Escape $1 in message (was PHP syntax error)
[lhc/web/wiklou.git] / includes / api / ApiQueryInfo.php
index 7caed4f..a8cc0c6 100644 (file)
@@ -1,12 +1,11 @@
 <?php
 
-
 /*
  * Created on Sep 25, 2006
  *
  * API for MediaWiki 1.8+
  *
- * Copyright (C) 2006 Yuri Astrakhan <FirstnameLastname@gmail.com>
+ * Copyright (C) 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
 
 if (!defined('MEDIAWIKI')) {
        // Eclipse helper - will be ignored in production
-       require_once ("ApiQueryBase.php");
+       require_once ('ApiQueryBase.php');
 }
 
+/**
+ * A query module to show basic page information.
+ *
+ * @ingroup API
+ */
 class ApiQueryInfo extends ApiQueryBase {
 
-       public function __construct($main, $moduleName, $query, $data) {
-               parent :: __construct($main, $moduleName, $query, $data);
+       public function __construct($query, $moduleName) {
+               parent :: __construct($query, $moduleName, 'in');
+       }
+
+       public function requestExtraData($pageSet) {
+               $pageSet->requestField('page_restrictions');
+               $pageSet->requestField('page_is_redirect');
+               $pageSet->requestField('page_is_new');
+               $pageSet->requestField('page_counter');
+               $pageSet->requestField('page_touched');
+               $pageSet->requestField('page_latest');
+               $pageSet->requestField('page_len');
        }
 
-       public function Execute() {
+       protected function getTokenFunctions() {
+               // tokenname => function
+               // function prototype is func($pageid, $title)
+               // should return token or false
                
+               // Don't call the hooks twice
+               if(isset($this->tokenFunctions))
+                       return $this->tokenFunctions;
+
+               // If we're in JSON callback mode, no tokens can be obtained
+               if(!is_null($this->getMain()->getRequest()->getVal('callback')))
+                       return array();
+
+               $this->tokenFunctions = array(
+                       'edit' => array( 'ApiQueryInfo', 'getEditToken' ),
+                       'delete' => array( 'ApiQueryInfo', 'getDeleteToken' ),
+                       'protect' => array( 'ApiQueryInfo', 'getProtectToken' ),
+                       'move' => array( 'ApiQueryInfo', 'getMoveToken' ),
+                       'block' => array( 'ApiQueryInfo', 'getBlockToken' ),
+                       'unblock' => array( 'ApiQueryInfo', 'getUnblockToken' ),
+                       'email' => array( 'ApiQueryInfo', 'getEmailToken' ),
+               );
+               wfRunHooks('APIQueryInfoTokens', array(&$this->tokenFunctions));
+               return $this->tokenFunctions;
        }
 
-       protected function GetAllowedParams() {
-               return array (
-                       'param' => 'default',
-                       'enumparam' => array (
-                               GN_ENUM_DFLT => 'default',
-                               GN_ENUM_ISMULTI => false,
-                               GN_ENUM_TYPE => array (
-                                       'a',
-                                       'b'
+       public static function getEditToken($pageid, $title)
+       {
+               // We could check for $title->userCan('edit') here,
+               // but that's too expensive for this purpose
+               global $wgUser;
+               if(!$wgUser->isAllowed('edit'))
+                       return false;
+               
+               // The edit token is always the same, let's exploit that
+               static $cachedEditToken = null;
+               if(!is_null($cachedEditToken))
+                       return $cachedEditToken;
+
+               $cachedEditToken = $wgUser->editToken();
+               return $cachedEditToken;
+       }
+       
+       public static function getDeleteToken($pageid, $title)
+       {
+               global $wgUser;
+               if(!$wgUser->isAllowed('delete'))
+                       return false;                   
+
+               static $cachedDeleteToken = null;
+               if(!is_null($cachedDeleteToken))
+                       return $cachedDeleteToken;
+
+               $cachedDeleteToken = $wgUser->editToken();
+               return $cachedDeleteToken;
+       }
+
+       public static function getProtectToken($pageid, $title)
+       {
+               global $wgUser;
+               if(!$wgUser->isAllowed('protect'))
+                       return false;
+
+               static $cachedProtectToken = null;
+               if(!is_null($cachedProtectToken))
+                       return $cachedProtectToken;
+
+               $cachedProtectToken = $wgUser->editToken();
+               return $cachedProtectToken;
+       }
+
+       public static function getMoveToken($pageid, $title)
+       {
+               global $wgUser;
+               if(!$wgUser->isAllowed('move'))
+                       return false;
+
+               static $cachedMoveToken = null;
+               if(!is_null($cachedMoveToken))
+                       return $cachedMoveToken;
+
+               $cachedMoveToken = $wgUser->editToken();
+               return $cachedMoveToken;
+       }
+
+       public static function getBlockToken($pageid, $title)
+       {
+               global $wgUser;
+               if(!$wgUser->isAllowed('block'))
+                       return false;
+
+               static $cachedBlockToken = null;
+               if(!is_null($cachedBlockToken))
+                       return $cachedBlockToken;
+
+               $cachedBlockToken = $wgUser->editToken();
+               return $cachedBlockToken;
+       }
+
+       public static function getUnblockToken($pageid, $title)
+       {
+               // Currently, this is exactly the same as the block token
+               return self::getBlockToken($pageid, $title);
+       }
+
+       public static function getEmailToken($pageid, $title)
+       {
+               global $wgUser;
+               if(!$wgUser->canSendEmail() || $wgUser->isBlockedFromEmailUser())
+                       return false;
+
+               static $cachedEmailToken = null;
+               if(!is_null($cachedEmailToken))
+                       return $cachedEmailToken;
+
+               $cachedEmailToken = $wgUser->editToken();
+               return $cachedEmailToken;
+       }
+
+       public function execute() {
+
+               global $wgUser;
+
+               $params = $this->extractRequestParams();
+               $fld_protection = $fld_talkid = $fld_subjectid = false;
+               if(!is_null($params['prop'])) {
+                       $prop = array_flip($params['prop']);
+                       $fld_protection = isset($prop['protection']);
+                       $fld_talkid = isset($prop['talkid']);
+                       $fld_subjectid = isset($prop['subjectid']);
+               }
+
+               $pageSet = $this->getPageSet();
+               $titles = $pageSet->getGoodTitles();
+               $missing = $pageSet->getMissingTitles();
+               $result = $this->getResult();
+
+               $pageRestrictions = $pageSet->getCustomField('page_restrictions');
+               $pageIsRedir = $pageSet->getCustomField('page_is_redirect');
+               $pageIsNew = $pageSet->getCustomField('page_is_new');
+               $pageCounter = $pageSet->getCustomField('page_counter');
+               $pageTouched = $pageSet->getCustomField('page_touched');
+               $pageLatest = $pageSet->getCustomField('page_latest');
+               $pageLength = $pageSet->getCustomField('page_len');
+
+               $db = $this->getDB();
+               if ($fld_protection && !empty($titles)) {
+                       $this->addTables('page_restrictions');
+                       $this->addFields(array('pr_page', 'pr_type', 'pr_level', 'pr_expiry', 'pr_cascade'));
+                       $this->addWhereFld('pr_page', array_keys($titles));
+
+                       $res = $this->select(__METHOD__);
+                       while($row = $db->fetchObject($res)) {
+                               $a = array(
+                                       'type' => $row->pr_type,
+                                       'level' => $row->pr_level,
+                                       'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 )
+                               );
+                               if($row->pr_cascade)
+                                       $a['cascade'] = '';
+                               $protections[$row->pr_page][] = $a;
+                       }
+                       $db->freeResult($res);
+                       
+                       $imageIds = array();
+                       foreach ($titles as $id => $title)
+                               if ($title->getNamespace() == NS_IMAGE)
+                                       $imageIds[] = $id;
+                       // To avoid code duplication
+                       $cascadeTypes = array(
+                               array(
+                                       'prefix' => 'tl',
+                                       'table' => 'templatelinks',
+                                       'ns' => 'tl_namespace',
+                                       'title' => 'tl_title',
+                                       'ids' => array_diff(array_keys($titles), $imageIds)
+                               ),
+                               array(
+                                       'prefix' => 'il',
+                                       'table' => 'imagelinks',
+                                       'ns' => NS_IMAGE,
+                                       'title' => 'il_to',
+                                       'ids' => $imageIds
                                )
+                       );
+                       
+                       foreach ($cascadeTypes as $type)
+                       {
+                               if (count($type['ids']) != 0) {
+                                       $this->resetQueryParams();
+                                       $this->addTables(array('page_restrictions', $type['table']));
+                                       $this->addTables('page', 'page_source');
+                                       $this->addTables('page', 'page_target');
+                                       $this->addFields(array('pr_type', 'pr_level', 'pr_expiry', 
+                                                       'page_target.page_id AS page_target_id',
+                                                       'page_source.page_namespace AS page_source_namespace',
+                                                       'page_source.page_title AS page_source_title'));
+                                       $this->addWhere(array("{$type['prefix']}_from = pr_page", 
+                                                       'page_target.page_namespace = '.$type['ns'], 
+                                                       'page_target.page_title = '.$type['title'],
+                                                       'page_source.page_id = pr_page'
+                                       ));
+                                       $this->addWhereFld('pr_cascade', 1);
+                                       $this->addWhereFld('page_target.page_id', $type['ids']);
+                               
+                                       $res = $this->select(__METHOD__);
+                                       while($row = $db->fetchObject($res)) {
+                                               $source = Title::makeTitle($row->page_source_namespace, $row->page_source_title);
+                                               $a = array(
+                                                       'type' => $row->pr_type,
+                                                       'level' => $row->pr_level,
+                                                       'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
+                                                       'source' => $source->getPrefixedText()
+                                               );
+                                               $protections[$row->page_target_id][] = $a;
+                                       }
+                                       $db->freeResult($res);
+                               }
+                       }
+               }
+
+               // We don't need to check for pt stuff if there are no nonexistent titles
+               if($fld_protection && !empty($missing))
+               {
+                       $this->resetQueryParams();
+                       // Construct a custom WHERE clause that matches all titles in $missing
+                       $lb = new LinkBatch($missing);
+                       $this->addTables('protected_titles');
+                       $this->addFields(array('pt_title', 'pt_namespace', 'pt_create_perm', 'pt_expiry'));
+                       $this->addWhere($lb->constructSet('pt', $db));
+                       $res = $this->select(__METHOD__);
+                       $prottitles = array();
+                       while($row = $db->fetchObject($res)) {
+                               $prottitles[$row->pt_namespace][$row->pt_title][] = array(
+                                       'type' => 'create',
+                                       'level' => $row->pt_create_perm,
+                                       'expiry' => Block::decodeExpiry($row->pt_expiry, TS_ISO_8601)
+                               );
+                       }
+                       $db->freeResult($res);
+                       
+                       $images = array();
+                       $others = array();
+                       foreach ($missing as $title)
+                               if ($title->getNamespace() == NS_IMAGE)
+                                       $images[] = $title->getDbKey();
+                               else
+                                       $others[] = $title;                                     
+                       
+                       if (count($others) != 0) {
+                               $lb = new LinkBatch($others);
+                               $this->resetQueryParams();
+                               $this->addTables(array('page_restrictions', 'page', 'templatelinks'));
+                               $this->addFields(array('pr_type', 'pr_level', 'pr_expiry', 
+                                               'page_title', 'page_namespace',
+                                               'tl_title', 'tl_namespace'));
+                               $this->addWhere($lb->constructSet('tl', $db));
+                               $this->addWhere('pr_page = page_id');
+                               $this->addWhere('pr_page = tl_from');
+                               $this->addWhereFld('pr_cascade', 1);
+                               
+                               $res = $this->select(__METHOD__);
+                               while($row = $db->fetchObject($res)) {
+                                       $source = Title::makeTitle($row->page_namespace, $row->page_title);
+                                       $a = array(
+                                               'type' => $row->pr_type,
+                                               'level' => $row->pr_level,
+                                               'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
+                                               'source' => $source->getPrefixedText()
+                                       );
+                                       $prottitles[$row->tl_namespace][$row->tl_title][] = $a;
+                               }
+                               $db->freeResult($res);
+                       }
+                       
+                       if (count($images) != 0) {
+                               $this->resetQueryParams();
+                               $this->addTables(array('page_restrictions', 'page', 'imagelinks'));
+                               $this->addFields(array('pr_type', 'pr_level', 'pr_expiry', 
+                                               'page_title', 'page_namespace', 'il_to'));
+                               $this->addWhere('pr_page = page_id');
+                               $this->addWhere('pr_page = il_from');
+                               $this->addWhereFld('pr_cascade', 1);
+                               $this->addWhereFld('il_to', $images);
+                               
+                               $res = $this->select(__METHOD__);
+                               while($row = $db->fetchObject($res)) {
+                                       $source = Title::makeTitle($row->page_namespace, $row->page_title);
+                                       $a = array(
+                                               'type' => $row->pr_type,
+                                               'level' => $row->pr_level,
+                                               'expiry' => Block::decodeExpiry( $row->pr_expiry, TS_ISO_8601 ),
+                                               'source' => $source->getPrefixedText()
+                                       );
+                                       $prottitles[NS_IMAGE][$row->il_to][] = $a;
+                               }
+                               $db->freeResult($res);
+                       }
+               }
+
+               // Run the talkid/subjectid query
+               if($fld_talkid || $fld_subjectid)
+               {
+                       $talktitles = $subjecttitles =
+                               $talkids = $subjectids = array();
+                       $everything = array_merge($titles, $missing);
+                       foreach($everything as $t)
+                       {
+                               if(MWNamespace::isTalk($t->getNamespace()))
+                               {
+                                       if($fld_subjectid)
+                                               $subjecttitles[] = $t->getSubjectPage();
+                               }
+                               else if($fld_talkid)
+                                       $talktitles[] = $t->getTalkPage();
+                       }
+                       if(!empty($talktitles) || !empty($subjecttitles))
+                       {
+                               // Construct a custom WHERE clause that matches
+                               // all titles in $talktitles and $subjecttitles
+                               $lb = new LinkBatch(array_merge($talktitles, $subjecttitles));
+                               $this->resetQueryParams();
+                               $this->addTables('page');
+                               $this->addFields(array('page_title', 'page_namespace', 'page_id'));
+                               $this->addWhere($lb->constructSet('page', $db));
+                               $res = $this->select(__METHOD__);
+                               while($row = $db->fetchObject($res))
+                               {
+                                       if(MWNamespace::isTalk($row->page_namespace))
+                                               $talkids[MWNamespace::getSubject($row->page_namespace)][$row->page_title] = $row->page_id;
+                                       else
+                                               $subjectids[MWNamespace::getTalk($row->page_namespace)][$row->page_title] = $row->page_id;
+                               }
+                       }
+               }
+
+               foreach ( $titles as $pageid => $title ) {
+                       $pageInfo = array (
+                               'touched' => wfTimestamp(TS_ISO_8601, $pageTouched[$pageid]),
+                               'lastrevid' => intval($pageLatest[$pageid]),
+                               'counter' => intval($pageCounter[$pageid]),
+                               'length' => intval($pageLength[$pageid]),
+                       );
+
+                       if ($pageIsRedir[$pageid])
+                               $pageInfo['redirect'] = '';
+
+                       if ($pageIsNew[$pageid])
+                               $pageInfo['new'] = '';
+
+                       if (!is_null($params['token'])) {
+                               $tokenFunctions = $this->getTokenFunctions();
+                               foreach($params['token'] as $t)
+                               {
+                                       $val = call_user_func($tokenFunctions[$t], $pageid, $title);
+                                       if($val === false)
+                                               $this->setWarning("Action '$t' is not allowed for the current user");
+                                       else
+                                               $pageInfo[$t . 'token'] = $val;
+                               }
+                       }
+
+                       if($fld_protection) {
+                               $pageInfo['protection'] = array();
+                               if (isset($protections[$pageid])) {
+                                       $pageInfo['protection'] = $protections[$pageid];
+                                       $result->setIndexedTagName($pageInfo['protection'], 'pr');
+                               }
+                               # Also check old restrictions
+                               if( $pageRestrictions[$pageid] ) {
+                                       foreach( explode( ':', trim( $pageRestrictions[$pageid] ) ) as $restrict ) {
+                                               $temp = explode( '=', trim( $restrict ) );
+                                               if(count($temp) == 1) {
+                                                       // old old format should be treated as edit/move restriction
+                                                       $restriction = trim( $temp[0] );
+                                                       $pageInfo['protection'][] = array(
+                                                               'type' => 'edit',
+                                                               'level' => $restriction,
+                                                               'expiry' => 'infinity',
+                                                       );
+                                                       $pageInfo['protection'][] = array(
+                                                               'type' => 'move',
+                                                               'level' => $restriction,
+                                                               'expiry' => 'infinity',
+                                                       );
+                                               } else {
+                                                       $restriction = trim( $temp[1] );
+                                                       $pageInfo['protection'][] = array(
+                                                               'type' => $temp[0],
+                                                               'level' => $restriction,
+                                                               'expiry' => 'infinity',
+                                                       );
+                                               }
+                                       }
+                                       $result->setIndexedTagName($pageInfo['protection'], 'pr');
+                               }
+                       }
+                       if($fld_talkid && isset($talkids[$title->getNamespace()][$title->getDbKey()]))
+                               $pageInfo['talkid'] = $talkids[$title->getNamespace()][$title->getDbKey()];
+                       if($fld_subjectid && isset($subjectids[$title->getNamespace()][$title->getDbKey()]))
+                               $pageInfo['subjectid'] = $subjectids[$title->getNamespace()][$title->getDbKey()];
+
+                       $result->addValue(array (
+                               'query',
+                               'pages'
+                       ), $pageid, $pageInfo);
+               }
+
+               // Get edit/protect tokens and protection data for missing titles if requested
+               // Delete and move tokens are N/A for missing titles anyway
+               if(!is_null($params['token']) || $fld_protection || $fld_talkid || $fld_subjectid)
+               {
+                       $res = &$result->getData();
+                       foreach($missing as $pageid => $title) {
+                               if(!is_null($params['token'])) 
+                               {
+                                       $tokenFunctions = $this->getTokenFunctions();
+                                       foreach($params['token'] as $t)
+                                       {
+                                               $val = call_user_func($tokenFunctions[$t], $pageid, $title);
+                                               if($val !== false)
+                                                       $res['query']['pages'][$pageid][$t . 'token'] = $val;
+                                       }
+                               }
+                               if($fld_protection)
+                               {
+                                       // Apparently the XML formatting code doesn't like array(null)
+                                       // This is painful to fix, so we'll just work around it
+                                       if(isset($prottitles[$title->getNamespace()][$title->getDBkey()]))
+                                               $res['query']['pages'][$pageid]['protection'] = $prottitles[$title->getNamespace()][$title->getDBkey()];
+                                       else
+                                               $res['query']['pages'][$pageid]['protection'] = array();
+                                       $result->setIndexedTagName($res['query']['pages'][$pageid]['protection'], 'pr');
+                               }
+                               if($fld_talkid && isset($talkids[$title->getNamespace()][$title->getDbKey()]))
+                                       $res['query']['pages'][$pageid]['talkid'] = $talkids[$title->getNamespace()][$title->getDbKey()];
+                               if($fld_subjectid && isset($subjectids[$title->getNamespace()][$title->getDbKey()]))
+                                       $res['query']['pages'][$pageid]['subjectid'] = $subjectids[$title->getNamespace()][$title->getDbKey()];
+                       }
+               }
+       }
+
+       public function getAllowedParams() {
+               return array (
+                       'prop' => array (
+                               ApiBase :: PARAM_DFLT => NULL,
+                               ApiBase :: PARAM_ISMULTI => true,
+                               ApiBase :: PARAM_TYPE => array (
+                                       'protection',
+                                       'talkid',
+                                       'subjectid'
+                               )),
+                       'token' => array (
+                               ApiBase :: PARAM_DFLT => NULL,
+                               ApiBase :: PARAM_ISMULTI => true,
+                               ApiBase :: PARAM_TYPE => array_keys($this->getTokenFunctions())
                        )
                );
        }
 
-       protected function GetParamDescription() {
-               return array();
+       public function getParamDescription() {
+               return array (
+                       'prop' => array (
+                               'Which additional properties to get:',
+                               ' "protection"   - List the protection level of each page',
+                               ' "talkid"       - The page ID of the talk page for each non-talk page',
+                               ' "subjectid"     - The page ID of the parent page for each talk page'
+                       ),
+                       'token' => 'Request a token to perform a data-modifying action on a page',
+               );
        }
 
-       protected function GetDescription() {
-               return 'module a';
+
+       public function getDescription() {
+               return 'Get basic page information such as namespace, title, last touched date, ...';
        }
 
-       protected function GetExamples() {
+       protected function getExamples() {
                return array (
-                       'http://...'
+                       'api.php?action=query&prop=info&titles=Main%20Page',
+                       'api.php?action=query&prop=info&inprop=protection&titles=Main%20Page'
                );
        }
+
+       public function getVersion() {
+               return __CLASS__ . ': $Id$';
+       }
 }
-?>
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