamespace() == NS_MEDIAWIKI ) {
+ MessageCache::singleton()->updateMessageOverride( $title, null );
+ }
+
+ // Images
+ if ( $title->getNamespace() == NS_FILE ) {
+ DeferredUpdates::addUpdate( new HTMLCacheUpdate( $title, 'imagelinks' ) );
+ }
+
+ // User talk pages
+ if ( $title->getNamespace() == NS_USER_TALK ) {
+ $user = User::newFromName( $title->getText(), false );
+ if ( $user ) {
+ $user->setNewtalk( false );
+ }
+ }
+
+ // Image redirects
+ RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $title );
+ }
+
+ /**
+ * Purge caches on page update etc
+ *
+ * @param Title $title
+ * @param Revision|null $revision Revision that was just saved, may be null
+ */
+ public static function onArticleEdit( Title $title, Revision $revision = null ) {
+ // Invalidate caches of articles which include this page
+ DeferredUpdates::addUpdate( new HTMLCacheUpdate( $title, 'templatelinks' ) );
+
+ // Invalidate the caches of all pages which redirect here
+ DeferredUpdates::addUpdate( new HTMLCacheUpdate( $title, 'redirect' ) );
+
+ MediaWikiServices::getInstance()->getLinkCache()->invalidateTitle( $title );
+
+ // Purge CDN for this page only
+ $title->purgeSquid();
+ // Clear file cache for this page only
+ HTMLFileCache::clearFileCache( $title );
+
+ $revid = $revision ? $revision->getId() : null;
+ DeferredUpdates::addCallableUpdate( function () use ( $title, $revid ) {
+ InfoAction::invalidateCache( $title, $revid );
+ } );
+ }
+
+ /**#@-*/
+
+ /**
+ * Returns a list of categories this page is a member of.
+ * Results will include hidden categories
+ *
+ * @return TitleArray
+ */
+ public function getCategories() {
+ $id = $this->getId();
+ if ( $id == 0 ) {
+ return TitleArray::newFromResult( new FakeResultWrapper( [] ) );
+ }
+
+ $dbr = wfGetDB( DB_REPLICA );
+ $res = $dbr->select( 'categorylinks',
+ [ 'cl_to AS page_title, ' . NS_CATEGORY . ' AS page_namespace' ],
+ // Have to do that since Database::fieldNamesWithAlias treats numeric indexes
+ // as not being aliases, and NS_CATEGORY is numeric
+ [ 'cl_from' => $id ],
+ __METHOD__ );
+
+ return TitleArray::newFromResult( $res );
+ }
+
+ /**
+ * Returns a list of hidden categories this page is a member of.
+ * Uses the page_props and categorylinks tables.
+ *
+ * @return array Array of Title objects
+ */
+ public function getHiddenCategories() {
+ $result = [];
+ $id = $this->getId();
+
+ if ( $id == 0 ) {
+ return [];
+ }
+
+ $dbr = wfGetDB( DB_REPLICA );
+ $res = $dbr->select( [ 'categorylinks', 'page_props', 'page' ],
+ [ 'cl_to' ],
+ [ 'cl_from' => $id, 'pp_page=page_id', 'pp_propname' => 'hiddencat',
+ 'page_namespace' => NS_CATEGORY, 'page_title=cl_to' ],
+ __METHOD__ );
+
+ if ( $res !== false ) {
+ foreach ( $res as $row ) {
+ $result[] = Title::makeTitle( NS_CATEGORY, $row->cl_to );
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Auto-generates a deletion reason
+ *
+ * @param bool &$hasHistory Whether the page has a history
+ * @return string|bool String containing deletion reason or empty string, or boolean false
+ * if no revision occurred
+ */
+ public function getAutoDeleteReason( &$hasHistory ) {
+ return $this->getContentHandler()->getAutoDeleteReason( $this->getTitle(), $hasHistory );
+ }
+
+ /**
+ * Update all the appropriate counts in the category table, given that
+ * we've added the categories $added and deleted the categories $deleted.
+ *
+ * This should only be called from deferred updates or jobs to avoid contention.
+ *
+ * @param array $added The names of categories that were added
+ * @param array $deleted The names of categories that were deleted
+ * @param int $id Page ID (this should be the original deleted page ID)
+ */
+ public function updateCategoryCounts( array $added, array $deleted, $id = 0 ) {
+ $id = $id ?: $this->getId();
+ $ns = $this->getTitle()->getNamespace();
+
+ $addFields = [ 'cat_pages = cat_pages + 1' ];
+ $removeFields = [ 'cat_pages = cat_pages - 1' ];
+ if ( $ns == NS_CATEGORY ) {
+ $addFields[] = 'cat_subcats = cat_subcats + 1';
+ $removeFields[] = 'cat_subcats = cat_subcats - 1';
+ } elseif ( $ns == NS_FILE ) {
+ $addFields[] = 'cat_files = cat_files + 1';
+ $removeFields[] = 'cat_files = cat_files - 1';
+ }
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ if ( count( $added ) ) {
+ $existingAdded = $dbw->selectFieldValues(
+ 'category',
+ 'cat_title',
+ [ 'cat_title' => $added ],
+ __METHOD__
+ );
+
+ // For category rows that already exist, do a plain
+ // UPDATE instead of INSERT...ON DUPLICATE KEY UPDATE
+ // to avoid creating gaps in the cat_id sequence.
+ if ( count( $existingAdded ) ) {
+ $dbw->update(
+ 'category',
+ $addFields,
+ [ 'cat_title' => $existingAdded ],
+ __METHOD__
+ );
+ }
+
+ $missingAdded = array_diff( $added, $existingAdded );
+ if ( count( $missingAdded ) ) {
+ $insertRows = [];
+ foreach ( $missingAdded as $cat ) {
+ $insertRows[] = [
+ 'cat_title' => $cat,
+ 'cat_pages' => 1,
+ 'cat_subcats' => ( $ns == NS_CATEGORY ) ? 1 : 0,
+ 'cat_files' => ( $ns == NS_FILE ) ? 1 : 0,
+ ];
+ }
+ $dbw->upsert(
+ 'category',
+ $insertRows,
+ [ 'cat_title' ],
+ $addFields,
+ __METHOD__
+ );
+ }
+ }
+
+ if ( count( $deleted ) ) {
+ $dbw->update(
+ 'category',
+ $removeFields,
+ [ 'cat_title' => $deleted ],
+ __METHOD__
+ );
+ }
+
+ foreach ( $added as $catName ) {
+ $cat = Category::newFromName( $catName );
+ Hooks::run( 'CategoryAfterPageAdded', [ $cat, $this ] );
+ }
+
+ foreach ( $deleted as $catName ) {
+ $cat = Category::newFromName( $catName );
+ Hooks::run( 'CategoryAfterPageRemoved', [ $cat, $this, $id ] );
+ }
+
+ // Refresh counts on categories that should be empty now, to
+ // trigger possible deletion. Check master for the most
+ // up-to-date cat_pages.
+ if ( count( $deleted ) ) {
+ $rows = $dbw->select(
+ 'category',
+ [ 'cat_id', 'cat_title', 'cat_pages', 'cat_subcats', 'cat_files' ],
+ [ 'cat_title' => $deleted, 'cat_pages <= 0' ],
+ __METHOD__
+ );
+ foreach ( $rows as $row ) {
+ $cat = Category::newFromRow( $row );
+ // T166757: do the update after this DB commit
+ DeferredUpdates::addCallableUpdate( function () use ( $cat ) {
+ $cat->refreshCounts();
+ } );
+ }
+ }
+ }
+
+ /**
+ * Opportunistically enqueue link update jobs given fresh parser output if useful
+ *
+ * @param ParserOutput $parserOutput Current version page output
+ * @since 1.25
+ */
+ public function triggerOpportunisticLinksUpdate( ParserOutput $parserOutput ) {
+ if ( wfReadOnly() ) {
+ return;
+ }
+
+ if ( !Hooks::run( 'OpportunisticLinksUpdate',
+ [ $this, $this->mTitle, $parserOutput ]
+ ) ) {
+ return;
+ }
+
+ $config = RequestContext::getMain()->getConfig();
+
+ $params = [
+ 'isOpportunistic' => true,
+ 'rootJobTimestamp' => $parserOutput->getCacheTime()
+ ];
+
+ if ( $this->mTitle->areRestrictionsCascading() ) {
+ // If the page is cascade protecting, the links should really be up-to-date
+ JobQueueGroup::singleton()->lazyPush(
+ RefreshLinksJob::newPrioritized( $this->mTitle, $params )
+ );
+ } elseif ( !$config->get( 'MiserMode' ) && $parserOutput->hasDynamicContent() ) {
+ // Assume the output contains "dynamic" time/random based magic words.
+ // Only update pages that expired due to dynamic content and NOT due to edits
+ // to referenced templates/files. When the cache expires due to dynamic content,
+ // page_touched is unchanged. We want to avoid triggering redundant jobs due to
+ // views of pages that were just purged via HTMLCacheUpdateJob. In that case, the
+ // template/file edit already triggered recursive RefreshLinksJob jobs.
+ if ( $this->getLinksTimestamp() > $this->getTouched() ) {
+ // If a page is uncacheable, do not keep spamming a job for it.
+ // Although it would be de-duplicated, it would still waste I/O.
+ $cache = ObjectCache::getLocalClusterInstance();
+ $key = $cache->makeKey( 'dynamic-linksupdate', 'last', $this->getId() );
+ $ttl = max( $parserOutput->getCacheExpiry(), 3600 );
+ if ( $cache->add( $key, time(), $ttl ) ) {
+ JobQueueGroup::singleton()->lazyPush(
+ RefreshLinksJob::newDynamic( $this->mTitle, $params )
+ );
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns a list of updates to be performed when this page is deleted. The
+ * updates should remove any information about this page from secondary data
+ * stores such as links tables.
+ *
+ * @param Content|null $content Optional Content object for determining the
+ * necessary updates.
+ * @return DeferrableUpdate[]
+ */
+ public function getDeletionUpdates( Content $content = null ) {
+ if ( !$content ) {
+ // load content object, which may be used to determine the necessary updates.
+ // XXX: the content may not be needed to determine the updates.
+ try {
+ $content = $this->getContent( Revision::RAW );
+ } catch ( Exception $ex ) {
+ // If we can't load the content, something is wrong. Perhaps that's why
+ // the user is trying to delete the page, so let's not fail in that case.
+ // Note that doDeleteArticleReal() will already have logged an issue with
+ // loading the content.
+ }
+ }
+
+ if ( !$content ) {
+ $updates = [];
+ } else {
+ $updates = $content->getDeletionUpdates( $this );
+ }
+
+ Hooks::run( 'WikiPageDeletionUpdates', [ $this, $content, &$updates ] );
+ return $updates;
+ }
+
+ /**
+ * Whether this content displayed on this page
+ * comes from the local database
+ *
+ * @since 1.28
+ * @return bool
+ */
+ public function isLocal() {
+ return true;
+ }
+
+ /**
+ * The display name for the site this content
+ * come from. If a subclass overrides isLocal(),
+ * this could return something other than the
+ * current site name
+ *
+ * @since 1.28
+ * @return string
+ */
+ public function getWikiDisplayName() {
+ global $wgSitename;
+ return $wgSitename;
+ }
+
+ /**
+ * Get the source URL for the content on this page,
+ * typically the canonical URL, but may be a remote
+ * link if the content comes from another site
+ *
+ * @since 1.28
+ * @return string
+ */
+ public function getSourceURL() {
+ return $this->getTitle()->getCanonicalURL();
+ }
+
+ /**
+ * @param WANObjectCache $cache
+ * @return string[]
+ * @since 1.28
+ */
+ public function getMutableCacheKeys( WANObjectCache $cache ) {
+ $linkCache = MediaWikiServices::getInstance()->getLinkCache();
+
+ return $linkCache->getMutableCacheKeys( $cache, $this->getTitle()->getTitleValue() );
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff