includes/api/ApiQueryLogEvents.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Oct 16, 2006
   6  *
   7  * Copyright © 2006 Yuri Astrakhan "<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  * Query action to List the log events, with optional filtering by various parameters.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryLogEvents extends ApiQueryBase {
  33
  34         public function __construct( $query, $moduleName ) {
  35                 parent::__construct( $query, $moduleName, 'le' );
  36         }
  37
  38         private $fld_ids = false, $fld_title = false, $fld_type = false,
  39                 $fld_action = false, $fld_user = false, $fld_userid = false,
  40                 $fld_timestamp = false, $fld_comment = false, $fld_parsedcomment = false,
  41                 $fld_details = false, $fld_tags = false;
  42
  43         public function execute() {
  44                 $params = $this->extractRequestParams();
  45                 $db = $this->getDB();
  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_action = isset( $prop['action'] );
  53                 $this->fld_user = isset( $prop['user'] );
  54                 $this->fld_userid = isset( $prop['userid'] );
  55                 $this->fld_timestamp = isset( $prop['timestamp'] );
  56                 $this->fld_comment = isset( $prop['comment'] );
  57                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
  58                 $this->fld_details = isset( $prop['details'] );
  59                 $this->fld_tags = isset( $prop['tags'] );
  60
  61                 $hideLogs = LogEventsList::getExcludeClause( $db, 'user', $this->getUser() );
  62                 if ( $hideLogs !== false ) {
  63                         $this->addWhere( $hideLogs );
  64                 }
  65
  66                 // Order is significant here
  67                 $this->addTables( array( 'logging', 'user', 'page' ) );
  68                 $this->addJoinConds( array(
  69                         'user' => array( 'LEFT JOIN',
  70                                 'user_id=log_user' ),
  71                         'page' => array( 'LEFT JOIN',
  72                                 array( 'log_namespace=page_namespace',
  73                                         'log_title=page_title' ) ) ) );
  74
  75                 $this->addFields( array(
  76                         'log_type',
  77                         'log_action',
  78                         'log_timestamp',
  79                         'log_deleted',
  80                 ) );
  81
  82                 $this->addFieldsIf( array( 'log_id', 'page_id' ), $this->fld_ids );
  83                 $this->addFieldsIf( array( 'log_user', 'log_user_text', 'user_name' ), $this->fld_user );
  84                 $this->addFieldsIf( 'log_user', $this->fld_userid );
  85                 $this->addFieldsIf(
  86                         array( 'log_namespace', 'log_title' ),
  87                         $this->fld_title || $this->fld_parsedcomment
  88                 );
  89                 $this->addFieldsIf( 'log_comment', $this->fld_comment || $this->fld_parsedcomment );
  90                 $this->addFieldsIf( 'log_params', $this->fld_details );
  91
  92                 if ( $this->fld_tags ) {
  93                         $this->addTables( 'tag_summary' );
  94                         $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', 'log_id=ts_log_id' ) ) );
  95                         $this->addFields( 'ts_tags' );
  96                 }
  97
  98                 if ( !is_null( $params['tag'] ) ) {
  99                         $this->addTables( 'change_tag' );
 100                         $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN',
 101                                 array( 'log_id=ct_log_id' ) ) ) );
 102                         $this->addWhereFld( 'ct_tag', $params['tag'] );
 103                 }
 104
 105                 if ( !is_null( $params['action'] ) ) {
 106                         list( $type, $action ) = explode( '/', $params['action'] );
 107                         $this->addWhereFld( 'log_type', $type );
 108                         $this->addWhereFld( 'log_action', $action );
 109                 } elseif ( !is_null( $params['type'] ) ) {
 110                         $this->addWhereFld( 'log_type', $params['type'] );
 111                 }
 112
 113                 $this->addTimestampWhereRange(
 114                         'log_timestamp',
 115                         $params['dir'],
 116                         $params['start'],
 117                         $params['end']
 118                 );
 119
 120                 $limit = $params['limit'];
 121                 $this->addOption( 'LIMIT', $limit + 1 );
 122
 123                 $user = $params['user'];
 124                 if ( !is_null( $user ) ) {
 125                         $userid = User::idFromName( $user );
 126                         if ( $userid ) {
 127                                 $this->addWhereFld( 'log_user', $userid );
 128                         } else {
 129                                 $this->addWhereFld( 'log_user_text', IP::sanitizeIP( $user ) );
 130                         }
 131                 }
 132
 133                 $title = $params['title'];
 134                 if ( !is_null( $title ) ) {
 135                         $titleObj = Title::newFromText( $title );
 136                         if ( is_null( $titleObj ) ) {
 137                                 $this->dieUsage( "Bad title value '$title'", 'param_title' );
 138                         }
 139                         $this->addWhereFld( 'log_namespace', $titleObj->getNamespace() );
 140                         $this->addWhereFld( 'log_title', $titleObj->getDBkey() );
 141                 }
 142
 143                 $prefix = $params['prefix'];
 144
 145                 if ( !is_null( $prefix ) ) {
 146                         global $wgMiserMode;
 147                         if ( $wgMiserMode ) {
 148                                 $this->dieUsage( 'Prefix search disabled in Miser Mode', 'prefixsearchdisabled' );
 149                         }
 150
 151                         $title = Title::newFromText( $prefix );
 152                         if ( is_null( $title ) ) {
 153                                 $this->dieUsage( "Bad title value '$prefix'", 'param_prefix' );
 154                         }
 155                         $this->addWhereFld( 'log_namespace', $title->getNamespace() );
 156                         $this->addWhere( 'log_title ' . $db->buildLike( $title->getDBkey(), $db->anyString() ) );
 157                 }
 158
 159                 // Paranoia: avoid brute force searches (bug 17342)
 160                 if ( !is_null( $title ) || !is_null( $user ) ) {
 161                         if ( !$this->getUser()->isAllowed( 'deletedhistory' ) ) {
 162                                 $titleBits = LogPage::DELETED_ACTION;
 163                                 $userBits = LogPage::DELETED_USER;
 164                         } elseif ( !$this->getUser()->isAllowed( 'suppressrevision' ) ) {
 165                                 $titleBits = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 166                                 $userBits = LogPage::DELETED_USER | LogPage::DELETED_RESTRICTED;
 167                         } else {
 168                                 $titleBits = 0;
 169                                 $userBits = 0;
 170                         }
 171                         if ( !is_null( $title ) && $titleBits ) {
 172                                 $this->addWhere( $db->bitAnd( 'log_deleted', $titleBits ) . " != $titleBits" );
 173                         }
 174                         if ( !is_null( $user ) && $userBits ) {
 175                                 $this->addWhere( $db->bitAnd( 'log_deleted', $userBits ) . " != $userBits" );
 176                         }
 177                 }
 178
 179                 $count = 0;
 180                 $res = $this->select( __METHOD__ );
 181                 $result = $this->getResult();
 182                 foreach ( $res as $row ) {
 183                         if ( ++$count > $limit ) {
 184                                 // We've reached the one extra which shows that there are
 185                                 // additional pages to be had. Stop here...
 186                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->log_timestamp ) );
 187                                 break;
 188                         }
 189
 190                         $vals = $this->extractRowInfo( $row );
 191                         if ( !$vals ) {
 192                                 continue;
 193                         }
 194                         $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 195                         if ( !$fit ) {
 196                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->log_timestamp ) );
 197                                 break;
 198                         }
 199                 }
 200                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 201         }
 202
 203         /**
 204          * @param $result ApiResult
 205          * @param $vals array
 206          * @param $params string
 207          * @param $type string
 208          * @param $action string
 209          * @param $ts
 210          * @param $legacy bool
 211          * @return array
 212          */
 213         public static function addLogParams( $result, &$vals, $params, $type,
 214                 $action, $ts, $legacy = false
 215         ) {
 216                 switch ( $type ) {
 217                         case 'move':
 218                                 if ( $legacy ) {
 219                                         $targetKey = 0;
 220                                         $noredirKey = 1;
 221                                 } else {
 222                                         $targetKey = '4::target';
 223                                         $noredirKey = '5::noredir';
 224                                 }
 225
 226                                 if ( isset( $params[$targetKey] ) ) {
 227                                         $title = Title::newFromText( $params[$targetKey] );
 228                                         if ( $title ) {
 229                                                 $vals2 = array();
 230                                                 ApiQueryBase::addTitleInfo( $vals2, $title, 'new_' );
 231                                                 $vals[$type] = $vals2;
 232                                         }
 233                                 }
 234                                 if ( isset( $params[$noredirKey] ) && $params[$noredirKey] ) {
 235                                         $vals[$type]['suppressedredirect'] = '';
 236                                 }
 237                                 $params = null;
 238                                 break;
 239                         case 'patrol':
 240                                 if ( $legacy ) {
 241                                         $cur = 0;
 242                                         $prev = 1;
 243                                         $auto = 2;
 244                                 } else {
 245                                         $cur = '4::curid';
 246                                         $prev = '5::previd';
 247                                         $auto = '6::auto';
 248                                 }
 249                                 $vals2 = array();
 250                                 $vals2['cur'] = $params[$cur];
 251                                 $vals2['prev'] = $params[$prev];
 252                                 $vals2['auto'] = $params[$auto];
 253                                 $vals[$type] = $vals2;
 254                                 $params = null;
 255                                 break;
 256                         case 'rights':
 257                                 $vals2 = array();
 258                                 if ( $legacy ) {
 259                                         list( $vals2['old'], $vals2['new'] ) = $params;
 260                                 } else {
 261                                         $vals2['new'] = implode( ', ', $params['5::newgroups'] );
 262                                         $vals2['old'] = implode( ', ', $params['4::oldgroups'] );
 263                                 }
 264                                 $vals[$type] = $vals2;
 265                                 $params = null;
 266                                 break;
 267                         case 'block':
 268                                 if ( $action == 'unblock' ) {
 269                                         break;
 270                                 }
 271                                 $vals2 = array();
 272                                 list( $vals2['duration'], $vals2['flags'] ) = $params;
 273
 274                                 // Indefinite blocks have no expiry time
 275                                 if ( SpecialBlock::parseExpiryInput( $params[0] ) !== wfGetDB( DB_SLAVE )->getInfinity() ) {
 276                                         $vals2['expiry'] = wfTimestamp( TS_ISO_8601,
 277                                                 strtotime( $params[0], wfTimestamp( TS_UNIX, $ts ) ) );
 278                                 }
 279                                 $vals[$type] = $vals2;
 280                                 $params = null;
 281                                 break;
 282                         case 'upload':
 283                                 if ( isset( $params['img_timestamp'] ) ) {
 284                                         $params['img_timestamp'] = wfTimestamp( TS_ISO_8601, $params['img_timestamp'] );
 285                                 }
 286                                 break;
 287                 }
 288                 if ( !is_null( $params ) ) {
 289                         $logParams = array();
 290                         // Keys like "4::paramname" can't be used for output so we change them to "paramname"
 291                         foreach ( $params as $key => $value ) {
 292                                 if ( strpos( $key, ':' ) === false ) {
 293                                         $logParams[$key] = $value;
 294                                         continue;
 295                                 }
 296                                 $logParam = explode( ':', $key, 3 );
 297                                 $logParams[$logParam[2]] = $value;
 298                         }
 299                         $result->setIndexedTagName( $logParams, 'param' );
 300                         $result->setIndexedTagName_recursive( $logParams, 'param' );
 301                         $vals = array_merge( $vals, $logParams );
 302                 }
 303
 304                 return $vals;
 305         }
 306
 307         private function extractRowInfo( $row ) {
 308                 $logEntry = DatabaseLogEntry::newFromRow( $row );
 309                 $vals = array();
 310                 $anyHidden = false;
 311                 $user = $this->getUser();
 312
 313                 if ( $this->fld_ids ) {
 314                         $vals['logid'] = intval( $row->log_id );
 315                 }
 316
 317                 if ( $this->fld_title || $this->fld_parsedcomment ) {
 318                         $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 319                 }
 320
 321                 if ( $this->fld_title || $this->fld_ids || $this->fld_details && $row->log_params !== '' ) {
 322                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_ACTION ) ) {
 323                                 $vals['actionhidden'] = '';
 324                                 $anyHidden = true;
 325                         }
 326                         if ( LogEventsList::userCan( $row, LogPage::DELETED_ACTION, $user ) ) {
 327                                 if ( $this->fld_title ) {
 328                                         ApiQueryBase::addTitleInfo( $vals, $title );
 329                                 }
 330                                 if ( $this->fld_ids ) {
 331                                         $vals['pageid'] = intval( $row->page_id );
 332                                 }
 333                                 if ( $this->fld_details && $row->log_params !== '' ) {
 334                                         self::addLogParams(
 335                                                 $this->getResult(),
 336                                                 $vals,
 337                                                 $logEntry->getParameters(),
 338                                                 $logEntry->getType(),
 339                                                 $logEntry->getSubtype(),
 340                                                 $logEntry->getTimestamp(),
 341                                                 $logEntry->isLegacy()
 342                                         );
 343                                 }
 344                         }
 345                 }
 346
 347                 if ( $this->fld_type || $this->fld_action ) {
 348                         $vals['type'] = $row->log_type;
 349                         $vals['action'] = $row->log_action;
 350                 }
 351
 352                 if ( $this->fld_user || $this->fld_userid ) {
 353                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_USER ) ) {
 354                                 $vals['userhidden'] = '';
 355                                 $anyHidden = true;
 356                         }
 357                         if ( LogEventsList::userCan( $row, LogPage::DELETED_USER, $user ) ) {
 358                                 if ( $this->fld_user ) {
 359                                         $vals['user'] = $row->user_name === null ? $row->log_user_text : $row->user_name;
 360                                 }
 361                                 if ( $this->fld_userid ) {
 362                                         $vals['userid'] = $row->log_user;
 363                                 }
 364
 365                                 if ( !$row->log_user ) {
 366                                         $vals['anon'] = '';
 367                                 }
 368                         }
 369                 }
 370                 if ( $this->fld_timestamp ) {
 371                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->log_timestamp );
 372                 }
 373
 374                 if ( ( $this->fld_comment || $this->fld_parsedcomment ) && isset( $row->log_comment ) ) {
 375                         if ( LogEventsList::isDeleted( $row, LogPage::DELETED_COMMENT ) ) {
 376                                 $vals['commenthidden'] = '';
 377                                 $anyHidden = true;
 378                         }
 379                         if ( LogEventsList::userCan( $row, LogPage::DELETED_COMMENT, $user ) ) {
 380                                 if ( $this->fld_comment ) {
 381                                         $vals['comment'] = $row->log_comment;
 382                                 }
 383
 384                                 if ( $this->fld_parsedcomment ) {
 385                                         $vals['parsedcomment'] = Linker::formatComment( $row->log_comment, $title );
 386                                 }
 387                         }
 388                 }
 389
 390                 if ( $this->fld_tags ) {
 391                         if ( $row->ts_tags ) {
 392                                 $tags = explode( ',', $row->ts_tags );
 393                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 394                                 $vals['tags'] = $tags;
 395                         } else {
 396                                 $vals['tags'] = array();
 397                         }
 398                 }
 399
 400                 if ( $anyHidden && LogEventsList::isDeleted( $row, LogPage::DELETED_RESTRICTED ) ) {
 401                         $vals['suppressed'] = '';
 402                 }
 403
 404                 return $vals;
 405         }
 406
 407         public function getCacheMode( $params ) {
 408                 if ( $this->userCanSeeRevDel() ) {
 409                         return 'private';
 410                 }
 411                 if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
 412                         // formatComment() calls wfMessage() among other things
 413                         return 'anon-public-user-private';
 414                 } elseif ( LogEventsList::getExcludeClause( $this->getDB(), 'user', $this->getUser() )
 415                         === LogEventsList::getExcludeClause( $this->getDB(), 'public' )
 416                 ) { // Output can only contain public data.
 417                         return 'public';
 418                 } else {
 419                         return 'anon-public-user-private';
 420                 }
 421         }
 422
 423         public function getAllowedParams() {
 424                 global $wgLogTypes, $wgLogActions, $wgLogActionsHandlers;
 425
 426                 return array(
 427                         'prop' => array(
 428                                 ApiBase::PARAM_ISMULTI => true,
 429                                 ApiBase::PARAM_DFLT => 'ids|title|type|user|timestamp|comment|details',
 430                                 ApiBase::PARAM_TYPE => array(
 431                                         'ids',
 432                                         'title',
 433                                         'type',
 434                                         'user',
 435                                         'userid',
 436                                         'timestamp',
 437                                         'comment',
 438                                         'parsedcomment',
 439                                         'details',
 440                                         'tags'
 441                                 )
 442                         ),
 443                         'type' => array(
 444                                 ApiBase::PARAM_TYPE => $wgLogTypes
 445                         ),
 446                         'action' => array(
 447                                 ApiBase::PARAM_TYPE => array_keys( array_merge( $wgLogActions, $wgLogActionsHandlers ) )
 448                         ),
 449                         'start' => array(
 450                                 ApiBase::PARAM_TYPE => 'timestamp'
 451                         ),
 452                         'end' => array(
 453                                 ApiBase::PARAM_TYPE => 'timestamp'
 454                         ),
 455                         'dir' => array(
 456                                 ApiBase::PARAM_DFLT => 'older',
 457                                 ApiBase::PARAM_TYPE => array(
 458                                         'newer',
 459                                         'older'
 460                                 )
 461                         ),
 462                         'user' => null,
 463                         'title' => null,
 464                         'prefix' => null,
 465                         'tag' => null,
 466                         'limit' => array(
 467                                 ApiBase::PARAM_DFLT => 10,
 468                                 ApiBase::PARAM_TYPE => 'limit',
 469                                 ApiBase::PARAM_MIN => 1,
 470                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 471                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 472                         )
 473                 );
 474         }
 475
 476         public function getParamDescription() {
 477                 $p = $this->getModulePrefix();
 478
 479                 return array(
 480                         'prop' => array(
 481                                 'Which properties to get',
 482                                 ' ids            - Adds the ID of the log event',
 483                                 ' title          - Adds the title of the page for the log event',
 484                                 ' type           - Adds the type of log event',
 485                                 ' user           - Adds the user responsible for the log event',
 486                                 ' userid         - Adds the user ID who was responsible for the log event',
 487                                 ' timestamp      - Adds the timestamp for the event',
 488                                 ' comment        - Adds the comment of the event',
 489                                 ' parsedcomment  - Adds the parsed comment of the event',
 490                                 ' details        - Lists additional details about the event',
 491                                 ' tags           - Lists tags for the event',
 492                         ),
 493                         'type' => 'Filter log entries to only this type',
 494                         'action' => "Filter log actions to only this type. Overrides {$p}type",
 495                         'start' => 'The timestamp to start enumerating from',
 496                         'end' => 'The timestamp to end enumerating',
 497                         'dir' => $this->getDirectionDescription( $p ),
 498                         'user' => 'Filter entries to those made by the given user',
 499                         'title' => 'Filter entries to those related to a page',
 500                         'prefix' => 'Filter entries that start with this prefix. Disabled in Miser Mode',
 501                         'limit' => 'How many total event entries to return',
 502                         'tag' => 'Only list event entries tagged with this tag',
 503                 );
 504         }
 505
 506         public function getResultProperties() {
 507                 global $wgLogTypes;
 508
 509                 return array(
 510                         'ids' => array(
 511                                 'logid' => 'integer',
 512                                 'pageid' => 'integer'
 513                         ),
 514                         'title' => array(
 515                                 'ns' => 'namespace',
 516                                 'title' => 'string'
 517                         ),
 518                         'type' => array(
 519                                 'type' => array(
 520                                         ApiBase::PROP_TYPE => $wgLogTypes
 521                                 ),
 522                                 'action' => 'string'
 523                         ),
 524                         'details' => array(
 525                                 'actionhidden' => 'boolean'
 526                         ),
 527                         'user' => array(
 528                                 'userhidden' => 'boolean',
 529                                 'user' => array(
 530                                         ApiBase::PROP_TYPE => 'string',
 531                                         ApiBase::PROP_NULLABLE => true
 532                                 ),
 533                                 'anon' => 'boolean'
 534                         ),
 535                         'userid' => array(
 536                                 'userhidden' => 'boolean',
 537                                 'userid' => array(
 538                                         ApiBase::PROP_TYPE => 'integer',
 539                                         ApiBase::PROP_NULLABLE => true
 540                                 ),
 541                                 'anon' => 'boolean'
 542                         ),
 543                         'timestamp' => array(
 544                                 'timestamp' => 'timestamp'
 545                         ),
 546                         'comment' => array(
 547                                 'commenthidden' => 'boolean',
 548                                 'comment' => array(
 549                                         ApiBase::PROP_TYPE => 'string',
 550                                         ApiBase::PROP_NULLABLE => true
 551                                 )
 552                         ),
 553                         'parsedcomment' => array(
 554                                 'commenthidden' => 'boolean',
 555                                 'parsedcomment' => array(
 556                                         ApiBase::PROP_TYPE => 'string',
 557                                         ApiBase::PROP_NULLABLE => true
 558                                 )
 559                         )
 560                 );
 561         }
 562
 563         public function getDescription() {
 564                 return 'Get events from logs';
 565         }
 566
 567         public function getPossibleErrors() {
 568                 return array_merge( parent::getPossibleErrors(), array(
 569                         array( 'code' => 'param_user', 'info' => 'User name $user not found' ),
 570                         array( 'code' => 'param_title', 'info' => 'Bad title value \'title\'' ),
 571                         array( 'code' => 'param_prefix', 'info' => 'Bad title value \'prefix\'' ),
 572                         array( 'code' => 'prefixsearchdisabled', 'info' => 'Prefix search disabled in Miser Mode' ),
 573                 ) );
 574         }
 575
 576         public function getExamples() {
 577                 return array(
 578                         'api.php?action=query&list=logevents'
 579                 );
 580         }
 581
 582         public function getHelpUrls() {
 583                 return 'https://www.mediawiki.org/wiki/API:Logevents';
 584         }
 585 }