includes/ProtectionForm.php

   1 <?php
   2 /**
   3  * Page protection
   4  *
   5  * Copyright © 2005 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  */
  25 use MediaWiki\MediaWikiServices;
  26
  27 /**
  28  * Handles the page protection UI and backend
  29  */
  30 class ProtectionForm {
  31         /** @var array A map of action to restriction level, from request or default */
  32         protected $mRestrictions = [];
  33
  34         /** @var string The custom/additional protection reason */
  35         protected $mReason = '';
  36
  37         /** @var string The reason selected from the list, blank for other/additional */
  38         protected $mReasonSelection = '';
  39
  40         /** @var bool True if the restrictions are cascading, from request or existing protection */
  41         protected $mCascade = false;
  42
  43         /** @var array Map of action to "other" expiry time. Used in preference to mExpirySelection. */
  44         protected $mExpiry = [];
  45
  46         /**
  47          * @var array Map of action to value selected in expiry drop-down list.
  48          * Will be set to 'othertime' whenever mExpiry is set.
  49          */
  50         protected $mExpirySelection = [];
  51
  52         /** @var array Permissions errors for the protect action */
  53         protected $mPermErrors = [];
  54
  55         /** @var array Types (i.e. actions) for which levels can be selected */
  56         protected $mApplicableTypes = [];
  57
  58         /** @var array Map of action to the expiry time of the existing protection */
  59         protected $mExistingExpiry = [];
  60
  61         /** @var Article */
  62         protected $mArticle;
  63
  64         /** @var Title */
  65         protected $mTitle;
  66
  67         /** @var bool */
  68         protected $disabled;
  69
  70         /** @var array */
  71         protected $disabledAttrib;
  72
  73         /** @var IContextSource */
  74         private $mContext;
  75
  76         function __construct( Article $article ) {
  77                 // Set instance variables.
  78                 $this->mArticle = $article;
  79                 $this->mTitle = $article->getTitle();
  80                 $this->mApplicableTypes = $this->mTitle->getRestrictionTypes();
  81                 $this->mContext = $article->getContext();
  82
  83                 // Check if the form should be disabled.
  84                 // If it is, the form will be available in read-only to show levels.
  85                 $this->mPermErrors = $this->mTitle->getUserPermissionsErrors(
  86                         'protect',
  87                         $this->mContext->getUser(),
  88                         $this->mContext->getRequest()->wasPosted() ? 'secure' : 'full' // T92357
  89                 );
  90                 if ( wfReadOnly() ) {
  91                         $this->mPermErrors[] = [ 'readonlytext', wfReadOnlyReason() ];
  92                 }
  93                 $this->disabled = $this->mPermErrors !== [];
  94                 $this->disabledAttrib = $this->disabled
  95                         ? [ 'disabled' => 'disabled' ]
  96                         : [];
  97
  98                 $this->loadData();
  99         }
 100
 101         /**
 102          * Loads the current state of protection into the object.
 103          */
 104         function loadData() {
 105                 $levels = MediaWikiServices::getInstance()->getPermissionManager()->getNamespaceRestrictionLevels(
 106                         $this->mTitle->getNamespace(), $this->mContext->getUser()
 107                 );
 108                 $this->mCascade = $this->mTitle->areRestrictionsCascading();
 109
 110                 $request = $this->mContext->getRequest();
 111                 $this->mReason = $request->getText( 'mwProtect-reason' );
 112                 $this->mReasonSelection = $request->getText( 'wpProtectReasonSelection' );
 113                 $this->mCascade = $request->getBool( 'mwProtect-cascade', $this->mCascade );
 114
 115                 foreach ( $this->mApplicableTypes as $action ) {
 116                         // @todo FIXME: This form currently requires individual selections,
 117                         // but the db allows multiples separated by commas.
 118
 119                         // Pull the actual restriction from the DB
 120                         $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
 121
 122                         if ( !$this->mRestrictions[$action] ) {
 123                                 // No existing expiry
 124                                 $existingExpiry = '';
 125                         } else {
 126                                 $existingExpiry = $this->mTitle->getRestrictionExpiry( $action );
 127                         }
 128                         $this->mExistingExpiry[$action] = $existingExpiry;
 129
 130                         $requestExpiry = $request->getText( "mwProtect-expiry-$action" );
 131                         $requestExpirySelection = $request->getVal( "wpProtectExpirySelection-$action" );
 132
 133                         if ( $requestExpiry ) {
 134                                 // Custom expiry takes precedence
 135                                 $this->mExpiry[$action] = $requestExpiry;
 136                                 $this->mExpirySelection[$action] = 'othertime';
 137                         } elseif ( $requestExpirySelection ) {
 138                                 // Expiry selected from list
 139                                 $this->mExpiry[$action] = '';
 140                                 $this->mExpirySelection[$action] = $requestExpirySelection;
 141                         } elseif ( $existingExpiry ) {
 142                                 // Use existing expiry in its own list item
 143                                 $this->mExpiry[$action] = '';
 144                                 $this->mExpirySelection[$action] = $existingExpiry;
 145                         } else {
 146                                 // Catches 'infinity' - Existing expiry is infinite, use "infinite" in drop-down
 147                                 // Final default: infinite
 148                                 $this->mExpiry[$action] = '';
 149                                 $this->mExpirySelection[$action] = 'infinite';
 150                         }
 151
 152                         $val = $request->getVal( "mwProtect-level-$action" );
 153                         if ( isset( $val ) && in_array( $val, $levels ) ) {
 154                                 $this->mRestrictions[$action] = $val;
 155                         }
 156                 }
 157         }
 158
 159         /**
 160          * Get the expiry time for a given action, by combining the relevant inputs.
 161          *
 162          * @param string $action
 163          *
 164          * @return string|false 14-char timestamp or "infinity", or false if the input was invalid
 165          */
 166         function getExpiry( $action ) {
 167                 if ( $this->mExpirySelection[$action] == 'existing' ) {
 168                         return $this->mExistingExpiry[$action];
 169                 } elseif ( $this->mExpirySelection[$action] == 'othertime' ) {
 170                         $value = $this->mExpiry[$action];
 171                 } else {
 172                         $value = $this->mExpirySelection[$action];
 173                 }
 174                 if ( wfIsInfinity( $value ) ) {
 175                         $time = 'infinity';
 176                 } else {
 177                         $unix = strtotime( $value );
 178
 179                         if ( !$unix || $unix === -1 ) {
 180                                 return false;
 181                         }
 182
 183                         // @todo FIXME: Non-qualified absolute times are not in users specified timezone
 184                         // and there isn't notice about it in the ui
 185                         $time = wfTimestamp( TS_MW, $unix );
 186                 }
 187                 return $time;
 188         }
 189
 190         /**
 191          * Main entry point for action=protect and action=unprotect
 192          */
 193         function execute() {
 194                 if (
 195                         MediaWikiServices::getInstance()->getPermissionManager()->getNamespaceRestrictionLevels(
 196                                 $this->mTitle->getNamespace()
 197                         ) === [ '' ]
 198                 ) {
 199                         throw new ErrorPageError( 'protect-badnamespace-title', 'protect-badnamespace-text' );
 200                 }
 201
 202                 if ( $this->mContext->getRequest()->wasPosted() ) {
 203                         if ( $this->save() ) {
 204                                 $q = $this->mArticle->isRedirect() ? 'redirect=no' : '';
 205                                 $this->mContext->getOutput()->redirect( $this->mTitle->getFullURL( $q ) );
 206                         }
 207                 } else {
 208                         $this->show();
 209                 }
 210         }
 211
 212         /**
 213          * Show the input form with optional error message
 214          *
 215          * @param string|string[]|null $err Error message or null if there's no error
 216          */
 217         function show( $err = null ) {
 218                 $out = $this->mContext->getOutput();
 219                 $out->setRobotPolicy( 'noindex,nofollow' );
 220                 $out->addBacklinkSubtitle( $this->mTitle );
 221
 222                 if ( is_array( $err ) ) {
 223                         $out->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n", $err );
 224                 } elseif ( is_string( $err ) ) {
 225                         $out->addHTML( "<div class='error'>{$err}</div>\n" );
 226                 }
 227
 228                 if ( $this->mTitle->getRestrictionTypes() === [] ) {
 229                         // No restriction types available for the current title
 230                         // this might happen if an extension alters the available types
 231                         $out->setPageTitle( $this->mContext->msg(
 232                                 'protect-norestrictiontypes-title',
 233                                 $this->mTitle->getPrefixedText()
 234                         ) );
 235                         $out->addWikiTextAsInterface(
 236                                 $this->mContext->msg( 'protect-norestrictiontypes-text' )->plain()
 237                         );
 238
 239                         // Show the log in case protection was possible once
 240                         $this->showLogExtract( $out );
 241                         // return as there isn't anything else we can do
 242                         return;
 243                 }
 244
 245                 list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
 246                 if ( $cascadeSources && count( $cascadeSources ) > 0 ) {
 247                         $titles = '';
 248
 249                         foreach ( $cascadeSources as $title ) {
 250                                 $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 251                         }
 252
 253                         /** @todo FIXME: i18n issue, should use formatted number. */
 254                         $out->wrapWikiMsg(
 255                                 "<div id=\"mw-protect-cascadeon\">\n$1\n" . $titles . "</div>",
 256                                 [ 'protect-cascadeon', count( $cascadeSources ) ]
 257                         );
 258                 }
 259
 260                 # Show an appropriate message if the user isn't allowed or able to change
 261                 # the protection settings at this time
 262                 if ( $this->disabled ) {
 263                         $out->setPageTitle(
 264                                 $this->mContext->msg( 'protect-title-notallowed',
 265                                         $this->mTitle->getPrefixedText() )
 266                         );
 267                         $out->addWikiTextAsInterface( $out->formatPermissionsErrorMessage(
 268                                 $this->mPermErrors, 'protect'
 269                         ) );
 270                 } else {
 271                         $out->setPageTitle( $this->mContext->msg( 'protect-title', $this->mTitle->getPrefixedText() ) );
 272                         $out->addWikiMsg( 'protect-text',
 273                                 wfEscapeWikiText( $this->mTitle->getPrefixedText() ) );
 274                 }
 275
 276                 $out->addHTML( $this->buildForm() );
 277                 $this->showLogExtract( $out );
 278         }
 279
 280         /**
 281          * Save submitted protection form
 282          *
 283          * @return bool Success
 284          */
 285         function save() {
 286                 # Permission check!
 287                 if ( $this->disabled ) {
 288                         $this->show();
 289                         return false;
 290                 }
 291
 292                 $request = $this->mContext->getRequest();
 293                 $user = $this->mContext->getUser();
 294                 $out = $this->mContext->getOutput();
 295                 $token = $request->getVal( 'wpEditToken' );
 296                 if ( !$user->matchEditToken( $token, [ 'protect', $this->mTitle->getPrefixedDBkey() ] ) ) {
 297                         $this->show( [ 'sessionfailure' ] );
 298                         return false;
 299                 }
 300
 301                 # Create reason string. Use list and/or custom string.
 302                 $reasonstr = $this->mReasonSelection;
 303                 if ( $reasonstr != 'other' && $this->mReason != '' ) {
 304                         // Entry from drop down menu + additional comment
 305                         $reasonstr .= $this->mContext->msg( 'colon-separator' )->text() . $this->mReason;
 306                 } elseif ( $reasonstr == 'other' ) {
 307                         $reasonstr = $this->mReason;
 308                 }
 309                 $expiry = [];
 310                 foreach ( $this->mApplicableTypes as $action ) {
 311                         $expiry[$action] = $this->getExpiry( $action );
 312                         if ( empty( $this->mRestrictions[$action] ) ) {
 313                                 continue; // unprotected
 314                         }
 315                         if ( !$expiry[$action] ) {
 316                                 $this->show( [ 'protect_expiry_invalid' ] );
 317                                 return false;
 318                         }
 319                         if ( $expiry[$action] < wfTimestampNow() ) {
 320                                 $this->show( [ 'protect_expiry_old' ] );
 321                                 return false;
 322                         }
 323                 }
 324
 325                 $this->mCascade = $request->getBool( 'mwProtect-cascade' );
 326
 327                 $status = $this->mArticle->doUpdateRestrictions(
 328                         $this->mRestrictions,
 329                         $expiry,
 330                         $this->mCascade,
 331                         $reasonstr,
 332                         $user
 333                 );
 334
 335                 if ( !$status->isOK() ) {
 336                         $this->show( $out->parseInlineAsInterface( $status->getWikiText() ) );
 337                         return false;
 338                 }
 339
 340                 /**
 341                  * Give extensions a change to handle added form items
 342                  *
 343                  * @since 1.19 you can (and you should) return false to abort saving;
 344                  *             you can also return an array of message name and its parameters
 345                  */
 346                 $errorMsg = '';
 347                 if ( !Hooks::run( 'ProtectionForm::save', [ $this->mArticle, &$errorMsg, $reasonstr ] ) ) {
 348                         if ( $errorMsg == '' ) {
 349                                 $errorMsg = [ 'hookaborted' ];
 350                         }
 351                 }
 352                 if ( $errorMsg != '' ) {
 353                         $this->show( $errorMsg );
 354                         return false;
 355                 }
 356
 357                 WatchAction::doWatchOrUnwatch( $request->getCheck( 'mwProtectWatch' ), $this->mTitle, $user );
 358
 359                 return true;
 360         }
 361
 362         /**
 363          * Build the input form
 364          *
 365          * @return string HTML form
 366          */
 367         function buildForm() {
 368                 $context = $this->mContext;
 369                 $user = $context->getUser();
 370                 $output = $context->getOutput();
 371                 $lang = $context->getLanguage();
 372                 $out = '';
 373                 if ( !$this->disabled ) {
 374                         $output->addModules( 'mediawiki.legacy.protect' );
 375                         $out .= Xml::openElement( 'form', [ 'method' => 'post',
 376                                 'action' => $this->mTitle->getLocalURL( 'action=protect' ),
 377                                 'id' => 'mw-Protect-Form' ] );
 378                 }
 379
 380                 $out .= Xml::openElement( 'fieldset' ) .
 381                         Xml::element( 'legend', null, $context->msg( 'protect-legend' )->text() ) .
 382                         Xml::openElement( 'table', [ 'id' => 'mwProtectSet' ] ) .
 383                         Xml::openElement( 'tbody' );
 384
 385                 $scExpiryOptions = wfMessage( 'protect-expiry-options' )->inContentLanguage()->text();
 386                 $showProtectOptions = $scExpiryOptions !== '-' && !$this->disabled;
 387
 388                 // Not all languages have V_x <-> N_x relation
 389                 foreach ( $this->mRestrictions as $action => $selected ) {
 390                         // Messages:
 391                         // restriction-edit, restriction-move, restriction-create, restriction-upload
 392                         $msg = $context->msg( 'restriction-' . $action );
 393                         $out .= "<tr><td>" .
 394                         Xml::openElement( 'fieldset' ) .
 395                         Xml::element( 'legend', null, $msg->exists() ? $msg->text() : $action ) .
 396                         Xml::openElement( 'table', [ 'id' => "mw-protect-table-$action" ] ) .
 397                                 "<tr><td>" . $this->buildSelector( $action, $selected ) . "</td></tr><tr><td>";
 398
 399                         $mProtectexpiry = Xml::label(
 400                                 $context->msg( 'protectexpiry' )->text(),
 401                                 "mwProtectExpirySelection-$action"
 402                         );
 403                         $mProtectother = Xml::label(
 404                                 $context->msg( 'protect-othertime' )->text(),
 405                                 "mwProtect-$action-expires"
 406                         );
 407
 408                         $expiryFormOptions = new XmlSelect(
 409                                 "wpProtectExpirySelection-$action",
 410                                 "mwProtectExpirySelection-$action",
 411                                 $this->mExpirySelection[$action]
 412                         );
 413                         $expiryFormOptions->setAttribute( 'tabindex', '2' );
 414                         if ( $this->disabled ) {
 415                                 $expiryFormOptions->setAttribute( 'disabled', 'disabled' );
 416                         }
 417
 418                         if ( $this->mExistingExpiry[$action] ) {
 419                                 if ( $this->mExistingExpiry[$action] == 'infinity' ) {
 420                                         $existingExpiryMessage = $context->msg( 'protect-existing-expiry-infinity' );
 421                                 } else {
 422                                         $timestamp = $lang->userTimeAndDate( $this->mExistingExpiry[$action], $user );
 423                                         $d = $lang->userDate( $this->mExistingExpiry[$action], $user );
 424                                         $t = $lang->userTime( $this->mExistingExpiry[$action], $user );
 425                                         $existingExpiryMessage = $context->msg(
 426                                                 'protect-existing-expiry',
 427                                                 $timestamp,
 428                                                 $d,
 429                                                 $t
 430                                         );
 431                                 }
 432                                 $expiryFormOptions->addOption( $existingExpiryMessage->text(), 'existing' );
 433                         }
 434
 435                         $expiryFormOptions->addOption(
 436                                 $context->msg( 'protect-othertime-op' )->text(),
 437                                 'othertime'
 438                         );
 439                         foreach ( explode( ',', $scExpiryOptions ) as $option ) {
 440                                 if ( strpos( $option, ":" ) === false ) {
 441                                         $show = $value = $option;
 442                                 } else {
 443                                         list( $show, $value ) = explode( ":", $option );
 444                                 }
 445                                 $expiryFormOptions->addOption( $show, htmlspecialchars( $value ) );
 446                         }
 447                         # Add expiry dropdown
 448                         if ( $showProtectOptions && !$this->disabled ) {
 449                                 $out .= "
 450                                         <table><tr>
 451                                                 <td class='mw-label'>
 452                                                         {$mProtectexpiry}
 453                                                 </td>
 454                                                 <td class='mw-input'>" .
 455                                                         $expiryFormOptions->getHTML() .
 456                                                 "</td>
 457                                         </tr></table>";
 458                         }
 459                         # Add custom expiry field
 460                         $attribs = [ 'id' => "mwProtect-$action-expires" ] + $this->disabledAttrib;
 461                         $out .= "<table><tr>
 462                                         <td class='mw-label'>" .
 463                                                 $mProtectother .
 464                                         '</td>
 465                                         <td class="mw-input">' .
 466                                                 Xml::input( "mwProtect-expiry-$action", 50, $this->mExpiry[$action], $attribs ) .
 467                                         '</td>
 468                                 </tr></table>';
 469                         $out .= "</td></tr>" .
 470                         Xml::closeElement( 'table' ) .
 471                         Xml::closeElement( 'fieldset' ) .
 472                         "</td></tr>";
 473                 }
 474                 # Give extensions a chance to add items to the form
 475                 Hooks::run( 'ProtectionForm::buildForm', [ $this->mArticle, &$out ] );
 476
 477                 $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 478
 479                 // JavaScript will add another row with a value-chaining checkbox
 480                 if ( $this->mTitle->exists() ) {
 481                         $out .= Xml::openElement( 'table', [ 'id' => 'mw-protect-table2' ] ) .
 482                                 Xml::openElement( 'tbody' );
 483                         $out .= '<tr>
 484                                         <td></td>
 485                                         <td class="mw-input">' .
 486                                                 Xml::checkLabel(
 487                                                         $context->msg( 'protect-cascade' )->text(),
 488                                                         'mwProtect-cascade',
 489                                                         'mwProtect-cascade',
 490                                                         $this->mCascade, $this->disabledAttrib
 491                                                 ) .
 492                                         "</td>
 493                                 </tr>\n";
 494                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 495                 }
 496
 497                 # Add manual and custom reason field/selects as well as submit
 498                 if ( !$this->disabled ) {
 499                         $mProtectreasonother = Xml::label(
 500                                 $context->msg( 'protectcomment' )->text(),
 501                                 'wpProtectReasonSelection'
 502                         );
 503
 504                         $mProtectreason = Xml::label(
 505                                 $context->msg( 'protect-otherreason' )->text(),
 506                                 'mwProtect-reason'
 507                         );
 508
 509                         $reasonDropDown = Xml::listDropDown( 'wpProtectReasonSelection',
 510                                 wfMessage( 'protect-dropdown' )->inContentLanguage()->text(),
 511                                 wfMessage( 'protect-otherreason-op' )->inContentLanguage()->text(),
 512                                 $this->mReasonSelection,
 513                                 'mwProtect-reason', 4 );
 514
 515                         // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
 516                         // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
 517                         // Unicode codepoints.
 518                         // Subtract arbitrary 75 to leave some space for the autogenerated null edit's summary
 519                         // and other texts chosen by dropdown menus on this page.
 520                         $maxlength = CommentStore::COMMENT_CHARACTER_LIMIT - 75;
 521
 522                         $out .= Xml::openElement( 'table', [ 'id' => 'mw-protect-table3' ] ) .
 523                                 Xml::openElement( 'tbody' );
 524                         $out .= "
 525                                 <tr>
 526                                         <td class='mw-label'>
 527                                                 {$mProtectreasonother}
 528                                         </td>
 529                                         <td class='mw-input'>
 530                                                 {$reasonDropDown}
 531                                         </td>
 532                                 </tr>
 533                                 <tr>
 534                                         <td class='mw-label'>
 535                                                 {$mProtectreason}
 536                                         </td>
 537                                         <td class='mw-input'>" .
 538                                                 Xml::input( 'mwProtect-reason', 60, $this->mReason, [ 'type' => 'text',
 539                                                         'id' => 'mwProtect-reason', 'maxlength' => $maxlength ] ) .
 540                                         "</td>
 541                                 </tr>";
 542                         # Disallow watching is user is not logged in
 543                         if ( $user->isLoggedIn() ) {
 544                                 $out .= "
 545                                 <tr>
 546                                         <td></td>
 547                                         <td class='mw-input'>" .
 548                                                 Xml::checkLabel( $context->msg( 'watchthis' )->text(),
 549                                                         'mwProtectWatch', 'mwProtectWatch',
 550                                                         $user->isWatched( $this->mTitle ) || $user->getOption( 'watchdefault' ) ) .
 551                                         "</td>
 552                                 </tr>";
 553                         }
 554                         $out .= "
 555                                 <tr>
 556                                         <td></td>
 557                                         <td class='mw-submit'>" .
 558                                                 Xml::submitButton(
 559                                                         $context->msg( 'confirm' )->text(),
 560                                                         [ 'id' => 'mw-Protect-submit' ]
 561                                                 ) .
 562                                         "</td>
 563                                 </tr>\n";
 564                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 565                 }
 566                 $out .= Xml::closeElement( 'fieldset' );
 567
 568                 if ( MediaWikiServices::getInstance()->getPermissionManager()
 569                                 ->userHasRight( $user, 'editinterface' ) ) {
 570                         $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 571                         $link = $linkRenderer->makeKnownLink(
 572                                 $context->msg( 'protect-dropdown' )->inContentLanguage()->getTitle(),
 573                                 $context->msg( 'protect-edit-reasonlist' )->text(),
 574                                 [],
 575                                 [ 'action' => 'edit' ]
 576                         );
 577                         $out .= '<p class="mw-protect-editreasons">' . $link . '</p>';
 578                 }
 579
 580                 if ( !$this->disabled ) {
 581                         $out .= Html::hidden(
 582                                 'wpEditToken',
 583                                 $user->getEditToken( [ 'protect', $this->mTitle->getPrefixedDBkey() ] )
 584                         );
 585                         $out .= Xml::closeElement( 'form' );
 586                 }
 587
 588                 return $out;
 589         }
 590
 591         /**
 592          * Build protection level selector
 593          *
 594          * @param string $action Action to protect
 595          * @param string $selected Current protection level
 596          * @return string HTML fragment
 597          */
 598         function buildSelector( $action, $selected ) {
 599                 // If the form is disabled, display all relevant levels. Otherwise,
 600                 // just show the ones this user can use.
 601                 $levels = MediaWikiServices::getInstance()
 602                                 ->getPermissionManager()
 603                                 ->getNamespaceRestrictionLevels(
 604                                         $this->mTitle->getNamespace(),
 605                                         $this->disabled ? null : $this->mContext->getUser()
 606                                 );
 607
 608                 $id = 'mwProtect-level-' . $action;
 609
 610                 $select = new XmlSelect( $id, $id, $selected );
 611                 $select->setAttribute( 'size', count( $levels ) );
 612                 if ( $this->disabled ) {
 613                         $select->setAttribute( 'disabled', 'disabled' );
 614                 }
 615
 616                 foreach ( $levels as $key ) {
 617                         $select->addOption( $this->getOptionLabel( $key ), $key );
 618                 }
 619
 620                 return $select->getHTML();
 621         }
 622
 623         /**
 624          * Prepare the label for a protection selector option
 625          *
 626          * @param string $permission Permission required
 627          * @return string
 628          */
 629         private function getOptionLabel( $permission ) {
 630                 if ( $permission == '' ) {
 631                         return $this->mContext->msg( 'protect-default' )->text();
 632                 } else {
 633                         // Messages: protect-level-autoconfirmed, protect-level-sysop
 634                         $msg = $this->mContext->msg( "protect-level-{$permission}" );
 635                         if ( $msg->exists() ) {
 636                                 return $msg->text();
 637                         }
 638                         return $this->mContext->msg( 'protect-fallback', $permission )->text();
 639                 }
 640         }
 641
 642         /**
 643          * Show protection long extracts for this page
 644          *
 645          * @param OutputPage $out
 646          */
 647         private function showLogExtract( OutputPage $out ) {
 648                 # Show relevant lines from the protection log:
 649                 $protectLogPage = new LogPage( 'protect' );
 650                 $out->addHTML( Xml::element( 'h2', null, $protectLogPage->getName()->text() ) );
 651                 LogEventsList::showLogExtract( $out, 'protect', $this->mTitle );
 652                 # Let extensions add other relevant log extracts
 653                 Hooks::run( 'ProtectionForm::showLogExtract', [ $this->mArticle, $out ] );
 654         }
 655 }