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+<?php
+/**
+ * Abstract class for type hinting (accepts WikiPage, Article, ImagePage, CategoryPage)
+ */
+abstract class Page {}
+
+/**
+ * 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.
+ *
+ * @internal documentation reviewed 15 Mar 2010
+ */
+class WikiPage extends Page {
+ /**
+ * @var Title
+ * @protected
+ */
+ public $mTitle = null;
+
+ /**@{{
+ * @protected
+ */
+ public $mCounter = -1; // !< Integer (-1 means "not loaded")
+ public $mDataLoaded = false; // !< Boolean
+ public $mIsRedirect = false; // !< Boolean
+ public $mLatest = false; // !< Boolean
+ public $mPreparedEdit = false; // !< Array
+ public $mRedirectTarget = null; // !< Title object
+ public $mLastRevision = null; // !< Revision object
+ public $mTimestamp = ''; // !< String
+ public $mTouched = '19700101000000'; // !< String
+ /**@}}*/
+
+ /**
+ * @protected
+ * @var ParserOptions: ParserOptions object for $wgUser articles
+ */
+ public $mParserOptions;
+
+ /**
+ * Constructor and clear the article
+ * @param $title Title Reference to a Title object.
+ */
+ public function __construct( Title $title ) {
+ $this->mTitle = $title;
+ }
+
+ /**
+ * Create a WikiPage object of the appropriate class for the given title.
+ *
+ * @param $title Title
+ * @return WikiPage object of the appropriate type
+ */
+ 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." );
+ }
+
+ 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
+ *
+ * Always override this for all subclasses (until we use PHP with LSB)
+ *
+ * @param $id Int article ID to load
+ *
+ * @return WikiPage
+ */
+ public static function newFromID( $id ) {
+ $t = Title::newFromID( $id );
+ # @todo FIXME: Doesn't inherit right
+ return $t == null ? null : new self( $t );
+ # return $t == null ? null : new static( $t ); // PHP 5.3
+ }
+
+ /**
+ * Returns overrides for action handlers.
+ * Classes listed here will be used instead of the default one when
+ * (and only when) $wgActions[$action] === true. This allows subclasses
+ * to override the default behavior.
+ *
+ * @return Array
+ */
+ public function getActionOverrides() {
+ return array();
+ }
+
+ /**
+ * 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|mixed 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_SLAVE );
+ $row = $dbr->selectRow( 'redirect',
+ array( 'rd_namespace', 'rd_title', 'rd_fragment', 'rd_interwiki' ),
+ array( '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 ) ) {
+ return $this->mRedirectTarget = Title::makeTitle(
+ $row->rd_namespace, $row->rd_title,
+ $row->rd_fragment, $row->rd_interwiki );
+ }
+
+ # This page doesn't have an entry in the redirect table
+ return $this->mRedirectTarget = $this->insertRedirect();
+ }
+
+ /**
+ * Insert an entry for this page into the redirect table.
+ *
+ * Don't call this function directly unless you know what you're doing.
+ * @return Title object or null if not a redirect
+ */
+ public function insertRedirect() {
+ // recurse through to only get the final target
+ $retval = Title::newFromRedirectRecurse( $this->getRawText() );
+ if ( !$retval ) {
+ return null;
+ }
+ $this->insertRedirectEntry( $retval );
+ return $retval;
+ }
+
+ /**
+ * Insert or update the redirect table entry for this page to indicate
+ * it redirects to $rt .
+ * @param $rt Title redirect target
+ */
+ public function insertRedirectEntry( $rt ) {
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->replace( 'redirect', array( 'rd_from' ),
+ array(
+ 'rd_from' => $this->getId(),
+ 'rd_namespace' => $rt->getNamespace(),
+ 'rd_title' => $rt->getDBkey(),
+ 'rd_fragment' => $rt->getFragment(),
+ 'rd_interwiki' => $rt->getInterwiki(),
+ ),
+ __METHOD__
+ );
+ }
+
+ /**
+ * Get the Title object or URL this page redirects to
+ *
+ * @return mixed 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 $rt Title Redirect target
+ * @return mixed false, Title object of local target, or string with URL
+ */
+ public function getRedirectURL( $rt ) {
+ if ( $rt ) {
+ if ( $rt->getInterwiki() != '' ) {
+ 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=' . urlencode( $source ) );
+ }
+ } else {
+ if ( $rt->getNamespace() == NS_SPECIAL ) {
+ // Gotta handle redirects to special pages differently:
+ // Fill the HTTP response "Location" header and ignore
+ // the rest of the page we're on.
+ //
+ // This can be hard to reverse, so they may be disabled.
+ if ( $rt->isSpecial( 'Userlogout' ) ) {
+ // rolleyes
+ } else {
+ return $rt->getFullURL();
+ }
+ }
+
+ return $rt;
+ }
+ }
+
+ // No or invalid redirect
+ return false;
+ }
+
+ /**
+ * Get the title object of the article
+ * @return Title object of this page
+ */
+ public function getTitle() {
+ return $this->mTitle;
+ }
+
+ /**
+ * Clear the object
+ */
+ public function clear() {
+ $this->mDataLoaded = false;
+
+ $this->mCounter = -1; # Not loaded
+ $this->mRedirectTarget = null; # Title object if set
+ $this->mLastRevision = null; # Latest revision
+ $this->mTimestamp = '';
+ $this->mTouched = '19700101000000';
+ $this->mIsRedirect = false;
+ $this->mLatest = false;
+ $this->mPreparedEdit = false;
+ }
+
+ /**
+ * Get the text 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 $undo Revision
+ * @param $undoafter Revision Must be an earlier revision than $undo
+ * @return mixed string on success, false on failure
+ */
+ public function getUndoText( Revision $undo, Revision $undoafter = null ) {
+ $cur_text = $this->getRawText();
+ if ( $cur_text === false ) {
+ return false; // no page
+ }
+ $undo_text = $undo->getText();
+ $undoafter_text = $undoafter->getText();
+
+ if ( $cur_text == $undo_text ) {
+ # No use doing a merge if it's just a straight revert.
+ return $undoafter_text;
+ }
+
+ $undone_text = '';
+
+ if ( !wfMerge( $undo_text, $undoafter_text, $cur_text, $undone_text ) ) {
+ return false;
+ }
+
+ return $undone_text;
+ }
+
+ /**
+ * Return the list of revision fields that should be selected to create
+ * a new page.
+ *
+ * @return array
+ */
+ public static function selectFields() {
+ return array(
+ 'page_id',
+ 'page_namespace',
+ 'page_title',
+ 'page_restrictions',
+ 'page_counter',
+ 'page_is_redirect',
+ 'page_is_new',
+ 'page_random',
+ 'page_touched',
+ 'page_latest',
+ 'page_len',
+ );
+ }
+
+ /**
+ * Fetch a page record with the given conditions
+ * @param $dbr DatabaseBase object
+ * @param $conditions Array
+ * @return mixed Database result resource, or false on failure
+ */
+ protected function pageData( $dbr, $conditions ) {
+ $fields = self::selectFields();
+
+ wfRunHooks( 'ArticlePageDataBefore', array( &$this, &$fields ) );
+
+ $row = $dbr->selectRow( 'page', $fields, $conditions, __METHOD__ );
+
+ wfRunHooks( 'ArticlePageDataAfter', array( &$this, &$row ) );
+
+ return $row;
+ }
+
+ /**
+ * Fetch a page record matching the Title object's namespace and title
+ * using a sanitized title string
+ *
+ * @param $dbr DatabaseBase object
+ * @param $title Title object
+ * @return mixed Database result resource, or false on failure
+ */
+ public function pageDataFromTitle( $dbr, $title ) {
+ return $this->pageData( $dbr, array(
+ 'page_namespace' => $title->getNamespace(),
+ 'page_title' => $title->getDBkey() ) );
+ }
+
+ /**
+ * Fetch a page record matching the requested ID
+ *
+ * @param $dbr DatabaseBase
+ * @param $id Integer
+ * @return mixed Database result resource, or false on failure
+ */
+ public function pageDataFromId( $dbr, $id ) {
+ return $this->pageData( $dbr, array( 'page_id' => $id ) );
+ }
+
+ /**
+ * Set the general counter, title etc data loaded from
+ * some source.
+ *
+ * @param $data Object|String One of the following:
+ * A DB query result object or...
+ * "fromdb" to get from a slave DB or...
+ * "fromdbmaster" to get from the master DB
+ * @return void
+ */
+ public function loadPageData( $data = 'fromdb' ) {
+ if ( $data === 'fromdbmaster' ) {
+ $data = $this->pageDataFromTitle( wfGetDB( DB_MASTER ), $this->mTitle );
+ } elseif ( $data === 'fromdb' ) { // slave
+ $data = $this->pageDataFromTitle( wfGetDB( DB_SLAVE ), $this->mTitle );
+ # Use a "last rev inserted" timestamp key to dimish the issue of slave lag.
+ # Note that DB also stores the master position in the session and checks it.
+ $touched = $this->getCachedLastEditTime();
+ if ( $touched ) { // key set
+ if ( !$data || $touched > wfTimestamp( TS_MW, $data->page_touched ) ) {
+ $data = $this->pageDataFromTitle( wfGetDB( DB_MASTER ), $this->mTitle );
+ }
+ }
+ }
+
+ $lc = LinkCache::singleton();
+
+ if ( $data ) {
+ $lc->addGoodLinkObj( $data->page_id, $this->mTitle,
+ $data->page_len, $data->page_is_redirect, $data->page_latest );
+
+ $this->mTitle->loadFromRow( $data );
+
+ # Old-fashioned restrictions
+ $this->mTitle->loadRestrictions( $data->page_restrictions );
+
+ $this->mCounter = intval( $data->page_counter );
+ $this->mTouched = wfTimestamp( TS_MW, $data->page_touched );
+ $this->mIsRedirect = intval( $data->page_is_redirect );
+ $this->mLatest = intval( $data->page_latest );
+ } else {
+ $lc->addBadLinkObj( $this->mTitle );
+
+ $this->mTitle->loadFromRow( false );
+ }
+
+ $this->mDataLoaded = true;
+ }
+
+ /**
+ * @return int Page ID
+ */
+ public function getId() {
+ return $this->mTitle->getArticleID();
+ }
+
+ /**
+ * @return bool Whether or not the page exists in the database
+ */
+ public function exists() {
+ return $this->getId() > 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->exists() || $this->mTitle->isAlwaysKnown();
+ }
+
+ /**
+ * @return int The view count for the page
+ */
+ public function getCount() {
+ if ( -1 == $this->mCounter ) {
+ $id = $this->getId();
+
+ if ( $id == 0 ) {
+ $this->mCounter = 0;
+ } else {
+ $dbr = wfGetDB( DB_SLAVE );
+ $this->mCounter = $dbr->selectField( 'page',
+ 'page_counter',
+ array( 'page_id' => $id ),
+ __METHOD__
+ );
+ }
+ }
+
+ return $this->mCounter;
+ }
+
+ /**
+ * 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 $editInfo Object or false: object returned by prepareTextForEdit(),
+ * if false, the current database state will be used
+ * @return Boolean
+ */
+ public function isCountable( $editInfo = false ) {
+ global $wgArticleCountMethod;
+
+ if ( !$this->mTitle->isContentPage() ) {
+ return false;
+ }
+
+ $text = $editInfo ? $editInfo->pst : false;
+
+ if ( $this->isRedirect( $text ) ) {
+ return false;
+ }
+
+ switch ( $wgArticleCountMethod ) {
+ case 'any':
+ return true;
+ case 'comma':
+ if ( $text === false ) {
+ $text = $this->getRawText();
+ }
+ return strpos( $text, ',' ) !== false;
+ case 'link':
+ 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.
+ return (bool)count( $editInfo->output->getLinks() );
+ } else {
+ return (bool)wfGetDB( DB_SLAVE )->selectField( 'pagelinks', 1,
+ array( 'pl_from' => $this->getId() ), __METHOD__ );
+ }
+ }
+ }
+
+ /**
+ * Tests if the article text represents a redirect
+ *
+ * @param $text mixed string containing article contents, or boolean
+ * @return bool
+ */
+ public function isRedirect( $text = false ) {
+ if ( $text === false ) {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+
+ return (bool)$this->mIsRedirect;
+ } else {
+ return Title::newFromRedirect( $text ) !== null;
+ }
+ }
+
+ /**
+ * 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
+ }
+
+ $revision = Revision::newFromPageId( $this->getId(), $latest );
+ if ( $revision ) { // sanity
+ $this->setLastEdit( $revision );
+ }
+ }
+
+ /**
+ * Set the latest 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 text of the current revision. No side-effects...
+ *
+ * @param $audience Integer: 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
+ * @return String|false The text of the current revision
+ */
+ public function getText( $audience = Revision::FOR_PUBLIC ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getText( $audience );
+ }
+ return false;
+ }
+
+ /**
+ * Get the text of the current revision. No side-effects...
+ *
+ * @return String|false The text of the current revision
+ */
+ public function getRawText() {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getRawText();
+ }
+ return false;
+ }
+
+ /**
+ * @return string MW timestamp of last article revision
+ */
+ public function getTimestamp() {
+ // Check if the field has been filled by WikiPage::setTimestamp()
+ if ( !$this->mTimestamp ) {
+ $this->loadLastEdit();
+ }
+ return wfTimestamp( TS_MW, $this->mTimestamp );
+ }
+
+ /**
+ * Set the page timestamp (use only to avoid DB queries)
+ * @param $ts string MW timestamp of last article revision
+ * @return void
+ */
+ public function setTimestamp( $ts ) {
+ $this->mTimestamp = wfTimestamp( TS_MW, $ts );
+ }
+
+ /**
+ * @param $audience Integer: 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
+ * @return int user ID for the user that made the last article revision
+ */
+ public function getUser( $audience = Revision::FOR_PUBLIC ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getUser( $audience );
+ } else {
+ return -1;
+ }
+ }
+
+ /**
+ * @param $audience Integer: 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
+ * @return string username of the user that made the last article revision
+ */
+ public function getUserText( $audience = Revision::FOR_PUBLIC ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getUserText( $audience );
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * @param $audience Integer: 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
+ * @return string Comment stored for the last article revision
+ */
+ public function getComment( $audience = Revision::FOR_PUBLIC ) {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->getComment( $audience );
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * Returns true if last revision was marked as "minor edit"
+ *
+ * @return boolean Minor edit indicator for the last article revision.
+ */
+ public function getMinorEdit() {
+ $this->loadLastEdit();
+ if ( $this->mLastRevision ) {
+ return $this->mLastRevision->isMinor();
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * 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_SLAVE );
+
+ if ( $dbr->implicitGroupby() ) {
+ $realNameField = 'user_real_name';
+ } else {
+ $realNameField = 'FIRST(user_real_name) AS user_real_name';
+ }
+
+ $tables = array( 'revision', 'user' );
+
+ $fields = array(
+ 'rev_user as user_id',
+ 'rev_user_text AS user_name',
+ $realNameField,
+ 'MAX(rev_timestamp) AS timestamp',
+ );
+
+ $conds = array( '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() )}";
+ }
+
+ $conds[] = "{$dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER )} = 0"; // username hidden?
+
+ $jconds = array(
+ 'user' => array( 'LEFT JOIN', 'rev_user = user_id' ),
+ );
+
+ $options = array(
+ 'GROUP BY' => array( '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 $user User The relevant user
+ * @return boolean
+ */
+ public function isParserCacheUsed( User $user, $oldid ) {
+ global $wgEnableParserCache;
+
+ return $wgEnableParserCache
+ && $user->getStubThreshold() == 0
+ && $this->exists()
+ && empty( $oldid )
+ && !$this->mTitle->isCssOrJsPage()
+ && !$this->mTitle->isCssJsSubpage();
+ }
+
+ /**
+ * Perform the actions of a page purging
+ */
+ public function doPurge() {
+ global $wgUseSquid;
+
+ if( !wfRunHooks( 'ArticlePurge', array( &$this ) ) ){
+ return false;
+ }
+
+ // Invalidate the cache
+ $this->mTitle->invalidateCache();
+ $this->clear();
+
+ if ( $wgUseSquid ) {
+ // Commit the transaction before the purge is sent
+ $dbw = wfGetDB( DB_MASTER );
+ $dbw->commit();
+
+ // Send purge
+ $update = SquidUpdate::newSimplePurge( $this->mTitle );
+ $update->doUpdate();
+ }
+
+ if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+ if ( $this->getId() == 0 ) {
+ $text = false;
+ } else {
+ $text = $this->getRawText();
+ }
+
+ MessageCache::singleton()->replace( $this->mTitle->getDBkey(), $text );
+ }
+ }
+
+ /**
+ * 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 $dbw DatabaseBase
+ * @return int The newly created page_id key, or false if the title already existed
+ * @private
+ */
+ public function insertOn( $dbw ) {
+ wfProfileIn( __METHOD__ );
+
+ $page_id = $dbw->nextSequenceValue( 'page_page_id_seq' );
+ $dbw->insert( 'page', array(
+ 'page_id' => $page_id,
+ 'page_namespace' => $this->mTitle->getNamespace(),
+ 'page_title' => $this->mTitle->getDBkey(),
+ 'page_counter' => 0,
+ '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...
+ ), __METHOD__, 'IGNORE' );
+
+ $affected = $dbw->affectedRows();
+
+ if ( $affected ) {
+ $newid = $dbw->insertId();
+ $this->mTitle->resetArticleID( $newid );
+ }
+ wfProfileOut( __METHOD__ );
+
+ return $affected ? $newid : false;
+ }
+
+ /**
+ * Update the page record to point to a newly saved revision.
+ *
+ * @param $dbw DatabaseBase: object
+ * @param $revision Revision: For ID number, and text used to set
+ length and redirect status fields
+ * @param $lastRevision Integer: 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 $lastRevIsRedirect Boolean: if given, will optimize adding and
+ * removing rows in redirect table.
+ * @return bool true on success, false on failure
+ * @private
+ */
+ public function updateRevisionOn( $dbw, $revision, $lastRevision = null, $lastRevIsRedirect = null ) {
+ wfProfileIn( __METHOD__ );
+
+ $text = $revision->getText();
+ $rt = Title::newFromRedirectRecurse( $text );
+
+ $conditions = array( 'page_id' => $this->getId() );
+
+ if ( !is_null( $lastRevision ) ) {
+ # An extra check against threads stepping on each other
+ $conditions['page_latest'] = $lastRevision;
+ }
+
+ $now = wfTimestampNow();
+ $dbw->update( 'page',
+ array( /* SET */
+ 'page_latest' => $revision->getId(),
+ 'page_touched' => $dbw->timestamp( $now ),
+ 'page_is_new' => ( $lastRevision === 0 ) ? 1 : 0,
+ 'page_is_redirect' => $rt !== null ? 1 : 0,
+ 'page_len' => strlen( $text ),
+ ),
+ $conditions,
+ __METHOD__ );
+
+ $result = $dbw->affectedRows() != 0;
+ if ( $result ) {
+ $this->updateRedirectOn( $dbw, $rt, $lastRevIsRedirect );
+ $this->setCachedLastEditTime( $now );
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $result;
+ }
+
+ /**
+ * Get the cached timestamp for the last time the page changed.
+ * This is only used to help handle slave lag by comparing to page_touched.
+ * @return string MW timestamp
+ */
+ protected function getCachedLastEditTime() {
+ global $wgMemc;
+ $key = wfMemcKey( 'page-lastedit', md5( $this->mTitle->getPrefixedDBkey() ) );
+ return $wgMemc->get( $key );
+ }
+
+ /**
+ * Set the cached timestamp for the last time the page changed.
+ * This is only used to help handle slave lag by comparing to page_touched.
+ * @param $timestamp string
+ * @return void
+ */
+ public function setCachedLastEditTime( $timestamp ) {
+ global $wgMemc;
+ $key = wfMemcKey( 'page-lastedit', md5( $this->mTitle->getPrefixedDBkey() ) );
+ $wgMemc->set( $key, wfTimestamp( TS_MW, $timestamp ), 60*15 );
+ }
+
+ /**
+ * Add row to the redirect table if this is a redirect, remove otherwise.
+ *
+ * @param $dbw DatabaseBase
+ * @param $redirectTitle Title object pointing to the redirect target,
+ * or NULL if this is not a redirect
+ * @param $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 && !is_null( $lastRevIsRedirect ) && $lastRevIsRedirect === $isRedirect ) {
+ return true;
+ }
+
+ wfProfileIn( __METHOD__ );
+ if ( $isRedirect ) {
+ $this->insertRedirectEntry( $redirectTitle );
+ } else {
+ // This is not a redirect, remove row from redirect table
+ $where = array( 'rd_from' => $this->getId() );
+ $dbw->delete( 'redirect', $where, __METHOD__ );
+ }
+
+ if ( $this->getTitle()->getNamespace() == NS_FILE ) {
+ RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $this->getTitle() );
+ }
+ wfProfileOut( __METHOD__ );
+
+ return ( $dbw->affectedRows() != 0 );
+ }
+
+ /**
+ * If the given revision is newer than the currently set page_latest,
+ * update the page record. Otherwise, do nothing.
+ *
+ * @param $dbw Database object
+ * @param $revision Revision object
+ * @return mixed
+ */
+ public function updateIfNewerOn( $dbw, $revision ) {
+ wfProfileIn( __METHOD__ );
+
+ $row = $dbw->selectRow(
+ array( 'revision', 'page' ),
+ array( 'rev_id', 'rev_timestamp', 'page_is_redirect' ),
+ array(
+ 'page_id' => $this->getId(),
+ 'page_latest=rev_id' ),
+ __METHOD__ );
+
+ if ( $row ) {
+ if ( wfTimestamp( TS_MW, $row->rev_timestamp ) >= $revision->getTimestamp() ) {
+ wfProfileOut( __METHOD__ );
+ 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 );
+
+ wfProfileOut( __METHOD__ );
+ return $ret;
+ }
+
+ /**
+ * @param $section empty/null/false or a section number (0, 1, 2, T1, T2...)
+ * @param $text String: new text of the section
+ * @param $summary String: new section's subject, only if $section is 'new'
+ * @param $edittime String: revision timestamp or null to use the current revision
+ * @return string Complete article text, or null if error
+ */
+ public function replaceSection( $section, $text, $summary = '', $edittime = null ) {
+ wfProfileIn( __METHOD__ );
+
+ if ( strval( $section ) == '' ) {
+ // Whole-page edit; let the whole text through
+ } else {
+ if ( is_null( $edittime ) ) {
+ $rev = Revision::newFromTitle( $this->mTitle );
+ } else {
+ $dbw = wfGetDB( DB_MASTER );
+ $rev = Revision::loadFromTimestamp( $dbw, $this->mTitle, $edittime );
+ }
+
+ if ( !$rev ) {
+ wfDebug( "WikiPage::replaceSection asked for bogus section (page: " .
+ $this->getId() . "; section: $section; edittime: $edittime)\n" );
+ wfProfileOut( __METHOD__ );
+ return null;
+ }
+
+ $oldtext = $rev->getText();
+
+ if ( $section == 'new' ) {
+ # Inserting a new section
+ $subject = $summary ? wfMsgForContent( 'newsectionheaderdefaultlevel', $summary ) . "\n\n" : '';
+ $text = strlen( trim( $oldtext ) ) > 0
+ ? "{$oldtext}\n\n{$subject}{$text}"
+ : "{$subject}{$text}";
+ } else {
+ # Replacing an existing section; roll out the big guns
+ global $wgParser;
+
+ $text = $wgParser->replaceSection( $oldtext, $section, $text );
+ }
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $text;
+ }
+
+ /**
+ * Check flags and add EDIT_NEW or EDIT_UPDATE to them as needed.
+ * @param $flags Int
+ * @return Int updated $flags
+ */
+ function checkFlags( $flags ) {
+ if ( !( $flags & EDIT_NEW ) && !( $flags & EDIT_UPDATE ) ) {
+ if ( $this->mTitle->getArticleID() ) {
+ $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 $text String: new text
+ * @param $summary String: edit summary
+ * @param $flags Integer 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_DEFER_UPDATES
+ * Defer some of the updates until the end of index.php
+ * EDIT_AUTOSUMMARY
+ * Fill in blank summaries with generated text where possible
+ *
+ * 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 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 $baseRevId the revision ID this edit was based off, if any
+ * @param $user User the user doing the edit
+ *
+ * @return Status object. 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
+ *
+ * Compatibility note: this function previously returned a boolean value indicating success/failure
+ */
+ public function doEdit( $text, $summary, $flags = 0, $baseRevId = false, $user = null ) {
+ global $wgUser, $wgDBtransactions, $wgUseAutomaticEditSummaries;
+
+ # Low-level sanity check
+ if ( $this->mTitle->getText() === '' ) {
+ throw new MWException( 'Something is trying to edit an article with an empty title' );
+ }
+
+ wfProfileIn( __METHOD__ );
+
+ $user = is_null( $user ) ? $wgUser : $user;
+ $status = Status::newGood( array() );
+
+ # Load $this->mTitle->getArticleID() and $this->mLatest if it's not already
+ $this->loadPageData( 'fromdbmaster' );
+
+ $flags = $this->checkFlags( $flags );
+
+ if ( !wfRunHooks( 'ArticleSave', array( &$this, &$user, &$text, &$summary,
+ $flags & EDIT_MINOR, null, null, &$flags, &$status ) ) )
+ {
+ wfDebug( __METHOD__ . ": ArticleSave hook aborted save!\n" );
+
+ if ( $status->isOK() ) {
+ $status->fatal( 'edit-hook-aborted' );
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $status;
+ }
+
+ # Silently ignore EDIT_MINOR if not allowed
+ $isminor = ( $flags & EDIT_MINOR ) && $user->isAllowed( 'minoredit' );
+ $bot = $flags & EDIT_FORCE_BOT;
+
+ $oldtext = $this->getRawText(); // current revision
+ $oldsize = strlen( $oldtext );
+ $oldcountable = $this->isCountable();
+
+ # Provide autosummaries if one is not provided and autosummaries are enabled.
+ if ( $wgUseAutomaticEditSummaries && $flags & EDIT_AUTOSUMMARY && $summary == '' ) {
+ $summary = self::getAutosummary( $oldtext, $text, $flags );
+ }
+
+ $editInfo = $this->prepareTextForEdit( $text, null, $user );
+ $text = $editInfo->pst;
+ $newsize = strlen( $text );
+
+ $dbw = wfGetDB( DB_MASTER );
+ $now = wfTimestampNow();
+ $this->mTimestamp = $now;
+
+ if ( $flags & EDIT_UPDATE ) {
+ # Update article, but only if changed.
+ $status->value['new'] = false;
+
+ # Make sure the revision is either completely inserted or not inserted at all
+ if ( !$wgDBtransactions ) {
+ $userAbort = ignore_user_abort( true );
+ }
+
+ $revision = new Revision( array(
+ 'page' => $this->getId(),
+ 'comment' => $summary,
+ 'minor_edit' => $isminor,
+ 'text' => $text,
+ 'parent_id' => $this->mLatest,
+ 'user' => $user->getId(),
+ 'user_text' => $user->getName(),
+ 'timestamp' => $now
+ ) );
+
+ $changed = ( strcmp( $text, $oldtext ) != 0 );
+
+ if ( $changed ) {
+ if ( !$this->mLatest ) {
+ # Article gone missing
+ wfDebug( __METHOD__ . ": EDIT_UPDATE specified but article doesn't exist\n" );
+ $status->fatal( 'edit-gone-missing' );
+
+ wfProfileOut( __METHOD__ );
+ return $status;
+ }
+
+ $dbw->begin();
+ $revisionId = $revision->insertOn( $dbw );
+
+ # Update page
+ #
+ # Note that we use $this->mLatest instead of fetching a value from the master DB
+ # during the course of this function. This makes sure that EditPage can detect
+ # edit conflicts reliably, either by $ok here, or by $article->getTimestamp()
+ # before this function is called. A previous function used a separate query, this
+ # creates a window where concurrent edits can cause an ignored edit conflict.
+ $ok = $this->updateRevisionOn( $dbw, $revision, $this->mLatest );
+
+ if ( !$ok ) {
+ /* Belated edit conflict! Run away!! */
+ $status->fatal( 'edit-conflict' );
+
+ # Delete the invalid revision if the DB is not transactional
+ if ( !$wgDBtransactions ) {
+ $dbw->delete( 'revision', array( 'rev_id' => $revisionId ), __METHOD__ );
+ }
+
+ $revisionId = 0;
+ $dbw->rollback();
+ } else {
+ global $wgUseRCPatrol;
+ wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, $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
+ $rc = RecentChange::notifyEdit( $now, $this->mTitle, $isminor, $user, $summary,
+ $this->mLatest, $this->getTimestamp(), $bot, '', $oldsize, $newsize,
+ $revisionId, $patrolled
+ );
+
+ # Log auto-patrolled edits
+ if ( $patrolled ) {
+ PatrolLog::record( $rc, true );
+ }
+ }
+ $user->incEditCount();
+ $dbw->commit();
+ }
+ }
+
+ if ( !$wgDBtransactions ) {
+ ignore_user_abort( $userAbort );
+ }
+
+ // Now that ignore_user_abort is restored, we can respond to fatal errors
+ if ( !$status->isOK() ) {
+ wfProfileOut( __METHOD__ );
+ return $status;
+ }
+
+ # Update links tables, site stats, etc.
+ $this->doEditUpdates( $revision, $user, array( 'changed' => $changed,
+ 'oldcountable' => $oldcountable ) );
+
+ if ( !$changed ) {
+ $status->warning( 'edit-no-change' );
+ $revision = null;
+ // Keep the same revision ID, but do some updates on it
+ $revisionId = $this->getLatest();
+ // Update page_touched, this is usually implicit in the page update
+ // Other cache updates are done in onArticleEdit()
+ $this->mTitle->invalidateCache();
+ }
+ } else {
+ # Create new article
+ $status->value['new'] = true;
+
+ $dbw->begin();
+
+ # Add the page record; stake our claim on this title!
+ # This will return false if the article already exists
+ $newid = $this->insertOn( $dbw );
+
+ if ( $newid === false ) {
+ $dbw->rollback();
+ $status->fatal( 'edit-already-exists' );
+
+ wfProfileOut( __METHOD__ );
+ return $status;
+ }
+
+ # Save the revision text...
+ $revision = new Revision( array(
+ 'page' => $newid,
+ 'comment' => $summary,
+ 'minor_edit' => $isminor,
+ 'text' => $text,
+ 'user' => $user->getId(),
+ 'user_text' => $user->getName(),
+ 'timestamp' => $now
+ ) );
+ $revisionId = $revision->insertOn( $dbw );
+
+ $this->mTitle->resetArticleID( $newid );
+ # Update the LinkCache. Resetting the Title ArticleID means it will rely on having that already cached
+ # @todo FIXME?
+ LinkCache::singleton()->addGoodLinkObj( $newid, $this->mTitle, strlen( $text ), (bool)Title::newFromRedirect( $text ), $revisionId );
+
+ # Update the page record with revision data
+ $this->updateRevisionOn( $dbw, $revision, 0 );
+
+ wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, false, $user ) );
+
+ # Update recentchanges
+ if ( !( $flags & EDIT_SUPPRESS_RC ) ) {
+ global $wgUseRCPatrol, $wgUseNPPatrol;
+
+ # Mark as patrolled if the user can do so
+ $patrolled = ( $wgUseRCPatrol || $wgUseNPPatrol ) && !count(
+ $this->mTitle->getUserPermissionsErrors( 'autopatrol', $user ) );
+ # Add RC row to the DB
+ $rc = RecentChange::notifyNew( $now, $this->mTitle, $isminor, $user, $summary, $bot,
+ '', strlen( $text ), $revisionId, $patrolled );
+
+ # Log auto-patrolled edits
+ if ( $patrolled ) {
+ PatrolLog::record( $rc, true );
+ }
+ }
+ $user->incEditCount();
+ $dbw->commit();
+
+ # Update links, etc.
+ $this->doEditUpdates( $revision, $user, array( 'created' => true ) );
+
+ wfRunHooks( 'ArticleInsertComplete', array( &$this, &$user, $text, $summary,
+ $flags & EDIT_MINOR, null, null, &$flags, $revision ) );
+ }
+
+ # Do updates right now unless deferral was requested
+ if ( !( $flags & EDIT_DEFER_UPDATES ) ) {
+ wfDoUpdates();
+ }
+
+ // Return the new revision (or null) to the caller
+ $status->value['revision'] = $revision;
+
+ wfRunHooks( 'ArticleSaveComplete', array( &$this, &$user, $text, $summary,
+ $flags & EDIT_MINOR, null, null, &$flags, $revision, &$status, $baseRevId ) );
+
+ # Promote user to any groups they meet the criteria for
+ $user->addAutopromoteOnceGroups( 'onEdit' );
+
+ wfProfileOut( __METHOD__ );
+ return $status;
+ }
+
+ /**
+ * Update the article's restriction field, and leave a log entry.
+ *
+ * @param $limit Array: set of restriction keys
+ * @param $reason String
+ * @param &$cascade Integer. Set to false if cascading protection isn't allowed.
+ * @param $expiry Array: per restriction type expiration
+ * @param $user User The user updating the restrictions
+ * @return bool true on success
+ */
+ public function updateRestrictions(
+ $limit = array(), $reason = '', &$cascade = 0, $expiry = array(), User $user = null
+ ) {
+ global $wgUser, $wgContLang;
+ $user = is_null( $user ) ? $wgUser : $user;
+
+ $restrictionTypes = $this->mTitle->getRestrictionTypes();
+
+ $id = $this->mTitle->getArticleID();
+
+ if ( $id <= 0 ) {
+ wfDebug( "updateRestrictions failed: article id $id <= 0\n" );
+ return false;
+ }
+
+ if ( wfReadOnly() ) {
+ wfDebug( "updateRestrictions failed: read-only\n" );
+ return false;
+ }
+
+ if ( count( $this->mTitle->getUserPermissionsErrors( 'protect', $user ) ) ) {
+ wfDebug( "updateRestrictions failed: insufficient permissions\n" );
+ return false;
+ }
+
+ if ( !$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.
+ $current = array();
+ $updated = self::flattenRestrictions( $limit );
+ $changed = false;
+
+ foreach ( $restrictionTypes as $action ) {
+ if ( isset( $expiry[$action] ) ) {
+ # Get current restrictions on $action
+ $aLimits = $this->mTitle->getRestrictions( $action );
+ $current[$action] = implode( '', $aLimits );
+ # Are any actual restrictions being dealt with here?
+ $aRChanged = count( $aLimits ) || !empty( $limit[$action] );
+
+ # If something changed, we need to log it. Checking $aRChanged
+ # assures that "unprotecting" a page that is not protected does
+ # not log just because the expiry was "changed".
+ if ( $aRChanged &&
+ $this->mTitle->getRestrictionExpiry( $action ) != $expiry[$action] )
+ {
+ $changed = true;
+ }
+ }
+ }
+
+ $current = self::flattenRestrictions( $current );
+
+ $changed = ( $changed || $current != $updated );
+ $changed = $changed || ( $updated && $this->mTitle->areRestrictionsCascading() != $cascade );
+ $protect = ( $updated != '' );
+
+ # If nothing's changed, do nothing
+ if ( $changed ) {
+ if ( wfRunHooks( 'ArticleProtect', array( &$this, &$user, $limit, $reason ) ) ) {
+ $dbw = wfGetDB( DB_MASTER );
+
+ # Prepare a null revision to be added to the history
+ $modified = $current != '' && $protect;
+
+ if ( $protect ) {
+ $comment_type = $modified ? 'modifiedarticleprotection' : 'protectedarticle';
+ } else {
+ $comment_type = 'unprotectedarticle';
+ }
+
+ $comment = $wgContLang->ucfirst( wfMsgForContent( $comment_type, $this->mTitle->getPrefixedText() ) );
+
+ # Only restrictions with the 'protect' right can cascade...
+ # Otherwise, people who cannot normally protect can "protect" pages via transclusion
+ $editrestriction = isset( $limit['edit'] ) ? array( $limit['edit'] ) : $this->mTitle->getRestrictions( 'edit' );
+
+ # The schema allows multiple restrictions
+ if ( !in_array( 'protect', $editrestriction ) && !in_array( 'sysop', $editrestriction ) ) {
+ $cascade = false;
+ }
+
+ $cascade_description = '';
+
+ if ( $cascade ) {
+ $cascade_description = ' [' . wfMsgForContent( 'protect-summary-cascade' ) . ']';
+ }
+
+ if ( $reason ) {
+ $comment .= ": $reason";
+ }
+
+ $editComment = $comment;
+ $encodedExpiry = array();
+ $protect_description = '';
+ foreach ( $limit as $action => $restrictions ) {
+ if ( !isset( $expiry[$action] ) )
+ $expiry[$action] = $dbw->getInfinity();
+
+ $encodedExpiry[$action] = $dbw->encodeExpiry( $expiry[$action] );
+ if ( $restrictions != '' ) {
+ $protect_description .= "[$action=$restrictions] (";
+ if ( $encodedExpiry[$action] != 'infinity' ) {
+ $protect_description .= wfMsgForContent( 'protect-expiring',
+ $wgContLang->timeanddate( $expiry[$action], false, false ) ,
+ $wgContLang->date( $expiry[$action], false, false ) ,
+ $wgContLang->time( $expiry[$action], false, false ) );
+ } else {
+ $protect_description .= wfMsgForContent( 'protect-expiry-indefinite' );
+ }
+
+ $protect_description .= ') ';
+ }
+ }
+ $protect_description = trim( $protect_description );
+
+ if ( $protect_description && $protect ) {
+ $editComment .= " ($protect_description)";
+ }
+
+ if ( $cascade ) {
+ $editComment .= "$cascade_description";
+ }
+
+ # Update restrictions table
+ foreach ( $limit as $action => $restrictions ) {
+ if ( $restrictions != '' ) {
+ $dbw->replace( 'page_restrictions', array( array( 'pr_page', 'pr_type' ) ),
+ array( 'pr_page' => $id,
+ 'pr_type' => $action,
+ 'pr_level' => $restrictions,
+ 'pr_cascade' => ( $cascade && $action == 'edit' ) ? 1 : 0,
+ 'pr_expiry' => $encodedExpiry[$action]
+ ),
+ __METHOD__
+ );
+ } else {
+ $dbw->delete( 'page_restrictions', array( 'pr_page' => $id,
+ 'pr_type' => $action ), __METHOD__ );
+ }
+ }
+
+ # Insert a null revision
+ $nullRevision = Revision::newNullRevision( $dbw, $id, $editComment, true );
+ $nullRevId = $nullRevision->insertOn( $dbw );
+
+ $latest = $this->getLatest();
+ # Update page record
+ $dbw->update( 'page',
+ array( /* SET */
+ 'page_touched' => $dbw->timestamp(),
+ 'page_restrictions' => '',
+ 'page_latest' => $nullRevId
+ ), array( /* WHERE */
+ 'page_id' => $id
+ ), __METHOD__
+ );
+
+ wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $nullRevision, $latest, $user ) );
+ wfRunHooks( 'ArticleProtectComplete', array( &$this, &$user, $limit, $reason ) );
+
+ # Update the protection log
+ $log = new LogPage( 'protect' );
+ if ( $protect ) {
+ $params = array( $protect_description, $cascade ? 'cascade' : '' );
+ $log->addEntry( $modified ? 'modify' : 'protect', $this->mTitle, trim( $reason ), $params );
+ } else {
+ $log->addEntry( 'unprotect', $this->mTitle, $reason );
+ }
+ } # End hook
+ } # End "changed" check
+
+ return true;
+ }
+
+ /**
+ * Take an array of page restrictions and flatten it to a string
+ * suitable for insertion into the page_restrictions field.
+ * @param $limit Array
+ * @return String
+ */
+ protected static function flattenRestrictions( $limit ) {
+ if ( !is_array( $limit ) ) {
+ throw new MWException( 'WikiPage::flattenRestrictions given non-array restriction set' );
+ }
+
+ $bits = array();
+ ksort( $limit );
+
+ foreach ( $limit as $action => $restrictions ) {
+ if ( $restrictions != '' ) {
+ $bits[] = "$action=$restrictions";
+ }
+ }
+
+ return implode( ':', $bits );
+ }
+
+ /**
+ * @return bool whether or not the page surpasses $wgDeleteRevisionsLimit revisions
+ */
+ public function isBigDeletion() {
+ global $wgDeleteRevisionsLimit;
+
+ if ( $wgDeleteRevisionsLimit ) {
+ $revCount = $this->estimateRevisionCount();
+
+ return $revCount > $wgDeleteRevisionsLimit;
+ }
+
+ return false;
+ }
+
+ /**
+ * @return int approximate revision count
+ */
+ public function estimateRevisionCount() {
+ $dbr = wfGetDB( DB_SLAVE );
+
+ // For an exact count...
+ // return $dbr->selectField( 'revision', 'COUNT(*)',
+ // array( 'rev_page' => $this->getId() ), __METHOD__ );
+ return $dbr->estimateRowCount( 'revision', '*',
+ array( 'rev_page' => $this->getId() ), __METHOD__ );
+ }
+
+ /**
+ * Get the last N authors
+ * @param $num Integer: number of revisions to get
+ * @param $revLatest String: the latest rev_id, selected from the master (optional)
+ * @return array Array of authors, duplicates not removed
+ */
+ public function getLastNAuthors( $num, $revLatest = 0 ) {
+ wfProfileIn( __METHOD__ );
+ // First try the slave
+ // If that doesn't have the latest revision, try the master
+ $continue = 2;
+ $db = wfGetDB( DB_SLAVE );
+
+ do {
+ $res = $db->select( array( 'page', 'revision' ),
+ array( 'rev_id', 'rev_user_text' ),
+ array(
+ 'page_namespace' => $this->mTitle->getNamespace(),
+ 'page_title' => $this->mTitle->getDBkey(),
+ 'rev_page = page_id'
+ ), __METHOD__,
+ array(
+ 'ORDER BY' => 'rev_timestamp DESC',
+ 'LIMIT' => $num
+ )
+ );
+
+ if ( !$res ) {
+ wfProfileOut( __METHOD__ );
+ return array();
+ }
+
+ $row = $db->fetchObject( $res );
+
+ if ( $continue == 2 && $revLatest && $row->rev_id != $revLatest ) {
+ $db = wfGetDB( DB_MASTER );
+ $continue--;
+ } else {
+ $continue = 0;
+ }
+ } while ( $continue );
+
+ $authors = array( $row->rev_user_text );
+
+ foreach ( $res as $row ) {
+ $authors[] = $row->rev_user_text;
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $authors;
+ }
+
+ /**
+ * Back-end article deletion
+ * Deletes the article with database consistency, writes logs, purges caches
+ *
+ * @param $reason string delete reason for deletion log
+ * @param suppress bitfield
+ * Revision::DELETED_TEXT
+ * Revision::DELETED_COMMENT
+ * Revision::DELETED_USER
+ * Revision::DELETED_RESTRICTED
+ * @param $id int article ID
+ * @param $commit boolean defaults to true, triggers transaction end
+ * @param &$errors Array of errors to append to
+ * @param $user User The relevant user
+ * @return boolean true if successful
+ */
+ public function doDeleteArticle(
+ $reason, $suppress = false, $id = 0, $commit = true, &$error = '', User $user = null
+ ) {
+ global $wgDeferredUpdateList, $wgUseTrackbacks, $wgUser;
+ $user = is_null( $user ) ? $wgUser : $user;
+
+ wfDebug( __METHOD__ . "\n" );
+
+ if ( ! wfRunHooks( 'ArticleDelete', array( &$this, &$user, &$reason, &$error ) ) ) {
+ return false;
+ }
+ $dbw = wfGetDB( DB_MASTER );
+ $t = $this->mTitle->getDBkey();
+ $id = $id ? $id : $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
+
+ if ( $t === '' || $id == 0 ) {
+ return false;
+ }
+
+ $u = new SiteStatsUpdate( 0, 1, - (int)$this->isCountable(), -1 );
+ array_push( $wgDeferredUpdateList, $u );
+
+ // Bitfields to further suppress the content
+ if ( $suppress ) {
+ $bitfield = 0;
+ // This should be 15...
+ $bitfield |= Revision::DELETED_TEXT;
+ $bitfield |= Revision::DELETED_COMMENT;
+ $bitfield |= Revision::DELETED_USER;
+ $bitfield |= Revision::DELETED_RESTRICTED;
+ } else {
+ $bitfield = 'rev_deleted';
+ }
+
+ $dbw->begin();
+ // 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.
+ //
+ // For backwards compatibility, note that some older archive
+ // table entries will have ar_text and ar_flags fields still.
+ //
+ // In the future, we may keep revisions and mark them with
+ // the rev_deleted field, which is reserved for this purpose.
+ $dbw->insertSelect( 'archive', array( 'page', 'revision' ),
+ array(
+ 'ar_namespace' => 'page_namespace',
+ 'ar_title' => 'page_title',
+ 'ar_comment' => 'rev_comment',
+ 'ar_user' => 'rev_user',
+ 'ar_user_text' => 'rev_user_text',
+ 'ar_timestamp' => 'rev_timestamp',
+ 'ar_minor_edit' => 'rev_minor_edit',
+ 'ar_rev_id' => 'rev_id',
+ 'ar_text_id' => 'rev_text_id',
+ 'ar_text' => '\'\'', // Be explicit to appease
+ 'ar_flags' => '\'\'', // MySQL's "strict mode"...
+ 'ar_len' => 'rev_len',
+ 'ar_page_id' => 'page_id',
+ 'ar_deleted' => $bitfield
+ ), array(
+ 'page_id' => $id,
+ 'page_id = rev_page'
+ ), __METHOD__
+ );
+
+ # Delete restrictions for it
+ $dbw->delete( 'page_restrictions', array ( 'pr_page' => $id ), __METHOD__ );
+
+ # Now that it's safely backed up, delete it
+ $dbw->delete( 'page', array( 'page_id' => $id ), __METHOD__ );
+ $ok = ( $dbw->affectedRows() > 0 ); // getArticleId() uses slave, could be laggy
+
+ if ( !$ok ) {
+ $dbw->rollback();
+ return false;
+ }
+
+ # Fix category table counts
+ $cats = array();
+ $res = $dbw->select( 'categorylinks', 'cl_to', array( 'cl_from' => $id ), __METHOD__ );
+
+ foreach ( $res as $row ) {
+ $cats [] = $row->cl_to;
+ }
+
+ $this->updateCategoryCounts( array(), $cats );
+
+ # If using cascading deletes, we can skip some explicit deletes
+ if ( !$dbw->cascadingDeletes() ) {
+ $dbw->delete( 'revision', array( 'rev_page' => $id ), __METHOD__ );
+
+ if ( $wgUseTrackbacks )
+ $dbw->delete( 'trackbacks', array( 'tb_page' => $id ), __METHOD__ );
+
+ # Delete outgoing links
+ $dbw->delete( 'pagelinks', array( 'pl_from' => $id ) );
+ $dbw->delete( 'imagelinks', array( 'il_from' => $id ) );
+ $dbw->delete( 'categorylinks', array( 'cl_from' => $id ) );
+ $dbw->delete( 'templatelinks', array( 'tl_from' => $id ) );
+ $dbw->delete( 'externallinks', array( 'el_from' => $id ) );
+ $dbw->delete( 'langlinks', array( 'll_from' => $id ) );
+ $dbw->delete( 'iwlinks', array( 'iwl_from' => $id ) );
+ $dbw->delete( 'redirect', array( 'rd_from' => $id ) );
+ }
+
+ # If using cleanup triggers, we can skip some manual deletes
+ if ( !$dbw->cleanupTriggers() ) {
+ # Clean up recentchanges entries...
+ $dbw->delete( 'recentchanges',
+ array( 'rc_type != ' . RC_LOG,
+ 'rc_namespace' => $this->mTitle->getNamespace(),
+ 'rc_title' => $this->mTitle->getDBkey() ),
+ __METHOD__ );
+ $dbw->delete( 'recentchanges',
+ array( 'rc_type != ' . RC_LOG, 'rc_cur_id' => $id ),
+ __METHOD__ );
+ }
+
+ # Clear caches
+ self::onArticleDelete( $this->mTitle );
+
+ # Clear the cached article id so the interface doesn't act like we exist
+ $this->mTitle->resetArticleID( 0 );
+
+ # Log the deletion, if the page was suppressed, log it at Oversight instead
+ $logtype = $suppress ? 'suppress' : 'delete';
+ $log = new LogPage( $logtype );
+
+ # Make sure logging got through
+ $log->addEntry( 'delete', $this->mTitle, $reason, array() );
+
+ if ( $commit ) {
+ $dbw->commit();
+ }
+
+ wfRunHooks( 'ArticleDeleteComplete', array( &$this, &$user, $reason, $id ) );
+ return true;
+ }
+
+ /**
+ * 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
+ *
+ * @param $fromP String: Name of the user whose edits to rollback.
+ * @param $summary String: Custom summary. Set to default summary if empty.
+ * @param $token String: Rollback token.
+ * @param $bot Boolean: If true, mark all reverted edits as bot.
+ *
+ * @param $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
+ * @return 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
+ ) {
+ $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, array( $this->mTitle->getPrefixedText(), $fromP ) ) ) {
+ $errors[] = array( 'sessionfailure' );
+ }
+
+ if ( $user->pingLimiter( 'rollback' ) || $user->pingLimiter() ) {
+ $errors[] = array( 'actionthrottledtext' );
+ }
+
+ # If there were errors, bail out now
+ if ( !empty( $errors ) ) {
+ return $errors;
+ }
+
+ return $this->commitRollback( $fromP, $summary, $bot, $resultDetails, $user );
+ }
+
+ /**
+ * 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 $fromP String: Name of the user whose edits to rollback.
+ * @param $summary String: Custom summary. Set to default summary if empty.
+ * @param $bot Boolean: If true, mark all reverted edits as bot.
+ *
+ * @param $resultDetails Array: contains result-specific array of additional values
+ * @param $guser User The user performing the rollback
+ */
+ public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser ) {
+ global $wgUseRCPatrol, $wgContLang;
+
+ $dbw = wfGetDB( DB_MASTER );
+
+ if ( wfReadOnly() ) {
+ return array( array( 'readonlytext' ) );
+ }
+
+ # Get the last editor
+ $current = Revision::newFromTitle( $this->mTitle );
+ if ( is_null( $current ) ) {
+ # Something wrong... no page?
+ return array( array( '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 = array( 'current' => $current );
+ return array( array( 'alreadyrolled',
+ htmlspecialchars( $this->mTitle->getPrefixedText() ),
+ htmlspecialchars( $fromP ),
+ htmlspecialchars( $current->getUserText() )
+ ) );
+ }
+
+ # Get the last edit not by this guy...
+ # Note: these may not be public values
+ $user = intval( $current->getRawUser() );
+ $user_text = $dbw->addQuotes( $current->getRawUserText() );
+ $s = $dbw->selectRow( 'revision',
+ array( 'rev_id', 'rev_timestamp', 'rev_deleted' ),
+ array( 'rev_page' => $current->getPage(),
+ "rev_user != {$user} OR rev_user_text != {$user_text}"
+ ), __METHOD__,
+ array( 'USE INDEX' => 'page_timestamp',
+ 'ORDER BY' => 'rev_timestamp DESC' )
+ );
+ if ( $s === false ) {
+ # No one else ever edited this page
+ return array( array( 'cantrollback' ) );
+ } elseif ( $s->rev_deleted & Revision::DELETED_TEXT || $s->rev_deleted & Revision::DELETED_USER ) {
+ # Only admins can see this text
+ return array( array( 'notvisiblerev' ) );
+ }
+
+ $set = array();
+ 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,
+ array( /* WHERE */
+ 'rc_cur_id' => $current->getPage(),
+ 'rc_user_text' => $current->getUserText(),
+ "rc_timestamp > '{$s->rev_timestamp}'",
+ ), __METHOD__
+ );
+ }
+
+ # Generate the edit summary if necessary
+ $target = Revision::newFromId( $s->rev_id );
+ if ( empty( $summary ) ) {
+ if ( $from == '' ) { // no public user name
+ $summary = wfMsgForContent( 'revertpage-nouser' );
+ } else {
+ $summary = wfMsgForContent( 'revertpage' );
+ }
+ }
+
+ # Allow the custom summary to use the same args as the default message
+ $args = array(
+ $target->getUserText(), $from, $s->rev_id,
+ $wgContLang->timeanddate( wfTimestamp( TS_MW, $s->rev_timestamp ) ),
+ $current->getId(), $wgContLang->timeanddate( $current->getTimestamp() )
+ );
+ $summary = wfMsgReplaceArgs( $summary, $args );
+
+ # Save
+ $flags = EDIT_UPDATE;
+
+ if ( $guser->isAllowed( 'minoredit' ) ) {
+ $flags |= EDIT_MINOR;
+ }
+
+ if ( $bot && ( $guser->isAllowedAny( 'markbotedits', 'bot' ) ) ) {
+ $flags |= EDIT_FORCE_BOT;
+ }
+
+ # Actually store the edit
+ $status = $this->doEdit( $target->getText(), $summary, $flags, $target->getId() );
+ if ( !empty( $status->value['revision'] ) ) {
+ $revId = $status->value['revision']->getId();
+ } else {
+ $revId = false;
+ }
+
+ wfRunHooks( 'ArticleRollbackComplete', array( $this, $guser, $target, $current ) );
+
+ $resultDetails = array(
+ 'summary' => $summary,
+ 'current' => $current,
+ 'target' => $target,
+ 'newid' => $revId
+ );
+
+ return array();
+ }
+
+ /**
+ * Do standard deferred updates after page view
+ * @param $user User The relevant user
+ */
+ public function doViewUpdates( User $user ) {
+ global $wgDeferredUpdateList, $wgDisableCounters;
+ if ( wfReadOnly() ) {
+ return;
+ }
+
+ # Don't update page view counters on views from bot users (bug 14044)
+ if ( !$wgDisableCounters && !$user->isAllowed( 'bot' ) && $this->getId() ) {
+ $wgDeferredUpdateList[] = new ViewCountUpdate( $this->getId() );
+ $wgDeferredUpdateList[] = new SiteStatsUpdate( 1, 0, 0 );
+ }
+
+ # Update newtalk / watchlist notification status
+ $user->clearNotification( $this->mTitle );
+ }
+
+ /**
+ * Prepare text which is about to be saved.
+ * Returns a stdclass with source, pst and output members
+ */
+ public function prepareTextForEdit( $text, $revid = null, User $user = null ) {
+ global $wgParser, $wgUser;
+ $user = is_null( $user ) ? $wgUser : $user;
+ // @TODO fixme: check $user->getId() here???
+ if ( $this->mPreparedEdit
+ && $this->mPreparedEdit->newText == $text
+ && $this->mPreparedEdit->revid == $revid
+ ) {
+ // Already prepared
+ return $this->mPreparedEdit;
+ }
+
+ $popts = ParserOptions::newFromUser( $user );
+ wfRunHooks( 'ArticlePrepareTextForEdit', array( $this, $popts ) );
+
+ $edit = (object)array();
+ $edit->revid = $revid;
+ $edit->newText = $text;
+ $edit->pst = $this->preSaveTransform( $text, $user, $popts );
+ $edit->popts = $this->getParserOptions( true );
+ $edit->output = $wgParser->parse( $edit->pst, $this->mTitle, $edit->popts, true, true, $revid );
+ $edit->oldText = $this->getRawText();
+
+ $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.
+ *
+ * @private
+ * @param $revision Revision object
+ * @param $user User object that did the revision
+ * @param $options Array of options, following indexes are used:
+ * - changed: boolean, whether the revision changed the content (default true)
+ * - created: boolean, whether the revision created the page (default false)
+ * - oldcountable: boolean or null (default null):
+ * - boolean: whether the page was counted as an article before that
+ * revision, only used in changed is true and created is false
+ * - null: don't change the article count
+ */
+ public function doEditUpdates( Revision $revision, User $user, array $options = array() ) {
+ global $wgDeferredUpdateList, $wgEnableParserCache;
+
+ wfProfileIn( __METHOD__ );
+
+ $options += array( 'changed' => true, 'created' => false, 'oldcountable' => null );
+ $text = $revision->getText();
+
+ # Parse the text
+ # Be careful not to double-PST: $text is usually already PST-ed once
+ if ( !$this->mPreparedEdit || $this->mPreparedEdit->output->getFlag( 'vary-revision' ) ) {
+ wfDebug( __METHOD__ . ": No prepared edit or vary-revision is set...\n" );
+ $editInfo = $this->prepareTextForEdit( $text, $revision->getId(), $user );
+ } else {
+ wfDebug( __METHOD__ . ": No vary-revision, using prepared edit...\n" );
+ $editInfo = $this->mPreparedEdit;
+ }
+
+ # Save it to the parser cache
+ if ( $wgEnableParserCache ) {
+ $parserCache = ParserCache::singleton();
+ $parserCache->save( $editInfo->output, $this, $editInfo->popts );
+ }
+
+ # Update the links tables
+ $u = new LinksUpdate( $this->mTitle, $editInfo->output );
+ $u->doUpdate();
+
+ wfRunHooks( 'ArticleEditUpdates', array( &$this, &$editInfo, $options['changed'] ) );
+
+ if ( wfRunHooks( 'ArticleEditUpdatesDeleteFromRecentchanges', array( &$this ) ) ) {
+ if ( 0 == mt_rand( 0, 99 ) ) {
+ // Flush old entries from the `recentchanges` table; we do this on
+ // random requests so as to avoid an increase in writes for no good reason
+ global $wgRCMaxAge;
+
+ $dbw = wfGetDB( DB_MASTER );
+ $cutoff = $dbw->timestamp( time() - $wgRCMaxAge );
+ $dbw->delete(
+ 'recentchanges',
+ array( "rc_timestamp < '$cutoff'" ),
+ __METHOD__
+ );
+ }
+ }
+
+ $id = $this->getId();
+ $title = $this->mTitle->getPrefixedDBkey();
+ $shortTitle = $this->mTitle->getDBkey();
+
+ if ( 0 == $id ) {
+ wfProfileOut( __METHOD__ );
+ return;
+ }
+
+ if ( !$options['changed'] ) {
+ $good = 0;
+ $total = 0;
+ } elseif ( $options['created'] ) {
+ $good = (int)$this->isCountable( $editInfo );
+ $total = 1;
+ } elseif ( $options['oldcountable'] !== null ) {
+ $good = (int)$this->isCountable( $editInfo ) - (int)$options['oldcountable'];
+ $total = 0;
+ } else {
+ $good = 0;
+ $total = 0;
+ }
+
+ $wgDeferredUpdateList[] = new SiteStatsUpdate( 0, 1, $good, $total );
+ $wgDeferredUpdateList[] = new SearchUpdate( $id, $title, $text );
+
+ # 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() && $user->isAllowed( 'nominornewtalk' ) )
+ ) {
+ if ( wfRunHooks( 'ArticleEditUpdateNewTalk', array( &$this ) ) ) {
+ $other = User::newFromName( $shortTitle, false );
+ if ( !$other ) {
+ wfDebug( __METHOD__ . ": invalid username\n" );
+ } elseif ( User::isIP( $shortTitle ) ) {
+ // An anonymous user
+ $other->setNewtalk( true );
+ } elseif ( $other->isLoggedIn() ) {
+ $other->setNewtalk( true );
+ } else {
+ wfDebug( __METHOD__ . ": don't need to notify a nonexistent user\n" );
+ }
+ }
+ }
+
+ if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+ MessageCache::singleton()->replace( $shortTitle, $text );
+ }
+
+ if( $options['created'] ) {
+ self::onArticleCreate( $this->mTitle );
+ } else {
+ self::onArticleEdit( $this->mTitle );
+ }
+
+ wfProfileOut( __METHOD__ );
+ }
+
+ /**
+ * Perform article updates on a special page creation.
+ *
+ * @param $rev Revision object
+ *
+ * @todo This is a shitty interface function. Kill it and replace the
+ * other shitty functions like doEditUpdates and such so it's not needed
+ * anymore.
+ * @deprecated since 1.18, use doEditUpdates()
+ */
+ public function createUpdates( $rev ) {
+ global $wgUser;
+ $this->doEditUpdates( $rev, $wgUser, array( 'created' => true ) );
+ }
+
+ /**
+ * This function is called right before saving the wikitext,
+ * so we can do things like signatures and links-in-context.
+ *
+ * @param $text String article contents
+ * @param $user User object: user doing the edit
+ * @param $popts ParserOptions object: parser options, default options for
+ * the user loaded if null given
+ * @return string article contents with altered wikitext markup (signatures
+ * converted, {{subst:}}, templates, etc.)
+ */
+ public function preSaveTransform( $text, User $user = null, ParserOptions $popts = null ) {
+ global $wgParser, $wgUser;
+ $user = is_null( $user ) ? $wgUser : $user;
+
+ if ( $popts === null ) {
+ $popts = ParserOptions::newFromUser( $user );
+ }
+
+ return $wgParser->preSaveTransform( $text, $this->mTitle, $user, $popts );
+ }
+
+ /**
+ * Loads page_touched and returns a value indicating if it should be used
+ * @return boolean true if not a redirect
+ */
+ public function checkTouched() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return !$this->mIsRedirect;
+ }
+
+ /**
+ * Get the page_touched field
+ * @return string containing GMT timestamp
+ */
+ public function getTouched() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return $this->mTouched;
+ }
+
+ /**
+ * Get the page_latest field
+ * @return integer rev_id of current revision
+ */
+ public function getLatest() {
+ if ( !$this->mDataLoaded ) {
+ $this->loadPageData();
+ }
+ return (int)$this->mLatest;
+ }
+
+ /**
+ * Edit an article without doing all that other stuff
+ * The article must already exist; link tables etc
+ * are not updated, caches are not flushed.
+ *
+ * @param $text String: text submitted
+ * @param $user User The relevant user
+ * @param $comment String: comment submitted
+ * @param $minor Boolean: whereas it's a minor modification
+ */
+ public function doQuickEdit( $text, User $user, $comment = '', $minor = 0 ) {
+ wfProfileIn( __METHOD__ );
+
+ $dbw = wfGetDB( DB_MASTER );
+ $revision = new Revision( array(
+ 'page' => $this->getId(),
+ 'text' => $text,
+ 'comment' => $comment,
+ 'minor_edit' => $minor ? 1 : 0,
+ ) );
+ $revision->insertOn( $dbw );
+ $this->updateRevisionOn( $dbw, $revision );
+
+ wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, false, $user ) );
+
+ wfProfileOut( __METHOD__ );
+ }
+
+ /**
+ * 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 object
+ */
+ public static function onArticleCreate( $title ) {
+ # Update existence markers on article/talk tabs...
+ if ( $title->isTalkPage() ) {
+ $other = $title->getSubjectPage();
+ } else {
+ $other = $title->getTalkPage();
+ }
+
+ $other->invalidateCache();
+ $other->purgeSquid();
+
+ $title->touchLinks();
+ $title->purgeSquid();
+ $title->deleteTitleProtection();
+ }
+
+ /**
+ * Clears caches when article is deleted
+ *
+ * @param $title Title
+ */
+ public static function onArticleDelete( $title ) {
+ # Update existence markers on article/talk tabs...
+ if ( $title->isTalkPage() ) {
+ $other = $title->getSubjectPage();
+ } else {
+ $other = $title->getTalkPage();
+ }
+
+ $other->invalidateCache();
+ $other->purgeSquid();
+
+ $title->touchLinks();
+ $title->purgeSquid();
+
+ # File cache
+ HTMLFileCache::clearFileCache( $title );
+
+ # Messages
+ if ( $title->getNamespace() == NS_MEDIAWIKI ) {
+ MessageCache::singleton()->replace( $title->getDBkey(), false );
+ }
+
+ # Images
+ if ( $title->getNamespace() == NS_FILE ) {
+ $update = new HTMLCacheUpdate( $title, 'imagelinks' );
+ $update->doUpdate();
+ }
+
+ # User talk pages
+ if ( $title->getNamespace() == NS_USER_TALK ) {
+ $user = User::newFromName( $title->getText(), false );
+ $user->setNewtalk( false );
+ }
+
+ # Image redirects
+ RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $title );
+ }
+
+ /**
+ * Purge caches on page update etc
+ *
+ * @param $title Title object
+ * @todo: verify that $title is always a Title object (and never false or null), add Title hint to parameter $title
+ */
+ public static function onArticleEdit( $title ) {
+ global $wgDeferredUpdateList;
+
+ // Invalidate caches of articles which include this page
+ $wgDeferredUpdateList[] = new HTMLCacheUpdate( $title, 'templatelinks' );
+
+ // Invalidate the caches of all pages which redirect here
+ $wgDeferredUpdateList[] = new HTMLCacheUpdate( $title, 'redirect' );
+
+ # Purge squid for this page only
+ $title->purgeSquid();
+
+ # Clear file cache for this page only
+ HTMLFileCache::clearFileCache( $title );
+ }
+
+ /**#@-*/
+
+ /**
+ * Return a list of templates used by this article.
+ * Uses the templatelinks table
+ *
+ * @return Array of Title objects
+ */
+ public function getUsedTemplates() {
+ $result = array();
+ $id = $this->mTitle->getArticleID();
+
+ if ( $id == 0 ) {
+ return array();
+ }
+
+ $dbr = wfGetDB( DB_SLAVE );
+ $res = $dbr->select( array( 'templatelinks' ),
+ array( 'tl_namespace', 'tl_title' ),
+ array( 'tl_from' => $id ),
+ __METHOD__ );
+
+ if ( $res !== false ) {
+ foreach ( $res as $row ) {
+ $result[] = Title::makeTitle( $row->tl_namespace, $row->tl_title );
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Returns a list of hidden categories this page is a member of.
+ * Uses the page_props and categorylinks tables.
+ *
+ * @return Array of Title objects
+ */
+ public function getHiddenCategories() {
+ $result = array();
+ $id = $this->mTitle->getArticleID();
+
+ if ( $id == 0 ) {
+ return array();
+ }
+
+ $dbr = wfGetDB( DB_SLAVE );
+ $res = $dbr->select( array( 'categorylinks', 'page_props', 'page' ),
+ array( 'cl_to' ),
+ array( '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;
+ }
+
+ /**
+ * Return an applicable autosummary if one exists for the given edit.
+ * @param $oldtext String: the previous text of the page.
+ * @param $newtext String: The submitted text of the page.
+ * @param $flags Int bitmask: a bitmask of flags submitted for the edit.
+ * @return string An appropriate autosummary, or an empty string.
+ */
+ public static function getAutosummary( $oldtext, $newtext, $flags ) {
+ global $wgContLang;
+
+ # Decide what kind of autosummary is needed.
+
+ # Redirect autosummaries
+ $ot = Title::newFromRedirect( $oldtext );
+ $rt = Title::newFromRedirect( $newtext );
+
+ if ( is_object( $rt ) && ( !is_object( $ot ) || !$rt->equals( $ot ) || $ot->getFragment() != $rt->getFragment() ) ) {
+ $truncatedtext = $wgContLang->truncate(
+ str_replace( "\n", ' ', $newtext ),
+ max( 0, 250
+ - strlen( wfMsgForContent( 'autoredircomment' ) )
+ - strlen( $rt->getFullText() )
+ ) );
+ return wfMsgForContent( 'autoredircomment', $rt->getFullText(), $truncatedtext );
+ }
+
+ # New page autosummaries
+ if ( $flags & EDIT_NEW && strlen( $newtext ) ) {
+ # If they're making a new article, give its text, truncated, in the summary.
+
+ $truncatedtext = $wgContLang->truncate(
+ str_replace( "\n", ' ', $newtext ),
+ max( 0, 200 - strlen( wfMsgForContent( 'autosumm-new' ) ) ) );
+
+ return wfMsgForContent( 'autosumm-new', $truncatedtext );
+ }
+
+ # Blanking autosummaries
+ if ( $oldtext != '' && $newtext == '' ) {
+ return wfMsgForContent( 'autosumm-blank' );
+ } elseif ( strlen( $oldtext ) > 10 * strlen( $newtext ) && strlen( $newtext ) < 500 ) {
+ # Removing more than 90% of the article
+
+ $truncatedtext = $wgContLang->truncate(
+ $newtext,
+ max( 0, 200 - strlen( wfMsgForContent( 'autosumm-replace' ) ) ) );
+
+ return wfMsgForContent( 'autosumm-replace', $truncatedtext );
+ }
+
+ # If we reach this point, there's no applicable autosummary for our case, so our
+ # autosummary is empty.
+ return '';
+ }
+
+ /**
+ * Auto-generates a deletion reason
+ *
+ * @param &$hasHistory Boolean: whether the page has a history
+ * @return mixed String containing deletion reason or empty string, or boolean false
+ * if no revision occurred
+ */
+ public function getAutoDeleteReason( &$hasHistory ) {
+ global $wgContLang;
+
+ $dbw = wfGetDB( DB_MASTER );
+ // Get the last revision
+ $rev = Revision::newFromTitle( $this->getTitle() );
+
+ if ( is_null( $rev ) ) {
+ return false;
+ }
+
+ // Get the article's contents
+ $contents = $rev->getText();
+ $blank = false;
+
+ // If the page is blank, use the text from the previous revision,
+ // which can only be blank if there's a move/import/protect dummy revision involved
+ if ( $contents == '' ) {
+ $prev = $rev->getPrevious();
+
+ if ( $prev ) {
+ $contents = $prev->getText();
+ $blank = true;
+ }
+ }
+
+ // Find out if there was only one contributor
+ // Only scan the last 20 revisions
+ $res = $dbw->select( 'revision', 'rev_user_text',
+ array( 'rev_page' => $this->getID(), $dbw->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' ),
+ __METHOD__,
+ array( 'LIMIT' => 20 )
+ );
+
+ if ( $res === false ) {
+ // This page has no revisions, which is very weird
+ return false;
+ }
+
+ $hasHistory = ( $res->numRows() > 1 );
+ $row = $dbw->fetchObject( $res );
+
+ if ( $row ) { // $row is false if the only contributor is hidden
+ $onlyAuthor = $row->rev_user_text;
+ // Try to find a second contributor
+ foreach ( $res as $row ) {
+ if ( $row->rev_user_text != $onlyAuthor ) { // Bug 22999
+ $onlyAuthor = false;
+ break;
+ }
+ }
+ } else {
+ $onlyAuthor = false;
+ }
+
+ // Generate the summary with a '$1' placeholder
+ if ( $blank ) {
+ // The current revision is blank and the one before is also
+ // blank. It's just not our lucky day
+ $reason = wfMsgForContent( 'exbeforeblank', '$1' );
+ } else {
+ if ( $onlyAuthor ) {
+ $reason = wfMsgForContent( 'excontentauthor', '$1', $onlyAuthor );
+ } else {
+ $reason = wfMsgForContent( 'excontent', '$1' );
+ }
+ }
+
+ if ( $reason == '-' ) {
+ // Allow these UI messages to be blanked out cleanly
+ return '';
+ }
+
+ // Replace newlines with spaces to prevent uglyness
+ $contents = preg_replace( "/[\n\r]/", ' ', $contents );
+ // Calculate the maximum amount of chars to get
+ // Max content length = max comment length - length of the comment (excl. $1)
+ $maxLength = 255 - ( strlen( $reason ) - 2 );
+ $contents = $wgContLang->truncate( $contents, $maxLength );
+ // Remove possible unfinished links
+ $contents = preg_replace( '/\[\[([^\]]*)\]?$/', '$1', $contents );
+ // Now replace the '$1' placeholder
+ $reason = str_replace( '$1', $contents, $reason );
+
+ return $reason;
+ }
+
+ /**
+ * Get parser options suitable for rendering the primary article wikitext
+ * @param $canonical boolean Determines that the generated options must not depend on user preferences (see bug 14404)
+ * @return mixed ParserOptions object or boolean false
+ */
+ public function getParserOptions( $canonical = false ) {
+ global $wgUser, $wgLanguageCode;
+
+ if ( !$this->mParserOptions || $canonical ) {
+ $user = !$canonical ? $wgUser : new User;
+ $parserOptions = new ParserOptions( $user );
+ $parserOptions->setTidy( true );
+ $parserOptions->enableLimitReport();
+
+ if ( $canonical ) {
+ $parserOptions->setUserLang( $wgLanguageCode ); # Must be set explicitely
+ return $parserOptions;
+ }
+ $this->mParserOptions = $parserOptions;
+ }
+ // Clone to allow modifications of the return value without affecting cache
+ return clone $this->mParserOptions;
+ }
+
+ /**
+ * Get parser options suitable for rendering the primary article wikitext
+ * @param User $user
+ * @return ParserOptions
+ */
+ public function makeParserOptions( User $user ) {
+ $options = ParserOptions::newFromUser( $user );
+ $options->enableLimitReport(); // show inclusion/loop reports
+ $options->setTidy( true ); // fix bad HTML
+ return $options;
+ }
+
+ /**
+ * Update all the appropriate counts in the category table, given that
+ * we've added the categories $added and deleted the categories $deleted.
+ *
+ * @param $added array The names of categories that were added
+ * @param $deleted array The names of categories that were deleted
+ */
+ public function updateCategoryCounts( $added, $deleted ) {
+ $ns = $this->mTitle->getNamespace();
+ $dbw = wfGetDB( DB_MASTER );
+
+ # First make sure the rows exist. If one of the "deleted" ones didn't
+ # exist, we might legitimately not create it, but it's simpler to just
+ # create it and then give it a negative value, since the value is bogus
+ # anyway.
+ #
+ # Sometimes I wish we had INSERT ... ON DUPLICATE KEY UPDATE.
+ $insertCats = array_merge( $added, $deleted );
+ if ( !$insertCats ) {
+ # Okay, nothing to do
+ return;
+ }
+
+ $insertRows = array();
+
+ foreach ( $insertCats as $cat ) {
+ $insertRows[] = array(
+ 'cat_id' => $dbw->nextSequenceValue( 'category_cat_id_seq' ),
+ 'cat_title' => $cat
+ );
+ }
+ $dbw->insert( 'category', $insertRows, __METHOD__, 'IGNORE' );
+
+ $addFields = array( 'cat_pages = cat_pages + 1' );
+ $removeFields = array( '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';
+ }
+
+ if ( $added ) {
+ $dbw->update(
+ 'category',
+ $addFields,
+ array( 'cat_title' => $added ),
+ __METHOD__
+ );
+ }
+
+ if ( $deleted ) {
+ $dbw->update(
+ 'category',
+ $removeFields,
+ array( 'cat_title' => $deleted ),
+ __METHOD__
+ );
+ }
+ }
+
+ /**
+ * Updates cascading protections
+ *
+ * @param $parserOutput ParserOutput object for the current version
+ **/
+ public function doCascadeProtectionUpdates( ParserOutput $parserOutput ) {
+ if ( wfReadOnly() || !$this->mTitle->areRestrictionsCascading() ) {
+ return;
+ }
+
+ // templatelinks table may have become out of sync,
+ // especially if using variable-based transclusions.
+ // For paranoia, check if things have changed and if
+ // so apply updates to the database. This will ensure
+ // that cascaded protections apply as soon as the changes
+ // are visible.
+
+ # Get templates from templatelinks
+ $id = $this->mTitle->getArticleID();
+
+ $tlTemplates = array();
+
+ $dbr = wfGetDB( DB_SLAVE );
+ $res = $dbr->select( array( 'templatelinks' ),
+ array( 'tl_namespace', 'tl_title' ),
+ array( 'tl_from' => $id ),
+ __METHOD__
+ );
+
+ foreach ( $res as $row ) {
+ $tlTemplates["{$row->tl_namespace}:{$row->tl_title}"] = true;
+ }
+
+ # Get templates from parser output.
+ $poTemplates = array();
+ foreach ( $parserOutput->getTemplates() as $ns => $templates ) {
+ foreach ( $templates as $dbk => $id ) {
+ $poTemplates["$ns:$dbk"] = true;
+ }
+ }
+
+ # Get the diff
+ $templates_diff = array_diff_key( $poTemplates, $tlTemplates );
+
+ if ( count( $templates_diff ) > 0 ) {
+ # Whee, link updates time.
+ $u = new LinksUpdate( $this->mTitle, $parserOutput, false );
+ $u->doUpdate();
+ }
+ }
+
+ /*
+ * @deprecated since 1.18
+ */
+ public function quickEdit( $text, $comment = '', $minor = 0 ) {
+ global $wgUser;
+ return $this->doQuickEdit( $text, $wgUser, $comment, $minor );
+ }
+
+ /*
+ * @deprecated since 1.18
+ */
+ public function viewUpdates() {
+ global $wgUser;
+ return $this->doViewUpdates( $wgUser );
+ }
+
+ /*
+ * @deprecated since 1.18
+ */
+ public function useParserCache( $oldid ) {
+ global $wgUser;
+ return $this->isParserCacheUsed( $wgUser, $oldid );
+ }
+}