* (bug 18634) Create API to fetch MediaWiki's language fallback tree structure
[lhc/web/wiklou.git] / includes / api / ApiQuerySiteinfo.php
index 244a665..4749610 100644 (file)
@@ -1,11 +1,10 @@
 <?php
-
-/*
- * Created on Sep 25, 2006
+/**
  *
- * API for MediaWiki 1.8+
  *
- * Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
+ * Created on Sep 25, 2006
+ *
+ * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
-if (!defined('MEDIAWIKI')) {
+if ( !defined( 'MEDIAWIKI' ) ) {
        // Eclipse helper - will be ignored in production
-       require_once ('ApiQueryBase.php');
+       require_once( 'ApiQueryBase.php' );
 }
 
 /**
  * A query action to return meta information about the wiki site.
  *
- * @addtogroup API
+ * @ingroup API
  */
 class ApiQuerySiteinfo extends ApiQueryBase {
 
-       public function __construct($query, $moduleName) {
-               parent :: __construct($query, $moduleName, 'si');
+       public function __construct( $query, $moduleName ) {
+               parent::__construct( $query, $moduleName, 'si' );
        }
 
        public function execute() {
-
                $params = $this->extractRequestParams();
-
-               foreach ($params['prop'] as $p) {
-                       switch ($p) {
-                               default :
-                                       ApiBase :: dieDebug(__METHOD__, "Unknown prop=$p");
-                               case 'general' :
-                                       $this->appendGeneralInfo($p);
+               $done = array();
+               foreach ( $params['prop'] as $p ) {
+                       switch ( $p ) {
+                               case 'general':
+                                       $fit = $this->appendGeneralInfo( $p );
+                                       break;
+                               case 'namespaces':
+                                       $fit = $this->appendNamespaces( $p );
+                                       break;
+                               case 'namespacealiases':
+                                       $fit = $this->appendNamespaceAliases( $p );
+                                       break;
+                               case 'specialpagealiases':
+                                       $fit = $this->appendSpecialPageAliases( $p );
+                                       break;
+                               case 'magicwords':
+                                       $fit = $this->appendMagicWords( $p );
+                                       break;
+                               case 'interwikimap':
+                                       $filteriw = isset( $params['filteriw'] ) ? $params['filteriw'] : false;
+                                       $fit = $this->appendInterwikiMap( $p, $filteriw );
+                                       break;
+                               case 'dbrepllag':
+                                       $fit = $this->appendDbReplLagInfo( $p, $params['showalldb'] );
+                                       break;
+                               case 'statistics':
+                                       $fit = $this->appendStatistics( $p );
+                                       break;
+                               case 'usergroups':
+                                       $fit = $this->appendUserGroups( $p, $params['numberingroup'] );
+                                       break;
+                               case 'extensions':
+                                       $fit = $this->appendExtensions( $p );
                                        break;
-                               case 'namespaces' :
-                                       $this->appendNamespaces($p);
+                               case 'fileextensions':
+                                       $fit = $this->appendFileExtensions( $p );
                                        break;
-                               case 'namespacealiases' :
-                                       $this->appendNamespaceAliases($p);
+                               case 'rightsinfo':
+                                       $fit = $this->appendRightsInfo( $p );
                                        break;
-                               case 'specialpagealiases' :
-                                       $this->appendSpecialPageAliases($p);
+                               case 'languages':
+                                       $fit = $this->appendLanguages( $p );
                                        break;
-                               case 'interwikimap' :
-                                       $filteriw = isset($params['filteriw']) ? $params['filteriw'] : false;
-                                       $this->appendInterwikiMap($p, $filteriw);
+                               case 'skins':
+                                       $fit = $this->appendSkins( $p );
                                        break;
-                               case 'dbrepllag' :
-                                       $this->appendDbReplLagInfo($p, $params['showalldb']);
+                               case 'extensiontags':
+                                       $fit = $this->appendExtensionTags( $p );
                                        break;
-                               case 'statistics' :
-                                       $this->appendStatistics($p);
+                               case 'functionhooks':
+                                       $fit = $this->appendFunctionHooks( $p );
                                        break;
-                               case 'usergroups' :
-                                       $this->appendUserGroups($p);
+                               case 'showhooks':
+                                       $fit = $this->appendSubscribedHooks( $p );
                                        break;
+                               default:
+                                       ApiBase::dieDebug( __METHOD__, "Unknown prop=$p" );
                        }
+                       if ( !$fit ) {
+                               // Abuse siprop as a query-continue parameter
+                               // and set it to all unprocessed props
+                               $this->setContinueEnumParameter( 'prop', implode( '|',
+                                               array_diff( $params['prop'], $done ) ) );
+                               break;
+                       }
+                       $done[] = $p;
                }
        }
 
-       protected function appendGeneralInfo($property) {
-               global $wgSitename, $wgVersion, $wgCapitalLinks, $wgRightsCode, $wgRightsText, $wgLanguageCode, $IP, $wgEnableWriteAPI, $wgLang;
+       protected function appendGeneralInfo( $property ) {
+               global $wgContLang;
 
-               $data = array ();
-               $mainPage = Title :: newFromText(wfMsgForContent('mainpage'));
+               $data = array();
+               $mainPage = Title::newMainPage();
                $data['mainpage'] = $mainPage->getPrefixedText();
-               $data['base'] = $mainPage->getFullUrl();
-               $data['sitename'] = $wgSitename;
-               $data['generator'] = "MediaWiki $wgVersion";
+               $data['base'] = wfExpandUrl( $mainPage->getFullUrl() );
+               $data['sitename'] = $GLOBALS['wgSitename'];
+               $data['generator'] = "MediaWiki {$GLOBALS['wgVersion']}";
+               $data['phpversion'] = phpversion();
+               $data['phpsapi'] = php_sapi_name();
+               $data['dbtype'] = $GLOBALS['wgDBtype'];
+               $data['dbversion'] = $this->getDB()->getServerVersion();
+
+               $svn = SpecialVersion::getSvnRevision( $GLOBALS['IP'] );
+               if ( $svn ) {
+                       $data['rev'] = $svn;
+               }
 
-               $svn = SpecialVersion::getSvnRevision ( $IP );
-               if ( $svn ) $data['rev'] = $svn;
+               // 'case-insensitive' option is reserved for future
+               $data['case'] = $GLOBALS['wgCapitalLinks'] ? 'first-letter' : 'case-sensitive';
 
-               $data['case'] = $wgCapitalLinks ? 'first-letter' : 'case-sensitive'; // 'case-insensitive' option is reserved for future
+               if ( isset( $GLOBALS['wgRightsCode'] ) ) {
+                       $data['rightscode'] = $GLOBALS['wgRightsCode'];
+               }
+               $data['rights'] = $GLOBALS['wgRightsText'];
+               $data['lang'] = $GLOBALS['wgLanguageCode'];
+
+               $fallbackLang = $wgContLang->getFallbackLanguageCode();
+               $fallbackLangArray = array();
+               while( $fallbackLang ) {
+                       $fallbackLangArray[] = array( 'code' => $fallbackLang );
+                       $fallbackLang = Language::getFallbackFor( $fallbackLang );
+               }
+               $data['fallback'] = $fallbackLangArray;
+               $this->getResult()->setIndexedTagName( $data['fallback'], 'lang' );
 
-               if (isset($wgRightsCode))
-                       $data['rightscode'] = $wgRightsCode;
-               $data['rights'] = $wgRightsText;
-               $data['lang'] = $wgLanguageCode;
-               $data['fallback8bitEncoding'] = $wgLang->fallback8bitEncoding();
+               if ( $wgContLang->isRTL() ) {
+                       $data['rtl'] = '';
+               }
+               $data['fallback8bitEncoding'] = $wgContLang->fallback8bitEncoding();
 
-               if ( $wgEnableWriteAPI )
+               if ( wfReadOnly() ) {
+                       $data['readonly'] = '';
+                       $data['readonlyreason'] = wfReadOnlyReason();
+               }
+               if ( $GLOBALS['wgEnableWriteAPI'] ) {
                        $data['writeapi'] = '';
+               }
 
-               $this->getResult()->addValue('query', $property, $data);
-       }
+               $tz = $GLOBALS['wgLocaltimezone'];
+               $offset = $GLOBALS['wgLocalTZoffset'];
+               if ( is_null( $tz ) ) {
+                       $tz = 'UTC';
+                       $offset = 0;
+               } elseif ( is_null( $offset ) ) {
+                       $offset = 0;
+               }
+               $data['timezone'] = $tz;
+               $data['timeoffset'] = intval( $offset );
+               $data['articlepath'] = $GLOBALS['wgArticlePath'];
+               $data['scriptpath'] = $GLOBALS['wgScriptPath'];
+               $data['script'] = $GLOBALS['wgScript'];
+               $data['variantarticlepath'] = $GLOBALS['wgVariantArticlePath'];
+               $data['server'] = $GLOBALS['wgServer'];
+               $data['wikiid'] = wfWikiID();
+               $data['time'] = wfTimestamp( TS_ISO_8601, time() );
+
+               if ( $GLOBALS['wgMiserMode'] ) {
+                       $data['misermode'] = '';
+               }
 
-       protected function appendNamespaces($property) {
-               global $wgContLang, $wgNamespacesWithSubpages;
+               wfRunHooks( 'APIQuerySiteInfoGeneralInfo', array( $this, &$data ) );
+
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
 
-               $data = array ();
-               foreach ($wgContLang->getFormattedNamespaces() as $ns => $title) {
-                       $data[$ns] = array (
-                               'id' => $ns
+       protected function appendNamespaces( $property ) {
+               global $wgContLang;
+               $data = array();
+               foreach ( $wgContLang->getFormattedNamespaces() as $ns => $title ) {
+                       $data[$ns] = array(
+                               'id' => intval( $ns ),
+                               'case' => MWNamespace::isCapitalized( $ns ) ? 'first-letter' : 'case-sensitive',
                        );
-                       ApiResult :: setContent($data[$ns], $title);
-                       if(@$wgNamespacesWithSubpages[$ns])
+                       ApiResult::setContent( $data[$ns], $title );
+                       $canonical = MWNamespace::getCanonicalName( $ns );
+
+                       if ( MWNamespace::hasSubpages( $ns ) ) {
                                $data[$ns]['subpages'] = '';
+                       }
+
+                       if ( $canonical ) {
+                               $data[$ns]['canonical'] = strtr( $canonical, '_', ' ' );
+                       }
+
+                       if ( MWNamespace::isContent( $ns ) ) {
+                               $data[$ns]['content'] = '';
+                       }
                }
 
-               $this->getResult()->setIndexedTagName($data, 'ns');
-               $this->getResult()->addValue('query', $property, $data);
+               $this->getResult()->setIndexedTagName( $data, 'ns' );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendNamespaceAliases($property) {
-               global $wgNamespaceAliases;
-
-               $data = array ();
-               foreach ($wgNamespaceAliases as $title => $ns) {
-                       $item = array (
-                               'id' => $ns
+       protected function appendNamespaceAliases( $property ) {
+               global $wgNamespaceAliases, $wgContLang;
+               $aliases = array_merge( $wgNamespaceAliases, $wgContLang->getNamespaceAliases() );
+               $namespaces = $wgContLang->getNamespaces();
+               $data = array();
+               foreach ( $aliases as $title => $ns ) {
+                       if ( $namespaces[$ns] == $title ) {
+                               // Don't list duplicates
+                               continue;
+                       }
+                       $item = array(
+                               'id' => intval( $ns )
                        );
-                       ApiResult :: setContent($item, strtr($title, '_', ' '));
+                       ApiResult::setContent( $item, strtr( $title, '_', ' ' ) );
                        $data[] = $item;
                }
 
-               $this->getResult()->setIndexedTagName($data, 'ns');
-               $this->getResult()->addValue('query', $property, $data);
+               $this->getResult()->setIndexedTagName( $data, 'ns' );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendSpecialPageAliases($property)
-       {
-               global $wgLang;
+       protected function appendSpecialPageAliases( $property ) {
+               global $wgContLang;
                $data = array();
-               foreach($wgLang->getSpecialPageAliases() as $specialpage => $aliases)
-               {
-                       $arr = array('realname' => $specialpage, 'aliases' => $aliases);
-                       $this->getResult()->setIndexedTagName($arr['aliases'], 'alias');
+               foreach ( $wgContLang->getSpecialPageAliases() as $specialpage => $aliases ) {
+                       $arr = array( 'realname' => $specialpage, 'aliases' => $aliases );
+                       $this->getResult()->setIndexedTagName( $arr['aliases'], 'alias' );
                        $data[] = $arr;
                }
-               $this->getResult()->setIndexedTagName($data, 'specialpage');
-               $this->getResult()->addValue('query', $property, $data);
+               $this->getResult()->setIndexedTagName( $data, 'specialpage' );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendInterwikiMap($property, $filter) {
-
-               $this->resetQueryParams();
-               $this->addTables('interwiki');
-               $this->addFields(array('iw_prefix', 'iw_local', 'iw_url'));
+       protected function appendMagicWords( $property ) {
+               global $wgContLang;
+               $data = array();
+               foreach ( $wgContLang->getMagicWords() as $magicword => $aliases ) {
+                       $caseSensitive = array_shift( $aliases );
+                       $arr = array( 'name' => $magicword, 'aliases' => $aliases );
+                       if ( $caseSensitive ) {
+                               $arr['case-sensitive'] = '';
+                       }
+                       $this->getResult()->setIndexedTagName( $arr['aliases'], 'alias' );
+                       $data[] = $arr;
+               }
+               $this->getResult()->setIndexedTagName( $data, 'magicword' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
 
-               if($filter === 'local') {
-                       $this->addWhere('iw_local = 1');
-               } elseif($filter === '!local') {
-                       $this->addWhere('iw_local = 0');
-               } elseif($filter !== false) {
-                       ApiBase :: dieDebug(__METHOD__, "Unknown filter=$filter");
+       protected function appendInterwikiMap( $property, $filter ) {
+               $local = null;
+               if ( $filter === 'local' ) {
+                       $local = 1;
+               } elseif ( $filter === '!local' ) {
+                       $local = 0;
+               } elseif ( $filter ) {
+                       ApiBase::dieDebug( __METHOD__, "Unknown filter=$filter" );
                }
 
-               $this->addOption('ORDER BY', 'iw_prefix');
+               $params = $this->extractRequestParams();
+               $langCode = isset( $params['inlanguagecode '] ) ? $params['inlanguagecode '] : '';
 
-               $db = $this->getDB();
-               $res = $this->select(__METHOD__);
+               if( $langCode ) {
+                       $langNames = Language::getTranslatedLanguageNames( $langCode );
+               } else {
+                       $langNames = Language::getLanguageNames();
+               }
 
+               $getPrefixes = Interwiki::getAllPrefixes( $local );
                $data = array();
-               $langNames = Language::getLanguageNames();
-               while($row = $db->fetchObject($res))
-               {
+
+               foreach ( $getPrefixes as $row ) {
+                       $prefix = $row['iw_prefix'];
                        $val = array();
-                       $val['prefix'] = $row->iw_prefix;
-                       if($row->iw_local == '1')
+                       $val['prefix'] = $prefix;
+                       if ( $row['iw_local'] == '1' ) {
                                $val['local'] = '';
-//                     $val['trans'] = intval($row->iw_trans); // should this be exposed?
-                       if(isset($langNames[$row->iw_prefix]))
-                               $val['language'] = $langNames[$row->iw_prefix];
-                       $val['url'] = $row->iw_url;
+                       }
+                       // $val['trans'] = intval( $row['iw_trans'] ); // should this be exposed?
+                       if ( isset( $langNames[$prefix] ) ) {
+                               $val['language'] = $langNames[$prefix];
+                       }
+                       $val['url'] = wfExpandUrl( $row['iw_url'] );
+                       if( isset( $row['iw_wikiid'] ) ) {
+                               $val['wikiid'] = $row['iw_wikiid'];
+                       }
+                       if( isset( $row['iw_api'] ) ) {
+                               $val['api'] = $row['iw_api'];
+                       }
 
                        $data[] = $val;
                }
-               $db->freeResult($res);
 
-               $this->getResult()->setIndexedTagName($data, 'iw');
-               $this->getResult()->addValue('query', $property, $data);
+               $this->getResult()->setIndexedTagName( $data, 'iw' );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendDbReplLagInfo($property, $includeAll) {
+       protected function appendDbReplLagInfo( $property, $includeAll ) {
                global $wgShowHostnames;
-
                $data = array();
+               $lb = wfGetLB();
+               if ( $includeAll ) {
+                       if ( !$wgShowHostnames ) {
+                               $this->dieUsage( 'Cannot view all servers info unless $wgShowHostnames is true', 'includeAllDenied' );
+                       }
 
-               if ($includeAll) {
-                       if (!$wgShowHostnames)
-                               $this->dieUsage('Cannot view all servers info unless $wgShowHostnames is true', 'includeAllDenied');
-
-                       $lb = wfGetLB();
                        $lags = $lb->getLagTimes();
-                       foreach( $lags as $i => $lag ) {
-                               $data[] = array (
+                       foreach ( $lags as $i => $lag ) {
+                               $data[] = array(
                                        'host' => $lb->getServerName( $i ),
-                                       'lag' => $lag);
+                                       'lag' => $lag
+                               );
                        }
                } else {
-                       list( $host, $lag ) = wfGetLB()->getMaxLag();
-                       $data[] = array (
-                               'host' => $wgShowHostnames ? $host : '',
-                               'lag' => $lag);
+                       list( $host, $lag, $index ) = $lb->getMaxLag();
+                       $data[] = array(
+                               'host' => $wgShowHostnames
+                                               ? $lb->getServerName( $index )
+                                               : '',
+                               'lag' => intval( $lag )
+                       );
                }
 
                $result = $this->getResult();
-               $result->setIndexedTagName($data, 'db');
-               $result->addValue('query', $property, $data);
+               $result->setIndexedTagName( $data, 'db' );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendStatistics($property) {
-               $data = array ();
-               $data['pages'] = intval(SiteStats::pages());
-               $data['articles'] = intval(SiteStats::articles());
-               $data['views'] = intval(SiteStats::views());
-               $data['edits'] = intval(SiteStats::edits());
-               $data['images'] = intval(SiteStats::images());
-               $data['users'] = intval(SiteStats::users());
-               $data['admins'] = intval(SiteStats::admins());
-               $data['jobs'] = intval(SiteStats::jobs());
-               $this->getResult()->addValue('query', $property, $data);
+       protected function appendStatistics( $property ) {
+               global $wgDisableCounters;
+               $data = array();
+               $data['pages'] = intval( SiteStats::pages() );
+               $data['articles'] = intval( SiteStats::articles() );
+               if ( !$wgDisableCounters ) {
+                       $data['views'] = intval( SiteStats::views() );
+               }
+               $data['edits'] = intval( SiteStats::edits() );
+               $data['images'] = intval( SiteStats::images() );
+               $data['users'] = intval( SiteStats::users() );
+               $data['activeusers'] = intval( SiteStats::activeUsers() );
+               $data['admins'] = intval( SiteStats::numberingroup( 'sysop' ) );
+               $data['jobs'] = intval( SiteStats::jobs() );
+               return $this->getResult()->addValue( 'query', $property, $data );
        }
 
-       protected function appendUserGroups($property) {
-               global $wgGroupPermissions;
+       protected function appendUserGroups( $property, $numberInGroup ) {
+               global $wgGroupPermissions, $wgAddGroups, $wgRemoveGroups, $wgGroupsAddToSelf, $wgGroupsRemoveFromSelf;
+
+               $data = array();
+               $result = $this->getResult();
+               foreach ( $wgGroupPermissions as $group => $permissions ) {
+                       $arr = array(
+                               'name' => $group,
+                               'rights' => array_keys( $permissions, true ),
+                       );
+
+                       if ( $numberInGroup ) {
+                               global $wgAutopromote;
 
-               $data = array ();
-               foreach ($wgGroupPermissions as $group => $permissions) {
-                       $arr = array ('name' => $group, 'rights' => array_keys($permissions, true));
-                       $this->getResult()->setIndexedTagName($arr['rights'], 'permission');
+                               if ( $group == 'user' ) {
+                                       $arr['number'] = SiteStats::users();
+
+                               // '*' and autopromote groups have no size
+                               } elseif ( $group !== '*' && !isset( $wgAutopromote[$group] ) ) {
+                                       $arr['number'] = SiteStats::numberInGroup( $group );
+                               }
+                       }
+
+                       $groupArr = array(
+                               'add' => $wgAddGroups,
+                               'remove' => $wgRemoveGroups,
+                               'add-self' => $wgGroupsAddToSelf,
+                               'remove-self' => $wgGroupsRemoveFromSelf
+                       );
+
+                       foreach ( $groupArr as $type => $rights ) {
+                               if ( isset( $rights[$group] ) ) {
+                                       $arr[$type] = $rights[$group];
+                                       $result->setIndexedTagName( $arr[$type], 'group' );
+                               }
+                       }
+
+                       $result->setIndexedTagName( $arr['rights'], 'permission' );
                        $data[] = $arr;
                }
 
-               $this->getResult()->setIndexedTagName($data, 'group');
-               $this->getResult()->addValue('query', $property, $data);
+               $result->setIndexedTagName( $data, 'group' );
+               return $result->addValue( 'query', $property, $data );
        }
 
-       public function getAllowedParams() {
-               return array (
+       protected function appendFileExtensions( $property ) {
+               global $wgFileExtensions;
+
+               $data = array();
+               foreach ( $wgFileExtensions as $ext ) {
+                       $data[] = array( 'ext' => $ext );
+               }
+               $this->getResult()->setIndexedTagName( $data, 'fe' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       protected function appendExtensions( $property ) {
+               global $wgExtensionCredits;
+               $data = array();
+               foreach ( $wgExtensionCredits as $type => $extensions ) {
+                       foreach ( $extensions as $ext ) {
+                               $ret = array();
+                               $ret['type'] = $type;
+                               if ( isset( $ext['name'] ) ) {
+                                       $ret['name'] = $ext['name'];
+                               }
+                               if ( isset( $ext['description'] ) ) {
+                                       $ret['description'] = $ext['description'];
+                               }
+                               if ( isset( $ext['descriptionmsg'] ) ) {
+                                       // Can be a string or array( key, param1, param2, ... )
+                                       if ( is_array( $ext['descriptionmsg'] ) ) {
+                                               $ret['descriptionmsg'] = $ext['descriptionmsg'][0];
+                                               $ret['descriptionmsgparams'] = array_slice( $ext['descriptionmsg'], 1 );
+                                               $this->getResult()->setIndexedTagName( $ret['descriptionmsgparams'], 'param' );
+                                       } else {
+                                               $ret['descriptionmsg'] = $ext['descriptionmsg'];
+                                       }
+                               }
+                               if ( isset( $ext['author'] ) ) {
+                                       $ret['author'] = is_array( $ext['author'] ) ?
+                                               implode( ', ', $ext['author' ] ) : $ext['author'];
+                               }
+                               if ( isset( $ext['url'] ) ) {
+                                       $ret['url'] = $ext['url'];
+                               }
+                               if ( isset( $ext['version'] ) ) {
+                                               $ret['version'] = $ext['version'];
+                               } elseif ( isset( $ext['svn-revision'] ) &&
+                                       preg_match( '/\$(?:Rev|LastChangedRevision|Revision): *(\d+)/',
+                                               $ext['svn-revision'], $m ) )
+                               {
+                                               $ret['version'] = 'r' . $m[1];
+                               }
+                               $data[] = $ret;
+                       }
+               }
+
+               $this->getResult()->setIndexedTagName( $data, 'ext' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       protected function appendRightsInfo( $property ) {
+               global $wgRightsPage, $wgRightsUrl, $wgRightsText;
+               $title = Title::newFromText( $wgRightsPage );
+               $url = $title ? wfExpandUrl( $title->getFullURL() ) : $wgRightsUrl;
+               $text = $wgRightsText;
+               if ( !$text && $title ) {
+                       $text = $title->getPrefixedText();
+               }
+
+               $data = array(
+                       'url' => $url ? $url : '',
+                       'text' => $text ?  $text : ''
+               );
+
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       public function appendLanguages( $property ) {
+               $params = $this->extractRequestParams();
+               $langCode = isset( $params['inlanguagecode '] ) ? $params['inlanguagecode '] : '';
+
+               if( $langCode ) {
+                       $langNames = Language::getTranslatedLanguageNames( $langCode );
+               } else {
+                       $langNames = Language::getLanguageNames();
+               }
+
+               $data = array();
+
+               foreach ( $langNames as $code => $name ) {
+                       $lang = array( 'code' => $code );
+                       ApiResult::setContent( $lang, $name );
+                       $data[] = $lang;
+               }
+               $this->getResult()->setIndexedTagName( $data, 'lang' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       public function appendSkins( $property ) {
+               $data = array();
+               foreach ( Skin::getSkinNames() as $name => $displayName ) {
+                       $skin = array( 'code' => $name );
+                       ApiResult::setContent( $skin, $displayName );
+                       $data[] = $skin;
+               }
+               $this->getResult()->setIndexedTagName( $data, 'skin' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       public function appendExtensionTags( $property ) {
+               global $wgParser;
+               $wgParser->firstCallInit();
+               $tags = array_map( array( $this, 'formatParserTags'), $wgParser->getTags() );
+               $this->getResult()->setIndexedTagName( $tags, 't' );
+               return $this->getResult()->addValue( 'query', $property, $tags );
+       }
+
+       public function appendFunctionHooks( $property ) {
+               global $wgParser;
+               $wgParser->firstCallInit();
+               $hooks = $wgParser->getFunctionHooks();
+               $this->getResult()->setIndexedTagName( $hooks, 'h' );
+               return $this->getResult()->addValue( 'query', $property, $hooks );
+       }
+
+       private function formatParserTags( $item ) {
+               return "<{$item}>";
+       }
 
-                       'prop' => array (
-                               ApiBase :: PARAM_DFLT => 'general',
-                               ApiBase :: PARAM_ISMULTI => true,
-                               ApiBase :: PARAM_TYPE => array (
+       public function appendSubscribedHooks( $property ) {
+               global $wgHooks;
+               $myWgHooks = $wgHooks;
+               ksort( $myWgHooks );
+
+               $data = array();
+               foreach ( $myWgHooks as $hook => $hooks )  {
+                       $arr = array(
+                               'name' => $hook,
+                               'subscribers' => array_map( array( 'SpecialVersion', 'arrayToString' ), $hooks ),
+                       );
+
+                       $this->getResult()->setIndexedTagName( $arr['subscribers'], 's' );
+                       $data[] = $arr;
+               }
+
+               $this->getResult()->setIndexedTagName( $data, 'hook' );
+               return $this->getResult()->addValue( 'query', $property, $data );
+       }
+
+       public function getCacheMode( $params ) {
+               return 'public';
+       }
+
+       public function getAllowedParams() {
+               return array(
+                       'prop' => array(
+                               ApiBase::PARAM_DFLT => 'general',
+                               ApiBase::PARAM_ISMULTI => true,
+                               ApiBase::PARAM_TYPE => array(
                                        'general',
                                        'namespaces',
                                        'namespacealiases',
                                        'specialpagealiases',
+                                       'magicwords',
                                        'interwikimap',
                                        'dbrepllag',
                                        'statistics',
                                        'usergroups',
-                               )),
-
-                       'filteriw' => array (
-                               ApiBase :: PARAM_TYPE => array (
+                                       'extensions',
+                                       'fileextensions',
+                                       'rightsinfo',
+                                       'languages',
+                                       'skins',
+                                       'extensiontags',
+                                       'functionhooks',
+                                       'showhooks',
+                               )
+                       ),
+                       'filteriw' => array(
+                               ApiBase::PARAM_TYPE => array(
                                        'local',
                                        '!local',
-                               )),
-
+                               )
+                       ),
                        'showalldb' => false,
+                       'numberingroup' => false,
+                       'inlanguagecode ' => null,
                );
        }
 
        public function getParamDescription() {
-               return array (
-                       'prop' => array (
+               $p = $this->getModulePrefix();
+               return array(
+                       'prop' => array(
                                'Which sysinfo properties to get:',
-                               ' "general"      - Overall system information',
-                               ' "namespaces"   - List of registered namespaces (localized)',
-                               ' "namespacealiases" - List of registered namespace aliases',
-                               ' "specialpagealiases" - List of special page aliases',
-                               ' "statistics"   - Returns site statistics',
-                               ' "interwikimap" - Returns interwiki map (optionally filtered)',
-                               ' "dbrepllag"    - Returns database server with the highest replication lag',
-                               ' "usergroups"   - Returns user groups and the associated permissions',
+                               ' general               - Overall system information',
+                               ' namespaces            - List of registered namespaces and their canonical names',
+                               ' namespacealiases      - List of registered namespace aliases',
+                               ' specialpagealiases    - List of special page aliases',
+                               ' magicwords            - List of magic words and their aliases',
+                               ' statistics            - Returns site statistics',
+                               " interwikimap          - Returns interwiki map (optionally filtered, (optionally localised by using {$p}inlanguagecode))",
+                               ' dbrepllag             - Returns database server with the highest replication lag',
+                               ' usergroups            - Returns user groups and the associated permissions',
+                               ' extensions            - Returns extensions installed on the wiki',
+                               ' fileextensions        - Returns list of file extensions allowed to be uploaded',
+                               ' rightsinfo            - Returns wiki rights (license) information if available',
+                               " languages             - Returns a list of languages MediaWiki supports (optionally localised by using {$p}inlanguagecode)",
+                               ' skins                 - Returns a list of all enabled skins',
+                               ' extensiontags         - Returns a list of parser extension tags',
+                               ' functionhooks         - Returns a list of parser function hooks',
+                               ' showhooks             - Returns a list of all subscribed hooks (contents of $wgHooks)'
                        ),
                        'filteriw' =>  'Return only local or only nonlocal entries of the interwiki map',
                        'showalldb' => 'List all database servers, not just the one lagging the most',
+                       'numberingroup' => 'Lists the number of users in user groups',
+                       'inlanguagecode ' => 'Language code for localised language names (best effort, use CLDR extension)',
                );
        }
 
        public function getDescription() {
-               return 'Return general information about the site.';
+               return 'Return general information about the site';
+       }
+
+       public function getPossibleErrors() {
+               return array_merge( parent::getPossibleErrors(), array(
+                       array( 'code' => 'includeAllDenied', 'info' => 'Cannot view all servers info unless $wgShowHostnames is true' ),
+               ) );
        }
 
        protected function getExamples() {
                return array(
                        'api.php?action=query&meta=siteinfo&siprop=general|namespaces|namespacealiases|statistics',
                        'api.php?action=query&meta=siteinfo&siprop=interwikimap&sifilteriw=local',
-                       'api.php?action=query&meta=siteinfo&siprop=dbrepllag&sishowalldb',
-                       );
+                       'api.php?action=query&meta=siteinfo&siprop=dbrepllag&sishowalldb=',
+               );
+       }
+
+       public function getHelpUrls() {
+               return 'http://www.mediawiki.org/wiki/API:Meta#siteinfo_.2F_si';
        }
 
        public function getVersion() {