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         /**
  49          * @param User $user
  50          * @param bool $checkIfSelf
  51          * @return bool
  52          */
  53         public function userCanChangeRights( $user, $checkIfSelf = true ) {
  54                 $available = $this->changeableGroups();
  55                 if ( $user->getId() == 0 ) {
  56                         return false;
  57                 }
  58                 return !empty( $available['add'] )
  59                         || !empty( $available['remove'] )
  60                         || ( ( $this->isself || !$checkIfSelf ) &&
  61                                 ( !empty( $available['add-self'] )
  62                                         || !empty( $available['remove-self'] ) ) );
  63         }
  64
  65         /**
  66          * Manage forms to be shown according to posted data.
  67          * Depending on the submit button used, call a form or a save function.
  68          *
  69          * @param $par Mixed: string if any subpage provided, else null
  70          * @throws UserBlockedError|PermissionsError
  71          */
  72         public function execute( $par ) {
  73                 // If the visitor doesn't have permissions to assign or remove
  74                 // any groups, it's a bit silly to give them the user search prompt.
  75
  76                 $user = $this->getUser();
  77
  78                 /*
  79                  * If the user is blocked and they only have "partial" access
  80                  * (e.g. they don't have the userrights permission), then don't
  81                  * allow them to use Special:UserRights.
  82                  */
  83                 if( $user->isBlocked() && !$user->isAllowed( 'userrights' ) ) {
  84                         throw new UserBlockedError( $user->getBlock() );
  85                 }
  86
  87                 $request = $this->getRequest();
  88
  89                 if( $par !== null ) {
  90                         $this->mTarget = $par;
  91                 } else {
  92                         $this->mTarget = $request->getVal( 'user' );
  93                 }
  94
  95                 $available = $this->changeableGroups();
  96
  97                 if ( $this->mTarget === null ) {
  98                         /*
  99                          * If the user specified no target, and they can only
 100                          * edit their own groups, automatically set them as the
 101                          * target.
 102                          */
 103                         if ( !count( $available['add'] ) && !count( $available['remove'] ) )
 104                                 $this->mTarget = $user->getName();
 105                 }
 106
 107                 if ( User::getCanonicalName( $this->mTarget ) == $user->getName() ) {
 108                         $this->isself = true;
 109                 }
 110
 111                 if( !$this->userCanChangeRights( $user, true ) ) {
 112                         // @todo FIXME: There may be intermediate groups we can mention.
 113                         $msg = $user->isAnon() ? 'userrights-nologin' : 'userrights-notallowed';
 114                         throw new PermissionsError( null, array( array( $msg ) ) );
 115                 }
 116
 117                 $this->checkReadOnly();
 118
 119                 $this->setHeaders();
 120                 $this->outputHeader();
 121
 122                 $out = $this->getOutput();
 123                 $out->addModuleStyles( 'mediawiki.special' );
 124
 125                 // show the general form
 126                 if ( count( $available['add'] ) || count( $available['remove'] ) ) {
 127                         $this->switchForm();
 128                 }
 129
 130                 if( $request->wasPosted() ) {
 131                         // save settings
 132                         if( $request->getCheck( 'saveusergroups' ) ) {
 133                                 $reason = $request->getVal( 'user-reason' );
 134                                 $tok = $request->getVal( 'wpEditToken' );
 135                                 if( $user->matchEditToken( $tok, $this->mTarget ) ) {
 136                                         $this->saveUserGroups(
 137                                                 $this->mTarget,
 138                                                 $reason
 139                                         );
 140
 141                                         $out->redirect( $this->getSuccessURL() );
 142                                         return;
 143                                 }
 144                         }
 145                 }
 146
 147                 // show some more forms
 148                 if( $this->mTarget !== null ) {
 149                         $this->editUserGroupsForm( $this->mTarget );
 150                 }
 151         }
 152
 153         function getSuccessURL() {
 154                 return $this->getTitle( $this->mTarget )->getFullURL();
 155         }
 156
 157         /**
 158          * Save user groups changes in the database.
 159          * Data comes from the editUserGroupsForm() form function
 160          *
 161          * @param string $username username to apply changes to.
 162          * @param string $reason reason for group change
 163          * @return null
 164          */
 165         function saveUserGroups( $username, $reason = '' ) {
 166                 $status = $this->fetchUser( $username );
 167                 if( !$status->isOK() ) {
 168                         $this->getOutput()->addWikiText( $status->getWikiText() );
 169                         return;
 170                 } else {
 171                         $user = $status->value;
 172                 }
 173
 174                 $allgroups = $this->getAllGroups();
 175                 $addgroup = array();
 176                 $removegroup = array();
 177
 178                 // This could possibly create a highly unlikely race condition if permissions are changed between
 179                 //  when the form is loaded and when the form is saved. Ignoring it for the moment.
 180                 foreach ( $allgroups as $group ) {
 181                         // We'll tell it to remove all unchecked groups, and add all checked groups.
 182                         // Later on, this gets filtered for what can actually be removed
 183                         if ( $this->getRequest()->getCheck( "wpGroup-$group" ) ) {
 184                                 $addgroup[] = $group;
 185                         } else {
 186                                 $removegroup[] = $group;
 187                         }
 188                 }
 189
 190                 $this->doSaveUserGroups( $user, $addgroup, $removegroup, $reason );
 191         }
 192
 193         /**
 194          * Save user groups changes in the database.
 195          *
 196          * @param $user User object
 197          * @param array $add of groups to add
 198          * @param array $remove of groups to remove
 199          * @param string $reason reason for group change
 200          * @return Array: Tuple of added, then removed groups
 201          */
 202         function doSaveUserGroups( $user, $add, $remove, $reason = '' ) {
 203                 // Validate input set...
 204                 $isself = ( $user->getName() == $this->getUser()->getName() );
 205                 $groups = $user->getGroups();
 206                 $changeable = $this->changeableGroups();
 207                 $addable = array_merge( $changeable['add'], $isself ? $changeable['add-self'] : array() );
 208                 $removable = array_merge( $changeable['remove'], $isself ? $changeable['remove-self'] : array() );
 209
 210                 $remove = array_unique(
 211                         array_intersect( (array)$remove, $removable, $groups ) );
 212                 $add = array_unique( array_diff(
 213                         array_intersect( (array)$add, $addable ),
 214                         $groups )
 215                 );
 216
 217                 $oldGroups = $user->getGroups();
 218                 $newGroups = $oldGroups;
 219
 220                 // remove then add groups
 221                 if( $remove ) {
 222                         $newGroups = array_diff( $newGroups, $remove );
 223                         foreach( $remove as $group ) {
 224                                 $user->removeGroup( $group );
 225                         }
 226                 }
 227                 if( $add ) {
 228                         $newGroups = array_merge( $newGroups, $add );
 229                         foreach( $add as $group ) {
 230                                 $user->addGroup( $group );
 231                         }
 232                 }
 233                 $newGroups = array_unique( $newGroups );
 234
 235                 // Ensure that caches are cleared
 236                 $user->invalidateCache();
 237
 238                 wfDebug( 'oldGroups: ' . print_r( $oldGroups, true ) );
 239                 wfDebug( 'newGroups: ' . print_r( $newGroups, true ) );
 240                 wfRunHooks( 'UserRights', array( &$user, $add, $remove ) );
 241
 242                 if( $newGroups != $oldGroups ) {
 243                         $this->addLogEntry( $user, $oldGroups, $newGroups, $reason );
 244                 }
 245                 return array( $add, $remove );
 246         }
 247
 248         /**
 249          * Add a rights log entry for an action.
 250          */
 251         function addLogEntry( $user, $oldGroups, $newGroups, $reason ) {
 252                 $logEntry = new ManualLogEntry( 'rights', 'rights' );
 253                 $logEntry->setPerformer( $this->getUser() );
 254                 $logEntry->setTarget( $user->getUserPage() );
 255                 $logEntry->setComment( $reason );
 256                 $logEntry->setParameters( array(
 257                         '4::oldgroups' => $oldGroups,
 258                         '5::newgroups' => $newGroups,
 259                 ) );
 260                 $logid = $logEntry->insert();
 261                 $logEntry->publish( $logid );
 262         }
 263
 264         /**
 265          * Edit user groups membership
 266          * @param string $username name of the user.
 267          */
 268         function editUserGroupsForm( $username ) {
 269                 $status = $this->fetchUser( $username );
 270                 if( !$status->isOK() ) {
 271                         $this->getOutput()->addWikiText( $status->getWikiText() );
 272                         return;
 273                 } else {
 274                         $user = $status->value;
 275                 }
 276
 277                 $groups = $user->getGroups();
 278
 279                 $this->showEditUserGroupsForm( $user, $groups );
 280
 281                 // This isn't really ideal logging behavior, but let's not hide the
 282                 // interwiki logs if we're using them as is.
 283                 $this->showLogFragment( $user, $this->getOutput() );
 284         }
 285
 286         /**
 287          * Normalize the input username, which may be local or remote, and
 288          * return a user (or proxy) object for manipulating it.
 289          *
 290          * Side effects: error output for invalid access
 291          * @param string $username
 292          * @return Status object
 293          */
 294         public function fetchUser( $username ) {
 295                 global $wgUserrightsInterwikiDelimiter;
 296
 297                 $parts = explode( $wgUserrightsInterwikiDelimiter, $username );
 298                 if( count( $parts ) < 2 ) {
 299                         $name = trim( $username );
 300                         $database = '';
 301                 } else {
 302                         list( $name, $database ) = array_map( 'trim', $parts );
 303
 304                         if( $database == wfWikiID() ) {
 305                                 $database = '';
 306                         } else {
 307                                 if( !$this->getUser()->isAllowed( 'userrights-interwiki' ) ) {
 308                                         return Status::newFatal( 'userrights-no-interwiki' );
 309                                 }
 310                                 if( !UserRightsProxy::validDatabase( $database ) ) {
 311                                         return Status::newFatal( 'userrights-nodatabase', $database );
 312                                 }
 313                         }
 314                 }
 315
 316                 if( $name === '' ) {
 317                         return Status::newFatal( 'nouserspecified' );
 318                 }
 319
 320                 if( $name[0] == '#' ) {
 321                         // Numeric ID can be specified...
 322                         // We'll do a lookup for the name internally.
 323                         $id = intval( substr( $name, 1 ) );
 324
 325                         if( $database == '' ) {
 326                                 $name = User::whoIs( $id );
 327                         } else {
 328                                 $name = UserRightsProxy::whoIs( $database, $id );
 329                         }
 330
 331                         if( !$name ) {
 332                                 return Status::newFatal( 'noname' );
 333                         }
 334                 } else {
 335                         $name = User::getCanonicalName( $name );
 336                         if( $name === false ) {
 337                                 // invalid name
 338                                 return Status::newFatal( 'nosuchusershort', $username );
 339                         }
 340                 }
 341
 342                 if( $database == '' ) {
 343                         $user = User::newFromName( $name );
 344                 } else {
 345                         $user = UserRightsProxy::newFromName( $database, $name );
 346                 }
 347
 348                 if( !$user || $user->isAnon() ) {
 349                         return Status::newFatal( 'nosuchusershort', $username );
 350                 }
 351
 352                 return Status::newGood( $user );
 353         }
 354
 355         function makeGroupNameList( $ids ) {
 356                 if( empty( $ids ) ) {
 357                         return $this->msg( 'rightsnone' )->inContentLanguage()->text();
 358                 } else {
 359                         return implode( ', ', $ids );
 360                 }
 361         }
 362
 363         /**
 364          * Make a list of group names to be stored as parameter for log entries
 365          *
 366          * @deprecated in 1.21; use LogFormatter instead.
 367          * @param $ids array
 368          * @return string
 369          */
 370         function makeGroupNameListForLog( $ids ) {
 371                 wfDeprecated( __METHOD__, '1.21' );
 372
 373                 if( empty( $ids ) ) {
 374                         return '';
 375                 } else {
 376                         return $this->makeGroupNameList( $ids );
 377                 }
 378         }
 379
 380         /**
 381          * Output a form to allow searching for a user
 382          */
 383         function switchForm() {
 384                 global $wgScript;
 385                 $this->getOutput()->addHTML(
 386                         Html::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'name' => 'uluser', 'id' => 'mw-userrights-form1' ) ) .
 387                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
 388                         Xml::fieldset( $this->msg( 'userrights-lookup-user' )->text() ) .
 389                         Xml::inputLabel( $this->msg( 'userrights-user-editname' )->text(), 'user', 'username', 30, str_replace( '_', ' ', $this->mTarget ) ) . ' ' .
 390                         Xml::submitButton( $this->msg( 'editusergroup' )->text() ) .
 391                         Html::closeElement( 'fieldset' ) .
 392                         Html::closeElement( 'form' ) . "\n"
 393                 );
 394         }
 395
 396         /**
 397          * Go through used and available groups and return the ones that this
 398          * form will be able to manipulate based on the current user's system
 399          * permissions.
 400          *
 401          * @param array $groups list of groups the given user is in
 402          * @return Array:  Tuple of addable, then removable groups
 403          */
 404         protected function splitGroups( $groups ) {
 405                 list( $addable, $removable, $addself, $removeself ) = array_values( $this->changeableGroups() );
 406
 407                 $removable = array_intersect(
 408                         array_merge( $this->isself ? $removeself : array(), $removable ),
 409                         $groups
 410                 ); // Can't remove groups the user doesn't have
 411                 $addable = array_diff(
 412                         array_merge( $this->isself ? $addself : array(), $addable ),
 413                         $groups
 414                 ); // Can't add groups the user does have
 415
 416                 return array( $addable, $removable );
 417         }
 418
 419         /**
 420          * Show the form to edit group memberships.
 421          *
 422          * @param $user      User or UserRightsProxy you're editing
 423          * @param $groups    Array:  Array of groups the user is in
 424          */
 425         protected function showEditUserGroupsForm( $user, $groups ) {
 426                 $list = array();
 427                 $membersList = array();
 428                 foreach( $groups as $group ) {
 429                         $list[] = self::buildGroupLink( $group );
 430                         $membersList[] = self::buildGroupMemberLink( $group );
 431                 }
 432
 433                 $autoList = array();
 434                 $autoMembersList = array();
 435                 if ( $user instanceof User ) {
 436                         foreach( Autopromote::getAutopromoteGroups( $user ) as $group ) {
 437                                 $autoList[] = self::buildGroupLink( $group );
 438                                 $autoMembersList[] = self::buildGroupMemberLink( $group );
 439                         }
 440                 }
 441
 442                 $language = $this->getLanguage();
 443                 $displayedList = $this->msg( 'userrights-groupsmember-type',
 444                         $language->listToText( $list ),
 445                         $language->listToText( $membersList )
 446                 )->plain();
 447                 $displayedAutolist = $this->msg( 'userrights-groupsmember-type',
 448                         $language->listToText( $autoList ),
 449                         $language->listToText( $autoMembersList )
 450                 )->plain();
 451
 452                 $grouplist = '';
 453                 $count = count( $list );
 454                 if ( $count > 0 ) {
 455                         $grouplist = $this->msg( 'userrights-groupsmember', $count, $user->getName() )->parse();
 456                         $grouplist = '<p>' . $grouplist . ' ' . $displayedList . "</p>\n";
 457                 }
 458                 $count = count( $autoList );
 459                 if ( $count > 0 ) {
 460                         $autogrouplistintro = $this->msg( 'userrights-groupsmember-auto', $count, $user->getName() )->parse();
 461                         $grouplist .= '<p>' . $autogrouplistintro . ' ' . $displayedAutolist . "</p>\n";
 462                 }
 463
 464                 $userToolLinks = Linker::userToolLinks(
 465                                 $user->getId(),
 466                                 $user->getName(),
 467                                 false, /* default for redContribsWhenNoEdits */
 468                                 Linker::TOOL_LINKS_EMAIL /* Add "send e-mail" link */
 469                 );
 470
 471                 $this->getOutput()->addHTML(
 472                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL(), 'name' => 'editGroup', 'id' => 'mw-userrights-form2' ) ) .
 473                         Html::hidden( 'user', $this->mTarget ) .
 474                         Html::hidden( 'wpEditToken', $this->getUser()->getEditToken( $this->mTarget ) ) .
 475                         Xml::openElement( 'fieldset' ) .
 476                         Xml::element( 'legend', array(), $this->msg( 'userrights-editusergroup', $user->getName() )->text() ) .
 477                         $this->msg( 'editinguser' )->params( wfEscapeWikiText( $user->getName() ) )->rawParams( $userToolLinks )->parse() .
 478                         $this->msg( 'userrights-groups-help', $user->getName() )->parse() .
 479                         $grouplist .
 480                         Xml::tags( 'p', null, $this->groupCheckboxes( $groups, $user ) ) .
 481                         Xml::openElement( 'table', array( 'id' => 'mw-userrights-table-outer' ) ) .
 482                                 "<tr>
 483                                         <td class='mw-label'>" .
 484                                                 Xml::label( $this->msg( 'userrights-reason' )->text(), 'wpReason' ) .
 485                                         "</td>
 486                                         <td class='mw-input'>" .
 487                                                 Xml::input( 'user-reason', 60, $this->getRequest()->getVal( 'user-reason', false ),
 488                                                         array( 'id' => 'wpReason', 'maxlength' => 255 ) ) .
 489                                         "</td>
 490                                 </tr>
 491                                 <tr>
 492                                         <td></td>
 493                                         <td class='mw-submit'>" .
 494                                                 Xml::submitButton( $this->msg( 'saveusergroups' )->text(),
 495                                                         array( 'name' => 'saveusergroups' ) + Linker::tooltipAndAccesskeyAttribs( 'userrights-set' ) ) .
 496                                         "</td>
 497                                 </tr>" .
 498                         Xml::closeElement( 'table' ) . "\n" .
 499                         Xml::closeElement( 'fieldset' ) .
 500                         Xml::closeElement( 'form' ) . "\n"
 501                 );
 502         }
 503
 504         /**
 505          * Format a link to a group description page
 506          *
 507          * @param $group string
 508          * @return string
 509          */
 510         private static function buildGroupLink( $group ) {
 511                 return User::makeGroupLinkHtml( $group, User::getGroupName( $group ) );
 512         }
 513
 514         /**
 515          * Format a link to a group member description page
 516          *
 517          * @param $group string
 518          * @return string
 519          */
 520         private static function buildGroupMemberLink( $group ) {
 521                 return User::makeGroupLinkHtml( $group, User::getGroupMember( $group ) );
 522         }
 523
 524         /**
 525          * Returns an array of all groups that may be edited
 526          * @return array Array of groups that may be edited.
 527          */
 528         protected static function getAllGroups() {
 529                 return User::getAllGroups();
 530         }
 531
 532         /**
 533          * Adds a table with checkboxes where you can select what groups to add/remove
 534          *
 535          * @todo Just pass the username string?
 536          * @param array $usergroups groups the user belongs to
 537          * @param $user User a user object
 538          * @return string XHTML table element with checkboxes
 539          */
 540         private function groupCheckboxes( $usergroups, $user ) {
 541                 $allgroups = $this->getAllGroups();
 542                 $ret = '';
 543
 544                 # Put all column info into an associative array so that extensions can
 545                 # more easily manage it.
 546                 $columns = array( 'unchangeable' => array(), 'changeable' => array() );
 547
 548                 foreach( $allgroups as $group ) {
 549                         $set = in_array( $group, $usergroups );
 550                         # Should the checkbox be disabled?
 551                         $disabled = !(
 552                                 ( $set && $this->canRemove( $group ) ) ||
 553                                 ( !$set && $this->canAdd( $group ) ) );
 554                         # Do we need to point out that this action is irreversible?
 555                         $irreversible = !$disabled && (
 556                                 ( $set && !$this->canAdd( $group ) ) ||
 557                                 ( !$set && !$this->canRemove( $group ) ) );
 558
 559                         $checkbox = array(
 560                                 'set' => $set,
 561                                 'disabled' => $disabled,
 562                                 'irreversible' => $irreversible
 563                         );
 564
 565                         if( $disabled ) {
 566                                 $columns['unchangeable'][$group] = $checkbox;
 567                         } else {
 568                                 $columns['changeable'][$group] = $checkbox;
 569                         }
 570                 }
 571
 572                 # Build the HTML table
 573                 $ret .= Xml::openElement( 'table', array( 'class' => 'mw-userrights-groups' ) ) .
 574                         "<tr>\n";
 575                 foreach( $columns as $name => $column ) {
 576                         if( $column === array() )
 577                                 continue;
 578                         $ret .= Xml::element( 'th', null, $this->msg( 'userrights-' . $name . '-col', count( $column ) )->text() );
 579                 }
 580                 $ret .= "</tr>\n<tr>\n";
 581                 foreach( $columns as $column ) {
 582                         if( $column === array() )
 583                                 continue;
 584                         $ret .= "\t<td style='vertical-align:top;'>\n";
 585                         foreach( $column as $group => $checkbox ) {
 586                                 $attr = $checkbox['disabled'] ? array( 'disabled' => 'disabled' ) : array();
 587
 588                                 $member = User::getGroupMember( $group, $user->getName() );
 589                                 if ( $checkbox['irreversible'] ) {
 590                                         $text = $this->msg( 'userrights-irreversible-marker', $member )->escaped();
 591                                 } else {
 592                                         $text = htmlspecialchars( $member );
 593                                 }
 594                                 $checkboxHtml = Xml::checkLabel( $text, "wpGroup-" . $group,
 595                                         "wpGroup-" . $group, $checkbox['set'], $attr );
 596                                 $ret .= "\t\t" . ( $checkbox['disabled']
 597                                         ? Xml::tags( 'span', array( 'class' => 'mw-userrights-disabled' ), $checkboxHtml )
 598                                         : $checkboxHtml
 599                                 ) . "<br />\n";
 600                         }
 601                         $ret .= "\t</td>\n";
 602                 }
 603                 $ret .= Xml::closeElement( 'tr' ) . Xml::closeElement( 'table' );
 604
 605                 return $ret;
 606         }
 607
 608         /**
 609          * @param  $group String: the name of the group to check
 610          * @return bool Can we remove the group?
 611          */
 612         private function canRemove( $group ) {
 613                 // $this->changeableGroups()['remove'] doesn't work, of course. Thanks,
 614                 // PHP.
 615                 $groups = $this->changeableGroups();
 616                 return in_array( $group, $groups['remove'] ) || ( $this->isself && in_array( $group, $groups['remove-self'] ) );
 617         }
 618
 619         /**
 620          * @param string $group the name of the group to check
 621          * @return bool Can we add the group?
 622          */
 623         private function canAdd( $group ) {
 624                 $groups = $this->changeableGroups();
 625                 return in_array( $group, $groups['add'] ) || ( $this->isself && in_array( $group, $groups['add-self'] ) );
 626         }
 627
 628         /**
 629          * Returns $this->getUser()->changeableGroups()
 630          *
 631          * @return Array array( 'add' => array( addablegroups ), 'remove' => array( removablegroups ), 'add-self' => array( addablegroups to self ), 'remove-self' => array( removable groups from self ) )
 632          */
 633         function changeableGroups() {
 634                 return $this->getUser()->changeableGroups();
 635         }
 636
 637         /**
 638          * Show a rights log fragment for the specified user
 639          *
 640          * @param $user User to show log for
 641          * @param $output OutputPage to use
 642          */
 643         protected function showLogFragment( $user, $output ) {
 644                 $rightsLogPage = new LogPage( 'rights' );
 645                 $output->addHTML( Xml::element( 'h2', null, $rightsLogPage->getName()->text() ) );
 646                 LogEventsList::showLogExtract( $output, 'rights', $user->getUserPage() );
 647         }
 648
 649         protected function getGroupName() {
 650                 return 'users';
 651         }
 652 }