includes/api/ApiQueryLogEvents.php

   1 <?php
   2 /**
   3  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * Query action to List the log events, with optional filtering by various parameters.
  25  *
  26  * @ingroup API
  27  */
  28 class ApiQueryLogEvents extends ApiQueryBase {
  29
  30         private $commentStore;
  31
  32         public function __construct( ApiQuery $query, $moduleName ) {
  33                 parent::__construct( $query, $moduleName, 'le' );
  34         }
  35
  36         private $fld_ids = false, $fld_title = false, $fld_type = false,
  37                 $fld_user = false, $fld_userid = false,
  38                 $fld_timestamp = false, $fld_comment = false, $fld_parsedcomment = false,
  39                 $fld_details = false, $fld_tags = false;
  40
  41         public function execute() {
  42                 $params = $this->extractRequestParams();
  43                 $db = $this->getDB();
  44                 $this->commentStore = CommentStore::getStore();
  45                 $this->requireMaxOneParameter( $params, 'title', 'prefix', 'namespace' );
  46
  47                 $prop = array_flip( $params['prop'] );
  48
  49                 $this->fld_ids = isset( $prop['ids'] );
  50                 $this->fld_title = isset( $prop['title'] );
  51                 $this->fld_type = isset( $prop['type'] );
  52                 $this->fld_user = isset( $prop['user'] );
  53                 $this->fld_userid = isset( $prop['userid'] );
  54                 $this->fld_timestamp = isset( $prop['timestamp'] );
  55                 $this->fld_comment = isset( $prop['comment'] );
  56                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
  57                 $this->fld_details = isset( $prop['details'] );
  58                 $this->fld_tags = isset( $prop['tags'] );
  59
  60                 $hideLogs = LogEventsList::getExcludeClause( $db, 'user', $this->getUser() );
  61                 if ( $hideLogs !== false ) {
  62                         $this->addWhere( $hideLogs );
  63                 }
  64
  65                 $actorMigration = ActorMigration::newMigration();
  66                 $actorQuery = $actorMigration->getJoin( 'log_user' );
  67                 $this->addTables( 'logging' );
  68                 $this->addTables( $actorQuery['tables'] );
  69                 $this->addTables( [ 'user', 'page' ] );
  70                 $this->addJoinConds( $actorQuery['joins'] );
  71                 $this->addJoinConds( [
  72                         'user' => [ 'LEFT JOIN',
  73                                 'user_id=' . $actorQuery['fields']['log_user'] ],
  74                         'page' => [ 'LEFT JOIN',
  75                                 [ 'log_namespace=page_namespace',
  76                                         'log_title=page_title' ] ] ] );
  77
  78                 $this->addFields( [
  79                         'log_id',
  80                         'log_type',
  81                         'log_action',
  82                         'log_timestamp',
  83                         'log_deleted',
  84                 ] );
  85
  86                 $this->addFieldsIf( 'page_id', $this->fld_ids );
  87                 // log_page is the page_id saved at log time, whereas page_id is from a
  88                 // join at query time.  This leads to different results in various
  89                 // scenarios, e.g. deletion, recreation.
  90                 $this->addFieldsIf( 'log_page', $this->fld_ids );
  91                 $this->addFieldsIf( $actorQuery['fields'] + [ 'user_name' ], $this->fld_user );
  92                 $this->addFieldsIf( $actorQuery['fields'], $this->fld_userid );
  93                 $this->addFieldsIf(
  94                         [ 'log_namespace', 'log_title' ],
  95                         $this->fld_title || $this->fld_parsedcomment
  96                 );
  97                 $this->addFieldsIf( 'log_params', $this->fld_details );
  98
  99                 if ( $this->fld_comment || $this->fld_parsedcomment ) {
 100                         $commentQuery = $this->commentStore->getJoin( 'log_comment' );
 101                         $this->addTables( $commentQuery['tables'] );
 102                         $this->addFields( $commentQuery['fields'] );
 103                         $this->addJoinConds( $commentQuery['joins'] );
 104                 }
 105
 106                 if ( $this->fld_tags ) {
 107                         $this->addTables( 'tag_summary' );
 108                         $this->addJoinConds( [ 'tag_summary' => [ 'LEFT JOIN', 'log_id=ts_log_id' ] ] );
 109                         $this->addFields( 'ts_tags' );
 110                 }
 111
 112                 if ( !is_null( $params['tag'] ) ) {
 113                         $this->addTables( 'change_tag' );
 114                         $this->addJoinConds( [ 'change_tag' => [ 'INNER JOIN',
 115                                 [ 'log_id=ct_log_id' ] ] ] );
 116                         $this->addWhereFld( 'ct_tag', $params['tag'] );
 117                 }
 118
 119                 if ( !is_null( $params['action'] ) ) {
 120                         // Do validation of action param, list of allowed actions can contains wildcards
 121                         // Allow the param, when the actions is in the list or a wildcard version is listed.
 122                         $logAction = $params['action'];
 123                         if ( strpos( $logAction, '/' ) === false ) {
 124                                 // all items in the list have a slash
 125                                 $valid = false;
 126                         } else {
 127                                 $logActions = array_flip( $this->getAllowedLogActions() );
 128                                 list( $type, $action ) = explode( '/', $logAction, 2 );
 129                                 $valid = isset( $logActions[$logAction] ) || isset( $logActions[$type . '/*'] );
 130                         }
 131
 132                         if ( !$valid ) {
 133                                 $encParamName = $this->encodeParamName( 'action' );
 134                                 $this->dieWithError(
 135                                         [ 'apierror-unrecognizedvalue', $encParamName, wfEscapeWikiText( $logAction ) ],
 136                                         "unknown_$encParamName"
 137                                 );
 138                         }
 139
 140                         $this->addWhereFld( 'log_type', $type );
 141                         $this->addWhereFld( 'log_action', $action );
 142                 } elseif ( !is_null( $params['type'] ) ) {
 143                         $this->addWhereFld( 'log_type', $params['type'] );
 144                 }
 145
 146                 $this->addTimestampWhereRange(
 147                         'log_timestamp',
 148                         $params['dir'],
 149                         $params['start'],
 150                         $params['end']
 151                 );
 152                 // Include in ORDER BY for uniqueness
 153                 $this->addWhereRange( 'log_id', $params['dir'], null, null );
 154
 155                 if ( !is_null( $params['continue'] ) ) {
 156                         $cont = explode( '|', $params['continue'] );
 157                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 158                         $op = ( $params['dir'] === 'newer' ? '>' : '<' );
 159                         $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
 160                         $continueId = (int)$cont[1];
 161                         $this->dieContinueUsageIf( $continueId != $cont[1] );
 162                         $this->addWhere( "log_timestamp $op $continueTimestamp OR " .
 163                                 "(log_timestamp = $continueTimestamp AND " .
 164                                 "log_id $op= $continueId)"
 165                         );
 166                 }
 167
 168                 $limit = $params['limit'];
 169                 $this->addOption( 'LIMIT', $limit + 1 );
 170
 171                 $user = $params['user'];
 172                 if ( !is_null( $user ) ) {
 173                         // Note the joins in $q are the same as those from ->getJoin() above
 174                         // so we only need to add 'conds' here.
 175                         // Don't query by user ID here, it might be able to use the
 176                         // log_user_text_time or log_user_text_type_time index.
 177                         $q = $actorMigration->getWhere(
 178                                 $db, 'log_user', User::newFromName( $params['user'], false ), false
 179                         );
 180                         $this->addWhere( $q['conds'] );
 181                 }
 182
 183                 $title = $params['title'];
 184                 if ( !is_null( $title ) ) {
 185                         $titleObj = Title::newFromText( $title );
 186                         if ( is_null( $titleObj ) ) {
 187                                 $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $title ) ] );
 188                         }
 189                         $this->addWhereFld( 'log_namespace', $titleObj->getNamespace() );
 190                         $this->addWhereFld( 'log_title', $titleObj->getDBkey() );
 191                 }
 192
 193                 if ( $params['namespace'] !== null ) {
 194                         $this->addWhereFld( 'log_namespace', $params['namespace'] );
 195                 }
 196
 197                 $prefix = $params['prefix'];
 198
 199                 if ( !is_null( $prefix ) ) {
 200                         if ( $this->getConfig()->get( 'MiserMode' ) ) {
 201                                 $this->dieWithError( 'apierror-prefixsearchdisabled' );
 202                         }
 203
 204                         $title = Title::newFromText( $prefix );
 205                         if ( is_null( $title ) ) {
 206                                 $this->dieWithError( [ 'apierror-invalidtitle', wfEscapeWikiText( $prefix ) ] );
 207                         }
 208                         $this->addWhereFld( 'log_namespace', $title->getNamespace() );
 209                         $this->addWhere( 'log_title ' . $db->buildLike( $title->getDBkey(), $db->anyString() ) );
 210                 }
 211
 212                 // Paranoia: avoid brute force searches (T19342)
 213                 if ( $params['namespace'] !== null || !is_null( $title ) || !is_null( $user ) ) {
 214                         if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
 215                                 $titleBits = LogPage::DELETED_ACTION;
 216                                 $userBits = LogPage::DELETED_USER;
 217                         } elseif ( !$this->getUser()->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 218                                 $titleBits = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 219                                 $userBits = LogPage::DELETED_USER | LogPage::DELETED_RESTRICTED;
 220                         } else {
 221                                 $titleBits = 0;
 222                                 $userBits = 0;
 223                         }
 224                         if ( ( $params['namespace'] !== null || !is_null( $title ) ) && $titleBits ) {
 225                                 $this->addWhere( $db->bitAnd( 'log_deleted', $titleBits ) . " != $titleBits" );
 226                         }
 227                         if ( !is_null( $user ) && $userBits ) {
 228                                 $this->addWhere( $db->bitAnd( 'log_deleted', $userBits ) . " != $userBits" );
 229                         }
 230                 }
 231
 232                 $count = 0;
 233                 $res = $this->select( __METHOD__ );
 234                 $result = $this->getResult();
 235                 foreach ( $res as $row ) {
 236                         if ( ++$count > $limit ) {
 237                                 // We've reached the one extra which shows that there are
 238                                 // additional pages to be had. Stop here...
 239                                 $this->setContinueEnumParameter( 'continue', "$row->log_timestamp|$row->log_id" );
 240                                 break;
 241                         }
 242
 243                         $vals = $this->extractRowInfo( $row );
 244                         $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
 245                         if ( !$fit ) {
 246                                 $this->setContinueEnumParameter( 'continue', "$row->log_timestamp|$row->log_id" );
 247                                 break;
 248                         }
 249                 }
 250                 $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'item' );
 251         }
 252
 253         /**
 254          * @deprecated since 1.25 Use LogFormatter::formatParametersForApi instead
 255          * @param ApiResult $result
 256          * @param array &$vals
 257          * @param string $params
 258          * @param string $type
 259          * @param string $action
 260          * @param string $ts
 261          * @param bool $legacy
 262          * @return array
 263          */
 264         public static function addLogParams( $result, &$vals, $params, $type,
 265                 $action, $ts, $legacy = false
 266         ) {
 267                 wfDeprecated( __METHOD__, '1.25' );
 268
 269                 $entry = new ManualLogEntry( $type, $action );
 270                 $entry->setParameters( $params );
 271                 $entry->setTimestamp( $ts );
 272                 $entry->setLegacy( $legacy );
 273                 $formatter = LogFormatter::newFromEntry( $entry );
 274                 $vals['params'] = $formatter->formatParametersForApi();
 275
 276                 return $vals;
 277         }
 278
 279         private function extractRowInfo( $row ) {
 280                 $logEntry = DatabaseLogEntry::newFromRow( $row );
 281                 $vals = [
 282                         ApiResult::META_TYPE => 'assoc',
 283                 ];
 284                 $anyHidden = false;
 285                 $user = $this->getUser();
 286
 287                 if ( $this->fld_ids ) {
 288                         $vals['logid'] = intval( $row->log_id );
 289                 }
 290
 291                 if ( $this->fld_title || $this->fld_parsedcomment ) {
 292                         $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 293                 }
 294
 295                 if ( $this->fld_title || $this->fld_ids || $this->fld_details && $row->log_params !== '' ) {
 296                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_ACTION ) ) {
 297                                 $vals['actionhidden'] = true;
 298                                 $anyHidden = true;
 299                         }
 300                         if ( LogEventsList::userCan( $row, LogPage::DELETED_ACTION, $user ) ) {
 301                                 if ( $this->fld_title ) {
 302                                         ApiQueryBase::addTitleInfo( $vals, $title );
 303                                 }
 304                                 if ( $this->fld_ids ) {
 305                                         $vals['pageid'] = intval( $row->page_id );
 306                                         $vals['logpage'] = intval( $row->log_page );
 307                                 }
 308                                 if ( $this->fld_details ) {
 309                                         $vals['params'] = LogFormatter::newFromEntry( $logEntry )->formatParametersForApi();
 310                                 }
 311                         }
 312                 }
 313
 314                 if ( $this->fld_type ) {
 315                         $vals['type'] = $row->log_type;
 316                         $vals['action'] = $row->log_action;
 317                 }
 318
 319                 if ( $this->fld_user || $this->fld_userid ) {
 320                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_USER ) ) {
 321                                 $vals['userhidden'] = true;
 322                                 $anyHidden = true;
 323                         }
 324                         if ( LogEventsList::userCan( $row, LogPage::DELETED_USER, $user ) ) {
 325                                 if ( $this->fld_user ) {
 326                                         $vals['user'] = $row->user_name === null ? $row->log_user_text : $row->user_name;
 327                                 }
 328                                 if ( $this->fld_userid ) {
 329                                         $vals['userid'] = intval( $row->log_user );
 330                                 }
 331
 332                                 if ( !$row->log_user ) {
 333                                         $vals['anon'] = true;
 334                                 }
 335                         }
 336                 }
 337                 if ( $this->fld_timestamp ) {
 338                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->log_timestamp );
 339                 }
 340
 341                 if ( $this->fld_comment || $this->fld_parsedcomment ) {
 342                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_COMMENT ) ) {
 343                                 $vals['commenthidden'] = true;
 344                                 $anyHidden = true;
 345                         }
 346                         if ( LogEventsList::userCan( $row, LogPage::DELETED_COMMENT, $user ) ) {
 347                                 $comment = $this->commentStore->getComment( 'log_comment', $row )->text;
 348                                 if ( $this->fld_comment ) {
 349                                         $vals['comment'] = $comment;
 350                                 }
 351
 352                                 if ( $this->fld_parsedcomment ) {
 353                                         $vals['parsedcomment'] = Linker::formatComment( $comment, $title );
 354                                 }
 355                         }
 356                 }
 357
 358                 if ( $this->fld_tags ) {
 359                         if ( $row->ts_tags ) {
 360                                 $tags = explode( ',', $row->ts_tags );
 361                                 ApiResult::setIndexedTagName( $tags, 'tag' );
 362                                 $vals['tags'] = $tags;
 363                         } else {
 364                                 $vals['tags'] = [];
 365                         }
 366                 }
 367
 368                 if ( $anyHidden && LogEventsList::isDeleted( $row, LogPage::DELETED_RESTRICTED ) ) {
 369                         $vals['suppressed'] = true;
 370                 }
 371
 372                 return $vals;
 373         }
 374
 375         /**
 376          * @return array
 377          */
 378         private function getAllowedLogActions() {
 379                 $config = $this->getConfig();
 380                 return array_keys( array_merge(
 381                         $config->get( 'LogActions' ),
 382                         $config->get( 'LogActionsHandlers' )
 383                 ) );
 384         }
 385
 386         public function getCacheMode( $params ) {
 387                 if ( $this->userCanSeeRevDel() ) {
 388                         return 'private';
 389                 }
 390                 if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
 391                         // formatComment() calls wfMessage() among other things
 392                         return 'anon-public-user-private';
 393                 } elseif ( LogEventsList::getExcludeClause( $this->getDB(), 'user', $this->getUser() )
 394                         === LogEventsList::getExcludeClause( $this->getDB(), 'public' )
 395                 ) { // Output can only contain public data.
 396                         return 'public';
 397                 } else {
 398                         return 'anon-public-user-private';
 399                 }
 400         }
 401
 402         public function getAllowedParams( $flags = 0 ) {
 403                 $config = $this->getConfig();
 404                 $ret = [
 405                         'prop' => [
 406                                 ApiBase::PARAM_ISMULTI => true,
 407                                 ApiBase::PARAM_DFLT => 'ids|title|type|user|timestamp|comment|details',
 408                                 ApiBase::PARAM_TYPE => [
 409                                         'ids',
 410                                         'title',
 411                                         'type',
 412                                         'user',
 413                                         'userid',
 414                                         'timestamp',
 415                                         'comment',
 416                                         'parsedcomment',
 417                                         'details',
 418                                         'tags'
 419                                 ],
 420                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 421                         ],
 422                         'type' => [
 423                                 ApiBase::PARAM_TYPE => $config->get( 'LogTypes' )
 424                         ],
 425                         'action' => [
 426                                 // validation on request is done in execute()
 427                                 ApiBase::PARAM_TYPE => ( $flags & ApiBase::GET_VALUES_FOR_HELP )
 428                                         ? $this->getAllowedLogActions()
 429                                         : null
 430                         ],
 431                         'start' => [
 432                                 ApiBase::PARAM_TYPE => 'timestamp'
 433                         ],
 434                         'end' => [
 435                                 ApiBase::PARAM_TYPE => 'timestamp'
 436                         ],
 437                         'dir' => [
 438                                 ApiBase::PARAM_DFLT => 'older',
 439                                 ApiBase::PARAM_TYPE => [
 440                                         'newer',
 441                                         'older'
 442                                 ],
 443                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
 444                         ],
 445                         'user' => [
 446                                 ApiBase::PARAM_TYPE => 'user',
 447                         ],
 448                         'title' => null,
 449                         'namespace' => [
 450                                 ApiBase::PARAM_TYPE => 'namespace',
 451                                 ApiBase::PARAM_EXTRA_NAMESPACES => [ NS_MEDIA, NS_SPECIAL ],
 452                         ],
 453                         'prefix' => [],
 454                         'tag' => null,
 455                         'limit' => [
 456                                 ApiBase::PARAM_DFLT => 10,
 457                                 ApiBase::PARAM_TYPE => 'limit',
 458                                 ApiBase::PARAM_MIN => 1,
 459                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 460                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 461                         ],
 462                         'continue' => [
 463                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 464                         ],
 465                 ];
 466
 467                 if ( $config->get( 'MiserMode' ) ) {
 468                         $ret['prefix'][ApiBase::PARAM_HELP_MSG] = 'api-help-param-disabled-in-miser-mode';
 469                 }
 470
 471                 return $ret;
 472         }
 473
 474         protected function getExamplesMessages() {
 475                 return [
 476                         'action=query&list=logevents'
 477                                 => 'apihelp-query+logevents-example-simple',
 478                 ];
 479         }
 480
 481         public function getHelpUrls() {
 482                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Logevents';
 483         }
 484 }