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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 bool $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['lowlimit'] = !empty( $settings[ApiBase::PARAM_ISMULTI_LIMIT1] )
375                                         ? $settings[ApiBase::PARAM_ISMULTI_LIMIT1]
376                                         : ApiBase::LIMIT_SML1;
377                                 $item['highlimit'] = !empty( $settings[ApiBase::PARAM_ISMULTI_LIMIT2] )
378                                         ? $settings[ApiBase::PARAM_ISMULTI_LIMIT2]
379                                         : ApiBase::LIMIT_SML2;
380                                 $item['limit'] = $this->getMain()->canApiHighLimits()
381                                         ? $item['highlimit']
382                                         : $item['lowlimit'];
383                         }
384
385                         if ( !empty( $settings[ApiBase::PARAM_ALLOW_DUPLICATES] ) ) {
386                                 $item['allowsduplicates'] = true;
387                         }
388
389                         if ( isset( $settings[ApiBase::PARAM_TYPE] ) ) {
390                                 if ( $settings[ApiBase::PARAM_TYPE] === 'submodule' ) {
391                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_MAP] ) ) {
392                                                 ksort( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
393                                                 $item['type'] = array_keys( $settings[ApiBase::PARAM_SUBMODULE_MAP] );
394                                                 $item['submodules'] = $settings[ApiBase::PARAM_SUBMODULE_MAP];
395                                         } else {
396                                                 $item['type'] = $module->getModuleManager()->getNames( $name );
397                                                 sort( $item['type'] );
398                                                 $prefix = $module->isMain()
399                                                         ? '' : ( $module->getModulePath() . '+' );
400                                                 $item['submodules'] = [];
401                                                 foreach ( $item['type'] as $v ) {
402                                                         $item['submodules'][$v] = $prefix . $v;
403                                                 }
404                                         }
405                                         if ( isset( $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX] ) ) {
406                                                 $item['submoduleparamprefix'] = $settings[ApiBase::PARAM_SUBMODULE_PARAM_PREFIX];
407                                         }
408
409                                         $deprecatedSubmodules = [];
410                                         foreach ( $item['submodules'] as $v => $submodulePath ) {
411                                                 try {
412                                                         $submod = $this->getModuleFromPath( $submodulePath );
413                                                         if ( $submod && $submod->isDeprecated() ) {
414                                                                 $deprecatedSubmodules[] = $v;
415                                                         }
416                                                 } catch ( ApiUsageException $ex ) {
417                                                         // Ignore
418                                                 }
419                                         }
420                                         if ( $deprecatedSubmodules ) {
421                                                 $item['type'] = array_merge(
422                                                         array_diff( $item['type'], $deprecatedSubmodules ),
423                                                         $deprecatedSubmodules
424                                                 );
425                                                 $item['deprecatedvalues'] = $deprecatedSubmodules;
426                                         }
427                                 } elseif ( $settings[ApiBase::PARAM_TYPE] === 'tags' ) {
428                                         $item['type'] = ChangeTags::listExplicitlyDefinedTags();
429                                 } else {
430                                         $item['type'] = $settings[ApiBase::PARAM_TYPE];
431                                 }
432                                 if ( is_array( $item['type'] ) ) {
433                                         // To prevent sparse arrays from being serialized to JSON as objects
434                                         $item['type'] = array_values( $item['type'] );
435                                         ApiResult::setIndexedTagName( $item['type'], 't' );
436                                 }
437
438                                 // Add 'allspecifier' if applicable
439                                 if ( $item['type'] === 'namespace' ) {
440                                         $allowAll = true;
441                                         $allSpecifier = ApiBase::ALL_DEFAULT_STRING;
442                                 } else {
443                                         $allowAll = isset( $settings[ApiBase::PARAM_ALL] )
444                                                 ? $settings[ApiBase::PARAM_ALL]
445                                                 : false;
446                                         $allSpecifier = ( is_string( $allowAll ) ? $allowAll : ApiBase::ALL_DEFAULT_STRING );
447                                 }
448                                 if ( $allowAll && $item['multi'] &&
449                                         ( is_array( $item['type'] ) || $item['type'] === 'namespace' ) ) {
450                                         $item['allspecifier'] = $allSpecifier;
451                                 }
452
453                                 if ( $item['type'] === 'namespace' &&
454                                         isset( $settings[ApiBase::PARAM_EXTRA_NAMESPACES] ) &&
455                                         is_array( $settings[ApiBase::PARAM_EXTRA_NAMESPACES] )
456                                 ) {
457                                         $item['extranamespaces'] = $settings[ApiBase::PARAM_EXTRA_NAMESPACES];
458                                         ApiResult::setArrayType( $item['extranamespaces'], 'array' );
459                                         ApiResult::setIndexedTagName( $item['extranamespaces'], 'ns' );
460                                 }
461                         }
462                         if ( isset( $settings[ApiBase::PARAM_MAX] ) ) {
463                                 $item['max'] = $settings[ApiBase::PARAM_MAX];
464                         }
465                         if ( isset( $settings[ApiBase::PARAM_MAX2] ) ) {
466                                 $item['highmax'] = $settings[ApiBase::PARAM_MAX2];
467                         }
468                         if ( isset( $settings[ApiBase::PARAM_MIN] ) ) {
469                                 $item['min'] = $settings[ApiBase::PARAM_MIN];
470                         }
471                         if ( !empty( $settings[ApiBase::PARAM_RANGE_ENFORCE] ) ) {
472                                 $item['enforcerange'] = true;
473                         }
474                         if ( !empty( $settings[ApiBase::PARAM_DEPRECATED_VALUES] ) ) {
475                                 $deprecatedValues = array_keys( $settings[ApiBase::PARAM_DEPRECATED_VALUES] );
476                                 if ( is_array( $item['type'] ) ) {
477                                         $deprecatedValues = array_intersect( $deprecatedValues, $item['type'] );
478                                 }
479                                 if ( $deprecatedValues ) {
480                                         $item['deprecatedvalues'] = array_values( $deprecatedValues );
481                                         ApiResult::setIndexedTagName( $item['deprecatedvalues'], 'v' );
482                                 }
483                         }
484
485                         if ( !empty( $settings[ApiBase::PARAM_HELP_MSG_INFO] ) ) {
486                                 $item['info'] = [];
487                                 foreach ( $settings[ApiBase::PARAM_HELP_MSG_INFO] as $i ) {
488                                         $tag = array_shift( $i );
489                                         $info = [
490                                                 'name' => $tag,
491                                         ];
492                                         if ( count( $i ) ) {
493                                                 $info['values'] = $i;
494                                                 ApiResult::setIndexedTagName( $info['values'], 'v' );
495                                         }
496                                         $this->formatHelpMessages( $info, 'text', [
497                                                 $this->context->msg( "apihelp-{$path}-paraminfo-{$tag}" )
498                                                         ->numParams( count( $i ) )
499                                                         ->params( $this->context->getLanguage()->commaList( $i ) )
500                                                         ->params( $module->getModulePrefix() )
501                                         ] );
502                                         ApiResult::setSubelementsList( $info, 'text' );
503                                         $item['info'][] = $info;
504                                 }
505                                 ApiResult::setIndexedTagName( $item['info'], 'i' );
506                         }
507
508                         $ret['parameters'][] = $item;
509                 }
510                 ApiResult::setIndexedTagName( $ret['parameters'], 'param' );
511
512                 $dynamicParams = $module->dynamicParameterDocumentation();
513                 if ( $dynamicParams !== null ) {
514                         if ( $this->helpFormat === 'none' ) {
515                                 $ret['dynamicparameters'] = true;
516                         } else {
517                                 $dynamicParams = ApiBase::makeMessage( $dynamicParams, $this->context, [
518                                         $module->getModulePrefix(),
519                                         $module->getModuleName(),
520                                         $module->getModulePath()
521                                 ] );
522                                 $this->formatHelpMessages( $ret, 'dynamicparameters', [ $dynamicParams ] );
523                         }
524                 }
525
526                 return $ret;
527         }
528
529         public function isReadMode() {
530                 return false;
531         }
532
533         public function getAllowedParams() {
534                 // back compat
535                 $querymodules = $this->getMain()->getModuleManager()
536                         ->getModule( 'query' )->getModuleManager()->getNames();
537                 sort( $querymodules );
538                 $formatmodules = $this->getMain()->getModuleManager()->getNames( 'format' );
539                 sort( $formatmodules );
540
541                 return [
542                         'modules' => [
543                                 ApiBase::PARAM_ISMULTI => true,
544                         ],
545                         'helpformat' => [
546                                 ApiBase::PARAM_DFLT => 'none',
547                                 ApiBase::PARAM_TYPE => [ 'html', 'wikitext', 'raw', 'none' ],
548                         ],
549
550                         'querymodules' => [
551                                 ApiBase::PARAM_DEPRECATED => true,
552                                 ApiBase::PARAM_ISMULTI => true,
553                                 ApiBase::PARAM_TYPE => $querymodules,
554                         ],
555                         'mainmodule' => [
556                                 ApiBase::PARAM_DEPRECATED => true,
557                         ],
558                         'pagesetmodule' => [
559                                 ApiBase::PARAM_DEPRECATED => true,
560                         ],
561                         'formatmodules' => [
562                                 ApiBase::PARAM_DEPRECATED => true,
563                                 ApiBase::PARAM_ISMULTI => true,
564                                 ApiBase::PARAM_TYPE => $formatmodules,
565                         ]
566                 ];
567         }
568
569         protected function getExamplesMessages() {
570                 return [
571                         'action=paraminfo&modules=parse|phpfm|query%2Ballpages|query%2Bsiteinfo'
572                                 => 'apihelp-paraminfo-example-1',
573                         'action=paraminfo&modules=query%2B*'
574                                 => 'apihelp-paraminfo-example-2',
575                 ];
576         }
577
578         public function getHelpUrls() {
579                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Parameter_information';
580         }
581 }