b161823573
Add ApiFeedContributions module Somewhat duplicated against Special:Contributions?feed=atom Going to strip out that functionality
1066 lines
32 KiB
PHP
1066 lines
32 KiB
PHP
<?php
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/**
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*
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*
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* Created on Sep 4, 2006
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*
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* Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @defgroup API API
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*/
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if ( !defined( 'MEDIAWIKI' ) ) {
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// Eclipse helper - will be ignored in production
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require_once( 'ApiBase.php' );
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}
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/**
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* This is the main API class, used for both external and internal processing.
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* When executed, it will create the requested formatter object,
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* instantiate and execute an object associated with the needed action,
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* and use formatter to print results.
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* In case of an exception, an error message will be printed using the same formatter.
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*
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* To use API from another application, run it using FauxRequest object, in which
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* case any internal exceptions will not be handled but passed up to the caller.
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* After successful execution, use getResult() for the resulting data.
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*
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* @ingroup API
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*/
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class ApiMain extends ApiBase {
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/**
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* When no format parameter is given, this format will be used
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*/
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const API_DEFAULT_FORMAT = 'xmlfm';
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/**
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* List of available modules: action name => module class
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*/
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private static $Modules = array(
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'login' => 'ApiLogin',
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'logout' => 'ApiLogout',
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'query' => 'ApiQuery',
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'expandtemplates' => 'ApiExpandTemplates',
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'parse' => 'ApiParse',
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'opensearch' => 'ApiOpenSearch',
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'feedcontributions' => 'ApiFeedContributions',
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'feedwatchlist' => 'ApiFeedWatchlist',
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'help' => 'ApiHelp',
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'paraminfo' => 'ApiParamInfo',
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'rsd' => 'ApiRsd',
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'compare' => 'ApiComparePages',
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// Write modules
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'purge' => 'ApiPurge',
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'rollback' => 'ApiRollback',
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'delete' => 'ApiDelete',
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'undelete' => 'ApiUndelete',
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'protect' => 'ApiProtect',
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'block' => 'ApiBlock',
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'unblock' => 'ApiUnblock',
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'move' => 'ApiMove',
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'edit' => 'ApiEditPage',
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'upload' => 'ApiUpload',
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'filerevert' => 'ApiFileRevert',
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'emailuser' => 'ApiEmailUser',
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'watch' => 'ApiWatch',
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'patrol' => 'ApiPatrol',
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'import' => 'ApiImport',
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'userrights' => 'ApiUserrights',
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);
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/**
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* List of available formats: format name => format class
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*/
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private static $Formats = array(
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'json' => 'ApiFormatJson',
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'jsonfm' => 'ApiFormatJson',
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'php' => 'ApiFormatPhp',
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'phpfm' => 'ApiFormatPhp',
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'wddx' => 'ApiFormatWddx',
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'wddxfm' => 'ApiFormatWddx',
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'xml' => 'ApiFormatXml',
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'xmlfm' => 'ApiFormatXml',
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'yaml' => 'ApiFormatYaml',
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'yamlfm' => 'ApiFormatYaml',
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'rawfm' => 'ApiFormatJson',
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'txt' => 'ApiFormatTxt',
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'txtfm' => 'ApiFormatTxt',
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'dbg' => 'ApiFormatDbg',
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'dbgfm' => 'ApiFormatDbg',
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'dump' => 'ApiFormatDump',
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'dumpfm' => 'ApiFormatDump',
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);
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/**
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* List of user roles that are specifically relevant to the API.
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* array( 'right' => array ( 'msg' => 'Some message with a $1',
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* 'params' => array ( $someVarToSubst ) ),
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* );
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*/
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private static $mRights = array(
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'writeapi' => array(
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'msg' => 'Use of the write API',
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'params' => array()
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),
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'apihighlimits' => array(
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'msg' => 'Use higher limits in API queries (Slow queries: $1 results; Fast queries: $2 results). The limits for slow queries also apply to multivalue parameters.',
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'params' => array( ApiBase::LIMIT_SML2, ApiBase::LIMIT_BIG2 )
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)
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);
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/**
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* @var ApiFormatBase
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*/
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private $mPrinter;
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private $mModules, $mModuleNames, $mFormats, $mFormatNames;
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private $mResult, $mAction, $mShowVersions, $mEnableWrite, $mRequest;
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private $mInternalMode, $mSquidMaxage, $mModule;
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private $mCacheMode = 'private';
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private $mCacheControl = array();
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/**
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* Constructs an instance of ApiMain that utilizes the module and format specified by $request.
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*
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* @param $request WebRequest - if this is an instance of FauxRequest, errors are thrown and no printing occurs
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* @param $enableWrite bool should be set to true if the api may modify data
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*/
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public function __construct( $request, $enableWrite = false ) {
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$this->mInternalMode = ( $request instanceof FauxRequest );
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// Special handling for the main module: $parent === $this
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parent::__construct( $this, $this->mInternalMode ? 'main_int' : 'main' );
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if ( !$this->mInternalMode ) {
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// Impose module restrictions.
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// If the current user cannot read,
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// Remove all modules other than login
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global $wgUser;
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if ( $request->getVal( 'callback' ) !== null ) {
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// JSON callback allows cross-site reads.
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// For safety, strip user credentials.
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wfDebug( "API: stripping user credentials for JSON callback\n" );
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$wgUser = new User();
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}
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}
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global $wgAPIModules; // extension modules
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$this->mModules = $wgAPIModules + self::$Modules;
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$this->mModuleNames = array_keys( $this->mModules );
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$this->mFormats = self::$Formats;
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$this->mFormatNames = array_keys( $this->mFormats );
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$this->mResult = new ApiResult( $this );
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$this->mShowVersions = false;
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$this->mEnableWrite = $enableWrite;
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$this->mRequest = &$request;
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$this->mSquidMaxage = - 1; // flag for executeActionWithErrorHandling()
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$this->mCommit = false;
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}
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/**
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* Return true if the API was started by other PHP code using FauxRequest
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* @return bool
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*/
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public function isInternalMode() {
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return $this->mInternalMode;
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}
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/**
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* Return the request object that contains client's request
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* @return WebRequest
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*/
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public function getRequest() {
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return $this->mRequest;
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}
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/**
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* Get the ApiResult object associated with current request
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*
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* @return ApiResult
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*/
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public function getResult() {
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return $this->mResult;
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}
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/**
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* Get the API module object. Only works after executeAction()
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*
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* @return ApiBase
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*/
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public function getModule() {
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return $this->mModule;
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}
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/**
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* Get the result formatter object. Only works after setupExecuteAction()
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*
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* @return ApiFormatBase
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*/
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public function getPrinter() {
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return $this->mPrinter;
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}
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/**
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* Set how long the response should be cached.
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*
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* @param $maxage
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*/
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public function setCacheMaxAge( $maxage ) {
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$this->setCacheControl( array(
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'max-age' => $maxage,
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's-maxage' => $maxage
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) );
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}
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/**
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* Set the type of caching headers which will be sent.
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*
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* @param $mode String One of:
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* - 'public': Cache this object in public caches, if the maxage or smaxage
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* parameter is set, or if setCacheMaxAge() was called. If a maximum age is
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* not provided by any of these means, the object will be private.
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* - 'private': Cache this object only in private client-side caches.
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* - 'anon-public-user-private': Make this object cacheable for logged-out
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* users, but private for logged-in users. IMPORTANT: If this is set, it must be
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* set consistently for a given URL, it cannot be set differently depending on
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* things like the contents of the database, or whether the user is logged in.
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*
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* If the wiki does not allow anonymous users to read it, the mode set here
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* will be ignored, and private caching headers will always be sent. In other words,
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* the "public" mode is equivalent to saying that the data sent is as public as a page
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* view.
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*
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* For user-dependent data, the private mode should generally be used. The
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* anon-public-user-private mode should only be used where there is a particularly
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* good performance reason for caching the anonymous response, but where the
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* response to logged-in users may differ, or may contain private data.
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*
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* If this function is never called, then the default will be the private mode.
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*/
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public function setCacheMode( $mode ) {
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if ( !in_array( $mode, array( 'private', 'public', 'anon-public-user-private' ) ) ) {
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wfDebug( __METHOD__ . ": unrecognised cache mode \"$mode\"\n" );
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// Ignore for forwards-compatibility
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return;
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}
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if ( !in_array( 'read', User::getGroupPermissions( array( '*' ) ), true ) ) {
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// Private wiki, only private headers
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if ( $mode !== 'private' ) {
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wfDebug( __METHOD__ . ": ignoring request for $mode cache mode, private wiki\n" );
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return;
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}
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}
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wfDebug( __METHOD__ . ": setting cache mode $mode\n" );
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$this->mCacheMode = $mode;
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}
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/**
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* @deprecated since 1.17 Private caching is now the default, so there is usually no
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* need to call this function. If there is a need, you can use
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* $this->setCacheMode('private')
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*/
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public function setCachePrivate() {
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$this->setCacheMode( 'private' );
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}
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/**
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* Set directives (key/value pairs) for the Cache-Control header.
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* Boolean values will be formatted as such, by including or omitting
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* without an equals sign.
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*
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* Cache control values set here will only be used if the cache mode is not
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* private, see setCacheMode().
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*
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* @param $directives array
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*/
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public function setCacheControl( $directives ) {
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$this->mCacheControl = $directives + $this->mCacheControl;
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}
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/**
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* Make sure Vary: Cookie and friends are set. Use this when the output of a request
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* may be cached for anons but may not be cached for logged-in users.
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*
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* WARNING: This function must be called CONSISTENTLY for a given URL. This means that a
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* given URL must either always or never call this function; if it sometimes does and
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* sometimes doesn't, stuff will break.
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*
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* @deprecated since 1.17 Use setCacheMode( 'anon-public-user-private' )
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*/
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public function setVaryCookie() {
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$this->setCacheMode( 'anon-public-user-private' );
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}
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/**
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* Create an instance of an output formatter by its name
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*
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* @param $format string
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*
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* @return ApiFormatBase
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*/
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public function createPrinterByName( $format ) {
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if ( !isset( $this->mFormats[$format] ) ) {
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$this->dieUsage( "Unrecognized format: {$format}", 'unknown_format' );
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}
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return new $this->mFormats[$format] ( $this, $format );
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}
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/**
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* Execute api request. Any errors will be handled if the API was called by the remote client.
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*/
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public function execute() {
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$this->profileIn();
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if ( $this->mInternalMode ) {
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$this->executeAction();
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} else {
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$this->executeActionWithErrorHandling();
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}
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$this->profileOut();
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}
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/**
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* Execute an action, and in case of an error, erase whatever partial results
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* have been accumulated, and replace it with an error message and a help screen.
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*/
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protected function executeActionWithErrorHandling() {
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// In case an error occurs during data output,
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// clear the output buffer and print just the error information
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ob_start();
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try {
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$this->executeAction();
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} catch ( Exception $e ) {
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// Log it
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if ( $e instanceof MWException ) {
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wfDebugLog( 'exception', $e->getLogMessage() );
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}
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// Handle any kind of exception by outputing properly formatted error message.
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// If this fails, an unhandled exception should be thrown so that global error
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// handler will process and log it.
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$errCode = $this->substituteResultWithError( $e );
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// Error results should not be cached
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$this->setCacheMode( 'private' );
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$response = $this->getRequest()->response();
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$headerStr = 'MediaWiki-API-Error: ' . $errCode;
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if ( $e->getCode() === 0 ) {
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$response->header( $headerStr );
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} else {
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$response->header( $headerStr, true, $e->getCode() );
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}
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// Reset and print just the error message
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ob_clean();
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// If the error occured during printing, do a printer->profileOut()
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$this->mPrinter->safeProfileOut();
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$this->printResult( true );
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}
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// Send cache headers after any code which might generate an error, to
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// avoid sending public cache headers for errors.
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$this->sendCacheHeaders();
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if ( $this->mPrinter->getIsHtml() && !$this->mPrinter->isDisabled() ) {
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echo wfReportTime();
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}
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ob_end_flush();
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}
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protected function sendCacheHeaders() {
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$response = $this->getRequest()->response();
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if ( $this->mCacheMode == 'private' ) {
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$response->header( 'Cache-Control: private' );
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return;
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}
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if ( $this->mCacheMode == 'anon-public-user-private' ) {
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global $wgUseXVO, $wgOut;
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$response->header( 'Vary: Accept-Encoding, Cookie' );
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if ( $wgUseXVO ) {
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$response->header( $wgOut->getXVO() );
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if ( $wgOut->haveCacheVaryCookies() ) {
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// Logged in, mark this request private
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$response->header( 'Cache-Control: private' );
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return;
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}
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// Logged out, send normal public headers below
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} elseif ( session_id() != '' ) {
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// Logged in or otherwise has session (e.g. anonymous users who have edited)
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// Mark request private
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$response->header( 'Cache-Control: private' );
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return;
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} // else no XVO and anonymous, send public headers below
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}
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// If nobody called setCacheMaxAge(), use the (s)maxage parameters
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if ( !isset( $this->mCacheControl['s-maxage'] ) ) {
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$this->mCacheControl['s-maxage'] = $this->getParameter( 'smaxage' );
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}
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if ( !isset( $this->mCacheControl['max-age'] ) ) {
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$this->mCacheControl['max-age'] = $this->getParameter( 'maxage' );
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}
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if ( !$this->mCacheControl['s-maxage'] && !$this->mCacheControl['max-age'] ) {
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// Public cache not requested
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// Sending a Vary header in this case is harmless, and protects us
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// against conditional calls of setCacheMaxAge().
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$response->header( 'Cache-Control: private' );
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return;
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}
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$this->mCacheControl['public'] = true;
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// Send an Expires header
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$maxAge = min( $this->mCacheControl['s-maxage'], $this->mCacheControl['max-age'] );
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$expiryUnixTime = ( $maxAge == 0 ? 1 : time() + $maxAge );
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$response->header( 'Expires: ' . wfTimestamp( TS_RFC2822, $expiryUnixTime ) );
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// Construct the Cache-Control header
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$ccHeader = '';
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$separator = '';
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foreach ( $this->mCacheControl as $name => $value ) {
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if ( is_bool( $value ) ) {
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if ( $value ) {
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$ccHeader .= $separator . $name;
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$separator = ', ';
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}
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} else {
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$ccHeader .= $separator . "$name=$value";
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$separator = ', ';
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}
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}
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$response->header( "Cache-Control: $ccHeader" );
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}
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/**
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* Replace the result data with the information about an exception.
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* Returns the error code
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* @param $e Exception
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* @return string
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*/
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protected function substituteResultWithError( $e ) {
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// Printer may not be initialized if the extractRequestParams() fails for the main module
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if ( !isset ( $this->mPrinter ) ) {
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// The printer has not been created yet. Try to manually get formatter value.
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$value = $this->getRequest()->getVal( 'format', self::API_DEFAULT_FORMAT );
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if ( !in_array( $value, $this->mFormatNames ) ) {
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$value = self::API_DEFAULT_FORMAT;
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}
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$this->mPrinter = $this->createPrinterByName( $value );
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if ( $this->mPrinter->getNeedsRawData() ) {
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$this->getResult()->setRawMode();
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}
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}
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if ( $e instanceof UsageException ) {
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// User entered incorrect parameters - print usage screen
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$errMessage = $e->getMessageArray();
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// Only print the help message when this is for the developer, not runtime
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if ( $this->mPrinter->getWantsHelp() || $this->mAction == 'help' ) {
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ApiResult::setContent( $errMessage, $this->makeHelpMsg() );
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}
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} else {
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global $wgShowSQLErrors, $wgShowExceptionDetails;
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// Something is seriously wrong
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if ( ( $e instanceof DBQueryError ) && !$wgShowSQLErrors ) {
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$info = 'Database query error';
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} else {
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$info = "Exception Caught: {$e->getMessage()}";
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}
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$errMessage = array(
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'code' => 'internal_api_error_' . get_class( $e ),
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'info' => $info,
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);
|
|
ApiResult::setContent( $errMessage, $wgShowExceptionDetails ? "\n\n{$e->getTraceAsString()}\n\n" : '' );
|
|
}
|
|
|
|
$this->getResult()->reset();
|
|
$this->getResult()->disableSizeCheck();
|
|
// Re-add the id
|
|
$requestid = $this->getParameter( 'requestid' );
|
|
if ( !is_null( $requestid ) ) {
|
|
$this->getResult()->addValue( null, 'requestid', $requestid );
|
|
}
|
|
// servedby is especially useful when debugging errors
|
|
$this->getResult()->addValue( null, 'servedby', wfHostName() );
|
|
$this->getResult()->addValue( null, 'error', $errMessage );
|
|
|
|
return $errMessage['code'];
|
|
}
|
|
|
|
/**
|
|
* Set up for the execution.
|
|
* @return array
|
|
*/
|
|
protected function setupExecuteAction() {
|
|
// First add the id to the top element
|
|
$requestid = $this->getParameter( 'requestid' );
|
|
if ( !is_null( $requestid ) ) {
|
|
$this->getResult()->addValue( null, 'requestid', $requestid );
|
|
}
|
|
$servedby = $this->getParameter( 'servedby' );
|
|
if ( $servedby ) {
|
|
$this->getResult()->addValue( null, 'servedby', wfHostName() );
|
|
}
|
|
|
|
$params = $this->extractRequestParams();
|
|
|
|
$this->mShowVersions = $params['version'];
|
|
$this->mAction = $params['action'];
|
|
|
|
if ( !is_string( $this->mAction ) ) {
|
|
$this->dieUsage( 'The API requires a valid action parameter', 'unknown_action' );
|
|
}
|
|
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* Set up the module for response
|
|
* @return ApiBase The module that will handle this action
|
|
*/
|
|
protected function setupModule() {
|
|
// Instantiate the module requested by the user
|
|
$module = new $this->mModules[$this->mAction] ( $this, $this->mAction );
|
|
$this->mModule = $module;
|
|
|
|
$moduleParams = $module->extractRequestParams();
|
|
|
|
// Die if token required, but not provided (unless there is a gettoken parameter)
|
|
$salt = $module->getTokenSalt();
|
|
if ( $salt !== false && !isset( $moduleParams['gettoken'] ) ) {
|
|
if ( !isset( $moduleParams['token'] ) ) {
|
|
$this->dieUsageMsg( array( 'missingparam', 'token' ) );
|
|
} else {
|
|
global $wgUser;
|
|
if ( !$wgUser->matchEditToken( $moduleParams['token'], $salt, $this->getRequest() ) ) {
|
|
$this->dieUsageMsg( 'sessionfailure' );
|
|
}
|
|
}
|
|
}
|
|
return $module;
|
|
}
|
|
|
|
/**
|
|
* Check the max lag if necessary
|
|
* @param $module ApiBase object: Api module being used
|
|
* @param $params Array an array containing the request parameters.
|
|
* @return boolean True on success, false should exit immediately
|
|
*/
|
|
protected function checkMaxLag( $module, $params ) {
|
|
if ( $module->shouldCheckMaxlag() && isset( $params['maxlag'] ) ) {
|
|
// Check for maxlag
|
|
global $wgShowHostnames;
|
|
$maxLag = $params['maxlag'];
|
|
list( $host, $lag ) = wfGetLB()->getMaxLag();
|
|
if ( $lag > $maxLag ) {
|
|
$response = $this->getRequest()->response();
|
|
|
|
$response->header( 'Retry-After: ' . max( intval( $maxLag ), 5 ) );
|
|
$response->header( 'X-Database-Lag: ' . intval( $lag ) );
|
|
|
|
if ( $wgShowHostnames ) {
|
|
$this->dieUsage( "Waiting for $host: $lag seconds lagged", 'maxlag' );
|
|
} else {
|
|
$this->dieUsage( "Waiting for a database server: $lag seconds lagged", 'maxlag' );
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check for sufficient permissions to execute
|
|
* @param $module ApiBase An Api module
|
|
*/
|
|
protected function checkExecutePermissions( $module ) {
|
|
global $wgUser;
|
|
if ( $module->isReadMode() && !in_array( 'read', User::getGroupPermissions( array( '*' ) ), true ) &&
|
|
!$wgUser->isAllowed( 'read' ) )
|
|
{
|
|
$this->dieUsageMsg( 'readrequired' );
|
|
}
|
|
if ( $module->isWriteMode() ) {
|
|
if ( !$this->mEnableWrite ) {
|
|
$this->dieUsageMsg( 'writedisabled' );
|
|
}
|
|
if ( !$wgUser->isAllowed( 'writeapi' ) ) {
|
|
$this->dieUsageMsg( 'writerequired' );
|
|
}
|
|
if ( wfReadOnly() ) {
|
|
$this->dieReadOnly();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check POST for external response and setup result printer
|
|
* @param $module ApiBase An Api module
|
|
* @param $params Array an array with the request parameters
|
|
*/
|
|
protected function setupExternalResponse( $module, $params ) {
|
|
// Ignore mustBePosted() for internal calls
|
|
if ( $module->mustBePosted() && !$this->mRequest->wasPosted() ) {
|
|
$this->dieUsageMsg( array( 'mustbeposted', $this->mAction ) );
|
|
}
|
|
|
|
// See if custom printer is used
|
|
$this->mPrinter = $module->getCustomPrinter();
|
|
if ( is_null( $this->mPrinter ) ) {
|
|
// Create an appropriate printer
|
|
$this->mPrinter = $this->createPrinterByName( $params['format'] );
|
|
}
|
|
|
|
if ( $this->mPrinter->getNeedsRawData() ) {
|
|
$this->getResult()->setRawMode();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Execute the actual module, without any error handling
|
|
*/
|
|
protected function executeAction() {
|
|
$params = $this->setupExecuteAction();
|
|
$module = $this->setupModule();
|
|
|
|
$this->checkExecutePermissions( $module );
|
|
|
|
if ( !$this->checkMaxLag( $module, $params ) ) {
|
|
return;
|
|
}
|
|
|
|
if ( !$this->mInternalMode ) {
|
|
$this->setupExternalResponse( $module, $params );
|
|
}
|
|
|
|
// Execute
|
|
$module->profileIn();
|
|
$module->execute();
|
|
wfRunHooks( 'APIAfterExecute', array( &$module ) );
|
|
$module->profileOut();
|
|
|
|
if ( !$this->mInternalMode ) {
|
|
// Print result data
|
|
$this->printResult( false );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Print results using the current printer
|
|
*
|
|
* @param $isError bool
|
|
*/
|
|
protected function printResult( $isError ) {
|
|
$this->getResult()->cleanUpUTF8();
|
|
$printer = $this->mPrinter;
|
|
$printer->profileIn();
|
|
|
|
/**
|
|
* If the help message is requested in the default (xmlfm) format,
|
|
* tell the printer not to escape ampersands so that our links do
|
|
* not break.
|
|
*/
|
|
$printer->setUnescapeAmps( ( $this->mAction == 'help' || $isError )
|
|
&& $printer->getFormat() == 'XML' && $printer->getIsHtml() );
|
|
|
|
$printer->initPrinter( $isError );
|
|
|
|
$printer->execute();
|
|
$printer->closePrinter();
|
|
$printer->profileOut();
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isReadMode() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* See ApiBase for description.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getAllowedParams() {
|
|
return array(
|
|
'format' => array(
|
|
ApiBase::PARAM_DFLT => ApiMain::API_DEFAULT_FORMAT,
|
|
ApiBase::PARAM_TYPE => $this->mFormatNames
|
|
),
|
|
'action' => array(
|
|
ApiBase::PARAM_DFLT => 'help',
|
|
ApiBase::PARAM_TYPE => $this->mModuleNames
|
|
),
|
|
'version' => false,
|
|
'maxlag' => array(
|
|
ApiBase::PARAM_TYPE => 'integer'
|
|
),
|
|
'smaxage' => array(
|
|
ApiBase::PARAM_TYPE => 'integer',
|
|
ApiBase::PARAM_DFLT => 0
|
|
),
|
|
'maxage' => array(
|
|
ApiBase::PARAM_TYPE => 'integer',
|
|
ApiBase::PARAM_DFLT => 0
|
|
),
|
|
'requestid' => null,
|
|
'servedby' => false,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* See ApiBase for description.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getParamDescription() {
|
|
return array(
|
|
'format' => 'The format of the output',
|
|
'action' => 'What action you would like to perform. See below for module help',
|
|
'version' => 'When showing help, include version for each module',
|
|
'maxlag' => array(
|
|
'Maximum lag can be used when MediaWiki is installed on a database replicated cluster.',
|
|
'To save actions causing any more site replication lag, this parameter can make the client',
|
|
'wait until the replication lag is less than the specified value.',
|
|
'In case of a replag error, a HTTP 503 error is returned, with the message like',
|
|
'"Waiting for $host: $lag seconds lagged\n".',
|
|
'See http://www.mediawiki.org/wiki/Manual:Maxlag_parameter for more information',
|
|
),
|
|
'smaxage' => 'Set the s-maxage header to this many seconds. Errors are never cached',
|
|
'maxage' => 'Set the max-age header to this many seconds. Errors are never cached',
|
|
'requestid' => 'Request ID to distinguish requests. This will just be output back to you',
|
|
'servedby' => 'Include the hostname that served the request in the results. Unconditionally shown on error',
|
|
);
|
|
}
|
|
|
|
/**
|
|
* See ApiBase for description.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getDescription() {
|
|
return array(
|
|
'',
|
|
'',
|
|
'**********************************************************************************************************',
|
|
'** **',
|
|
'** This is an auto-generated MediaWiki API documentation page **',
|
|
'** **',
|
|
'** Documentation and Examples: **',
|
|
'** http://www.mediawiki.org/wiki/API **',
|
|
'** **',
|
|
'**********************************************************************************************************',
|
|
'',
|
|
'Status: All features shown on this page should be working, but the API',
|
|
' is still in active development, and may change at any time.',
|
|
' Make sure to monitor our mailing list for any updates',
|
|
'',
|
|
'Erroneous requests: When erroneous requests are sent to the API, a HTTP header will be sent',
|
|
' with the key "MediaWiki-API-Error" and then both the value of the',
|
|
' header and the error code sent back will be set to the same value',
|
|
'',
|
|
' In the case of an invalid action being passed, these will have a value',
|
|
' of "unknown_action"',
|
|
'',
|
|
'Documentation: http://www.mediawiki.org/wiki/API',
|
|
'Mailing list: http://lists.wikimedia.org/mailman/listinfo/mediawiki-api',
|
|
'Api Announcements: http://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce',
|
|
'Bugs & Requests: http://bugzilla.wikimedia.org/buglist.cgi?component=API&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&order=bugs.delta_ts',
|
|
'',
|
|
'',
|
|
'',
|
|
'',
|
|
'',
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function getPossibleErrors() {
|
|
return array_merge( parent::getPossibleErrors(), array(
|
|
array( 'readonlytext' ),
|
|
array( 'code' => 'unknown_format', 'info' => 'Unrecognized format: format' ),
|
|
array( 'code' => 'unknown_action', 'info' => 'The API requires a valid action parameter' ),
|
|
array( 'code' => 'maxlag', 'info' => 'Waiting for host: x seconds lagged' ),
|
|
array( 'code' => 'maxlag', 'info' => 'Waiting for a database server: x seconds lagged' ),
|
|
) );
|
|
}
|
|
|
|
/**
|
|
* Returns an array of strings with credits for the API
|
|
* @return array
|
|
*/
|
|
protected function getCredits() {
|
|
return array(
|
|
'API developers:',
|
|
' Roan Kattouw <Firstname>.<Lastname>@gmail.com (lead developer Sep 2007-present)',
|
|
' Victor Vasiliev - vasilvv at gee mail dot com',
|
|
' Bryan Tong Minh - bryan . tongminh @ gmail . com',
|
|
' Sam Reed - sam @ reedyboy . net',
|
|
' Yuri Astrakhan <Firstname><Lastname>@gmail.com (creator, lead developer Sep 2006-Sep 2007)',
|
|
'',
|
|
'Please send your comments, suggestions and questions to mediawiki-api@lists.wikimedia.org',
|
|
'or file a bug report at http://bugzilla.wikimedia.org/'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Sets whether the pretty-printer should format *bold* and $italics$
|
|
*
|
|
* @param $help bool
|
|
*/
|
|
public function setHelp( $help = true ) {
|
|
$this->mPrinter->setHelp( $help );
|
|
}
|
|
|
|
/**
|
|
* Override the parent to generate help messages for all available modules.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function makeHelpMsg() {
|
|
global $wgMemc, $wgAPICacheHelpTimeout;
|
|
$this->setHelp();
|
|
// Get help text from cache if present
|
|
$key = wfMemcKey( 'apihelp', $this->getModuleName(),
|
|
SpecialVersion::getVersion( 'nodb' ) .
|
|
$this->getShowVersions() );
|
|
if ( $wgAPICacheHelpTimeout > 0 ) {
|
|
$cached = $wgMemc->get( $key );
|
|
if ( $cached ) {
|
|
return $cached;
|
|
}
|
|
}
|
|
$retval = $this->reallyMakeHelpMsg();
|
|
if ( $wgAPICacheHelpTimeout > 0 ) {
|
|
$wgMemc->set( $key, $retval, $wgAPICacheHelpTimeout );
|
|
}
|
|
return $retval;
|
|
}
|
|
|
|
/**
|
|
* @return mixed|string
|
|
*/
|
|
public function reallyMakeHelpMsg() {
|
|
$this->setHelp();
|
|
|
|
// Use parent to make default message for the main module
|
|
$msg = parent::makeHelpMsg();
|
|
|
|
$astriks = str_repeat( '*** ', 14 );
|
|
$msg .= "\n\n$astriks Modules $astriks\n\n";
|
|
foreach ( array_keys( $this->mModules ) as $moduleName ) {
|
|
$module = new $this->mModules[$moduleName] ( $this, $moduleName );
|
|
$msg .= self::makeHelpMsgHeader( $module, 'action' );
|
|
$msg2 = $module->makeHelpMsg();
|
|
if ( $msg2 !== false ) {
|
|
$msg .= $msg2;
|
|
}
|
|
$msg .= "\n";
|
|
}
|
|
|
|
$msg .= "\n$astriks Permissions $astriks\n\n";
|
|
foreach ( self::$mRights as $right => $rightMsg ) {
|
|
$groups = User::getGroupsWithPermission( $right );
|
|
$msg .= "* " . $right . " *\n " . wfMsgReplaceArgs( $rightMsg[ 'msg' ], $rightMsg[ 'params' ] ) .
|
|
"\nGranted to:\n " . str_replace( '*', 'all', implode( ', ', $groups ) ) . "\n\n";
|
|
|
|
}
|
|
|
|
$msg .= "\n$astriks Formats $astriks\n\n";
|
|
foreach ( array_keys( $this->mFormats ) as $formatName ) {
|
|
$module = $this->createPrinterByName( $formatName );
|
|
$msg .= self::makeHelpMsgHeader( $module, 'format' );
|
|
$msg2 = $module->makeHelpMsg();
|
|
if ( $msg2 !== false ) {
|
|
$msg .= $msg2;
|
|
}
|
|
$msg .= "\n";
|
|
}
|
|
|
|
$msg .= "\n*** Credits: ***\n " . implode( "\n ", $this->getCredits() ) . "\n";
|
|
|
|
return $msg;
|
|
}
|
|
|
|
/**
|
|
* @param $module ApiBase
|
|
* @param $paramName String What type of request is this? e.g. action, query, list, prop, meta, format
|
|
* @return string
|
|
*/
|
|
public static function makeHelpMsgHeader( $module, $paramName ) {
|
|
$modulePrefix = $module->getModulePrefix();
|
|
if ( strval( $modulePrefix ) !== '' ) {
|
|
$modulePrefix = "($modulePrefix) ";
|
|
}
|
|
|
|
return "* $paramName={$module->getModuleName()} $modulePrefix*";
|
|
}
|
|
|
|
private $mCanApiHighLimits = null;
|
|
|
|
/**
|
|
* Check whether the current user is allowed to use high limits
|
|
* @return bool
|
|
*/
|
|
public function canApiHighLimits() {
|
|
if ( !isset( $this->mCanApiHighLimits ) ) {
|
|
global $wgUser;
|
|
$this->mCanApiHighLimits = $wgUser->isAllowed( 'apihighlimits' );
|
|
}
|
|
|
|
return $this->mCanApiHighLimits;
|
|
}
|
|
|
|
/**
|
|
* Check whether the user wants us to show version information in the API help
|
|
* @return bool
|
|
*/
|
|
public function getShowVersions() {
|
|
return $this->mShowVersions;
|
|
}
|
|
|
|
/**
|
|
* Returns the version information of this file, plus it includes
|
|
* the versions for all files that are not callable proper API modules
|
|
*
|
|
* @return array
|
|
*/
|
|
public function getVersion() {
|
|
$vers = array();
|
|
$vers[] = 'MediaWiki: ' . SpecialVersion::getVersion() . "\n http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/";
|
|
$vers[] = __CLASS__ . ': $Id$';
|
|
$vers[] = ApiBase::getBaseVersion();
|
|
$vers[] = ApiFormatBase::getBaseVersion();
|
|
$vers[] = ApiQueryBase::getBaseVersion();
|
|
return $vers;
|
|
}
|
|
|
|
/**
|
|
* Add or overwrite a module in this ApiMain instance. Intended for use by extending
|
|
* classes who wish to add their own modules to their lexicon or override the
|
|
* behavior of inherent ones.
|
|
*
|
|
* @param $mdlName String The identifier for this module.
|
|
* @param $mdlClass String The class where this module is implemented.
|
|
*/
|
|
protected function addModule( $mdlName, $mdlClass ) {
|
|
$this->mModules[$mdlName] = $mdlClass;
|
|
}
|
|
|
|
/**
|
|
* Add or overwrite an output format for this ApiMain. Intended for use by extending
|
|
* classes who wish to add to or modify current formatters.
|
|
*
|
|
* @param $fmtName string The identifier for this format.
|
|
* @param $fmtClass ApiFormatBase The class implementing this format.
|
|
*/
|
|
protected function addFormat( $fmtName, $fmtClass ) {
|
|
$this->mFormats[$fmtName] = $fmtClass;
|
|
}
|
|
|
|
/**
|
|
* Get the array mapping module names to class names
|
|
* @return array
|
|
*/
|
|
function getModules() {
|
|
return $this->mModules;
|
|
}
|
|
|
|
/**
|
|
* Returns the list of supported formats in form ( 'format' => 'ClassName' )
|
|
*
|
|
* @since 1.18
|
|
* @return array
|
|
*/
|
|
public function getFormats() {
|
|
return $this->mFormats;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This exception will be thrown when dieUsage is called to stop module execution.
|
|
* The exception handling code will print a help screen explaining how this API may be used.
|
|
*
|
|
* @ingroup API
|
|
*/
|
|
class UsageException extends Exception {
|
|
|
|
private $mCodestr;
|
|
private $mExtraData;
|
|
|
|
public function __construct( $message, $codestr, $code = 0, $extradata = null ) {
|
|
parent::__construct( $message, $code );
|
|
$this->mCodestr = $codestr;
|
|
$this->mExtraData = $extradata;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function getCodeString() {
|
|
return $this->mCodestr;
|
|
}
|
|
|
|
/**
|
|
* @return array
|
|
*/
|
|
public function getMessageArray() {
|
|
$result = array(
|
|
'code' => $this->mCodestr,
|
|
'info' => $this->getMessage()
|
|
);
|
|
if ( is_array( $this->mExtraData ) ) {
|
|
$result = array_merge( $result, $this->mExtraData );
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
public function __toString() {
|
|
return "{$this->getCodeString()}: {$this->getMessage()}";
|
|
}
|
|
}
|