includes/logging/LogFormatter.php

   1 <?php
   2 /**
   3  * Contains classes for formatting log entries
   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  * @author Niklas Laxström
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  23  * @since 1.19
  24  */
  25
  26 /**
  27  * Implements the default log formatting.
  28  *
  29  * Can be overridden by subclassing and setting:
  30  *
  31  *     $wgLogActionsHandlers['type/subtype'] = 'class'; or
  32  *     $wgLogActionsHandlers['type/*'] = 'class';
  33  *
  34  * @since 1.19
  35  */
  36 class LogFormatter {
  37         // Audience options for viewing usernames, comments, and actions
  38         const FOR_PUBLIC = 1;
  39         const FOR_THIS_USER = 2;
  40
  41         // Static->
  42
  43         /**
  44          * Constructs a new formatter suitable for given entry.
  45          * @param LogEntry $entry
  46          * @return LogFormatter
  47          */
  48         public static function newFromEntry( LogEntry $entry ) {
  49                 global $wgLogActionsHandlers;
  50                 $fulltype = $entry->getFullType();
  51                 $wildcard = $entry->getType() . '/*';
  52                 $handler = '';
  53
  54                 if ( isset( $wgLogActionsHandlers[$fulltype] ) ) {
  55                         $handler = $wgLogActionsHandlers[$fulltype];
  56                 } elseif ( isset( $wgLogActionsHandlers[$wildcard] ) ) {
  57                         $handler = $wgLogActionsHandlers[$wildcard];
  58                 }
  59
  60                 if ( $handler !== '' && is_string( $handler ) && class_exists( $handler ) ) {
  61                         return new $handler( $entry );
  62                 }
  63
  64                 return new LegacyLogFormatter( $entry );
  65         }
  66
  67         /**
  68          * Handy shortcut for constructing a formatter directly from
  69          * database row.
  70          * @param stdClass|array $row
  71          * @see DatabaseLogEntry::getSelectQueryData
  72          * @return LogFormatter
  73          */
  74         public static function newFromRow( $row ) {
  75                 return self::newFromEntry( DatabaseLogEntry::newFromRow( $row ) );
  76         }
  77
  78         // Nonstatic->
  79
  80         /** @var LogEntryBase */
  81         protected $entry;
  82
  83         /** @var int Constant for handling log_deleted */
  84         protected $audience = self::FOR_PUBLIC;
  85
  86         /** @var IContextSource Context for logging */
  87         public $context;
  88
  89         /** @var bool Whether to output user tool links */
  90         protected $linkFlood = false;
  91
  92         /**
  93          * Set to true if we are constructing a message text that is going to
  94          * be included in page history or send to IRC feed. Links are replaced
  95          * with plaintext or with [[pagename]] kind of syntax, that is parsed
  96          * by page histories and IRC feeds.
  97          * @var string
  98          */
  99         protected $plaintext = false;
 100
 101         /** @var string */
 102         protected $irctext = false;
 103
 104         protected function __construct( LogEntry $entry ) {
 105                 $this->entry = $entry;
 106                 $this->context = RequestContext::getMain();
 107         }
 108
 109         /**
 110          * Replace the default context
 111          * @param IContextSource $context
 112          */
 113         public function setContext( IContextSource $context ) {
 114                 $this->context = $context;
 115         }
 116
 117         /**
 118          * Set the visibility restrictions for displaying content.
 119          * If set to public, and an item is deleted, then it will be replaced
 120          * with a placeholder even if the context user is allowed to view it.
 121          * @param int $audience Const self::FOR_THIS_USER or self::FOR_PUBLIC
 122          */
 123         public function setAudience( $audience ) {
 124                 $this->audience = ( $audience == self::FOR_THIS_USER )
 125                         ? self::FOR_THIS_USER
 126                         : self::FOR_PUBLIC;
 127         }
 128
 129         /**
 130          * Check if a log item can be displayed
 131          * @param int $field LogPage::DELETED_* constant
 132          * @return bool
 133          */
 134         protected function canView( $field ) {
 135                 if ( $this->audience == self::FOR_THIS_USER ) {
 136                         return LogEventsList::userCanBitfield(
 137                                 $this->entry->getDeleted(), $field, $this->context->getUser() );
 138                 } else {
 139                         return !$this->entry->isDeleted( $field );
 140                 }
 141         }
 142
 143         /**
 144          * If set to true, will produce user tool links after
 145          * the user name. This should be replaced with generic
 146          * CSS/JS solution.
 147          * @param bool $value
 148          */
 149         public function setShowUserToolLinks( $value ) {
 150                 $this->linkFlood = $value;
 151         }
 152
 153         /**
 154          * Ugly hack to produce plaintext version of the message.
 155          * Usually you also want to set extraneous request context
 156          * to avoid formatting for any particular user.
 157          * @see getActionText()
 158          * @return string Plain text
 159          */
 160         public function getPlainActionText() {
 161                 $this->plaintext = true;
 162                 $text = $this->getActionText();
 163                 $this->plaintext = false;
 164
 165                 return $text;
 166         }
 167
 168         /**
 169          * Even uglier hack to maintain backwards compatibilty with IRC bots
 170          * (bug 34508).
 171          * @see getActionText()
 172          * @return string Text
 173          */
 174         public function getIRCActionComment() {
 175                 $actionComment = $this->getIRCActionText();
 176                 $comment = $this->entry->getComment();
 177
 178                 if ( $comment != '' ) {
 179                         if ( $actionComment == '' ) {
 180                                 $actionComment = $comment;
 181                         } else {
 182                                 $actionComment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $comment;
 183                         }
 184                 }
 185
 186                 return $actionComment;
 187         }
 188
 189         /**
 190          * Even uglier hack to maintain backwards compatibilty with IRC bots
 191          * (bug 34508).
 192          * @see getActionText()
 193          * @return string Text
 194          */
 195         public function getIRCActionText() {
 196                 global $wgContLang;
 197
 198                 $this->plaintext = true;
 199                 $this->irctext = true;
 200
 201                 $entry = $this->entry;
 202                 $parameters = $entry->getParameters();
 203                 // @see LogPage::actionText()
 204                 // Text of title the action is aimed at.
 205                 $target = $entry->getTarget()->getPrefixedText();
 206                 $text = null;
 207                 switch ( $entry->getType() ) {
 208                         case 'move':
 209                                 switch ( $entry->getSubtype() ) {
 210                                         case 'move':
 211                                                 $movesource = $parameters['4::target'];
 212                                                 $text = wfMessage( '1movedto2' )
 213                                                         ->rawParams( $target, $movesource )->inContentLanguage()->escaped();
 214                                                 break;
 215                                         case 'move_redir':
 216                                                 $movesource = $parameters['4::target'];
 217                                                 $text = wfMessage( '1movedto2_redir' )
 218                                                         ->rawParams( $target, $movesource )->inContentLanguage()->escaped();
 219                                                 break;
 220                                         case 'move-noredirect':
 221                                                 break;
 222                                         case 'move_redir-noredirect':
 223                                                 break;
 224                                 }
 225                                 break;
 226
 227                         case 'delete':
 228                                 switch ( $entry->getSubtype() ) {
 229                                         case 'delete':
 230                                                 $text = wfMessage( 'deletedarticle' )
 231                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 232                                                 break;
 233                                         case 'restore':
 234                                                 $text = wfMessage( 'undeletedarticle' )
 235                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 236                                                 break;
 237                                         // @codingStandardsIgnoreStart Long line
 238                                         //case 'revision': // Revision deletion
 239                                         //case 'event': // Log deletion
 240                                         // see https://github.com/wikimedia/mediawiki/commit/a9c243b7b5289dad204278dbe7ed571fd914e395
 241                                         //default:
 242                                         // @codingStandardsIgnoreEnd
 243                                 }
 244                                 break;
 245
 246                         case 'patrol':
 247                                 // @codingStandardsIgnoreStart Long line
 248                                 // https://github.com/wikimedia/mediawiki/commit/1a05f8faf78675dc85984f27f355b8825b43efff
 249                                 // @codingStandardsIgnoreEnd
 250                                 // Create a diff link to the patrolled revision
 251                                 if ( $entry->getSubtype() === 'patrol' ) {
 252                                         $diffLink = htmlspecialchars(
 253                                                 wfMessage( 'patrol-log-diff', $parameters['4::curid'] )
 254                                                         ->inContentLanguage()->text() );
 255                                         $text = wfMessage( 'patrol-log-line', $diffLink, "[[$target]]", "" )
 256                                                 ->inContentLanguage()->text();
 257                                 } else {
 258                                         // broken??
 259                                 }
 260                                 break;
 261
 262                         case 'protect':
 263                                 switch ( $entry->getSubtype() ) {
 264                                         case 'protect':
 265                                                 $text = wfMessage( 'protectedarticle' )
 266                                                         ->rawParams( $target . ' ' . $parameters['4::description'] )->inContentLanguage()->escaped();
 267                                                 break;
 268                                         case 'unprotect':
 269                                                 $text = wfMessage( 'unprotectedarticle' )
 270                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 271                                                 break;
 272                                         case 'modify':
 273                                                 $text = wfMessage( 'modifiedarticleprotection' )
 274                                                         ->rawParams( $target . ' ' . $parameters['4::description'] )->inContentLanguage()->escaped();
 275                                                 break;
 276                                         case 'move_prot':
 277                                                 $text = wfMessage( 'movedarticleprotection' )
 278                                                         ->rawParams( $target, $parameters['4::oldtitle'] )->inContentLanguage()->escaped();
 279                                                 break;
 280                                 }
 281                                 break;
 282
 283                         case 'newusers':
 284                                 switch ( $entry->getSubtype() ) {
 285                                         case 'newusers':
 286                                         case 'create':
 287                                                 $text = wfMessage( 'newuserlog-create-entry' )
 288                                                         ->inContentLanguage()->escaped();
 289                                                 break;
 290                                         case 'create2':
 291                                         case 'byemail':
 292                                                 $text = wfMessage( 'newuserlog-create2-entry' )
 293                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 294                                                 break;
 295                                         case 'autocreate':
 296                                                 $text = wfMessage( 'newuserlog-autocreate-entry' )
 297                                                         ->inContentLanguage()->escaped();
 298                                                 break;
 299                                 }
 300                                 break;
 301
 302                         case 'upload':
 303                                 switch ( $entry->getSubtype() ) {
 304                                         case 'upload':
 305                                                 $text = wfMessage( 'uploadedimage' )
 306                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 307                                                 break;
 308                                         case 'overwrite':
 309                                                 $text = wfMessage( 'overwroteimage' )
 310                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 311                                                 break;
 312                                 }
 313                                 break;
 314
 315                         case 'rights':
 316                                 if ( count( $parameters['4::oldgroups'] ) ) {
 317                                         $oldgroups = implode( ', ', $parameters['4::oldgroups'] );
 318                                 } else {
 319                                         $oldgroups = wfMessage( 'rightsnone' )->inContentLanguage()->escaped();
 320                                 }
 321                                 if ( count( $parameters['5::newgroups'] ) ) {
 322                                         $newgroups = implode( ', ', $parameters['5::newgroups'] );
 323                                 } else {
 324                                         $newgroups = wfMessage( 'rightsnone' )->inContentLanguage()->escaped();
 325                                 }
 326                                 switch ( $entry->getSubtype() ) {
 327                                         case 'rights':
 328                                                 $text = wfMessage( 'rightslogentry' )
 329                                                         ->rawParams( $target, $oldgroups, $newgroups )->inContentLanguage()->escaped();
 330                                                 break;
 331                                         case 'autopromote':
 332                                                 $text = wfMessage( 'rightslogentry-autopromote' )
 333                                                         ->rawParams( $target, $oldgroups, $newgroups )->inContentLanguage()->escaped();
 334                                                 break;
 335                                 }
 336                                 break;
 337
 338                         case 'merge':
 339                                 $text = wfMessage( 'pagemerge-logentry' )
 340                                         ->rawParams( $target, $parameters['4::dest'], $parameters['5::mergepoint'] )
 341                                         ->inContentLanguage()->escaped();
 342                                 break;
 343
 344                         case 'block':
 345                                 switch ( $entry->getSubtype() ) {
 346                                         case 'block':
 347                                                 // Keep compatibility with extensions by checking for
 348                                                 // new key (5::duration/6::flags) or old key (0/optional 1)
 349                                                 if ( $entry->isLegacy() ) {
 350                                                         $rawDuration = $parameters[0];
 351                                                         $rawFlags = isset( $parameters[1] ) ? $parameters[1] : '';
 352                                                 } else {
 353                                                         $rawDuration = $parameters['5::duration'];
 354                                                         $rawFlags = $parameters['6::flags'];
 355                                                 }
 356                                                 $duration = $wgContLang->translateBlockExpiry( $rawDuration );
 357                                                 $flags = BlockLogFormatter::formatBlockFlags( $rawFlags, $wgContLang );
 358                                                 $text = wfMessage( 'blocklogentry' )
 359                                                         ->rawParams( $target, $duration, $flags )->inContentLanguage()->escaped();
 360                                                 break;
 361                                         case 'unblock':
 362                                                 $text = wfMessage( 'unblocklogentry' )
 363                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 364                                                 break;
 365                                         case 'reblock':
 366                                                 $duration = $wgContLang->translateBlockExpiry( $parameters['5::duration'] );
 367                                                 $flags = BlockLogFormatter::formatBlockFlags( $parameters['6::flags'], $wgContLang );
 368                                                 $text = wfMessage( 'reblock-logentry' )
 369                                                         ->rawParams( $target, $duration, $flags )->inContentLanguage()->escaped();
 370                                                 break;
 371                                 }
 372                                 break;
 373
 374                         case 'import':
 375                                 switch ( $entry->getSubtype() ) {
 376                                         case 'upload':
 377                                                 $text = wfMessage( 'import-logentry-upload' )
 378                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 379                                                 break;
 380                                         case 'interwiki':
 381                                                 $text = wfMessage( 'import-logentry-interwiki' )
 382                                                         ->rawParams( $target )->inContentLanguage()->escaped();
 383                                                 break;
 384                                 }
 385                                 break;
 386                         // case 'suppress' --private log -- aaron  (so we know who to blame in a few years :-D)
 387                         // default:
 388                 }
 389                 if ( is_null( $text ) ) {
 390                         $text = $this->getPlainActionText();
 391                 }
 392
 393                 $this->plaintext = false;
 394                 $this->irctext = false;
 395
 396                 return $text;
 397         }
 398
 399         /**
 400          * Gets the log action, including username.
 401          * @return string HTML
 402          */
 403         public function getActionText() {
 404                 if ( $this->canView( LogPage::DELETED_ACTION ) ) {
 405                         $element = $this->getActionMessage();
 406                         if ( $element instanceof Message ) {
 407                                 $element = $this->plaintext ? $element->text() : $element->escaped();
 408                         }
 409                         if ( $this->entry->isDeleted( LogPage::DELETED_ACTION ) ) {
 410                                 $element = $this->styleRestricedElement( $element );
 411                         }
 412                 } else {
 413                         $sep = $this->msg( 'word-separator' );
 414                         $sep = $this->plaintext ? $sep->text() : $sep->escaped();
 415                         $performer = $this->getPerformerElement();
 416                         $element = $performer . $sep . $this->getRestrictedElement( 'rev-deleted-event' );
 417                 }
 418
 419                 return $element;
 420         }
 421
 422         /**
 423          * Returns a sentence describing the log action. Usually
 424          * a Message object is returned, but old style log types
 425          * and entries might return pre-escaped HTML string.
 426          * @return Message|string Pre-escaped HTML
 427          */
 428         protected function getActionMessage() {
 429                 $message = $this->msg( $this->getMessageKey() );
 430                 $message->params( $this->getMessageParameters() );
 431
 432                 return $message;
 433         }
 434
 435         /**
 436          * Returns a key to be used for formatting the action sentence.
 437          * Default is logentry-TYPE-SUBTYPE for modern logs. Legacy log
 438          * types will use custom keys, and subclasses can also alter the
 439          * key depending on the entry itself.
 440          * @return string Message key
 441          */
 442         protected function getMessageKey() {
 443                 $type = $this->entry->getType();
 444                 $subtype = $this->entry->getSubtype();
 445
 446                 return "logentry-$type-$subtype";
 447         }
 448
 449         /**
 450          * Returns extra links that comes after the action text, like "revert", etc.
 451          *
 452          * @return string
 453          */
 454         public function getActionLinks() {
 455                 return '';
 456         }
 457
 458         /**
 459          * Extracts the optional extra parameters for use in action messages.
 460          * The array indexes start from number 3.
 461          * @return array
 462          */
 463         protected function extractParameters() {
 464                 $entry = $this->entry;
 465                 $params = [];
 466
 467                 if ( $entry->isLegacy() ) {
 468                         foreach ( $entry->getParameters() as $index => $value ) {
 469                                 $params[$index + 3] = $value;
 470                         }
 471                 }
 472
 473                 // Filter out parameters which are not in format #:foo
 474                 foreach ( $entry->getParameters() as $key => $value ) {
 475                         if ( strpos( $key, ':' ) === false ) {
 476                                 continue;
 477                         }
 478                         list( $index, $type, ) = explode( ':', $key, 3 );
 479                         if ( ctype_digit( $index ) ) {
 480                                 $params[$index - 1] = $this->formatParameterValue( $type, $value );
 481                         }
 482                 }
 483
 484                 /* Message class doesn't like non consecutive numbering.
 485                  * Fill in missing indexes with empty strings to avoid
 486                  * incorrect renumbering.
 487                  */
 488                 if ( count( $params ) ) {
 489                         $max = max( array_keys( $params ) );
 490                         // index 0 to 2 are added in getMessageParameters
 491                         for ( $i = 3; $i < $max; $i++ ) {
 492                                 if ( !isset( $params[$i] ) ) {
 493                                         $params[$i] = '';
 494                                 }
 495                         }
 496                 }
 497
 498                 return $params;
 499         }
 500
 501         /**
 502          * Formats parameters intented for action message from
 503          * array of all parameters. There are three hardcoded
 504          * parameters (array is zero-indexed, this list not):
 505          *  - 1: user name with premade link
 506          *  - 2: usable for gender magic function
 507          *  - 3: target page with premade link
 508          * @return array
 509          */
 510         protected function getMessageParameters() {
 511                 if ( isset( $this->parsedParameters ) ) {
 512                         return $this->parsedParameters;
 513                 }
 514
 515                 $entry = $this->entry;
 516                 $params = $this->extractParameters();
 517                 $params[0] = Message::rawParam( $this->getPerformerElement() );
 518                 $params[1] = $this->canView( LogPage::DELETED_USER ) ? $entry->getPerformer()->getName() : '';
 519                 $params[2] = Message::rawParam( $this->makePageLink( $entry->getTarget() ) );
 520
 521                 // Bad things happens if the numbers are not in correct order
 522                 ksort( $params );
 523
 524                 $this->parsedParameters = $params;
 525                 return $this->parsedParameters;
 526         }
 527
 528         /**
 529          * Formats parameters values dependent to their type
 530          * @param string $type The type of the value.
 531          *   Valid are currently:
 532          *     * - (empty) or plain: The value is returned as-is
 533          *     * raw: The value will be added to the log message
 534          *            as raw parameter (e.g. no escaping)
 535          *            Use this only if there is no other working
 536          *            type like user-link or title-link
 537          *     * msg: The value is a message-key, the output is
 538          *            the message in user language
 539          *     * msg-content: The value is a message-key, the output
 540          *                    is the message in content language
 541          *     * user: The value is a user name, e.g. for GENDER
 542          *     * user-link: The value is a user name, returns a
 543          *                  link for the user
 544          *     * title: The value is a page title,
 545          *              returns name of page
 546          *     * title-link: The value is a page title,
 547          *                   returns link to this page
 548          *     * number: Format value as number
 549          *     * list: Format value as a comma-separated list
 550          * @param mixed $value The parameter value that should be formatted
 551          * @return string|array Formated value
 552          * @since 1.21
 553          */
 554         protected function formatParameterValue( $type, $value ) {
 555                 $saveLinkFlood = $this->linkFlood;
 556
 557                 switch ( strtolower( trim( $type ) ) ) {
 558                         case 'raw':
 559                                 $value = Message::rawParam( $value );
 560                                 break;
 561                         case 'list':
 562                                 $value = $this->context->getLanguage()->commaList( $value );
 563                                 break;
 564                         case 'msg':
 565                                 $value = $this->msg( $value )->text();
 566                                 break;
 567                         case 'msg-content':
 568                                 $value = $this->msg( $value )->inContentLanguage()->text();
 569                                 break;
 570                         case 'number':
 571                                 $value = Message::numParam( $value );
 572                                 break;
 573                         case 'user':
 574                                 $user = User::newFromName( $value );
 575                                 $value = $user->getName();
 576                                 break;
 577                         case 'user-link':
 578                                 $this->setShowUserToolLinks( false );
 579
 580                                 $user = User::newFromName( $value );
 581                                 $value = Message::rawParam( $this->makeUserLink( $user ) );
 582
 583                                 $this->setShowUserToolLinks( $saveLinkFlood );
 584                                 break;
 585                         case 'title':
 586                                 $title = Title::newFromText( $value );
 587                                 $value = $title->getPrefixedText();
 588                                 break;
 589                         case 'title-link':
 590                                 $title = Title::newFromText( $value );
 591                                 $value = Message::rawParam( $this->makePageLink( $title ) );
 592                                 break;
 593                         case 'plain':
 594                                 // Plain text, nothing to do
 595                         default:
 596                                 // Catch other types and use the old behavior (return as-is)
 597                 }
 598
 599                 return $value;
 600         }
 601
 602         /**
 603          * Helper to make a link to the page, taking the plaintext
 604          * value in consideration.
 605          * @param Title $title The page
 606          * @param array $parameters Query parameters
 607          * @param string|null $html Linktext of the link as raw html
 608          * @throws MWException
 609          * @return string
 610          */
 611         protected function makePageLink( Title $title = null, $parameters = [], $html = null ) {
 612                 if ( !$this->plaintext ) {
 613                         $link = Linker::link( $title, $html, [], $parameters );
 614                 } else {
 615                         if ( !$title instanceof Title ) {
 616                                 throw new MWException( "Expected title, got null" );
 617                         }
 618                         $link = '[[' . $title->getPrefixedText() . ']]';
 619                 }
 620
 621                 return $link;
 622         }
 623
 624         /**
 625          * Provides the name of the user who performed the log action.
 626          * Used as part of log action message or standalone, depending
 627          * which parts of the log entry has been hidden.
 628          * @return string
 629          */
 630         public function getPerformerElement() {
 631                 if ( $this->canView( LogPage::DELETED_USER ) ) {
 632                         $performer = $this->entry->getPerformer();
 633                         $element = $this->makeUserLink( $performer );
 634                         if ( $this->entry->isDeleted( LogPage::DELETED_USER ) ) {
 635                                 $element = $this->styleRestricedElement( $element );
 636                         }
 637                 } else {
 638                         $element = $this->getRestrictedElement( 'rev-deleted-user' );
 639                 }
 640
 641                 return $element;
 642         }
 643
 644         /**
 645          * Gets the user provided comment
 646          * @return string HTML
 647          */
 648         public function getComment() {
 649                 if ( $this->canView( LogPage::DELETED_COMMENT ) ) {
 650                         $comment = Linker::commentBlock( $this->entry->getComment() );
 651                         // No hard coded spaces thanx
 652                         $element = ltrim( $comment );
 653                         if ( $this->entry->isDeleted( LogPage::DELETED_COMMENT ) ) {
 654                                 $element = $this->styleRestricedElement( $element );
 655                         }
 656                 } else {
 657                         $element = $this->getRestrictedElement( 'rev-deleted-comment' );
 658                 }
 659
 660                 return $element;
 661         }
 662
 663         /**
 664          * Helper method for displaying restricted element.
 665          * @param string $message
 666          * @return string HTML or wiki text
 667          */
 668         protected function getRestrictedElement( $message ) {
 669                 if ( $this->plaintext ) {
 670                         return $this->msg( $message )->text();
 671                 }
 672
 673                 $content = $this->msg( $message )->escaped();
 674                 $attribs = [ 'class' => 'history-deleted' ];
 675
 676                 return Html::rawElement( 'span', $attribs, $content );
 677         }
 678
 679         /**
 680          * Helper method for styling restricted element.
 681          * @param string $content
 682          * @return string HTML or wiki text
 683          */
 684         protected function styleRestricedElement( $content ) {
 685                 if ( $this->plaintext ) {
 686                         return $content;
 687                 }
 688                 $attribs = [ 'class' => 'history-deleted' ];
 689
 690                 return Html::rawElement( 'span', $attribs, $content );
 691         }
 692
 693         /**
 694          * Shortcut for wfMessage which honors local context.
 695          * @param string $key
 696          * @return Message
 697          */
 698         protected function msg( $key ) {
 699                 return $this->context->msg( $key );
 700         }
 701
 702         protected function makeUserLink( User $user, $toolFlags = 0 ) {
 703                 if ( $this->plaintext ) {
 704                         $element = $user->getName();
 705                 } else {
 706                         $element = Linker::userLink(
 707                                 $user->getId(),
 708                                 $user->getName()
 709                         );
 710
 711                         if ( $this->linkFlood ) {
 712                                 $element .= Linker::userToolLinks(
 713                                         $user->getId(),
 714                                         $user->getName(),
 715                                         true, // redContribsWhenNoEdits
 716                                         $toolFlags,
 717                                         $user->getEditCount()
 718                                 );
 719                         }
 720                 }
 721
 722                 return $element;
 723         }
 724
 725         /**
 726          * @return array Array of titles that should be preloaded with LinkBatch
 727          */
 728         public function getPreloadTitles() {
 729                 return [];
 730         }
 731
 732         /**
 733          * @return array Output of getMessageParameters() for testing
 734          */
 735         public function getMessageParametersForTesting() {
 736                 // This function was added because getMessageParameters() is
 737                 // protected and a change from protected to public caused
 738                 // problems with extensions
 739                 return $this->getMessageParameters();
 740         }
 741
 742         /**
 743          * Get the array of parameters, converted from legacy format if necessary.
 744          * @since 1.25
 745          * @return array
 746          */
 747         protected function getParametersForApi() {
 748                 return $this->entry->getParameters();
 749         }
 750
 751         /**
 752          * Format parameters for API output
 753          *
 754          * The result array should generally map named keys to values. Index and
 755          * type should be omitted, e.g. "4::foo" should be returned as "foo" in the
 756          * output. Values should generally be unformatted.
 757          *
 758          * Renames or removals of keys besides from the legacy numeric format to
 759          * modern named style should be avoided. Any renames should be announced to
 760          * the mediawiki-api-announce mailing list.
 761          *
 762          * @since 1.25
 763          * @return array
 764          */
 765         public function formatParametersForApi() {
 766                 $logParams = [];
 767                 foreach ( $this->getParametersForApi() as $key => $value ) {
 768                         $vals = explode( ':', $key, 3 );
 769                         if ( count( $vals ) !== 3 ) {
 770                                 $logParams[$key] = $value;
 771                                 continue;
 772                         }
 773                         $logParams += $this->formatParameterValueForApi( $vals[2], $vals[1], $value );
 774                 }
 775                 ApiResult::setIndexedTagName( $logParams, 'param' );
 776                 ApiResult::setArrayType( $logParams, 'assoc' );
 777
 778                 return $logParams;
 779         }
 780
 781         /**
 782          * Format a single parameter value for API output
 783          *
 784          * @since 1.25
 785          * @param string $name
 786          * @param string $type
 787          * @param string $value
 788          * @return array
 789          */
 790         protected function formatParameterValueForApi( $name, $type, $value ) {
 791                 $type = strtolower( trim( $type ) );
 792                 switch ( $type ) {
 793                         case 'bool':
 794                                 $value = (bool)$value;
 795                                 break;
 796
 797                         case 'number':
 798                                 if ( ctype_digit( $value ) || is_int( $value ) ) {
 799                                         $value = (int)$value;
 800                                 } else {
 801                                         $value = (float)$value;
 802                                 }
 803                                 break;
 804
 805                         case 'array':
 806                         case 'assoc':
 807                         case 'kvp':
 808                                 if ( is_array( $value ) ) {
 809                                         ApiResult::setArrayType( $value, $type );
 810                                 }
 811                                 break;
 812
 813                         case 'timestamp':
 814                                 $value = wfTimestamp( TS_ISO_8601, $value );
 815                                 break;
 816
 817                         case 'msg':
 818                         case 'msg-content':
 819                                 $msg = $this->msg( $value );
 820                                 if ( $type === 'msg-content' ) {
 821                                         $msg->inContentLanguage();
 822                                 }
 823                                 $value = [];
 824                                 $value["{$name}_key"] = $msg->getKey();
 825                                 if ( $msg->getParams() ) {
 826                                         $value["{$name}_params"] = $msg->getParams();
 827                                 }
 828                                 $value["{$name}_text"] = $msg->text();
 829                                 return $value;
 830
 831                         case 'title':
 832                         case 'title-link':
 833                                 $title = Title::newFromText( $value );
 834                                 if ( $title ) {
 835                                         $value = [];
 836                                         ApiQueryBase::addTitleInfo( $value, $title, "{$name}_" );
 837                                 }
 838                                 return $value;
 839
 840                         case 'user':
 841                         case 'user-link':
 842                                 $user = User::newFromName( $value );
 843                                 if ( $user ) {
 844                                         $value = $user->getName();
 845                                 }
 846                                 break;
 847
 848                         default:
 849                                 // do nothing
 850                                 break;
 851                 }
 852
 853                 return [ $name => $value ];
 854         }
 855 }
 856
 857 /**
 858  * This class formats all log entries for log types
 859  * which have not been converted to the new system.
 860  * This is not about old log entries which store
 861  * parameters in a different format - the new
 862  * LogFormatter classes have code to support formatting
 863  * those too.
 864  * @since 1.19
 865  */
 866 class LegacyLogFormatter extends LogFormatter {
 867         /**
 868          * Backward compatibility for extension changing the comment from
 869          * the LogLine hook. This will be set by the first call on getComment(),
 870          * then it might be modified by the hook when calling getActionLinks(),
 871          * so that the modified value will be returned when calling getComment()
 872          * a second time.
 873          *
 874          * @var string|null
 875          */
 876         private $comment = null;
 877
 878         /**
 879          * Cache for the result of getActionLinks() so that it does not need to
 880          * run multiple times depending on the order that getComment() and
 881          * getActionLinks() are called.
 882          *
 883          * @var string|null
 884          */
 885         private $revert = null;
 886
 887         public function getComment() {
 888                 if ( $this->comment === null ) {
 889                         $this->comment = parent::getComment();
 890                 }
 891
 892                 // Make sure we execute the LogLine hook so that we immediately return
 893                 // the correct value.
 894                 if ( $this->revert === null ) {
 895                         $this->getActionLinks();
 896                 }
 897
 898                 return $this->comment;
 899         }
 900
 901         protected function getActionMessage() {
 902                 $entry = $this->entry;
 903                 $action = LogPage::actionText(
 904                         $entry->getType(),
 905                         $entry->getSubtype(),
 906                         $entry->getTarget(),
 907                         $this->plaintext ? null : $this->context->getSkin(),
 908                         (array)$entry->getParameters(),
 909                         !$this->plaintext // whether to filter [[]] links
 910                 );
 911
 912                 $performer = $this->getPerformerElement();
 913                 if ( !$this->irctext ) {
 914                         $sep = $this->msg( 'word-separator' );
 915                         $sep = $this->plaintext ? $sep->text() : $sep->escaped();
 916                         $action = $performer . $sep . $action;
 917                 }
 918
 919                 return $action;
 920         }
 921
 922         public function getActionLinks() {
 923                 if ( $this->revert !== null ) {
 924                         return $this->revert;
 925                 }
 926
 927                 if ( $this->entry->isDeleted( LogPage::DELETED_ACTION ) ) {
 928                         $this->revert = '';
 929                         return $this->revert;
 930                 }
 931
 932                 $title = $this->entry->getTarget();
 933                 $type = $this->entry->getType();
 934                 $subtype = $this->entry->getSubtype();
 935
 936                 // Do nothing. The implementation is handled by the hook modifiying the
 937                 // passed-by-ref parameters. This also changes the default value so that
 938                 // getComment() and getActionLinks() do not call them indefinitely.
 939                 $this->revert = '';
 940
 941                 // This is to populate the $comment member of this instance so that it
 942                 // can be modified when calling the hook just below.
 943                 if ( $this->comment === null ) {
 944                         $this->getComment();
 945                 }
 946
 947                 $params = $this->entry->getParameters();
 948
 949                 Hooks::run( 'LogLine', [ $type, $subtype, $title, $params,
 950                         &$this->comment, &$this->revert, $this->entry->getTimestamp() ] );
 951
 952                 return $this->revert;
 953         }
 954 }