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                 # bug 15810: 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->setWrapperLegendMsg( 'blockip-legend' );
 103                 $form->setHeaderText( '' );
 104                 $form->setSubmitDestructive();
 105
 106                 $msg = $this->alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit';
 107                 $form->setSubmitTextMsg( $msg );
 108
 109                 $this->addHelpLink( 'Help:Blocking users' );
 110
 111                 # Don't need to do anything if the form has been posted
 112                 if ( !$this->getRequest()->wasPosted() && $this->preErrors ) {
 113                         $s = $form->formatErrors( $this->preErrors );
 114                         if ( $s ) {
 115                                 $form->addHeaderText( Html::rawElement(
 116                                         'div',
 117                                         [ 'class' => 'error' ],
 118                                         $s
 119                                 ) );
 120                         }
 121                 }
 122         }
 123
 124         /**
 125          * Get the HTMLForm descriptor array for the block form
 126          * @return array
 127          */
 128         protected function getFormFields() {
 129                 global $wgBlockAllowsUTEdit;
 130                 if ( !wfMessage( 'ipbreason-dropdown' )->inContentLanguage()->isDisabled() ) {
 131                         $reasonsList = Xml::getArrayFromWikiTextList(
 132                                 wfMessage( 'ipbreason-dropdown' )->inContentLanguage()->text()
 133                         );
 134                         $this->getOutput()->addModules( 'mediawiki.reasonSuggest' );
 135                         $this->getOutput()->addJsConfigVars( [
 136                                 'reasons' => $reasonsList
 137                         ] );
 138                 }
 139                 $user = $this->getUser();
 140
 141                 $suggestedDurations = self::getSuggestedDurations();
 142
 143                 $a = [
 144                         'Target' => [
 145                                 'type' => 'text',
 146                                 'label-message' => 'ipaddressorusername',
 147                                 'id' => 'mw-bi-target',
 148                                 'size' => '45',
 149                                 'autofocus' => true,
 150                                 'required' => true,
 151                                 'validation-callback' => [ __CLASS__, 'validateTargetField' ],
 152                                 'cssclass' => 'mw-autocomplete-user', // used by mediawiki.userSuggest
 153                         ],
 154                         'Expiry' => [
 155                                 'type' => !count( $suggestedDurations ) ? 'text' : 'selectorother',
 156                                 'label-message' => 'ipbexpiry',
 157                                 'required' => true,
 158                                 'options' => $suggestedDurations,
 159                                 'other' => $this->msg( 'ipbother' )->text(),
 160                                 'default' => $this->msg( 'ipb-default-expiry' )->inContentLanguage()->text(),
 161                         ],
 162                         'Reason' => [
 163                                 'type' => 'selectandother',
 164                                 'maxlength' => 255,
 165                                 'label-message' => 'ipbreason',
 166                                 'options-message' => 'ipbreason-dropdown',
 167                         ],
 168                         'CreateAccount' => [
 169                                 'type' => 'check',
 170                                 'label-message' => 'ipbcreateaccount',
 171                                 'default' => true,
 172                         ],
 173                 ];
 174
 175                 if ( self::canBlockEmail( $user ) ) {
 176                         $a['DisableEmail'] = [
 177                                 'type' => 'check',
 178                                 'label-message' => 'ipbemailban',
 179                         ];
 180                 }
 181
 182                 if ( $wgBlockAllowsUTEdit ) {
 183                         $a['DisableUTEdit'] = [
 184                                 'type' => 'check',
 185                                 'label-message' => 'ipb-disableusertalk',
 186                                 'default' => false,
 187                         ];
 188                 }
 189
 190                 $a['AutoBlock'] = [
 191                         'type' => 'check',
 192                         'label-message' => 'ipbenableautoblock',
 193                         'default' => true,
 194                 ];
 195
 196                 # Allow some users to hide name from block log, blocklist and listusers
 197                 if ( $user->isAllowed( 'hideuser' ) ) {
 198                         $a['HideUser'] = [
 199                                 'type' => 'check',
 200                                 'label-message' => 'ipbhidename',
 201                                 'cssclass' => 'mw-block-hideuser',
 202                         ];
 203                 }
 204
 205                 # Watchlist their user page? (Only if user is logged in)
 206                 if ( $user->isLoggedIn() ) {
 207                         $a['Watch'] = [
 208                                 'type' => 'check',
 209                                 'label-message' => 'ipbwatchuser',
 210                         ];
 211                 }
 212
 213                 $a['HardBlock'] = [
 214                         'type' => 'check',
 215                         'label-message' => 'ipb-hardblock',
 216                         'default' => false,
 217                 ];
 218
 219                 # This is basically a copy of the Target field, but the user can't change it, so we
 220                 # can see if the warnings we maybe showed to the user before still apply
 221                 $a['PreviousTarget'] = [
 222                         'type' => 'hidden',
 223                         'default' => false,
 224                 ];
 225
 226                 # We'll turn this into a checkbox if we need to
 227                 $a['Confirm'] = [
 228                         'type' => 'hidden',
 229                         'default' => '',
 230                         'label-message' => 'ipb-confirm',
 231                 ];
 232
 233                 $this->maybeAlterFormDefaults( $a );
 234
 235                 // Allow extensions to add more fields
 236                 Hooks::run( 'SpecialBlockModifyFormFields', [ $this, &$a ] );
 237
 238                 return $a;
 239         }
 240
 241         /**
 242          * If the user has already been blocked with similar settings, load that block
 243          * and change the defaults for the form fields to match the existing settings.
 244          * @param array $fields HTMLForm descriptor array
 245          * @return bool Whether fields were altered (that is, whether the target is
 246          *     already blocked)
 247          */
 248         protected function maybeAlterFormDefaults( &$fields ) {
 249                 # This will be overwritten by request data
 250                 $fields['Target']['default'] = (string)$this->target;
 251
 252                 if ( $this->target ) {
 253                         $status = self::validateTarget( $this->target, $this->getUser() );
 254                         if ( !$status->isOK() ) {
 255                                 $errors = $status->getErrorsArray();
 256                                 $this->preErrors = array_merge( $this->preErrors, $errors );
 257                         }
 258                 }
 259
 260                 # This won't be
 261                 $fields['PreviousTarget']['default'] = (string)$this->target;
 262
 263                 $block = Block::newFromTarget( $this->target );
 264
 265                 if ( $block instanceof Block && !$block->mAuto # The block exists and isn't an autoblock
 266                         && ( $this->type != Block::TYPE_RANGE # The block isn't a rangeblock
 267                                 || $block->getTarget() == $this->target ) # or if it is, the range is what we're about to block
 268                 ) {
 269                         $fields['HardBlock']['default'] = $block->isHardblock();
 270                         $fields['CreateAccount']['default'] = $block->prevents( 'createaccount' );
 271                         $fields['AutoBlock']['default'] = $block->isAutoblocking();
 272
 273                         if ( isset( $fields['DisableEmail'] ) ) {
 274                                 $fields['DisableEmail']['default'] = $block->prevents( 'sendemail' );
 275                         }
 276
 277                         if ( isset( $fields['HideUser'] ) ) {
 278                                 $fields['HideUser']['default'] = $block->mHideName;
 279                         }
 280
 281                         if ( isset( $fields['DisableUTEdit'] ) ) {
 282                                 $fields['DisableUTEdit']['default'] = $block->prevents( 'editownusertalk' );
 283                         }
 284
 285                         // If the username was hidden (ipb_deleted == 1), don't show the reason
 286                         // unless this user also has rights to hideuser: Bug 35839
 287                         if ( !$block->mHideName || $this->getUser()->isAllowed( 'hideuser' ) ) {
 288                                 $fields['Reason']['default'] = $block->mReason;
 289                         } else {
 290                                 $fields['Reason']['default'] = '';
 291                         }
 292
 293                         if ( $this->getRequest()->wasPosted() ) {
 294                                 # Ok, so we got a POST submission asking us to reblock a user.  So show the
 295                                 # confirm checkbox; the user will only see it if they haven't previously
 296                                 $fields['Confirm']['type'] = 'check';
 297                         } else {
 298                                 # We got a target, but it wasn't a POST request, so the user must have gone
 299                                 # to a link like [[Special:Block/User]].  We don't need to show the checkbox
 300                                 # as long as they go ahead and block *that* user
 301                                 $fields['Confirm']['default'] = 1;
 302                         }
 303
 304                         if ( $block->mExpiry == 'infinity' ) {
 305                                 $fields['Expiry']['default'] = 'infinite';
 306                         } else {
 307                                 $fields['Expiry']['default'] = wfTimestamp( TS_RFC2822, $block->mExpiry );
 308                         }
 309
 310                         $this->alreadyBlocked = true;
 311                         $this->preErrors[] = [ 'ipb-needreblock', wfEscapeWikiText( (string)$block->getTarget() ) ];
 312                 }
 313
 314                 # We always need confirmation to do HideUser
 315                 if ( $this->requestedHideUser ) {
 316                         $fields['Confirm']['type'] = 'check';
 317                         unset( $fields['Confirm']['default'] );
 318                         $this->preErrors[] = [ 'ipb-confirmhideuser', 'ipb-confirmaction' ];
 319                 }
 320
 321                 # Or if the user is trying to block themselves
 322                 if ( (string)$this->target === $this->getUser()->getName() ) {
 323                         $fields['Confirm']['type'] = 'check';
 324                         unset( $fields['Confirm']['default'] );
 325                         $this->preErrors[] = [ 'ipb-blockingself', 'ipb-confirmaction' ];
 326                 }
 327         }
 328
 329         /**
 330          * Add header elements like block log entries, etc.
 331          * @return string
 332          */
 333         protected function preText() {
 334                 $this->getOutput()->addModules( [ 'mediawiki.special.block', 'mediawiki.userSuggest' ] );
 335
 336                 $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' );
 337                 $text = $this->msg( 'blockiptext', $blockCIDRLimit['IPv4'], $blockCIDRLimit['IPv6'] )->parse();
 338
 339                 $otherBlockMessages = [];
 340                 if ( $this->target !== null ) {
 341                         $targetName = $this->target;
 342                         if ( $this->target instanceof User ) {
 343                                 $targetName = $this->target->getName();
 344                         }
 345                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 346                         Hooks::run( 'OtherBlockLogLink', [ &$otherBlockMessages, $targetName ] );
 347
 348                         if ( count( $otherBlockMessages ) ) {
 349                                 $s = Html::rawElement(
 350                                         'h2',
 351                                         [],
 352                                         $this->msg( 'ipb-otherblocks-header', count( $otherBlockMessages ) )->parse()
 353                                 ) . "\n";
 354
 355                                 $list = '';
 356
 357                                 foreach ( $otherBlockMessages as $link ) {
 358                                         $list .= Html::rawElement( 'li', [], $link ) . "\n";
 359                                 }
 360
 361                                 $s .= Html::rawElement(
 362                                         'ul',
 363                                         [ 'class' => 'mw-blockip-alreadyblocked' ],
 364                                         $list
 365                                 ) . "\n";
 366
 367                                 $text .= $s;
 368                         }
 369                 }
 370
 371                 return $text;
 372         }
 373
 374         /**
 375          * Add footer elements to the form
 376          * @return string
 377          */
 378         protected function postText() {
 379                 $links = [];
 380
 381                 $this->getOutput()->addModuleStyles( 'mediawiki.special' );
 382
 383                 $linkRenderer = $this->getLinkRenderer();
 384                 # Link to the user's contributions, if applicable
 385                 if ( $this->target instanceof User ) {
 386                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->target->getName() );
 387                         $links[] = $linkRenderer->makeLink(
 388                                 $contribsPage,
 389                                 $this->msg( 'ipb-blocklist-contribs', $this->target->getName() )->text()
 390                         );
 391                 }
 392
 393                 # Link to unblock the specified user, or to a blank unblock form
 394                 if ( $this->target instanceof User ) {
 395                         $message = $this->msg(
 396                                 'ipb-unblock-addr',
 397                                 wfEscapeWikiText( $this->target->getName() )
 398                         )->parse();
 399                         $list = SpecialPage::getTitleFor( 'Unblock', $this->target->getName() );
 400                 } else {
 401                         $message = $this->msg( 'ipb-unblock' )->parse();
 402                         $list = SpecialPage::getTitleFor( 'Unblock' );
 403                 }
 404                 $links[] = $linkRenderer->makeKnownLink(
 405                         $list,
 406                         new HtmlArmor( $message )
 407                 );
 408
 409                 # Link to the block list
 410                 $links[] = $linkRenderer->makeKnownLink(
 411                         SpecialPage::getTitleFor( 'BlockList' ),
 412                         $this->msg( 'ipb-blocklist' )->text()
 413                 );
 414
 415                 $user = $this->getUser();
 416
 417                 # Link to edit the block dropdown reasons, if applicable
 418                 if ( $user->isAllowed( 'editinterface' ) ) {
 419                         $links[] = $linkRenderer->makeKnownLink(
 420                                 $this->msg( 'ipbreason-dropdown' )->inContentLanguage()->getTitle(),
 421                                 $this->msg( 'ipb-edit-dropdown' )->text(),
 422                                 [],
 423                                 [ 'action' => 'edit' ]
 424                         );
 425                 }
 426
 427                 $text = Html::rawElement(
 428                         'p',
 429                         [ 'class' => 'mw-ipb-conveniencelinks' ],
 430                         $this->getLanguage()->pipeList( $links )
 431                 );
 432
 433                 $userTitle = self::getTargetUserTitle( $this->target );
 434                 if ( $userTitle ) {
 435                         # Get relevant extracts from the block and suppression logs, if possible
 436                         $out = '';
 437
 438                         LogEventsList::showLogExtract(
 439                                 $out,
 440                                 'block',
 441                                 $userTitle,
 442                                 '',
 443                                 [
 444                                         'lim' => 10,
 445                                         'msgKey' => [ 'blocklog-showlog', $userTitle->getText() ],
 446                                         'showIfEmpty' => false
 447                                 ]
 448                         );
 449                         $text .= $out;
 450
 451                         # Add suppression block entries if allowed
 452                         if ( $user->isAllowed( 'suppressionlog' ) ) {
 453                                 LogEventsList::showLogExtract(
 454                                         $out,
 455                                         'suppress',
 456                                         $userTitle,
 457                                         '',
 458                                         [
 459                                                 'lim' => 10,
 460                                                 'conds' => [ 'log_action' => [ 'block', 'reblock', 'unblock' ] ],
 461                                                 'msgKey' => [ 'blocklog-showsuppresslog', $userTitle->getText() ],
 462                                                 'showIfEmpty' => false
 463                                         ]
 464                                 );
 465
 466                                 $text .= $out;
 467                         }
 468                 }
 469
 470                 return $text;
 471         }
 472
 473         /**
 474          * Get a user page target for things like logs.
 475          * This handles account and IP range targets.
 476          * @param User|string $target
 477          * @return Title|null
 478          */
 479         protected static function getTargetUserTitle( $target ) {
 480                 if ( $target instanceof User ) {
 481                         return $target->getUserPage();
 482                 } elseif ( IP::isIPAddress( $target ) ) {
 483                         return Title::makeTitleSafe( NS_USER, $target );
 484                 }
 485
 486                 return null;
 487         }
 488
 489         /**
 490          * Determine the target of the block, and the type of target
 491          * @todo Should be in Block.php?
 492          * @param string $par Subpage parameter passed to setup, or data value from
 493          *     the HTMLForm
 494          * @param WebRequest $request Optionally try and get data from a request too
 495          * @return array( User|string|null, Block::TYPE_ constant|null )
 496          */
 497         public static function getTargetAndType( $par, WebRequest $request = null ) {
 498                 $i = 0;
 499                 $target = null;
 500
 501                 while ( true ) {
 502                         switch ( $i++ ) {
 503                                 case 0:
 504                                         # The HTMLForm will check wpTarget first and only if it doesn't get
 505                                         # a value use the default, which will be generated from the options
 506                                         # below; so this has to have a higher precedence here than $par, or
 507                                         # we could end up with different values in $this->target and the HTMLForm!
 508                                         if ( $request instanceof WebRequest ) {
 509                                                 $target = $request->getText( 'wpTarget', null );
 510                                         }
 511                                         break;
 512                                 case 1:
 513                                         $target = $par;
 514                                         break;
 515                                 case 2:
 516                                         if ( $request instanceof WebRequest ) {
 517                                                 $target = $request->getText( 'ip', null );
 518                                         }
 519                                         break;
 520                                 case 3:
 521                                         # B/C @since 1.18
 522                                         if ( $request instanceof WebRequest ) {
 523                                                 $target = $request->getText( 'wpBlockAddress', null );
 524                                         }
 525                                         break;
 526                                 case 4:
 527                                         break 2;
 528                         }
 529
 530                         list( $target, $type ) = Block::parseTarget( $target );
 531
 532                         if ( $type !== null ) {
 533                                 return [ $target, $type ];
 534                         }
 535                 }
 536
 537                 return [ null, null ];
 538         }
 539
 540         /**
 541          * HTMLForm field validation-callback for Target field.
 542          * @since 1.18
 543          * @param string $value
 544          * @param array $alldata
 545          * @param HTMLForm $form
 546          * @return Message
 547          */
 548         public static function validateTargetField( $value, $alldata, $form ) {
 549                 $status = self::validateTarget( $value, $form->getUser() );
 550                 if ( !$status->isOK() ) {
 551                         $errors = $status->getErrorsArray();
 552
 553                         return call_user_func_array( [ $form, 'msg' ], $errors[0] );
 554                 } else {
 555                         return true;
 556                 }
 557         }
 558
 559         /**
 560          * Validate a block target.
 561          *
 562          * @since 1.21
 563          * @param string $value Block target to check
 564          * @param User $user Performer of the block
 565          * @return Status
 566          */
 567         public static function validateTarget( $value, User $user ) {
 568                 global $wgBlockCIDRLimit;
 569
 570                 /** @var User $target */
 571                 list( $target, $type ) = self::getTargetAndType( $value );
 572                 $status = Status::newGood( $target );
 573
 574                 if ( $type == Block::TYPE_USER ) {
 575                         if ( $target->isAnon() ) {
 576                                 $status->fatal(
 577                                         'nosuchusershort',
 578                                         wfEscapeWikiText( $target->getName() )
 579                                 );
 580                         }
 581
 582                         $unblockStatus = self::checkUnblockSelf( $target, $user );
 583                         if ( $unblockStatus !== true ) {
 584                                 $status->fatal( 'badaccess', $unblockStatus );
 585                         }
 586                 } elseif ( $type == Block::TYPE_RANGE ) {
 587                         list( $ip, $range ) = explode( '/', $target, 2 );
 588
 589                         if (
 590                                 ( IP::isIPv4( $ip ) && $wgBlockCIDRLimit['IPv4'] == 32 ) ||
 591                                 ( IP::isIPv6( $ip ) && $wgBlockCIDRLimit['IPv6'] == 128 )
 592                         ) {
 593                                 // Range block effectively disabled
 594                                 $status->fatal( 'range_block_disabled' );
 595                         }
 596
 597                         if (
 598                                 ( IP::isIPv4( $ip ) && $range > 32 ) ||
 599                                 ( IP::isIPv6( $ip ) && $range > 128 )
 600                         ) {
 601                                 // Dodgy range
 602                                 $status->fatal( 'ip_range_invalid' );
 603                         }
 604
 605                         if ( IP::isIPv4( $ip ) && $range < $wgBlockCIDRLimit['IPv4'] ) {
 606                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 607                         }
 608
 609                         if ( IP::isIPv6( $ip ) && $range < $wgBlockCIDRLimit['IPv6'] ) {
 610                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 611                         }
 612                 } elseif ( $type == Block::TYPE_IP ) {
 613                         # All is well
 614                 } else {
 615                         $status->fatal( 'badipaddress' );
 616                 }
 617
 618                 return $status;
 619         }
 620
 621         /**
 622          * Given the form data, actually implement a block. This is also called from ApiBlock.
 623          *
 624          * @param array $data
 625          * @param IContextSource $context
 626          * @return bool|string
 627          */
 628         public static function processForm( array $data, IContextSource $context ) {
 629                 global $wgBlockAllowsUTEdit, $wgHideUserContribLimit, $wgContLang;
 630
 631                 $performer = $context->getUser();
 632
 633                 // Handled by field validator callback
 634                 // self::validateTargetField( $data['Target'] );
 635
 636                 # This might have been a hidden field or a checkbox, so interesting data
 637                 # can come from it
 638                 $data['Confirm'] = !in_array( $data['Confirm'], [ '', '0', null, false ], true );
 639
 640                 /** @var User $target */
 641                 list( $target, $type ) = self::getTargetAndType( $data['Target'] );
 642                 if ( $type == Block::TYPE_USER ) {
 643                         $user = $target;
 644                         $target = $user->getName();
 645                         $userId = $user->getId();
 646
 647                         # Give admins a heads-up before they go and block themselves.  Much messier
 648                         # to do this for IPs, but it's pretty unlikely they'd ever get the 'block'
 649                         # permission anyway, although the code does allow for it.
 650                         # Note: Important to use $target instead of $data['Target']
 651                         # since both $data['PreviousTarget'] and $target are normalized
 652                         # but $data['target'] gets overridden by (non-normalized) request variable
 653                         # from previous request.
 654                         if ( $target === $performer->getName() &&
 655                                 ( $data['PreviousTarget'] !== $target || !$data['Confirm'] )
 656                         ) {
 657                                 return [ 'ipb-blockingself', 'ipb-confirmaction' ];
 658                         }
 659                 } elseif ( $type == Block::TYPE_RANGE ) {
 660                         $user = null;
 661                         $userId = 0;
 662                 } elseif ( $type == Block::TYPE_IP ) {
 663                         $user = null;
 664                         $target = $target->getName();
 665                         $userId = 0;
 666                 } else {
 667                         # This should have been caught in the form field validation
 668                         return [ 'badipaddress' ];
 669                 }
 670
 671                 $expiryTime = self::parseExpiryInput( $data['Expiry'] );
 672
 673                 if (
 674                         // an expiry time is needed
 675                         ( strlen( $data['Expiry'] ) == 0 ) ||
 676                         // can't be a larger string as 50 (it should be a time format in any way)
 677                         ( strlen( $data['Expiry'] ) > 50 ) ||
 678                         // check, if the time could be parsed
 679                         !$expiryTime
 680                 ) {
 681                         return [ 'ipb_expiry_invalid' ];
 682                 }
 683
 684                 // an expiry time should be in the future, not in the
 685                 // past (wouldn't make any sense) - bug T123069
 686                 if ( $expiryTime < wfTimestampNow() ) {
 687                         return [ 'ipb_expiry_old' ];
 688                 }
 689
 690                 if ( !isset( $data['DisableEmail'] ) ) {
 691                         $data['DisableEmail'] = false;
 692                 }
 693
 694                 # If the user has done the form 'properly', they won't even have been given the
 695                 # option to suppress-block unless they have the 'hideuser' permission
 696                 if ( !isset( $data['HideUser'] ) ) {
 697                         $data['HideUser'] = false;
 698                 }
 699
 700                 if ( $data['HideUser'] ) {
 701                         if ( !$performer->isAllowed( 'hideuser' ) ) {
 702                                 # this codepath is unreachable except by a malicious user spoofing forms,
 703                                 # or by race conditions (user has hideuser and block rights, loads block form,
 704                                 # and loses hideuser rights before submission); so need to fail completely
 705                                 # rather than just silently disable hiding
 706                                 return [ 'badaccess-group0' ];
 707                         }
 708
 709                         # Recheck params here...
 710                         if ( $type != Block::TYPE_USER ) {
 711                                 $data['HideUser'] = false; # IP users should not be hidden
 712                         } elseif ( !wfIsInfinity( $data['Expiry'] ) ) {
 713                                 # Bad expiry.
 714                                 return [ 'ipb_expiry_temp' ];
 715                         } elseif ( $wgHideUserContribLimit !== false
 716                                 && $user->getEditCount() > $wgHideUserContribLimit
 717                         ) {
 718                                 # Typically, the user should have a handful of edits.
 719                                 # Disallow hiding users with many edits for performance.
 720                                 return [ [ 'ipb_hide_invalid',
 721                                         Message::numParam( $wgHideUserContribLimit ) ] ];
 722                         } elseif ( !$data['Confirm'] ) {
 723                                 return [ 'ipb-confirmhideuser', 'ipb-confirmaction' ];
 724                         }
 725                 }
 726
 727                 # Create block object.
 728                 $block = new Block();
 729                 $block->setTarget( $target );
 730                 $block->setBlocker( $performer );
 731                 # Truncate reason for whole multibyte characters
 732                 $block->mReason = $wgContLang->truncate( $data['Reason'][0], 255 );
 733                 $block->mExpiry = $expiryTime;
 734                 $block->prevents( 'createaccount', $data['CreateAccount'] );
 735                 $block->prevents( 'editownusertalk', ( !$wgBlockAllowsUTEdit || $data['DisableUTEdit'] ) );
 736                 $block->prevents( 'sendemail', $data['DisableEmail'] );
 737                 $block->isHardblock( $data['HardBlock'] );
 738                 $block->isAutoblocking( $data['AutoBlock'] );
 739                 $block->mHideName = $data['HideUser'];
 740
 741                 $reason = [ 'hookaborted' ];
 742                 if ( !Hooks::run( 'BlockIp', [ &$block, &$performer, &$reason ] ) ) {
 743                         return $reason;
 744                 }
 745
 746                 $priorBlock = null;
 747                 # Try to insert block. Is there a conflicting block?
 748                 $status = $block->insert();
 749                 if ( !$status ) {
 750                         # Indicates whether the user is confirming the block and is aware of
 751                         # the conflict (did not change the block target in the meantime)
 752                         $blockNotConfirmed = !$data['Confirm'] || ( array_key_exists( 'PreviousTarget', $data )
 753                                 && $data['PreviousTarget'] !== $target );
 754
 755                         # Special case for API - bug 32434
 756                         $reblockNotAllowed = ( array_key_exists( 'Reblock', $data ) && !$data['Reblock'] );
 757
 758                         # Show form unless the user is already aware of this...
 759                         if ( $blockNotConfirmed || $reblockNotAllowed ) {
 760                                 return [ [ 'ipb_already_blocked', $block->getTarget() ] ];
 761                                 # Otherwise, try to update the block...
 762                         } else {
 763                                 # This returns direct blocks before autoblocks/rangeblocks, since we should
 764                                 # be sure the user is blocked by now it should work for our purposes
 765                                 $currentBlock = Block::newFromTarget( $target );
 766                                 if ( $block->equals( $currentBlock ) ) {
 767                                         return [ [ 'ipb_already_blocked', $block->getTarget() ] ];
 768                                 }
 769                                 # If the name was hidden and the blocking user cannot hide
 770                                 # names, then don't allow any block changes...
 771                                 if ( $currentBlock->mHideName && !$performer->isAllowed( 'hideuser' ) ) {
 772                                         return [ 'cant-see-hidden-user' ];
 773                                 }
 774
 775                                 $priorBlock = clone $currentBlock;
 776                                 $currentBlock->isHardblock( $block->isHardblock() );
 777                                 $currentBlock->prevents( 'createaccount', $block->prevents( 'createaccount' ) );
 778                                 $currentBlock->mExpiry = $block->mExpiry;
 779                                 $currentBlock->isAutoblocking( $block->isAutoblocking() );
 780                                 $currentBlock->mHideName = $block->mHideName;
 781                                 $currentBlock->prevents( 'sendemail', $block->prevents( 'sendemail' ) );
 782                                 $currentBlock->prevents( 'editownusertalk', $block->prevents( 'editownusertalk' ) );
 783                                 $currentBlock->mReason = $block->mReason;
 784
 785                                 $status = $currentBlock->update();
 786
 787                                 $logaction = 'reblock';
 788
 789                                 # Unset _deleted fields if requested
 790                                 if ( $currentBlock->mHideName && !$data['HideUser'] ) {
 791                                         RevisionDeleteUser::unsuppressUserName( $target, $userId );
 792                                 }
 793
 794                                 # If hiding/unhiding a name, this should go in the private logs
 795                                 if ( (bool)$currentBlock->mHideName ) {
 796                                         $data['HideUser'] = true;
 797                                 }
 798                         }
 799                 } else {
 800                         $logaction = 'block';
 801                 }
 802
 803                 Hooks::run( 'BlockIpComplete', [ $block, $performer, $priorBlock ] );
 804
 805                 # Set *_deleted fields if requested
 806                 if ( $data['HideUser'] ) {
 807                         RevisionDeleteUser::suppressUserName( $target, $userId );
 808                 }
 809
 810                 # Can't watch a rangeblock
 811                 if ( $type != Block::TYPE_RANGE && $data['Watch'] ) {
 812                         WatchAction::doWatch(
 813                                 Title::makeTitle( NS_USER, $target ),
 814                                 $performer,
 815                                 User::IGNORE_USER_RIGHTS
 816                         );
 817                 }
 818
 819                 # Block constructor sanitizes certain block options on insert
 820                 $data['BlockEmail'] = $block->prevents( 'sendemail' );
 821                 $data['AutoBlock'] = $block->isAutoblocking();
 822
 823                 # Prepare log parameters
 824                 $logParams = [];
 825                 $logParams['5::duration'] = $data['Expiry'];
 826                 $logParams['6::flags'] = self::blockLogFlags( $data, $type );
 827
 828                 # Make log entry, if the name is hidden, put it in the suppression log
 829                 $log_type = $data['HideUser'] ? 'suppress' : 'block';
 830                 $logEntry = new ManualLogEntry( $log_type, $logaction );
 831                 $logEntry->setTarget( Title::makeTitle( NS_USER, $target ) );
 832                 $logEntry->setComment( $data['Reason'][0] );
 833                 $logEntry->setPerformer( $performer );
 834                 $logEntry->setParameters( $logParams );
 835                 # Relate log ID to block IDs (bug 25763)
 836                 $blockIds = array_merge( [ $status['id'] ], $status['autoIds'] );
 837                 $logEntry->setRelations( [ 'ipb_id' => $blockIds ] );
 838                 $logId = $logEntry->insert();
 839
 840                 if ( count( $data['Tags'] ) ) {
 841                         $logEntry->setTags( $data['Tags'] );
 842                 }
 843
 844                 $logEntry->publish( $logId );
 845
 846                 return true;
 847         }
 848
 849         /**
 850          * Get an array of suggested block durations from MediaWiki:Ipboptions
 851          * @todo FIXME: This uses a rather odd syntax for the options, should it be converted
 852          *     to the standard "**<duration>|<displayname>" format?
 853          * @param Language|null $lang The language to get the durations in, or null to use
 854          *     the wiki's content language
 855          * @return array
 856          */
 857         public static function getSuggestedDurations( $lang = null ) {
 858                 $a = [];
 859                 $msg = $lang === null
 860                         ? wfMessage( 'ipboptions' )->inContentLanguage()->text()
 861                         : wfMessage( 'ipboptions' )->inLanguage( $lang )->text();
 862
 863                 if ( $msg == '-' ) {
 864                         return [];
 865                 }
 866
 867                 foreach ( explode( ',', $msg ) as $option ) {
 868                         if ( strpos( $option, ':' ) === false ) {
 869                                 $option = "$option:$option";
 870                         }
 871
 872                         list( $show, $value ) = explode( ':', $option );
 873                         $a[$show] = $value;
 874                 }
 875
 876                 return $a;
 877         }
 878
 879         /**
 880          * Convert a submitted expiry time, which may be relative ("2 weeks", etc) or absolute
 881          * ("24 May 2034", etc), into an absolute timestamp we can put into the database.
 882          * @param string $expiry Whatever was typed into the form
 883          * @return string Timestamp or 'infinity'
 884          */
 885         public static function parseExpiryInput( $expiry ) {
 886                 if ( wfIsInfinity( $expiry ) ) {
 887                         $expiry = 'infinity';
 888                 } else {
 889                         $expiry = strtotime( $expiry );
 890
 891                         if ( $expiry < 0 || $expiry === false ) {
 892                                 return false;
 893                         }
 894
 895                         $expiry = wfTimestamp( TS_MW, $expiry );
 896                 }
 897
 898                 return $expiry;
 899         }
 900
 901         /**
 902          * Can we do an email block?
 903          * @param User $user The sysop wanting to make a block
 904          * @return bool
 905          */
 906         public static function canBlockEmail( $user ) {
 907                 global $wgEnableUserEmail, $wgSysopEmailBans;
 908
 909                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 910         }
 911
 912         /**
 913          * bug 15810: blocked admins should not be able to block/unblock
 914          * others, and probably shouldn't be able to unblock themselves
 915          * either.
 916          * @param User|int|string $user
 917          * @param User $performer User doing the request
 918          * @return bool|string True or error message key
 919          */
 920         public static function checkUnblockSelf( $user, User $performer ) {
 921                 if ( is_int( $user ) ) {
 922                         $user = User::newFromId( $user );
 923                 } elseif ( is_string( $user ) ) {
 924                         $user = User::newFromName( $user );
 925                 }
 926
 927                 if ( $performer->isBlocked() ) {
 928                         if ( $user instanceof User && $user->getId() == $performer->getId() ) {
 929                                 # User is trying to unblock themselves
 930                                 if ( $performer->isAllowed( 'unblockself' ) ) {
 931                                         return true;
 932                                         # User blocked themselves and is now trying to reverse it
 933                                 } elseif ( $performer->blockedBy() === $performer->getName() ) {
 934                                         return true;
 935                                 } else {
 936                                         return 'ipbnounblockself';
 937                                 }
 938                         } else {
 939                                 # User is trying to block/unblock someone else
 940                                 return 'ipbblocked';
 941                         }
 942                 } else {
 943                         return true;
 944                 }
 945         }
 946
 947         /**
 948          * Return a comma-delimited list of "flags" to be passed to the log
 949          * reader for this block, to provide more information in the logs
 950          * @param array $data From HTMLForm data
 951          * @param int $type Block::TYPE_ constant (USER, RANGE, or IP)
 952          * @return string
 953          */
 954         protected static function blockLogFlags( array $data, $type ) {
 955                 global $wgBlockAllowsUTEdit;
 956                 $flags = [];
 957
 958                 # when blocking a user the option 'anononly' is not available/has no effect
 959                 # -> do not write this into log
 960                 if ( !$data['HardBlock'] && $type != Block::TYPE_USER ) {
 961                         // For grepping: message block-log-flags-anononly
 962                         $flags[] = 'anononly';
 963                 }
 964
 965                 if ( $data['CreateAccount'] ) {
 966                         // For grepping: message block-log-flags-nocreate
 967                         $flags[] = 'nocreate';
 968                 }
 969
 970                 # Same as anononly, this is not displayed when blocking an IP address
 971                 if ( !$data['AutoBlock'] && $type == Block::TYPE_USER ) {
 972                         // For grepping: message block-log-flags-noautoblock
 973                         $flags[] = 'noautoblock';
 974                 }
 975
 976                 if ( $data['DisableEmail'] ) {
 977                         // For grepping: message block-log-flags-noemail
 978                         $flags[] = 'noemail';
 979                 }
 980
 981                 if ( $wgBlockAllowsUTEdit && $data['DisableUTEdit'] ) {
 982                         // For grepping: message block-log-flags-nousertalk
 983                         $flags[] = 'nousertalk';
 984                 }
 985
 986                 if ( $data['HideUser'] ) {
 987                         // For grepping: message block-log-flags-hiddenname
 988                         $flags[] = 'hiddenname';
 989                 }
 990
 991                 return implode( ',', $flags );
 992         }
 993
 994         /**
 995          * Process the form on POST submission.
 996          * @param array $data
 997          * @param HTMLForm $form
 998          * @return bool|array True for success, false for didn't-try, array of errors on failure
 999          */
1000         public function onSubmit( array $data, HTMLForm $form = null ) {
1001                 return self::processForm( $data, $form->getContext() );
1002         }
1003
1004         /**
1005          * Do something exciting on successful processing of the form, most likely to show a
1006          * confirmation message
1007          */
1008         public function onSuccess() {
1009                 $out = $this->getOutput();
1010                 $out->setPageTitle( $this->msg( 'blockipsuccesssub' ) );
1011                 $out->addWikiMsg( 'blockipsuccesstext', wfEscapeWikiText( $this->target ) );
1012         }
1013
1014         /**
1015          * Return an array of subpages beginning with $search that this special page will accept.
1016          *
1017          * @param string $search Prefix to search for
1018          * @param int $limit Maximum number of results to return (usually 10)
1019          * @param int $offset Number of results to skip (usually 0)
1020          * @return string[] Matching subpages
1021          */
1022         public function prefixSearchSubpages( $search, $limit, $offset ) {
1023                 $user = User::newFromName( $search );
1024                 if ( !$user ) {
1025                         // No prefix suggestion for invalid user
1026                         return [];
1027                 }
1028                 // Autocomplete subpage as user list - public to allow caching
1029                 return UserNamePrefixSearch::search( 'public', $search, $limit, $offset );
1030         }
1031
1032         protected function getGroupName() {
1033                 return 'users';
1034         }
1035 }