includes/specials/SpecialUserrights.php

   1 <?php
   2 /**
   3  * Implements Special:Userrights
   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  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Special page to allow managing user group membership
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class UserrightsPage extends SpecialPage {
  30         # The target of the local right-adjuster's interest.  Can be gotten from
  31         # either a GET parameter or a subpage-style parameter, so have a member
  32         # variable for it.
  33         protected $mTarget;
  34         protected $isself = false;
  35
  36         public function __construct() {
  37                 parent::__construct( 'Userrights' );
  38         }
  39
  40         public function isRestricted() {
  41                 return true;
  42         }
  43
  44         public function userCanExecute( User $user ) {
  45                 return $this->userCanChangeRights( $user, false );
  46         }
  47
  48         public function userCanChangeRights( $user, $checkIfSelf = true ) {
  49                 $available = $this->changeableGroups();
  50                 if ( $user->getId() == 0 ) {
  51                         return false;
  52                 }
  53                 return !empty( $available['add'] )
  54                         || !empty( $available['remove'] )
  55                         || ( ( $this->isself || !$checkIfSelf ) &&
  56                                 ( !empty( $available['add-self'] )
  57                                         || !empty( $available['remove-self'] ) ) );
  58         }
  59
  60         /**
  61          * Manage forms to be shown according to posted data.
  62          * Depending on the submit button used, call a form or a save function.
  63          *
  64          * @param $par Mixed: string if any subpage provided, else null
  65          * @throws UserBlockedError|PermissionsError
  66          */
  67         public function execute( $par ) {
  68                 // If the visitor doesn't have permissions to assign or remove
  69                 // any groups, it's a bit silly to give them the user search prompt.
  70
  71                 $user = $this->getUser();
  72
  73                 /*
  74                  * If the user is blocked and they only have "partial" access
  75                  * (e.g. they don't have the userrights permission), then don't
  76                  * allow them to use Special:UserRights.
  77                  */
  78                 if( $user->isBlocked() && !$user->isAllowed( 'userrights' ) ) {
  79                         throw new UserBlockedError( $user->getBlock() );
  80                 }
  81
  82                 $request = $this->getRequest();
  83
  84                 if( $par !== null ) {
  85                         $this->mTarget = $par;
  86                 } else {
  87                         $this->mTarget = $request->getVal( 'user' );
  88                 }
  89
  90                 $available = $this->changeableGroups();
  91
  92                 if ( $this->mTarget === null ) {
  93                         /*
  94                          * If the user specified no target, and they can only
  95                          * edit their own groups, automatically set them as the
  96                          * target.
  97                          */
  98                         if ( !count( $available['add'] ) && !count( $available['remove'] ) )
  99                                 $this->mTarget = $user->getName();
 100                 }
 101
 102                 if ( User::getCanonicalName( $this->mTarget ) == $user->getName() ) {
 103                         $this->isself = true;
 104                 }
 105
 106                 if( !$this->userCanChangeRights( $user, true ) ) {
 107                         // @todo FIXME: There may be intermediate groups we can mention.
 108                         $msg = $user->isAnon() ? 'userrights-nologin' : 'userrights-notallowed';
 109                         throw new PermissionsError( null, array( array( $msg ) ) );
 110                 }
 111
 112                 $this->checkReadOnly();
 113
 114                 $this->setHeaders();
 115                 $this->outputHeader();
 116
 117                 $out = $this->getOutput();
 118                 $out->addModuleStyles( 'mediawiki.special' );
 119
 120                 // show the general form
 121                 if ( count( $available['add'] ) || count( $available['remove'] ) ) {
 122                         $this->switchForm();
 123                 }
 124
 125                 if( $request->wasPosted() ) {
 126                         // save settings
 127                         if( $request->getCheck( 'saveusergroups' ) ) {
 128                                 $reason = $request->getVal( 'user-reason' );
 129                                 $tok = $request->getVal( 'wpEditToken' );
 130                                 if( $user->matchEditToken( $tok, $this->mTarget ) ) {
 131                                         $this->saveUserGroups(
 132                                                 $this->mTarget,
 133                                                 $reason
 134                                         );
 135
 136                                         $out->redirect( $this->getSuccessURL() );
 137                                         return;
 138                                 }
 139                         }
 140                 }
 141
 142                 // show some more forms
 143                 if( $this->mTarget !== null ) {
 144                         $this->editUserGroupsForm( $this->mTarget );
 145                 }
 146         }
 147
 148         function getSuccessURL() {
 149                 return $this->getTitle( $this->mTarget )->getFullURL();
 150         }
 151
 152         /**
 153          * Save user groups changes in the database.
 154          * Data comes from the editUserGroupsForm() form function
 155          *
 156          * @param $username String: username to apply changes to.
 157          * @param $reason String: reason for group change
 158          * @return null
 159          */
 160         function saveUserGroups( $username, $reason = '' ) {
 161                 $status = $this->fetchUser( $username );
 162                 if( !$status->isOK() ) {
 163                         $this->getOutput()->addWikiText( $status->getWikiText() );
 164                         return;
 165                 } else {
 166                         $user = $status->value;
 167                 }
 168
 169                 $allgroups = $this->getAllGroups();
 170                 $addgroup = array();
 171                 $removegroup = array();
 172
 173                 // This could possibly create a highly unlikely race condition if permissions are changed between
 174                 //  when the form is loaded and when the form is saved. Ignoring it for the moment.
 175                 foreach ( $allgroups as $group ) {
 176                         // We'll tell it to remove all unchecked groups, and add all checked groups.
 177                         // Later on, this gets filtered for what can actually be removed
 178                         if ( $this->getRequest()->getCheck( "wpGroup-$group" ) ) {
 179                                 $addgroup[] = $group;
 180                         } else {
 181                                 $removegroup[] = $group;
 182                         }
 183                 }
 184
 185                 $this->doSaveUserGroups( $user, $addgroup, $removegroup, $reason );
 186         }
 187
 188         /**
 189          * Save user groups changes in the database.
 190          *
 191          * @param $user User object
 192          * @param $add Array of groups to add
 193          * @param $remove Array of groups to remove
 194          * @param $reason String: reason for group change
 195          * @return Array: Tuple of added, then removed groups
 196          */
 197         function doSaveUserGroups( $user, $add, $remove, $reason = '' ) {
 198                 // Validate input set...
 199                 $isself = ( $user->getName() == $this->getUser()->getName() );
 200                 $groups = $user->getGroups();
 201                 $changeable = $this->changeableGroups();
 202                 $addable = array_merge( $changeable['add'], $isself ? $changeable['add-self'] : array() );
 203                 $removable = array_merge( $changeable['remove'], $isself ? $changeable['remove-self'] : array() );
 204
 205                 $remove = array_unique(
 206                         array_intersect( (array)$remove, $removable, $groups ) );
 207                 $add = array_unique( array_diff(
 208                         array_intersect( (array)$add, $addable ),
 209                         $groups )
 210                 );
 211
 212                 $oldGroups = $user->getGroups();
 213                 $newGroups = $oldGroups;
 214
 215                 // remove then add groups
 216                 if( $remove ) {
 217                         $newGroups = array_diff( $newGroups, $remove );
 218                         foreach( $remove as $group ) {
 219                                 $user->removeGroup( $group );
 220                         }
 221                 }
 222                 if( $add ) {
 223                         $newGroups = array_merge( $newGroups, $add );
 224                         foreach( $add as $group ) {
 225                                 $user->addGroup( $group );
 226                         }
 227                 }
 228                 $newGroups = array_unique( $newGroups );
 229
 230                 // Ensure that caches are cleared
 231                 $user->invalidateCache();
 232
 233                 wfDebug( 'oldGroups: ' . print_r( $oldGroups, true ) );
 234                 wfDebug( 'newGroups: ' . print_r( $newGroups, true ) );
 235                 wfRunHooks( 'UserRights', array( &$user, $add, $remove ) );
 236
 237                 if( $newGroups != $oldGroups ) {
 238                         $this->addLogEntry( $user, $oldGroups, $newGroups, $reason );
 239                 }
 240                 return array( $add, $remove );
 241         }
 242
 243         /**
 244          * Add a rights log entry for an action.
 245          */
 246         function addLogEntry( $user, $oldGroups, $newGroups, $reason ) {
 247                 $logEntry = new ManualLogEntry( 'rights', 'rights' );
 248                 $logEntry->setPerformer( $this->getUser() );
 249                 $logEntry->setTarget( $user->getUserPage() );
 250                 $logEntry->setComment( $reason );
 251                 $logEntry->setParameters( array(
 252                         '4::oldgroups' => $oldGroups,
 253                         '5::newgroups' => $newGroups,
 254                 ) );
 255                 $logid = $logEntry->insert();
 256                 $logEntry->publish( $logid );
 257         }
 258
 259         /**
 260          * Edit user groups membership
 261          * @param $username String: name of the user.
 262          */
 263         function editUserGroupsForm( $username ) {
 264                 $status = $this->fetchUser( $username );
 265                 if( !$status->isOK() ) {
 266                         $this->getOutput()->addWikiText( $status->getWikiText() );
 267                         return;
 268                 } else {
 269                         $user = $status->value;
 270                 }
 271
 272                 $groups = $user->getGroups();
 273
 274                 $this->showEditUserGroupsForm( $user, $groups );
 275
 276                 // This isn't really ideal logging behavior, but let's not hide the
 277                 // interwiki logs if we're using them as is.
 278                 $this->showLogFragment( $user, $this->getOutput() );
 279         }
 280
 281         /**
 282          * Normalize the input username, which may be local or remote, and
 283          * return a user (or proxy) object for manipulating it.
 284          *
 285          * Side effects: error output for invalid access
 286          * @return Status object
 287          */
 288         public function fetchUser( $username ) {
 289                 global $wgUserrightsInterwikiDelimiter;
 290
 291                 $parts = explode( $wgUserrightsInterwikiDelimiter, $username );
 292                 if( count( $parts ) < 2 ) {
 293                         $name = trim( $username );
 294                         $database = '';
 295                 } else {
 296                         list( $name, $database ) = array_map( 'trim', $parts );
 297
 298                         if( $database == wfWikiID() ) {
 299                                 $database = '';
 300                         } else {
 301                                 if( !$this->getUser()->isAllowed( 'userrights-interwiki' ) ) {
 302                                         return Status::newFatal( 'userrights-no-interwiki' );
 303                                 }
 304                                 if( !UserRightsProxy::validDatabase( $database ) ) {
 305                                         return Status::newFatal( 'userrights-nodatabase', $database );
 306                                 }
 307                         }
 308                 }
 309
 310                 if( $name === '' ) {
 311                         return Status::newFatal( 'nouserspecified' );
 312                 }
 313
 314                 if( $name[0] == '#' ) {
 315                         // Numeric ID can be specified...
 316                         // We'll do a lookup for the name internally.
 317                         $id = intval( substr( $name, 1 ) );
 318
 319                         if( $database == '' ) {
 320                                 $name = User::whoIs( $id );
 321                         } else {
 322                                 $name = UserRightsProxy::whoIs( $database, $id );
 323                         }
 324
 325                         if( !$name ) {
 326                                 return Status::newFatal( 'noname' );
 327                         }
 328                 } else {
 329                         $name = User::getCanonicalName( $name );
 330                         if( $name === false ) {
 331                                 // invalid name
 332                                 return Status::newFatal( 'nosuchusershort', $username );
 333                         }
 334                 }
 335
 336                 if( $database == '' ) {
 337                         $user = User::newFromName( $name );
 338                 } else {
 339                         $user = UserRightsProxy::newFromName( $database, $name );
 340                 }
 341
 342                 if( !$user || $user->isAnon() ) {
 343                         return Status::newFatal( 'nosuchusershort', $username );
 344                 }
 345
 346                 return Status::newGood( $user );
 347         }
 348
 349         function makeGroupNameList( $ids ) {
 350                 if( empty( $ids ) ) {
 351                         return $this->msg( 'rightsnone' )->inContentLanguage()->text();
 352                 } else {
 353                         return implode( ', ', $ids );
 354                 }
 355         }
 356
 357         /**
 358          * Make a list of group names to be stored as parameter for log entries
 359          *
 360          * @deprecated in 1.21; use LogFormatter instead.
 361          * @param $ids array
 362          * @return string
 363          */
 364         function makeGroupNameListForLog( $ids ) {
 365                 wfDeprecated( __METHOD__, '1.21' );
 366
 367                 if( empty( $ids ) ) {
 368                         return '';
 369                 } else {
 370                         return $this->makeGroupNameList( $ids );
 371                 }
 372         }
 373
 374         /**
 375          * Output a form to allow searching for a user
 376          */
 377         function switchForm() {
 378                 global $wgScript;
 379                 $this->getOutput()->addHTML(
 380                         Html::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'name' => 'uluser', 'id' => 'mw-userrights-form1' ) ) .
 381                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
 382                         Xml::fieldset( $this->msg( 'userrights-lookup-user' )->text() ) .
 383                         Xml::inputLabel( $this->msg( 'userrights-user-editname' )->text(), 'user', 'username', 30, str_replace( '_', ' ', $this->mTarget ) ) . ' ' .
 384                         Xml::submitButton( $this->msg( 'editusergroup' )->text() ) .
 385                         Html::closeElement( 'fieldset' ) .
 386                         Html::closeElement( 'form' ) . "\n"
 387                 );
 388         }
 389
 390         /**
 391          * Go through used and available groups and return the ones that this
 392          * form will be able to manipulate based on the current user's system
 393          * permissions.
 394          *
 395          * @param $groups Array: list of groups the given user is in
 396          * @return Array:  Tuple of addable, then removable groups
 397          */
 398         protected function splitGroups( $groups ) {
 399                 list( $addable, $removable, $addself, $removeself ) = array_values( $this->changeableGroups() );
 400
 401                 $removable = array_intersect(
 402                         array_merge( $this->isself ? $removeself : array(), $removable ),
 403                         $groups
 404                 ); // Can't remove groups the user doesn't have
 405                 $addable = array_diff(
 406                         array_merge( $this->isself ? $addself : array(), $addable ),
 407                         $groups
 408                 ); // Can't add groups the user does have
 409
 410                 return array( $addable, $removable );
 411         }
 412
 413         /**
 414          * Show the form to edit group memberships.
 415          *
 416          * @param $user      User or UserRightsProxy you're editing
 417          * @param $groups    Array:  Array of groups the user is in
 418          */
 419         protected function showEditUserGroupsForm( $user, $groups ) {
 420                 $list = array();
 421                 $membersList = array();
 422                 foreach( $groups as $group ) {
 423                         $list[] = self::buildGroupLink( $group );
 424                         $membersList[] = self::buildGroupMemberLink( $group );
 425                 }
 426
 427                 $autoList = array();
 428                 $autoMembersList = array();
 429                 if ( $user instanceof User ) {
 430                         foreach( Autopromote::getAutopromoteGroups( $user ) as $group ) {
 431                                 $autoList[] = self::buildGroupLink( $group );
 432                                 $autoMembersList[] = self::buildGroupMemberLink( $group );
 433                         }
 434                 }
 435
 436                 $language = $this->getLanguage();
 437                 $displayedList = $this->msg( 'userrights-groupsmember-type',
 438                         $language->listToText( $list ),
 439                         $language->listToText( $membersList )
 440                 )->plain();
 441                 $displayedAutolist = $this->msg( 'userrights-groupsmember-type',
 442                         $language->listToText( $autoList ),
 443                         $language->listToText( $autoMembersList )
 444                 )->plain();
 445
 446                 $grouplist = '';
 447                 $count = count( $list );
 448                 if ( $count > 0 ) {
 449                         $grouplist = $this->msg( 'userrights-groupsmember', $count, $user->getName() )->parse();
 450                         $grouplist = '<p>' . $grouplist  . ' ' . $displayedList . "</p>\n";
 451                 }
 452                 $count = count( $autoList );
 453                 if ( $count > 0 ) {
 454                         $autogrouplistintro = $this->msg( 'userrights-groupsmember-auto', $count, $user->getName() )->parse();
 455                         $grouplist .= '<p>' . $autogrouplistintro  . ' ' . $displayedAutolist . "</p>\n";
 456                 }
 457
 458                 $userToolLinks = Linker::userToolLinks(
 459                                 $user->getId(),
 460                                 $user->getName(),
 461                                 false, /* default for redContribsWhenNoEdits */
 462                                 Linker::TOOL_LINKS_EMAIL /* Add "send e-mail" link */
 463                 );
 464
 465                 $this->getOutput()->addHTML(
 466                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL(), 'name' => 'editGroup', 'id' => 'mw-userrights-form2' ) ) .
 467                         Html::hidden( 'user', $this->mTarget ) .
 468                         Html::hidden( 'wpEditToken', $this->getUser()->getEditToken( $this->mTarget ) ) .
 469                         Xml::openElement( 'fieldset' ) .
 470                         Xml::element( 'legend', array(), $this->msg( 'userrights-editusergroup', $user->getName() )->text() ) .
 471                         $this->msg( 'editinguser' )->params( wfEscapeWikiText( $user->getName() ) )->rawParams( $userToolLinks )->parse() .
 472                         $this->msg( 'userrights-groups-help', $user->getName() )->parse() .
 473                         $grouplist .
 474                         Xml::tags( 'p', null, $this->groupCheckboxes( $groups, $user ) ) .
 475                         Xml::openElement( 'table', array( 'id' => 'mw-userrights-table-outer' ) ) .
 476                                 "<tr>
 477                                         <td class='mw-label'>" .
 478                                                 Xml::label( $this->msg( 'userrights-reason' )->text(), 'wpReason' ) .
 479                                         "</td>
 480                                         <td class='mw-input'>" .
 481                                                 Xml::input( 'user-reason', 60, $this->getRequest()->getVal( 'user-reason', false ),
 482                                                         array( 'id' => 'wpReason', 'maxlength' => 255 ) ) .
 483                                         "</td>
 484                                 </tr>
 485                                 <tr>
 486                                         <td></td>
 487                                         <td class='mw-submit'>" .
 488                                                 Xml::submitButton( $this->msg( 'saveusergroups' )->text(),
 489                                                         array( 'name' => 'saveusergroups' ) + Linker::tooltipAndAccesskeyAttribs( 'userrights-set' ) ) .
 490                                         "</td>
 491                                 </tr>" .
 492                         Xml::closeElement( 'table' ) . "\n" .
 493                         Xml::closeElement( 'fieldset' ) .
 494                         Xml::closeElement( 'form' ) . "\n"
 495                 );
 496         }
 497
 498         /**
 499          * Format a link to a group description page
 500          *
 501          * @param $group string
 502          * @return string
 503          */
 504         private static function buildGroupLink( $group ) {
 505                 return User::makeGroupLinkHtml( $group, User::getGroupName( $group ) );
 506         }
 507
 508         /**
 509          * Format a link to a group member description page
 510          *
 511          * @param $group string
 512          * @return string
 513          */
 514         private static function buildGroupMemberLink( $group ) {
 515                 return User::makeGroupLinkHtml( $group, User::getGroupMember( $group ) );
 516         }
 517
 518         /**
 519          * Returns an array of all groups that may be edited
 520          * @return array Array of groups that may be edited.
 521          */
 522         protected static function getAllGroups() {
 523                 return User::getAllGroups();
 524         }
 525
 526         /**
 527          * Adds a table with checkboxes where you can select what groups to add/remove
 528          *
 529          * @todo Just pass the username string?
 530          * @param $usergroups Array: groups the user belongs to
 531          * @param $user User a user object
 532          * @return string XHTML table element with checkboxes
 533          */
 534         private function groupCheckboxes( $usergroups, $user ) {
 535                 $allgroups = $this->getAllGroups();
 536                 $ret = '';
 537
 538                 # Put all column info into an associative array so that extensions can
 539                 # more easily manage it.
 540                 $columns = array( 'unchangeable' => array(), 'changeable' => array() );
 541
 542                 foreach( $allgroups as $group ) {
 543                         $set = in_array( $group, $usergroups );
 544                         # Should the checkbox be disabled?
 545                         $disabled = !(
 546                                 ( $set && $this->canRemove( $group ) ) ||
 547                                 ( !$set && $this->canAdd( $group ) ) );
 548                         # Do we need to point out that this action is irreversible?
 549                         $irreversible = !$disabled && (
 550                                 ( $set && !$this->canAdd( $group ) ) ||
 551                                 ( !$set && !$this->canRemove( $group ) ) );
 552
 553                         $checkbox = array(
 554                                 'set' => $set,
 555                                 'disabled' => $disabled,
 556                                 'irreversible' => $irreversible
 557                         );
 558
 559                         if( $disabled ) {
 560                                 $columns['unchangeable'][$group] = $checkbox;
 561                         } else {
 562                                 $columns['changeable'][$group] = $checkbox;
 563                         }
 564                 }
 565
 566                 # Build the HTML table
 567                 $ret .= Xml::openElement( 'table', array( 'class' => 'mw-userrights-groups' ) ) .
 568                         "<tr>\n";
 569                 foreach( $columns as $name => $column ) {
 570                         if( $column === array() )
 571                                 continue;
 572                         $ret .= Xml::element( 'th', null, $this->msg( 'userrights-' . $name . '-col', count( $column ) )->text() );
 573                 }
 574                 $ret .= "</tr>\n<tr>\n";
 575                 foreach( $columns as $column ) {
 576                         if( $column === array() )
 577                                 continue;
 578                         $ret .= "\t<td style='vertical-align:top;'>\n";
 579                         foreach( $column as $group => $checkbox ) {
 580                                 $attr = $checkbox['disabled'] ? array( 'disabled' => 'disabled' ) : array();
 581
 582                                 $member = User::getGroupMember( $group, $user->getName() );
 583                                 if ( $checkbox['irreversible'] ) {
 584                                         $text = $this->msg( 'userrights-irreversible-marker', $member )->escaped();
 585                                 } else {
 586                                         $text = htmlspecialchars( $member );
 587                                 }
 588                                 $checkboxHtml = Xml::checkLabel( $text, "wpGroup-" . $group,
 589                                         "wpGroup-" . $group, $checkbox['set'], $attr );
 590                                 $ret .= "\t\t" . ( $checkbox['disabled']
 591                                         ? Xml::tags( 'span', array( 'class' => 'mw-userrights-disabled' ), $checkboxHtml )
 592                                         : $checkboxHtml
 593                                 ) . "<br />\n";
 594                         }
 595                         $ret .= "\t</td>\n";
 596                 }
 597                 $ret .= Xml::closeElement( 'tr' ) . Xml::closeElement( 'table' );
 598
 599                 return $ret;
 600         }
 601
 602         /**
 603          * @param  $group String: the name of the group to check
 604          * @return bool Can we remove the group?
 605          */
 606         private function canRemove( $group ) {
 607                 // $this->changeableGroups()['remove'] doesn't work, of course. Thanks,
 608                 // PHP.
 609                 $groups = $this->changeableGroups();
 610                 return in_array( $group, $groups['remove'] ) || ( $this->isself && in_array( $group, $groups['remove-self'] ) );
 611         }
 612
 613         /**
 614          * @param $group string: the name of the group to check
 615          * @return bool Can we add the group?
 616          */
 617         private function canAdd( $group ) {
 618                 $groups = $this->changeableGroups();
 619                 return in_array( $group, $groups['add'] ) || ( $this->isself && in_array( $group, $groups['add-self'] ) );
 620         }
 621
 622         /**
 623          * Returns $this->getUser()->changeableGroups()
 624          *
 625          * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ), 'add-self' => array( addablegroups to self ), 'remove-self' => array( removable groups from self ) )
 626          */
 627         function changeableGroups() {
 628                 return $this->getUser()->changeableGroups();
 629         }
 630
 631         /**
 632          * Show a rights log fragment for the specified user
 633          *
 634          * @param $user User to show log for
 635          * @param $output OutputPage to use
 636          */
 637         protected function showLogFragment( $user, $output ) {
 638                 $rightsLogPage = new LogPage( 'rights' );
 639                 $output->addHTML( Xml::element( 'h2', null, $rightsLogPage->getName()->text() ) );
 640                 LogEventsList::showLogExtract( $output, 'rights', $user->getUserPage() );
 641         }
 642 }