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