includes/specials/SpecialUserrights.php

   1 <?php
   2 /**
   3  * Special page to allow managing user group membership
   4  *
   5  * @file
   6  * @ingroup SpecialPage
   7  */
   8
   9 /**
  10  * A class to manage user levels rights.
  11  * @ingroup SpecialPage
  12  */
  13 class UserrightsPage extends SpecialPage {
  14         # The target of the local right-adjuster's interest.  Can be gotten from
  15         # either a GET parameter or a subpage-style parameter, so have a member
  16         # variable for it.
  17         protected $mTarget;
  18         protected $isself = false;
  19
  20         public function __construct() {
  21                 parent::__construct( 'Userrights' );
  22         }
  23
  24         public function isRestricted() {
  25                 return true;
  26         }
  27
  28         public function userCanExecute( $user ) {
  29                 return $this->userCanChangeRights( $user, false );
  30         }
  31
  32         public function userCanChangeRights( $user, $checkIfSelf = true ) {
  33                 $available = $this->changeableGroups();
  34                 return !empty( $available['add'] )
  35                         or !empty( $available['remove'] )
  36                         or ( ( $this->isself || !$checkIfSelf ) and
  37                                 (!empty( $available['add-self'] )
  38                                  or !empty( $available['remove-self'] )));
  39         }
  40
  41         /**
  42          * Manage forms to be shown according to posted data.
  43          * Depending on the submit button used, call a form or a save function.
  44          *
  45          * @param $par Mixed: string if any subpage provided, else null
  46          */
  47         function execute( $par ) {
  48                 // If the visitor doesn't have permissions to assign or remove
  49                 // any groups, it's a bit silly to give them the user search prompt.
  50                 global $wgUser, $wgRequest;
  51
  52                 if( $par ) {
  53                         $this->mTarget = $par;
  54                 } else {
  55                         $this->mTarget = $wgRequest->getVal( 'user' );
  56                 }
  57
  58                 if (!$this->mTarget) {
  59                         /*
  60                          * If the user specified no target, and they can only
  61                          * edit their own groups, automatically set them as the
  62                          * target.
  63                          */
  64                         $available = $this->changeableGroups();
  65                         if (empty($available['add']) && empty($available['remove']))
  66                                 $this->mTarget = $wgUser->getName();
  67                 }
  68
  69                 if ($this->mTarget == $wgUser->getName())
  70                         $this->isself = true;
  71
  72                 if( !$this->userCanChangeRights( $wgUser, true ) ) {
  73                         // fixme... there may be intermediate groups we can mention.
  74                         global $wgOut;
  75                         $wgOut->showPermissionsErrorPage( array(
  76                                 $wgUser->isAnon()
  77                                         ? 'userrights-nologin'
  78                                         : 'userrights-notallowed' ) );
  79                         return;
  80                 }
  81
  82                 if ( wfReadOnly() ) {
  83                         global $wgOut;
  84                         $wgOut->readOnlyPage();
  85                         return;
  86                 }
  87
  88                 $this->outputHeader();
  89
  90                 $this->setHeaders();
  91
  92                 // show the general form
  93                 $this->switchForm();
  94
  95                 if( $wgRequest->wasPosted() ) {
  96                         // save settings
  97                         if( $wgRequest->getCheck( 'saveusergroups' ) ) {
  98                                 $reason = $wgRequest->getVal( 'user-reason' );
  99                                 $tok = $wgRequest->getVal( 'wpEditToken' );
 100                                 if( $wgUser->matchEditToken( $tok, $this->mTarget ) ) {
 101                                         $this->saveUserGroups(
 102                                                 $this->mTarget,
 103                                                 $reason
 104                                         );
 105
 106                                         global $wgOut;
 107
 108                                         $url = $this->getSuccessURL();
 109                                         $wgOut->redirect( $url );
 110                                         return;
 111                                 }
 112                         }
 113                 }
 114
 115                 // show some more forms
 116                 if( $this->mTarget ) {
 117                         $this->editUserGroupsForm( $this->mTarget );
 118                 }
 119         }
 120
 121         function getSuccessURL() {
 122                 return $this->getTitle( $this->mTarget )->getFullURL();
 123         }
 124
 125         /**
 126          * Save user groups changes in the database.
 127          * Data comes from the editUserGroupsForm() form function
 128          *
 129          * @param $username String: username to apply changes to.
 130          * @param $reason String: reason for group change
 131          * @return null
 132          */
 133         function saveUserGroups( $username, $reason = '') {
 134                 global $wgRequest, $wgUser, $wgGroupsAddToSelf, $wgGroupsRemoveFromSelf;
 135
 136                 $user = $this->fetchUser( $username );
 137                 if( !$user ) {
 138                         return;
 139                 }
 140
 141                 $allgroups = $this->getAllGroups();
 142                 $addgroup = array();
 143                 $removegroup = array();
 144
 145                 // This could possibly create a highly unlikely race condition if permissions are changed between
 146                 //  when the form is loaded and when the form is saved. Ignoring it for the moment.
 147                 foreach ($allgroups as $group) {
 148                         // We'll tell it to remove all unchecked groups, and add all checked groups.
 149                         // Later on, this gets filtered for what can actually be removed
 150                         if ($wgRequest->getCheck( "wpGroup-$group" )) {
 151                                 $addgroup[] = $group;
 152                         } else {
 153                                 $removegroup[] = $group;
 154                         }
 155                 }
 156
 157                 // Validate input set...
 158                 $changeable = $this->changeableGroups();
 159                 $addable = array_merge( $changeable['add'], $this->isself ? $changeable['add-self'] : array() );
 160                 $removable = array_merge( $changeable['remove'], $this->isself ? $changeable['remove-self'] : array() );
 161
 162                 $removegroup = array_unique(
 163                         array_intersect( (array)$removegroup, $removable ) );
 164                 $addgroup = array_unique(
 165                         array_intersect( (array)$addgroup, $addable ) );
 166
 167                 $oldGroups = $user->getGroups();
 168                 $newGroups = $oldGroups;
 169                 // remove then add groups
 170                 if( $removegroup ) {
 171                         $newGroups = array_diff($newGroups, $removegroup);
 172                         foreach( $removegroup as $group ) {
 173                                 $user->removeGroup( $group );
 174                         }
 175                 }
 176                 if( $addgroup ) {
 177                         $newGroups = array_merge($newGroups, $addgroup);
 178                         foreach( $addgroup as $group ) {
 179                                 $user->addGroup( $group );
 180                         }
 181                 }
 182                 $newGroups = array_unique( $newGroups );
 183
 184                 // Ensure that caches are cleared
 185                 $user->invalidateCache();
 186
 187                 wfDebug( 'oldGroups: ' . print_r( $oldGroups, true ) );
 188                 wfDebug( 'newGroups: ' . print_r( $newGroups, true ) );
 189                 if( $user instanceof User ) {
 190                         // hmmm
 191                         wfRunHooks( 'UserRights', array( &$user, $addgroup, $removegroup ) );
 192                 }
 193
 194                 if( $newGroups != $oldGroups ) {
 195                         $this->addLogEntry( $user, $oldGroups, $newGroups );
 196                 }
 197         }
 198
 199         /**
 200          * Add a rights log entry for an action.
 201          */
 202         function addLogEntry( $user, $oldGroups, $newGroups ) {
 203                 global $wgRequest;
 204                 $log = new LogPage( 'rights' );
 205
 206                 $log->addEntry( 'rights',
 207                         $user->getUserPage(),
 208                         $wgRequest->getText( 'user-reason' ),
 209                         array(
 210                                 $this->makeGroupNameListForLog( $oldGroups ),
 211                                 $this->makeGroupNameListForLog( $newGroups )
 212                         )
 213                 );
 214         }
 215
 216         /**
 217          * Edit user groups membership
 218          * @param $username String: name of the user.
 219          */
 220         function editUserGroupsForm( $username ) {
 221                 global $wgOut;
 222
 223                 $user = $this->fetchUser( $username );
 224                 if( !$user ) {
 225                         return;
 226                 }
 227
 228                 $groups = $user->getGroups();
 229
 230                 $this->showEditUserGroupsForm( $user, $groups );
 231
 232                 // This isn't really ideal logging behavior, but let's not hide the
 233                 // interwiki logs if we're using them as is.
 234                 $this->showLogFragment( $user, $wgOut );
 235         }
 236
 237         /**
 238          * Normalize the input username, which may be local or remote, and
 239          * return a user (or proxy) object for manipulating it.
 240          *
 241          * Side effects: error output for invalid access
 242          * @return mixed User, UserRightsProxy, or null
 243          */
 244         function fetchUser( $username ) {
 245                 global $wgOut, $wgUser, $wgUserrightsInterwikiDelimiter;
 246
 247                 $parts = explode( $wgUserrightsInterwikiDelimiter, $username );
 248                 if( count( $parts ) < 2 ) {
 249                         $name = trim( $username );
 250                         $database = '';
 251                 } else {
 252                         list( $name, $database ) = array_map( 'trim', $parts );
 253
 254                         if( !$wgUser->isAllowed( 'userrights-interwiki' ) ) {
 255                                 $wgOut->addWikiMsg( 'userrights-no-interwiki' );
 256                                 return null;
 257                         }
 258                         if( !UserRightsProxy::validDatabase( $database ) ) {
 259                                 $wgOut->addWikiMsg( 'userrights-nodatabase', $database );
 260                                 return null;
 261                         }
 262                 }
 263
 264                 if( $name == '' ) {
 265                         $wgOut->addWikiMsg( 'nouserspecified' );
 266                         return false;
 267                 }
 268
 269                 if( $name{0} == '#' ) {
 270                         // Numeric ID can be specified...
 271                         // We'll do a lookup for the name internally.
 272                         $id = intval( substr( $name, 1 ) );
 273
 274                         if( $database == '' ) {
 275                                 $name = User::whoIs( $id );
 276                         } else {
 277                                 $name = UserRightsProxy::whoIs( $database, $id );
 278                         }
 279
 280                         if( !$name ) {
 281                                 $wgOut->addWikiMsg( 'noname' );
 282                                 return null;
 283                         }
 284                 }
 285
 286                 if( $database == '' ) {
 287                         $user = User::newFromName( $name );
 288                 } else {
 289                         $user = UserRightsProxy::newFromName( $database, $name );
 290                 }
 291
 292                 if( !$user || $user->isAnon() ) {
 293                         $wgOut->addWikiMsg( 'nosuchusershort', $username );
 294                         return null;
 295                 }
 296
 297                 return $user;
 298         }
 299
 300         function makeGroupNameList( $ids ) {
 301                 if( empty( $ids ) ) {
 302                         return wfMsgForContent( 'rightsnone' );
 303                 } else {
 304                         return implode( ', ', $ids );
 305                 }
 306         }
 307
 308         function makeGroupNameListForLog( $ids ) {
 309                 if( empty( $ids ) ) {
 310                         return '';
 311                 } else {
 312                         return $this->makeGroupNameList( $ids );
 313                 }
 314         }
 315
 316         /**
 317          * Output a form to allow searching for a user
 318          */
 319         function switchForm() {
 320                 global $wgOut, $wgScript;
 321                 $wgOut->addHTML(
 322                         Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'name' => 'uluser', 'id' => 'mw-userrights-form1' ) ) .
 323                         Xml::hidden( 'title',  $this->getTitle()->getPrefixedText() ) .
 324                         Xml::openElement( 'fieldset' ) .
 325                         Xml::element( 'legend', array(), wfMsg( 'userrights-lookup-user' ) ) .
 326                         Xml::inputLabel( wfMsg( 'userrights-user-editname' ), 'user', 'username', 30, $this->mTarget ) . ' ' .
 327                         Xml::submitButton( wfMsg( 'editusergroup' ) ) .
 328                         Xml::closeElement( 'fieldset' ) .
 329                         Xml::closeElement( 'form' ) . "\n"
 330                 );
 331         }
 332
 333         /**
 334          * Go through used and available groups and return the ones that this
 335          * form will be able to manipulate based on the current user's system
 336          * permissions.
 337          *
 338          * @param $groups Array: list of groups the given user is in
 339          * @return Array:  Tuple of addable, then removable groups
 340          */
 341         protected function splitGroups( $groups ) {
 342                 list($addable, $removable, $addself, $removeself) = array_values( $this->changeableGroups() );
 343
 344                 $removable = array_intersect(
 345                                 array_merge( $this->isself ? $removeself : array(), $removable ),
 346                                 $groups ); // Can't remove groups the user doesn't have
 347                 $addable   = array_diff(
 348                                 array_merge( $this->isself ? $addself : array(), $addable ),
 349                                 $groups ); // Can't add groups the user does have
 350
 351                 return array( $addable, $removable );
 352         }
 353
 354         /**
 355          * Show the form to edit group memberships.
 356          *
 357          * @param $user      User or UserRightsProxy you're editing
 358          * @param $groups    Array:  Array of groups the user is in
 359          */
 360         protected function showEditUserGroupsForm( $user, $groups ) {
 361                 global $wgOut, $wgUser, $wgLang;
 362
 363                 $list = array();
 364                 foreach( $groups as $group )
 365                         $list[] = self::buildGroupLink( $group );
 366
 367                 $grouplist = '';
 368                 if( count( $list ) > 0 ) {
 369                         $grouplist = wfMsgHtml( 'userrights-groupsmember' );
 370                         $grouplist = '<p>' . $grouplist  . ' ' . $wgLang->listToText( $list ) . '</p>';
 371                 }
 372                 $wgOut->addHTML(
 373                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL(), 'name' => 'editGroup', 'id' => 'mw-userrights-form2' ) ) .
 374                         Xml::hidden( 'user', $this->mTarget ) .
 375                         Xml::hidden( 'wpEditToken', $wgUser->editToken( $this->mTarget ) ) .
 376                         Xml::openElement( 'fieldset' ) .
 377                         Xml::element( 'legend', array(), wfMsg( 'userrights-editusergroup' ) ) .
 378                         wfMsgExt( 'editinguser', array( 'parse' ), wfEscapeWikiText( $user->getName() ) ) .
 379                         wfMsgExt( 'userrights-groups-help', array( 'parse' ) ) .
 380                         $grouplist .
 381                         Xml::tags( 'p', null, $this->groupCheckboxes( $groups ) ) .
 382                         Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-userrights-table-outer' ) ) .
 383                                 "<tr>
 384                                         <td class='mw-label'>" .
 385                                                 Xml::label( wfMsg( 'userrights-reason' ), 'wpReason' ) .
 386                                         "</td>
 387                                         <td class='mw-input'>" .
 388                                                 Xml::input( 'user-reason', 60, false, array( 'id' => 'wpReason', 'maxlength' => 255 ) ) .
 389                                         "</td>
 390                                 </tr>
 391                                 <tr>
 392                                         <td></td>
 393                                         <td class='mw-submit'>" .
 394                                                 Xml::submitButton( wfMsg( 'saveusergroups' ), array( 'name' => 'saveusergroups', 'accesskey' => 's' ) ) .
 395                                         "</td>
 396                                 </tr>" .
 397                         Xml::closeElement( 'table' ) . "\n" .
 398                         Xml::closeElement( 'fieldset' ) .
 399                         Xml::closeElement( 'form' ) . "\n"
 400                 );
 401         }
 402
 403         /**
 404          * Format a link to a group description page
 405          *
 406          * @param $group string
 407          * @return string
 408          */
 409         private static function buildGroupLink( $group ) {
 410                 static $cache = array();
 411                 if( !isset( $cache[$group] ) )
 412                         $cache[$group] = User::makeGroupLinkHtml( $group, User::getGroupName( $group ) );
 413                 return $cache[$group];
 414         }
 415
 416         /**
 417          * Returns an array of all groups that may be edited
 418          * @return array Array of groups that may be edited.
 419          */
 420          protected static function getAllGroups() {
 421                 return User::getAllGroups();
 422          }
 423
 424         /**
 425          * Adds a table with checkboxes where you can select what groups to add/remove
 426          *
 427          * @param $usergroups Array: groups the user belongs to
 428          * @return string XHTML table element with checkboxes
 429          */
 430         private function groupCheckboxes( $usergroups ) {
 431                 $allgroups = $this->getAllGroups();
 432                 $ret = '';
 433
 434                 $column = 1;
 435                 $settable_col = '';
 436                 $unsettable_col = '';
 437
 438                 foreach ($allgroups as $group) {
 439                         $set = in_array( $group, $usergroups );
 440                         # Should the checkbox be disabled?
 441                         $disabled = !(
 442                                 ( $set && $this->canRemove( $group ) ) ||
 443                                 ( !$set && $this->canAdd( $group ) ) );
 444                         # Do we need to point out that this action is irreversible?
 445                         $irreversible = !$disabled && (
 446                                 ($set && !$this->canAdd( $group )) ||
 447                                 (!$set && !$this->canRemove( $group ) ) );
 448
 449                         $attr = $disabled ? array( 'disabled' => 'disabled' ) : array();
 450                         $text = $irreversible
 451                                 ? wfMsgHtml( 'userrights-irreversible-marker', User::getGroupMember( $group ) )
 452                                 : User::getGroupMember( $group );
 453                         $checkbox = Xml::checkLabel( $text, "wpGroup-$group",
 454                                 "wpGroup-$group", $set, $attr );
 455                         $checkbox = $disabled ? Xml::tags( 'span', array( 'class' => 'mw-userrights-disabled' ), $checkbox ) : $checkbox;
 456
 457                         if ($disabled) {
 458                                 $unsettable_col .= "$checkbox<br />\n";
 459                         } else {
 460                                 $settable_col .= "$checkbox<br />\n";
 461                         }
 462                 }
 463
 464                 if ($column) {
 465                         $ret .= Xml::openElement( 'table', array( 'border' => '0', 'class' => 'mw-userrights-groups' ) ) .
 466                                 "<tr>
 467 ";
 468                         if( $settable_col !== '' ) {
 469                                 $ret .= xml::element( 'th', null, wfMsg( 'userrights-changeable-col' ) );
 470                         }
 471                         if( $unsettable_col !== '' ) {
 472                                 $ret .= xml::element( 'th', null, wfMsg( 'userrights-unchangeable-col' ) );
 473                         }
 474                         $ret.= "</tr>
 475                                 <tr>
 476 ";
 477                         if( $settable_col !== '' ) {
 478                                 $ret .=
 479 "                                       <td style='vertical-align:top;'>
 480                                                 $settable_col
 481                                         </td>
 482 ";
 483                         }
 484                         if( $unsettable_col !== '' ) {
 485                                 $ret .=
 486 "                                       <td style='vertical-align:top;'>
 487                                                 $unsettable_col
 488                                         </td>
 489 ";
 490                         }
 491                         $ret .= Xml::closeElement( 'tr' ) . Xml::closeElement( 'table' );
 492                 }
 493
 494                 return $ret;
 495         }
 496
 497         /**
 498          * @param  $group String: the name of the group to check
 499          * @return bool Can we remove the group?
 500          */
 501         private function canRemove( $group ) {
 502                 // $this->changeableGroups()['remove'] doesn't work, of course. Thanks,
 503                 // PHP.
 504                 $groups = $this->changeableGroups();
 505                 return in_array( $group, $groups['remove'] ) || ($this->isself && in_array( $group, $groups['remove-self'] ));
 506         }
 507
 508         /**
 509          * @param $group string: the name of the group to check
 510          * @return bool Can we add the group?
 511          */
 512         private function canAdd( $group ) {
 513                 $groups = $this->changeableGroups();
 514                 return in_array( $group, $groups['add'] ) || ($this->isself && in_array( $group, $groups['add-self'] ));
 515         }
 516
 517         /**
 518          * Returns an array of the groups that the user can add/remove.
 519          *
 520          * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ) , 'add-self' => array( addablegroups to self), 'remove-self' => array( removable groups from self) )
 521          */
 522         function changeableGroups() {
 523                 global $wgUser;
 524
 525                 if( $wgUser->isAllowed( 'userrights' ) ) {
 526                         // This group gives the right to modify everything (reverse-
 527                         // compatibility with old "userrights lets you change
 528                         // everything")
 529                         // Using array_merge to make the groups reindexed
 530                         $all = array_merge( User::getAllGroups() );
 531                         return array(
 532                                 'add' => $all,
 533                                 'remove' => $all,
 534                                 'add-self' => array(),
 535                                 'remove-self' => array()
 536                         );
 537                 }
 538
 539                 // Okay, it's not so simple, we will have to go through the arrays
 540                 $groups = array(
 541                                 'add' => array(),
 542                                 'remove' => array(),
 543                                 'add-self' => array(),
 544                                 'remove-self' => array() );
 545                 $addergroups = $wgUser->getEffectiveGroups();
 546
 547                 foreach ($addergroups as $addergroup) {
 548                         $groups = array_merge_recursive(
 549                                 $groups, $this->changeableByGroup($addergroup)
 550                         );
 551                         $groups['add']    = array_unique( $groups['add'] );
 552                         $groups['remove'] = array_unique( $groups['remove'] );
 553                         $groups['add-self'] = array_unique( $groups['add-self'] );
 554                         $groups['remove-self'] = array_unique( $groups['remove-self'] );
 555                 }
 556
 557                 // Run a hook because we can
 558                 wfRunHooks( 'UserrightsChangeableGroups', array( $this, $wgUser, $addergroups, &$groups ) );
 559
 560                 return $groups;
 561         }
 562
 563         /**
 564          * Returns an array of the groups that a particular group can add/remove.
 565          *
 566          * @param $group String: the group to check for whether it can add/remove
 567          * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ) , 'add-self' => array( addablegroups to self), 'remove-self' => array( removable groups from self) )
 568          */
 569         private function changeableByGroup( $group ) {
 570                 global $wgAddGroups, $wgRemoveGroups, $wgGroupsAddToSelf, $wgGroupsRemoveFromSelf;
 571
 572                 $groups = array( 'add' => array(), 'remove' => array(), 'add-self' => array(), 'remove-self' => array() );
 573                 if( empty($wgAddGroups[$group]) ) {
 574                         // Don't add anything to $groups
 575                 } elseif( $wgAddGroups[$group] === true ) {
 576                         // You get everything
 577                         $groups['add'] = User::getAllGroups();
 578                 } elseif( is_array($wgAddGroups[$group]) ) {
 579                         $groups['add'] = $wgAddGroups[$group];
 580                 }
 581
 582                 // Same thing for remove
 583                 if( empty($wgRemoveGroups[$group]) ) {
 584                 } elseif($wgRemoveGroups[$group] === true ) {
 585                         $groups['remove'] = User::getAllGroups();
 586                 } elseif( is_array($wgRemoveGroups[$group]) ) {
 587                         $groups['remove'] = $wgRemoveGroups[$group];
 588                 }
 589
 590                 // Re-map numeric keys of AddToSelf/RemoveFromSelf to the 'user' key for backwards compatibility
 591                 if( empty($wgGroupsAddToSelf['user']) || $wgGroupsAddToSelf['user'] !== true ) {
 592                         foreach($wgGroupsAddToSelf as $key => $value) {
 593                                 if( is_int($key) ) {
 594                                         $wgGroupsAddToSelf['user'][] = $value;
 595                                 }
 596                         }
 597                 }
 598
 599                 if( empty($wgGroupsRemoveFromSelf['user']) || $wgGroupsRemoveFromSelf['user'] !== true ) {
 600                         foreach($wgGroupsRemoveFromSelf as $key => $value) {
 601                                 if( is_int($key) ) {
 602                                         $wgGroupsRemoveFromSelf['user'][] = $value;
 603                                 }
 604                         }
 605                 }
 606
 607                 // Now figure out what groups the user can add to him/herself
 608                 if( empty($wgGroupsAddToSelf[$group]) ) {
 609                 } elseif( $wgGroupsAddToSelf[$group] === true ) {
 610                         // No idea WHY this would be used, but it's there
 611                         $groups['add-self'] = User::getAllGroups();
 612                 } elseif( is_array($wgGroupsAddToSelf[$group]) ) {
 613                         $groups['add-self'] = $wgGroupsAddToSelf[$group];
 614                 }
 615
 616                 if( empty($wgGroupsRemoveFromSelf[$group]) ) {
 617                 } elseif( $wgGroupsRemoveFromSelf[$group] === true ) {
 618                         $groups['remove-self'] = User::getAllGroups();
 619                 } elseif( is_array($wgGroupsRemoveFromSelf[$group]) ) {
 620                         $groups['remove-self'] = $wgGroupsRemoveFromSelf[$group];
 621                 }
 622
 623                 return $groups;
 624         }
 625
 626         /**
 627          * Show a rights log fragment for the specified user
 628          *
 629          * @param $user User to show log for
 630          * @param $output OutputPage to use
 631          */
 632         protected function showLogFragment( $user, $output ) {
 633                 $output->addHTML( Xml::element( 'h2', null, LogPage::logName( 'rights' ) . "\n" ) );
 634                 LogEventsList::showLogExtract( $output, 'rights', $user->getUserPage()->getPrefixedText() );
 635         }
 636 }