3 * Representation a title within %MediaWiki.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 * http://www.gnu.org/copyleft/gpl.html
26 * Represents a title within MediaWiki.
27 * Optionally may contain an interwiki designation or namespace.
28 * @note This class can fetch various kinds of data from the database;
29 * however, it does so inefficiently.
31 * @internal documentation reviewed 15 Mar 2010
34 /** @name Static cache variables */
36 static private $titleCache = array();
40 * Title::newFromText maintains a cache to avoid expensive re-normalization of
41 * commonly used titles. On a batch operation this can become a memory leak
42 * if not bounded. After hitting this many titles reset the cache.
44 const CACHE_MAX
= 1000;
47 * Used to be GAID_FOR_UPDATE define. Used with getArticleID() and friends
48 * to use the master DB
50 const GAID_FOR_UPDATE
= 1;
53 * @name Private member variables
54 * Please use the accessor functions instead.
59 var $mTextform = ''; // /< Text form (spaces not underscores) of the main part
60 var $mUrlform = ''; // /< URL-encoded form of the main part
61 var $mDbkeyform = ''; // /< Main part with underscores
62 var $mUserCaseDBKey; // /< DB key with the initial letter in the case specified by the user
63 var $mNamespace = NS_MAIN
; // /< Namespace index, i.e. one of the NS_xxxx constants
64 var $mInterwiki = ''; // /< Interwiki prefix (or null string)
65 var $mFragment; // /< Title fragment (i.e. the bit after the #)
66 var $mArticleID = -1; // /< Article ID, fetched from the link cache on demand
67 var $mLatestID = false; // /< ID of most recent revision
68 var $mContentModel = false; // /< ID of the page's content model, i.e. one of the CONTENT_MODEL_XXX constants
69 private $mEstimateRevisions; // /< Estimated number of revisions; null of not loaded
70 var $mRestrictions = array(); // /< Array of groups allowed to edit this article
71 var $mOldRestrictions = false;
72 var $mCascadeRestriction; ///< Cascade restrictions on this page to included templates and images?
73 var $mCascadingRestrictions; // Caching the results of getCascadeProtectionSources
74 var $mRestrictionsExpiry = array(); ///< When do the restrictions on this page expire?
75 var $mHasCascadingRestrictions; ///< Are cascading restrictions in effect on this page?
76 var $mCascadeSources; ///< Where are the cascading restrictions coming from on this page?
77 var $mRestrictionsLoaded = false; ///< Boolean for initialisation on demand
78 var $mPrefixedText; ///< Text form including namespace/interwiki, initialised on demand
79 var $mTitleProtection; ///< Cached value for getTitleProtection (create protection)
80 # Don't change the following default, NS_MAIN is hardcoded in several
81 # places. See bug 696.
82 var $mDefaultNamespace = NS_MAIN
; // /< Namespace index when there is no namespace
83 # Zero except in {{transclusion}} tags
84 var $mWatched = null; // /< Is $wgUser watching this page? null if unfilled, accessed through userIsWatching()
85 var $mLength = -1; // /< The page length, 0 for special pages
86 var $mRedirect = null; // /< Is the article at this title a redirect?
87 var $mNotificationTimestamp = array(); // /< Associative array of user ID -> timestamp/false
88 var $mBacklinkCache = null; // /< Cache of links to this title
89 var $mHasSubpage; // /< Whether a page has any subpages
96 /*protected*/ function __construct() { }
99 * Create a new Title from a prefixed DB key
101 * @param $key String the database key, which has underscores
102 * instead of spaces, possibly including namespace and
104 * @return Title, or NULL on an error
106 public static function newFromDBkey( $key ) {
108 $t->mDbkeyform
= $key;
109 if ( $t->secureAndSplit() ) {
117 * Create a new Title from text, such as what one would find in a link. De-
118 * codes any HTML entities in the text.
120 * @param $text String the link text; spaces, prefixes, and an
121 * initial ':' indicating the main namespace are accepted.
122 * @param $defaultNamespace Int the namespace to use if none is speci-
123 * fied by a prefix. If you want to force a specific namespace even if
124 * $text might begin with a namespace prefix, use makeTitle() or
126 * @throws MWException
127 * @return Title|null - Title or null on an error.
129 public static function newFromText( $text, $defaultNamespace = NS_MAIN
) {
130 if ( is_object( $text ) ) {
131 throw new MWException( 'Title::newFromText given an object' );
135 * Wiki pages often contain multiple links to the same page.
136 * Title normalization and parsing can become expensive on
137 * pages with many links, so we can save a little time by
140 * In theory these are value objects and won't get changed...
142 if ( $defaultNamespace == NS_MAIN
&& isset( Title
::$titleCache[$text] ) ) {
143 return Title
::$titleCache[$text];
146 # Convert things like é ā or 〗 into normalized (bug 14952) text
147 $filteredText = Sanitizer
::decodeCharReferencesAndNormalize( $text );
150 $t->mDbkeyform
= str_replace( ' ', '_', $filteredText );
151 $t->mDefaultNamespace
= $defaultNamespace;
153 static $cachedcount = 0 ;
154 if ( $t->secureAndSplit() ) {
155 if ( $defaultNamespace == NS_MAIN
) {
156 if ( $cachedcount >= self
::CACHE_MAX
) {
157 # Avoid memory leaks on mass operations...
158 Title
::$titleCache = array();
162 Title
::$titleCache[$text] =& $t;
172 * THIS IS NOT THE FUNCTION YOU WANT. Use Title::newFromText().
174 * Example of wrong and broken code:
175 * $title = Title::newFromURL( $wgRequest->getVal( 'title' ) );
177 * Example of right code:
178 * $title = Title::newFromText( $wgRequest->getVal( 'title' ) );
180 * Create a new Title from URL-encoded text. Ensures that
181 * the given title's length does not exceed the maximum.
183 * @param $url String the title, as might be taken from a URL
184 * @return Title the new object, or NULL on an error
186 public static function newFromURL( $url ) {
189 # For compatibility with old buggy URLs. "+" is usually not valid in titles,
190 # but some URLs used it as a space replacement and they still come
191 # from some external search tools.
192 if ( strpos( self
::legalChars(), '+' ) === false ) {
193 $url = str_replace( '+', ' ', $url );
196 $t->mDbkeyform
= str_replace( ' ', '_', $url );
197 if ( $t->secureAndSplit() ) {
205 * Returns a list of fields that are to be selected for initializing Title objects or LinkCache entries.
206 * Uses $wgContentHandlerUseDB to determine whether to include page_content_model.
210 protected static function getSelectFields() {
211 global $wgContentHandlerUseDB;
214 'page_namespace', 'page_title', 'page_id',
215 'page_len', 'page_is_redirect', 'page_latest',
218 if ( $wgContentHandlerUseDB ) {
219 $fields[] = 'page_content_model';
226 * Create a new Title from an article ID
228 * @param $id Int the page_id corresponding to the Title to create
229 * @param $flags Int use Title::GAID_FOR_UPDATE to use master
230 * @return Title the new object, or NULL on an error
232 public static function newFromID( $id, $flags = 0 ) {
233 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
234 $row = $db->selectRow(
236 self
::getSelectFields(),
237 array( 'page_id' => $id ),
240 if ( $row !== false ) {
241 $title = Title
::newFromRow( $row );
249 * Make an array of titles from an array of IDs
251 * @param $ids Array of Int Array of IDs
252 * @return Array of Titles
254 public static function newFromIDs( $ids ) {
255 if ( !count( $ids ) ) {
258 $dbr = wfGetDB( DB_SLAVE
);
262 self
::getSelectFields(),
263 array( 'page_id' => $ids ),
268 foreach ( $res as $row ) {
269 $titles[] = Title
::newFromRow( $row );
275 * Make a Title object from a DB row
277 * @param $row Object database row (needs at least page_title,page_namespace)
278 * @return Title corresponding Title
280 public static function newFromRow( $row ) {
281 $t = self
::makeTitle( $row->page_namespace
, $row->page_title
);
282 $t->loadFromRow( $row );
287 * Load Title object fields from a DB row.
288 * If false is given, the title will be treated as non-existing.
290 * @param $row Object|bool database row
292 public function loadFromRow( $row ) {
293 if ( $row ) { // page found
294 if ( isset( $row->page_id
) )
295 $this->mArticleID
= (int)$row->page_id
;
296 if ( isset( $row->page_len
) )
297 $this->mLength
= (int)$row->page_len
;
298 if ( isset( $row->page_is_redirect
) )
299 $this->mRedirect
= (bool)$row->page_is_redirect
;
300 if ( isset( $row->page_latest
) )
301 $this->mLatestID
= (int)$row->page_latest
;
302 if ( isset( $row->page_content_model
) )
303 $this->mContentModel
= strval( $row->page_content_model
);
305 $this->mContentModel
= false; # initialized lazily in getContentModel()
306 } else { // page not found
307 $this->mArticleID
= 0;
309 $this->mRedirect
= false;
310 $this->mLatestID
= 0;
311 $this->mContentModel
= false; # initialized lazily in getContentModel()
316 * Create a new Title from a namespace index and a DB key.
317 * It's assumed that $ns and $title are *valid*, for instance when
318 * they came directly from the database or a special page name.
319 * For convenience, spaces are converted to underscores so that
320 * eg user_text fields can be used directly.
322 * @param $ns Int the namespace of the article
323 * @param $title String the unprefixed database key form
324 * @param $fragment String the link fragment (after the "#")
325 * @param $interwiki String the interwiki prefix
326 * @return Title the new object
328 public static function &makeTitle( $ns, $title, $fragment = '', $interwiki = '' ) {
330 $t->mInterwiki
= $interwiki;
331 $t->mFragment
= $fragment;
332 $t->mNamespace
= $ns = intval( $ns );
333 $t->mDbkeyform
= str_replace( ' ', '_', $title );
334 $t->mArticleID
= ( $ns >= 0 ) ?
-1 : 0;
335 $t->mUrlform
= wfUrlencode( $t->mDbkeyform
);
336 $t->mTextform
= str_replace( '_', ' ', $title );
337 $t->mContentModel
= false; # initialized lazily in getContentModel()
342 * Create a new Title from a namespace index and a DB key.
343 * The parameters will be checked for validity, which is a bit slower
344 * than makeTitle() but safer for user-provided data.
346 * @param $ns Int the namespace of the article
347 * @param $title String database key form
348 * @param $fragment String the link fragment (after the "#")
349 * @param $interwiki String interwiki prefix
350 * @return Title the new object, or NULL on an error
352 public static function makeTitleSafe( $ns, $title, $fragment = '', $interwiki = '' ) {
353 if ( !MWNamespace
::exists( $ns ) ) {
358 $t->mDbkeyform
= Title
::makeName( $ns, $title, $fragment, $interwiki );
359 if ( $t->secureAndSplit() ) {
367 * Create a new Title for the Main Page
369 * @return Title the new object
371 public static function newMainPage() {
372 $title = Title
::newFromText( wfMsgForContent( 'mainpage' ) );
373 // Don't give fatal errors if the message is broken
375 $title = Title
::newFromText( 'Main Page' );
381 * Extract a redirect destination from a string and return the
382 * Title, or null if the text doesn't contain a valid redirect
383 * This will only return the very next target, useful for
384 * the redirect table and other checks that don't need full recursion
386 * @param $text String: Text with possible redirect
387 * @return Title: The corresponding Title
388 * @deprecated since 1.WD, use Content::getRedirectTarget instead.
390 public static function newFromRedirect( $text ) {
391 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
392 return $content->getRedirectTarget();
396 * Extract a redirect destination from a string and return the
397 * Title, or null if the text doesn't contain a valid redirect
398 * This will recurse down $wgMaxRedirects times or until a non-redirect target is hit
399 * in order to provide (hopefully) the Title of the final destination instead of another redirect
401 * @param $text String Text with possible redirect
403 * @deprecated since 1.WD, use Content::getUltimateRedirectTarget instead.
405 public static function newFromRedirectRecurse( $text ) {
406 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
407 return $content->getUltimateRedirectTarget();
411 * Extract a redirect destination from a string and return an
412 * array of Titles, or null if the text doesn't contain a valid redirect
413 * The last element in the array is the final destination after all redirects
414 * have been resolved (up to $wgMaxRedirects times)
416 * @param $text String Text with possible redirect
417 * @return Array of Titles, with the destination last
418 * @deprecated since 1.WD, use Content::getRedirectChain instead.
420 public static function newFromRedirectArray( $text ) {
421 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
422 return $content->getRedirectChain();
426 * Get the prefixed DB key associated with an ID
428 * @param $id Int the page_id of the article
429 * @return Title an object representing the article, or NULL if no such article was found
431 public static function nameOf( $id ) {
432 $dbr = wfGetDB( DB_SLAVE
);
434 $s = $dbr->selectRow(
436 array( 'page_namespace', 'page_title' ),
437 array( 'page_id' => $id ),
440 if ( $s === false ) {
444 $n = self
::makeName( $s->page_namespace
, $s->page_title
);
449 * Get a regex character class describing the legal characters in a link
451 * @return String the list of characters, not delimited
453 public static function legalChars() {
454 global $wgLegalTitleChars;
455 return $wgLegalTitleChars;
459 * Returns a simple regex that will match on characters and sequences invalid in titles.
460 * Note that this doesn't pick up many things that could be wrong with titles, but that
461 * replacing this regex with something valid will make many titles valid.
463 * @return String regex string
465 static function getTitleInvalidRegex() {
466 static $rxTc = false;
468 # Matching titles will be held as illegal.
470 # Any character not allowed is forbidden...
471 '[^' . self
::legalChars() . ']' .
472 # URL percent encoding sequences interfere with the ability
473 # to round-trip titles -- you can't link to them consistently.
475 # XML/HTML character references produce similar issues.
476 '|&[A-Za-z0-9\x80-\xff]+;' .
478 '|&#x[0-9A-Fa-f]+;' .
486 * Get a string representation of a title suitable for
487 * including in a search index
489 * @param $ns Int a namespace index
490 * @param $title String text-form main part
491 * @return String a stripped-down title string ready for the search index
493 public static function indexTitle( $ns, $title ) {
496 $lc = SearchEngine
::legalSearchChars() . '&#;';
497 $t = $wgContLang->normalizeForSearch( $title );
498 $t = preg_replace( "/[^{$lc}]+/", ' ', $t );
499 $t = $wgContLang->lc( $t );
502 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
503 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
505 $t = preg_replace( "/\\s+/", ' ', $t );
507 if ( $ns == NS_FILE
) {
508 $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
514 * Make a prefixed DB key from a DB key and a namespace index
516 * @param $ns Int numerical representation of the namespace
517 * @param $title String the DB key form the title
518 * @param $fragment String The link fragment (after the "#")
519 * @param $interwiki String The interwiki prefix
520 * @return String the prefixed form of the title
522 public static function makeName( $ns, $title, $fragment = '', $interwiki = '' ) {
525 $namespace = $wgContLang->getNsText( $ns );
526 $name = $namespace == '' ?
$title : "$namespace:$title";
527 if ( strval( $interwiki ) != '' ) {
528 $name = "$interwiki:$name";
530 if ( strval( $fragment ) != '' ) {
531 $name .= '#' . $fragment;
537 * Escape a text fragment, say from a link, for a URL
539 * @param $fragment string containing a URL or link fragment (after the "#")
540 * @return String: escaped string
542 static function escapeFragmentForURL( $fragment ) {
543 # Note that we don't urlencode the fragment. urlencoded Unicode
544 # fragments appear not to work in IE (at least up to 7) or in at least
545 # one version of Opera 9.x. The W3C validator, for one, doesn't seem
546 # to care if they aren't encoded.
547 return Sanitizer
::escapeId( $fragment, 'noninitial' );
551 * Callback for usort() to do title sorts by (namespace, title)
556 * @return Integer: result of string comparison, or namespace comparison
558 public static function compare( $a, $b ) {
559 if ( $a->getNamespace() == $b->getNamespace() ) {
560 return strcmp( $a->getText(), $b->getText() );
562 return $a->getNamespace() - $b->getNamespace();
567 * Determine whether the object refers to a page within
570 * @return Bool TRUE if this is an in-project interwiki link or a wikilink, FALSE otherwise
572 public function isLocal() {
573 if ( $this->mInterwiki
!= '' ) {
574 return Interwiki
::fetch( $this->mInterwiki
)->isLocal();
581 * Is this Title interwiki?
585 public function isExternal() {
586 return ( $this->mInterwiki
!= '' );
590 * Get the interwiki prefix (or null string)
592 * @return String Interwiki prefix
594 public function getInterwiki() {
595 return $this->mInterwiki
;
599 * Determine whether the object refers to a page within
600 * this project and is transcludable.
602 * @return Bool TRUE if this is transcludable
604 public function isTrans() {
605 if ( $this->mInterwiki
== '' ) {
609 return Interwiki
::fetch( $this->mInterwiki
)->isTranscludable();
613 * Returns the DB name of the distant wiki which owns the object.
615 * @return String the DB name
617 public function getTransWikiID() {
618 if ( $this->mInterwiki
== '' ) {
622 return Interwiki
::fetch( $this->mInterwiki
)->getWikiID();
626 * Get the text form (spaces not underscores) of the main part
628 * @return String Main part of the title
630 public function getText() {
631 return $this->mTextform
;
635 * Get the URL-encoded form of the main part
637 * @return String Main part of the title, URL-encoded
639 public function getPartialURL() {
640 return $this->mUrlform
;
644 * Get the main part with underscores
646 * @return String: Main part of the title, with underscores
648 public function getDBkey() {
649 return $this->mDbkeyform
;
653 * Get the DB key with the initial letter case as specified by the user
655 * @return String DB key
657 function getUserCaseDBKey() {
658 return $this->mUserCaseDBKey
;
662 * Get the namespace index, i.e. one of the NS_xxxx constants.
664 * @return Integer: Namespace index
666 public function getNamespace() {
667 return $this->mNamespace
;
671 * Get the page's content model id, see the CONTENT_MODEL_XXX constants.
673 * @return String: Content model id
675 public function getContentModel() {
676 if ( !$this->mContentModel
) {
677 $linkCache = LinkCache
::singleton();
678 $this->mContentModel
= $linkCache->getGoodLinkFieldObj( $this, 'model' );
681 if ( !$this->mContentModel
) {
682 $this->mContentModel
= ContentHandler
::getDefaultModelFor( $this );
685 if( !$this->mContentModel
) {
686 throw new MWException( "failed to determin content model!" );
689 return $this->mContentModel
;
693 * Convenience method for checking a title's content model name
696 * @return Boolean true if $this->getContentModel() == $id
698 public function hasContentModel( $id ) {
699 return $this->getContentModel() == $id;
703 * Get the namespace text
705 * @return String: Namespace text
707 public function getNsText() {
710 if ( $this->mInterwiki
!= '' ) {
711 // This probably shouldn't even happen. ohh man, oh yuck.
712 // But for interwiki transclusion it sometimes does.
713 // Shit. Shit shit shit.
715 // Use the canonical namespaces if possible to try to
716 // resolve a foreign namespace.
717 if ( MWNamespace
::exists( $this->mNamespace
) ) {
718 return MWNamespace
::getCanonicalName( $this->mNamespace
);
722 if ( $wgContLang->needsGenderDistinction() &&
723 MWNamespace
::hasGenderDistinction( $this->mNamespace
) ) {
724 $gender = GenderCache
::singleton()->getGenderOf( $this->getText(), __METHOD__
);
725 return $wgContLang->getGenderNsText( $this->mNamespace
, $gender );
728 return $wgContLang->getNsText( $this->mNamespace
);
732 * Get the namespace text of the subject (rather than talk) page
734 * @return String Namespace text
736 public function getSubjectNsText() {
738 return $wgContLang->getNsText( MWNamespace
::getSubject( $this->mNamespace
) );
742 * Get the namespace text of the talk page
744 * @return String Namespace text
746 public function getTalkNsText() {
748 return( $wgContLang->getNsText( MWNamespace
::getTalk( $this->mNamespace
) ) );
752 * Could this title have a corresponding talk page?
754 * @return Bool TRUE or FALSE
756 public function canTalk() {
757 return( MWNamespace
::canTalk( $this->mNamespace
) );
761 * Is this in a namespace that allows actual pages?
764 * @internal note -- uses hardcoded namespace index instead of constants
766 public function canExist() {
767 return $this->mNamespace
>= NS_MAIN
;
771 * Can this title be added to a user's watchlist?
773 * @return Bool TRUE or FALSE
775 public function isWatchable() {
776 return !$this->isExternal() && MWNamespace
::isWatchable( $this->getNamespace() );
780 * Returns true if this is a special page.
784 public function isSpecialPage() {
785 return $this->getNamespace() == NS_SPECIAL
;
789 * Returns true if this title resolves to the named special page
791 * @param $name String The special page name
794 public function isSpecial( $name ) {
795 if ( $this->isSpecialPage() ) {
796 list( $thisName, /* $subpage */ ) = SpecialPageFactory
::resolveAlias( $this->getDBkey() );
797 if ( $name == $thisName ) {
805 * If the Title refers to a special page alias which is not the local default, resolve
806 * the alias, and localise the name as necessary. Otherwise, return $this
810 public function fixSpecialName() {
811 if ( $this->isSpecialPage() ) {
812 list( $canonicalName, $par ) = SpecialPageFactory
::resolveAlias( $this->mDbkeyform
);
813 if ( $canonicalName ) {
814 $localName = SpecialPageFactory
::getLocalNameFor( $canonicalName, $par );
815 if ( $localName != $this->mDbkeyform
) {
816 return Title
::makeTitle( NS_SPECIAL
, $localName );
824 * Returns true if the title is inside the specified namespace.
826 * Please make use of this instead of comparing to getNamespace()
827 * This function is much more resistant to changes we may make
828 * to namespaces than code that makes direct comparisons.
829 * @param $ns int The namespace
833 public function inNamespace( $ns ) {
834 return MWNamespace
::equals( $this->getNamespace(), $ns );
838 * Returns true if the title is inside one of the specified namespaces.
840 * @param ...$namespaces The namespaces to check for
844 public function inNamespaces( /* ... */ ) {
845 $namespaces = func_get_args();
846 if ( count( $namespaces ) > 0 && is_array( $namespaces[0] ) ) {
847 $namespaces = $namespaces[0];
850 foreach ( $namespaces as $ns ) {
851 if ( $this->inNamespace( $ns ) ) {
860 * Returns true if the title has the same subject namespace as the
861 * namespace specified.
862 * For example this method will take NS_USER and return true if namespace
863 * is either NS_USER or NS_USER_TALK since both of them have NS_USER
864 * as their subject namespace.
866 * This is MUCH simpler than individually testing for equivilance
867 * against both NS_USER and NS_USER_TALK, and is also forward compatible.
872 public function hasSubjectNamespace( $ns ) {
873 return MWNamespace
::subjectEquals( $this->getNamespace(), $ns );
877 * Is this Title in a namespace which contains content?
878 * In other words, is this a content page, for the purposes of calculating
883 public function isContentPage() {
884 return MWNamespace
::isContent( $this->getNamespace() );
888 * Would anybody with sufficient privileges be able to move this page?
889 * Some pages just aren't movable.
891 * @return Bool TRUE or FALSE
893 public function isMovable() {
894 if ( !MWNamespace
::isMovable( $this->getNamespace() ) ||
$this->getInterwiki() != '' ) {
895 // Interwiki title or immovable namespace. Hooks don't get to override here
900 wfRunHooks( 'TitleIsMovable', array( $this, &$result ) );
905 * Is this the mainpage?
906 * @note Title::newFromText seams to be sufficiently optimized by the title
907 * cache that we don't need to over-optimize by doing direct comparisons and
908 * acidentally creating new bugs where $title->equals( Title::newFromText() )
909 * ends up reporting something differently than $title->isMainPage();
914 public function isMainPage() {
915 return $this->equals( Title
::newMainPage() );
923 public function isSubpage() {
924 return MWNamespace
::hasSubpages( $this->mNamespace
)
925 ?
strpos( $this->getText(), '/' ) !== false
930 * Is this a conversion table for the LanguageConverter?
934 public function isConversionTable() {
935 return $this->getNamespace() == NS_MEDIAWIKI
&&
936 strpos( $this->getText(), 'Conversiontable/' ) === 0;
940 * Does that page contain wikitext, or it is JS, CSS or whatever?
944 public function isWikitextPage() {
945 return $this->hasContentModel( CONTENT_MODEL_WIKITEXT
);
949 * Could this page contain custom CSS or JavaScript for the global UI.
950 * This is generally true for pages in the MediaWiki namespace having CONTENT_MODEL_CSS
951 * or CONTENT_MODEL_JAVASCRIPT.
953 * This method does *not* return true for per-user JS/CSS. Use isCssJsSubpage() for that!
955 * Note that this method should not return true for pages that contain and show "inactive" CSS or JS.
959 public function isCssOrJsPage() {
960 $isCssOrJsPage = NS_MEDIAWIKI
== $this->mNamespace
961 && ( $this->hasContentModel( CONTENT_MODEL_CSS
)
962 ||
$this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) );
964 #NOTE: this hook is also called in ContentHandler::getDefaultModel. It's called here again to make sure
965 # hook funktions can force this method to return true even outside the mediawiki namespace.
967 wfRunHooks( 'TitleIsCssOrJsPage', array( $this, &$isCssOrJsPage ) );
969 return $isCssOrJsPage;
973 * Is this a .css or .js subpage of a user page?
976 public function isCssJsSubpage() {
977 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
978 && ( $this->hasContentModel( CONTENT_MODEL_CSS
)
979 ||
$this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) ) );
983 * Trim down a .css or .js subpage title to get the corresponding skin name
985 * @return string containing skin name from .css or .js subpage title
987 public function getSkinFromCssJsSubpage() {
988 $subpage = explode( '/', $this->mTextform
);
989 $subpage = $subpage[ count( $subpage ) - 1 ];
990 $lastdot = strrpos( $subpage, '.' );
991 if ( $lastdot === false )
992 return $subpage; # Never happens: only called for names ending in '.css' or '.js'
993 return substr( $subpage, 0, $lastdot );
997 * Is this a .css subpage of a user page?
1001 public function isCssSubpage() {
1002 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
1003 && $this->hasContentModel( CONTENT_MODEL_CSS
) );
1007 * Is this a .js subpage of a user page?
1011 public function isJsSubpage() {
1012 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
1013 && $this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) );
1017 * Is this a talk page of some sort?
1021 public function isTalkPage() {
1022 return MWNamespace
::isTalk( $this->getNamespace() );
1026 * Get a Title object associated with the talk page of this article
1028 * @return Title the object for the talk page
1030 public function getTalkPage() {
1031 return Title
::makeTitle( MWNamespace
::getTalk( $this->getNamespace() ), $this->getDBkey() );
1035 * Get a title object associated with the subject page of this
1038 * @return Title the object for the subject page
1040 public function getSubjectPage() {
1041 // Is this the same title?
1042 $subjectNS = MWNamespace
::getSubject( $this->getNamespace() );
1043 if ( $this->getNamespace() == $subjectNS ) {
1046 return Title
::makeTitle( $subjectNS, $this->getDBkey() );
1050 * Get the default namespace index, for when there is no namespace
1052 * @return Int Default namespace index
1054 public function getDefaultNamespace() {
1055 return $this->mDefaultNamespace
;
1059 * Get title for search index
1061 * @return String a stripped-down title string ready for the
1064 public function getIndexTitle() {
1065 return Title
::indexTitle( $this->mNamespace
, $this->mTextform
);
1069 * Get the Title fragment (i.e.\ the bit after the #) in text form
1071 * @return String Title fragment
1073 public function getFragment() {
1074 return $this->mFragment
;
1078 * Get the fragment in URL form, including the "#" character if there is one
1079 * @return String Fragment in URL form
1081 public function getFragmentForURL() {
1082 if ( $this->mFragment
== '' ) {
1085 return '#' . Title
::escapeFragmentForURL( $this->mFragment
);
1090 * Set the fragment for this title. Removes the first character from the
1091 * specified fragment before setting, so it assumes you're passing it with
1094 * Deprecated for public use, use Title::makeTitle() with fragment parameter.
1095 * Still in active use privately.
1097 * @param $fragment String text
1099 public function setFragment( $fragment ) {
1100 $this->mFragment
= str_replace( '_', ' ', substr( $fragment, 1 ) );
1104 * Prefix some arbitrary text with the namespace or interwiki prefix
1107 * @param $name String the text
1108 * @return String the prefixed text
1111 private function prefix( $name ) {
1113 if ( $this->mInterwiki
!= '' ) {
1114 $p = $this->mInterwiki
. ':';
1117 if ( 0 != $this->mNamespace
) {
1118 $p .= $this->getNsText() . ':';
1124 * Get the prefixed database key form
1126 * @return String the prefixed title, with underscores and
1127 * any interwiki and namespace prefixes
1129 public function getPrefixedDBkey() {
1130 $s = $this->prefix( $this->mDbkeyform
);
1131 $s = str_replace( ' ', '_', $s );
1136 * Get the prefixed title with spaces.
1137 * This is the form usually used for display
1139 * @return String the prefixed title, with spaces
1141 public function getPrefixedText() {
1142 // @todo FIXME: Bad usage of empty() ?
1143 if ( empty( $this->mPrefixedText
) ) {
1144 $s = $this->prefix( $this->mTextform
);
1145 $s = str_replace( '_', ' ', $s );
1146 $this->mPrefixedText
= $s;
1148 return $this->mPrefixedText
;
1152 * Return a string representation of this title
1154 * @return String representation of this title
1156 public function __toString() {
1157 return $this->getPrefixedText();
1161 * Get the prefixed title with spaces, plus any fragment
1162 * (part beginning with '#')
1164 * @return String the prefixed title, with spaces and the fragment, including '#'
1166 public function getFullText() {
1167 $text = $this->getPrefixedText();
1168 if ( $this->mFragment
!= '' ) {
1169 $text .= '#' . $this->mFragment
;
1175 * Get the base page name, i.e. the leftmost part before any slashes
1177 * @return String Base name
1179 public function getBaseText() {
1180 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1181 return $this->getText();
1184 $parts = explode( '/', $this->getText() );
1185 # Don't discard the real title if there's no subpage involved
1186 if ( count( $parts ) > 1 ) {
1187 unset( $parts[count( $parts ) - 1] );
1189 return implode( '/', $parts );
1193 * Get the lowest-level subpage name, i.e. the rightmost part after any slashes
1195 * @return String Subpage name
1197 public function getSubpageText() {
1198 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1199 return( $this->mTextform
);
1201 $parts = explode( '/', $this->mTextform
);
1202 return( $parts[count( $parts ) - 1] );
1206 * Get the HTML-escaped displayable text form.
1207 * Used for the title field in <a> tags.
1209 * @return String the text, including any prefixes
1211 public function getEscapedText() {
1212 wfDeprecated( __METHOD__
, '1.19' );
1213 return htmlspecialchars( $this->getPrefixedText() );
1217 * Get a URL-encoded form of the subpage text
1219 * @return String URL-encoded subpage name
1221 public function getSubpageUrlForm() {
1222 $text = $this->getSubpageText();
1223 $text = wfUrlencode( str_replace( ' ', '_', $text ) );
1228 * Get a URL-encoded title (not an actual URL) including interwiki
1230 * @return String the URL-encoded form
1232 public function getPrefixedURL() {
1233 $s = $this->prefix( $this->mDbkeyform
);
1234 $s = wfUrlencode( str_replace( ' ', '_', $s ) );
1239 * Helper to fix up the get{Local,Full,Link,Canonical}URL args
1240 * get{Canonical,Full,Link,Local}URL methods accepted an optional
1241 * second argument named variant. This was deprecated in favor
1242 * of passing an array of option with a "variant" key
1243 * Once $query2 is removed for good, this helper can be dropped
1244 * andthe wfArrayToCGI moved to getLocalURL();
1246 * @since 1.19 (r105919)
1248 * @param $query2 bool
1251 private static function fixUrlQueryArgs( $query, $query2 = false ) {
1252 if( $query2 !== false ) {
1253 wfDeprecated( "Title::get{Canonical,Full,Link,Local} method called with a second parameter is deprecated. Add your parameter to an array passed as the first parameter.", "1.19" );
1255 if ( is_array( $query ) ) {
1256 $query = wfArrayToCGI( $query );
1259 if ( is_string( $query2 ) ) {
1260 // $query2 is a string, we will consider this to be
1261 // a deprecated $variant argument and add it to the query
1262 $query2 = wfArrayToCGI( array( 'variant' => $query2 ) );
1264 $query2 = wfArrayToCGI( $query2 );
1266 // If we have $query content add a & to it first
1270 // Now append the queries together
1277 * Get a real URL referring to this title, with interwiki link and
1280 * See getLocalURL for the arguments.
1282 * @see self::getLocalURL
1283 * @return String the URL
1285 public function getFullURL( $query = '', $query2 = false ) {
1286 $query = self
::fixUrlQueryArgs( $query, $query2 );
1288 # Hand off all the decisions on urls to getLocalURL
1289 $url = $this->getLocalURL( $query );
1291 # Expand the url to make it a full url. Note that getLocalURL has the
1292 # potential to output full urls for a variety of reasons, so we use
1293 # wfExpandUrl instead of simply prepending $wgServer
1294 $url = wfExpandUrl( $url, PROTO_RELATIVE
);
1296 # Finally, add the fragment.
1297 $url .= $this->getFragmentForURL();
1299 wfRunHooks( 'GetFullURL', array( &$this, &$url, $query ) );
1304 * Get a URL with no fragment or server name. If this page is generated
1305 * with action=render, $wgServer is prepended.
1308 * @param $query string|array an optional query string,
1309 * not used for interwiki links. Can be specified as an associative array as well,
1310 * e.g., array( 'action' => 'edit' ) (keys and values will be URL-escaped).
1311 * Some query patterns will trigger various shorturl path replacements.
1312 * @param $query2 Mixed: An optional secondary query array. This one MUST
1313 * be an array. If a string is passed it will be interpreted as a deprecated
1314 * variant argument and urlencoded into a variant= argument.
1315 * This second query argument will be added to the $query
1316 * The second parameter is deprecated since 1.19. Pass it as a key,value
1317 * pair in the first parameter array instead.
1319 * @return String the URL
1321 public function getLocalURL( $query = '', $query2 = false ) {
1322 global $wgArticlePath, $wgScript, $wgServer, $wgRequest;
1324 $query = self
::fixUrlQueryArgs( $query, $query2 );
1326 $interwiki = Interwiki
::fetch( $this->mInterwiki
);
1328 $namespace = $this->getNsText();
1329 if ( $namespace != '' ) {
1330 # Can this actually happen? Interwikis shouldn't be parsed.
1331 # Yes! It can in interwiki transclusion. But... it probably shouldn't.
1334 $url = $interwiki->getURL( $namespace . $this->getDBkey() );
1335 $url = wfAppendQuery( $url, $query );
1337 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
1338 if ( $query == '' ) {
1339 $url = str_replace( '$1', $dbkey, $wgArticlePath );
1340 wfRunHooks( 'GetLocalURL::Article', array( &$this, &$url ) );
1342 global $wgVariantArticlePath, $wgActionPaths;
1346 if ( !empty( $wgActionPaths ) &&
1347 preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) )
1349 $action = urldecode( $matches[2] );
1350 if ( isset( $wgActionPaths[$action] ) ) {
1351 $query = $matches[1];
1352 if ( isset( $matches[4] ) ) {
1353 $query .= $matches[4];
1355 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
1356 if ( $query != '' ) {
1357 $url = wfAppendQuery( $url, $query );
1362 if ( $url === false &&
1363 $wgVariantArticlePath &&
1364 $this->getPageLanguage()->hasVariants() &&
1365 preg_match( '/^variant=([^&]*)$/', $query, $matches ) )
1367 $variant = urldecode( $matches[1] );
1368 if ( $this->getPageLanguage()->hasVariant( $variant ) ) {
1369 // Only do the variant replacement if the given variant is a valid
1370 // variant for the page's language.
1371 $url = str_replace( '$2', urlencode( $variant ), $wgVariantArticlePath );
1372 $url = str_replace( '$1', $dbkey, $url );
1376 if ( $url === false ) {
1377 if ( $query == '-' ) {
1380 $url = "{$wgScript}?title={$dbkey}&{$query}";
1384 wfRunHooks( 'GetLocalURL::Internal', array( &$this, &$url, $query ) );
1386 // @todo FIXME: This causes breakage in various places when we
1387 // actually expected a local URL and end up with dupe prefixes.
1388 if ( $wgRequest->getVal( 'action' ) == 'render' ) {
1389 $url = $wgServer . $url;
1392 wfRunHooks( 'GetLocalURL', array( &$this, &$url, $query ) );
1397 * Get a URL that's the simplest URL that will be valid to link, locally,
1398 * to the current Title. It includes the fragment, but does not include
1399 * the server unless action=render is used (or the link is external). If
1400 * there's a fragment but the prefixed text is empty, we just return a link
1403 * The result obviously should not be URL-escaped, but does need to be
1404 * HTML-escaped if it's being output in HTML.
1406 * See getLocalURL for the arguments.
1408 * @see self::getLocalURL
1409 * @return String the URL
1411 public function getLinkURL( $query = '', $query2 = false ) {
1412 wfProfileIn( __METHOD__
);
1413 if ( $this->isExternal() ) {
1414 $ret = $this->getFullURL( $query, $query2 );
1415 } elseif ( $this->getPrefixedText() === '' && $this->getFragment() !== '' ) {
1416 $ret = $this->getFragmentForURL();
1418 $ret = $this->getLocalURL( $query, $query2 ) . $this->getFragmentForURL();
1420 wfProfileOut( __METHOD__
);
1425 * Get an HTML-escaped version of the URL form, suitable for
1426 * using in a link, without a server name or fragment
1428 * See getLocalURL for the arguments.
1430 * @see self::getLocalURL
1431 * @param $query string
1432 * @param $query2 bool|string
1433 * @return String the URL
1435 public function escapeLocalURL( $query = '', $query2 = false ) {
1436 wfDeprecated( __METHOD__
, '1.19' );
1437 return htmlspecialchars( $this->getLocalURL( $query, $query2 ) );
1441 * Get an HTML-escaped version of the URL form, suitable for
1442 * using in a link, including the server name and fragment
1444 * See getLocalURL for the arguments.
1446 * @see self::getLocalURL
1447 * @return String the URL
1449 public function escapeFullURL( $query = '', $query2 = false ) {
1450 wfDeprecated( __METHOD__
, '1.19' );
1451 return htmlspecialchars( $this->getFullURL( $query, $query2 ) );
1455 * Get the URL form for an internal link.
1456 * - Used in various Squid-related code, in case we have a different
1457 * internal hostname for the server from the exposed one.
1459 * This uses $wgInternalServer to qualify the path, or $wgServer
1460 * if $wgInternalServer is not set. If the server variable used is
1461 * protocol-relative, the URL will be expanded to http://
1463 * See getLocalURL for the arguments.
1465 * @see self::getLocalURL
1466 * @return String the URL
1468 public function getInternalURL( $query = '', $query2 = false ) {
1469 global $wgInternalServer, $wgServer;
1470 $query = self
::fixUrlQueryArgs( $query, $query2 );
1471 $server = $wgInternalServer !== false ?
$wgInternalServer : $wgServer;
1472 $url = wfExpandUrl( $server . $this->getLocalURL( $query ), PROTO_HTTP
);
1473 wfRunHooks( 'GetInternalURL', array( &$this, &$url, $query ) );
1478 * Get the URL for a canonical link, for use in things like IRC and
1479 * e-mail notifications. Uses $wgCanonicalServer and the
1480 * GetCanonicalURL hook.
1482 * NOTE: Unlike getInternalURL(), the canonical URL includes the fragment
1484 * See getLocalURL for the arguments.
1486 * @see self::getLocalURL
1487 * @return string The URL
1490 public function getCanonicalURL( $query = '', $query2 = false ) {
1491 $query = self
::fixUrlQueryArgs( $query, $query2 );
1492 $url = wfExpandUrl( $this->getLocalURL( $query ) . $this->getFragmentForURL(), PROTO_CANONICAL
);
1493 wfRunHooks( 'GetCanonicalURL', array( &$this, &$url, $query ) );
1498 * HTML-escaped version of getCanonicalURL()
1500 * See getLocalURL for the arguments.
1502 * @see self::getLocalURL
1506 public function escapeCanonicalURL( $query = '', $query2 = false ) {
1507 wfDeprecated( __METHOD__
, '1.19' );
1508 return htmlspecialchars( $this->getCanonicalURL( $query, $query2 ) );
1512 * Get the edit URL for this Title
1514 * @return String the URL, or a null string if this is an
1517 public function getEditURL() {
1518 if ( $this->mInterwiki
!= '' ) {
1521 $s = $this->getLocalURL( 'action=edit' );
1527 * Is $wgUser watching this page?
1529 * @deprecated in 1.20; use User::isWatched() instead.
1532 public function userIsWatching() {
1535 if ( is_null( $this->mWatched
) ) {
1536 if ( NS_SPECIAL
== $this->mNamespace ||
!$wgUser->isLoggedIn() ) {
1537 $this->mWatched
= false;
1539 $this->mWatched
= $wgUser->isWatched( $this );
1542 return $this->mWatched
;
1546 * Can $wgUser read this page?
1548 * @deprecated in 1.19; use userCan(), quickUserCan() or getUserPermissionsErrors() instead
1550 * @todo fold these checks into userCan()
1552 public function userCanRead() {
1553 wfDeprecated( __METHOD__
, '1.19' );
1554 return $this->userCan( 'read' );
1558 * Can $user perform $action on this page?
1559 * This skips potentially expensive cascading permission checks
1560 * as well as avoids expensive error formatting
1562 * Suitable for use for nonessential UI controls in common cases, but
1563 * _not_ for functional access control.
1565 * May provide false positives, but should never provide a false negative.
1567 * @param $action String action that permission needs to be checked for
1568 * @param $user User to check (since 1.19); $wgUser will be used if not
1572 public function quickUserCan( $action, $user = null ) {
1573 return $this->userCan( $action, $user, false );
1577 * Can $user perform $action on this page?
1579 * @param $action String action that permission needs to be checked for
1580 * @param $user User to check (since 1.19); $wgUser will be used if not
1582 * @param $doExpensiveQueries Bool Set this to false to avoid doing
1583 * unnecessary queries.
1586 public function userCan( $action, $user = null, $doExpensiveQueries = true ) {
1587 if ( !$user instanceof User
) {
1591 return !count( $this->getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries, true ) );
1595 * Can $user perform $action on this page?
1597 * @todo FIXME: This *does not* check throttles (User::pingLimiter()).
1599 * @param $action String action that permission needs to be checked for
1600 * @param $user User to check
1601 * @param $doExpensiveQueries Bool Set this to false to avoid doing unnecessary
1602 * queries by skipping checks for cascading protections and user blocks.
1603 * @param $ignoreErrors Array of Strings Set this to a list of message keys
1604 * whose corresponding errors may be ignored.
1605 * @return Array of arguments to wfMsg to explain permissions problems.
1607 public function getUserPermissionsErrors( $action, $user, $doExpensiveQueries = true, $ignoreErrors = array() ) {
1608 $errors = $this->getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries );
1610 // Remove the errors being ignored.
1611 foreach ( $errors as $index => $error ) {
1612 $error_key = is_array( $error ) ?
$error[0] : $error;
1614 if ( in_array( $error_key, $ignoreErrors ) ) {
1615 unset( $errors[$index] );
1623 * Permissions checks that fail most often, and which are easiest to test.
1625 * @param $action String the action to check
1626 * @param $user User user to check
1627 * @param $errors Array list of current errors
1628 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1629 * @param $short Boolean short circuit on first error
1631 * @return Array list of errors
1633 private function checkQuickPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1634 if ( $action == 'create' ) {
1635 if ( ( $this->isTalkPage() && !$user->isAllowed( 'createtalk' ) ) ||
1636 ( !$this->isTalkPage() && !$user->isAllowed( 'createpage' ) ) ) {
1637 $errors[] = $user->isAnon() ?
array( 'nocreatetext' ) : array( 'nocreate-loggedin' );
1639 } elseif ( $action == 'move' ) {
1640 if ( !$user->isAllowed( 'move-rootuserpages' )
1641 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1642 // Show user page-specific message only if the user can move other pages
1643 $errors[] = array( 'cant-move-user-page' );
1646 // Check if user is allowed to move files if it's a file
1647 if ( $this->mNamespace
== NS_FILE
&& !$user->isAllowed( 'movefile' ) ) {
1648 $errors[] = array( 'movenotallowedfile' );
1651 if ( !$user->isAllowed( 'move' ) ) {
1652 // User can't move anything
1653 global $wgGroupPermissions;
1654 $userCanMove = false;
1655 if ( isset( $wgGroupPermissions['user']['move'] ) ) {
1656 $userCanMove = $wgGroupPermissions['user']['move'];
1658 $autoconfirmedCanMove = false;
1659 if ( isset( $wgGroupPermissions['autoconfirmed']['move'] ) ) {
1660 $autoconfirmedCanMove = $wgGroupPermissions['autoconfirmed']['move'];
1662 if ( $user->isAnon() && ( $userCanMove ||
$autoconfirmedCanMove ) ) {
1663 // custom message if logged-in users without any special rights can move
1664 $errors[] = array( 'movenologintext' );
1666 $errors[] = array( 'movenotallowed' );
1669 } elseif ( $action == 'move-target' ) {
1670 if ( !$user->isAllowed( 'move' ) ) {
1671 // User can't move anything
1672 $errors[] = array( 'movenotallowed' );
1673 } elseif ( !$user->isAllowed( 'move-rootuserpages' )
1674 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1675 // Show user page-specific message only if the user can move other pages
1676 $errors[] = array( 'cant-move-to-user-page' );
1678 } elseif ( !$user->isAllowed( $action ) ) {
1679 $errors[] = $this->missingPermissionError( $action, $short );
1686 * Add the resulting error code to the errors array
1688 * @param $errors Array list of current errors
1689 * @param $result Mixed result of errors
1691 * @return Array list of errors
1693 private function resultToError( $errors, $result ) {
1694 if ( is_array( $result ) && count( $result ) && !is_array( $result[0] ) ) {
1695 // A single array representing an error
1696 $errors[] = $result;
1697 } elseif ( is_array( $result ) && is_array( $result[0] ) ) {
1698 // A nested array representing multiple errors
1699 $errors = array_merge( $errors, $result );
1700 } elseif ( $result !== '' && is_string( $result ) ) {
1701 // A string representing a message-id
1702 $errors[] = array( $result );
1703 } elseif ( $result === false ) {
1704 // a generic "We don't want them to do that"
1705 $errors[] = array( 'badaccess-group0' );
1711 * Check various permission hooks
1713 * @param $action String the action to check
1714 * @param $user User user to check
1715 * @param $errors Array list of current errors
1716 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1717 * @param $short Boolean short circuit on first error
1719 * @return Array list of errors
1721 private function checkPermissionHooks( $action, $user, $errors, $doExpensiveQueries, $short ) {
1722 // Use getUserPermissionsErrors instead
1724 if ( !wfRunHooks( 'userCan', array( &$this, &$user, $action, &$result ) ) ) {
1725 return $result ?
array() : array( array( 'badaccess-group0' ) );
1727 // Check getUserPermissionsErrors hook
1728 if ( !wfRunHooks( 'getUserPermissionsErrors', array( &$this, &$user, $action, &$result ) ) ) {
1729 $errors = $this->resultToError( $errors, $result );
1731 // Check getUserPermissionsErrorsExpensive hook
1732 if ( $doExpensiveQueries && !( $short && count( $errors ) > 0 ) &&
1733 !wfRunHooks( 'getUserPermissionsErrorsExpensive', array( &$this, &$user, $action, &$result ) ) ) {
1734 $errors = $this->resultToError( $errors, $result );
1741 * Check permissions on special pages & namespaces
1743 * @param $action String the action to check
1744 * @param $user User user to check
1745 * @param $errors Array list of current errors
1746 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1747 * @param $short Boolean short circuit on first error
1749 * @return Array list of errors
1751 private function checkSpecialsAndNSPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1752 # Only 'createaccount' and 'execute' can be performed on
1753 # special pages, which don't actually exist in the DB.
1754 $specialOKActions = array( 'createaccount', 'execute', 'read' );
1755 if ( NS_SPECIAL
== $this->mNamespace
&& !in_array( $action, $specialOKActions ) ) {
1756 $errors[] = array( 'ns-specialprotected' );
1759 # Check $wgNamespaceProtection for restricted namespaces
1760 if ( $this->isNamespaceProtected( $user ) ) {
1761 $ns = $this->mNamespace
== NS_MAIN ?
1762 wfMsg( 'nstab-main' ) : $this->getNsText();
1763 $errors[] = $this->mNamespace
== NS_MEDIAWIKI ?
1764 array( 'protectedinterface' ) : array( 'namespaceprotected', $ns );
1771 * Check CSS/JS sub-page permissions
1773 * @param $action String the action to check
1774 * @param $user User user to check
1775 * @param $errors Array list of current errors
1776 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1777 * @param $short Boolean short circuit on first error
1779 * @return Array list of errors
1781 private function checkCSSandJSPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1782 # Protect css/js subpages of user pages
1783 # XXX: this might be better using restrictions
1784 # XXX: right 'editusercssjs' is deprecated, for backward compatibility only
1785 if ( $action != 'patrol' && !$user->isAllowed( 'editusercssjs' )
1786 && !preg_match( '/^' . preg_quote( $user->getName(), '/' ) . '\//', $this->mTextform
) ) {
1787 if ( $this->isCssSubpage() && !$user->isAllowed( 'editusercss' ) ) {
1788 $errors[] = array( 'customcssprotected' );
1789 } elseif ( $this->isJsSubpage() && !$user->isAllowed( 'edituserjs' ) ) {
1790 $errors[] = array( 'customjsprotected' );
1798 * Check against page_restrictions table requirements on this
1799 * page. The user must possess all required rights for this
1802 * @param $action String the action to check
1803 * @param $user User user to check
1804 * @param $errors Array list of current errors
1805 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1806 * @param $short Boolean short circuit on first error
1808 * @return Array list of errors
1810 private function checkPageRestrictions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1811 foreach ( $this->getRestrictions( $action ) as $right ) {
1812 // Backwards compatibility, rewrite sysop -> protect
1813 if ( $right == 'sysop' ) {
1816 if ( $right != '' && !$user->isAllowed( $right ) ) {
1817 // Users with 'editprotected' permission can edit protected pages
1818 // without cascading option turned on.
1819 if ( $action != 'edit' ||
!$user->isAllowed( 'editprotected' )
1820 ||
$this->mCascadeRestriction
)
1822 $errors[] = array( 'protectedpagetext', $right );
1831 * Check restrictions on cascading pages.
1833 * @param $action String the action to check
1834 * @param $user User to check
1835 * @param $errors Array list of current errors
1836 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1837 * @param $short Boolean short circuit on first error
1839 * @return Array list of errors
1841 private function checkCascadingSourcesRestrictions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1842 if ( $doExpensiveQueries && !$this->isCssJsSubpage() ) {
1843 # We /could/ use the protection level on the source page, but it's
1844 # fairly ugly as we have to establish a precedence hierarchy for pages
1845 # included by multiple cascade-protected pages. So just restrict
1846 # it to people with 'protect' permission, as they could remove the
1847 # protection anyway.
1848 list( $cascadingSources, $restrictions ) = $this->getCascadeProtectionSources();
1849 # Cascading protection depends on more than this page...
1850 # Several cascading protected pages may include this page...
1851 # Check each cascading level
1852 # This is only for protection restrictions, not for all actions
1853 if ( isset( $restrictions[$action] ) ) {
1854 foreach ( $restrictions[$action] as $right ) {
1855 $right = ( $right == 'sysop' ) ?
'protect' : $right;
1856 if ( $right != '' && !$user->isAllowed( $right ) ) {
1858 foreach ( $cascadingSources as $page )
1859 $pages .= '* [[:' . $page->getPrefixedText() . "]]\n";
1860 $errors[] = array( 'cascadeprotected', count( $cascadingSources ), $pages );
1870 * Check action permissions not already checked in checkQuickPermissions
1872 * @param $action String the action to check
1873 * @param $user User to check
1874 * @param $errors Array list of current errors
1875 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1876 * @param $short Boolean short circuit on first error
1878 * @return Array list of errors
1880 private function checkActionPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1881 global $wgDeleteRevisionsLimit, $wgLang;
1883 if ( $action == 'protect' ) {
1884 if ( count( $this->getUserPermissionsErrorsInternal( 'edit', $user, $doExpensiveQueries, true ) ) ) {
1885 // If they can't edit, they shouldn't protect.
1886 $errors[] = array( 'protect-cantedit' );
1888 } elseif ( $action == 'create' ) {
1889 $title_protection = $this->getTitleProtection();
1890 if( $title_protection ) {
1891 if( $title_protection['pt_create_perm'] == 'sysop' ) {
1892 $title_protection['pt_create_perm'] = 'protect'; // B/C
1894 if( $title_protection['pt_create_perm'] == '' ||
1895 !$user->isAllowed( $title_protection['pt_create_perm'] ) )
1897 $errors[] = array( 'titleprotected', User
::whoIs( $title_protection['pt_user'] ), $title_protection['pt_reason'] );
1900 } elseif ( $action == 'move' ) {
1901 // Check for immobile pages
1902 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
1903 // Specific message for this case
1904 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
1905 } elseif ( !$this->isMovable() ) {
1906 // Less specific message for rarer cases
1907 $errors[] = array( 'immobile-source-page' );
1909 } elseif ( $action == 'move-target' ) {
1910 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
1911 $errors[] = array( 'immobile-target-namespace', $this->getNsText() );
1912 } elseif ( !$this->isMovable() ) {
1913 $errors[] = array( 'immobile-target-page' );
1915 } elseif ( $action == 'delete' ) {
1916 if ( $doExpensiveQueries && $wgDeleteRevisionsLimit
1917 && !$this->userCan( 'bigdelete', $user ) && $this->isBigDeletion() )
1919 $errors[] = array( 'delete-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) );
1926 * Check that the user isn't blocked from editting.
1928 * @param $action String the action to check
1929 * @param $user User to check
1930 * @param $errors Array list of current errors
1931 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1932 * @param $short Boolean short circuit on first error
1934 * @return Array list of errors
1936 private function checkUserBlock( $action, $user, $errors, $doExpensiveQueries, $short ) {
1937 // Account creation blocks handled at userlogin.
1938 // Unblocking handled in SpecialUnblock
1939 if( !$doExpensiveQueries ||
in_array( $action, array( 'createaccount', 'unblock' ) ) ) {
1943 global $wgContLang, $wgLang, $wgEmailConfirmToEdit;
1945 if ( $wgEmailConfirmToEdit && !$user->isEmailConfirmed() ) {
1946 $errors[] = array( 'confirmedittext' );
1949 if ( ( $action == 'edit' ||
$action == 'create' ) && !$user->isBlockedFrom( $this ) ) {
1950 // Don't block the user from editing their own talk page unless they've been
1951 // explicitly blocked from that too.
1952 } elseif( $user->isBlocked() && $user->mBlock
->prevents( $action ) !== false ) {
1953 $block = $user->getBlock();
1955 // This is from OutputPage::blockedPage
1956 // Copied at r23888 by werdna
1958 $id = $user->blockedBy();
1959 $reason = $user->blockedFor();
1960 if ( $reason == '' ) {
1961 $reason = wfMsg( 'blockednoreason' );
1963 $ip = $user->getRequest()->getIP();
1965 if ( is_numeric( $id ) ) {
1966 $name = User
::whoIs( $id );
1971 $link = '[[' . $wgContLang->getNsText( NS_USER
) . ":{$name}|{$name}]]";
1972 $blockid = $block->getId();
1973 $blockExpiry = $block->getExpiry();
1974 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW
, $block->mTimestamp
), true );
1975 if ( $blockExpiry == 'infinity' ) {
1976 $blockExpiry = wfMessage( 'infiniteblock' )->text();
1978 $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW
, $blockExpiry ), true );
1981 $intended = strval( $block->getTarget() );
1983 $errors[] = array( ( $block->mAuto ?
'autoblockedtext' : 'blockedtext' ), $link, $reason, $ip, $name,
1984 $blockid, $blockExpiry, $intended, $blockTimestamp );
1991 * Check that the user is allowed to read this page.
1993 * @param $action String the action to check
1994 * @param $user User to check
1995 * @param $errors Array list of current errors
1996 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1997 * @param $short Boolean short circuit on first error
1999 * @return Array list of errors
2001 private function checkReadPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
2002 global $wgWhitelistRead, $wgGroupPermissions, $wgRevokePermissions;
2003 static $useShortcut = null;
2005 # Initialize the $useShortcut boolean, to determine if we can skip quite a bit of code below
2006 if ( is_null( $useShortcut ) ) {
2007 $useShortcut = true;
2008 if ( empty( $wgGroupPermissions['*']['read'] ) ) {
2009 # Not a public wiki, so no shortcut
2010 $useShortcut = false;
2011 } elseif ( !empty( $wgRevokePermissions ) ) {
2013 * Iterate through each group with permissions being revoked (key not included since we don't care
2014 * what the group name is), then check if the read permission is being revoked. If it is, then
2015 * we don't use the shortcut below since the user might not be able to read, even though anon
2016 * reading is allowed.
2018 foreach ( $wgRevokePermissions as $perms ) {
2019 if ( !empty( $perms['read'] ) ) {
2020 # We might be removing the read right from the user, so no shortcut
2021 $useShortcut = false;
2028 $whitelisted = false;
2029 if ( $useShortcut ) {
2030 # Shortcut for public wikis, allows skipping quite a bit of code
2031 $whitelisted = true;
2032 } elseif ( $user->isAllowed( 'read' ) ) {
2033 # If the user is allowed to read pages, he is allowed to read all pages
2034 $whitelisted = true;
2035 } elseif ( $this->isSpecial( 'Userlogin' )
2036 ||
$this->isSpecial( 'ChangePassword' )
2037 ||
$this->isSpecial( 'PasswordReset' )
2039 # Always grant access to the login page.
2040 # Even anons need to be able to log in.
2041 $whitelisted = true;
2042 } elseif ( is_array( $wgWhitelistRead ) && count( $wgWhitelistRead ) ) {
2043 # Time to check the whitelist
2044 # Only do these checks is there's something to check against
2045 $name = $this->getPrefixedText();
2046 $dbName = $this->getPrefixedDBKey();
2048 // Check for explicit whitelisting with and without underscores
2049 if ( in_array( $name, $wgWhitelistRead, true ) ||
in_array( $dbName, $wgWhitelistRead, true ) ) {
2050 $whitelisted = true;
2051 } elseif ( $this->getNamespace() == NS_MAIN
) {
2052 # Old settings might have the title prefixed with
2053 # a colon for main-namespace pages
2054 if ( in_array( ':' . $name, $wgWhitelistRead ) ) {
2055 $whitelisted = true;
2057 } elseif ( $this->isSpecialPage() ) {
2058 # If it's a special page, ditch the subpage bit and check again
2059 $name = $this->getDBkey();
2060 list( $name, /* $subpage */ ) = SpecialPageFactory
::resolveAlias( $name );
2061 if ( $name !== false ) {
2062 $pure = SpecialPage
::getTitleFor( $name )->getPrefixedText();
2063 if ( in_array( $pure, $wgWhitelistRead, true ) ) {
2064 $whitelisted = true;
2070 if ( !$whitelisted ) {
2071 # If the title is not whitelisted, give extensions a chance to do so...
2072 wfRunHooks( 'TitleReadWhitelist', array( $this, $user, &$whitelisted ) );
2073 if ( !$whitelisted ) {
2074 $errors[] = $this->missingPermissionError( $action, $short );
2082 * Get a description array when the user doesn't have the right to perform
2083 * $action (i.e. when User::isAllowed() returns false)
2085 * @param $action String the action to check
2086 * @param $short Boolean short circuit on first error
2087 * @return Array list of errors
2089 private function missingPermissionError( $action, $short ) {
2090 // We avoid expensive display logic for quickUserCan's and such
2092 return array( 'badaccess-group0' );
2095 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
2096 User
::getGroupsWithPermission( $action ) );
2098 if ( count( $groups ) ) {
2102 $wgLang->commaList( $groups ),
2106 return array( 'badaccess-group0' );
2111 * Can $user perform $action on this page? This is an internal function,
2112 * which checks ONLY that previously checked by userCan (i.e. it leaves out
2113 * checks on wfReadOnly() and blocks)
2115 * @param $action String action that permission needs to be checked for
2116 * @param $user User to check
2117 * @param $doExpensiveQueries Bool Set this to false to avoid doing unnecessary queries.
2118 * @param $short Bool Set this to true to stop after the first permission error.
2119 * @return Array of arrays of the arguments to wfMsg to explain permissions problems.
2121 protected function getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries = true, $short = false ) {
2122 wfProfileIn( __METHOD__
);
2124 # Read has special handling
2125 if ( $action == 'read' ) {
2127 'checkPermissionHooks',
2128 'checkReadPermissions',
2132 'checkQuickPermissions',
2133 'checkPermissionHooks',
2134 'checkSpecialsAndNSPermissions',
2135 'checkCSSandJSPermissions',
2136 'checkPageRestrictions',
2137 'checkCascadingSourcesRestrictions',
2138 'checkActionPermissions',
2144 while( count( $checks ) > 0 &&
2145 !( $short && count( $errors ) > 0 ) ) {
2146 $method = array_shift( $checks );
2147 $errors = $this->$method( $action, $user, $errors, $doExpensiveQueries, $short );
2150 wfProfileOut( __METHOD__
);
2155 * Protect css subpages of user pages: can $wgUser edit
2158 * @deprecated in 1.19; will be removed in 1.20. Use getUserPermissionsErrors() instead.
2161 public function userCanEditCssSubpage() {
2163 wfDeprecated( __METHOD__
, '1.19' );
2164 return ( ( $wgUser->isAllowedAll( 'editusercssjs', 'editusercss' ) )
2165 ||
preg_match( '/^' . preg_quote( $wgUser->getName(), '/' ) . '\//', $this->mTextform
) );
2169 * Protect js subpages of user pages: can $wgUser edit
2172 * @deprecated in 1.19; will be removed in 1.20. Use getUserPermissionsErrors() instead.
2175 public function userCanEditJsSubpage() {
2177 wfDeprecated( __METHOD__
, '1.19' );
2178 return ( ( $wgUser->isAllowedAll( 'editusercssjs', 'edituserjs' ) )
2179 ||
preg_match( '/^' . preg_quote( $wgUser->getName(), '/' ) . '\//', $this->mTextform
) );
2183 * Get a filtered list of all restriction types supported by this wiki.
2184 * @param bool $exists True to get all restriction types that apply to
2185 * titles that do exist, False for all restriction types that apply to
2186 * titles that do not exist
2189 public static function getFilteredRestrictionTypes( $exists = true ) {
2190 global $wgRestrictionTypes;
2191 $types = $wgRestrictionTypes;
2193 # Remove the create restriction for existing titles
2194 $types = array_diff( $types, array( 'create' ) );
2196 # Only the create and upload restrictions apply to non-existing titles
2197 $types = array_intersect( $types, array( 'create', 'upload' ) );
2203 * Returns restriction types for the current Title
2205 * @return array applicable restriction types
2207 public function getRestrictionTypes() {
2208 if ( $this->isSpecialPage() ) {
2212 $types = self
::getFilteredRestrictionTypes( $this->exists() );
2214 if ( $this->getNamespace() != NS_FILE
) {
2215 # Remove the upload restriction for non-file titles
2216 $types = array_diff( $types, array( 'upload' ) );
2219 wfRunHooks( 'TitleGetRestrictionTypes', array( $this, &$types ) );
2221 wfDebug( __METHOD__
. ': applicable restrictions to [[' .
2222 $this->getPrefixedText() . ']] are {' . implode( ',', $types ) . "}\n" );
2228 * Is this title subject to title protection?
2229 * Title protection is the one applied against creation of such title.
2231 * @return Mixed An associative array representing any existent title
2232 * protection, or false if there's none.
2234 private function getTitleProtection() {
2235 // Can't protect pages in special namespaces
2236 if ( $this->getNamespace() < 0 ) {
2240 // Can't protect pages that exist.
2241 if ( $this->exists() ) {
2245 if ( !isset( $this->mTitleProtection
) ) {
2246 $dbr = wfGetDB( DB_SLAVE
);
2247 $res = $dbr->select( 'protected_titles', '*',
2248 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2251 // fetchRow returns false if there are no rows.
2252 $this->mTitleProtection
= $dbr->fetchRow( $res );
2254 return $this->mTitleProtection
;
2258 * Update the title protection status
2260 * @deprecated in 1.19; will be removed in 1.20. Use WikiPage::doUpdateRestrictions() instead.
2261 * @param $create_perm String Permission required for creation
2262 * @param $reason String Reason for protection
2263 * @param $expiry String Expiry timestamp
2264 * @return boolean true
2266 public function updateTitleProtection( $create_perm, $reason, $expiry ) {
2267 wfDeprecated( __METHOD__
, '1.19' );
2271 $limit = array( 'create' => $create_perm );
2272 $expiry = array( 'create' => $expiry );
2274 $page = WikiPage
::factory( $this );
2275 $status = $page->doUpdateRestrictions( $limit, $expiry, false, $reason, $wgUser );
2277 return $status->isOK();
2281 * Remove any title protection due to page existing
2283 public function deleteTitleProtection() {
2284 $dbw = wfGetDB( DB_MASTER
);
2288 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2291 $this->mTitleProtection
= false;
2295 * Is this page "semi-protected" - the *only* protection is autoconfirm?
2297 * @param $action String Action to check (default: edit)
2300 public function isSemiProtected( $action = 'edit' ) {
2301 if ( $this->exists() ) {
2302 $restrictions = $this->getRestrictions( $action );
2303 if ( count( $restrictions ) > 0 ) {
2304 foreach ( $restrictions as $restriction ) {
2305 if ( strtolower( $restriction ) != 'autoconfirmed' ) {
2315 # If it doesn't exist, it can't be protected
2321 * Does the title correspond to a protected article?
2323 * @param $action String the action the page is protected from,
2324 * by default checks all actions.
2327 public function isProtected( $action = '' ) {
2328 global $wgRestrictionLevels;
2330 $restrictionTypes = $this->getRestrictionTypes();
2332 # Special pages have inherent protection
2333 if( $this->isSpecialPage() ) {
2337 # Check regular protection levels
2338 foreach ( $restrictionTypes as $type ) {
2339 if ( $action == $type ||
$action == '' ) {
2340 $r = $this->getRestrictions( $type );
2341 foreach ( $wgRestrictionLevels as $level ) {
2342 if ( in_array( $level, $r ) && $level != '' ) {
2353 * Determines if $user is unable to edit this page because it has been protected
2354 * by $wgNamespaceProtection.
2356 * @param $user User object to check permissions
2359 public function isNamespaceProtected( User
$user ) {
2360 global $wgNamespaceProtection;
2362 if ( isset( $wgNamespaceProtection[$this->mNamespace
] ) ) {
2363 foreach ( (array)$wgNamespaceProtection[$this->mNamespace
] as $right ) {
2364 if ( $right != '' && !$user->isAllowed( $right ) ) {
2373 * Cascading protection: Return true if cascading restrictions apply to this page, false if not.
2375 * @return Bool If the page is subject to cascading restrictions.
2377 public function isCascadeProtected() {
2378 list( $sources, /* $restrictions */ ) = $this->getCascadeProtectionSources( false );
2379 return ( $sources > 0 );
2383 * Cascading protection: Get the source of any cascading restrictions on this page.
2385 * @param $getPages Bool Whether or not to retrieve the actual pages
2386 * that the restrictions have come from.
2387 * @return Mixed Array of Title objects of the pages from which cascading restrictions
2388 * have come, false for none, or true if such restrictions exist, but $getPages
2389 * was not set. The restriction array is an array of each type, each of which
2390 * contains a array of unique groups.
2392 public function getCascadeProtectionSources( $getPages = true ) {
2394 $pagerestrictions = array();
2396 if ( isset( $this->mCascadeSources
) && $getPages ) {
2397 return array( $this->mCascadeSources
, $this->mCascadingRestrictions
);
2398 } elseif ( isset( $this->mHasCascadingRestrictions
) && !$getPages ) {
2399 return array( $this->mHasCascadingRestrictions
, $pagerestrictions );
2402 wfProfileIn( __METHOD__
);
2404 $dbr = wfGetDB( DB_SLAVE
);
2406 if ( $this->getNamespace() == NS_FILE
) {
2407 $tables = array( 'imagelinks', 'page_restrictions' );
2408 $where_clauses = array(
2409 'il_to' => $this->getDBkey(),
2414 $tables = array( 'templatelinks', 'page_restrictions' );
2415 $where_clauses = array(
2416 'tl_namespace' => $this->getNamespace(),
2417 'tl_title' => $this->getDBkey(),
2424 $cols = array( 'pr_page', 'page_namespace', 'page_title',
2425 'pr_expiry', 'pr_type', 'pr_level' );
2426 $where_clauses[] = 'page_id=pr_page';
2429 $cols = array( 'pr_expiry' );
2432 $res = $dbr->select( $tables, $cols, $where_clauses, __METHOD__
);
2434 $sources = $getPages ?
array() : false;
2435 $now = wfTimestampNow();
2436 $purgeExpired = false;
2438 foreach ( $res as $row ) {
2439 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2440 if ( $expiry > $now ) {
2442 $page_id = $row->pr_page
;
2443 $page_ns = $row->page_namespace
;
2444 $page_title = $row->page_title
;
2445 $sources[$page_id] = Title
::makeTitle( $page_ns, $page_title );
2446 # Add groups needed for each restriction type if its not already there
2447 # Make sure this restriction type still exists
2449 if ( !isset( $pagerestrictions[$row->pr_type
] ) ) {
2450 $pagerestrictions[$row->pr_type
] = array();
2453 if ( isset( $pagerestrictions[$row->pr_type
] ) &&
2454 !in_array( $row->pr_level
, $pagerestrictions[$row->pr_type
] ) ) {
2455 $pagerestrictions[$row->pr_type
][] = $row->pr_level
;
2461 // Trigger lazy purge of expired restrictions from the db
2462 $purgeExpired = true;
2465 if ( $purgeExpired ) {
2466 Title
::purgeExpiredRestrictions();
2470 $this->mCascadeSources
= $sources;
2471 $this->mCascadingRestrictions
= $pagerestrictions;
2473 $this->mHasCascadingRestrictions
= $sources;
2476 wfProfileOut( __METHOD__
);
2477 return array( $sources, $pagerestrictions );
2481 * Accessor/initialisation for mRestrictions
2483 * @param $action String action that permission needs to be checked for
2484 * @return Array of Strings the array of groups allowed to edit this article
2486 public function getRestrictions( $action ) {
2487 if ( !$this->mRestrictionsLoaded
) {
2488 $this->loadRestrictions();
2490 return isset( $this->mRestrictions
[$action] )
2491 ?
$this->mRestrictions
[$action]
2496 * Get the expiry time for the restriction against a given action
2499 * @return String|Bool 14-char timestamp, or 'infinity' if the page is protected forever
2500 * or not protected at all, or false if the action is not recognised.
2502 public function getRestrictionExpiry( $action ) {
2503 if ( !$this->mRestrictionsLoaded
) {
2504 $this->loadRestrictions();
2506 return isset( $this->mRestrictionsExpiry
[$action] ) ?
$this->mRestrictionsExpiry
[$action] : false;
2510 * Returns cascading restrictions for the current article
2514 function areRestrictionsCascading() {
2515 if ( !$this->mRestrictionsLoaded
) {
2516 $this->loadRestrictions();
2519 return $this->mCascadeRestriction
;
2523 * Loads a string into mRestrictions array
2525 * @param $res Resource restrictions as an SQL result.
2526 * @param $oldFashionedRestrictions String comma-separated list of page
2527 * restrictions from page table (pre 1.10)
2529 private function loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions = null ) {
2532 foreach ( $res as $row ) {
2536 $this->loadRestrictionsFromRows( $rows, $oldFashionedRestrictions );
2540 * Compiles list of active page restrictions from both page table (pre 1.10)
2541 * and page_restrictions table for this existing page.
2542 * Public for usage by LiquidThreads.
2544 * @param $rows array of db result objects
2545 * @param $oldFashionedRestrictions string comma-separated list of page
2546 * restrictions from page table (pre 1.10)
2548 public function loadRestrictionsFromRows( $rows, $oldFashionedRestrictions = null ) {
2550 $dbr = wfGetDB( DB_SLAVE
);
2552 $restrictionTypes = $this->getRestrictionTypes();
2554 foreach ( $restrictionTypes as $type ) {
2555 $this->mRestrictions
[$type] = array();
2556 $this->mRestrictionsExpiry
[$type] = $wgContLang->formatExpiry( '', TS_MW
);
2559 $this->mCascadeRestriction
= false;
2561 # Backwards-compatibility: also load the restrictions from the page record (old format).
2563 if ( $oldFashionedRestrictions === null ) {
2564 $oldFashionedRestrictions = $dbr->selectField( 'page', 'page_restrictions',
2565 array( 'page_id' => $this->getArticleID() ), __METHOD__
);
2568 if ( $oldFashionedRestrictions != '' ) {
2570 foreach ( explode( ':', trim( $oldFashionedRestrictions ) ) as $restrict ) {
2571 $temp = explode( '=', trim( $restrict ) );
2572 if ( count( $temp ) == 1 ) {
2573 // old old format should be treated as edit/move restriction
2574 $this->mRestrictions
['edit'] = explode( ',', trim( $temp[0] ) );
2575 $this->mRestrictions
['move'] = explode( ',', trim( $temp[0] ) );
2577 $restriction = trim( $temp[1] );
2578 if( $restriction != '' ) { //some old entries are empty
2579 $this->mRestrictions
[$temp[0]] = explode( ',', $restriction );
2584 $this->mOldRestrictions
= true;
2588 if ( count( $rows ) ) {
2589 # Current system - load second to make them override.
2590 $now = wfTimestampNow();
2591 $purgeExpired = false;
2593 # Cycle through all the restrictions.
2594 foreach ( $rows as $row ) {
2596 // Don't take care of restrictions types that aren't allowed
2597 if ( !in_array( $row->pr_type
, $restrictionTypes ) )
2600 // This code should be refactored, now that it's being used more generally,
2601 // But I don't really see any harm in leaving it in Block for now -werdna
2602 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2604 // Only apply the restrictions if they haven't expired!
2605 if ( !$expiry ||
$expiry > $now ) {
2606 $this->mRestrictionsExpiry
[$row->pr_type
] = $expiry;
2607 $this->mRestrictions
[$row->pr_type
] = explode( ',', trim( $row->pr_level
) );
2609 $this->mCascadeRestriction |
= $row->pr_cascade
;
2611 // Trigger a lazy purge of expired restrictions
2612 $purgeExpired = true;
2616 if ( $purgeExpired ) {
2617 Title
::purgeExpiredRestrictions();
2621 $this->mRestrictionsLoaded
= true;
2625 * Load restrictions from the page_restrictions table
2627 * @param $oldFashionedRestrictions String comma-separated list of page
2628 * restrictions from page table (pre 1.10)
2630 public function loadRestrictions( $oldFashionedRestrictions = null ) {
2632 if ( !$this->mRestrictionsLoaded
) {
2633 if ( $this->exists() ) {
2634 $dbr = wfGetDB( DB_SLAVE
);
2636 $res = $dbr->select(
2637 'page_restrictions',
2639 array( 'pr_page' => $this->getArticleID() ),
2643 $this->loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions );
2645 $title_protection = $this->getTitleProtection();
2647 if ( $title_protection ) {
2648 $now = wfTimestampNow();
2649 $expiry = $wgContLang->formatExpiry( $title_protection['pt_expiry'], TS_MW
);
2651 if ( !$expiry ||
$expiry > $now ) {
2652 // Apply the restrictions
2653 $this->mRestrictionsExpiry
['create'] = $expiry;
2654 $this->mRestrictions
['create'] = explode( ',', trim( $title_protection['pt_create_perm'] ) );
2655 } else { // Get rid of the old restrictions
2656 Title
::purgeExpiredRestrictions();
2657 $this->mTitleProtection
= false;
2660 $this->mRestrictionsExpiry
['create'] = $wgContLang->formatExpiry( '', TS_MW
);
2662 $this->mRestrictionsLoaded
= true;
2668 * Flush the protection cache in this object and force reload from the database.
2669 * This is used when updating protection from WikiPage::doUpdateRestrictions().
2671 public function flushRestrictions() {
2672 $this->mRestrictionsLoaded
= false;
2673 $this->mTitleProtection
= null;
2677 * Purge expired restrictions from the page_restrictions table
2679 static function purgeExpiredRestrictions() {
2680 $dbw = wfGetDB( DB_MASTER
);
2682 'page_restrictions',
2683 array( 'pr_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
2689 array( 'pt_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
2695 * Does this have subpages? (Warning, usually requires an extra DB query.)
2699 public function hasSubpages() {
2700 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
2705 # We dynamically add a member variable for the purpose of this method
2706 # alone to cache the result. There's no point in having it hanging
2707 # around uninitialized in every Title object; therefore we only add it
2708 # if needed and don't declare it statically.
2709 if ( isset( $this->mHasSubpages
) ) {
2710 return $this->mHasSubpages
;
2713 $subpages = $this->getSubpages( 1 );
2714 if ( $subpages instanceof TitleArray
) {
2715 return $this->mHasSubpages
= (bool)$subpages->count();
2717 return $this->mHasSubpages
= false;
2721 * Get all subpages of this page.
2723 * @param $limit Int maximum number of subpages to fetch; -1 for no limit
2724 * @return mixed TitleArray, or empty array if this page's namespace
2725 * doesn't allow subpages
2727 public function getSubpages( $limit = -1 ) {
2728 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
2732 $dbr = wfGetDB( DB_SLAVE
);
2733 $conds['page_namespace'] = $this->getNamespace();
2734 $conds[] = 'page_title ' . $dbr->buildLike( $this->getDBkey() . '/', $dbr->anyString() );
2736 if ( $limit > -1 ) {
2737 $options['LIMIT'] = $limit;
2739 return $this->mSubpages
= TitleArray
::newFromResult(
2740 $dbr->select( 'page',
2741 array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' ),
2750 * Is there a version of this page in the deletion archive?
2752 * @return Int the number of archived revisions
2754 public function isDeleted() {
2755 if ( $this->getNamespace() < 0 ) {
2758 $dbr = wfGetDB( DB_SLAVE
);
2760 $n = $dbr->selectField( 'archive', 'COUNT(*)',
2761 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
2764 if ( $this->getNamespace() == NS_FILE
) {
2765 $n +
= $dbr->selectField( 'filearchive', 'COUNT(*)',
2766 array( 'fa_name' => $this->getDBkey() ),
2775 * Is there a version of this page in the deletion archive?
2779 public function isDeletedQuick() {
2780 if ( $this->getNamespace() < 0 ) {
2783 $dbr = wfGetDB( DB_SLAVE
);
2784 $deleted = (bool)$dbr->selectField( 'archive', '1',
2785 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
2788 if ( !$deleted && $this->getNamespace() == NS_FILE
) {
2789 $deleted = (bool)$dbr->selectField( 'filearchive', '1',
2790 array( 'fa_name' => $this->getDBkey() ),
2798 * Get the article ID for this Title from the link cache,
2799 * adding it if necessary
2801 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select
2803 * @return Int the ID
2805 public function getArticleID( $flags = 0 ) {
2806 if ( $this->getNamespace() < 0 ) {
2807 return $this->mArticleID
= 0;
2809 $linkCache = LinkCache
::singleton();
2810 if ( $flags & self
::GAID_FOR_UPDATE
) {
2811 $oldUpdate = $linkCache->forUpdate( true );
2812 $linkCache->clearLink( $this );
2813 $this->mArticleID
= $linkCache->addLinkObj( $this );
2814 $linkCache->forUpdate( $oldUpdate );
2816 if ( -1 == $this->mArticleID
) {
2817 $this->mArticleID
= $linkCache->addLinkObj( $this );
2820 return $this->mArticleID
;
2824 * Is this an article that is a redirect page?
2825 * Uses link cache, adding it if necessary
2827 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2830 public function isRedirect( $flags = 0 ) {
2831 if ( !is_null( $this->mRedirect
) ) {
2832 return $this->mRedirect
;
2834 # Calling getArticleID() loads the field from cache as needed
2835 if ( !$this->getArticleID( $flags ) ) {
2836 return $this->mRedirect
= false;
2839 $linkCache = LinkCache
::singleton();
2840 $cached = $linkCache->getGoodLinkFieldObj( $this, 'redirect' );
2841 if ( $cached === null ) { # check the assumption that the cache actually knows about this title
2842 # XXX: this does apparently happen, see https://bugzilla.wikimedia.org/show_bug.cgi?id=37209
2843 # as a stop gap, perhaps log this, but don't throw an exception?
2844 throw new MWException( "LinkCache doesn't currently know about this title: " . $this->getPrefixedDBkey() );
2847 $this->mRedirect
= (bool)$cached;
2849 return $this->mRedirect
;
2853 * What is the length of this page?
2854 * Uses link cache, adding it if necessary
2856 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2859 public function getLength( $flags = 0 ) {
2860 if ( $this->mLength
!= -1 ) {
2861 return $this->mLength
;
2863 # Calling getArticleID() loads the field from cache as needed
2864 if ( !$this->getArticleID( $flags ) ) {
2865 return $this->mLength
= 0;
2867 $linkCache = LinkCache
::singleton();
2868 $cached = $linkCache->getGoodLinkFieldObj( $this, 'length' );
2869 if ( $cached === null ) { # check the assumption that the cache actually knows about this title
2870 # XXX: this does apparently happen, see https://bugzilla.wikimedia.org/show_bug.cgi?id=37209
2871 # as a stop gap, perhaps log this, but don't throw an exception?
2872 throw new MWException( "LinkCache doesn't currently know about this title: " . $this->getPrefixedDBkey() );
2875 $this->mLength
= intval( $cached );
2877 return $this->mLength
;
2881 * What is the page_latest field for this page?
2883 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2884 * @return Int or 0 if the page doesn't exist
2886 public function getLatestRevID( $flags = 0 ) {
2887 if ( !( $flags & Title
::GAID_FOR_UPDATE
) && $this->mLatestID
!== false ) {
2888 return intval( $this->mLatestID
);
2890 # Calling getArticleID() loads the field from cache as needed
2891 if ( !$this->getArticleID( $flags ) ) {
2892 return $this->mLatestID
= 0;
2894 $linkCache = LinkCache
::singleton();
2895 $cached = $linkCache->getGoodLinkFieldObj( $this, 'revision' );
2896 if ( $cached === null ) { # check the assumption that the cache actually knows about this title
2897 # XXX: this does apparently happen, see https://bugzilla.wikimedia.org/show_bug.cgi?id=37209
2898 # as a stop gap, perhaps log this, but don't throw an exception?
2899 throw new MWException( "LinkCache doesn't currently know about this title: " . $this->getPrefixedDBkey() );
2902 $this->mLatestID
= intval( $cached );
2904 return $this->mLatestID
;
2908 * This clears some fields in this object, and clears any associated
2909 * keys in the "bad links" section of the link cache.
2911 * - This is called from WikiPage::doEdit() and WikiPage::insertOn() to allow
2912 * loading of the new page_id. It's also called from
2913 * WikiPage::doDeleteArticleReal()
2915 * @param $newid Int the new Article ID
2917 public function resetArticleID( $newid ) {
2918 $linkCache = LinkCache
::singleton();
2919 $linkCache->clearLink( $this );
2921 if ( $newid === false ) {
2922 $this->mArticleID
= -1;
2924 $this->mArticleID
= intval( $newid );
2926 $this->mRestrictionsLoaded
= false;
2927 $this->mRestrictions
= array();
2928 $this->mRedirect
= null;
2929 $this->mLength
= -1;
2930 $this->mLatestID
= false;
2931 $this->mContentModel
= false;
2932 $this->mEstimateRevisions
= null;
2936 * Capitalize a text string for a title if it belongs to a namespace that capitalizes
2938 * @param $text String containing title to capitalize
2939 * @param $ns int namespace index, defaults to NS_MAIN
2940 * @return String containing capitalized title
2942 public static function capitalize( $text, $ns = NS_MAIN
) {
2945 if ( MWNamespace
::isCapitalized( $ns ) ) {
2946 return $wgContLang->ucfirst( $text );
2953 * Secure and split - main initialisation function for this object
2955 * Assumes that mDbkeyform has been set, and is urldecoded
2956 * and uses underscores, but not otherwise munged. This function
2957 * removes illegal characters, splits off the interwiki and
2958 * namespace prefixes, sets the other forms, and canonicalizes
2961 * @return Bool true on success
2963 private function secureAndSplit() {
2964 global $wgContLang, $wgLocalInterwiki;
2967 $this->mInterwiki
= $this->mFragment
= '';
2968 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
2970 $dbkey = $this->mDbkeyform
;
2972 # Strip Unicode bidi override characters.
2973 # Sometimes they slip into cut-n-pasted page titles, where the
2974 # override chars get included in list displays.
2975 $dbkey = preg_replace( '/\xE2\x80[\x8E\x8F\xAA-\xAE]/S', '', $dbkey );
2977 # Clean up whitespace
2978 # Note: use of the /u option on preg_replace here will cause
2979 # input with invalid UTF-8 sequences to be nullified out in PHP 5.2.x,
2980 # conveniently disabling them.
2981 $dbkey = preg_replace( '/[ _\xA0\x{1680}\x{180E}\x{2000}-\x{200A}\x{2028}\x{2029}\x{202F}\x{205F}\x{3000}]+/u', '_', $dbkey );
2982 $dbkey = trim( $dbkey, '_' );
2984 if ( $dbkey == '' ) {
2988 if ( false !== strpos( $dbkey, UTF8_REPLACEMENT
) ) {
2989 # Contained illegal UTF-8 sequences or forbidden Unicode chars.
2993 $this->mDbkeyform
= $dbkey;
2995 # Initial colon indicates main namespace rather than specified default
2996 # but should not create invalid {ns,title} pairs such as {0,Project:Foo}
2997 if ( ':' == $dbkey[0] ) {
2998 $this->mNamespace
= NS_MAIN
;
2999 $dbkey = substr( $dbkey, 1 ); # remove the colon but continue processing
3000 $dbkey = trim( $dbkey, '_' ); # remove any subsequent whitespace
3003 # Namespace or interwiki prefix
3005 $prefixRegexp = "/^(.+?)_*:_*(.*)$/S";
3008 if ( preg_match( $prefixRegexp, $dbkey, $m ) ) {
3010 if ( ( $ns = $wgContLang->getNsIndex( $p ) ) !== false ) {
3011 # Ordinary namespace
3013 $this->mNamespace
= $ns;
3014 # For Talk:X pages, check if X has a "namespace" prefix
3015 if ( $ns == NS_TALK
&& preg_match( $prefixRegexp, $dbkey, $x ) ) {
3016 if ( $wgContLang->getNsIndex( $x[1] ) ) {
3017 # Disallow Talk:File:x type titles...
3019 } elseif ( Interwiki
::isValidInterwiki( $x[1] ) ) {
3020 # Disallow Talk:Interwiki:x type titles...
3024 } elseif ( Interwiki
::isValidInterwiki( $p ) ) {
3025 if ( !$firstPass ) {
3026 # Can't make a local interwiki link to an interwiki link.
3027 # That's just crazy!
3033 $this->mInterwiki
= $wgContLang->lc( $p );
3035 # Redundant interwiki prefix to the local wiki
3036 if ( $wgLocalInterwiki !== false
3037 && 0 == strcasecmp( $this->mInterwiki
, $wgLocalInterwiki ) )
3039 if ( $dbkey == '' ) {
3040 # Can't have an empty self-link
3043 $this->mInterwiki
= '';
3045 # Do another namespace split...
3049 # If there's an initial colon after the interwiki, that also
3050 # resets the default namespace
3051 if ( $dbkey !== '' && $dbkey[0] == ':' ) {
3052 $this->mNamespace
= NS_MAIN
;
3053 $dbkey = substr( $dbkey, 1 );
3056 # If there's no recognized interwiki or namespace,
3057 # then let the colon expression be part of the title.
3062 # We already know that some pages won't be in the database!
3063 if ( $this->mInterwiki
!= '' || NS_SPECIAL
== $this->mNamespace
) {
3064 $this->mArticleID
= 0;
3066 $fragment = strstr( $dbkey, '#' );
3067 if ( false !== $fragment ) {
3068 $this->setFragment( $fragment );
3069 $dbkey = substr( $dbkey, 0, strlen( $dbkey ) - strlen( $fragment ) );
3070 # remove whitespace again: prevents "Foo_bar_#"
3071 # becoming "Foo_bar_"
3072 $dbkey = preg_replace( '/_*$/', '', $dbkey );
3075 # Reject illegal characters.
3076 $rxTc = self
::getTitleInvalidRegex();
3077 if ( preg_match( $rxTc, $dbkey ) ) {
3081 # Pages with "/./" or "/../" appearing in the URLs will often be un-
3082 # reachable due to the way web browsers deal with 'relative' URLs.
3083 # Also, they conflict with subpage syntax. Forbid them explicitly.
3084 if ( strpos( $dbkey, '.' ) !== false &&
3085 ( $dbkey === '.' ||
$dbkey === '..' ||
3086 strpos( $dbkey, './' ) === 0 ||
3087 strpos( $dbkey, '../' ) === 0 ||
3088 strpos( $dbkey, '/./' ) !== false ||
3089 strpos( $dbkey, '/../' ) !== false ||
3090 substr( $dbkey, -2 ) == '/.' ||
3091 substr( $dbkey, -3 ) == '/..' ) )
3096 # Magic tilde sequences? Nu-uh!
3097 if ( strpos( $dbkey, '~~~' ) !== false ) {
3101 # Limit the size of titles to 255 bytes. This is typically the size of the
3102 # underlying database field. We make an exception for special pages, which
3103 # don't need to be stored in the database, and may edge over 255 bytes due
3104 # to subpage syntax for long titles, e.g. [[Special:Block/Long name]]
3105 if ( ( $this->mNamespace
!= NS_SPECIAL
&& strlen( $dbkey ) > 255 ) ||
3106 strlen( $dbkey ) > 512 )
3111 # Normally, all wiki links are forced to have an initial capital letter so [[foo]]
3112 # and [[Foo]] point to the same place. Don't force it for interwikis, since the
3113 # other site might be case-sensitive.
3114 $this->mUserCaseDBKey
= $dbkey;
3115 if ( $this->mInterwiki
== '' ) {
3116 $dbkey = self
::capitalize( $dbkey, $this->mNamespace
);
3119 # Can't make a link to a namespace alone... "empty" local links can only be
3120 # self-links with a fragment identifier.
3121 if ( $dbkey == '' && $this->mInterwiki
== '' && $this->mNamespace
!= NS_MAIN
) {
3125 // Allow IPv6 usernames to start with '::' by canonicalizing IPv6 titles.
3126 // IP names are not allowed for accounts, and can only be referring to
3127 // edits from the IP. Given '::' abbreviations and caps/lowercaps,
3128 // there are numerous ways to present the same IP. Having sp:contribs scan
3129 // them all is silly and having some show the edits and others not is
3130 // inconsistent. Same for talk/userpages. Keep them normalized instead.
3131 $dbkey = ( $this->mNamespace
== NS_USER ||
$this->mNamespace
== NS_USER_TALK
)
3132 ? IP
::sanitizeIP( $dbkey )
3135 // Any remaining initial :s are illegal.
3136 if ( $dbkey !== '' && ':' == $dbkey[0] ) {
3141 $this->mDbkeyform
= $dbkey;
3142 $this->mUrlform
= wfUrlencode( $dbkey );
3144 $this->mTextform
= str_replace( '_', ' ', $dbkey );
3150 * Get an array of Title objects linking to this Title
3151 * Also stores the IDs in the link cache.
3153 * WARNING: do not use this function on arbitrary user-supplied titles!
3154 * On heavily-used templates it will max out the memory.
3156 * @param $options Array: may be FOR UPDATE
3157 * @param $table String: table name
3158 * @param $prefix String: fields prefix
3159 * @return Array of Title objects linking here
3161 public function getLinksTo( $options = array(), $table = 'pagelinks', $prefix = 'pl' ) {
3162 if ( count( $options ) > 0 ) {
3163 $db = wfGetDB( DB_MASTER
);
3165 $db = wfGetDB( DB_SLAVE
);
3169 array( 'page', $table ),
3170 self
::getSelectFields(),
3172 "{$prefix}_from=page_id",
3173 "{$prefix}_namespace" => $this->getNamespace(),
3174 "{$prefix}_title" => $this->getDBkey() ),
3180 if ( $res->numRows() ) {
3181 $linkCache = LinkCache
::singleton();
3182 foreach ( $res as $row ) {
3183 $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
3185 $linkCache->addGoodLinkObjFromRow( $titleObj, $row );
3186 $retVal[] = $titleObj;
3194 * Get an array of Title objects using this Title as a template
3195 * Also stores the IDs in the link cache.
3197 * WARNING: do not use this function on arbitrary user-supplied titles!
3198 * On heavily-used templates it will max out the memory.
3200 * @param $options Array: may be FOR UPDATE
3201 * @return Array of Title the Title objects linking here
3203 public function getTemplateLinksTo( $options = array() ) {
3204 return $this->getLinksTo( $options, 'templatelinks', 'tl' );
3208 * Get an array of Title objects linked from this Title
3209 * Also stores the IDs in the link cache.
3211 * WARNING: do not use this function on arbitrary user-supplied titles!
3212 * On heavily-used templates it will max out the memory.
3214 * @param $options Array: may be FOR UPDATE
3215 * @param $table String: table name
3216 * @param $prefix String: fields prefix
3217 * @return Array of Title objects linking here
3219 public function getLinksFrom( $options = array(), $table = 'pagelinks', $prefix = 'pl' ) {
3220 global $wgContentHandlerUseDB;
3222 $id = $this->getArticleID();
3224 # If the page doesn't exist; there can't be any link from this page
3229 if ( count( $options ) > 0 ) {
3230 $db = wfGetDB( DB_MASTER
);
3232 $db = wfGetDB( DB_SLAVE
);
3235 $namespaceFiled = "{$prefix}_namespace";
3236 $titleField = "{$prefix}_title";
3238 $fields = array( $namespaceFiled, $titleField, 'page_id', 'page_len', 'page_is_redirect', 'page_latest' );
3239 if ( $wgContentHandlerUseDB ) $fields[] = 'page_content_model';
3242 array( $table, 'page' ),
3244 array( "{$prefix}_from" => $id ),
3247 array( 'page' => array( 'LEFT JOIN', array( "page_namespace=$namespaceFiled", "page_title=$titleField" ) ) )
3251 if ( $res->numRows() ) {
3252 $linkCache = LinkCache
::singleton();
3253 foreach ( $res as $row ) {
3254 $titleObj = Title
::makeTitle( $row->$namespaceFiled, $row->$titleField );
3256 if ( $row->page_id
) {
3257 $linkCache->addGoodLinkObjFromRow( $titleObj, $row );
3259 $linkCache->addBadLinkObj( $titleObj );
3261 $retVal[] = $titleObj;
3269 * Get an array of Title objects used on this Title as a template
3270 * Also stores the IDs in the link cache.
3272 * WARNING: do not use this function on arbitrary user-supplied titles!
3273 * On heavily-used templates it will max out the memory.
3275 * @param $options Array: may be FOR UPDATE
3276 * @return Array of Title the Title objects used here
3278 public function getTemplateLinksFrom( $options = array() ) {
3279 return $this->getLinksFrom( $options, 'templatelinks', 'tl' );
3283 * Get an array of Title objects referring to non-existent articles linked from this page
3285 * @todo check if needed (used only in SpecialBrokenRedirects.php, and should use redirect table in this case)
3286 * @return Array of Title the Title objects
3288 public function getBrokenLinksFrom() {
3289 if ( $this->getArticleID() == 0 ) {
3290 # All links from article ID 0 are false positives
3294 $dbr = wfGetDB( DB_SLAVE
);
3295 $res = $dbr->select(
3296 array( 'page', 'pagelinks' ),
3297 array( 'pl_namespace', 'pl_title' ),
3299 'pl_from' => $this->getArticleID(),
3300 'page_namespace IS NULL'
3302 __METHOD__
, array(),
3306 array( 'pl_namespace=page_namespace', 'pl_title=page_title' )
3312 foreach ( $res as $row ) {
3313 $retVal[] = Title
::makeTitle( $row->pl_namespace
, $row->pl_title
);
3320 * Get a list of URLs to purge from the Squid cache when this
3323 * @return Array of String the URLs
3325 public function getSquidURLs() {
3327 $this->getInternalURL(),
3328 $this->getInternalURL( 'action=history' )
3331 $pageLang = $this->getPageLanguage();
3332 if ( $pageLang->hasVariants() ) {
3333 $variants = $pageLang->getVariants();
3334 foreach ( $variants as $vCode ) {
3335 $urls[] = $this->getInternalURL( '', $vCode );
3343 * Purge all applicable Squid URLs
3345 public function purgeSquid() {
3347 if ( $wgUseSquid ) {
3348 $urls = $this->getSquidURLs();
3349 $u = new SquidUpdate( $urls );
3355 * Move this page without authentication
3357 * @param $nt Title the new page Title
3358 * @return Mixed true on success, getUserPermissionsErrors()-like array on failure
3360 public function moveNoAuth( &$nt ) {
3361 return $this->moveTo( $nt, false );
3365 * Check whether a given move operation would be valid.
3366 * Returns true if ok, or a getUserPermissionsErrors()-like array otherwise
3368 * @param $nt Title the new title
3369 * @param $auth Bool indicates whether $wgUser's permissions
3371 * @param $reason String is the log summary of the move, used for spam checking
3372 * @return Mixed True on success, getUserPermissionsErrors()-like array on failure
3374 public function isValidMoveOperation( &$nt, $auth = true, $reason = '' ) {
3379 // Normally we'd add this to $errors, but we'll get
3380 // lots of syntax errors if $nt is not an object
3381 return array( array( 'badtitletext' ) );
3383 if ( $this->equals( $nt ) ) {
3384 $errors[] = array( 'selfmove' );
3386 if ( !$this->isMovable() ) {
3387 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
3389 if ( $nt->getInterwiki() != '' ) {
3390 $errors[] = array( 'immobile-target-namespace-iw' );
3392 if ( !$nt->isMovable() ) {
3393 $errors[] = array( 'immobile-target-namespace', $nt->getNsText() );
3396 $oldid = $this->getArticleID();
3397 $newid = $nt->getArticleID();
3399 if ( strlen( $nt->getDBkey() ) < 1 ) {
3400 $errors[] = array( 'articleexists' );
3402 if ( ( $this->getDBkey() == '' ) ||
3404 ( $nt->getDBkey() == '' ) ) {
3405 $errors[] = array( 'badarticleerror' );
3408 // Image-specific checks
3409 if ( $this->getNamespace() == NS_FILE
) {
3410 $errors = array_merge( $errors, $this->validateFileMoveOperation( $nt ) );
3413 if ( $nt->getNamespace() == NS_FILE
&& $this->getNamespace() != NS_FILE
) {
3414 $errors[] = array( 'nonfile-cannot-move-to-file' );
3418 $errors = wfMergeErrorArrays( $errors,
3419 $this->getUserPermissionsErrors( 'move', $wgUser ),
3420 $this->getUserPermissionsErrors( 'edit', $wgUser ),
3421 $nt->getUserPermissionsErrors( 'move-target', $wgUser ),
3422 $nt->getUserPermissionsErrors( 'edit', $wgUser ) );
3425 $match = EditPage
::matchSummarySpamRegex( $reason );
3426 if ( $match !== false ) {
3427 // This is kind of lame, won't display nice
3428 $errors[] = array( 'spamprotectiontext' );
3432 if ( !wfRunHooks( 'AbortMove', array( $this, $nt, $wgUser, &$err, $reason ) ) ) {
3433 $errors[] = array( 'hookaborted', $err );
3436 # The move is allowed only if (1) the target doesn't exist, or
3437 # (2) the target is a redirect to the source, and has no history
3438 # (so we can undo bad moves right after they're done).
3440 if ( 0 != $newid ) { # Target exists; check for validity
3441 if ( !$this->isValidMoveTarget( $nt ) ) {
3442 $errors[] = array( 'articleexists' );
3445 $tp = $nt->getTitleProtection();
3446 $right = ( $tp['pt_create_perm'] == 'sysop' ) ?
'protect' : $tp['pt_create_perm'];
3447 if ( $tp and !$wgUser->isAllowed( $right ) ) {
3448 $errors[] = array( 'cantmove-titleprotected' );
3451 if ( empty( $errors ) ) {
3458 * Check if the requested move target is a valid file move target
3459 * @param Title $nt Target title
3460 * @return array List of errors
3462 protected function validateFileMoveOperation( $nt ) {
3467 // wfFindFile( $nt ) / wfLocalFile( $nt ) is not allowed until below
3469 $file = wfLocalFile( $this );
3470 if ( $file->exists() ) {
3471 if ( $nt->getText() != wfStripIllegalFilenameChars( $nt->getText() ) ) {
3472 $errors[] = array( 'imageinvalidfilename' );
3474 if ( !File
::checkExtensionCompatibility( $file, $nt->getDBkey() ) ) {
3475 $errors[] = array( 'imagetypemismatch' );
3479 if ( $nt->getNamespace() != NS_FILE
) {
3480 $errors[] = array( 'imagenocrossnamespace' );
3481 // From here we want to do checks on a file object, so if we can't
3482 // create one, we must return.
3486 // wfFindFile( $nt ) / wfLocalFile( $nt ) is allowed below here
3488 $destFile = wfLocalFile( $nt );
3489 if ( !$wgUser->isAllowed( 'reupload-shared' ) && !$destFile->exists() && wfFindFile( $nt ) ) {
3490 $errors[] = array( 'file-exists-sharedrepo' );
3497 * Move a title to a new location
3499 * @param $nt Title the new title
3500 * @param $auth Bool indicates whether $wgUser's permissions
3502 * @param $reason String the reason for the move
3503 * @param $createRedirect Bool Whether to create a redirect from the old title to the new title.
3504 * Ignored if the user doesn't have the suppressredirect right.
3505 * @return Mixed true on success, getUserPermissionsErrors()-like array on failure
3507 public function moveTo( &$nt, $auth = true, $reason = '', $createRedirect = true ) {
3509 $err = $this->isValidMoveOperation( $nt, $auth, $reason );
3510 if ( is_array( $err ) ) {
3511 // Auto-block user's IP if the account was "hard" blocked
3512 $wgUser->spreadAnyEditBlock();
3515 // Check suppressredirect permission
3516 if ( $auth && !$wgUser->isAllowed( 'suppressredirect' ) ) {
3517 $createRedirect = true;
3520 // If it is a file, move it first.
3521 // It is done before all other moving stuff is done because it's hard to revert.
3522 $dbw = wfGetDB( DB_MASTER
);
3523 if ( $this->getNamespace() == NS_FILE
) {
3524 $file = wfLocalFile( $this );
3525 if ( $file->exists() ) {
3526 $status = $file->move( $nt );
3527 if ( !$status->isOk() ) {
3528 return $status->getErrorsArray();
3531 // Clear RepoGroup process cache
3532 RepoGroup
::singleton()->clearCache( $this );
3533 RepoGroup
::singleton()->clearCache( $nt ); # clear false negative cache
3536 $dbw->begin( __METHOD__
); # If $file was a LocalFile, its transaction would have closed our own.
3537 $pageid = $this->getArticleID( self
::GAID_FOR_UPDATE
);
3538 $protected = $this->isProtected();
3540 // Do the actual move
3541 $this->moveToInternal( $nt, $reason, $createRedirect );
3543 // Refresh the sortkey for this row. Be careful to avoid resetting
3544 // cl_timestamp, which may disturb time-based lists on some sites.
3545 $prefixes = $dbw->select(
3547 array( 'cl_sortkey_prefix', 'cl_to' ),
3548 array( 'cl_from' => $pageid ),
3551 foreach ( $prefixes as $prefixRow ) {
3552 $prefix = $prefixRow->cl_sortkey_prefix
;
3553 $catTo = $prefixRow->cl_to
;
3554 $dbw->update( 'categorylinks',
3556 'cl_sortkey' => Collation
::singleton()->getSortKey(
3557 $nt->getCategorySortkey( $prefix ) ),
3558 'cl_timestamp=cl_timestamp' ),
3560 'cl_from' => $pageid,
3561 'cl_to' => $catTo ),
3566 $redirid = $this->getArticleID();
3569 # Protect the redirect title as the title used to be...
3570 $dbw->insertSelect( 'page_restrictions', 'page_restrictions',
3572 'pr_page' => $redirid,
3573 'pr_type' => 'pr_type',
3574 'pr_level' => 'pr_level',
3575 'pr_cascade' => 'pr_cascade',
3576 'pr_user' => 'pr_user',
3577 'pr_expiry' => 'pr_expiry'
3579 array( 'pr_page' => $pageid ),
3583 # Update the protection log
3584 $log = new LogPage( 'protect' );
3585 $comment = wfMsgForContent( 'prot_1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
3587 $comment .= wfMsgForContent( 'colon-separator' ) . $reason;
3589 // @todo FIXME: $params?
3590 $log->addEntry( 'move_prot', $nt, $comment, array( $this->getPrefixedText() ) );
3594 $oldnamespace = $this->getNamespace() & ~
1;
3595 $newnamespace = $nt->getNamespace() & ~
1;
3596 $oldtitle = $this->getDBkey();
3597 $newtitle = $nt->getDBkey();
3599 if ( $oldnamespace != $newnamespace ||
$oldtitle != $newtitle ) {
3600 WatchedItem
::duplicateEntries( $this, $nt );
3603 $dbw->commit( __METHOD__
);
3605 wfRunHooks( 'TitleMoveComplete', array( &$this, &$nt, &$wgUser, $pageid, $redirid ) );
3610 * Move page to a title which is either a redirect to the
3611 * source page or nonexistent
3613 * @param $nt Title the page to move to, which should be a redirect or nonexistent
3614 * @param $reason String The reason for the move
3615 * @param $createRedirect Bool Whether to leave a redirect at the old title. Does not check
3616 * if the user has the suppressredirect right
3617 * @throws MWException
3619 private function moveToInternal( &$nt, $reason = '', $createRedirect = true ) {
3620 global $wgUser, $wgContLang;
3622 if ( $nt->exists() ) {
3623 $moveOverRedirect = true;
3624 $logType = 'move_redir';
3626 $moveOverRedirect = false;
3630 $redirectSuppressed = !$createRedirect;
3632 $logEntry = new ManualLogEntry( 'move', $logType );
3633 $logEntry->setPerformer( $wgUser );
3634 $logEntry->setTarget( $this );
3635 $logEntry->setComment( $reason );
3636 $logEntry->setParameters( array(
3637 '4::target' => $nt->getPrefixedText(),
3638 '5::noredir' => $redirectSuppressed ?
'1': '0',
3641 $formatter = LogFormatter
::newFromEntry( $logEntry );
3642 $formatter->setContext( RequestContext
::newExtraneousContext( $this ) );
3643 $comment = $formatter->getPlainActionText();
3645 $comment .= wfMsgForContent( 'colon-separator' ) . $reason;
3647 # Truncate for whole multibyte characters.
3648 $comment = $wgContLang->truncate( $comment, 255 );
3650 $oldid = $this->getArticleID();
3652 $dbw = wfGetDB( DB_MASTER
);
3654 $newpage = WikiPage
::factory( $nt );
3656 if ( $moveOverRedirect ) {
3657 $newid = $nt->getArticleID();
3659 # Delete the old redirect. We don't save it to history since
3660 # by definition if we've got here it's rather uninteresting.
3661 # We have to remove it so that the next step doesn't trigger
3662 # a conflict on the unique namespace+title index...
3663 $dbw->delete( 'page', array( 'page_id' => $newid ), __METHOD__
);
3665 $newpage->doDeleteUpdates( $newid );
3668 # Save a null revision in the page's history notifying of the move
3669 $nullRevision = Revision
::newNullRevision( $dbw, $oldid, $comment, true );
3670 if ( !is_object( $nullRevision ) ) {
3671 throw new MWException( 'No valid null revision produced in ' . __METHOD__
);
3673 $nullRevId = $nullRevision->insertOn( $dbw );
3675 # Change the name of the target page:
3676 $dbw->update( 'page',
3678 'page_namespace' => $nt->getNamespace(),
3679 'page_title' => $nt->getDBkey(),
3681 /* WHERE */ array( 'page_id' => $oldid ),
3685 $this->resetArticleID( 0 );
3686 $nt->resetArticleID( $oldid );
3688 $newpage->updateRevisionOn( $dbw, $nullRevision );
3690 wfRunHooks( 'NewRevisionFromEditComplete',
3691 array( $newpage, $nullRevision, $nullRevision->getParentId(), $wgUser ) );
3693 $newpage->doEditUpdates( $nullRevision, $wgUser, array( 'changed' => false ) );
3695 if ( !$moveOverRedirect ) {
3696 WikiPage
::onArticleCreate( $nt );
3699 # Recreate the redirect, this time in the other direction.
3700 if ( $redirectSuppressed ) {
3701 WikiPage
::onArticleDelete( $this );
3703 $mwRedir = MagicWord
::get( 'redirect' );
3704 $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
3705 $redirectArticle = WikiPage
::factory( $this );
3706 $newid = $redirectArticle->insertOn( $dbw );
3707 if ( $newid ) { // sanity
3708 $redirectRevision = new Revision( array(
3710 'comment' => $comment,
3711 'text' => $redirectText ) );
3712 $redirectRevision->insertOn( $dbw );
3713 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
3715 wfRunHooks( 'NewRevisionFromEditComplete',
3716 array( $redirectArticle, $redirectRevision, false, $wgUser ) );
3718 $redirectArticle->doEditUpdates( $redirectRevision, $wgUser, array( 'created' => true ) );
3723 $logid = $logEntry->insert();
3724 $logEntry->publish( $logid );
3728 * Move this page's subpages to be subpages of $nt
3730 * @param $nt Title Move target
3731 * @param $auth bool Whether $wgUser's permissions should be checked
3732 * @param $reason string The reason for the move
3733 * @param $createRedirect bool Whether to create redirects from the old subpages to
3734 * the new ones Ignored if the user doesn't have the 'suppressredirect' right
3735 * @return mixed array with old page titles as keys, and strings (new page titles) or
3736 * arrays (errors) as values, or an error array with numeric indices if no pages
3739 public function moveSubpages( $nt, $auth = true, $reason = '', $createRedirect = true ) {
3740 global $wgMaximumMovedPages;
3741 // Check permissions
3742 if ( !$this->userCan( 'move-subpages' ) ) {
3743 return array( 'cant-move-subpages' );
3745 // Do the source and target namespaces support subpages?
3746 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
3747 return array( 'namespace-nosubpages',
3748 MWNamespace
::getCanonicalName( $this->getNamespace() ) );
3750 if ( !MWNamespace
::hasSubpages( $nt->getNamespace() ) ) {
3751 return array( 'namespace-nosubpages',
3752 MWNamespace
::getCanonicalName( $nt->getNamespace() ) );
3755 $subpages = $this->getSubpages( $wgMaximumMovedPages +
1 );
3758 foreach ( $subpages as $oldSubpage ) {
3760 if ( $count > $wgMaximumMovedPages ) {
3761 $retval[$oldSubpage->getPrefixedTitle()] =
3762 array( 'movepage-max-pages',
3763 $wgMaximumMovedPages );
3767 // We don't know whether this function was called before
3768 // or after moving the root page, so check both
3770 if ( $oldSubpage->getArticleID() == $this->getArticleID() ||
3771 $oldSubpage->getArticleID() == $nt->getArticleID() )
3773 // When moving a page to a subpage of itself,
3774 // don't move it twice
3777 $newPageName = preg_replace(
3778 '#^' . preg_quote( $this->getDBkey(), '#' ) . '#',
3779 StringUtils
::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
3780 $oldSubpage->getDBkey() );
3781 if ( $oldSubpage->isTalkPage() ) {
3782 $newNs = $nt->getTalkPage()->getNamespace();
3784 $newNs = $nt->getSubjectPage()->getNamespace();
3786 # Bug 14385: we need makeTitleSafe because the new page names may
3787 # be longer than 255 characters.
3788 $newSubpage = Title
::makeTitleSafe( $newNs, $newPageName );
3790 $success = $oldSubpage->moveTo( $newSubpage, $auth, $reason, $createRedirect );
3791 if ( $success === true ) {
3792 $retval[$oldSubpage->getPrefixedText()] = $newSubpage->getPrefixedText();
3794 $retval[$oldSubpage->getPrefixedText()] = $success;
3801 * Checks if this page is just a one-rev redirect.
3802 * Adds lock, so don't use just for light purposes.
3806 public function isSingleRevRedirect() {
3807 global $wgContentHandlerUseDB;
3809 $dbw = wfGetDB( DB_MASTER
);
3812 $fields = array( 'page_is_redirect', 'page_latest', 'page_id' );
3813 if ( $wgContentHandlerUseDB ) $fields[] = 'page_content_model';
3815 $row = $dbw->selectRow( 'page',
3819 array( 'FOR UPDATE' )
3821 # Cache some fields we may want
3822 $this->mArticleID
= $row ?
intval( $row->page_id
) : 0;
3823 $this->mRedirect
= $row ?
(bool)$row->page_is_redirect
: false;
3824 $this->mLatestID
= $row ?
intval( $row->page_latest
) : false;
3825 $this->mContentModel
= $row && isset( $row->page_content_model
) ?
strval( $row->page_content_model
) : false;
3826 if ( !$this->mRedirect
) {
3829 # Does the article have a history?
3830 $row = $dbw->selectField( array( 'page', 'revision' ),
3832 array( 'page_namespace' => $this->getNamespace(),
3833 'page_title' => $this->getDBkey(),
3835 'page_latest != rev_id'
3838 array( 'FOR UPDATE' )
3840 # Return true if there was no history
3841 return ( $row === false );
3845 * Checks if $this can be moved to a given Title
3846 * - Selects for update, so don't call it unless you mean business
3848 * @param $nt Title the new title to check
3851 public function isValidMoveTarget( $nt ) {
3852 # Is it an existing file?
3853 if ( $nt->getNamespace() == NS_FILE
) {
3854 $file = wfLocalFile( $nt );
3855 if ( $file->exists() ) {
3856 wfDebug( __METHOD__
. ": file exists\n" );
3860 # Is it a redirect with no history?
3861 if ( !$nt->isSingleRevRedirect() ) {
3862 wfDebug( __METHOD__
. ": not a one-rev redirect\n" );
3865 # Get the article text
3866 $rev = Revision
::newFromTitle( $nt );
3867 if( !is_object( $rev ) ){
3870 $content = $rev->getContent();
3871 # Does the redirect point to the source?
3872 # Or is it a broken self-redirect, usually caused by namespace collisions?
3873 $redirTitle = $content->getRedirectTarget();
3875 if ( $redirTitle ) {
3876 if ( $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() &&
3877 $redirTitle->getPrefixedDBkey() != $nt->getPrefixedDBkey() ) {
3878 wfDebug( __METHOD__
. ": redirect points to other page\n" );
3884 # Fail safe (not a redirect after all. strange.)
3885 wfDebug( __METHOD__
. ": failsafe: database sais " . $nt->getPrefixedDBkey() . " is a redirect, but it doesn't contain a valid redirect.\n" );
3891 * Get categories to which this Title belongs and return an array of
3892 * categories' names.
3894 * @return Array of parents in the form:
3895 * $parent => $currentarticle
3897 public function getParentCategories() {
3902 $titleKey = $this->getArticleID();
3904 if ( $titleKey === 0 ) {
3908 $dbr = wfGetDB( DB_SLAVE
);
3910 $res = $dbr->select( 'categorylinks', '*',
3912 'cl_from' => $titleKey,
3918 if ( $dbr->numRows( $res ) > 0 ) {
3919 foreach ( $res as $row ) {
3920 // $data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$row->cl_to);
3921 $data[$wgContLang->getNSText( NS_CATEGORY
) . ':' . $row->cl_to
] = $this->getFullText();
3928 * Get a tree of parent categories
3930 * @param $children Array with the children in the keys, to check for circular refs
3931 * @return Array Tree of parent categories
3933 public function getParentCategoryTree( $children = array() ) {
3935 $parents = $this->getParentCategories();
3938 foreach ( $parents as $parent => $current ) {
3939 if ( array_key_exists( $parent, $children ) ) {
3940 # Circular reference
3941 $stack[$parent] = array();
3943 $nt = Title
::newFromText( $parent );
3945 $stack[$parent] = $nt->getParentCategoryTree( $children +
array( $parent => 1 ) );
3955 * Get an associative array for selecting this title from
3958 * @return Array suitable for the $where parameter of DB::select()
3960 public function pageCond() {
3961 if ( $this->mArticleID
> 0 ) {
3962 // PK avoids secondary lookups in InnoDB, shouldn't hurt other DBs
3963 return array( 'page_id' => $this->mArticleID
);
3965 return array( 'page_namespace' => $this->mNamespace
, 'page_title' => $this->mDbkeyform
);
3970 * Get the revision ID of the previous revision
3972 * @param $revId Int Revision ID. Get the revision that was before this one.
3973 * @param $flags Int Title::GAID_FOR_UPDATE
3974 * @return Int|Bool Old revision ID, or FALSE if none exists
3976 public function getPreviousRevisionID( $revId, $flags = 0 ) {
3977 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
3978 $revId = $db->selectField( 'revision', 'rev_id',
3980 'rev_page' => $this->getArticleID( $flags ),
3981 'rev_id < ' . intval( $revId )
3984 array( 'ORDER BY' => 'rev_id DESC' )
3987 if ( $revId === false ) {
3990 return intval( $revId );
3995 * Get the revision ID of the next revision
3997 * @param $revId Int Revision ID. Get the revision that was after this one.
3998 * @param $flags Int Title::GAID_FOR_UPDATE
3999 * @return Int|Bool Next revision ID, or FALSE if none exists
4001 public function getNextRevisionID( $revId, $flags = 0 ) {
4002 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
4003 $revId = $db->selectField( 'revision', 'rev_id',
4005 'rev_page' => $this->getArticleID( $flags ),
4006 'rev_id > ' . intval( $revId )
4009 array( 'ORDER BY' => 'rev_id' )
4012 if ( $revId === false ) {
4015 return intval( $revId );
4020 * Get the first revision of the page
4022 * @param $flags Int Title::GAID_FOR_UPDATE
4023 * @return Revision|Null if page doesn't exist
4025 public function getFirstRevision( $flags = 0 ) {
4026 $pageId = $this->getArticleID( $flags );
4028 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
4029 $row = $db->selectRow( 'revision', Revision
::selectFields(),
4030 array( 'rev_page' => $pageId ),
4032 array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 1 )
4035 return new Revision( $row );
4042 * Get the oldest revision timestamp of this page
4044 * @param $flags Int Title::GAID_FOR_UPDATE
4045 * @return String: MW timestamp
4047 public function getEarliestRevTime( $flags = 0 ) {
4048 $rev = $this->getFirstRevision( $flags );
4049 return $rev ?
$rev->getTimestamp() : null;
4053 * Check if this is a new page
4057 public function isNewPage() {
4058 $dbr = wfGetDB( DB_SLAVE
);
4059 return (bool)$dbr->selectField( 'page', 'page_is_new', $this->pageCond(), __METHOD__
);
4063 * Check whether the number of revisions of this page surpasses $wgDeleteRevisionsLimit
4067 public function isBigDeletion() {
4068 global $wgDeleteRevisionsLimit;
4070 if ( !$wgDeleteRevisionsLimit ) {
4074 $revCount = $this->estimateRevisionCount();
4075 return $revCount > $wgDeleteRevisionsLimit;
4079 * Get the approximate revision count of this page.
4083 public function estimateRevisionCount() {
4084 if ( !$this->exists() ) {
4088 if ( $this->mEstimateRevisions
=== null ) {
4089 $dbr = wfGetDB( DB_SLAVE
);
4090 $this->mEstimateRevisions
= $dbr->estimateRowCount( 'revision', '*',
4091 array( 'rev_page' => $this->getArticleID() ), __METHOD__
);
4094 return $this->mEstimateRevisions
;
4098 * Get the number of revisions between the given revision.
4099 * Used for diffs and other things that really need it.
4101 * @param $old int|Revision Old revision or rev ID (first before range)
4102 * @param $new int|Revision New revision or rev ID (first after range)
4103 * @return Int Number of revisions between these revisions.
4105 public function countRevisionsBetween( $old, $new ) {
4106 if ( !( $old instanceof Revision
) ) {
4107 $old = Revision
::newFromTitle( $this, (int)$old );
4109 if ( !( $new instanceof Revision
) ) {
4110 $new = Revision
::newFromTitle( $this, (int)$new );
4112 if ( !$old ||
!$new ) {
4113 return 0; // nothing to compare
4115 $dbr = wfGetDB( DB_SLAVE
);
4116 return (int)$dbr->selectField( 'revision', 'count(*)',
4118 'rev_page' => $this->getArticleID(),
4119 'rev_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4120 'rev_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4127 * Get the number of authors between the given revision IDs.
4128 * Used for diffs and other things that really need it.
4130 * @param $old int|Revision Old revision or rev ID (first before range)
4131 * @param $new int|Revision New revision or rev ID (first after range)
4132 * @param $limit Int Maximum number of authors
4133 * @return Int Number of revision authors between these revisions.
4135 public function countAuthorsBetween( $old, $new, $limit ) {
4136 if ( !( $old instanceof Revision
) ) {
4137 $old = Revision
::newFromTitle( $this, (int)$old );
4139 if ( !( $new instanceof Revision
) ) {
4140 $new = Revision
::newFromTitle( $this, (int)$new );
4142 if ( !$old ||
!$new ) {
4143 return 0; // nothing to compare
4145 $dbr = wfGetDB( DB_SLAVE
);
4146 $res = $dbr->select( 'revision', 'DISTINCT rev_user_text',
4148 'rev_page' => $this->getArticleID(),
4149 'rev_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4150 'rev_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4152 array( 'LIMIT' => $limit +
1 ) // add one so caller knows it was truncated
4154 return (int)$dbr->numRows( $res );
4158 * Compare with another title.
4160 * @param $title Title
4163 public function equals( Title
$title ) {
4164 // Note: === is necessary for proper matching of number-like titles.
4165 return $this->getInterwiki() === $title->getInterwiki()
4166 && $this->getNamespace() == $title->getNamespace()
4167 && $this->getDBkey() === $title->getDBkey();
4171 * Check if this title is a subpage of another title
4173 * @param $title Title
4176 public function isSubpageOf( Title
$title ) {
4177 return $this->getInterwiki() === $title->getInterwiki()
4178 && $this->getNamespace() == $title->getNamespace()
4179 && strpos( $this->getDBkey(), $title->getDBkey() . '/' ) === 0;
4183 * Check if page exists. For historical reasons, this function simply
4184 * checks for the existence of the title in the page table, and will
4185 * thus return false for interwiki links, special pages and the like.
4186 * If you want to know if a title can be meaningfully viewed, you should
4187 * probably call the isKnown() method instead.
4191 public function exists() {
4192 return $this->getArticleID() != 0;
4196 * Should links to this title be shown as potentially viewable (i.e. as
4197 * "bluelinks"), even if there's no record by this title in the page
4200 * This function is semi-deprecated for public use, as well as somewhat
4201 * misleadingly named. You probably just want to call isKnown(), which
4202 * calls this function internally.
4204 * (ISSUE: Most of these checks are cheap, but the file existence check
4205 * can potentially be quite expensive. Including it here fixes a lot of
4206 * existing code, but we might want to add an optional parameter to skip
4207 * it and any other expensive checks.)
4211 public function isAlwaysKnown() {
4215 * Allows overriding default behaviour for determining if a page exists.
4216 * If $isKnown is kept as null, regular checks happen. If it's
4217 * a boolean, this value is returned by the isKnown method.
4221 * @param Title $title
4222 * @param boolean|null $isKnown
4224 wfRunHooks( 'TitleIsAlwaysKnown', array( $this, &$isKnown ) );
4226 if ( !is_null( $isKnown ) ) {
4230 if ( $this->mInterwiki
!= '' ) {
4231 return true; // any interwiki link might be viewable, for all we know
4234 switch( $this->mNamespace
) {
4237 // file exists, possibly in a foreign repo
4238 return (bool)wfFindFile( $this );
4240 // valid special page
4241 return SpecialPageFactory
::exists( $this->getDBkey() );
4243 // selflink, possibly with fragment
4244 return $this->mDbkeyform
== '';
4246 // known system message
4247 return $this->hasSourceText() !== false;
4254 * Does this title refer to a page that can (or might) be meaningfully
4255 * viewed? In particular, this function may be used to determine if
4256 * links to the title should be rendered as "bluelinks" (as opposed to
4257 * "redlinks" to non-existent pages).
4258 * Adding something else to this function will cause inconsistency
4259 * since LinkHolderArray calls isAlwaysKnown() and does its own
4260 * page existence check.
4264 public function isKnown() {
4265 return $this->isAlwaysKnown() ||
$this->exists();
4269 * Does this page have source text?
4273 public function hasSourceText() {
4274 if ( $this->exists() ) {
4278 if ( $this->mNamespace
== NS_MEDIAWIKI
) {
4279 // If the page doesn't exist but is a known system message, default
4280 // message content will be displayed, same for language subpages-
4281 // Use always content language to avoid loading hundreds of languages
4282 // to get the link color.
4284 list( $name, $lang ) = MessageCache
::singleton()->figureMessage( $wgContLang->lcfirst( $this->getText() ) );
4285 $message = wfMessage( $name )->inLanguage( $wgContLang )->useDatabase( false );
4286 return $message->exists();
4293 * Get the default message text or false if the message doesn't exist
4295 * @return String or false
4297 public function getDefaultMessageText() {
4300 if ( $this->getNamespace() != NS_MEDIAWIKI
) { // Just in case
4304 list( $name, $lang ) = MessageCache
::singleton()->figureMessage( $wgContLang->lcfirst( $this->getText() ) );
4305 $message = wfMessage( $name )->inLanguage( $lang )->useDatabase( false );
4307 if ( $message->exists() ) {
4308 return $message->plain();
4315 * Updates page_touched for this page; called from LinksUpdate.php
4317 * @return Bool true if the update succeded
4319 public function invalidateCache() {
4320 if ( wfReadOnly() ) {
4323 $dbw = wfGetDB( DB_MASTER
);
4324 $success = $dbw->update(
4326 array( 'page_touched' => $dbw->timestamp() ),
4330 HTMLFileCache
::clearFileCache( $this );
4335 * Update page_touched timestamps and send squid purge messages for
4336 * pages linking to this title. May be sent to the job queue depending
4337 * on the number of links. Typically called on create and delete.
4339 public function touchLinks() {
4340 $u = new HTMLCacheUpdate( $this, 'pagelinks' );
4343 if ( $this->getNamespace() == NS_CATEGORY
) {
4344 $u = new HTMLCacheUpdate( $this, 'categorylinks' );
4350 * Get the last touched timestamp
4352 * @param $db DatabaseBase: optional db
4353 * @return String last-touched timestamp
4355 public function getTouched( $db = null ) {
4356 $db = isset( $db ) ?
$db : wfGetDB( DB_SLAVE
);
4357 $touched = $db->selectField( 'page', 'page_touched', $this->pageCond(), __METHOD__
);
4362 * Get the timestamp when this page was updated since the user last saw it.
4365 * @return String|Null
4367 public function getNotificationTimestamp( $user = null ) {
4368 global $wgUser, $wgShowUpdatedMarker;
4369 // Assume current user if none given
4373 // Check cache first
4374 $uid = $user->getId();
4375 // avoid isset here, as it'll return false for null entries
4376 if ( array_key_exists( $uid, $this->mNotificationTimestamp
) ) {
4377 return $this->mNotificationTimestamp
[$uid];
4379 if ( !$uid ||
!$wgShowUpdatedMarker ) {
4380 return $this->mNotificationTimestamp
[$uid] = false;
4382 // Don't cache too much!
4383 if ( count( $this->mNotificationTimestamp
) >= self
::CACHE_MAX
) {
4384 $this->mNotificationTimestamp
= array();
4386 $dbr = wfGetDB( DB_SLAVE
);
4387 $this->mNotificationTimestamp
[$uid] = $dbr->selectField( 'watchlist',
4388 'wl_notificationtimestamp',
4390 'wl_user' => $user->getId(),
4391 'wl_namespace' => $this->getNamespace(),
4392 'wl_title' => $this->getDBkey(),
4396 return $this->mNotificationTimestamp
[$uid];
4400 * Generate strings used for xml 'id' names in monobook tabs
4402 * @param $prepend string defaults to 'nstab-'
4403 * @return String XML 'id' name
4405 public function getNamespaceKey( $prepend = 'nstab-' ) {
4407 // Gets the subject namespace if this title
4408 $namespace = MWNamespace
::getSubject( $this->getNamespace() );
4409 // Checks if cononical namespace name exists for namespace
4410 if ( MWNamespace
::exists( $this->getNamespace() ) ) {
4411 // Uses canonical namespace name
4412 $namespaceKey = MWNamespace
::getCanonicalName( $namespace );
4414 // Uses text of namespace
4415 $namespaceKey = $this->getSubjectNsText();
4417 // Makes namespace key lowercase
4418 $namespaceKey = $wgContLang->lc( $namespaceKey );
4420 if ( $namespaceKey == '' ) {
4421 $namespaceKey = 'main';
4423 // Changes file to image for backwards compatibility
4424 if ( $namespaceKey == 'file' ) {
4425 $namespaceKey = 'image';
4427 return $prepend . $namespaceKey;
4431 * Get all extant redirects to this Title
4433 * @param $ns Int|Null Single namespace to consider; NULL to consider all namespaces
4434 * @return Array of Title redirects to this title
4436 public function getRedirectsHere( $ns = null ) {
4439 $dbr = wfGetDB( DB_SLAVE
);
4441 'rd_namespace' => $this->getNamespace(),
4442 'rd_title' => $this->getDBkey(),
4445 if ( !is_null( $ns ) ) {
4446 $where['page_namespace'] = $ns;
4449 $res = $dbr->select(
4450 array( 'redirect', 'page' ),
4451 array( 'page_namespace', 'page_title' ),
4456 foreach ( $res as $row ) {
4457 $redirs[] = self
::newFromRow( $row );
4463 * Check if this Title is a valid redirect target
4467 public function isValidRedirectTarget() {
4468 global $wgInvalidRedirectTargets;
4470 // invalid redirect targets are stored in a global array, but explicity disallow Userlogout here
4471 if ( $this->isSpecial( 'Userlogout' ) ) {
4475 foreach ( $wgInvalidRedirectTargets as $target ) {
4476 if ( $this->isSpecial( $target ) ) {
4485 * Get a backlink cache object
4487 * @return BacklinkCache
4489 function getBacklinkCache() {
4490 if ( is_null( $this->mBacklinkCache
) ) {
4491 $this->mBacklinkCache
= new BacklinkCache( $this );
4493 return $this->mBacklinkCache
;
4497 * Whether the magic words __INDEX__ and __NOINDEX__ function for this page.
4501 public function canUseNoindex() {
4502 global $wgContentNamespaces, $wgExemptFromUserRobotsControl;
4504 $bannedNamespaces = is_null( $wgExemptFromUserRobotsControl )
4505 ?
$wgContentNamespaces
4506 : $wgExemptFromUserRobotsControl;
4508 return !in_array( $this->mNamespace
, $bannedNamespaces );
4513 * Returns the raw sort key to be used for categories, with the specified
4514 * prefix. This will be fed to Collation::getSortKey() to get a
4515 * binary sortkey that can be used for actual sorting.
4517 * @param $prefix string The prefix to be used, specified using
4518 * {{defaultsort:}} or like [[Category:Foo|prefix]]. Empty for no
4522 public function getCategorySortkey( $prefix = '' ) {
4523 $unprefixed = $this->getText();
4525 // Anything that uses this hook should only depend
4526 // on the Title object passed in, and should probably
4527 // tell the users to run updateCollations.php --force
4528 // in order to re-sort existing category relations.
4529 wfRunHooks( 'GetDefaultSortkey', array( $this, &$unprefixed ) );
4530 if ( $prefix !== '' ) {
4531 # Separate with a line feed, so the unprefixed part is only used as
4532 # a tiebreaker when two pages have the exact same prefix.
4533 # In UCA, tab is the only character that can sort above LF
4534 # so we strip both of them from the original prefix.
4535 $prefix = strtr( $prefix, "\n\t", ' ' );
4536 return "$prefix\n$unprefixed";
4542 * Get the language in which the content of this page is written.
4543 * Defaults to $wgContLang, but in certain cases it can be e.g.
4544 * $wgLang (such as special pages, which are in the user language).
4549 public function getPageLanguage() {
4551 if ( $this->isSpecialPage() ) {
4552 // special pages are in the user language
4554 } elseif ( $this->getNamespace() == NS_MEDIAWIKI
) {
4555 // Parse mediawiki messages with correct target language
4556 list( /* $unused */, $lang ) = MessageCache
::singleton()->figureMessage( $this->getText() );
4557 return wfGetLangObj( $lang );
4560 //TODO: use the LinkCache to cache this!
4561 //NOTE: ContentHandler::getPageLanguage() may need to load the content to determine the page language!
4562 $contentHandler = ContentHandler
::getForTitle( $this );
4563 $pageLang = $contentHandler->getPageLanguage( $this );
4565 // Hook at the end because we don't want to override the above stuff
4566 wfRunHooks( 'PageContentLanguage', array( $this, &$pageLang, $wgLang ) );
4567 return wfGetLangObj( $pageLang );