includes/specials/SpecialBlock.php

   1 <?php
   2 /**
   3  * Implements Special:Block
   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  * A special page that allows users with 'block' right to block users from
  26  * editing pages and other actions
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialBlock extends FormSpecialPage {
  31         /** @var User|string|null User to be blocked, as passed either by parameter (url?wpTarget=Foo)
  32          * or as subpage (Special:Block/Foo) */
  33         protected $target;
  34
  35         /** @var int Block::TYPE_ constant */
  36         protected $type;
  37
  38         /** @var User|string The previous block target */
  39         protected $previousTarget;
  40
  41         /** @var bool Whether the previous submission of the form asked for HideUser */
  42         protected $requestedHideUser;
  43
  44         /** @var bool */
  45         protected $alreadyBlocked;
  46
  47         /** @var array */
  48         protected $preErrors = [];
  49
  50         public function __construct() {
  51                 parent::__construct( 'Block', 'block' );
  52         }
  53
  54         public function doesWrites() {
  55                 return true;
  56         }
  57
  58         /**
  59          * Checks that the user can unblock themselves if they are trying to do so
  60          *
  61          * @param User $user
  62          * @throws ErrorPageError
  63          */
  64         protected function checkExecutePermissions( User $user ) {
  65                 parent::checkExecutePermissions( $user );
  66
  67                 # T17810: blocked admins should have limited access here
  68                 $status = self::checkUnblockSelf( $this->target, $user );
  69                 if ( $status !== true ) {
  70                         throw new ErrorPageError( 'badaccess', $status );
  71                 }
  72         }
  73
  74         /**
  75          * Handle some magic here
  76          *
  77          * @param string $par
  78          */
  79         protected function setParameter( $par ) {
  80                 # Extract variables from the request.  Try not to get into a situation where we
  81                 # need to extract *every* variable from the form just for processing here, but
  82                 # there are legitimate uses for some variables
  83                 $request = $this->getRequest();
  84                 list( $this->target, $this->type ) = self::getTargetAndType( $par, $request );
  85                 if ( $this->target instanceof User ) {
  86                         # Set the 'relevant user' in the skin, so it displays links like Contributions,
  87                         # User logs, UserRights, etc.
  88                         $this->getSkin()->setRelevantUser( $this->target );
  89                 }
  90
  91                 list( $this->previousTarget, /*...*/ ) =
  92                         Block::parseTarget( $request->getVal( 'wpPreviousTarget' ) );
  93                 $this->requestedHideUser = $request->getBool( 'wpHideUser' );
  94         }
  95
  96         /**
  97          * Customizes the HTMLForm a bit
  98          *
  99          * @param HTMLForm $form
 100          */
 101         protected function alterForm( HTMLForm $form ) {
 102                 $form->setHeaderText( '' );
 103                 $form->setSubmitDestructive();
 104
 105                 $msg = $this->alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit';
 106                 $form->setSubmitTextMsg( $msg );
 107
 108                 $this->addHelpLink( 'Help:Blocking users' );
 109
 110                 # Don't need to do anything if the form has been posted
 111                 if ( !$this->getRequest()->wasPosted() && $this->preErrors ) {
 112                         $s = $form->formatErrors( $this->preErrors );
 113                         if ( $s ) {
 114                                 $form->addHeaderText( Html::rawElement(
 115                                         'div',
 116                                         [ 'class' => 'error' ],
 117                                         $s
 118                                 ) );
 119                         }
 120                 }
 121         }
 122
 123         protected function getDisplayFormat() {
 124                 return 'ooui';
 125         }
 126
 127         /**
 128          * Get the HTMLForm descriptor array for the block form
 129          * @return array
 130          */
 131         protected function getFormFields() {
 132                 global $wgBlockAllowsUTEdit;
 133
 134                 $user = $this->getUser();
 135
 136                 $suggestedDurations = self::getSuggestedDurations();
 137
 138                 $a = [
 139                         'Target' => [
 140                                 'type' => 'user',
 141                                 'ipallowed' => true,
 142                                 'iprange' => true,
 143                                 'label-message' => 'ipaddressorusername',
 144                                 'id' => 'mw-bi-target',
 145                                 'size' => '45',
 146                                 'autofocus' => true,
 147                                 'required' => true,
 148                                 'validation-callback' => [ __CLASS__, 'validateTargetField' ],
 149                         ],
 150                         'Expiry' => [
 151                                 'type' => !count( $suggestedDurations ) ? 'text' : 'selectorother',
 152                                 'label-message' => 'ipbexpiry',
 153                                 'required' => true,
 154                                 'options' => $suggestedDurations,
 155                                 'other' => $this->msg( 'ipbother' )->text(),
 156                                 'default' => $this->msg( 'ipb-default-expiry' )->inContentLanguage()->text(),
 157                         ],
 158                         'Reason' => [
 159                                 'type' => 'selectandother',
 160                                 'maxlength' => 255,
 161                                 'label-message' => 'ipbreason',
 162                                 'options-message' => 'ipbreason-dropdown',
 163                         ],
 164                         'CreateAccount' => [
 165                                 'type' => 'check',
 166                                 'label-message' => 'ipbcreateaccount',
 167                                 'default' => true,
 168                         ],
 169                 ];
 170
 171                 if ( self::canBlockEmail( $user ) ) {
 172                         $a['DisableEmail'] = [
 173                                 'type' => 'check',
 174                                 'label-message' => 'ipbemailban',
 175                         ];
 176                 }
 177
 178                 if ( $wgBlockAllowsUTEdit ) {
 179                         $a['DisableUTEdit'] = [
 180                                 'type' => 'check',
 181                                 'label-message' => 'ipb-disableusertalk',
 182                                 'default' => false,
 183                         ];
 184                 }
 185
 186                 $a['AutoBlock'] = [
 187                         'type' => 'check',
 188                         'label-message' => 'ipbenableautoblock',
 189                         'default' => true,
 190                 ];
 191
 192                 # Allow some users to hide name from block log, blocklist and listusers
 193                 if ( $user->isAllowed( 'hideuser' ) ) {
 194                         $a['HideUser'] = [
 195                                 'type' => 'check',
 196                                 'label-message' => 'ipbhidename',
 197                                 'cssclass' => 'mw-block-hideuser',
 198                         ];
 199                 }
 200
 201                 # Watchlist their user page? (Only if user is logged in)
 202                 if ( $user->isLoggedIn() ) {
 203                         $a['Watch'] = [
 204                                 'type' => 'check',
 205                                 'label-message' => 'ipbwatchuser',
 206                         ];
 207                 }
 208
 209                 $a['HardBlock'] = [
 210                         'type' => 'check',
 211                         'label-message' => 'ipb-hardblock',
 212                         'default' => false,
 213                 ];
 214
 215                 # This is basically a copy of the Target field, but the user can't change it, so we
 216                 # can see if the warnings we maybe showed to the user before still apply
 217                 $a['PreviousTarget'] = [
 218                         'type' => 'hidden',
 219                         'default' => false,
 220                 ];
 221
 222                 # We'll turn this into a checkbox if we need to
 223                 $a['Confirm'] = [
 224                         'type' => 'hidden',
 225                         'default' => '',
 226                         'label-message' => 'ipb-confirm',
 227                         'cssclass' => 'mw-block-confirm',
 228                 ];
 229
 230                 $this->maybeAlterFormDefaults( $a );
 231
 232                 // Allow extensions to add more fields
 233                 Hooks::run( 'SpecialBlockModifyFormFields', [ $this, &$a ] );
 234
 235                 return $a;
 236         }
 237
 238         /**
 239          * If the user has already been blocked with similar settings, load that block
 240          * and change the defaults for the form fields to match the existing settings.
 241          * @param array &$fields HTMLForm descriptor array
 242          * @return bool Whether fields were altered (that is, whether the target is
 243          *     already blocked)
 244          */
 245         protected function maybeAlterFormDefaults( &$fields ) {
 246                 # This will be overwritten by request data
 247                 $fields['Target']['default'] = (string)$this->target;
 248
 249                 if ( $this->target ) {
 250                         $status = self::validateTarget( $this->target, $this->getUser() );
 251                         if ( !$status->isOK() ) {
 252                                 $errors = $status->getErrorsArray();
 253                                 $this->preErrors = array_merge( $this->preErrors, $errors );
 254                         }
 255                 }
 256
 257                 # This won't be
 258                 $fields['PreviousTarget']['default'] = (string)$this->target;
 259
 260                 $block = Block::newFromTarget( $this->target );
 261
 262                 if ( $block instanceof Block && !$block->mAuto # The block exists and isn't an autoblock
 263                         && ( $this->type != Block::TYPE_RANGE # The block isn't a rangeblock
 264                                 || $block->getTarget() == $this->target ) # or if it is, the range is what we're about to block
 265                 ) {
 266                         $fields['HardBlock']['default'] = $block->isHardblock();
 267                         $fields['CreateAccount']['default'] = $block->prevents( 'createaccount' );
 268                         $fields['AutoBlock']['default'] = $block->isAutoblocking();
 269
 270                         if ( isset( $fields['DisableEmail'] ) ) {
 271                                 $fields['DisableEmail']['default'] = $block->prevents( 'sendemail' );
 272                         }
 273
 274                         if ( isset( $fields['HideUser'] ) ) {
 275                                 $fields['HideUser']['default'] = $block->mHideName;
 276                         }
 277
 278                         if ( isset( $fields['DisableUTEdit'] ) ) {
 279                                 $fields['DisableUTEdit']['default'] = $block->prevents( 'editownusertalk' );
 280                         }
 281
 282                         // If the username was hidden (ipb_deleted == 1), don't show the reason
 283                         // unless this user also has rights to hideuser: T37839
 284                         if ( !$block->mHideName || $this->getUser()->isAllowed( 'hideuser' ) ) {
 285                                 $fields['Reason']['default'] = $block->mReason;
 286                         } else {
 287                                 $fields['Reason']['default'] = '';
 288                         }
 289
 290                         if ( $this->getRequest()->wasPosted() ) {
 291                                 # Ok, so we got a POST submission asking us to reblock a user.  So show the
 292                                 # confirm checkbox; the user will only see it if they haven't previously
 293                                 $fields['Confirm']['type'] = 'check';
 294                         } else {
 295                                 # We got a target, but it wasn't a POST request, so the user must have gone
 296                                 # to a link like [[Special:Block/User]].  We don't need to show the checkbox
 297                                 # as long as they go ahead and block *that* user
 298                                 $fields['Confirm']['default'] = 1;
 299                         }
 300
 301                         if ( $block->mExpiry == 'infinity' ) {
 302                                 $fields['Expiry']['default'] = 'infinite';
 303                         } else {
 304                                 $fields['Expiry']['default'] = wfTimestamp( TS_RFC2822, $block->mExpiry );
 305                         }
 306
 307                         $this->alreadyBlocked = true;
 308                         $this->preErrors[] = [ 'ipb-needreblock', wfEscapeWikiText( (string)$block->getTarget() ) ];
 309                 }
 310
 311                 # We always need confirmation to do HideUser
 312                 if ( $this->requestedHideUser ) {
 313                         $fields['Confirm']['type'] = 'check';
 314                         unset( $fields['Confirm']['default'] );
 315                         $this->preErrors[] = [ 'ipb-confirmhideuser', 'ipb-confirmaction' ];
 316                 }
 317
 318                 # Or if the user is trying to block themselves
 319                 if ( (string)$this->target === $this->getUser()->getName() ) {
 320                         $fields['Confirm']['type'] = 'check';
 321                         unset( $fields['Confirm']['default'] );
 322                         $this->preErrors[] = [ 'ipb-blockingself', 'ipb-confirmaction' ];
 323                 }
 324         }
 325
 326         /**
 327          * Add header elements like block log entries, etc.
 328          * @return string
 329          */
 330         protected function preText() {
 331                 $this->getOutput()->addModules( [ 'mediawiki.special.block' ] );
 332
 333                 $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
 334                 $text = $this->msg( 'blockiptext', $blockCIDRLimit['IPv4'], $blockCIDRLimit['IPv6'] )->parse();
 335
 336                 $otherBlockMessages = [];
 337                 if ( $this->target !== null ) {
 338                         $targetName = $this->target;
 339                         if ( $this->target instanceof User ) {
 340                                 $targetName = $this->target->getName();
 341                         }
 342                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 343                         Hooks::run( 'OtherBlockLogLink', [ &$otherBlockMessages, $targetName ] );
 344
 345                         if ( count( $otherBlockMessages ) ) {
 346                                 $s = Html::rawElement(
 347                                         'h2',
 348                                         [],
 349                                         $this->msg( 'ipb-otherblocks-header', count( $otherBlockMessages ) )->parse()
 350                                 ) . "\n";
 351
 352                                 $list = '';
 353
 354                                 foreach ( $otherBlockMessages as $link ) {
 355                                         $list .= Html::rawElement( 'li', [], $link ) . "\n";
 356                                 }
 357
 358                                 $s .= Html::rawElement(
 359                                         'ul',
 360                                         [ 'class' => 'mw-blockip-alreadyblocked' ],
 361                                         $list
 362                                 ) . "\n";
 363
 364                                 $text .= $s;
 365                         }
 366                 }
 367
 368                 return $text;
 369         }
 370
 371         /**
 372          * Add footer elements to the form
 373          * @return string
 374          */
 375         protected function postText() {
 376                 $links = [];
 377
 378                 $this->getOutput()->addModuleStyles( 'mediawiki.special' );
 379
 380                 $linkRenderer = $this->getLinkRenderer();
 381                 # Link to the user's contributions, if applicable
 382                 if ( $this->target instanceof User ) {
 383                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->target->getName() );
 384                         $links[] = $linkRenderer->makeLink(
 385                                 $contribsPage,
 386                                 $this->msg( 'ipb-blocklist-contribs', $this->target->getName() )->text()
 387                         );
 388                 }
 389
 390                 # Link to unblock the specified user, or to a blank unblock form
 391                 if ( $this->target instanceof User ) {
 392                         $message = $this->msg(
 393                                 'ipb-unblock-addr',
 394                                 wfEscapeWikiText( $this->target->getName() )
 395                         )->parse();
 396                         $list = SpecialPage::getTitleFor( 'Unblock', $this->target->getName() );
 397                 } else {
 398                         $message = $this->msg( 'ipb-unblock' )->parse();
 399                         $list = SpecialPage::getTitleFor( 'Unblock' );
 400                 }
 401                 $links[] = $linkRenderer->makeKnownLink(
 402                         $list,
 403                         new HtmlArmor( $message )
 404                 );
 405
 406                 # Link to the block list
 407                 $links[] = $linkRenderer->makeKnownLink(
 408                         SpecialPage::getTitleFor( 'BlockList' ),
 409                         $this->msg( 'ipb-blocklist' )->text()
 410                 );
 411
 412                 $user = $this->getUser();
 413
 414                 # Link to edit the block dropdown reasons, if applicable
 415                 if ( $user->isAllowed( 'editinterface' ) ) {
 416                         $links[] = $linkRenderer->makeKnownLink(
 417                                 $this->msg( 'ipbreason-dropdown' )->inContentLanguage()->getTitle(),
 418                                 $this->msg( 'ipb-edit-dropdown' )->text(),
 419                                 [],
 420                                 [ 'action' => 'edit' ]
 421                         );
 422                 }
 423
 424                 $text = Html::rawElement(
 425                         'p',
 426                         [ 'class' => 'mw-ipb-conveniencelinks' ],
 427                         $this->getLanguage()->pipeList( $links )
 428                 );
 429
 430                 $userTitle = self::getTargetUserTitle( $this->target );
 431                 if ( $userTitle ) {
 432                         # Get relevant extracts from the block and suppression logs, if possible
 433                         $out = '';
 434
 435                         LogEventsList::showLogExtract(
 436                                 $out,
 437                                 'block',
 438                                 $userTitle,
 439                                 '',
 440                                 [
 441                                         'lim' => 10,
 442                                         'msgKey' => [ 'blocklog-showlog', $userTitle->getText() ],
 443                                         'showIfEmpty' => false
 444                                 ]
 445                         );
 446                         $text .= $out;
 447
 448                         # Add suppression block entries if allowed
 449                         if ( $user->isAllowed( 'suppressionlog' ) ) {
 450                                 LogEventsList::showLogExtract(
 451                                         $out,
 452                                         'suppress',
 453                                         $userTitle,
 454                                         '',
 455                                         [
 456                                                 'lim' => 10,
 457                                                 'conds' => [ 'log_action' => [ 'block', 'reblock', 'unblock' ] ],
 458                                                 'msgKey' => [ 'blocklog-showsuppresslog', $userTitle->getText() ],
 459                                                 'showIfEmpty' => false
 460                                         ]
 461                                 );
 462
 463                                 $text .= $out;
 464                         }
 465                 }
 466
 467                 return $text;
 468         }
 469
 470         /**
 471          * Get a user page target for things like logs.
 472          * This handles account and IP range targets.
 473          * @param User|string $target
 474          * @return Title|null
 475          */
 476         protected static function getTargetUserTitle( $target ) {
 477                 if ( $target instanceof User ) {
 478                         return $target->getUserPage();
 479                 } elseif ( IP::isIPAddress( $target ) ) {
 480                         return Title::makeTitleSafe( NS_USER, $target );
 481                 }
 482
 483                 return null;
 484         }
 485
 486         /**
 487          * Determine the target of the block, and the type of target
 488          * @todo Should be in Block.php?
 489          * @param string $par Subpage parameter passed to setup, or data value from
 490          *     the HTMLForm
 491          * @param WebRequest $request Optionally try and get data from a request too
 492          * @return array [ User|string|null, Block::TYPE_ constant|null ]
 493          */
 494         public static function getTargetAndType( $par, WebRequest $request = null ) {
 495                 $i = 0;
 496                 $target = null;
 497
 498                 while ( true ) {
 499                         switch ( $i++ ) {
 500                                 case 0:
 501                                         # The HTMLForm will check wpTarget first and only if it doesn't get
 502                                         # a value use the default, which will be generated from the options
 503                                         # below; so this has to have a higher precedence here than $par, or
 504                                         # we could end up with different values in $this->target and the HTMLForm!
 505                                         if ( $request instanceof WebRequest ) {
 506                                                 $target = $request->getText( 'wpTarget', null );
 507                                         }
 508                                         break;
 509                                 case 1:
 510                                         $target = $par;
 511                                         break;
 512                                 case 2:
 513                                         if ( $request instanceof WebRequest ) {
 514                                                 $target = $request->getText( 'ip', null );
 515                                         }
 516                                         break;
 517                                 case 3:
 518                                         # B/C @since 1.18
 519                                         if ( $request instanceof WebRequest ) {
 520                                                 $target = $request->getText( 'wpBlockAddress', null );
 521                                         }
 522                                         break;
 523                                 case 4:
 524                                         break 2;
 525                         }
 526
 527                         list( $target, $type ) = Block::parseTarget( $target );
 528
 529                         if ( $type !== null ) {
 530                                 return [ $target, $type ];
 531                         }
 532                 }
 533
 534                 return [ null, null ];
 535         }
 536
 537         /**
 538          * HTMLForm field validation-callback for Target field.
 539          * @since 1.18
 540          * @param string $value
 541          * @param array $alldata
 542          * @param HTMLForm $form
 543          * @return Message
 544          */
 545         public static function validateTargetField( $value, $alldata, $form ) {
 546                 $status = self::validateTarget( $value, $form->getUser() );
 547                 if ( !$status->isOK() ) {
 548                         $errors = $status->getErrorsArray();
 549
 550                         return call_user_func_array( [ $form, 'msg' ], $errors[0] );
 551                 } else {
 552                         return true;
 553                 }
 554         }
 555
 556         /**
 557          * Validate a block target.
 558          *
 559          * @since 1.21
 560          * @param string $value Block target to check
 561          * @param User $user Performer of the block
 562          * @return Status
 563          */
 564         public static function validateTarget( $value, User $user ) {
 565                 global $wgBlockCIDRLimit;
 566
 567                 /** @var User $target */
 568                 list( $target, $type ) = self::getTargetAndType( $value );
 569                 $status = Status::newGood( $target );
 570
 571                 if ( $type == Block::TYPE_USER ) {
 572                         if ( $target->isAnon() ) {
 573                                 $status->fatal(
 574                                         'nosuchusershort',
 575                                         wfEscapeWikiText( $target->getName() )
 576                                 );
 577                         }
 578
 579                         $unblockStatus = self::checkUnblockSelf( $target, $user );
 580                         if ( $unblockStatus !== true ) {
 581                                 $status->fatal( 'badaccess', $unblockStatus );
 582                         }
 583                 } elseif ( $type == Block::TYPE_RANGE ) {
 584                         list( $ip, $range ) = explode( '/', $target, 2 );
 585
 586                         if (
 587                                 ( IP::isIPv4( $ip ) && $wgBlockCIDRLimit['IPv4'] == 32 ) ||
 588                                 ( IP::isIPv6( $ip ) && $wgBlockCIDRLimit['IPv6'] == 128 )
 589                         ) {
 590                                 // Range block effectively disabled
 591                                 $status->fatal( 'range_block_disabled' );
 592                         }
 593
 594                         if (
 595                                 ( IP::isIPv4( $ip ) && $range > 32 ) ||
 596                                 ( IP::isIPv6( $ip ) && $range > 128 )
 597                         ) {
 598                                 // Dodgy range
 599                                 $status->fatal( 'ip_range_invalid' );
 600                         }
 601
 602                         if ( IP::isIPv4( $ip ) && $range < $wgBlockCIDRLimit['IPv4'] ) {
 603                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 604                         }
 605
 606                         if ( IP::isIPv6( $ip ) && $range < $wgBlockCIDRLimit['IPv6'] ) {
 607                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 608                         }
 609                 } elseif ( $type == Block::TYPE_IP ) {
 610                         # All is well
 611                 } else {
 612                         $status->fatal( 'badipaddress' );
 613                 }
 614
 615                 return $status;
 616         }
 617
 618         /**
 619          * Given the form data, actually implement a block. This is also called from ApiBlock.
 620          *
 621          * @param array $data
 622          * @param IContextSource $context
 623          * @return bool|string
 624          */
 625         public static function processForm( array $data, IContextSource $context ) {
 626                 global $wgBlockAllowsUTEdit, $wgHideUserContribLimit;
 627
 628                 $performer = $context->getUser();
 629
 630                 // Handled by field validator callback
 631                 // self::validateTargetField( $data['Target'] );
 632
 633                 # This might have been a hidden field or a checkbox, so interesting data
 634                 # can come from it
 635                 $data['Confirm'] = !in_array( $data['Confirm'], [ '', '0', null, false ], true );
 636
 637                 /** @var User $target */
 638                 list( $target, $type ) = self::getTargetAndType( $data['Target'] );
 639                 if ( $type == Block::TYPE_USER ) {
 640                         $user = $target;
 641                         $target = $user->getName();
 642                         $userId = $user->getId();
 643
 644                         # Give admins a heads-up before they go and block themselves.  Much messier
 645                         # to do this for IPs, but it's pretty unlikely they'd ever get the 'block'
 646                         # permission anyway, although the code does allow for it.
 647                         # Note: Important to use $target instead of $data['Target']
 648                         # since both $data['PreviousTarget'] and $target are normalized
 649                         # but $data['target'] gets overridden by (non-normalized) request variable
 650                         # from previous request.
 651                         if ( $target === $performer->getName() &&
 652                                 ( $data['PreviousTarget'] !== $target || !$data['Confirm'] )
 653                         ) {
 654                                 return [ 'ipb-blockingself', 'ipb-confirmaction' ];
 655                         }
 656                 } elseif ( $type == Block::TYPE_RANGE ) {
 657                         $user = null;
 658                         $userId = 0;
 659                 } elseif ( $type == Block::TYPE_IP ) {
 660                         $user = null;
 661                         $target = $target->getName();
 662                         $userId = 0;
 663                 } else {
 664                         # This should have been caught in the form field validation
 665                         return [ 'badipaddress' ];
 666                 }
 667
 668                 $expiryTime = self::parseExpiryInput( $data['Expiry'] );
 669
 670                 if (
 671                         // an expiry time is needed
 672                         ( strlen( $data['Expiry'] ) == 0 ) ||
 673                         // can't be a larger string as 50 (it should be a time format in any way)
 674                         ( strlen( $data['Expiry'] ) > 50 ) ||
 675                         // check, if the time could be parsed
 676                         !$expiryTime
 677                 ) {
 678                         return [ 'ipb_expiry_invalid' ];
 679                 }
 680
 681                 // an expiry time should be in the future, not in the
 682                 // past (wouldn't make any sense) - bug T123069
 683                 if ( $expiryTime < wfTimestampNow() ) {
 684                         return [ 'ipb_expiry_old' ];
 685                 }
 686
 687                 if ( !isset( $data['DisableEmail'] ) ) {
 688                         $data['DisableEmail'] = false;
 689                 }
 690
 691                 # If the user has done the form 'properly', they won't even have been given the
 692                 # option to suppress-block unless they have the 'hideuser' permission
 693                 if ( !isset( $data['HideUser'] ) ) {
 694                         $data['HideUser'] = false;
 695                 }
 696
 697                 if ( $data['HideUser'] ) {
 698                         if ( !$performer->isAllowed( 'hideuser' ) ) {
 699                                 # this codepath is unreachable except by a malicious user spoofing forms,
 700                                 # or by race conditions (user has hideuser and block rights, loads block form,
 701                                 # and loses hideuser rights before submission); so need to fail completely
 702                                 # rather than just silently disable hiding
 703                                 return [ 'badaccess-group0' ];
 704                         }
 705
 706                         # Recheck params here...
 707                         if ( $type != Block::TYPE_USER ) {
 708                                 $data['HideUser'] = false; # IP users should not be hidden
 709                         } elseif ( !wfIsInfinity( $data['Expiry'] ) ) {
 710                                 # Bad expiry.
 711                                 return [ 'ipb_expiry_temp' ];
 712                         } elseif ( $wgHideUserContribLimit !== false
 713                                 && $user->getEditCount() > $wgHideUserContribLimit
 714                         ) {
 715                                 # Typically, the user should have a handful of edits.
 716                                 # Disallow hiding users with many edits for performance.
 717                                 return [ [ 'ipb_hide_invalid',
 718                                         Message::numParam( $wgHideUserContribLimit ) ] ];
 719                         } elseif ( !$data['Confirm'] ) {
 720                                 return [ 'ipb-confirmhideuser', 'ipb-confirmaction' ];
 721                         }
 722                 }
 723
 724                 # Create block object.
 725                 $block = new Block();
 726                 $block->setTarget( $target );
 727                 $block->setBlocker( $performer );
 728                 $block->mReason = $data['Reason'][0];
 729                 $block->mExpiry = $expiryTime;
 730                 $block->prevents( 'createaccount', $data['CreateAccount'] );
 731                 $block->prevents( 'editownusertalk', ( !$wgBlockAllowsUTEdit || $data['DisableUTEdit'] ) );
 732                 $block->prevents( 'sendemail', $data['DisableEmail'] );
 733                 $block->isHardblock( $data['HardBlock'] );
 734                 $block->isAutoblocking( $data['AutoBlock'] );
 735                 $block->mHideName = $data['HideUser'];
 736
 737                 $reason = [ 'hookaborted' ];
 738                 if ( !Hooks::run( 'BlockIp', [ &$block, &$performer, &$reason ] ) ) {
 739                         return $reason;
 740                 }
 741
 742                 $priorBlock = null;
 743                 # Try to insert block. Is there a conflicting block?
 744                 $status = $block->insert();
 745                 if ( !$status ) {
 746                         # Indicates whether the user is confirming the block and is aware of
 747                         # the conflict (did not change the block target in the meantime)
 748                         $blockNotConfirmed = !$data['Confirm'] || ( array_key_exists( 'PreviousTarget', $data )
 749                                 && $data['PreviousTarget'] !== $target );
 750
 751                         # Special case for API - T34434
 752                         $reblockNotAllowed = ( array_key_exists( 'Reblock', $data ) && !$data['Reblock'] );
 753
 754                         # Show form unless the user is already aware of this...
 755                         if ( $blockNotConfirmed || $reblockNotAllowed ) {
 756                                 return [ [ 'ipb_already_blocked', $block->getTarget() ] ];
 757                                 # Otherwise, try to update the block...
 758                         } else {
 759                                 # This returns direct blocks before autoblocks/rangeblocks, since we should
 760                                 # be sure the user is blocked by now it should work for our purposes
 761                                 $currentBlock = Block::newFromTarget( $target );
 762                                 if ( $block->equals( $currentBlock ) ) {
 763                                         return [ [ 'ipb_already_blocked', $block->getTarget() ] ];
 764                                 }
 765                                 # If the name was hidden and the blocking user cannot hide
 766                                 # names, then don't allow any block changes...
 767                                 if ( $currentBlock->mHideName && !$performer->isAllowed( 'hideuser' ) ) {
 768                                         return [ 'cant-see-hidden-user' ];
 769                                 }
 770
 771                                 $priorBlock = clone $currentBlock;
 772                                 $currentBlock->isHardblock( $block->isHardblock() );
 773                                 $currentBlock->prevents( 'createaccount', $block->prevents( 'createaccount' ) );
 774                                 $currentBlock->mExpiry = $block->mExpiry;
 775                                 $currentBlock->isAutoblocking( $block->isAutoblocking() );
 776                                 $currentBlock->mHideName = $block->mHideName;
 777                                 $currentBlock->prevents( 'sendemail', $block->prevents( 'sendemail' ) );
 778                                 $currentBlock->prevents( 'editownusertalk', $block->prevents( 'editownusertalk' ) );
 779                                 $currentBlock->mReason = $block->mReason;
 780
 781                                 $status = $currentBlock->update();
 782
 783                                 $logaction = 'reblock';
 784
 785                                 # Unset _deleted fields if requested
 786                                 if ( $currentBlock->mHideName && !$data['HideUser'] ) {
 787                                         RevisionDeleteUser::unsuppressUserName( $target, $userId );
 788                                 }
 789
 790                                 # If hiding/unhiding a name, this should go in the private logs
 791                                 if ( (bool)$currentBlock->mHideName ) {
 792                                         $data['HideUser'] = true;
 793                                 }
 794                         }
 795                 } else {
 796                         $logaction = 'block';
 797                 }
 798
 799                 Hooks::run( 'BlockIpComplete', [ $block, $performer, $priorBlock ] );
 800
 801                 # Set *_deleted fields if requested
 802                 if ( $data['HideUser'] ) {
 803                         RevisionDeleteUser::suppressUserName( $target, $userId );
 804                 }
 805
 806                 # Can't watch a rangeblock
 807                 if ( $type != Block::TYPE_RANGE && $data['Watch'] ) {
 808                         WatchAction::doWatch(
 809                                 Title::makeTitle( NS_USER, $target ),
 810                                 $performer,
 811                                 User::IGNORE_USER_RIGHTS
 812                         );
 813                 }
 814
 815                 # Block constructor sanitizes certain block options on insert
 816                 $data['BlockEmail'] = $block->prevents( 'sendemail' );
 817                 $data['AutoBlock'] = $block->isAutoblocking();
 818
 819                 # Prepare log parameters
 820                 $logParams = [];
 821                 $logParams['5::duration'] = $data['Expiry'];
 822                 $logParams['6::flags'] = self::blockLogFlags( $data, $type );
 823
 824                 # Make log entry, if the name is hidden, put it in the suppression log
 825                 $log_type = $data['HideUser'] ? 'suppress' : 'block';
 826                 $logEntry = new ManualLogEntry( $log_type, $logaction );
 827                 $logEntry->setTarget( Title::makeTitle( NS_USER, $target ) );
 828                 $logEntry->setComment( $data['Reason'][0] );
 829                 $logEntry->setPerformer( $performer );
 830                 $logEntry->setParameters( $logParams );
 831                 # Relate log ID to block IDs (T27763)
 832                 $blockIds = array_merge( [ $status['id'] ], $status['autoIds'] );
 833                 $logEntry->setRelations( [ 'ipb_id' => $blockIds ] );
 834                 $logId = $logEntry->insert();
 835
 836                 if ( !empty( $data['Tags'] ) ) {
 837                         $logEntry->setTags( $data['Tags'] );
 838                 }
 839
 840                 $logEntry->publish( $logId );
 841
 842                 return true;
 843         }
 844
 845         /**
 846          * Get an array of suggested block durations from MediaWiki:Ipboptions
 847          * @todo FIXME: This uses a rather odd syntax for the options, should it be converted
 848          *     to the standard "**<duration>|<displayname>" format?
 849          * @param Language|null $lang The language to get the durations in, or null to use
 850          *     the wiki's content language
 851          * @return array
 852          */
 853         public static function getSuggestedDurations( $lang = null ) {
 854                 $a = [];
 855                 $msg = $lang === null
 856                         ? wfMessage( 'ipboptions' )->inContentLanguage()->text()
 857                         : wfMessage( 'ipboptions' )->inLanguage( $lang )->text();
 858
 859                 if ( $msg == '-' ) {
 860                         return [];
 861                 }
 862
 863                 foreach ( explode( ',', $msg ) as $option ) {
 864                         if ( strpos( $option, ':' ) === false ) {
 865                                 $option = "$option:$option";
 866                         }
 867
 868                         list( $show, $value ) = explode( ':', $option );
 869                         $a[$show] = $value;
 870                 }
 871
 872                 return $a;
 873         }
 874
 875         /**
 876          * Convert a submitted expiry time, which may be relative ("2 weeks", etc) or absolute
 877          * ("24 May 2034", etc), into an absolute timestamp we can put into the database.
 878          * @param string $expiry Whatever was typed into the form
 879          * @return string Timestamp or 'infinity'
 880          */
 881         public static function parseExpiryInput( $expiry ) {
 882                 if ( wfIsInfinity( $expiry ) ) {
 883                         $expiry = 'infinity';
 884                 } else {
 885                         $expiry = strtotime( $expiry );
 886
 887                         if ( $expiry < 0 || $expiry === false ) {
 888                                 return false;
 889                         }
 890
 891                         $expiry = wfTimestamp( TS_MW, $expiry );
 892                 }
 893
 894                 return $expiry;
 895         }
 896
 897         /**
 898          * Can we do an email block?
 899          * @param User $user The sysop wanting to make a block
 900          * @return bool
 901          */
 902         public static function canBlockEmail( $user ) {
 903                 global $wgEnableUserEmail, $wgSysopEmailBans;
 904
 905                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 906         }
 907
 908         /**
 909          * T17810: blocked admins should not be able to block/unblock
 910          * others, and probably shouldn't be able to unblock themselves
 911          * either.
 912          * @param User|int|string $user
 913          * @param User $performer User doing the request
 914          * @return bool|string True or error message key
 915          */
 916         public static function checkUnblockSelf( $user, User $performer ) {
 917                 if ( is_int( $user ) ) {
 918                         $user = User::newFromId( $user );
 919                 } elseif ( is_string( $user ) ) {
 920                         $user = User::newFromName( $user );
 921                 }
 922
 923                 if ( $performer->isBlocked() ) {
 924                         if ( $user instanceof User && $user->getId() == $performer->getId() ) {
 925                                 # User is trying to unblock themselves
 926                                 if ( $performer->isAllowed( 'unblockself' ) ) {
 927                                         return true;
 928                                         # User blocked themselves and is now trying to reverse it
 929                                 } elseif ( $performer->blockedBy() === $performer->getName() ) {
 930                                         return true;
 931                                 } else {
 932                                         return 'ipbnounblockself';
 933                                 }
 934                         } else {
 935                                 # User is trying to block/unblock someone else
 936                                 return 'ipbblocked';
 937                         }
 938                 } else {
 939                         return true;
 940                 }
 941         }
 942
 943         /**
 944          * Return a comma-delimited list of "flags" to be passed to the log
 945          * reader for this block, to provide more information in the logs
 946          * @param array $data From HTMLForm data
 947          * @param int $type Block::TYPE_ constant (USER, RANGE, or IP)
 948          * @return string
 949          */
 950         protected static function blockLogFlags( array $data, $type ) {
 951                 global $wgBlockAllowsUTEdit;
 952                 $flags = [];
 953
 954                 # when blocking a user the option 'anononly' is not available/has no effect
 955                 # -> do not write this into log
 956                 if ( !$data['HardBlock'] && $type != Block::TYPE_USER ) {
 957                         // For grepping: message block-log-flags-anononly
 958                         $flags[] = 'anononly';
 959                 }
 960
 961                 if ( $data['CreateAccount'] ) {
 962                         // For grepping: message block-log-flags-nocreate
 963                         $flags[] = 'nocreate';
 964                 }
 965
 966                 # Same as anononly, this is not displayed when blocking an IP address
 967                 if ( !$data['AutoBlock'] && $type == Block::TYPE_USER ) {
 968                         // For grepping: message block-log-flags-noautoblock
 969                         $flags[] = 'noautoblock';
 970                 }
 971
 972                 if ( $data['DisableEmail'] ) {
 973                         // For grepping: message block-log-flags-noemail
 974                         $flags[] = 'noemail';
 975                 }
 976
 977                 if ( $wgBlockAllowsUTEdit && $data['DisableUTEdit'] ) {
 978                         // For grepping: message block-log-flags-nousertalk
 979                         $flags[] = 'nousertalk';
 980                 }
 981
 982                 if ( $data['HideUser'] ) {
 983                         // For grepping: message block-log-flags-hiddenname
 984                         $flags[] = 'hiddenname';
 985                 }
 986
 987                 return implode( ',', $flags );
 988         }
 989
 990         /**
 991          * Process the form on POST submission.
 992          * @param array $data
 993          * @param HTMLForm $form
 994          * @return bool|array True for success, false for didn't-try, array of errors on failure
 995          */
 996         public function onSubmit( array $data, HTMLForm $form = null ) {
 997                 return self::processForm( $data, $form->getContext() );
 998         }
 999
1000         /**
1001          * Do something exciting on successful processing of the form, most likely to show a
1002          * confirmation message
1003          */
1004         public function onSuccess() {
1005                 $out = $this->getOutput();
1006                 $out->setPageTitle( $this->msg( 'blockipsuccesssub' ) );
1007                 $out->addWikiMsg( 'blockipsuccesstext', wfEscapeWikiText( $this->target ) );
1008         }
1009
1010         /**
1011          * Return an array of subpages beginning with $search that this special page will accept.
1012          *
1013          * @param string $search Prefix to search for
1014          * @param int $limit Maximum number of results to return (usually 10)
1015          * @param int $offset Number of results to skip (usually 0)
1016          * @return string[] Matching subpages
1017          */
1018         public function prefixSearchSubpages( $search, $limit, $offset ) {
1019                 $user = User::newFromName( $search );
1020                 if ( !$user ) {
1021                         // No prefix suggestion for invalid user
1022                         return [];
1023                 }
1024                 // Autocomplete subpage as user list - public to allow caching
1025                 return UserNamePrefixSearch::search( 'public', $search, $limit, $offset );
1026         }
1027
1028         protected function getGroupName() {
1029                 return 'users';
1030         }
1031 }