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 ( UsageException $ex ) {
  70                                                 $this->setWarning( $ex->getMessage() );
  71                                         }
  72                                         $submodules = $this->listAllSubmodules( $module, $recursive );
  73                                         if ( $submodules ) {
  74                                                 $modules = array_merge( $modules, $submodules );
  75                                         } else {
  76                                                 $this->setWarning( "Module $path has no submodules" );
  77                                         }
  78                                 } else {
  79                                         $modules[] = $path;
  80                                 }
  81                         }
  82                 } else {
  83                         $modules = [];
  84                 }
  85
  86                 if ( is_array( $params['querymodules'] ) ) {
  87                         $queryModules = $params['querymodules'];
  88                         foreach ( $queryModules as $m ) {
  89                                 $modules[] = 'query+' . $m;
  90                         }
  91                 } else {
  92                         $queryModules = [];
  93                 }
  94
  95                 if ( is_array( $params['formatmodules'] ) ) {
  96                         $formatModules = $params['formatmodules'];
  97                         foreach ( $formatModules as $m ) {
  98                                 $modules[] = $m;
  99                         }
 100                 } else {
 101                         $formatModules = [];
 102                 }
 103
 104                 $modules = array_unique( $modules );
 105
 106                 $res = [];
 107
 108                 foreach ( $modules as $m ) {
 109                         try {
 110                                 $module = $this->getModuleFromPath( $m );
 111                         } catch ( UsageException $ex ) {
 112                                 $this->setWarning( $ex->getMessage() );
 113                                 continue;
 114                         }
 115                         $key = 'modules';
 116
 117                         // Back compat
 118                         $isBCQuery = false;
 119                         if ( $module->getParent() && $module->getParent()->getModuleName() == 'query' &&
 120                                 in_array( $module->getModuleName(), $queryModules )
 121                         ) {
 122                                 $isBCQuery = true;
 123                                 $key = 'querymodules';
 124                         }
 125                         if ( in_array( $module->getModuleName(), $formatModules ) ) {
 126                                 $key = 'formatmodules';
 127                         }
 128
 129                         $item = $this->getModuleInfo( $module );
 130                         if ( $isBCQuery ) {
 131                                 $item['querytype'] = $item['group'];
 132                         }
 133                         $res[$key][] = $item;
 134                 }
 135
 136                 $result = $this->getResult();
 137                 $result->addValue( [ $this->getModuleName() ], 'helpformat', $this->helpFormat );
 138
 139                 foreach ( $res as $key => $stuff ) {
 140                         ApiResult::setIndexedTagName( $res[$key], 'module' );
 141                 }
 142
 143                 if ( $params['mainmodule'] ) {
 144                         $res['mainmodule'] = $this->getModuleInfo( $this->getMain() );
 145                 }
 146
 147                 if ( $params['pagesetmodule'] ) {
 148                         $pageSet = new ApiPageSet( $this->getMain()->getModuleManager()->getModule( 'query' ) );
 149                         $res['pagesetmodule'] = $this->getModuleInfo( $pageSet );
 150                         unset( $res['pagesetmodule']['name'] );
 151                         unset( $res['pagesetmodule']['path'] );
 152                         unset( $res['pagesetmodule']['group'] );
 153                 }
 154
 155                 $result->addValue( null, $this->getModuleName(), $res );
 156         }
 157
 158         /**
 159          * List all submodules of a module
 160          * @param ApiBase $module
 161          * @param boolean $recursive
 162          * @return string[]
 163          */
 164         private function listAllSubmodules( ApiBase $module, $recursive ) {
 165                 $manager = $module->getModuleManager();
 166                 if ( $manager ) {
 167                         $paths = [];
 168                         $names = $manager->getNames();
 169                         sort( $names );
 170                         foreach ( $names as $name ) {
 171                                 $submodule = $manager->getModule( $name );
 172                                 $paths[] = $submodule->getModulePath();
 173                                 if ( $recursive && $submodule->getModuleManager() ) {
 174                                         $paths = array_merge( $paths, $this->listAllSubmodules( $submodule, $recursive ) );
 175                                 }
 176                         }
 177                 }
 178                 return $paths;
 179         }
 180
 181         /**
 182          * @param array $res Result array
 183          * @param string $key Result key
 184          * @param Message[] $msgs
 185          * @param bool $joinLists
 186          */
 187         protected function formatHelpMessages( array &$res, $key, array $msgs, $joinLists = false ) {
 188                 switch ( $this->helpFormat ) {
 189                         case 'none':
 190                                 break;
 191
 192                         case 'wikitext':
 193                                 $ret = [];
 194                                 foreach ( $msgs as $m ) {
 195                                         $ret[] = $m->setContext( $this->context )->text();
 196                                 }
 197                                 $res[$key] = implode( "\n\n", $ret );
 198                                 if ( $joinLists ) {
 199                                         $res[$key] = preg_replace( '!^(([*#:;])[^\n]*)\n\n(?=\2)!m', "$1\n", $res[$key] );
 200                                 }
 201                                 break;
 202
 203                         case 'html':
 204                                 $ret = [];
 205                                 foreach ( $msgs as $m ) {
 206                                         $ret[] = $m->setContext( $this->context )->parseAsBlock();
 207                                 }
 208                                 $ret = implode( "\n", $ret );
 209                                 if ( $joinLists ) {
 210                                         $ret = preg_replace( '!\s*</([oud]l)>\s*<\1>\s*!', "\n", $ret );
 211                                 }
 212                                 $res[$key] = Parser::stripOuterParagraph( $ret );
 213                                 break;
 214
 215                         case 'raw':
 216                                 $res[$key] = [];
 217                                 foreach ( $msgs as $m ) {
 218                                         $a = [
 219                                                 'key' => $m->getKey(),
 220                                                 'params' => $m->getParams(),
 221                                         ];
 222                                         ApiResult::setIndexedTagName( $a['params'], 'param' );
 223                                         if ( $m instanceof ApiHelpParamValueMessage ) {
 224                                                 $a['forvalue'] = $m->getParamValue();
 225                                         }
 226                                         $res[$key][] = $a;
 227                                 }
 228                                 ApiResult::setIndexedTagName( $res[$key], 'msg' );
 229                                 break;
 230                 }
 231         }
 232
 233         /**
 234          * @param ApiBase $module
 235          * @return ApiResult
 236          */
 237         private function getModuleInfo( $module ) {
 238                 $ret = [];
 239                 $path = $module->getModulePath();
 240
 241                 $ret['name'] = $module->getModuleName();
 242                 $ret['classname'] = get_class( $module );
 243                 $ret['path'] = $path;
 244                 if ( !$module->isMain() ) {
 245                         $ret['group'] = $module->getParent()->getModuleManager()->getModuleGroup(
 246                                 $module->getModuleName()
 247                         );
 248                 }
 249                 $ret['prefix'] = $module->getModulePrefix();
 250
 251                 $sourceInfo = $module->getModuleSourceInfo();
 252                 if ( $sourceInfo ) {
 253                         $ret['source'] = $sourceInfo['name'];
 254                         if ( isset( $sourceInfo['namemsg'] ) ) {
 255                                 $ret['sourcename'] = $this->context->msg( $sourceInfo['namemsg'] )->text();
 256                         } else {
 257                                 $ret['sourcename'] = $ret['source'];
 258                         }
 259
 260                         $link = SpecialPage::getTitleFor( 'Version', 'License/' . $sourceInfo['name'] )->getFullURL();
 261                         if ( isset( $sourceInfo['license-name'] ) ) {
 262                                 $ret['licensetag'] = $sourceInfo['license-name'];
 263                                 $ret['licenselink'] = (string)$link;
 264                         } elseif ( SpecialVersion::getExtLicenseFileName( dirname( $sourceInfo['path'] ) ) ) {
 265                                 $ret['licenselink'] = (string)$link;
 266                         }
 267                 }
 268
 269                 $this->formatHelpMessages( $ret, 'description', $module->getFinalDescription() );
 270
 271                 foreach ( $module->getHelpFlags() as $flag ) {
 272                         $ret[$flag] = true;
 273                 }
 274
 275                 $ret['helpurls'] = (array)$module->getHelpUrls();
 276                 if ( isset( $ret['helpurls'][0] ) && $ret['helpurls'][0] === false ) {
 277                         $ret['helpurls'] = [];
 278                 }
 279                 ApiResult::setIndexedTagName( $ret['helpurls'], 'helpurl' );
 280
 281                 if ( $this->helpFormat !== 'none' ) {
 282                         $ret['examples'] = [];
 283                         $examples = $module->getExamplesMessages();
 284                         foreach ( $examples as $qs => $msg ) {
 285                                 $item = [
 286                                         'query' => $qs
 287                                 ];
 288                                 $msg = ApiBase::makeMessage( $msg, $this->context, [
 289                                         $module->getModulePrefix(),
 290                                         $module->getModuleName(),
 291                                         $module->getModulePath()
 292                                 ] );
 293                                 $this->formatHelpMessages( $item, 'description', [ $msg ] );
 294                                 if ( isset( $item['description'] ) ) {
 295                                         if ( is_array( $item['description'] ) ) {
 296                                                 $item['description'] = $item['description'][0];
 297                                         } else {
 298                                                 ApiResult::setSubelementsList( $item, 'description' );
 299                                         }
 300                                 }
 301                                 $ret['examples'][] = $item;
 302                         }
 303                         ApiResult::setIndexedTagName( $ret['examples'], 'example' );
 304                 }
 305
 306                 $ret['parameters'] = [];
 307                 $params = $module->getFinalParams( ApiBase::GET_VALUES_FOR_HELP );
 308                 $paramDesc = $module->getFinalParamDescription();
 309                 foreach ( $params as $name => $settings ) {
 310                         if ( !is_array( $settings ) ) {
 311                                 $settings = [ ApiBase::PARAM_DFLT => $settings ];
 312                         }
 313
 314                         $item = [
 315                                 'name' => $name
 316                         ];
 317                         if ( isset( $paramDesc[$name] ) ) {
 318                                 $this->formatHelpMessages( $item, 'description', $paramDesc[$name], true );
 319                         }
 320
 321                         $item['required'] = !empty( $settings[ApiBase::PARAM_REQUIRED] );
 322
 323                         if ( !empty( $settings[ApiBase::PARAM_DEPRECATED] ) ) {
 324                                 $item['deprecated'] = true;
 325                         }
 326
 327                         if ( $name === 'token' && $module->needsToken() ) {
 328                                 $item['tokentype'] = $module->needsToken();
 329                         }
 330
 331                         if ( !isset( $settings[ApiBase::PARAM_TYPE] ) ) {
 332                                 $dflt = isset( $settings[ApiBase::PARAM_DFLT] )
 333                                         ? $settings[ApiBase::PARAM_DFLT]
 334                                         : null;
 335                                 if ( is_bool( $dflt ) ) {
 336                                         $settings[ApiBase::PARAM_TYPE] = 'boolean';
 337                                 } elseif ( is_string( $dflt ) || is_null( $dflt ) ) {
 338                                         $settings[ApiBase::PARAM_TYPE] = 'string';
 339                                 } elseif ( is_int( $dflt ) ) {
 340                                         $settings[ApiBase::PARAM_TYPE] = 'integer';
 341                                 }
 342                         }
 343
 344                         if ( isset( $settings[ApiBase::PARAM_DFLT] ) ) {
 345                                 switch ( $settings[ApiBase::PARAM_TYPE] ) {
 346                                         case 'boolean':
 347                                                 $item['default'] = (bool)$settings[ApiBase::PARAM_DFLT];
 348                                                 break;
 349                                         case 'string':
 350                                         case 'text':
 351                                         case 'password':
 352                                                 $item['default'] = strval( $settings[ApiBase::PARAM_DFLT] );
 353                                                 break;
 354                                         case 'integer':
 355                                         case 'limit':
 356                                                 $item['default'] = intval( $settings[ApiBase::PARAM_DFLT] );
 357                                                 break;
 358                                         case 'timestamp':
 359                                                 $item['default'] = wfTimestamp( TS_ISO_8601, $settings[ApiBase::PARAM_DFLT] );
 360                                                 break;
 361                                         default:
 362                                                 $item['default'] = $settings[ApiBase::PARAM_DFLT];
 363                                                 break;
 364                                 }
 365                         }
 366
 367                         $item['multi'] = !empty( $settings[ApiBase::PARAM_ISMULTI] );
 368                         if ( $item['multi'] ) {
 369                                 $item['limit'] = $this->getMain()->canApiHighLimits() ?
 370                                         ApiBase::LIMIT_SML2 :
 371                                         ApiBase::LIMIT_SML1;
 372                                 $item['lowlimit'] = ApiBase::LIMIT_SML1;
 373                                 $item['highlimit'] = ApiBase::LIMIT_SML2;
 374                         }
 375
 376                         if ( !empty( $settings[ApiBase::PARAM_ALLOW_DUPLICATES] ) ) {
 377                                 $item['allowsduplicates'] = true;
 378                         }
 379
 380                         if ( isset( $settings[ApiBase::PARAM_TYPE] ) ) {
 381                                 if ( $settings[ApiBase::PARAM_TYPE] === 'submodule' ) {
 382                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_MAP] ) ) {
 383                                                 ksort( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
 384                                                 $item['type'] = array_keys( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
 385                                                 $item['submodules'] = $settings[ApiBase::PARAM_SUBMODULE_MAP];
 386                                         } else {
 387                                                 $item['type'] = $module->getModuleManager()->getNames( $name );
 388                                                 sort( $item['type'] );
 389                                                 $prefix = $module->isMain()
 390                                                         ? '' : ( $module->getModulePath() . '+' );
 391                                                 $item['submodules'] = [];
 392                                                 foreach ( $item['type'] as $v ) {
 393                                                         $item['submodules'][$v] = $prefix . $v;
 394                                                 }
 395                                         }
 396                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX] ) ) {
 397                                                 $item['submoduleparamprefix'] = $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX];
 398                                         }
 399                                 } elseif ( $settings[ApiBase::PARAM_TYPE] === 'tags' ) {
 400                                         $item['type'] = ChangeTags::listExplicitlyDefinedTags();
 401                                 } else {
 402                                         $item['type'] = $settings[ApiBase::PARAM_TYPE];
 403                                 }
 404                                 if ( is_array( $item['type'] ) ) {
 405                                         // To prevent sparse arrays from being serialized to JSON as objects
 406                                         $item['type'] = array_values( $item['type'] );
 407                                         ApiResult::setIndexedTagName( $item['type'], 't' );
 408                                 }
 409
 410                                 // Add 'allspecifier' if applicable
 411                                 if ( $item['type'] === 'namespace' ) {
 412                                         $allowAll = true;
 413                                         $allSpecifier = ApiBase::ALL_DEFAULT_STRING;
 414                                 } else {
 415                                         $allowAll = isset( $settings[ApiBase::PARAM_ALL] )
 416                                                 ? $settings[ApiBase::PARAM_ALL]
 417                                                 : false;
 418                                         $allSpecifier = ( is_string( $allowAll ) ? $allowAll : ApiBase::ALL_DEFAULT_STRING );
 419                                 }
 420                                 if ( $allowAll && $item['multi'] &&
 421                                         ( is_array( $item['type'] ) || $item['type'] === 'namespace' ) ) {
 422                                         $item['allspecifier'] = $allSpecifier;
 423                                 }
 424                         }
 425                         if ( isset( $settings[ApiBase::PARAM_MAX] ) ) {
 426                                 $item['max'] = $settings[ApiBase::PARAM_MAX];
 427                         }
 428                         if ( isset( $settings[ApiBase::PARAM_MAX2] ) ) {
 429                                 $item['highmax'] = $settings[ApiBase::PARAM_MAX2];
 430                         }
 431                         if ( isset( $settings[ApiBase::PARAM_MIN] ) ) {
 432                                 $item['min'] = $settings[ApiBase::PARAM_MIN];
 433                         }
 434                         if ( !empty( $settings[ApiBase::PARAM_RANGE_ENFORCE] ) ) {
 435                                 $item['enforcerange'] = true;
 436                         }
 437
 438                         if ( !empty( $settings[ApiBase::PARAM_HELP_MSG_INFO] ) ) {
 439                                 $item['info'] = [];
 440                                 foreach ( $settings[ApiBase::PARAM_HELP_MSG_INFO] as $i ) {
 441                                         $tag = array_shift( $i );
 442                                         $info = [
 443                                                 'name' => $tag,
 444                                         ];
 445                                         if ( count( $i ) ) {
 446                                                 $info['values'] = $i;
 447                                                 ApiResult::setIndexedTagName( $info['values'], 'v' );
 448                                         }
 449                                         $this->formatHelpMessages( $info, 'text', [
 450                                                 $this->context->msg( "apihelp-{$path}-paraminfo-{$tag}" )
 451                                                         ->numParams( count( $i ) )
 452                                                         ->params( $this->context->getLanguage()->commaList( $i ) )
 453                                                         ->params( $module->getModulePrefix() )
 454                                         ] );
 455                                         ApiResult::setSubelementsList( $info, 'text' );
 456                                         $item['info'][] = $info;
 457                                 }
 458                                 ApiResult::setIndexedTagName( $item['info'], 'i' );
 459                         }
 460
 461                         $ret['parameters'][] = $item;
 462                 }
 463                 ApiResult::setIndexedTagName( $ret['parameters'], 'param' );
 464
 465                 $dynamicParams = $module->dynamicParameterDocumentation();
 466                 if ( $dynamicParams !== null ) {
 467                         if ( $this->helpFormat === 'none' ) {
 468                                 $ret['dynamicparameters'] = true;
 469                         } else {
 470                                 $dynamicParams = ApiBase::makeMessage( $dynamicParams, $this->context, [
 471                                         $module->getModulePrefix(),
 472                                         $module->getModuleName(),
 473                                         $module->getModulePath()
 474                                 ] );
 475                                 $this->formatHelpMessages( $ret, 'dynamicparameters', [ $dynamicParams ] );
 476                         }
 477                 }
 478
 479                 return $ret;
 480         }
 481
 482         public function isReadMode() {
 483                 return false;
 484         }
 485
 486         public function getAllowedParams() {
 487                 // back compat
 488                 $querymodules = $this->getMain()->getModuleManager()
 489                         ->getModule( 'query' )->getModuleManager()->getNames();
 490                 sort( $querymodules );
 491                 $formatmodules = $this->getMain()->getModuleManager()->getNames( 'format' );
 492                 sort( $formatmodules );
 493
 494                 return [
 495                         'modules' => [
 496                                 ApiBase::PARAM_ISMULTI => true,
 497                         ],
 498                         'helpformat' => [
 499                                 ApiBase::PARAM_DFLT => 'none',
 500                                 ApiBase::PARAM_TYPE => [ 'html', 'wikitext', 'raw', 'none' ],
 501                         ],
 502
 503                         'querymodules' => [
 504                                 ApiBase::PARAM_DEPRECATED => true,
 505                                 ApiBase::PARAM_ISMULTI => true,
 506                                 ApiBase::PARAM_TYPE => $querymodules,
 507                         ],
 508                         'mainmodule' => [
 509                                 ApiBase::PARAM_DEPRECATED => true,
 510                         ],
 511                         'pagesetmodule' => [
 512                                 ApiBase::PARAM_DEPRECATED => true,
 513                         ],
 514                         'formatmodules' => [
 515                                 ApiBase::PARAM_DEPRECATED => true,
 516                                 ApiBase::PARAM_ISMULTI => true,
 517                                 ApiBase::PARAM_TYPE => $formatmodules,
 518                         ]
 519                 ];
 520         }
 521
 522         protected function getExamplesMessages() {
 523                 return [
 524                         'action=paraminfo&modules=parse|phpfm|query%2Ballpages|query%2Bsiteinfo'
 525                                 => 'apihelp-paraminfo-example-1',
 526                         'action=paraminfo&modules=query%2B*'
 527                                 => 'apihelp-paraminfo-example-2',
 528                 ];
 529         }
 530
 531         public function getHelpUrls() {
 532                 return 'https://www.mediawiki.org/wiki/API:Parameter_information';
 533         }
 534 }