5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
24 * Represents a title within MediaWiki.
25 * Optionally may contain an interwiki designation or namespace.
26 * @note This class can fetch various kinds of data from the database;
27 * however, it does so inefficiently.
29 * @internal documentation reviewed 15 Mar 2010
32 /** @name Static cache variables */
34 static private $titleCache = array();
38 * Title::newFromText maintains a cache to avoid expensive re-normalization of
39 * commonly used titles. On a batch operation this can become a memory leak
40 * if not bounded. After hitting this many titles reset the cache.
42 const CACHE_MAX
= 1000;
45 * Used to be GAID_FOR_UPDATE define. Used with getArticleID() and friends
46 * to use the master DB
48 const GAID_FOR_UPDATE
= 1;
51 * @name Private member variables
52 * Please use the accessor functions instead.
57 var $mTextform = ''; // /< Text form (spaces not underscores) of the main part
58 var $mUrlform = ''; // /< URL-encoded form of the main part
59 var $mDbkeyform = ''; // /< Main part with underscores
60 var $mUserCaseDBKey; // /< DB key with the initial letter in the case specified by the user
61 var $mNamespace = NS_MAIN
; // /< Namespace index, i.e. one of the NS_xxxx constants
62 var $mInterwiki = ''; // /< Interwiki prefix (or null string)
63 var $mFragment; // /< Title fragment (i.e. the bit after the #)
64 var $mArticleID = -1; // /< Article ID, fetched from the link cache on demand
65 var $mLatestID = false; // /< ID of most recent revision
66 var $mCounter = -1; // /< Number of times this page has been viewed (-1 means "not loaded")
67 var $mRestrictions = array(); // /< Array of groups allowed to edit this article
68 var $mOldRestrictions = false;
69 var $mCascadeRestriction; ///< Cascade restrictions on this page to included templates and images?
70 var $mCascadingRestrictions; // Caching the results of getCascadeProtectionSources
71 var $mRestrictionsExpiry = array(); ///< When do the restrictions on this page expire?
72 var $mHasCascadingRestrictions; ///< Are cascading restrictions in effect on this page?
73 var $mCascadeSources; ///< Where are the cascading restrictions coming from on this page?
74 var $mRestrictionsLoaded = false; ///< Boolean for initialisation on demand
75 var $mPrefixedText; ///< Text form including namespace/interwiki, initialised on demand
76 var $mTitleProtection; ///< Cached value for getTitleProtection (create protection)
77 # Don't change the following default, NS_MAIN is hardcoded in several
78 # places. See bug 696.
79 var $mDefaultNamespace = NS_MAIN
; // /< Namespace index when there is no namespace
80 # Zero except in {{transclusion}} tags
81 var $mWatched = null; // /< Is $wgUser watching this page? null if unfilled, accessed through userIsWatching()
82 var $mLength = -1; // /< The page length, 0 for special pages
83 var $mRedirect = null; // /< Is the article at this title a redirect?
84 var $mNotificationTimestamp = array(); // /< Associative array of user ID -> timestamp/false
85 var $mBacklinkCache = null; // /< Cache of links to this title
92 /*protected*/ function __construct() { }
95 * Create a new Title from a prefixed DB key
97 * @param $key String the database key, which has underscores
98 * instead of spaces, possibly including namespace and
100 * @return Title, or NULL on an error
102 public static function newFromDBkey( $key ) {
104 $t->mDbkeyform
= $key;
105 if ( $t->secureAndSplit() ) {
113 * Create a new Title from text, such as what one would find in a link. De-
114 * codes any HTML entities in the text.
116 * @param $text String the link text; spaces, prefixes, and an
117 * initial ':' indicating the main namespace are accepted.
118 * @param $defaultNamespace Int the namespace to use if none is speci-
119 * fied by a prefix. If you want to force a specific namespace even if
120 * $text might begin with a namespace prefix, use makeTitle() or
122 * @return Title, or null on an error.
124 public static function newFromText( $text, $defaultNamespace = NS_MAIN
) {
125 if ( is_object( $text ) ) {
126 throw new MWException( 'Title::newFromText given an object' );
130 * Wiki pages often contain multiple links to the same page.
131 * Title normalization and parsing can become expensive on
132 * pages with many links, so we can save a little time by
135 * In theory these are value objects and won't get changed...
137 if ( $defaultNamespace == NS_MAIN
&& isset( Title
::$titleCache[$text] ) ) {
138 return Title
::$titleCache[$text];
141 # Convert things like é ā or 〗 into normalized (bug 14952) text
142 $filteredText = Sanitizer
::decodeCharReferencesAndNormalize( $text );
145 $t->mDbkeyform
= str_replace( ' ', '_', $filteredText );
146 $t->mDefaultNamespace
= $defaultNamespace;
148 static $cachedcount = 0 ;
149 if ( $t->secureAndSplit() ) {
150 if ( $defaultNamespace == NS_MAIN
) {
151 if ( $cachedcount >= self
::CACHE_MAX
) {
152 # Avoid memory leaks on mass operations...
153 Title
::$titleCache = array();
157 Title
::$titleCache[$text] =& $t;
167 * THIS IS NOT THE FUNCTION YOU WANT. Use Title::newFromText().
169 * Example of wrong and broken code:
170 * $title = Title::newFromURL( $wgRequest->getVal( 'title' ) );
172 * Example of right code:
173 * $title = Title::newFromText( $wgRequest->getVal( 'title' ) );
175 * Create a new Title from URL-encoded text. Ensures that
176 * the given title's length does not exceed the maximum.
178 * @param $url String the title, as might be taken from a URL
179 * @return Title the new object, or NULL on an error
181 public static function newFromURL( $url ) {
182 global $wgLegalTitleChars;
185 # For compatibility with old buggy URLs. "+" is usually not valid in titles,
186 # but some URLs used it as a space replacement and they still come
187 # from some external search tools.
188 if ( strpos( $wgLegalTitleChars, '+' ) === false ) {
189 $url = str_replace( '+', ' ', $url );
192 $t->mDbkeyform
= str_replace( ' ', '_', $url );
193 if ( $t->secureAndSplit() ) {
201 * Create a new Title from an article ID
203 * @param $id Int the page_id corresponding to the Title to create
204 * @param $flags Int use Title::GAID_FOR_UPDATE to use master
205 * @return Title the new object, or NULL on an error
207 public static function newFromID( $id, $flags = 0 ) {
208 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
209 $row = $db->selectRow( 'page', '*', array( 'page_id' => $id ), __METHOD__
);
210 if ( $row !== false ) {
211 $title = Title
::newFromRow( $row );
219 * Make an array of titles from an array of IDs
221 * @param $ids Array of Int Array of IDs
222 * @return Array of Titles
224 public static function newFromIDs( $ids ) {
225 if ( !count( $ids ) ) {
228 $dbr = wfGetDB( DB_SLAVE
);
233 'page_namespace', 'page_title', 'page_id',
234 'page_len', 'page_is_redirect', 'page_latest',
236 array( 'page_id' => $ids ),
241 foreach ( $res as $row ) {
242 $titles[] = Title
::newFromRow( $row );
248 * Make a Title object from a DB row
250 * @param $row Object database row (needs at least page_title,page_namespace)
251 * @return Title corresponding Title
253 public static function newFromRow( $row ) {
254 $t = self
::makeTitle( $row->page_namespace
, $row->page_title
);
255 $t->loadFromRow( $row );
260 * Load Title object fields from a DB row.
261 * If false is given, the title will be treated as non-existing.
263 * @param $row Object|false database row
266 public function loadFromRow( $row ) {
267 if ( $row ) { // page found
268 if ( isset( $row->page_id
) )
269 $this->mArticleID
= (int)$row->page_id
;
270 if ( isset( $row->page_len
) )
271 $this->mLength
= (int)$row->page_len
;
272 if ( isset( $row->page_is_redirect
) )
273 $this->mRedirect
= (bool)$row->page_is_redirect
;
274 if ( isset( $row->page_latest
) )
275 $this->mLatestID
= (int)$row->page_latest
;
276 if ( isset( $row->page_counter
) )
277 $this->mCounter
= (int)$row->page_counter
;
278 } else { // page not found
279 $this->mArticleID
= 0;
281 $this->mRedirect
= false;
282 $this->mLatestID
= 0;
288 * Create a new Title from a namespace index and a DB key.
289 * It's assumed that $ns and $title are *valid*, for instance when
290 * they came directly from the database or a special page name.
291 * For convenience, spaces are converted to underscores so that
292 * eg user_text fields can be used directly.
294 * @param $ns Int the namespace of the article
295 * @param $title String the unprefixed database key form
296 * @param $fragment String the link fragment (after the "#")
297 * @param $interwiki String the interwiki prefix
298 * @return Title the new object
300 public static function &makeTitle( $ns, $title, $fragment = '', $interwiki = '' ) {
302 $t->mInterwiki
= $interwiki;
303 $t->mFragment
= $fragment;
304 $t->mNamespace
= $ns = intval( $ns );
305 $t->mDbkeyform
= str_replace( ' ', '_', $title );
306 $t->mArticleID
= ( $ns >= 0 ) ?
-1 : 0;
307 $t->mUrlform
= wfUrlencode( $t->mDbkeyform
);
308 $t->mTextform
= str_replace( '_', ' ', $title );
313 * Create a new Title from a namespace index and a DB key.
314 * The parameters will be checked for validity, which is a bit slower
315 * than makeTitle() but safer for user-provided data.
317 * @param $ns Int the namespace of the article
318 * @param $title String database key form
319 * @param $fragment String the link fragment (after the "#")
320 * @param $interwiki String interwiki prefix
321 * @return Title the new object, or NULL on an error
323 public static function makeTitleSafe( $ns, $title, $fragment = '', $interwiki = '' ) {
325 $t->mDbkeyform
= Title
::makeName( $ns, $title, $fragment, $interwiki );
326 if ( $t->secureAndSplit() ) {
334 * Create a new Title for the Main Page
336 * @return Title the new object
338 public static function newMainPage() {
339 $title = Title
::newFromText( wfMsgForContent( 'mainpage' ) );
340 // Don't give fatal errors if the message is broken
342 $title = Title
::newFromText( 'Main Page' );
348 * Extract a redirect destination from a string and return the
349 * Title, or null if the text doesn't contain a valid redirect
350 * This will only return the very next target, useful for
351 * the redirect table and other checks that don't need full recursion
353 * @param $text String: Text with possible redirect
354 * @return Title: The corresponding Title
356 public static function newFromRedirect( $text ) {
357 return self
::newFromRedirectInternal( $text );
361 * Extract a redirect destination from a string and return the
362 * Title, or null if the text doesn't contain a valid redirect
363 * This will recurse down $wgMaxRedirects times or until a non-redirect target is hit
364 * in order to provide (hopefully) the Title of the final destination instead of another redirect
366 * @param $text String Text with possible redirect
369 public static function newFromRedirectRecurse( $text ) {
370 $titles = self
::newFromRedirectArray( $text );
371 return $titles ?
array_pop( $titles ) : null;
375 * Extract a redirect destination from a string and return an
376 * array of Titles, or null if the text doesn't contain a valid redirect
377 * The last element in the array is the final destination after all redirects
378 * have been resolved (up to $wgMaxRedirects times)
380 * @param $text String Text with possible redirect
381 * @return Array of Titles, with the destination last
383 public static function newFromRedirectArray( $text ) {
384 global $wgMaxRedirects;
385 $title = self
::newFromRedirectInternal( $text );
386 if ( is_null( $title ) ) {
389 // recursive check to follow double redirects
390 $recurse = $wgMaxRedirects;
391 $titles = array( $title );
392 while ( --$recurse > 0 ) {
393 if ( $title->isRedirect() ) {
394 $page = WikiPage
::factory( $title );
395 $newtitle = $page->getRedirectTarget();
399 // Redirects to some special pages are not permitted
400 if ( $newtitle instanceOf Title
&& $newtitle->isValidRedirectTarget() ) {
401 // the new title passes the checks, so make that our current title so that further recursion can be checked
403 $titles[] = $newtitle;
412 * Really extract the redirect destination
413 * Do not call this function directly, use one of the newFromRedirect* functions above
415 * @param $text String Text with possible redirect
418 protected static function newFromRedirectInternal( $text ) {
419 global $wgMaxRedirects;
420 if ( $wgMaxRedirects < 1 ) {
421 //redirects are disabled, so quit early
424 $redir = MagicWord
::get( 'redirect' );
425 $text = trim( $text );
426 if ( $redir->matchStartAndRemove( $text ) ) {
427 // Extract the first link and see if it's usable
428 // Ensure that it really does come directly after #REDIRECT
429 // Some older redirects included a colon, so don't freak about that!
431 if ( preg_match( '!^\s*:?\s*\[{2}(.*?)(?:\|.*?)?\]{2}!', $text, $m ) ) {
432 // Strip preceding colon used to "escape" categories, etc.
433 // and URL-decode links
434 if ( strpos( $m[1], '%' ) !== false ) {
435 // Match behavior of inline link parsing here;
436 $m[1] = rawurldecode( ltrim( $m[1], ':' ) );
438 $title = Title
::newFromText( $m[1] );
439 // If the title is a redirect to bad special pages or is invalid, return null
440 if ( !$title instanceof Title ||
!$title->isValidRedirectTarget() ) {
450 * Get the prefixed DB key associated with an ID
452 * @param $id Int the page_id of the article
453 * @return Title an object representing the article, or NULL if no such article was found
455 public static function nameOf( $id ) {
456 $dbr = wfGetDB( DB_SLAVE
);
458 $s = $dbr->selectRow(
460 array( 'page_namespace', 'page_title' ),
461 array( 'page_id' => $id ),
464 if ( $s === false ) {
468 $n = self
::makeName( $s->page_namespace
, $s->page_title
);
473 * Get a regex character class describing the legal characters in a link
475 * @return String the list of characters, not delimited
477 public static function legalChars() {
478 global $wgLegalTitleChars;
479 return $wgLegalTitleChars;
483 * Returns a simple regex that will match on characters and sequences invalid in titles.
484 * Note that this doesn't pick up many things that could be wrong with titles, but that
485 * replacing this regex with something valid will make many titles valid.
487 * @return String regex string
489 static function getTitleInvalidRegex() {
490 static $rxTc = false;
492 # Matching titles will be held as illegal.
494 # Any character not allowed is forbidden...
495 '[^' . self
::legalChars() . ']' .
496 # URL percent encoding sequences interfere with the ability
497 # to round-trip titles -- you can't link to them consistently.
499 # XML/HTML character references produce similar issues.
500 '|&[A-Za-z0-9\x80-\xff]+;' .
502 '|&#x[0-9A-Fa-f]+;' .
510 * Get a string representation of a title suitable for
511 * including in a search index
513 * @param $ns Int a namespace index
514 * @param $title String text-form main part
515 * @return String a stripped-down title string ready for the search index
517 public static function indexTitle( $ns, $title ) {
520 $lc = SearchEngine
::legalSearchChars() . '&#;';
521 $t = $wgContLang->normalizeForSearch( $title );
522 $t = preg_replace( "/[^{$lc}]+/", ' ', $t );
523 $t = $wgContLang->lc( $t );
526 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
527 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
529 $t = preg_replace( "/\\s+/", ' ', $t );
531 if ( $ns == NS_FILE
) {
532 $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
538 * Make a prefixed DB key from a DB key and a namespace index
540 * @param $ns Int numerical representation of the namespace
541 * @param $title String the DB key form the title
542 * @param $fragment String The link fragment (after the "#")
543 * @param $interwiki String The interwiki prefix
544 * @return String the prefixed form of the title
546 public static function makeName( $ns, $title, $fragment = '', $interwiki = '' ) {
549 $namespace = $wgContLang->getNsText( $ns );
550 $name = $namespace == '' ?
$title : "$namespace:$title";
551 if ( strval( $interwiki ) != '' ) {
552 $name = "$interwiki:$name";
554 if ( strval( $fragment ) != '' ) {
555 $name .= '#' . $fragment;
561 * Escape a text fragment, say from a link, for a URL
563 * @param $fragment string containing a URL or link fragment (after the "#")
564 * @return String: escaped string
566 static function escapeFragmentForURL( $fragment ) {
567 # Note that we don't urlencode the fragment. urlencoded Unicode
568 # fragments appear not to work in IE (at least up to 7) or in at least
569 # one version of Opera 9.x. The W3C validator, for one, doesn't seem
570 # to care if they aren't encoded.
571 return Sanitizer
::escapeId( $fragment, 'noninitial' );
575 * Callback for usort() to do title sorts by (namespace, title)
580 * @return Integer: result of string comparison, or namespace comparison
582 public static function compare( $a, $b ) {
583 if ( $a->getNamespace() == $b->getNamespace() ) {
584 return strcmp( $a->getText(), $b->getText() );
586 return $a->getNamespace() - $b->getNamespace();
591 * Determine whether the object refers to a page within
594 * @return Bool TRUE if this is an in-project interwiki link or a wikilink, FALSE otherwise
596 public function isLocal() {
597 if ( $this->mInterwiki
!= '' ) {
598 return Interwiki
::fetch( $this->mInterwiki
)->isLocal();
605 * Is this Title interwiki?
609 public function isExternal() {
610 return ( $this->mInterwiki
!= '' );
614 * Get the interwiki prefix (or null string)
616 * @return String Interwiki prefix
618 public function getInterwiki() {
619 return $this->mInterwiki
;
623 * Determine whether the object refers to a page within
624 * this project and is transcludable.
626 * @return Bool TRUE if this is transcludable
628 public function isTrans() {
629 if ( $this->mInterwiki
== '' ) {
633 return Interwiki
::fetch( $this->mInterwiki
)->isTranscludable();
637 * Returns the DB name of the distant wiki which owns the object.
639 * @return String the DB name
641 public function getTransWikiID() {
642 if ( $this->mInterwiki
== '' ) {
646 return Interwiki
::fetch( $this->mInterwiki
)->getWikiID();
650 * Get the text form (spaces not underscores) of the main part
652 * @return String Main part of the title
654 public function getText() {
655 return $this->mTextform
;
659 * Get the URL-encoded form of the main part
661 * @return String Main part of the title, URL-encoded
663 public function getPartialURL() {
664 return $this->mUrlform
;
668 * Get the main part with underscores
670 * @return String: Main part of the title, with underscores
672 public function getDBkey() {
673 return $this->mDbkeyform
;
677 * Get the DB key with the initial letter case as specified by the user
679 * @return String DB key
681 function getUserCaseDBKey() {
682 return $this->mUserCaseDBKey
;
686 * Get the namespace index, i.e. one of the NS_xxxx constants.
688 * @return Integer: Namespace index
690 public function getNamespace() {
691 return $this->mNamespace
;
695 * Get the namespace text
697 * @return String: Namespace text
699 public function getNsText() {
702 if ( $this->mInterwiki
!= '' ) {
703 // This probably shouldn't even happen. ohh man, oh yuck.
704 // But for interwiki transclusion it sometimes does.
705 // Shit. Shit shit shit.
707 // Use the canonical namespaces if possible to try to
708 // resolve a foreign namespace.
709 if ( MWNamespace
::exists( $this->mNamespace
) ) {
710 return MWNamespace
::getCanonicalName( $this->mNamespace
);
714 // Strip off subpages
715 $pagename = $this->getText();
716 if ( strpos( $pagename, '/' ) !== false ) {
717 list( $username , ) = explode( '/', $pagename, 2 );
719 $username = $pagename;
722 if ( $wgContLang->needsGenderDistinction() &&
723 MWNamespace
::hasGenderDistinction( $this->mNamespace
) ) {
724 $gender = GenderCache
::singleton()->getGenderOf( $username, __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
>= 0 && $this->mNamespace
!= NS_MEDIA
;
771 * Can this title be added to a user's watchlist?
773 * @return Bool TRUE or FALSE
775 public function isWatchable() {
776 return !$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.
870 public function hasSubjectNamespace( $ns ) {
871 return MWNamespace
::subjectEquals( $this->getNamespace(), $ns );
875 * Is this Title in a namespace which contains content?
876 * In other words, is this a content page, for the purposes of calculating
881 public function isContentPage() {
882 return MWNamespace
::isContent( $this->getNamespace() );
886 * Would anybody with sufficient privileges be able to move this page?
887 * Some pages just aren't movable.
889 * @return Bool TRUE or FALSE
891 public function isMovable() {
892 if ( !MWNamespace
::isMovable( $this->getNamespace() ) ||
$this->getInterwiki() != '' ) {
893 // Interwiki title or immovable namespace. Hooks don't get to override here
898 wfRunHooks( 'TitleIsMovable', array( $this, &$result ) );
903 * Is this the mainpage?
904 * @note Title::newFromText seams to be sufficiently optimized by the title
905 * cache that we don't need to over-optimize by doing direct comparisons and
906 * acidentally creating new bugs where $title->equals( Title::newFromText() )
907 * ends up reporting something differently than $title->isMainPage();
912 public function isMainPage() {
913 return $this->equals( Title
::newMainPage() );
921 public function isSubpage() {
922 return MWNamespace
::hasSubpages( $this->mNamespace
)
923 ?
strpos( $this->getText(), '/' ) !== false
928 * Is this a conversion table for the LanguageConverter?
932 public function isConversionTable() {
933 return $this->getNamespace() == NS_MEDIAWIKI
&&
934 strpos( $this->getText(), 'Conversiontable' ) !== false;
938 * Does that page contain wikitext, or it is JS, CSS or whatever?
942 public function isWikitextPage() {
943 $retval = !$this->isCssOrJsPage() && !$this->isCssJsSubpage();
944 wfRunHooks( 'TitleIsWikitextPage', array( $this, &$retval ) );
949 * Could this page contain custom CSS or JavaScript, based
954 public function isCssOrJsPage() {
955 $retval = $this->mNamespace
== NS_MEDIAWIKI
956 && preg_match( '!\.(?:css|js)$!u', $this->mTextform
) > 0;
957 wfRunHooks( 'TitleIsCssOrJsPage', array( $this, &$retval ) );
962 * Is this a .css or .js subpage of a user page?
965 public function isCssJsSubpage() {
966 return ( NS_USER
== $this->mNamespace
and preg_match( "/\\/.*\\.(?:css|js)$/", $this->mTextform
) );
970 * Trim down a .css or .js subpage title to get the corresponding skin name
972 * @return string containing skin name from .css or .js subpage title
974 public function getSkinFromCssJsSubpage() {
975 $subpage = explode( '/', $this->mTextform
);
976 $subpage = $subpage[ count( $subpage ) - 1 ];
977 $lastdot = strrpos( $subpage, '.' );
978 if ( $lastdot === false )
979 return $subpage; # Never happens: only called for names ending in '.css' or '.js'
980 return substr( $subpage, 0, $lastdot );
984 * Is this a .css subpage of a user page?
988 public function isCssSubpage() {
989 return ( NS_USER
== $this->mNamespace
&& preg_match( "/\\/.*\\.css$/", $this->mTextform
) );
993 * Is this a .js subpage of a user page?
997 public function isJsSubpage() {
998 return ( NS_USER
== $this->mNamespace
&& preg_match( "/\\/.*\\.js$/", $this->mTextform
) );
1002 * Is this a talk page of some sort?
1006 public function isTalkPage() {
1007 return MWNamespace
::isTalk( $this->getNamespace() );
1011 * Get a Title object associated with the talk page of this article
1013 * @return Title the object for the talk page
1015 public function getTalkPage() {
1016 return Title
::makeTitle( MWNamespace
::getTalk( $this->getNamespace() ), $this->getDBkey() );
1020 * Get a title object associated with the subject page of this
1023 * @return Title the object for the subject page
1025 public function getSubjectPage() {
1026 // Is this the same title?
1027 $subjectNS = MWNamespace
::getSubject( $this->getNamespace() );
1028 if ( $this->getNamespace() == $subjectNS ) {
1031 return Title
::makeTitle( $subjectNS, $this->getDBkey() );
1035 * Get the default namespace index, for when there is no namespace
1037 * @return Int Default namespace index
1039 public function getDefaultNamespace() {
1040 return $this->mDefaultNamespace
;
1044 * Get title for search index
1046 * @return String a stripped-down title string ready for the
1049 public function getIndexTitle() {
1050 return Title
::indexTitle( $this->mNamespace
, $this->mTextform
);
1054 * Get the Title fragment (i.e.\ the bit after the #) in text form
1056 * @return String Title fragment
1058 public function getFragment() {
1059 return $this->mFragment
;
1063 * Get the fragment in URL form, including the "#" character if there is one
1064 * @return String Fragment in URL form
1066 public function getFragmentForURL() {
1067 if ( $this->mFragment
== '' ) {
1070 return '#' . Title
::escapeFragmentForURL( $this->mFragment
);
1075 * Set the fragment for this title. Removes the first character from the
1076 * specified fragment before setting, so it assumes you're passing it with
1079 * Deprecated for public use, use Title::makeTitle() with fragment parameter.
1080 * Still in active use privately.
1082 * @param $fragment String text
1084 public function setFragment( $fragment ) {
1085 $this->mFragment
= str_replace( '_', ' ', substr( $fragment, 1 ) );
1089 * Prefix some arbitrary text with the namespace or interwiki prefix
1092 * @param $name String the text
1093 * @return String the prefixed text
1096 private function prefix( $name ) {
1098 if ( $this->mInterwiki
!= '' ) {
1099 $p = $this->mInterwiki
. ':';
1102 if ( 0 != $this->mNamespace
) {
1103 $p .= $this->getNsText() . ':';
1109 * Get the prefixed database key form
1111 * @return String the prefixed title, with underscores and
1112 * any interwiki and namespace prefixes
1114 public function getPrefixedDBkey() {
1115 $s = $this->prefix( $this->mDbkeyform
);
1116 $s = str_replace( ' ', '_', $s );
1121 * Get the prefixed title with spaces.
1122 * This is the form usually used for display
1124 * @return String the prefixed title, with spaces
1126 public function getPrefixedText() {
1127 // @todo FIXME: Bad usage of empty() ?
1128 if ( empty( $this->mPrefixedText
) ) {
1129 $s = $this->prefix( $this->mTextform
);
1130 $s = str_replace( '_', ' ', $s );
1131 $this->mPrefixedText
= $s;
1133 return $this->mPrefixedText
;
1137 * Return a string representation of this title
1139 * @return String representation of this title
1141 public function __toString() {
1142 return $this->getPrefixedText();
1146 * Get the prefixed title with spaces, plus any fragment
1147 * (part beginning with '#')
1149 * @return String the prefixed title, with spaces and the fragment, including '#'
1151 public function getFullText() {
1152 $text = $this->getPrefixedText();
1153 if ( $this->mFragment
!= '' ) {
1154 $text .= '#' . $this->mFragment
;
1160 * Get the base page name, i.e. the leftmost part before any slashes
1162 * @return String Base name
1164 public function getBaseText() {
1165 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1166 return $this->getText();
1169 $parts = explode( '/', $this->getText() );
1170 # Don't discard the real title if there's no subpage involved
1171 if ( count( $parts ) > 1 ) {
1172 unset( $parts[count( $parts ) - 1] );
1174 return implode( '/', $parts );
1178 * Get the lowest-level subpage name, i.e. the rightmost part after any slashes
1180 * @return String Subpage name
1182 public function getSubpageText() {
1183 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1184 return( $this->mTextform
);
1186 $parts = explode( '/', $this->mTextform
);
1187 return( $parts[count( $parts ) - 1] );
1191 * Get the HTML-escaped displayable text form.
1192 * Used for the title field in <a> tags.
1194 * @return String the text, including any prefixes
1196 public function getEscapedText() {
1197 wfDeprecated( __METHOD__
, '1.19' );
1198 return htmlspecialchars( $this->getPrefixedText() );
1202 * Get a URL-encoded form of the subpage text
1204 * @return String URL-encoded subpage name
1206 public function getSubpageUrlForm() {
1207 $text = $this->getSubpageText();
1208 $text = wfUrlencode( str_replace( ' ', '_', $text ) );
1213 * Get a URL-encoded title (not an actual URL) including interwiki
1215 * @return String the URL-encoded form
1217 public function getPrefixedURL() {
1218 $s = $this->prefix( $this->mDbkeyform
);
1219 $s = wfUrlencode( str_replace( ' ', '_', $s ) );
1224 * Helper to fix up the get{Local,Full,Link,Canonical}URL args
1226 private static function fixUrlQueryArgs( $query, $query2 ) {
1227 if ( is_array( $query ) ) {
1228 $query = wfArrayToCGI( $query );
1231 if ( is_string( $query2 ) ) {
1232 // $query2 is a string, we will consider this to be
1233 // a deprecated $variant argument and add it to the query
1234 $query2 = wfArrayToCGI( array( 'variant' => $query2 ) );
1236 $query2 = wfArrayToCGI( $query2 );
1238 // If we have $query content add a & to it first
1242 // Now append the queries together
1249 * Get a real URL referring to this title, with interwiki link and
1252 * See getLocalURL for the arguments.
1254 * @see self::getLocalURL
1255 * @return String the URL
1257 public function getFullURL( $query = '', $query2 = false ) {
1258 $query = self
::fixUrlQueryArgs( $query, $query2 );
1260 # Hand off all the decisions on urls to getLocalURL
1261 $url = $this->getLocalURL( $query );
1263 # Expand the url to make it a full url. Note that getLocalURL has the
1264 # potential to output full urls for a variety of reasons, so we use
1265 # wfExpandUrl instead of simply prepending $wgServer
1266 $url = wfExpandUrl( $url, PROTO_RELATIVE
);
1268 # Finally, add the fragment.
1269 $url .= $this->getFragmentForURL();
1271 wfRunHooks( 'GetFullURL', array( &$this, &$url, $query ) );
1276 * Get a URL with no fragment or server name. If this page is generated
1277 * with action=render, $wgServer is prepended.
1280 * @param $query \twotypes{\string,\array} an optional query string,
1281 * not used for interwiki links. Can be specified as an associative array as well,
1282 * e.g., array( 'action' => 'edit' ) (keys and values will be URL-escaped).
1283 * Some query patterns will trigger various shorturl path replacements.
1284 * @param $query2 Mixed: An optional secondary query array. This one MUST
1285 * be an array. If a string is passed it will be interpreted as a deprecated
1286 * variant argument and urlencoded into a variant= argument.
1287 * This second query argument will be added to the $query
1288 * @return String the URL
1290 public function getLocalURL( $query = '', $query2 = false ) {
1291 global $wgArticlePath, $wgScript, $wgServer, $wgRequest;
1293 $query = self
::fixUrlQueryArgs( $query, $query2 );
1295 $interwiki = Interwiki
::fetch( $this->mInterwiki
);
1297 $namespace = $this->getNsText();
1298 if ( $namespace != '' ) {
1299 # Can this actually happen? Interwikis shouldn't be parsed.
1300 # Yes! It can in interwiki transclusion. But... it probably shouldn't.
1303 $url = $interwiki->getURL( $namespace . $this->getDBkey() );
1304 $url = wfAppendQuery( $url, $query );
1306 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
1307 if ( $query == '' ) {
1308 $url = str_replace( '$1', $dbkey, $wgArticlePath );
1309 wfRunHooks( 'GetLocalURL::Article', array( &$this, &$url ) );
1311 global $wgVariantArticlePath, $wgActionPaths;
1315 if ( !empty( $wgActionPaths ) &&
1316 preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) )
1318 $action = urldecode( $matches[2] );
1319 if ( isset( $wgActionPaths[$action] ) ) {
1320 $query = $matches[1];
1321 if ( isset( $matches[4] ) ) {
1322 $query .= $matches[4];
1324 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
1325 if ( $query != '' ) {
1326 $url = wfAppendQuery( $url, $query );
1331 if ( $url === false &&
1332 $wgVariantArticlePath &&
1333 $this->getPageLanguage()->hasVariants() &&
1334 preg_match( '/^variant=([^&]*)$/', $query, $matches ) )
1336 $variant = urldecode( $matches[1] );
1337 if ( $this->getPageLanguage()->hasVariant( $variant ) ) {
1338 // Only do the variant replacement if the given variant is a valid
1339 // variant for the page's language.
1340 $url = str_replace( '$2', urlencode( $variant ), $wgVariantArticlePath );
1341 $url = str_replace( '$1', $dbkey, $url );
1345 if ( $url === false ) {
1346 if ( $query == '-' ) {
1349 $url = "{$wgScript}?title={$dbkey}&{$query}";
1353 wfRunHooks( 'GetLocalURL::Internal', array( &$this, &$url, $query ) );
1355 // @todo FIXME: This causes breakage in various places when we
1356 // actually expected a local URL and end up with dupe prefixes.
1357 if ( $wgRequest->getVal( 'action' ) == 'render' ) {
1358 $url = $wgServer . $url;
1361 wfRunHooks( 'GetLocalURL', array( &$this, &$url, $query ) );
1366 * Get a URL that's the simplest URL that will be valid to link, locally,
1367 * to the current Title. It includes the fragment, but does not include
1368 * the server unless action=render is used (or the link is external). If
1369 * there's a fragment but the prefixed text is empty, we just return a link
1372 * The result obviously should not be URL-escaped, but does need to be
1373 * HTML-escaped if it's being output in HTML.
1375 * See getLocalURL for the arguments.
1377 * @see self::getLocalURL
1378 * @return String the URL
1380 public function getLinkURL( $query = '', $query2 = false ) {
1381 wfProfileIn( __METHOD__
);
1382 if ( $this->isExternal() ) {
1383 $ret = $this->getFullURL( $query, $query2 );
1384 } elseif ( $this->getPrefixedText() === '' && $this->getFragment() !== '' ) {
1385 $ret = $this->getFragmentForURL();
1387 $ret = $this->getLocalURL( $query, $query2 ) . $this->getFragmentForURL();
1389 wfProfileOut( __METHOD__
);
1394 * Get an HTML-escaped version of the URL form, suitable for
1395 * using in a link, without a server name or fragment
1397 * See getLocalURL for the arguments.
1399 * @see self::getLocalURL
1400 * @return String the URL
1402 public function escapeLocalURL( $query = '', $query2 = false ) {
1403 wfDeprecated( __METHOD__
, '1.19' );
1404 return htmlspecialchars( $this->getLocalURL( $query, $query2 ) );
1408 * Get an HTML-escaped version of the URL form, suitable for
1409 * using in a link, including the server name and fragment
1411 * See getLocalURL for the arguments.
1413 * @see self::getLocalURL
1414 * @return String the URL
1416 public function escapeFullURL( $query = '', $query2 = false ) {
1417 wfDeprecated( __METHOD__
, '1.19' );
1418 return htmlspecialchars( $this->getFullURL( $query, $query2 ) );
1422 * Get the URL form for an internal link.
1423 * - Used in various Squid-related code, in case we have a different
1424 * internal hostname for the server from the exposed one.
1426 * This uses $wgInternalServer to qualify the path, or $wgServer
1427 * if $wgInternalServer is not set. If the server variable used is
1428 * protocol-relative, the URL will be expanded to http://
1430 * See getLocalURL for the arguments.
1432 * @see self::getLocalURL
1433 * @return String the URL
1435 public function getInternalURL( $query = '', $query2 = false ) {
1436 global $wgInternalServer, $wgServer;
1437 $query = self
::fixUrlQueryArgs( $query, $query2 );
1438 $server = $wgInternalServer !== false ?
$wgInternalServer : $wgServer;
1439 $url = wfExpandUrl( $server . $this->getLocalURL( $query ), PROTO_HTTP
);
1440 wfRunHooks( 'GetInternalURL', array( &$this, &$url, $query ) );
1445 * Get the URL for a canonical link, for use in things like IRC and
1446 * e-mail notifications. Uses $wgCanonicalServer and the
1447 * GetCanonicalURL hook.
1449 * NOTE: Unlike getInternalURL(), the canonical URL includes the fragment
1451 * See getLocalURL for the arguments.
1453 * @see self::getLocalURL
1454 * @return string The URL
1457 public function getCanonicalURL( $query = '', $query2 = false ) {
1458 $query = self
::fixUrlQueryArgs( $query, $query2 );
1459 $url = wfExpandUrl( $this->getLocalURL( $query ) . $this->getFragmentForURL(), PROTO_CANONICAL
);
1460 wfRunHooks( 'GetCanonicalURL', array( &$this, &$url, $query ) );
1465 * HTML-escaped version of getCanonicalURL()
1467 * See getLocalURL for the arguments.
1469 * @see self::getLocalURL
1472 public function escapeCanonicalURL( $query = '', $query2 = false ) {
1473 wfDeprecated( __METHOD__
, '1.19' );
1474 return htmlspecialchars( $this->getCanonicalURL( $query, $query2 ) );
1478 * Get the edit URL for this Title
1480 * @return String the URL, or a null string if this is an
1483 public function getEditURL() {
1484 if ( $this->mInterwiki
!= '' ) {
1487 $s = $this->getLocalURL( 'action=edit' );
1493 * Is $wgUser watching this page?
1497 public function userIsWatching() {
1500 if ( is_null( $this->mWatched
) ) {
1501 if ( NS_SPECIAL
== $this->mNamespace ||
!$wgUser->isLoggedIn() ) {
1502 $this->mWatched
= false;
1504 $this->mWatched
= $wgUser->isWatched( $this );
1507 return $this->mWatched
;
1511 * Can $wgUser read this page?
1513 * @deprecated in 1.19; use userCan(), quickUserCan() or getUserPermissionsErrors() instead
1515 * @todo fold these checks into userCan()
1517 public function userCanRead() {
1518 wfDeprecated( __METHOD__
, '1.19' );
1519 return $this->userCan( 'read' );
1523 * Can $user perform $action on this page?
1524 * This skips potentially expensive cascading permission checks
1525 * as well as avoids expensive error formatting
1527 * Suitable for use for nonessential UI controls in common cases, but
1528 * _not_ for functional access control.
1530 * May provide false positives, but should never provide a false negative.
1532 * @param $action String action that permission needs to be checked for
1533 * @param $user User to check (since 1.19); $wgUser will be used if not
1537 public function quickUserCan( $action, $user = null ) {
1538 return $this->userCan( $action, $user, false );
1542 * Can $user perform $action on this page?
1544 * @param $action String action that permission needs to be checked for
1545 * @param $user User to check (since 1.19); $wgUser will be used if not
1547 * @param $doExpensiveQueries Bool Set this to false to avoid doing
1548 * unnecessary queries.
1551 public function userCan( $action, $user = null, $doExpensiveQueries = true ) {
1552 if ( !$user instanceof User
) {
1556 return !count( $this->getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries, true ) );
1560 * Can $user perform $action on this page?
1562 * @todo FIXME: This *does not* check throttles (User::pingLimiter()).
1564 * @param $action String action that permission needs to be checked for
1565 * @param $user User to check
1566 * @param $doExpensiveQueries Bool Set this to false to avoid doing unnecessary
1567 * queries by skipping checks for cascading protections and user blocks.
1568 * @param $ignoreErrors Array of Strings Set this to a list of message keys
1569 * whose corresponding errors may be ignored.
1570 * @return Array of arguments to wfMsg to explain permissions problems.
1572 public function getUserPermissionsErrors( $action, $user, $doExpensiveQueries = true, $ignoreErrors = array() ) {
1573 $errors = $this->getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries );
1575 // Remove the errors being ignored.
1576 foreach ( $errors as $index => $error ) {
1577 $error_key = is_array( $error ) ?
$error[0] : $error;
1579 if ( in_array( $error_key, $ignoreErrors ) ) {
1580 unset( $errors[$index] );
1588 * Permissions checks that fail most often, and which are easiest to test.
1590 * @param $action String the action to check
1591 * @param $user User user to check
1592 * @param $errors Array list of current errors
1593 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1594 * @param $short Boolean short circuit on first error
1596 * @return Array list of errors
1598 private function checkQuickPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1599 if ( $action == 'create' ) {
1600 if ( ( $this->isTalkPage() && !$user->isAllowed( 'createtalk' ) ) ||
1601 ( !$this->isTalkPage() && !$user->isAllowed( 'createpage' ) ) ) {
1602 $errors[] = $user->isAnon() ?
array( 'nocreatetext' ) : array( 'nocreate-loggedin' );
1604 } elseif ( $action == 'move' ) {
1605 if ( !$user->isAllowed( 'move-rootuserpages' )
1606 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1607 // Show user page-specific message only if the user can move other pages
1608 $errors[] = array( 'cant-move-user-page' );
1611 // Check if user is allowed to move files if it's a file
1612 if ( $this->mNamespace
== NS_FILE
&& !$user->isAllowed( 'movefile' ) ) {
1613 $errors[] = array( 'movenotallowedfile' );
1616 if ( !$user->isAllowed( 'move' ) ) {
1617 // User can't move anything
1618 global $wgGroupPermissions;
1619 $userCanMove = false;
1620 if ( isset( $wgGroupPermissions['user']['move'] ) ) {
1621 $userCanMove = $wgGroupPermissions['user']['move'];
1623 $autoconfirmedCanMove = false;
1624 if ( isset( $wgGroupPermissions['autoconfirmed']['move'] ) ) {
1625 $autoconfirmedCanMove = $wgGroupPermissions['autoconfirmed']['move'];
1627 if ( $user->isAnon() && ( $userCanMove ||
$autoconfirmedCanMove ) ) {
1628 // custom message if logged-in users without any special rights can move
1629 $errors[] = array( 'movenologintext' );
1631 $errors[] = array( 'movenotallowed' );
1634 } elseif ( $action == 'move-target' ) {
1635 if ( !$user->isAllowed( 'move' ) ) {
1636 // User can't move anything
1637 $errors[] = array( 'movenotallowed' );
1638 } elseif ( !$user->isAllowed( 'move-rootuserpages' )
1639 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1640 // Show user page-specific message only if the user can move other pages
1641 $errors[] = array( 'cant-move-to-user-page' );
1643 } elseif ( !$user->isAllowed( $action ) ) {
1644 $errors[] = $this->missingPermissionError( $action, $short );
1651 * Add the resulting error code to the errors array
1653 * @param $errors Array list of current errors
1654 * @param $result Mixed result of errors
1656 * @return Array list of errors
1658 private function resultToError( $errors, $result ) {
1659 if ( is_array( $result ) && count( $result ) && !is_array( $result[0] ) ) {
1660 // A single array representing an error
1661 $errors[] = $result;
1662 } elseif ( is_array( $result ) && is_array( $result[0] ) ) {
1663 // A nested array representing multiple errors
1664 $errors = array_merge( $errors, $result );
1665 } elseif ( $result !== '' && is_string( $result ) ) {
1666 // A string representing a message-id
1667 $errors[] = array( $result );
1668 } elseif ( $result === false ) {
1669 // a generic "We don't want them to do that"
1670 $errors[] = array( 'badaccess-group0' );
1676 * Check various permission hooks
1678 * @param $action String the action to check
1679 * @param $user User user to check
1680 * @param $errors Array list of current errors
1681 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1682 * @param $short Boolean short circuit on first error
1684 * @return Array list of errors
1686 private function checkPermissionHooks( $action, $user, $errors, $doExpensiveQueries, $short ) {
1687 // Use getUserPermissionsErrors instead
1689 if ( !wfRunHooks( 'userCan', array( &$this, &$user, $action, &$result ) ) ) {
1690 return $result ?
array() : array( array( 'badaccess-group0' ) );
1692 // Check getUserPermissionsErrors hook
1693 if ( !wfRunHooks( 'getUserPermissionsErrors', array( &$this, &$user, $action, &$result ) ) ) {
1694 $errors = $this->resultToError( $errors, $result );
1696 // Check getUserPermissionsErrorsExpensive hook
1697 if ( $doExpensiveQueries && !( $short && count( $errors ) > 0 ) &&
1698 !wfRunHooks( 'getUserPermissionsErrorsExpensive', array( &$this, &$user, $action, &$result ) ) ) {
1699 $errors = $this->resultToError( $errors, $result );
1706 * Check permissions on special pages & namespaces
1708 * @param $action String the action to check
1709 * @param $user User user to check
1710 * @param $errors Array list of current errors
1711 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1712 * @param $short Boolean short circuit on first error
1714 * @return Array list of errors
1716 private function checkSpecialsAndNSPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1717 # Only 'createaccount' and 'execute' can be performed on
1718 # special pages, which don't actually exist in the DB.
1719 $specialOKActions = array( 'createaccount', 'execute', 'read' );
1720 if ( NS_SPECIAL
== $this->mNamespace
&& !in_array( $action, $specialOKActions ) ) {
1721 $errors[] = array( 'ns-specialprotected' );
1724 # Check $wgNamespaceProtection for restricted namespaces
1725 if ( $this->isNamespaceProtected( $user ) ) {
1726 $ns = $this->mNamespace
== NS_MAIN ?
1727 wfMsg( 'nstab-main' ) : $this->getNsText();
1728 $errors[] = $this->mNamespace
== NS_MEDIAWIKI ?
1729 array( 'protectedinterface' ) : array( 'namespaceprotected', $ns );
1736 * Check CSS/JS sub-page permissions
1738 * @param $action String the action to check
1739 * @param $user User user to check
1740 * @param $errors Array list of current errors
1741 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1742 * @param $short Boolean short circuit on first error
1744 * @return Array list of errors
1746 private function checkCSSandJSPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1747 # Protect css/js subpages of user pages
1748 # XXX: this might be better using restrictions
1749 # XXX: right 'editusercssjs' is deprecated, for backward compatibility only
1750 if ( $action != 'patrol' && !$user->isAllowed( 'editusercssjs' )
1751 && !preg_match( '/^' . preg_quote( $user->getName(), '/' ) . '\//', $this->mTextform
) ) {
1752 if ( $this->isCssSubpage() && !$user->isAllowed( 'editusercss' ) ) {
1753 $errors[] = array( 'customcssprotected' );
1754 } elseif ( $this->isJsSubpage() && !$user->isAllowed( 'edituserjs' ) ) {
1755 $errors[] = array( 'customjsprotected' );
1763 * Check against page_restrictions table requirements on this
1764 * page. The user must possess all required rights for this
1767 * @param $action String the action to check
1768 * @param $user User user to check
1769 * @param $errors Array list of current errors
1770 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1771 * @param $short Boolean short circuit on first error
1773 * @return Array list of errors
1775 private function checkPageRestrictions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1776 foreach ( $this->getRestrictions( $action ) as $right ) {
1777 // Backwards compatibility, rewrite sysop -> protect
1778 if ( $right == 'sysop' ) {
1781 if ( $right != '' && !$user->isAllowed( $right ) ) {
1782 // Users with 'editprotected' permission can edit protected pages
1783 // without cascading option turned on.
1784 if ( $action != 'edit' ||
!$user->isAllowed( 'editprotected' )
1785 ||
$this->mCascadeRestriction
)
1787 $errors[] = array( 'protectedpagetext', $right );
1796 * Check restrictions on cascading pages.
1798 * @param $action String the action to check
1799 * @param $user User to check
1800 * @param $errors Array list of current errors
1801 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1802 * @param $short Boolean short circuit on first error
1804 * @return Array list of errors
1806 private function checkCascadingSourcesRestrictions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1807 if ( $doExpensiveQueries && !$this->isCssJsSubpage() ) {
1808 # We /could/ use the protection level on the source page, but it's
1809 # fairly ugly as we have to establish a precedence hierarchy for pages
1810 # included by multiple cascade-protected pages. So just restrict
1811 # it to people with 'protect' permission, as they could remove the
1812 # protection anyway.
1813 list( $cascadingSources, $restrictions ) = $this->getCascadeProtectionSources();
1814 # Cascading protection depends on more than this page...
1815 # Several cascading protected pages may include this page...
1816 # Check each cascading level
1817 # This is only for protection restrictions, not for all actions
1818 if ( isset( $restrictions[$action] ) ) {
1819 foreach ( $restrictions[$action] as $right ) {
1820 $right = ( $right == 'sysop' ) ?
'protect' : $right;
1821 if ( $right != '' && !$user->isAllowed( $right ) ) {
1823 foreach ( $cascadingSources as $page )
1824 $pages .= '* [[:' . $page->getPrefixedText() . "]]\n";
1825 $errors[] = array( 'cascadeprotected', count( $cascadingSources ), $pages );
1835 * Check action permissions not already checked in checkQuickPermissions
1837 * @param $action String the action to check
1838 * @param $user User to check
1839 * @param $errors Array list of current errors
1840 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1841 * @param $short Boolean short circuit on first error
1843 * @return Array list of errors
1845 private function checkActionPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1846 if ( $action == 'protect' ) {
1847 if ( count( $this->getUserPermissionsErrorsInternal( 'edit', $user, $doExpensiveQueries, true ) ) ) {
1848 // If they can't edit, they shouldn't protect.
1849 $errors[] = array( 'protect-cantedit' );
1851 } elseif ( $action == 'create' ) {
1852 $title_protection = $this->getTitleProtection();
1853 if( $title_protection ) {
1854 if( $title_protection['pt_create_perm'] == 'sysop' ) {
1855 $title_protection['pt_create_perm'] = 'protect'; // B/C
1857 if( $title_protection['pt_create_perm'] == '' ||
1858 !$user->isAllowed( $title_protection['pt_create_perm'] ) )
1860 $errors[] = array( 'titleprotected', User
::whoIs( $title_protection['pt_user'] ), $title_protection['pt_reason'] );
1863 } elseif ( $action == 'move' ) {
1864 // Check for immobile pages
1865 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
1866 // Specific message for this case
1867 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
1868 } elseif ( !$this->isMovable() ) {
1869 // Less specific message for rarer cases
1870 $errors[] = array( 'immobile-source-page' );
1872 } elseif ( $action == 'move-target' ) {
1873 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
1874 $errors[] = array( 'immobile-target-namespace', $this->getNsText() );
1875 } elseif ( !$this->isMovable() ) {
1876 $errors[] = array( 'immobile-target-page' );
1883 * Check that the user isn't blocked from editting.
1885 * @param $action String the action to check
1886 * @param $user User to check
1887 * @param $errors Array list of current errors
1888 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1889 * @param $short Boolean short circuit on first error
1891 * @return Array list of errors
1893 private function checkUserBlock( $action, $user, $errors, $doExpensiveQueries, $short ) {
1894 // Account creation blocks handled at userlogin.
1895 // Unblocking handled in SpecialUnblock
1896 if( !$doExpensiveQueries ||
in_array( $action, array( 'createaccount', 'unblock' ) ) ) {
1900 global $wgContLang, $wgLang, $wgEmailConfirmToEdit;
1902 if ( $wgEmailConfirmToEdit && !$user->isEmailConfirmed() ) {
1903 $errors[] = array( 'confirmedittext' );
1906 if ( ( $action == 'edit' ||
$action == 'create' ) && !$user->isBlockedFrom( $this ) ) {
1907 // Don't block the user from editing their own talk page unless they've been
1908 // explicitly blocked from that too.
1909 } elseif( $user->isBlocked() && $user->mBlock
->prevents( $action ) !== false ) {
1910 $block = $user->mBlock
;
1912 // This is from OutputPage::blockedPage
1913 // Copied at r23888 by werdna
1915 $id = $user->blockedBy();
1916 $reason = $user->blockedFor();
1917 if ( $reason == '' ) {
1918 $reason = wfMsg( 'blockednoreason' );
1920 $ip = $user->getRequest()->getIP();
1922 if ( is_numeric( $id ) ) {
1923 $name = User
::whoIs( $id );
1928 $link = '[[' . $wgContLang->getNsText( NS_USER
) . ":{$name}|{$name}]]";
1929 $blockid = $block->getId();
1930 $blockExpiry = $user->mBlock
->mExpiry
;
1931 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW
, $user->mBlock
->mTimestamp
), true );
1932 if ( $blockExpiry == 'infinity' ) {
1933 $blockExpiry = wfMessage( 'infiniteblock' )->text();
1935 $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW
, $blockExpiry ), true );
1938 $intended = strval( $user->mBlock
->getTarget() );
1940 $errors[] = array( ( $block->mAuto ?
'autoblockedtext' : 'blockedtext' ), $link, $reason, $ip, $name,
1941 $blockid, $blockExpiry, $intended, $blockTimestamp );
1948 * Check that the user is allowed to read this page.
1950 * @param $action String the action to check
1951 * @param $user User to check
1952 * @param $errors Array list of current errors
1953 * @param $doExpensiveQueries Boolean whether or not to perform expensive queries
1954 * @param $short Boolean short circuit on first error
1956 * @return Array list of errors
1958 private function checkReadPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
1959 static $useShortcut = null;
1961 # Initialize the $useShortcut boolean, to determine if we can skip quite a bit of code below
1962 if ( is_null( $useShortcut ) ) {
1963 global $wgGroupPermissions, $wgRevokePermissions;
1964 $useShortcut = true;
1965 if ( empty( $wgGroupPermissions['*']['read'] ) ) {
1966 # Not a public wiki, so no shortcut
1967 $useShortcut = false;
1968 } elseif ( !empty( $wgRevokePermissions ) ) {
1970 * Iterate through each group with permissions being revoked (key not included since we don't care
1971 * what the group name is), then check if the read permission is being revoked. If it is, then
1972 * we don't use the shortcut below since the user might not be able to read, even though anon
1973 * reading is allowed.
1975 foreach ( $wgRevokePermissions as $perms ) {
1976 if ( !empty( $perms['read'] ) ) {
1977 # We might be removing the read right from the user, so no shortcut
1978 $useShortcut = false;
1985 # Shortcut for public wikis, allows skipping quite a bit of code
1986 if ( $useShortcut ) {
1990 # If the user is allowed to read pages, he is allowed to read all pages
1991 if ( $user->isAllowed( 'read' ) ) {
1995 # Always grant access to the login page.
1996 # Even anons need to be able to log in.
1997 if ( $this->isSpecial( 'Userlogin' )
1998 ||
$this->isSpecial( 'ChangePassword' )
1999 ||
$this->isSpecial( 'PasswordReset' )
2004 # Time to check the whitelist
2005 global $wgWhitelistRead;
2007 # Only do these checks is there's something to check against
2008 if ( is_array( $wgWhitelistRead ) && count( $wgWhitelistRead ) ) {
2009 # Check for explicit whitelisting
2010 $name = $this->getPrefixedText();
2011 $dbName = $this->getPrefixedDBKey();
2013 // Check with and without underscores
2014 if ( in_array( $name, $wgWhitelistRead, true ) ||
in_array( $dbName, $wgWhitelistRead, true ) ) {
2018 # Old settings might have the title prefixed with
2019 # a colon for main-namespace pages
2020 if ( $this->getNamespace() == NS_MAIN
) {
2021 if ( in_array( ':' . $name, $wgWhitelistRead ) ) {
2026 # If it's a special page, ditch the subpage bit and check again
2027 if ( $this->isSpecialPage() ) {
2028 $name = $this->getDBkey();
2029 list( $name, /* $subpage */ ) = SpecialPageFactory
::resolveAlias( $name );
2030 if ( $name !== false ) {
2031 $pure = SpecialPage
::getTitleFor( $name )->getPrefixedText();
2032 if ( in_array( $pure, $wgWhitelistRead, true ) ) {
2039 $errors[] = $this->missingPermissionError( $action, $short );
2044 * Get a description array when the user doesn't have the right to perform
2045 * $action (i.e. when User::isAllowed() returns false)
2047 * @param $action String the action to check
2048 * @param $short Boolean short circuit on first error
2049 * @return Array list of errors
2051 private function missingPermissionError( $action, $short ) {
2052 // We avoid expensive display logic for quickUserCan's and such
2054 return array( 'badaccess-group0' );
2057 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
2058 User
::getGroupsWithPermission( $action ) );
2060 if ( count( $groups ) ) {
2064 $wgLang->commaList( $groups ),
2068 return array( 'badaccess-group0' );
2073 * Can $user perform $action on this page? This is an internal function,
2074 * which checks ONLY that previously checked by userCan (i.e. it leaves out
2075 * checks on wfReadOnly() and blocks)
2077 * @param $action String action that permission needs to be checked for
2078 * @param $user User to check
2079 * @param $doExpensiveQueries Bool Set this to false to avoid doing unnecessary queries.
2080 * @param $short Bool Set this to true to stop after the first permission error.
2081 * @return Array of arrays of the arguments to wfMsg to explain permissions problems.
2083 protected function getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries = true, $short = false ) {
2084 wfProfileIn( __METHOD__
);
2086 # Read has special handling
2087 if ( $action == 'read' ) {
2089 'checkPermissionHooks',
2090 'checkReadPermissions',
2094 'checkQuickPermissions',
2095 'checkPermissionHooks',
2096 'checkSpecialsAndNSPermissions',
2097 'checkCSSandJSPermissions',
2098 'checkPageRestrictions',
2099 'checkCascadingSourcesRestrictions',
2100 'checkActionPermissions',
2106 while( count( $checks ) > 0 &&
2107 !( $short && count( $errors ) > 0 ) ) {
2108 $method = array_shift( $checks );
2109 $errors = $this->$method( $action, $user, $errors, $doExpensiveQueries, $short );
2112 wfProfileOut( __METHOD__
);
2117 * Protect css subpages of user pages: can $wgUser edit
2120 * @deprecated in 1.19; will be removed in 1.20. Use getUserPermissionsErrors() instead.
2123 public function userCanEditCssSubpage() {
2125 wfDeprecated( __METHOD__
, '1.19' );
2126 return ( ( $wgUser->isAllowedAll( 'editusercssjs', 'editusercss' ) )
2127 ||
preg_match( '/^' . preg_quote( $wgUser->getName(), '/' ) . '\//', $this->mTextform
) );
2131 * Protect js subpages of user pages: can $wgUser edit
2134 * @deprecated in 1.19; will be removed in 1.20. Use getUserPermissionsErrors() instead.
2137 public function userCanEditJsSubpage() {
2139 wfDeprecated( __METHOD__
, '1.19' );
2140 return ( ( $wgUser->isAllowedAll( 'editusercssjs', 'edituserjs' ) )
2141 ||
preg_match( '/^' . preg_quote( $wgUser->getName(), '/' ) . '\//', $this->mTextform
) );
2145 * Get a filtered list of all restriction types supported by this wiki.
2146 * @param bool $exists True to get all restriction types that apply to
2147 * titles that do exist, False for all restriction types that apply to
2148 * titles that do not exist
2151 public static function getFilteredRestrictionTypes( $exists = true ) {
2152 global $wgRestrictionTypes;
2153 $types = $wgRestrictionTypes;
2155 # Remove the create restriction for existing titles
2156 $types = array_diff( $types, array( 'create' ) );
2158 # Only the create and upload restrictions apply to non-existing titles
2159 $types = array_intersect( $types, array( 'create', 'upload' ) );
2165 * Returns restriction types for the current Title
2167 * @return array applicable restriction types
2169 public function getRestrictionTypes() {
2170 if ( $this->isSpecialPage() ) {
2174 $types = self
::getFilteredRestrictionTypes( $this->exists() );
2176 if ( $this->getNamespace() != NS_FILE
) {
2177 # Remove the upload restriction for non-file titles
2178 $types = array_diff( $types, array( 'upload' ) );
2181 wfRunHooks( 'TitleGetRestrictionTypes', array( $this, &$types ) );
2183 wfDebug( __METHOD__
. ': applicable restrictions to [[' .
2184 $this->getPrefixedText() . ']] are {' . implode( ',', $types ) . "}\n" );
2190 * Is this title subject to title protection?
2191 * Title protection is the one applied against creation of such title.
2193 * @return Mixed An associative array representing any existent title
2194 * protection, or false if there's none.
2196 private function getTitleProtection() {
2197 // Can't protect pages in special namespaces
2198 if ( $this->getNamespace() < 0 ) {
2202 // Can't protect pages that exist.
2203 if ( $this->exists() ) {
2207 if ( !isset( $this->mTitleProtection
) ) {
2208 $dbr = wfGetDB( DB_SLAVE
);
2209 $res = $dbr->select( 'protected_titles', '*',
2210 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2213 // fetchRow returns false if there are no rows.
2214 $this->mTitleProtection
= $dbr->fetchRow( $res );
2216 return $this->mTitleProtection
;
2220 * Update the title protection status
2222 * @deprecated in 1.19; will be removed in 1.20. Use WikiPage::doUpdateRestrictions() instead.
2223 * @param $create_perm String Permission required for creation
2224 * @param $reason String Reason for protection
2225 * @param $expiry String Expiry timestamp
2226 * @return boolean true
2228 public function updateTitleProtection( $create_perm, $reason, $expiry ) {
2229 wfDeprecated( __METHOD__
, '1.19' );
2233 $limit = array( 'create' => $create_perm );
2234 $expiry = array( 'create' => $expiry );
2236 $page = WikiPage
::factory( $this );
2237 $status = $page->doUpdateRestrictions( $limit, $expiry, false, $reason, $wgUser );
2239 return $status->isOK();
2243 * Remove any title protection due to page existing
2245 public function deleteTitleProtection() {
2246 $dbw = wfGetDB( DB_MASTER
);
2250 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2253 $this->mTitleProtection
= false;
2257 * Is this page "semi-protected" - the *only* protection is autoconfirm?
2259 * @param $action String Action to check (default: edit)
2262 public function isSemiProtected( $action = 'edit' ) {
2263 if ( $this->exists() ) {
2264 $restrictions = $this->getRestrictions( $action );
2265 if ( count( $restrictions ) > 0 ) {
2266 foreach ( $restrictions as $restriction ) {
2267 if ( strtolower( $restriction ) != 'autoconfirmed' ) {
2277 # If it doesn't exist, it can't be protected
2283 * Does the title correspond to a protected article?
2285 * @param $action String the action the page is protected from,
2286 * by default checks all actions.
2289 public function isProtected( $action = '' ) {
2290 global $wgRestrictionLevels;
2292 $restrictionTypes = $this->getRestrictionTypes();
2294 # Special pages have inherent protection
2295 if( $this->isSpecialPage() ) {
2299 # Check regular protection levels
2300 foreach ( $restrictionTypes as $type ) {
2301 if ( $action == $type ||
$action == '' ) {
2302 $r = $this->getRestrictions( $type );
2303 foreach ( $wgRestrictionLevels as $level ) {
2304 if ( in_array( $level, $r ) && $level != '' ) {
2315 * Determines if $user is unable to edit this page because it has been protected
2316 * by $wgNamespaceProtection.
2318 * @param $user User object to check permissions
2321 public function isNamespaceProtected( User
$user ) {
2322 global $wgNamespaceProtection;
2324 if ( isset( $wgNamespaceProtection[$this->mNamespace
] ) ) {
2325 foreach ( (array)$wgNamespaceProtection[$this->mNamespace
] as $right ) {
2326 if ( $right != '' && !$user->isAllowed( $right ) ) {
2335 * Cascading protection: Return true if cascading restrictions apply to this page, false if not.
2337 * @return Bool If the page is subject to cascading restrictions.
2339 public function isCascadeProtected() {
2340 list( $sources, /* $restrictions */ ) = $this->getCascadeProtectionSources( false );
2341 return ( $sources > 0 );
2345 * Cascading protection: Get the source of any cascading restrictions on this page.
2347 * @param $getPages Bool Whether or not to retrieve the actual pages
2348 * that the restrictions have come from.
2349 * @return Mixed Array of Title objects of the pages from which cascading restrictions
2350 * have come, false for none, or true if such restrictions exist, but $getPages
2351 * was not set. The restriction array is an array of each type, each of which
2352 * contains a array of unique groups.
2354 public function getCascadeProtectionSources( $getPages = true ) {
2356 $pagerestrictions = array();
2358 if ( isset( $this->mCascadeSources
) && $getPages ) {
2359 return array( $this->mCascadeSources
, $this->mCascadingRestrictions
);
2360 } elseif ( isset( $this->mHasCascadingRestrictions
) && !$getPages ) {
2361 return array( $this->mHasCascadingRestrictions
, $pagerestrictions );
2364 wfProfileIn( __METHOD__
);
2366 $dbr = wfGetDB( DB_SLAVE
);
2368 if ( $this->getNamespace() == NS_FILE
) {
2369 $tables = array( 'imagelinks', 'page_restrictions' );
2370 $where_clauses = array(
2371 'il_to' => $this->getDBkey(),
2376 $tables = array( 'templatelinks', 'page_restrictions' );
2377 $where_clauses = array(
2378 'tl_namespace' => $this->getNamespace(),
2379 'tl_title' => $this->getDBkey(),
2386 $cols = array( 'pr_page', 'page_namespace', 'page_title',
2387 'pr_expiry', 'pr_type', 'pr_level' );
2388 $where_clauses[] = 'page_id=pr_page';
2391 $cols = array( 'pr_expiry' );
2394 $res = $dbr->select( $tables, $cols, $where_clauses, __METHOD__
);
2396 $sources = $getPages ?
array() : false;
2397 $now = wfTimestampNow();
2398 $purgeExpired = false;
2400 foreach ( $res as $row ) {
2401 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2402 if ( $expiry > $now ) {
2404 $page_id = $row->pr_page
;
2405 $page_ns = $row->page_namespace
;
2406 $page_title = $row->page_title
;
2407 $sources[$page_id] = Title
::makeTitle( $page_ns, $page_title );
2408 # Add groups needed for each restriction type if its not already there
2409 # Make sure this restriction type still exists
2411 if ( !isset( $pagerestrictions[$row->pr_type
] ) ) {
2412 $pagerestrictions[$row->pr_type
] = array();
2415 if ( isset( $pagerestrictions[$row->pr_type
] ) &&
2416 !in_array( $row->pr_level
, $pagerestrictions[$row->pr_type
] ) ) {
2417 $pagerestrictions[$row->pr_type
][] = $row->pr_level
;
2423 // Trigger lazy purge of expired restrictions from the db
2424 $purgeExpired = true;
2427 if ( $purgeExpired ) {
2428 Title
::purgeExpiredRestrictions();
2432 $this->mCascadeSources
= $sources;
2433 $this->mCascadingRestrictions
= $pagerestrictions;
2435 $this->mHasCascadingRestrictions
= $sources;
2438 wfProfileOut( __METHOD__
);
2439 return array( $sources, $pagerestrictions );
2443 * Accessor/initialisation for mRestrictions
2445 * @param $action String action that permission needs to be checked for
2446 * @return Array of Strings the array of groups allowed to edit this article
2448 public function getRestrictions( $action ) {
2449 if ( !$this->mRestrictionsLoaded
) {
2450 $this->loadRestrictions();
2452 return isset( $this->mRestrictions
[$action] )
2453 ?
$this->mRestrictions
[$action]
2458 * Get the expiry time for the restriction against a given action
2460 * @return String|Bool 14-char timestamp, or 'infinity' if the page is protected forever
2461 * or not protected at all, or false if the action is not recognised.
2463 public function getRestrictionExpiry( $action ) {
2464 if ( !$this->mRestrictionsLoaded
) {
2465 $this->loadRestrictions();
2467 return isset( $this->mRestrictionsExpiry
[$action] ) ?
$this->mRestrictionsExpiry
[$action] : false;
2471 * Returns cascading restrictions for the current article
2475 function areRestrictionsCascading() {
2476 if ( !$this->mRestrictionsLoaded
) {
2477 $this->loadRestrictions();
2480 return $this->mCascadeRestriction
;
2484 * Loads a string into mRestrictions array
2486 * @param $res Resource restrictions as an SQL result.
2487 * @param $oldFashionedRestrictions String comma-separated list of page
2488 * restrictions from page table (pre 1.10)
2490 private function loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions = null ) {
2493 foreach ( $res as $row ) {
2497 $this->loadRestrictionsFromRows( $rows, $oldFashionedRestrictions );
2501 * Compiles list of active page restrictions from both page table (pre 1.10)
2502 * and page_restrictions table for this existing page.
2503 * Public for usage by LiquidThreads.
2505 * @param $rows array of db result objects
2506 * @param $oldFashionedRestrictions string comma-separated list of page
2507 * restrictions from page table (pre 1.10)
2509 public function loadRestrictionsFromRows( $rows, $oldFashionedRestrictions = null ) {
2511 $dbr = wfGetDB( DB_SLAVE
);
2513 $restrictionTypes = $this->getRestrictionTypes();
2515 foreach ( $restrictionTypes as $type ) {
2516 $this->mRestrictions
[$type] = array();
2517 $this->mRestrictionsExpiry
[$type] = $wgContLang->formatExpiry( '', TS_MW
);
2520 $this->mCascadeRestriction
= false;
2522 # Backwards-compatibility: also load the restrictions from the page record (old format).
2524 if ( $oldFashionedRestrictions === null ) {
2525 $oldFashionedRestrictions = $dbr->selectField( 'page', 'page_restrictions',
2526 array( 'page_id' => $this->getArticleId() ), __METHOD__
);
2529 if ( $oldFashionedRestrictions != '' ) {
2531 foreach ( explode( ':', trim( $oldFashionedRestrictions ) ) as $restrict ) {
2532 $temp = explode( '=', trim( $restrict ) );
2533 if ( count( $temp ) == 1 ) {
2534 // old old format should be treated as edit/move restriction
2535 $this->mRestrictions
['edit'] = explode( ',', trim( $temp[0] ) );
2536 $this->mRestrictions
['move'] = explode( ',', trim( $temp[0] ) );
2538 $this->mRestrictions
[$temp[0]] = explode( ',', trim( $temp[1] ) );
2542 $this->mOldRestrictions
= true;
2546 if ( count( $rows ) ) {
2547 # Current system - load second to make them override.
2548 $now = wfTimestampNow();
2549 $purgeExpired = false;
2551 # Cycle through all the restrictions.
2552 foreach ( $rows as $row ) {
2554 // Don't take care of restrictions types that aren't allowed
2555 if ( !in_array( $row->pr_type
, $restrictionTypes ) )
2558 // This code should be refactored, now that it's being used more generally,
2559 // But I don't really see any harm in leaving it in Block for now -werdna
2560 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2562 // Only apply the restrictions if they haven't expired!
2563 if ( !$expiry ||
$expiry > $now ) {
2564 $this->mRestrictionsExpiry
[$row->pr_type
] = $expiry;
2565 $this->mRestrictions
[$row->pr_type
] = explode( ',', trim( $row->pr_level
) );
2567 $this->mCascadeRestriction |
= $row->pr_cascade
;
2569 // Trigger a lazy purge of expired restrictions
2570 $purgeExpired = true;
2574 if ( $purgeExpired ) {
2575 Title
::purgeExpiredRestrictions();
2579 $this->mRestrictionsLoaded
= true;
2583 * Load restrictions from the page_restrictions table
2585 * @param $oldFashionedRestrictions String comma-separated list of page
2586 * restrictions from page table (pre 1.10)
2588 public function loadRestrictions( $oldFashionedRestrictions = null ) {
2590 if ( !$this->mRestrictionsLoaded
) {
2591 if ( $this->exists() ) {
2592 $dbr = wfGetDB( DB_SLAVE
);
2594 $res = $dbr->select(
2595 'page_restrictions',
2597 array( 'pr_page' => $this->getArticleId() ),
2601 $this->loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions );
2603 $title_protection = $this->getTitleProtection();
2605 if ( $title_protection ) {
2606 $now = wfTimestampNow();
2607 $expiry = $wgContLang->formatExpiry( $title_protection['pt_expiry'], TS_MW
);
2609 if ( !$expiry ||
$expiry > $now ) {
2610 // Apply the restrictions
2611 $this->mRestrictionsExpiry
['create'] = $expiry;
2612 $this->mRestrictions
['create'] = explode( ',', trim( $title_protection['pt_create_perm'] ) );
2613 } else { // Get rid of the old restrictions
2614 Title
::purgeExpiredRestrictions();
2615 $this->mTitleProtection
= false;
2618 $this->mRestrictionsExpiry
['create'] = $wgContLang->formatExpiry( '', TS_MW
);
2620 $this->mRestrictionsLoaded
= true;
2626 * Flush the protection cache in this object and force reload from the database.
2627 * This is used when updating protection from WikiPage::doUpdateRestrictions().
2629 public function flushRestrictions() {
2630 $this->mRestrictionsLoaded
= false;
2631 $this->mTitleProtection
= null;
2635 * Purge expired restrictions from the page_restrictions table
2637 static function purgeExpiredRestrictions() {
2638 $dbw = wfGetDB( DB_MASTER
);
2640 'page_restrictions',
2641 array( 'pr_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
2647 array( 'pt_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
2653 * Does this have subpages? (Warning, usually requires an extra DB query.)
2657 public function hasSubpages() {
2658 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
2663 # We dynamically add a member variable for the purpose of this method
2664 # alone to cache the result. There's no point in having it hanging
2665 # around uninitialized in every Title object; therefore we only add it
2666 # if needed and don't declare it statically.
2667 if ( isset( $this->mHasSubpages
) ) {
2668 return $this->mHasSubpages
;
2671 $subpages = $this->getSubpages( 1 );
2672 if ( $subpages instanceof TitleArray
) {
2673 return $this->mHasSubpages
= (bool)$subpages->count();
2675 return $this->mHasSubpages
= false;
2679 * Get all subpages of this page.
2681 * @param $limit Int maximum number of subpages to fetch; -1 for no limit
2682 * @return mixed TitleArray, or empty array if this page's namespace
2683 * doesn't allow subpages
2685 public function getSubpages( $limit = -1 ) {
2686 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
2690 $dbr = wfGetDB( DB_SLAVE
);
2691 $conds['page_namespace'] = $this->getNamespace();
2692 $conds[] = 'page_title ' . $dbr->buildLike( $this->getDBkey() . '/', $dbr->anyString() );
2694 if ( $limit > -1 ) {
2695 $options['LIMIT'] = $limit;
2697 return $this->mSubpages
= TitleArray
::newFromResult(
2698 $dbr->select( 'page',
2699 array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' ),
2708 * Is there a version of this page in the deletion archive?
2710 * @return Int the number of archived revisions
2712 public function isDeleted() {
2713 if ( $this->getNamespace() < 0 ) {
2716 $dbr = wfGetDB( DB_SLAVE
);
2718 $n = $dbr->selectField( 'archive', 'COUNT(*)',
2719 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
2722 if ( $this->getNamespace() == NS_FILE
) {
2723 $n +
= $dbr->selectField( 'filearchive', 'COUNT(*)',
2724 array( 'fa_name' => $this->getDBkey() ),
2733 * Is there a version of this page in the deletion archive?
2737 public function isDeletedQuick() {
2738 if ( $this->getNamespace() < 0 ) {
2741 $dbr = wfGetDB( DB_SLAVE
);
2742 $deleted = (bool)$dbr->selectField( 'archive', '1',
2743 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
2746 if ( !$deleted && $this->getNamespace() == NS_FILE
) {
2747 $deleted = (bool)$dbr->selectField( 'filearchive', '1',
2748 array( 'fa_name' => $this->getDBkey() ),
2756 * Get the number of views of this page
2758 * @return int The view count for the page
2760 public function getCount() {
2761 if ( $this->mCounter
== -1 ) {
2762 if ( $this->exists() ) {
2763 $dbr = wfGetDB( DB_SLAVE
);
2764 $this->mCounter
= $dbr->selectField( 'page',
2766 array( 'page_id' => $this->getArticleID() ),
2770 $this->mCounter
= 0;
2774 return $this->mCounter
;
2778 * Returns a bool to say whether the Article ID for this title has already been loaded
2782 public function isArticleIDLoaded() {
2783 return $this->mArticleID
!= -1;
2787 * Get the article ID for this Title from the link cache,
2788 * adding it if necessary
2790 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select
2792 * @return Int the ID
2794 public function getArticleID( $flags = 0 ) {
2795 if ( $this->getNamespace() < 0 ) {
2796 return $this->mArticleID
= 0;
2798 $linkCache = LinkCache
::singleton();
2799 if ( $flags & self
::GAID_FOR_UPDATE
) {
2800 $oldUpdate = $linkCache->forUpdate( true );
2801 $linkCache->clearLink( $this );
2802 $this->mArticleID
= $linkCache->addLinkObj( $this );
2803 $linkCache->forUpdate( $oldUpdate );
2804 } else if ( -1 == $this->mArticleID
) {
2805 $this->mArticleID
= $linkCache->addLinkObj( $this );
2807 return $this->mArticleID
;
2811 * Is this an article that is a redirect page?
2812 * Uses link cache, adding it if necessary
2814 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2817 public function isRedirect( $flags = 0 ) {
2818 if ( !is_null( $this->mRedirect
) ) {
2819 return $this->mRedirect
;
2821 # Calling getArticleID() loads the field from cache as needed
2822 if ( !$this->getArticleID( $flags ) ) {
2823 return $this->mRedirect
= false;
2825 $linkCache = LinkCache
::singleton();
2826 $this->mRedirect
= (bool)$linkCache->getGoodLinkFieldObj( $this, 'redirect' );
2828 return $this->mRedirect
;
2832 * What is the length of this page?
2833 * Uses link cache, adding it if necessary
2835 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2838 public function getLength( $flags = 0 ) {
2839 if ( $this->mLength
!= -1 ) {
2840 return $this->mLength
;
2842 # Calling getArticleID() loads the field from cache as needed
2843 if ( !$this->getArticleID( $flags ) ) {
2844 return $this->mLength
= 0;
2846 $linkCache = LinkCache
::singleton();
2847 $this->mLength
= intval( $linkCache->getGoodLinkFieldObj( $this, 'length' ) );
2849 return $this->mLength
;
2853 * What is the page_latest field for this page?
2855 * @param $flags Int a bit field; may be Title::GAID_FOR_UPDATE to select for update
2856 * @return Int or 0 if the page doesn't exist
2858 public function getLatestRevID( $flags = 0 ) {
2859 if ( $this->mLatestID
!== false ) {
2860 return intval( $this->mLatestID
);
2862 # Calling getArticleID() loads the field from cache as needed
2863 if ( !$this->getArticleID( $flags ) ) {
2864 return $this->mLatestID
= 0;
2866 $linkCache = LinkCache
::singleton();
2867 $this->mLatestID
= intval( $linkCache->getGoodLinkFieldObj( $this, 'revision' ) );
2869 return $this->mLatestID
;
2873 * This clears some fields in this object, and clears any associated
2874 * keys in the "bad links" section of the link cache.
2876 * - This is called from Article::doEdit() and Article::insertOn() to allow
2877 * loading of the new page_id. It's also called from
2878 * Article::doDeleteArticle()
2880 * @param $newid Int the new Article ID
2882 public function resetArticleID( $newid ) {
2883 $linkCache = LinkCache
::singleton();
2884 $linkCache->clearLink( $this );
2886 if ( $newid === false ) {
2887 $this->mArticleID
= -1;
2889 $this->mArticleID
= intval( $newid );
2891 $this->mRestrictionsLoaded
= false;
2892 $this->mRestrictions
= array();
2893 $this->mRedirect
= null;
2894 $this->mLength
= -1;
2895 $this->mLatestID
= false;
2896 $this->mCounter
= -1;
2900 * Capitalize a text string for a title if it belongs to a namespace that capitalizes
2902 * @param $text String containing title to capitalize
2903 * @param $ns int namespace index, defaults to NS_MAIN
2904 * @return String containing capitalized title
2906 public static function capitalize( $text, $ns = NS_MAIN
) {
2909 if ( MWNamespace
::isCapitalized( $ns ) ) {
2910 return $wgContLang->ucfirst( $text );
2917 * Secure and split - main initialisation function for this object
2919 * Assumes that mDbkeyform has been set, and is urldecoded
2920 * and uses underscores, but not otherwise munged. This function
2921 * removes illegal characters, splits off the interwiki and
2922 * namespace prefixes, sets the other forms, and canonicalizes
2925 * @return Bool true on success
2927 private function secureAndSplit() {
2928 global $wgContLang, $wgLocalInterwiki;
2931 $this->mInterwiki
= $this->mFragment
= '';
2932 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
2934 $dbkey = $this->mDbkeyform
;
2936 # Strip Unicode bidi override characters.
2937 # Sometimes they slip into cut-n-pasted page titles, where the
2938 # override chars get included in list displays.
2939 $dbkey = preg_replace( '/\xE2\x80[\x8E\x8F\xAA-\xAE]/S', '', $dbkey );
2941 # Clean up whitespace
2942 # Note: use of the /u option on preg_replace here will cause
2943 # input with invalid UTF-8 sequences to be nullified out in PHP 5.2.x,
2944 # conveniently disabling them.
2945 $dbkey = preg_replace( '/[ _\xA0\x{1680}\x{180E}\x{2000}-\x{200A}\x{2028}\x{2029}\x{202F}\x{205F}\x{3000}]+/u', '_', $dbkey );
2946 $dbkey = trim( $dbkey, '_' );
2948 if ( $dbkey == '' ) {
2952 if ( false !== strpos( $dbkey, UTF8_REPLACEMENT
) ) {
2953 # Contained illegal UTF-8 sequences or forbidden Unicode chars.
2957 $this->mDbkeyform
= $dbkey;
2959 # Initial colon indicates main namespace rather than specified default
2960 # but should not create invalid {ns,title} pairs such as {0,Project:Foo}
2961 if ( ':' == $dbkey[0] ) {
2962 $this->mNamespace
= NS_MAIN
;
2963 $dbkey = substr( $dbkey, 1 ); # remove the colon but continue processing
2964 $dbkey = trim( $dbkey, '_' ); # remove any subsequent whitespace
2967 # Namespace or interwiki prefix
2969 $prefixRegexp = "/^(.+?)_*:_*(.*)$/S";
2972 if ( preg_match( $prefixRegexp, $dbkey, $m ) ) {
2974 if ( ( $ns = $wgContLang->getNsIndex( $p ) ) !== false ) {
2975 # Ordinary namespace
2977 $this->mNamespace
= $ns;
2978 # For Talk:X pages, check if X has a "namespace" prefix
2979 if ( $ns == NS_TALK
&& preg_match( $prefixRegexp, $dbkey, $x ) ) {
2980 if ( $wgContLang->getNsIndex( $x[1] ) ) {
2981 # Disallow Talk:File:x type titles...
2983 } elseif ( Interwiki
::isValidInterwiki( $x[1] ) ) {
2984 # Disallow Talk:Interwiki:x type titles...
2988 } elseif ( Interwiki
::isValidInterwiki( $p ) ) {
2989 if ( !$firstPass ) {
2990 # Can't make a local interwiki link to an interwiki link.
2991 # That's just crazy!
2997 $this->mInterwiki
= $wgContLang->lc( $p );
2999 # Redundant interwiki prefix to the local wiki
3000 if ( $wgLocalInterwiki !== false
3001 && 0 == strcasecmp( $this->mInterwiki
, $wgLocalInterwiki ) )
3003 if ( $dbkey == '' ) {
3004 # Can't have an empty self-link
3007 $this->mInterwiki
= '';
3009 # Do another namespace split...
3013 # If there's an initial colon after the interwiki, that also
3014 # resets the default namespace
3015 if ( $dbkey !== '' && $dbkey[0] == ':' ) {
3016 $this->mNamespace
= NS_MAIN
;
3017 $dbkey = substr( $dbkey, 1 );
3020 # If there's no recognized interwiki or namespace,
3021 # then let the colon expression be part of the title.
3026 # We already know that some pages won't be in the database!
3027 if ( $this->mInterwiki
!= '' || NS_SPECIAL
== $this->mNamespace
) {
3028 $this->mArticleID
= 0;
3030 $fragment = strstr( $dbkey, '#' );
3031 if ( false !== $fragment ) {
3032 $this->setFragment( $fragment );
3033 $dbkey = substr( $dbkey, 0, strlen( $dbkey ) - strlen( $fragment ) );
3034 # remove whitespace again: prevents "Foo_bar_#"
3035 # becoming "Foo_bar_"
3036 $dbkey = preg_replace( '/_*$/', '', $dbkey );
3039 # Reject illegal characters.
3040 $rxTc = self
::getTitleInvalidRegex();
3041 if ( preg_match( $rxTc, $dbkey ) ) {
3045 # Pages with "/./" or "/../" appearing in the URLs will often be un-
3046 # reachable due to the way web browsers deal with 'relative' URLs.
3047 # Also, they conflict with subpage syntax. Forbid them explicitly.
3048 if ( strpos( $dbkey, '.' ) !== false &&
3049 ( $dbkey === '.' ||
$dbkey === '..' ||
3050 strpos( $dbkey, './' ) === 0 ||
3051 strpos( $dbkey, '../' ) === 0 ||
3052 strpos( $dbkey, '/./' ) !== false ||
3053 strpos( $dbkey, '/../' ) !== false ||
3054 substr( $dbkey, -2 ) == '/.' ||
3055 substr( $dbkey, -3 ) == '/..' ) )
3060 # Magic tilde sequences? Nu-uh!
3061 if ( strpos( $dbkey, '~~~' ) !== false ) {
3065 # Limit the size of titles to 255 bytes. This is typically the size of the
3066 # underlying database field. We make an exception for special pages, which
3067 # don't need to be stored in the database, and may edge over 255 bytes due
3068 # to subpage syntax for long titles, e.g. [[Special:Block/Long name]]
3069 if ( ( $this->mNamespace
!= NS_SPECIAL
&& strlen( $dbkey ) > 255 ) ||
3070 strlen( $dbkey ) > 512 )
3075 # Normally, all wiki links are forced to have an initial capital letter so [[foo]]
3076 # and [[Foo]] point to the same place. Don't force it for interwikis, since the
3077 # other site might be case-sensitive.
3078 $this->mUserCaseDBKey
= $dbkey;
3079 if ( $this->mInterwiki
== '' ) {
3080 $dbkey = self
::capitalize( $dbkey, $this->mNamespace
);
3083 # Can't make a link to a namespace alone... "empty" local links can only be
3084 # self-links with a fragment identifier.
3085 if ( $dbkey == '' && $this->mInterwiki
== '' && $this->mNamespace
!= NS_MAIN
) {
3089 // Allow IPv6 usernames to start with '::' by canonicalizing IPv6 titles.
3090 // IP names are not allowed for accounts, and can only be referring to
3091 // edits from the IP. Given '::' abbreviations and caps/lowercaps,
3092 // there are numerous ways to present the same IP. Having sp:contribs scan
3093 // them all is silly and having some show the edits and others not is
3094 // inconsistent. Same for talk/userpages. Keep them normalized instead.
3095 $dbkey = ( $this->mNamespace
== NS_USER ||
$this->mNamespace
== NS_USER_TALK
)
3096 ? IP
::sanitizeIP( $dbkey )
3099 // Any remaining initial :s are illegal.
3100 if ( $dbkey !== '' && ':' == $dbkey[0] ) {
3105 $this->mDbkeyform
= $dbkey;
3106 $this->mUrlform
= wfUrlencode( $dbkey );
3108 $this->mTextform
= str_replace( '_', ' ', $dbkey );
3114 * Get an array of Title objects linking to this Title
3115 * Also stores the IDs in the link cache.
3117 * WARNING: do not use this function on arbitrary user-supplied titles!
3118 * On heavily-used templates it will max out the memory.
3120 * @param $options Array: may be FOR UPDATE
3121 * @param $table String: table name
3122 * @param $prefix String: fields prefix
3123 * @return Array of Title objects linking here
3125 public function getLinksTo( $options = array(), $table = 'pagelinks', $prefix = 'pl' ) {
3126 $linkCache = LinkCache
::singleton();
3128 if ( count( $options ) > 0 ) {
3129 $db = wfGetDB( DB_MASTER
);
3131 $db = wfGetDB( DB_SLAVE
);
3135 array( 'page', $table ),
3136 array( 'page_namespace', 'page_title', 'page_id', 'page_len', 'page_is_redirect', 'page_latest' ),
3138 "{$prefix}_from=page_id",
3139 "{$prefix}_namespace" => $this->getNamespace(),
3140 "{$prefix}_title" => $this->getDBkey() ),
3146 if ( $db->numRows( $res ) ) {
3147 foreach ( $res as $row ) {
3148 $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
3150 $linkCache->addGoodLinkObjFromRow( $titleObj, $row );
3151 $retVal[] = $titleObj;
3159 * Get an array of Title objects using this Title as a template
3160 * Also stores the IDs in the link cache.
3162 * WARNING: do not use this function on arbitrary user-supplied titles!
3163 * On heavily-used templates it will max out the memory.
3165 * @param $options Array: may be FOR UPDATE
3166 * @return Array of Title the Title objects linking here
3168 public function getTemplateLinksTo( $options = array() ) {
3169 return $this->getLinksTo( $options, 'templatelinks', 'tl' );
3173 * Get an array of Title objects referring to non-existent articles linked from this page
3175 * @todo check if needed (used only in SpecialBrokenRedirects.php, and should use redirect table in this case)
3176 * @return Array of Title the Title objects
3178 public function getBrokenLinksFrom() {
3179 if ( $this->getArticleId() == 0 ) {
3180 # All links from article ID 0 are false positives
3184 $dbr = wfGetDB( DB_SLAVE
);
3185 $res = $dbr->select(
3186 array( 'page', 'pagelinks' ),
3187 array( 'pl_namespace', 'pl_title' ),
3189 'pl_from' => $this->getArticleId(),
3190 'page_namespace IS NULL'
3192 __METHOD__
, array(),
3196 array( 'pl_namespace=page_namespace', 'pl_title=page_title' )
3202 foreach ( $res as $row ) {
3203 $retVal[] = Title
::makeTitle( $row->pl_namespace
, $row->pl_title
);
3210 * Get a list of URLs to purge from the Squid cache when this
3213 * @return Array of String the URLs
3215 public function getSquidURLs() {
3219 $this->getInternalURL(),
3220 $this->getInternalURL( 'action=history' )
3223 // purge variant urls as well
3224 if ( $wgContLang->hasVariants() ) {
3225 $variants = $wgContLang->getVariants();
3226 foreach ( $variants as $vCode ) {
3227 $urls[] = $this->getInternalURL( '', $vCode );
3235 * Purge all applicable Squid URLs
3237 public function purgeSquid() {
3239 if ( $wgUseSquid ) {
3240 $urls = $this->getSquidURLs();
3241 $u = new SquidUpdate( $urls );
3247 * Move this page without authentication
3249 * @param $nt Title the new page Title
3250 * @return Mixed true on success, getUserPermissionsErrors()-like array on failure
3252 public function moveNoAuth( &$nt ) {
3253 return $this->moveTo( $nt, false );
3257 * Check whether a given move operation would be valid.
3258 * Returns true if ok, or a getUserPermissionsErrors()-like array otherwise
3260 * @param $nt Title the new title
3261 * @param $auth Bool indicates whether $wgUser's permissions
3263 * @param $reason String is the log summary of the move, used for spam checking
3264 * @return Mixed True on success, getUserPermissionsErrors()-like array on failure
3266 public function isValidMoveOperation( &$nt, $auth = true, $reason = '' ) {
3271 // Normally we'd add this to $errors, but we'll get
3272 // lots of syntax errors if $nt is not an object
3273 return array( array( 'badtitletext' ) );
3275 if ( $this->equals( $nt ) ) {
3276 $errors[] = array( 'selfmove' );
3278 if ( !$this->isMovable() ) {
3279 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
3281 if ( $nt->getInterwiki() != '' ) {
3282 $errors[] = array( 'immobile-target-namespace-iw' );
3284 if ( !$nt->isMovable() ) {
3285 $errors[] = array( 'immobile-target-namespace', $nt->getNsText() );
3288 $oldid = $this->getArticleID();
3289 $newid = $nt->getArticleID();
3291 if ( strlen( $nt->getDBkey() ) < 1 ) {
3292 $errors[] = array( 'articleexists' );
3294 if ( ( $this->getDBkey() == '' ) ||
3296 ( $nt->getDBkey() == '' ) ) {
3297 $errors[] = array( 'badarticleerror' );
3300 // Image-specific checks
3301 if ( $this->getNamespace() == NS_FILE
) {
3302 $errors = array_merge( $errors, $this->validateFileMoveOperation( $nt ) );
3305 if ( $nt->getNamespace() == NS_FILE
&& $this->getNamespace() != NS_FILE
) {
3306 $errors[] = array( 'nonfile-cannot-move-to-file' );
3310 $errors = wfMergeErrorArrays( $errors,
3311 $this->getUserPermissionsErrors( 'move', $wgUser ),
3312 $this->getUserPermissionsErrors( 'edit', $wgUser ),
3313 $nt->getUserPermissionsErrors( 'move-target', $wgUser ),
3314 $nt->getUserPermissionsErrors( 'edit', $wgUser ) );
3317 $match = EditPage
::matchSummarySpamRegex( $reason );
3318 if ( $match !== false ) {
3319 // This is kind of lame, won't display nice
3320 $errors[] = array( 'spamprotectiontext' );
3324 if ( !wfRunHooks( 'AbortMove', array( $this, $nt, $wgUser, &$err, $reason ) ) ) {
3325 $errors[] = array( 'hookaborted', $err );
3328 # The move is allowed only if (1) the target doesn't exist, or
3329 # (2) the target is a redirect to the source, and has no history
3330 # (so we can undo bad moves right after they're done).
3332 if ( 0 != $newid ) { # Target exists; check for validity
3333 if ( !$this->isValidMoveTarget( $nt ) ) {
3334 $errors[] = array( 'articleexists' );
3337 $tp = $nt->getTitleProtection();
3338 $right = ( $tp['pt_create_perm'] == 'sysop' ) ?
'protect' : $tp['pt_create_perm'];
3339 if ( $tp and !$wgUser->isAllowed( $right ) ) {
3340 $errors[] = array( 'cantmove-titleprotected' );
3343 if ( empty( $errors ) ) {
3350 * Check if the requested move target is a valid file move target
3351 * @param Title $nt Target title
3352 * @return array List of errors
3354 protected function validateFileMoveOperation( $nt ) {
3359 // wfFindFile( $nt ) / wfLocalFile( $nt ) is not allowed until below
3361 $file = wfLocalFile( $this );
3362 if ( $file->exists() ) {
3363 if ( $nt->getText() != wfStripIllegalFilenameChars( $nt->getText() ) ) {
3364 $errors[] = array( 'imageinvalidfilename' );
3366 if ( !File
::checkExtensionCompatibility( $file, $nt->getDBkey() ) ) {
3367 $errors[] = array( 'imagetypemismatch' );
3371 if ( $nt->getNamespace() != NS_FILE
) {
3372 $errors[] = array( 'imagenocrossnamespace' );
3373 // From here we want to do checks on a file object, so if we can't
3374 // create one, we must return.
3378 // wfFindFile( $nt ) / wfLocalFile( $nt ) is allowed below here
3380 $destFile = wfLocalFile( $nt );
3381 if ( !$wgUser->isAllowed( 'reupload-shared' ) && !$destFile->exists() && wfFindFile( $nt ) ) {
3382 $errors[] = array( 'file-exists-sharedrepo' );
3389 * Move a title to a new location
3391 * @param $nt Title the new title
3392 * @param $auth Bool indicates whether $wgUser's permissions
3394 * @param $reason String the reason for the move
3395 * @param $createRedirect Bool Whether to create a redirect from the old title to the new title.
3396 * Ignored if the user doesn't have the suppressredirect right.
3397 * @return Mixed true on success, getUserPermissionsErrors()-like array on failure
3399 public function moveTo( &$nt, $auth = true, $reason = '', $createRedirect = true ) {
3401 $err = $this->isValidMoveOperation( $nt, $auth, $reason );
3402 if ( is_array( $err ) ) {
3403 // Auto-block user's IP if the account was "hard" blocked
3404 $wgUser->spreadAnyEditBlock();
3408 // If it is a file, move it first.
3409 // It is done before all other moving stuff is done because it's hard to revert.
3410 $dbw = wfGetDB( DB_MASTER
);
3411 if ( $this->getNamespace() == NS_FILE
) {
3412 $file = wfLocalFile( $this );
3413 if ( $file->exists() ) {
3414 $status = $file->move( $nt );
3415 if ( !$status->isOk() ) {
3416 return $status->getErrorsArray();
3420 // Clear RepoGroup process cache
3421 RepoGroup
::singleton()->clearCache( $this );
3422 RepoGroup
::singleton()->clearCache( $nt ); # clear false negative cache
3424 $dbw->begin(); # If $file was a LocalFile, its transaction would have closed our own.
3425 $pageid = $this->getArticleID( self
::GAID_FOR_UPDATE
);
3426 $protected = $this->isProtected();
3427 $pageCountChange = ( $createRedirect ?
1 : 0 ) - ( $nt->exists() ?
1 : 0 );
3429 // Do the actual move
3430 $err = $this->moveToInternal( $nt, $reason, $createRedirect );
3431 if ( is_array( $err ) ) {
3432 # @todo FIXME: What about the File we have already moved?
3437 $redirid = $this->getArticleID();
3439 // Refresh the sortkey for this row. Be careful to avoid resetting
3440 // cl_timestamp, which may disturb time-based lists on some sites.
3441 $prefixes = $dbw->select(
3443 array( 'cl_sortkey_prefix', 'cl_to' ),
3444 array( 'cl_from' => $pageid ),
3447 foreach ( $prefixes as $prefixRow ) {
3448 $prefix = $prefixRow->cl_sortkey_prefix
;
3449 $catTo = $prefixRow->cl_to
;
3450 $dbw->update( 'categorylinks',
3452 'cl_sortkey' => Collation
::singleton()->getSortKey(
3453 $nt->getCategorySortkey( $prefix ) ),
3454 'cl_timestamp=cl_timestamp' ),
3456 'cl_from' => $pageid,
3457 'cl_to' => $catTo ),
3463 # Protect the redirect title as the title used to be...
3464 $dbw->insertSelect( 'page_restrictions', 'page_restrictions',
3466 'pr_page' => $redirid,
3467 'pr_type' => 'pr_type',
3468 'pr_level' => 'pr_level',
3469 'pr_cascade' => 'pr_cascade',
3470 'pr_user' => 'pr_user',
3471 'pr_expiry' => 'pr_expiry'
3473 array( 'pr_page' => $pageid ),
3477 # Update the protection log
3478 $log = new LogPage( 'protect' );
3479 $comment = wfMsgForContent( 'prot_1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
3481 $comment .= wfMsgForContent( 'colon-separator' ) . $reason;
3483 // @todo FIXME: $params?
3484 $log->addEntry( 'move_prot', $nt, $comment, array( $this->getPrefixedText() ) );
3488 $oldnamespace = $this->getNamespace() & ~
1;
3489 $newnamespace = $nt->getNamespace() & ~
1;
3490 $oldtitle = $this->getDBkey();
3491 $newtitle = $nt->getDBkey();
3493 if ( $oldnamespace != $newnamespace ||
$oldtitle != $newtitle ) {
3494 WatchedItem
::duplicateEntries( $this, $nt );
3497 # Update search engine
3498 $u = new SearchUpdate( $pageid, $nt->getPrefixedDBkey() );
3500 $u = new SearchUpdate( $redirid, $this->getPrefixedDBkey(), '' );
3506 if ( $this->isContentPage() && !$nt->isContentPage() ) {
3507 # No longer a content page
3508 # Not viewed, edited, removing
3509 $u = new SiteStatsUpdate( 0, 1, -1, $pageCountChange );
3510 } elseif ( !$this->isContentPage() && $nt->isContentPage() ) {
3511 # Now a content page
3512 # Not viewed, edited, adding
3513 $u = new SiteStatsUpdate( 0, 1, +
1, $pageCountChange );
3514 } elseif ( $pageCountChange ) {
3516 $u = new SiteStatsUpdate( 0, 0, 0, 1 );
3525 # Update message cache for interface messages
3526 if ( $this->getNamespace() == NS_MEDIAWIKI
) {
3527 # @bug 17860: old article can be deleted, if this the case,
3528 # delete it from message cache
3529 if ( $this->getArticleID() === 0 ) {
3530 MessageCache
::singleton()->replace( $this->getDBkey(), false );
3532 $rev = Revision
::newFromTitle( $this );
3533 MessageCache
::singleton()->replace( $this->getDBkey(), $rev->getText() );
3536 if ( $nt->getNamespace() == NS_MEDIAWIKI
) {
3537 $rev = Revision
::newFromTitle( $nt );
3538 MessageCache
::singleton()->replace( $nt->getDBkey(), $rev->getText() );
3541 wfRunHooks( 'TitleMoveComplete', array( &$this, &$nt, &$wgUser, $pageid, $redirid ) );
3546 * Move page to a title which is either a redirect to the
3547 * source page or nonexistent
3549 * @param $nt Title the page to move to, which should be a redirect or nonexistent
3550 * @param $reason String The reason for the move
3551 * @param $createRedirect Bool Whether to leave a redirect at the old title. Ignored
3552 * if the user doesn't have the suppressredirect right
3554 private function moveToInternal( &$nt, $reason = '', $createRedirect = true ) {
3555 global $wgUser, $wgContLang;
3557 if ( $nt->exists() ) {
3558 $moveOverRedirect = true;
3559 $logType = 'move_redir';
3561 $moveOverRedirect = false;
3565 $redirectSuppressed = !$createRedirect && $wgUser->isAllowed( 'suppressredirect' );
3567 $logEntry = new ManualLogEntry( 'move', $logType );
3568 $logEntry->setPerformer( $wgUser );
3569 $logEntry->setTarget( $this );
3570 $logEntry->setComment( $reason );
3571 $logEntry->setParameters( array(
3572 '4::target' => $nt->getPrefixedText(),
3573 '5::noredir' => $redirectSuppressed ?
'1': '0',
3576 $formatter = LogFormatter
::newFromEntry( $logEntry );
3577 $formatter->setContext( RequestContext
::newExtraneousContext( $this ) );
3578 $comment = $formatter->getPlainActionText();
3580 $comment .= wfMsgForContent( 'colon-separator' ) . $reason;
3582 # Truncate for whole multibyte characters.
3583 $comment = $wgContLang->truncate( $comment, 255 );
3585 $oldid = $this->getArticleID();
3586 $latest = $this->getLatestRevID();
3588 $dbw = wfGetDB( DB_MASTER
);
3590 if ( $moveOverRedirect ) {
3591 $rcts = $dbw->timestamp( $nt->getEarliestRevTime() );
3593 $newid = $nt->getArticleID();
3594 $newns = $nt->getNamespace();
3595 $newdbk = $nt->getDBkey();
3597 # Delete the old redirect. We don't save it to history since
3598 # by definition if we've got here it's rather uninteresting.
3599 # We have to remove it so that the next step doesn't trigger
3600 # a conflict on the unique namespace+title index...
3601 $dbw->delete( 'page', array( 'page_id' => $newid ), __METHOD__
);
3602 if ( !$dbw->cascadingDeletes() ) {
3603 $dbw->delete( 'revision', array( 'rev_page' => $newid ), __METHOD__
);
3605 $dbw->delete( 'pagelinks', array( 'pl_from' => $newid ), __METHOD__
);
3606 $dbw->delete( 'imagelinks', array( 'il_from' => $newid ), __METHOD__
);
3607 $dbw->delete( 'categorylinks', array( 'cl_from' => $newid ), __METHOD__
);
3608 $dbw->delete( 'templatelinks', array( 'tl_from' => $newid ), __METHOD__
);
3609 $dbw->delete( 'externallinks', array( 'el_from' => $newid ), __METHOD__
);
3610 $dbw->delete( 'langlinks', array( 'll_from' => $newid ), __METHOD__
);
3611 $dbw->delete( 'iwlinks', array( 'iwl_from' => $newid ), __METHOD__
);
3612 $dbw->delete( 'redirect', array( 'rd_from' => $newid ), __METHOD__
);
3613 $dbw->delete( 'page_props', array( 'pp_page' => $newid ), __METHOD__
);
3615 // If the target page was recently created, it may have an entry in recentchanges still
3616 $dbw->delete( 'recentchanges',
3617 array( 'rc_timestamp' => $rcts, 'rc_namespace' => $newns, 'rc_title' => $newdbk, 'rc_new' => 1 ),
3622 # Save a null revision in the page's history notifying of the move
3623 $nullRevision = Revision
::newNullRevision( $dbw, $oldid, $comment, true );
3624 if ( !is_object( $nullRevision ) ) {
3625 throw new MWException( 'No valid null revision produced in ' . __METHOD__
);
3627 $nullRevId = $nullRevision->insertOn( $dbw );
3629 $now = wfTimestampNow();
3630 # Change the name of the target page:
3631 $dbw->update( 'page',
3633 'page_touched' => $dbw->timestamp( $now ),
3634 'page_namespace' => $nt->getNamespace(),
3635 'page_title' => $nt->getDBkey(),
3636 'page_latest' => $nullRevId,
3638 /* WHERE */ array( 'page_id' => $oldid ),
3641 $nt->resetArticleID( $oldid );
3643 $article = WikiPage
::factory( $nt );
3644 wfRunHooks( 'NewRevisionFromEditComplete',
3645 array( $article, $nullRevision, $latest, $wgUser ) );
3646 $article->setCachedLastEditTime( $now );
3648 # Recreate the redirect, this time in the other direction.
3649 if ( $createRedirect ||
!$wgUser->isAllowed( 'suppressredirect' ) ) {
3650 $mwRedir = MagicWord
::get( 'redirect' );
3651 $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
3652 $redirectArticle = WikiPage
::factory( $this );
3653 $newid = $redirectArticle->insertOn( $dbw );
3654 if ( $newid ) { // sanity
3655 $redirectRevision = new Revision( array(
3657 'comment' => $comment,
3658 'text' => $redirectText ) );
3659 $redirectRevision->insertOn( $dbw );
3660 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
3662 wfRunHooks( 'NewRevisionFromEditComplete',
3663 array( $redirectArticle, $redirectRevision, false, $wgUser ) );
3665 # Now, we record the link from the redirect to the new title.
3666 # It should have no other outgoing links...
3667 $dbw->delete( 'pagelinks', array( 'pl_from' => $newid ), __METHOD__
);
3668 $dbw->insert( 'pagelinks',
3670 'pl_from' => $newid,
3671 'pl_namespace' => $nt->getNamespace(),
3672 'pl_title' => $nt->getDBkey() ),
3676 $this->resetArticleID( 0 );
3680 $logid = $logEntry->insert();
3681 $logEntry->publish( $logid );
3683 # Purge caches for old and new titles
3684 if ( $moveOverRedirect ) {
3685 # A simple purge is enough when moving over a redirect
3688 # Purge caches as per article creation, including any pages that link to this title
3689 Article
::onArticleCreate( $nt );
3691 $this->purgeSquid();
3695 * Move this page's subpages to be subpages of $nt
3697 * @param $nt Title Move target
3698 * @param $auth bool Whether $wgUser's permissions should be checked
3699 * @param $reason string The reason for the move
3700 * @param $createRedirect bool Whether to create redirects from the old subpages to
3701 * the new ones Ignored if the user doesn't have the 'suppressredirect' right
3702 * @return mixed array with old page titles as keys, and strings (new page titles) or
3703 * arrays (errors) as values, or an error array with numeric indices if no pages
3706 public function moveSubpages( $nt, $auth = true, $reason = '', $createRedirect = true ) {
3707 global $wgMaximumMovedPages;
3708 // Check permissions
3709 if ( !$this->userCan( 'move-subpages' ) ) {
3710 return array( 'cant-move-subpages' );
3712 // Do the source and target namespaces support subpages?
3713 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
3714 return array( 'namespace-nosubpages',
3715 MWNamespace
::getCanonicalName( $this->getNamespace() ) );
3717 if ( !MWNamespace
::hasSubpages( $nt->getNamespace() ) ) {
3718 return array( 'namespace-nosubpages',
3719 MWNamespace
::getCanonicalName( $nt->getNamespace() ) );
3722 $subpages = $this->getSubpages( $wgMaximumMovedPages +
1 );
3725 foreach ( $subpages as $oldSubpage ) {
3727 if ( $count > $wgMaximumMovedPages ) {
3728 $retval[$oldSubpage->getPrefixedTitle()] =
3729 array( 'movepage-max-pages',
3730 $wgMaximumMovedPages );
3734 // We don't know whether this function was called before
3735 // or after moving the root page, so check both
3737 if ( $oldSubpage->getArticleId() == $this->getArticleId() ||
3738 $oldSubpage->getArticleID() == $nt->getArticleId() )
3740 // When moving a page to a subpage of itself,
3741 // don't move it twice
3744 $newPageName = preg_replace(
3745 '#^' . preg_quote( $this->getDBkey(), '#' ) . '#',
3746 StringUtils
::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
3747 $oldSubpage->getDBkey() );
3748 if ( $oldSubpage->isTalkPage() ) {
3749 $newNs = $nt->getTalkPage()->getNamespace();
3751 $newNs = $nt->getSubjectPage()->getNamespace();
3753 # Bug 14385: we need makeTitleSafe because the new page names may
3754 # be longer than 255 characters.
3755 $newSubpage = Title
::makeTitleSafe( $newNs, $newPageName );
3757 $success = $oldSubpage->moveTo( $newSubpage, $auth, $reason, $createRedirect );
3758 if ( $success === true ) {
3759 $retval[$oldSubpage->getPrefixedText()] = $newSubpage->getPrefixedText();
3761 $retval[$oldSubpage->getPrefixedText()] = $success;
3768 * Checks if this page is just a one-rev redirect.
3769 * Adds lock, so don't use just for light purposes.
3773 public function isSingleRevRedirect() {
3774 $dbw = wfGetDB( DB_MASTER
);
3776 $row = $dbw->selectRow( 'page',
3777 array( 'page_is_redirect', 'page_latest', 'page_id' ),
3780 array( 'FOR UPDATE' )
3782 # Cache some fields we may want
3783 $this->mArticleID
= $row ?
intval( $row->page_id
) : 0;
3784 $this->mRedirect
= $row ?
(bool)$row->page_is_redirect
: false;
3785 $this->mLatestID
= $row ?
intval( $row->page_latest
) : false;
3786 if ( !$this->mRedirect
) {
3789 # Does the article have a history?
3790 $row = $dbw->selectField( array( 'page', 'revision' ),
3792 array( 'page_namespace' => $this->getNamespace(),
3793 'page_title' => $this->getDBkey(),
3795 'page_latest != rev_id'
3798 array( 'FOR UPDATE' )
3800 # Return true if there was no history
3801 return ( $row === false );
3805 * Checks if $this can be moved to a given Title
3806 * - Selects for update, so don't call it unless you mean business
3808 * @param $nt Title the new title to check
3811 public function isValidMoveTarget( $nt ) {
3812 # Is it an existing file?
3813 if ( $nt->getNamespace() == NS_FILE
) {
3814 $file = wfLocalFile( $nt );
3815 if ( $file->exists() ) {
3816 wfDebug( __METHOD__
. ": file exists\n" );
3820 # Is it a redirect with no history?
3821 if ( !$nt->isSingleRevRedirect() ) {
3822 wfDebug( __METHOD__
. ": not a one-rev redirect\n" );
3825 # Get the article text
3826 $rev = Revision
::newFromTitle( $nt );
3827 if( !is_object( $rev ) ){
3830 $text = $rev->getText();
3831 # Does the redirect point to the source?
3832 # Or is it a broken self-redirect, usually caused by namespace collisions?
3834 if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $text, $m ) ) {
3835 $redirTitle = Title
::newFromText( $m[1] );
3836 if ( !is_object( $redirTitle ) ||
3837 ( $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() &&
3838 $redirTitle->getPrefixedDBkey() != $nt->getPrefixedDBkey() ) ) {
3839 wfDebug( __METHOD__
. ": redirect points to other page\n" );
3844 wfDebug( __METHOD__
. ": failsafe\n" );
3851 * Get categories to which this Title belongs and return an array of
3852 * categories' names.
3854 * @return Array of parents in the form:
3855 * $parent => $currentarticle
3857 public function getParentCategories() {
3862 $titleKey = $this->getArticleId();
3864 if ( $titleKey === 0 ) {
3868 $dbr = wfGetDB( DB_SLAVE
);
3870 $res = $dbr->select( 'categorylinks', '*',
3872 'cl_from' => $titleKey,
3878 if ( $dbr->numRows( $res ) > 0 ) {
3879 foreach ( $res as $row ) {
3880 // $data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$row->cl_to);
3881 $data[$wgContLang->getNSText( NS_CATEGORY
) . ':' . $row->cl_to
] = $this->getFullText();
3888 * Get a tree of parent categories
3890 * @param $children Array with the children in the keys, to check for circular refs
3891 * @return Array Tree of parent categories
3893 public function getParentCategoryTree( $children = array() ) {
3895 $parents = $this->getParentCategories();
3898 foreach ( $parents as $parent => $current ) {
3899 if ( array_key_exists( $parent, $children ) ) {
3900 # Circular reference
3901 $stack[$parent] = array();
3903 $nt = Title
::newFromText( $parent );
3905 $stack[$parent] = $nt->getParentCategoryTree( $children +
array( $parent => 1 ) );
3915 * Get an associative array for selecting this title from
3918 * @return Array suitable for the $where parameter of DB::select()
3920 public function pageCond() {
3921 if ( $this->mArticleID
> 0 ) {
3922 // PK avoids secondary lookups in InnoDB, shouldn't hurt other DBs
3923 return array( 'page_id' => $this->mArticleID
);
3925 return array( 'page_namespace' => $this->mNamespace
, 'page_title' => $this->mDbkeyform
);
3930 * Get the revision ID of the previous revision
3932 * @param $revId Int Revision ID. Get the revision that was before this one.
3933 * @param $flags Int Title::GAID_FOR_UPDATE
3934 * @return Int|Bool Old revision ID, or FALSE if none exists
3936 public function getPreviousRevisionID( $revId, $flags = 0 ) {
3937 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
3938 return $db->selectField( 'revision', 'rev_id',
3940 'rev_page' => $this->getArticleId( $flags ),
3941 'rev_id < ' . intval( $revId )
3944 array( 'ORDER BY' => 'rev_id DESC' )
3949 * Get the revision ID of the next revision
3951 * @param $revId Int Revision ID. Get the revision that was after this one.
3952 * @param $flags Int Title::GAID_FOR_UPDATE
3953 * @return Int|Bool Next revision ID, or FALSE if none exists
3955 public function getNextRevisionID( $revId, $flags = 0 ) {
3956 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
3957 return $db->selectField( 'revision', 'rev_id',
3959 'rev_page' => $this->getArticleId( $flags ),
3960 'rev_id > ' . intval( $revId )
3963 array( 'ORDER BY' => 'rev_id' )
3968 * Get the first revision of the page
3970 * @param $flags Int Title::GAID_FOR_UPDATE
3971 * @return Revision|Null if page doesn't exist
3973 public function getFirstRevision( $flags = 0 ) {
3974 $pageId = $this->getArticleId( $flags );
3976 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
3977 $row = $db->selectRow( 'revision', '*',
3978 array( 'rev_page' => $pageId ),
3980 array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 1 )
3983 return new Revision( $row );
3990 * Get the oldest revision timestamp of this page
3992 * @param $flags Int Title::GAID_FOR_UPDATE
3993 * @return String: MW timestamp
3995 public function getEarliestRevTime( $flags = 0 ) {
3996 $rev = $this->getFirstRevision( $flags );
3997 return $rev ?
$rev->getTimestamp() : null;
4001 * Check if this is a new page
4005 public function isNewPage() {
4006 $dbr = wfGetDB( DB_SLAVE
);
4007 return (bool)$dbr->selectField( 'page', 'page_is_new', $this->pageCond(), __METHOD__
);
4011 * Get the number of revisions between the given revision.
4012 * Used for diffs and other things that really need it.
4014 * @param $old int|Revision Old revision or rev ID (first before range)
4015 * @param $new int|Revision New revision or rev ID (first after range)
4016 * @return Int Number of revisions between these revisions.
4018 public function countRevisionsBetween( $old, $new ) {
4019 if ( !( $old instanceof Revision
) ) {
4020 $old = Revision
::newFromTitle( $this, (int)$old );
4022 if ( !( $new instanceof Revision
) ) {
4023 $new = Revision
::newFromTitle( $this, (int)$new );
4025 if ( !$old ||
!$new ) {
4026 return 0; // nothing to compare
4028 $dbr = wfGetDB( DB_SLAVE
);
4029 return (int)$dbr->selectField( 'revision', 'count(*)',
4031 'rev_page' => $this->getArticleId(),
4032 'rev_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4033 'rev_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4040 * Get the number of authors between the given revision IDs.
4041 * Used for diffs and other things that really need it.
4043 * @param $old int|Revision Old revision or rev ID (first before range)
4044 * @param $new int|Revision New revision or rev ID (first after range)
4045 * @param $limit Int Maximum number of authors
4046 * @return Int Number of revision authors between these revisions.
4048 public function countAuthorsBetween( $old, $new, $limit ) {
4049 if ( !( $old instanceof Revision
) ) {
4050 $old = Revision
::newFromTitle( $this, (int)$old );
4052 if ( !( $new instanceof Revision
) ) {
4053 $new = Revision
::newFromTitle( $this, (int)$new );
4055 if ( !$old ||
!$new ) {
4056 return 0; // nothing to compare
4058 $dbr = wfGetDB( DB_SLAVE
);
4059 $res = $dbr->select( 'revision', 'DISTINCT rev_user_text',
4061 'rev_page' => $this->getArticleID(),
4062 'rev_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4063 'rev_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4065 array( 'LIMIT' => $limit +
1 ) // add one so caller knows it was truncated
4067 return (int)$dbr->numRows( $res );
4071 * Compare with another title.
4073 * @param $title Title
4076 public function equals( Title
$title ) {
4077 // Note: === is necessary for proper matching of number-like titles.
4078 return $this->getInterwiki() === $title->getInterwiki()
4079 && $this->getNamespace() == $title->getNamespace()
4080 && $this->getDBkey() === $title->getDBkey();
4084 * Check if this title is a subpage of another title
4086 * @param $title Title
4089 public function isSubpageOf( Title
$title ) {
4090 return $this->getInterwiki() === $title->getInterwiki()
4091 && $this->getNamespace() == $title->getNamespace()
4092 && strpos( $this->getDBkey(), $title->getDBkey() . '/' ) === 0;
4096 * Check if page exists. For historical reasons, this function simply
4097 * checks for the existence of the title in the page table, and will
4098 * thus return false for interwiki links, special pages and the like.
4099 * If you want to know if a title can be meaningfully viewed, you should
4100 * probably call the isKnown() method instead.
4104 public function exists() {
4105 return $this->getArticleId() != 0;
4109 * Should links to this title be shown as potentially viewable (i.e. as
4110 * "bluelinks"), even if there's no record by this title in the page
4113 * This function is semi-deprecated for public use, as well as somewhat
4114 * misleadingly named. You probably just want to call isKnown(), which
4115 * calls this function internally.
4117 * (ISSUE: Most of these checks are cheap, but the file existence check
4118 * can potentially be quite expensive. Including it here fixes a lot of
4119 * existing code, but we might want to add an optional parameter to skip
4120 * it and any other expensive checks.)
4124 public function isAlwaysKnown() {
4125 if ( $this->mInterwiki
!= '' ) {
4126 return true; // any interwiki link might be viewable, for all we know
4128 switch( $this->mNamespace
) {
4131 // file exists, possibly in a foreign repo
4132 return (bool)wfFindFile( $this );
4134 // valid special page
4135 return SpecialPageFactory
::exists( $this->getDBkey() );
4137 // selflink, possibly with fragment
4138 return $this->mDbkeyform
== '';
4140 // known system message
4141 return $this->hasSourceText() !== false;
4148 * Does this title refer to a page that can (or might) be meaningfully
4149 * viewed? In particular, this function may be used to determine if
4150 * links to the title should be rendered as "bluelinks" (as opposed to
4151 * "redlinks" to non-existent pages).
4155 public function isKnown() {
4156 return $this->isAlwaysKnown() ||
$this->exists();
4160 * Does this page have source text?
4164 public function hasSourceText() {
4165 if ( $this->exists() ) {
4169 if ( $this->mNamespace
== NS_MEDIAWIKI
) {
4170 // If the page doesn't exist but is a known system message, default
4171 // message content will be displayed, same for language subpages-
4172 // Use always content language to avoid loading hundreds of languages
4173 // to get the link color.
4175 list( $name, $lang ) = MessageCache
::singleton()->figureMessage( $wgContLang->lcfirst( $this->getText() ) );
4176 $message = wfMessage( $name )->inLanguage( $wgContLang )->useDatabase( false );
4177 return $message->exists();
4184 * Get the default message text or false if the message doesn't exist
4186 * @return String or false
4188 public function getDefaultMessageText() {
4191 if ( $this->getNamespace() != NS_MEDIAWIKI
) { // Just in case
4195 list( $name, $lang ) = MessageCache
::singleton()->figureMessage( $wgContLang->lcfirst( $this->getText() ) );
4196 $message = wfMessage( $name )->inLanguage( $lang )->useDatabase( false );
4198 if ( $message->exists() ) {
4199 return $message->plain();
4206 * Updates page_touched for this page; called from LinksUpdate.php
4208 * @return Bool true if the update succeded
4210 public function invalidateCache() {
4211 if ( wfReadOnly() ) {
4214 $dbw = wfGetDB( DB_MASTER
);
4215 $success = $dbw->update(
4217 array( 'page_touched' => $dbw->timestamp() ),
4221 HTMLFileCache
::clearFileCache( $this );
4226 * Update page_touched timestamps and send squid purge messages for
4227 * pages linking to this title. May be sent to the job queue depending
4228 * on the number of links. Typically called on create and delete.
4230 public function touchLinks() {
4231 $u = new HTMLCacheUpdate( $this, 'pagelinks' );
4234 if ( $this->getNamespace() == NS_CATEGORY
) {
4235 $u = new HTMLCacheUpdate( $this, 'categorylinks' );
4241 * Get the last touched timestamp
4243 * @param $db DatabaseBase: optional db
4244 * @return String last-touched timestamp
4246 public function getTouched( $db = null ) {
4247 $db = isset( $db ) ?
$db : wfGetDB( DB_SLAVE
);
4248 $touched = $db->selectField( 'page', 'page_touched', $this->pageCond(), __METHOD__
);
4253 * Get the timestamp when this page was updated since the user last saw it.
4256 * @return String|Null
4258 public function getNotificationTimestamp( $user = null ) {
4259 global $wgUser, $wgShowUpdatedMarker;
4260 // Assume current user if none given
4264 // Check cache first
4265 $uid = $user->getId();
4266 // avoid isset here, as it'll return false for null entries
4267 if ( array_key_exists( $uid, $this->mNotificationTimestamp
) ) {
4268 return $this->mNotificationTimestamp
[$uid];
4270 if ( !$uid ||
!$wgShowUpdatedMarker ) {
4271 return $this->mNotificationTimestamp
[$uid] = false;
4273 // Don't cache too much!
4274 if ( count( $this->mNotificationTimestamp
) >= self
::CACHE_MAX
) {
4275 $this->mNotificationTimestamp
= array();
4277 $dbr = wfGetDB( DB_SLAVE
);
4278 $this->mNotificationTimestamp
[$uid] = $dbr->selectField( 'watchlist',
4279 'wl_notificationtimestamp',
4280 array( 'wl_namespace' => $this->getNamespace(),
4281 'wl_title' => $this->getDBkey(),
4282 'wl_user' => $user->getId()
4286 return $this->mNotificationTimestamp
[$uid];
4290 * Generate strings used for xml 'id' names in monobook tabs
4292 * @param $prepend string defaults to 'nstab-'
4293 * @return String XML 'id' name
4295 public function getNamespaceKey( $prepend = 'nstab-' ) {
4297 // Gets the subject namespace if this title
4298 $namespace = MWNamespace
::getSubject( $this->getNamespace() );
4299 // Checks if cononical namespace name exists for namespace
4300 if ( MWNamespace
::exists( $this->getNamespace() ) ) {
4301 // Uses canonical namespace name
4302 $namespaceKey = MWNamespace
::getCanonicalName( $namespace );
4304 // Uses text of namespace
4305 $namespaceKey = $this->getSubjectNsText();
4307 // Makes namespace key lowercase
4308 $namespaceKey = $wgContLang->lc( $namespaceKey );
4310 if ( $namespaceKey == '' ) {
4311 $namespaceKey = 'main';
4313 // Changes file to image for backwards compatibility
4314 if ( $namespaceKey == 'file' ) {
4315 $namespaceKey = 'image';
4317 return $prepend . $namespaceKey;
4321 * Get all extant redirects to this Title
4323 * @param $ns Int|Null Single namespace to consider; NULL to consider all namespaces
4324 * @return Array of Title redirects to this title
4326 public function getRedirectsHere( $ns = null ) {
4329 $dbr = wfGetDB( DB_SLAVE
);
4331 'rd_namespace' => $this->getNamespace(),
4332 'rd_title' => $this->getDBkey(),
4335 if ( !is_null( $ns ) ) {
4336 $where['page_namespace'] = $ns;
4339 $res = $dbr->select(
4340 array( 'redirect', 'page' ),
4341 array( 'page_namespace', 'page_title' ),
4346 foreach ( $res as $row ) {
4347 $redirs[] = self
::newFromRow( $row );
4353 * Check if this Title is a valid redirect target
4357 public function isValidRedirectTarget() {
4358 global $wgInvalidRedirectTargets;
4360 // invalid redirect targets are stored in a global array, but explicity disallow Userlogout here
4361 if ( $this->isSpecial( 'Userlogout' ) ) {
4365 foreach ( $wgInvalidRedirectTargets as $target ) {
4366 if ( $this->isSpecial( $target ) ) {
4375 * Get a backlink cache object
4377 * @return BacklinkCache
4379 function getBacklinkCache() {
4380 if ( is_null( $this->mBacklinkCache
) ) {
4381 $this->mBacklinkCache
= new BacklinkCache( $this );
4383 return $this->mBacklinkCache
;
4387 * Whether the magic words __INDEX__ and __NOINDEX__ function for this page.
4391 public function canUseNoindex() {
4392 global $wgContentNamespaces, $wgExemptFromUserRobotsControl;
4394 $bannedNamespaces = is_null( $wgExemptFromUserRobotsControl )
4395 ?
$wgContentNamespaces
4396 : $wgExemptFromUserRobotsControl;
4398 return !in_array( $this->mNamespace
, $bannedNamespaces );
4403 * Returns the raw sort key to be used for categories, with the specified
4404 * prefix. This will be fed to Collation::getSortKey() to get a
4405 * binary sortkey that can be used for actual sorting.
4407 * @param $prefix string The prefix to be used, specified using
4408 * {{defaultsort:}} or like [[Category:Foo|prefix]]. Empty for no
4412 public function getCategorySortkey( $prefix = '' ) {
4413 $unprefixed = $this->getText();
4415 // Anything that uses this hook should only depend
4416 // on the Title object passed in, and should probably
4417 // tell the users to run updateCollations.php --force
4418 // in order to re-sort existing category relations.
4419 wfRunHooks( 'GetDefaultSortkey', array( $this, &$unprefixed ) );
4420 if ( $prefix !== '' ) {
4421 # Separate with a line feed, so the unprefixed part is only used as
4422 # a tiebreaker when two pages have the exact same prefix.
4423 # In UCA, tab is the only character that can sort above LF
4424 # so we strip both of them from the original prefix.
4425 $prefix = strtr( $prefix, "\n\t", ' ' );
4426 return "$prefix\n$unprefixed";
4432 * Get the language in which the content of this page is written.
4433 * Defaults to $wgContLang, but in certain cases it can be e.g.
4434 * $wgLang (such as special pages, which are in the user language).
4437 * @return object Language
4439 public function getPageLanguage() {
4441 if ( $this->isSpecialPage() ) {
4442 // special pages are in the user language
4444 } elseif ( $this->isCssOrJsPage() ) {
4445 // css/js should always be LTR and is, in fact, English
4446 return wfGetLangObj( 'en' );
4447 } elseif ( $this->getNamespace() == NS_MEDIAWIKI
) {
4448 // Parse mediawiki messages with correct target language
4449 list( /* $unused */, $lang ) = MessageCache
::singleton()->figureMessage( $this->getText() );
4450 return wfGetLangObj( $lang );
4453 // If nothing special, it should be in the wiki content language
4454 $pageLang = $wgContLang;
4455 // Hook at the end because we don't want to override the above stuff
4456 wfRunHooks( 'PageContentLanguage', array( $this, &$pageLang, $wgLang ) );
4457 return wfGetLangObj( $pageLang );