includes/api/ApiParamInfo.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Dec 01, 2007
   6  *
   7  * Copyright © 2008 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * @ingroup API
  29  */
  30 class ApiParamInfo extends ApiBase {
  31
  32         private $helpFormat;
  33         private $context;
  34
  35         public function __construct( ApiMain $main, $action ) {
  36                 parent::__construct( $main, $action );
  37         }
  38
  39         public function execute() {
  40                 // Get parameters
  41                 $params = $this->extractRequestParams();
  42
  43                 $this->helpFormat = $params['helpformat'];
  44                 $this->context = new RequestContext;
  45                 $this->context->setUser( new User ); // anon to avoid caching issues
  46                 $this->context->setLanguage( $this->getMain()->getLanguage() );
  47
  48                 if ( is_array( $params['modules'] ) ) {
  49                         $modules = [];
  50                         foreach ( $params['modules'] as $path ) {
  51                                 if ( $path === '*' || $path === '**' ) {
  52                                         $path = "main+$path";
  53                                 }
  54                                 if ( substr( $path, -2 ) === '+*' || substr( $path, -2 ) === ' *' ) {
  55                                         $submodules = true;
  56                                         $path = substr( $path, 0, -2 );
  57                                         $recursive = false;
  58                                 } elseif ( substr( $path, -3 ) === '+**' || substr( $path, -3 ) === ' **' ) {
  59                                         $submodules = true;
  60                                         $path = substr( $path, 0, -3 );
  61                                         $recursive = true;
  62                                 } else {
  63                                         $submodules = false;
  64                                 }
  65
  66                                 if ( $submodules ) {
  67                                         try {
  68                                                 $module = $this->getModuleFromPath( $path );
  69                                         } catch ( ApiUsageException $ex ) {
  70                                                 foreach ( $ex->getStatusValue()->getErrors() as $error ) {
  71                                                         $this->addWarning( $error );
  72                                                 }
  73                                                 continue;
  74                                         }
  75                                         $submodules = $this->listAllSubmodules( $module, $recursive );
  76                                         if ( $submodules ) {
  77                                                 $modules = array_merge( $modules, $submodules );
  78                                         } else {
  79                                                 $this->addWarning( [ 'apierror-badmodule-nosubmodules', $path ], 'badmodule' );
  80                                         }
  81                                 } else {
  82                                         $modules[] = $path;
  83                                 }
  84                         }
  85                 } else {
  86                         $modules = [];
  87                 }
  88
  89                 if ( is_array( $params['querymodules'] ) ) {
  90                         $queryModules = $params['querymodules'];
  91                         foreach ( $queryModules as $m ) {
  92                                 $modules[] = 'query+' . $m;
  93                         }
  94                 } else {
  95                         $queryModules = [];
  96                 }
  97
  98                 if ( is_array( $params['formatmodules'] ) ) {
  99                         $formatModules = $params['formatmodules'];
 100                         foreach ( $formatModules as $m ) {
 101                                 $modules[] = $m;
 102                         }
 103                 } else {
 104                         $formatModules = [];
 105                 }
 106
 107                 $modules = array_unique( $modules );
 108
 109                 $res = [];
 110
 111                 foreach ( $modules as $m ) {
 112                         try {
 113                                 $module = $this->getModuleFromPath( $m );
 114                         } catch ( ApiUsageException $ex ) {
 115                                 foreach ( $ex->getStatusValue()->getErrors() as $error ) {
 116                                         $this->addWarning( $error );
 117                                 }
 118                                 continue;
 119                         }
 120                         $key = 'modules';
 121
 122                         // Back compat
 123                         $isBCQuery = false;
 124                         if ( $module->getParent() && $module->getParent()->getModuleName() == 'query' &&
 125                                 in_array( $module->getModuleName(), $queryModules )
 126                         ) {
 127                                 $isBCQuery = true;
 128                                 $key = 'querymodules';
 129                         }
 130                         if ( in_array( $module->getModuleName(), $formatModules ) ) {
 131                                 $key = 'formatmodules';
 132                         }
 133
 134                         $item = $this->getModuleInfo( $module );
 135                         if ( $isBCQuery ) {
 136                                 $item['querytype'] = $item['group'];
 137                         }
 138                         $res[$key][] = $item;
 139                 }
 140
 141                 $result = $this->getResult();
 142                 $result->addValue( [ $this->getModuleName() ], 'helpformat', $this->helpFormat );
 143
 144                 foreach ( $res as $key => $stuff ) {
 145                         ApiResult::setIndexedTagName( $res[$key], 'module' );
 146                 }
 147
 148                 if ( $params['mainmodule'] ) {
 149                         $res['mainmodule'] = $this->getModuleInfo( $this->getMain() );
 150                 }
 151
 152                 if ( $params['pagesetmodule'] ) {
 153                         $pageSet = new ApiPageSet( $this->getMain()->getModuleManager()->getModule( 'query' ) );
 154                         $res['pagesetmodule'] = $this->getModuleInfo( $pageSet );
 155                         unset( $res['pagesetmodule']['name'] );
 156                         unset( $res['pagesetmodule']['path'] );
 157                         unset( $res['pagesetmodule']['group'] );
 158                 }
 159
 160                 $result->addValue( null, $this->getModuleName(), $res );
 161         }
 162
 163         /**
 164          * List all submodules of a module
 165          * @param ApiBase $module
 166          * @param boolean $recursive
 167          * @return string[]
 168          */
 169         private function listAllSubmodules( ApiBase $module, $recursive ) {
 170                 $manager = $module->getModuleManager();
 171                 if ( $manager ) {
 172                         $paths = [];
 173                         $names = $manager->getNames();
 174                         sort( $names );
 175                         foreach ( $names as $name ) {
 176                                 $submodule = $manager->getModule( $name );
 177                                 $paths[] = $submodule->getModulePath();
 178                                 if ( $recursive && $submodule->getModuleManager() ) {
 179                                         $paths = array_merge( $paths, $this->listAllSubmodules( $submodule, $recursive ) );
 180                                 }
 181                         }
 182                 }
 183                 return $paths;
 184         }
 185
 186         /**
 187          * @param array $res Result array
 188          * @param string $key Result key
 189          * @param Message[] $msgs
 190          * @param bool $joinLists
 191          */
 192         protected function formatHelpMessages( array &$res, $key, array $msgs, $joinLists = false ) {
 193                 switch ( $this->helpFormat ) {
 194                         case 'none':
 195                                 break;
 196
 197                         case 'wikitext':
 198                                 $ret = [];
 199                                 foreach ( $msgs as $m ) {
 200                                         $ret[] = $m->setContext( $this->context )->text();
 201                                 }
 202                                 $res[$key] = implode( "\n\n", $ret );
 203                                 if ( $joinLists ) {
 204                                         $res[$key] = preg_replace( '!^(([*#:;])[^\n]*)\n\n(?=\2)!m', "$1\n", $res[$key] );
 205                                 }
 206                                 break;
 207
 208                         case 'html':
 209                                 $ret = [];
 210                                 foreach ( $msgs as $m ) {
 211                                         $ret[] = $m->setContext( $this->context )->parseAsBlock();
 212                                 }
 213                                 $ret = implode( "\n", $ret );
 214                                 if ( $joinLists ) {
 215                                         $ret = preg_replace( '!\s*</([oud]l)>\s*<\1>\s*!', "\n", $ret );
 216                                 }
 217                                 $res[$key] = Parser::stripOuterParagraph( $ret );
 218                                 break;
 219
 220                         case 'raw':
 221                                 $res[$key] = [];
 222                                 foreach ( $msgs as $m ) {
 223                                         $a = [
 224                                                 'key' => $m->getKey(),
 225                                                 'params' => $m->getParams(),
 226                                         ];
 227                                         ApiResult::setIndexedTagName( $a['params'], 'param' );
 228                                         if ( $m instanceof ApiHelpParamValueMessage ) {
 229                                                 $a['forvalue'] = $m->getParamValue();
 230                                         }
 231                                         $res[$key][] = $a;
 232                                 }
 233                                 ApiResult::setIndexedTagName( $res[$key], 'msg' );
 234                                 break;
 235                 }
 236         }
 237
 238         /**
 239          * @param ApiBase $module
 240          * @return array
 241          */
 242         private function getModuleInfo( $module ) {
 243                 $ret = [];
 244                 $path = $module->getModulePath();
 245
 246                 $ret['name'] = $module->getModuleName();
 247                 $ret['classname'] = get_class( $module );
 248                 $ret['path'] = $path;
 249                 if ( !$module->isMain() ) {
 250                         $ret['group'] = $module->getParent()->getModuleManager()->getModuleGroup(
 251                                 $module->getModuleName()
 252                         );
 253                 }
 254                 $ret['prefix'] = $module->getModulePrefix();
 255
 256                 $sourceInfo = $module->getModuleSourceInfo();
 257                 if ( $sourceInfo ) {
 258                         $ret['source'] = $sourceInfo['name'];
 259                         if ( isset( $sourceInfo['namemsg'] ) ) {
 260                                 $ret['sourcename'] = $this->context->msg( $sourceInfo['namemsg'] )->text();
 261                         } else {
 262                                 $ret['sourcename'] = $ret['source'];
 263                         }
 264
 265                         $link = SpecialPage::getTitleFor( 'Version', 'License/' . $sourceInfo['name'] )->getFullURL();
 266                         if ( isset( $sourceInfo['license-name'] ) ) {
 267                                 $ret['licensetag'] = $sourceInfo['license-name'];
 268                                 $ret['licenselink'] = (string)$link;
 269                         } elseif ( SpecialVersion::getExtLicenseFileName( dirname( $sourceInfo['path'] ) ) ) {
 270                                 $ret['licenselink'] = (string)$link;
 271                         }
 272                 }
 273
 274                 $this->formatHelpMessages( $ret, 'description', $module->getFinalDescription() );
 275
 276                 foreach ( $module->getHelpFlags() as $flag ) {
 277                         $ret[$flag] = true;
 278                 }
 279
 280                 $ret['helpurls'] = (array)$module->getHelpUrls();
 281                 if ( isset( $ret['helpurls'][0] ) && $ret['helpurls'][0] === false ) {
 282                         $ret['helpurls'] = [];
 283                 }
 284                 ApiResult::setIndexedTagName( $ret['helpurls'], 'helpurl' );
 285
 286                 if ( $this->helpFormat !== 'none' ) {
 287                         $ret['examples'] = [];
 288                         $examples = $module->getExamplesMessages();
 289                         foreach ( $examples as $qs => $msg ) {
 290                                 $item = [
 291                                         'query' => $qs
 292                                 ];
 293                                 $msg = ApiBase::makeMessage( $msg, $this->context, [
 294                                         $module->getModulePrefix(),
 295                                         $module->getModuleName(),
 296                                         $module->getModulePath()
 297                                 ] );
 298                                 $this->formatHelpMessages( $item, 'description', [ $msg ] );
 299                                 if ( isset( $item['description'] ) ) {
 300                                         if ( is_array( $item['description'] ) ) {
 301                                                 $item['description'] = $item['description'][0];
 302                                         } else {
 303                                                 ApiResult::setSubelementsList( $item, 'description' );
 304                                         }
 305                                 }
 306                                 $ret['examples'][] = $item;
 307                         }
 308                         ApiResult::setIndexedTagName( $ret['examples'], 'example' );
 309                 }
 310
 311                 $ret['parameters'] = [];
 312                 $params = $module->getFinalParams( ApiBase::GET_VALUES_FOR_HELP );
 313                 $paramDesc = $module->getFinalParamDescription();
 314                 foreach ( $params as $name => $settings ) {
 315                         if ( !is_array( $settings ) ) {
 316                                 $settings = [ ApiBase::PARAM_DFLT => $settings ];
 317                         }
 318
 319                         $item = [
 320                                 'name' => $name
 321                         ];
 322                         if ( isset( $paramDesc[$name] ) ) {
 323                                 $this->formatHelpMessages( $item, 'description', $paramDesc[$name], true );
 324                         }
 325
 326                         $item['required'] = !empty( $settings[ApiBase::PARAM_REQUIRED] );
 327
 328                         if ( !empty( $settings[ApiBase::PARAM_DEPRECATED] ) ) {
 329                                 $item['deprecated'] = true;
 330                         }
 331
 332                         if ( $name === 'token' && $module->needsToken() ) {
 333                                 $item['tokentype'] = $module->needsToken();
 334                         }
 335
 336                         if ( !isset( $settings[ApiBase::PARAM_TYPE] ) ) {
 337                                 $dflt = isset( $settings[ApiBase::PARAM_DFLT] )
 338                                         ? $settings[ApiBase::PARAM_DFLT]
 339                                         : null;
 340                                 if ( is_bool( $dflt ) ) {
 341                                         $settings[ApiBase::PARAM_TYPE] = 'boolean';
 342                                 } elseif ( is_string( $dflt ) || is_null( $dflt ) ) {
 343                                         $settings[ApiBase::PARAM_TYPE] = 'string';
 344                                 } elseif ( is_int( $dflt ) ) {
 345                                         $settings[ApiBase::PARAM_TYPE] = 'integer';
 346                                 }
 347                         }
 348
 349                         if ( isset( $settings[ApiBase::PARAM_DFLT] ) ) {
 350                                 switch ( $settings[ApiBase::PARAM_TYPE] ) {
 351                                         case 'boolean':
 352                                                 $item['default'] = (bool)$settings[ApiBase::PARAM_DFLT];
 353                                                 break;
 354                                         case 'string':
 355                                         case 'text':
 356                                         case 'password':
 357                                                 $item['default'] = strval( $settings[ApiBase::PARAM_DFLT] );
 358                                                 break;
 359                                         case 'integer':
 360                                         case 'limit':
 361                                                 $item['default'] = intval( $settings[ApiBase::PARAM_DFLT] );
 362                                                 break;
 363                                         case 'timestamp':
 364                                                 $item['default'] = wfTimestamp( TS_ISO_8601, $settings[ApiBase::PARAM_DFLT] );
 365                                                 break;
 366                                         default:
 367                                                 $item['default'] = $settings[ApiBase::PARAM_DFLT];
 368                                                 break;
 369                                 }
 370                         }
 371
 372                         $item['multi'] = !empty( $settings[ApiBase::PARAM_ISMULTI] );
 373                         if ( $item['multi'] ) {
 374                                 $item['limit'] = $this->getMain()->canApiHighLimits() ?
 375                                         ApiBase::LIMIT_SML2 :
 376                                         ApiBase::LIMIT_SML1;
 377                                 $item['lowlimit'] = ApiBase::LIMIT_SML1;
 378                                 $item['highlimit'] = ApiBase::LIMIT_SML2;
 379                         }
 380
 381                         if ( !empty( $settings[ApiBase::PARAM_ALLOW_DUPLICATES] ) ) {
 382                                 $item['allowsduplicates'] = true;
 383                         }
 384
 385                         if ( isset( $settings[ApiBase::PARAM_TYPE] ) ) {
 386                                 if ( $settings[ApiBase::PARAM_TYPE] === 'submodule' ) {
 387                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_MAP] ) ) {
 388                                                 ksort( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
 389                                                 $item['type'] = array_keys( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
 390                                                 $item['submodules'] = $settings[ApiBase::PARAM_SUBMODULE_MAP];
 391                                         } else {
 392                                                 $item['type'] = $module->getModuleManager()->getNames( $name );
 393                                                 sort( $item['type'] );
 394                                                 $prefix = $module->isMain()
 395                                                         ? '' : ( $module->getModulePath() . '+' );
 396                                                 $item['submodules'] = [];
 397                                                 foreach ( $item['type'] as $v ) {
 398                                                         $item['submodules'][$v] = $prefix . $v;
 399                                                 }
 400                                         }
 401                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX] ) ) {
 402                                                 $item['submoduleparamprefix'] = $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX];
 403                                         }
 404                                 } elseif ( $settings[ApiBase::PARAM_TYPE] === 'tags' ) {
 405                                         $item['type'] = ChangeTags::listExplicitlyDefinedTags();
 406                                 } else {
 407                                         $item['type'] = $settings[ApiBase::PARAM_TYPE];
 408                                 }
 409                                 if ( is_array( $item['type'] ) ) {
 410                                         // To prevent sparse arrays from being serialized to JSON as objects
 411                                         $item['type'] = array_values( $item['type'] );
 412                                         ApiResult::setIndexedTagName( $item['type'], 't' );
 413                                 }
 414
 415                                 // Add 'allspecifier' if applicable
 416                                 if ( $item['type'] === 'namespace' ) {
 417                                         $allowAll = true;
 418                                         $allSpecifier = ApiBase::ALL_DEFAULT_STRING;
 419                                 } else {
 420                                         $allowAll = isset( $settings[ApiBase::PARAM_ALL] )
 421                                                 ? $settings[ApiBase::PARAM_ALL]
 422                                                 : false;
 423                                         $allSpecifier = ( is_string( $allowAll ) ? $allowAll : ApiBase::ALL_DEFAULT_STRING );
 424                                 }
 425                                 if ( $allowAll && $item['multi'] &&
 426                                         ( is_array( $item['type'] ) || $item['type'] === 'namespace' ) ) {
 427                                         $item['allspecifier'] = $allSpecifier;
 428                                 }
 429
 430                                 if ( $item['type'] === 'namespace' &&
 431                                         isset( $settings[ApiBase::PARAM_EXTRA_NAMESPACES] ) &&
 432                                         is_array( $settings[ApiBase::PARAM_EXTRA_NAMESPACES] )
 433                                 ) {
 434                                         $item['extranamespaces'] = $settings[ApiBase::PARAM_EXTRA_NAMESPACES];
 435                                         ApiResult::setArrayType( $item['extranamespaces'], 'array' );
 436                                         ApiResult::setIndexedTagName( $item['extranamespaces'], 'ns' );
 437                                 }
 438                         }
 439                         if ( isset( $settings[ApiBase::PARAM_MAX] ) ) {
 440                                 $item['max'] = $settings[ApiBase::PARAM_MAX];
 441                         }
 442                         if ( isset( $settings[ApiBase::PARAM_MAX2] ) ) {
 443                                 $item['highmax'] = $settings[ApiBase::PARAM_MAX2];
 444                         }
 445                         if ( isset( $settings[ApiBase::PARAM_MIN] ) ) {
 446                                 $item['min'] = $settings[ApiBase::PARAM_MIN];
 447                         }
 448                         if ( !empty( $settings[ApiBase::PARAM_RANGE_ENFORCE] ) ) {
 449                                 $item['enforcerange'] = true;
 450                         }
 451                         if ( !empty( $settings[ApiBase::PARAM_DEPRECATED_VALUES] ) ) {
 452                                 $deprecatedValues = array_keys( $settings[ApiBase::PARAM_DEPRECATED_VALUES] );
 453                                 if ( is_array( $item['type'] ) ) {
 454                                         $deprecatedValues = array_intersect( $deprecatedValues, $item['type'] );
 455                                 }
 456                                 if ( $deprecatedValues ) {
 457                                         $item['deprecatedvalues'] = array_values( $deprecatedValues );
 458                                         ApiResult::setIndexedTagName( $item['deprecatedvalues'], 'v' );
 459                                 }
 460                         }
 461
 462                         if ( !empty( $settings[ApiBase::PARAM_HELP_MSG_INFO] ) ) {
 463                                 $item['info'] = [];
 464                                 foreach ( $settings[ApiBase::PARAM_HELP_MSG_INFO] as $i ) {
 465                                         $tag = array_shift( $i );
 466                                         $info = [
 467                                                 'name' => $tag,
 468                                         ];
 469                                         if ( count( $i ) ) {
 470                                                 $info['values'] = $i;
 471                                                 ApiResult::setIndexedTagName( $info['values'], 'v' );
 472                                         }
 473                                         $this->formatHelpMessages( $info, 'text', [
 474                                                 $this->context->msg( "apihelp-{$path}-paraminfo-{$tag}" )
 475                                                         ->numParams( count( $i ) )
 476                                                         ->params( $this->context->getLanguage()->commaList( $i ) )
 477                                                         ->params( $module->getModulePrefix() )
 478                                         ] );
 479                                         ApiResult::setSubelementsList( $info, 'text' );
 480                                         $item['info'][] = $info;
 481                                 }
 482                                 ApiResult::setIndexedTagName( $item['info'], 'i' );
 483                         }
 484
 485                         $ret['parameters'][] = $item;
 486                 }
 487                 ApiResult::setIndexedTagName( $ret['parameters'], 'param' );
 488
 489                 $dynamicParams = $module->dynamicParameterDocumentation();
 490                 if ( $dynamicParams !== null ) {
 491                         if ( $this->helpFormat === 'none' ) {
 492                                 $ret['dynamicparameters'] = true;
 493                         } else {
 494                                 $dynamicParams = ApiBase::makeMessage( $dynamicParams, $this->context, [
 495                                         $module->getModulePrefix(),
 496                                         $module->getModuleName(),
 497                                         $module->getModulePath()
 498                                 ] );
 499                                 $this->formatHelpMessages( $ret, 'dynamicparameters', [ $dynamicParams ] );
 500                         }
 501                 }
 502
 503                 return $ret;
 504         }
 505
 506         public function isReadMode() {
 507                 return false;
 508         }
 509
 510         public function getAllowedParams() {
 511                 // back compat
 512                 $querymodules = $this->getMain()->getModuleManager()
 513                         ->getModule( 'query' )->getModuleManager()->getNames();
 514                 sort( $querymodules );
 515                 $formatmodules = $this->getMain()->getModuleManager()->getNames( 'format' );
 516                 sort( $formatmodules );
 517
 518                 return [
 519                         'modules' => [
 520                                 ApiBase::PARAM_ISMULTI => true,
 521                         ],
 522                         'helpformat' => [
 523                                 ApiBase::PARAM_DFLT => 'none',
 524                                 ApiBase::PARAM_TYPE => [ 'html', 'wikitext', 'raw', 'none' ],
 525                         ],
 526
 527                         'querymodules' => [
 528                                 ApiBase::PARAM_DEPRECATED => true,
 529                                 ApiBase::PARAM_ISMULTI => true,
 530                                 ApiBase::PARAM_TYPE => $querymodules,
 531                         ],
 532                         'mainmodule' => [
 533                                 ApiBase::PARAM_DEPRECATED => true,
 534                         ],
 535                         'pagesetmodule' => [
 536                                 ApiBase::PARAM_DEPRECATED => true,
 537                         ],
 538                         'formatmodules' => [
 539                                 ApiBase::PARAM_DEPRECATED => true,
 540                                 ApiBase::PARAM_ISMULTI => true,
 541                                 ApiBase::PARAM_TYPE => $formatmodules,
 542                         ]
 543                 ];
 544         }
 545
 546         protected function getExamplesMessages() {
 547                 return [
 548                         'action=paraminfo&modules=parse|phpfm|query%2Ballpages|query%2Bsiteinfo'
 549                                 => 'apihelp-paraminfo-example-1',
 550                         'action=paraminfo&modules=query%2B*'
 551                                 => 'apihelp-paraminfo-example-2',
 552                 ];
 553         }
 554
 555         public function getHelpUrls() {
 556                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Parameter_information';
 557         }
 558 }