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 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 = array();
  49
  50         public function __construct() {
  51                 parent::__construct( 'Block', 'block' );
  52         }
  53
  54         /**
  55          * Checks that the user can unblock themselves if they are trying to do so
  56          *
  57          * @param User $user
  58          * @throws ErrorPageError
  59          */
  60         protected function checkExecutePermissions( User $user ) {
  61                 parent::checkExecutePermissions( $user );
  62
  63                 # bug 15810: blocked admins should have limited access here
  64                 $status = self::checkUnblockSelf( $this->target, $user );
  65                 if ( $status !== true ) {
  66                         throw new ErrorPageError( 'badaccess', $status );
  67                 }
  68         }
  69
  70         /**
  71          * Handle some magic here
  72          *
  73          * @param string $par
  74          */
  75         protected function setParameter( $par ) {
  76                 # Extract variables from the request.  Try not to get into a situation where we
  77                 # need to extract *every* variable from the form just for processing here, but
  78                 # there are legitimate uses for some variables
  79                 $request = $this->getRequest();
  80                 list( $this->target, $this->type ) = self::getTargetAndType( $par, $request );
  81                 if ( $this->target instanceof User ) {
  82                         # Set the 'relevant user' in the skin, so it displays links like Contributions,
  83                         # User logs, UserRights, etc.
  84                         $this->getSkin()->setRelevantUser( $this->target );
  85                 }
  86
  87                 list( $this->previousTarget, /*...*/ ) =
  88                         Block::parseTarget( $request->getVal( 'wpPreviousTarget' ) );
  89                 $this->requestedHideUser = $request->getBool( 'wpHideUser' );
  90         }
  91
  92         /**
  93          * Customizes the HTMLForm a bit
  94          *
  95          * @param HTMLForm $form
  96          */
  97         protected function alterForm( HTMLForm $form ) {
  98                 $form->setWrapperLegendMsg( 'blockip-legend' );
  99                 $form->setHeaderText( '' );
 100                 $form->setSubmitCallback( array( __CLASS__, 'processUIForm' ) );
 101                 $form->setSubmitDestructive();
 102
 103                 $msg = $this->alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit';
 104                 $form->setSubmitTextMsg( $msg );
 105
 106                 # Don't need to do anything if the form has been posted
 107                 if ( !$this->getRequest()->wasPosted() && $this->preErrors ) {
 108                         $s = HTMLForm::formatErrors( $this->preErrors );
 109                         if ( $s ) {
 110                                 $form->addHeaderText( Html::rawElement(
 111                                         'div',
 112                                         array( 'class' => 'error' ),
 113                                         $s
 114                                 ) );
 115                         }
 116                 }
 117         }
 118
 119         /**
 120          * Get the HTMLForm descriptor array for the block form
 121          * @return array
 122          */
 123         protected function getFormFields() {
 124                 global $wgBlockAllowsUTEdit;
 125
 126                 $user = $this->getUser();
 127
 128                 $suggestedDurations = self::getSuggestedDurations();
 129
 130                 $a = array(
 131                         'Target' => array(
 132                                 'type' => 'text',
 133                                 'label-message' => 'ipaddressorusername',
 134                                 'id' => 'mw-bi-target',
 135                                 'size' => '45',
 136                                 'autofocus' => true,
 137                                 'required' => true,
 138                                 'validation-callback' => array( __CLASS__, 'validateTargetField' ),
 139                         ),
 140                         'Expiry' => array(
 141                                 'type' => !count( $suggestedDurations ) ? 'text' : 'selectorother',
 142                                 'label-message' => 'ipbexpiry',
 143                                 'required' => true,
 144                                 'options' => $suggestedDurations,
 145                                 'other' => $this->msg( 'ipbother' )->text(),
 146                                 'default' => $this->msg( 'ipb-default-expiry' )->inContentLanguage()->text(),
 147                         ),
 148                         'Reason' => array(
 149                                 'type' => 'selectandother',
 150                                 'label-message' => 'ipbreason',
 151                                 'options-message' => 'ipbreason-dropdown',
 152                         ),
 153                         'CreateAccount' => array(
 154                                 'type' => 'check',
 155                                 'label-message' => 'ipbcreateaccount',
 156                                 'default' => true,
 157                         ),
 158                 );
 159
 160                 if ( self::canBlockEmail( $user ) ) {
 161                         $a['DisableEmail'] = array(
 162                                 'type' => 'check',
 163                                 'label-message' => 'ipbemailban',
 164                         );
 165                 }
 166
 167                 if ( $wgBlockAllowsUTEdit ) {
 168                         $a['DisableUTEdit'] = array(
 169                                 'type' => 'check',
 170                                 'label-message' => 'ipb-disableusertalk',
 171                                 'default' => false,
 172                         );
 173                 }
 174
 175                 $a['AutoBlock'] = array(
 176                         'type' => 'check',
 177                         'label-message' => 'ipbenableautoblock',
 178                         'default' => true,
 179                 );
 180
 181                 # Allow some users to hide name from block log, blocklist and listusers
 182                 if ( $user->isAllowed( 'hideuser' ) ) {
 183                         $a['HideUser'] = array(
 184                                 'type' => 'check',
 185                                 'label-message' => 'ipbhidename',
 186                                 'cssclass' => 'mw-block-hideuser',
 187                         );
 188                 }
 189
 190                 # Watchlist their user page? (Only if user is logged in)
 191                 if ( $user->isLoggedIn() ) {
 192                         $a['Watch'] = array(
 193                                 'type' => 'check',
 194                                 'label-message' => 'ipbwatchuser',
 195                         );
 196                 }
 197
 198                 $a['HardBlock'] = array(
 199                         'type' => 'check',
 200                         'label-message' => 'ipb-hardblock',
 201                         'default' => false,
 202                 );
 203
 204                 # This is basically a copy of the Target field, but the user can't change it, so we
 205                 # can see if the warnings we maybe showed to the user before still apply
 206                 $a['PreviousTarget'] = array(
 207                         'type' => 'hidden',
 208                         'default' => false,
 209                 );
 210
 211                 # We'll turn this into a checkbox if we need to
 212                 $a['Confirm'] = array(
 213                         'type' => 'hidden',
 214                         'default' => '',
 215                         'label-message' => 'ipb-confirm',
 216                 );
 217
 218                 $this->maybeAlterFormDefaults( $a );
 219
 220                 // Allow extensions to add more fields
 221                 wfRunHooks( 'SpecialBlockModifyFormFields', array( $this, &$a ) );
 222
 223                 return $a;
 224         }
 225
 226         /**
 227          * If the user has already been blocked with similar settings, load that block
 228          * and change the defaults for the form fields to match the existing settings.
 229          * @param array $fields HTMLForm descriptor array
 230          * @return bool Whether fields were altered (that is, whether the target is
 231          *     already blocked)
 232          */
 233         protected function maybeAlterFormDefaults( &$fields ) {
 234                 # This will be overwritten by request data
 235                 $fields['Target']['default'] = (string)$this->target;
 236
 237                 # This won't be
 238                 $fields['PreviousTarget']['default'] = (string)$this->target;
 239
 240                 $block = Block::newFromTarget( $this->target );
 241
 242                 if ( $block instanceof Block && !$block->mAuto # The block exists and isn't an autoblock
 243                         && ( $this->type != Block::TYPE_RANGE # The block isn't a rangeblock
 244                                 || $block->getTarget() == $this->target ) # or if it is, the range is what we're about to block
 245                 ) {
 246                         $fields['HardBlock']['default'] = $block->isHardblock();
 247                         $fields['CreateAccount']['default'] = $block->prevents( 'createaccount' );
 248                         $fields['AutoBlock']['default'] = $block->isAutoblocking();
 249
 250                         if ( isset( $fields['DisableEmail'] ) ) {
 251                                 $fields['DisableEmail']['default'] = $block->prevents( 'sendemail' );
 252                         }
 253
 254                         if ( isset( $fields['HideUser'] ) ) {
 255                                 $fields['HideUser']['default'] = $block->mHideName;
 256                         }
 257
 258                         if ( isset( $fields['DisableUTEdit'] ) ) {
 259                                 $fields['DisableUTEdit']['default'] = $block->prevents( 'editownusertalk' );
 260                         }
 261
 262                         // If the username was hidden (ipb_deleted == 1), don't show the reason
 263                         // unless this user also has rights to hideuser: Bug 35839
 264                         if ( !$block->mHideName || $this->getUser()->isAllowed( 'hideuser' ) ) {
 265                                 $fields['Reason']['default'] = $block->mReason;
 266                         } else {
 267                                 $fields['Reason']['default'] = '';
 268                         }
 269
 270                         if ( $this->getRequest()->wasPosted() ) {
 271                                 # Ok, so we got a POST submission asking us to reblock a user.  So show the
 272                                 # confirm checkbox; the user will only see it if they haven't previously
 273                                 $fields['Confirm']['type'] = 'check';
 274                         } else {
 275                                 # We got a target, but it wasn't a POST request, so the user must have gone
 276                                 # to a link like [[Special:Block/User]].  We don't need to show the checkbox
 277                                 # as long as they go ahead and block *that* user
 278                                 $fields['Confirm']['default'] = 1;
 279                         }
 280
 281                         if ( $block->mExpiry == 'infinity' ) {
 282                                 $fields['Expiry']['default'] = 'infinite';
 283                         } else {
 284                                 $fields['Expiry']['default'] = wfTimestamp( TS_RFC2822, $block->mExpiry );
 285                         }
 286
 287                         $this->alreadyBlocked = true;
 288                         $this->preErrors[] = array( 'ipb-needreblock', wfEscapeWikiText( (string)$block->getTarget() ) );
 289                 }
 290
 291                 # We always need confirmation to do HideUser
 292                 if ( $this->requestedHideUser ) {
 293                         $fields['Confirm']['type'] = 'check';
 294                         unset( $fields['Confirm']['default'] );
 295                         $this->preErrors[] = array( 'ipb-confirmhideuser', 'ipb-confirmaction' );
 296                 }
 297
 298                 # Or if the user is trying to block themselves
 299                 if ( (string)$this->target === $this->getUser()->getName() ) {
 300                         $fields['Confirm']['type'] = 'check';
 301                         unset( $fields['Confirm']['default'] );
 302                         $this->preErrors[] = array( 'ipb-blockingself', 'ipb-confirmaction' );
 303                 }
 304         }
 305
 306         /**
 307          * Add header elements like block log entries, etc.
 308          * @return string
 309          */
 310         protected function preText() {
 311                 $this->getOutput()->addModules( 'mediawiki.special.block' );
 312
 313                 $text = $this->msg( 'blockiptext' )->parse();
 314
 315                 $otherBlockMessages = array();
 316                 if ( $this->target !== null ) {
 317                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 318                         wfRunHooks( 'OtherBlockLogLink', array( &$otherBlockMessages, $this->target ) );
 319
 320                         if ( count( $otherBlockMessages ) ) {
 321                                 $s = Html::rawElement(
 322                                         'h2',
 323                                         array(),
 324                                         $this->msg( 'ipb-otherblocks-header', count( $otherBlockMessages ) )->parse()
 325                                 ) . "\n";
 326
 327                                 $list = '';
 328
 329                                 foreach ( $otherBlockMessages as $link ) {
 330                                         $list .= Html::rawElement( 'li', array(), $link ) . "\n";
 331                                 }
 332
 333                                 $s .= Html::rawElement(
 334                                         'ul',
 335                                         array( 'class' => 'mw-blockip-alreadyblocked' ),
 336                                         $list
 337                                 ) . "\n";
 338
 339                                 $text .= $s;
 340                         }
 341                 }
 342
 343                 return $text;
 344         }
 345
 346         /**
 347          * Add footer elements to the form
 348          * @return string
 349          */
 350         protected function postText() {
 351                 $links = array();
 352
 353                 # Link to the user's contributions, if applicable
 354                 if ( $this->target instanceof User ) {
 355                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->target->getName() );
 356                         $links[] = Linker::link(
 357                                 $contribsPage,
 358                                 $this->msg( 'ipb-blocklist-contribs', $this->target->getName() )->escaped()
 359                         );
 360                 }
 361
 362                 # Link to unblock the specified user, or to a blank unblock form
 363                 if ( $this->target instanceof User ) {
 364                         $message = $this->msg(
 365                                 'ipb-unblock-addr',
 366                                 wfEscapeWikiText( $this->target->getName() )
 367                         )->parse();
 368                         $list = SpecialPage::getTitleFor( 'Unblock', $this->target->getName() );
 369                 } else {
 370                         $message = $this->msg( 'ipb-unblock' )->parse();
 371                         $list = SpecialPage::getTitleFor( 'Unblock' );
 372                 }
 373                 $links[] = Linker::linkKnown( $list, $message, array() );
 374
 375                 # Link to the block list
 376                 $links[] = Linker::linkKnown(
 377                         SpecialPage::getTitleFor( 'BlockList' ),
 378                         $this->msg( 'ipb-blocklist' )->escaped()
 379                 );
 380
 381                 $user = $this->getUser();
 382
 383                 # Link to edit the block dropdown reasons, if applicable
 384                 if ( $user->isAllowed( 'editinterface' ) ) {
 385                         $links[] = Linker::link(
 386                                 Title::makeTitle( NS_MEDIAWIKI, 'Ipbreason-dropdown' ),
 387                                 $this->msg( 'ipb-edit-dropdown' )->escaped(),
 388                                 array(),
 389                                 array( 'action' => 'edit' )
 390                         );
 391                 }
 392
 393                 $text = Html::rawElement(
 394                         'p',
 395                         array( 'class' => 'mw-ipb-conveniencelinks' ),
 396                         $this->getLanguage()->pipeList( $links )
 397                 );
 398
 399                 $userTitle = self::getTargetUserTitle( $this->target );
 400                 if ( $userTitle ) {
 401                         # Get relevant extracts from the block and suppression logs, if possible
 402                         $out = '';
 403
 404                         LogEventsList::showLogExtract(
 405                                 $out,
 406                                 'block',
 407                                 $userTitle,
 408                                 '',
 409                                 array(
 410                                         'lim' => 10,
 411                                         'msgKey' => array( 'blocklog-showlog', $userTitle->getText() ),
 412                                         'showIfEmpty' => false
 413                                 )
 414                         );
 415                         $text .= $out;
 416
 417                         # Add suppression block entries if allowed
 418                         if ( $user->isAllowed( 'suppressionlog' ) ) {
 419                                 LogEventsList::showLogExtract(
 420                                         $out,
 421                                         'suppress',
 422                                         $userTitle,
 423                                         '',
 424                                         array(
 425                                                 'lim' => 10,
 426                                                 'conds' => array( 'log_action' => array( 'block', 'reblock', 'unblock' ) ),
 427                                                 'msgKey' => array( 'blocklog-showsuppresslog', $userTitle->getText() ),
 428                                                 'showIfEmpty' => false
 429                                         )
 430                                 );
 431
 432                                 $text .= $out;
 433                         }
 434                 }
 435
 436                 return $text;
 437         }
 438
 439         /**
 440          * Get a user page target for things like logs.
 441          * This handles account and IP range targets.
 442          * @param User|string $target
 443          * @return Title|null
 444          */
 445         protected static function getTargetUserTitle( $target ) {
 446                 if ( $target instanceof User ) {
 447                         return $target->getUserPage();
 448                 } elseif ( IP::isIPAddress( $target ) ) {
 449                         return Title::makeTitleSafe( NS_USER, $target );
 450                 }
 451
 452                 return null;
 453         }
 454
 455         /**
 456          * Determine the target of the block, and the type of target
 457          * @todo Should be in Block.php?
 458          * @param string $par Subpage parameter passed to setup, or data value from
 459          *     the HTMLForm
 460          * @param WebRequest $request Optionally try and get data from a request too
 461          * @return array( User|string|null, Block::TYPE_ constant|null )
 462          */
 463         public static function getTargetAndType( $par, WebRequest $request = null ) {
 464                 $i = 0;
 465                 $target = null;
 466
 467                 while ( true ) {
 468                         switch ( $i++ ) {
 469                                 case 0:
 470                                         # The HTMLForm will check wpTarget first and only if it doesn't get
 471                                         # a value use the default, which will be generated from the options
 472                                         # below; so this has to have a higher precedence here than $par, or
 473                                         # we could end up with different values in $this->target and the HTMLForm!
 474                                         if ( $request instanceof WebRequest ) {
 475                                                 $target = $request->getText( 'wpTarget', null );
 476                                         }
 477                                         break;
 478                                 case 1:
 479                                         $target = $par;
 480                                         break;
 481                                 case 2:
 482                                         if ( $request instanceof WebRequest ) {
 483                                                 $target = $request->getText( 'ip', null );
 484                                         }
 485                                         break;
 486                                 case 3:
 487                                         # B/C @since 1.18
 488                                         if ( $request instanceof WebRequest ) {
 489                                                 $target = $request->getText( 'wpBlockAddress', null );
 490                                         }
 491                                         break;
 492                                 case 4:
 493                                         break 2;
 494                         }
 495
 496                         list( $target, $type ) = Block::parseTarget( $target );
 497
 498                         if ( $type !== null ) {
 499                                 return array( $target, $type );
 500                         }
 501                 }
 502
 503                 return array( null, null );
 504         }
 505
 506         /**
 507          * HTMLForm field validation-callback for Target field.
 508          * @since 1.18
 509          * @param string $value
 510          * @param array $alldata
 511          * @param HTMLForm $form
 512          * @return Message
 513          */
 514         public static function validateTargetField( $value, $alldata, $form ) {
 515                 $status = self::validateTarget( $value, $form->getUser() );
 516                 if ( !$status->isOK() ) {
 517                         $errors = $status->getErrorsArray();
 518
 519                         return call_user_func_array( array( $form, 'msg' ), $errors[0] );
 520                 } else {
 521                         return true;
 522                 }
 523         }
 524
 525         /**
 526          * Validate a block target.
 527          *
 528          * @since 1.21
 529          * @param string $value Block target to check
 530          * @param User $user Performer of the block
 531          * @return Status
 532          */
 533         public static function validateTarget( $value, User $user ) {
 534                 global $wgBlockCIDRLimit;
 535
 536                 /** @var User $target */
 537                 list( $target, $type ) = self::getTargetAndType( $value );
 538                 $status = Status::newGood( $target );
 539
 540                 if ( $type == Block::TYPE_USER ) {
 541                         if ( $target->isAnon() ) {
 542                                 $status->fatal(
 543                                         'nosuchusershort',
 544                                         wfEscapeWikiText( $target->getName() )
 545                                 );
 546                         }
 547
 548                         $unblockStatus = self::checkUnblockSelf( $target, $user );
 549                         if ( $unblockStatus !== true ) {
 550                                 $status->fatal( 'badaccess', $unblockStatus );
 551                         }
 552                 } elseif ( $type == Block::TYPE_RANGE ) {
 553                         list( $ip, $range ) = explode( '/', $target, 2 );
 554
 555                         if (
 556                                 ( IP::isIPv4( $ip ) && $wgBlockCIDRLimit['IPv4'] == 32 ) ||
 557                                 ( IP::isIPv6( $ip ) && $wgBlockCIDRLimit['IPv6'] == 128 )
 558                         ) {
 559                                 // Range block effectively disabled
 560                                 $status->fatal( 'range_block_disabled' );
 561                         }
 562
 563                         if (
 564                                 ( IP::isIPv4( $ip ) && $range > 32 ) ||
 565                                 ( IP::isIPv6( $ip ) && $range > 128 )
 566                         ) {
 567                                 // Dodgy range
 568                                 $status->fatal( 'ip_range_invalid' );
 569                         }
 570
 571                         if ( IP::isIPv4( $ip ) && $range < $wgBlockCIDRLimit['IPv4'] ) {
 572                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 573                         }
 574
 575                         if ( IP::isIPv6( $ip ) && $range < $wgBlockCIDRLimit['IPv6'] ) {
 576                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 577                         }
 578                 } elseif ( $type == Block::TYPE_IP ) {
 579                         # All is well
 580                 } else {
 581                         $status->fatal( 'badipaddress' );
 582                 }
 583
 584                 return $status;
 585         }
 586
 587         /**
 588          * Submit callback for an HTMLForm object, will simply pass
 589          * @param array $data
 590          * @param HTMLForm $form
 591          * @return bool|string
 592          */
 593         public static function processUIForm( array $data, HTMLForm $form ) {
 594                 return self::processForm( $data, $form->getContext() );
 595         }
 596
 597         /**
 598          * Given the form data, actually implement a block
 599          * @param array $data
 600          * @param IContextSource $context
 601          * @return bool|string
 602          */
 603         public static function processForm( array $data, IContextSource $context ) {
 604                 global $wgBlockAllowsUTEdit, $wgHideUserContribLimit, $wgContLang;
 605
 606                 $performer = $context->getUser();
 607
 608                 // Handled by field validator callback
 609                 // self::validateTargetField( $data['Target'] );
 610
 611                 # This might have been a hidden field or a checkbox, so interesting data
 612                 # can come from it
 613                 $data['Confirm'] = !in_array( $data['Confirm'], array( '', '0', null, false ), true );
 614
 615                 /** @var User $target */
 616                 list( $target, $type ) = self::getTargetAndType( $data['Target'] );
 617                 if ( $type == Block::TYPE_USER ) {
 618                         $user = $target;
 619                         $target = $user->getName();
 620                         $userId = $user->getId();
 621
 622                         # Give admins a heads-up before they go and block themselves.  Much messier
 623                         # to do this for IPs, but it's pretty unlikely they'd ever get the 'block'
 624                         # permission anyway, although the code does allow for it.
 625                         # Note: Important to use $target instead of $data['Target']
 626                         # since both $data['PreviousTarget'] and $target are normalized
 627                         # but $data['target'] gets overriden by (non-normalized) request variable
 628                         # from previous request.
 629                         if ( $target === $performer->getName() &&
 630                                 ( $data['PreviousTarget'] !== $target || !$data['Confirm'] )
 631                         ) {
 632                                 return array( 'ipb-blockingself', 'ipb-confirmaction' );
 633                         }
 634                 } elseif ( $type == Block::TYPE_RANGE ) {
 635                         $userId = 0;
 636                 } elseif ( $type == Block::TYPE_IP ) {
 637                         $target = $target->getName();
 638                         $userId = 0;
 639                 } else {
 640                         # This should have been caught in the form field validation
 641                         return array( 'badipaddress' );
 642                 }
 643
 644                 if ( ( strlen( $data['Expiry'] ) == 0 ) || ( strlen( $data['Expiry'] ) > 50 )
 645                         || !self::parseExpiryInput( $data['Expiry'] )
 646                 ) {
 647                         return array( 'ipb_expiry_invalid' );
 648                 }
 649
 650                 if ( !isset( $data['DisableEmail'] ) ) {
 651                         $data['DisableEmail'] = false;
 652                 }
 653
 654                 # If the user has done the form 'properly', they won't even have been given the
 655                 # option to suppress-block unless they have the 'hideuser' permission
 656                 if ( !isset( $data['HideUser'] ) ) {
 657                         $data['HideUser'] = false;
 658                 }
 659
 660                 if ( $data['HideUser'] ) {
 661                         if ( !$performer->isAllowed( 'hideuser' ) ) {
 662                                 # this codepath is unreachable except by a malicious user spoofing forms,
 663                                 # or by race conditions (user has oversight and sysop, loads block form,
 664                                 # and is de-oversighted before submission); so need to fail completely
 665                                 # rather than just silently disable hiding
 666                                 return array( 'badaccess-group0' );
 667                         }
 668
 669                         # Recheck params here...
 670                         if ( $type != Block::TYPE_USER ) {
 671                                 $data['HideUser'] = false; # IP users should not be hidden
 672                         } elseif ( !in_array( $data['Expiry'], array( 'infinite', 'infinity', 'indefinite' ) ) ) {
 673                                 # Bad expiry.
 674                                 return array( 'ipb_expiry_temp' );
 675                         } elseif ( $wgHideUserContribLimit !== false
 676                                 && $user->getEditCount() > $wgHideUserContribLimit
 677                         ) {
 678                                 # Typically, the user should have a handful of edits.
 679                                 # Disallow hiding users with many edits for performance.
 680                                 return array( array( 'ipb_hide_invalid',
 681                                         Message::numParam( $wgHideUserContribLimit ) ) );
 682                         } elseif ( !$data['Confirm'] ) {
 683                                 return array( 'ipb-confirmhideuser', 'ipb-confirmaction' );
 684                         }
 685                 }
 686
 687                 # Create block object.
 688                 $block = new Block();
 689                 $block->setTarget( $target );
 690                 $block->setBlocker( $performer );
 691                 # Truncate reason for whole multibyte characters
 692                 $block->mReason = $wgContLang->truncate( $data['Reason'][0], 255 );
 693                 $block->mExpiry = self::parseExpiryInput( $data['Expiry'] );
 694                 $block->prevents( 'createaccount', $data['CreateAccount'] );
 695                 $block->prevents( 'editownusertalk', ( !$wgBlockAllowsUTEdit || $data['DisableUTEdit'] ) );
 696                 $block->prevents( 'sendemail', $data['DisableEmail'] );
 697                 $block->isHardblock( $data['HardBlock'] );
 698                 $block->isAutoblocking( $data['AutoBlock'] );
 699                 $block->mHideName = $data['HideUser'];
 700
 701                 $reason = array( 'hookaborted' );
 702                 if ( !wfRunHooks( 'BlockIp', array( &$block, &$performer, &$reason ) ) ) {
 703                         return $reason;
 704                 }
 705
 706                 # Try to insert block. Is there a conflicting block?
 707                 $status = $block->insert();
 708                 if ( !$status ) {
 709                         # Indicates whether the user is confirming the block and is aware of
 710                         # the conflict (did not change the block target in the meantime)
 711                         $blockNotConfirmed = !$data['Confirm'] || ( array_key_exists( 'PreviousTarget', $data )
 712                                 && $data['PreviousTarget'] !== $target );
 713
 714                         # Special case for API - bug 32434
 715                         $reblockNotAllowed = ( array_key_exists( 'Reblock', $data ) && !$data['Reblock'] );
 716
 717                         # Show form unless the user is already aware of this...
 718                         if ( $blockNotConfirmed || $reblockNotAllowed ) {
 719                                 return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 720                                 # Otherwise, try to update the block...
 721                         } else {
 722                                 # This returns direct blocks before autoblocks/rangeblocks, since we should
 723                                 # be sure the user is blocked by now it should work for our purposes
 724                                 $currentBlock = Block::newFromTarget( $target );
 725
 726                                 if ( $block->equals( $currentBlock ) ) {
 727                                         return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 728                                 }
 729
 730                                 # If the name was hidden and the blocking user cannot hide
 731                                 # names, then don't allow any block changes...
 732                                 if ( $currentBlock->mHideName && !$performer->isAllowed( 'hideuser' ) ) {
 733                                         return array( 'cant-see-hidden-user' );
 734                                 }
 735
 736                                 $currentBlock->isHardblock( $block->isHardblock() );
 737                                 $currentBlock->prevents( 'createaccount', $block->prevents( 'createaccount' ) );
 738                                 $currentBlock->mExpiry = $block->mExpiry;
 739                                 $currentBlock->isAutoblocking( $block->isAutoblocking() );
 740                                 $currentBlock->mHideName = $block->mHideName;
 741                                 $currentBlock->prevents( 'sendemail', $block->prevents( 'sendemail' ) );
 742                                 $currentBlock->prevents( 'editownusertalk', $block->prevents( 'editownusertalk' ) );
 743                                 $currentBlock->mReason = $block->mReason;
 744
 745                                 $status = $currentBlock->update();
 746
 747                                 $logaction = 'reblock';
 748
 749                                 # Unset _deleted fields if requested
 750                                 if ( $currentBlock->mHideName && !$data['HideUser'] ) {
 751                                         RevisionDeleteUser::unsuppressUserName( $target, $userId );
 752                                 }
 753
 754                                 # If hiding/unhiding a name, this should go in the private logs
 755                                 if ( (bool)$currentBlock->mHideName ) {
 756                                         $data['HideUser'] = true;
 757                                 }
 758                         }
 759                 } else {
 760                         $logaction = 'block';
 761                 }
 762
 763                 wfRunHooks( 'BlockIpComplete', array( $block, $performer ) );
 764
 765                 # Set *_deleted fields if requested
 766                 if ( $data['HideUser'] ) {
 767                         RevisionDeleteUser::suppressUserName( $target, $userId );
 768                 }
 769
 770                 # Can't watch a rangeblock
 771                 if ( $type != Block::TYPE_RANGE && $data['Watch'] ) {
 772                         WatchAction::doWatch(
 773                                 Title::makeTitle( NS_USER, $target ),
 774                                 $performer,
 775                                 WatchedItem::IGNORE_USER_RIGHTS
 776                         );
 777                 }
 778
 779                 # Block constructor sanitizes certain block options on insert
 780                 $data['BlockEmail'] = $block->prevents( 'sendemail' );
 781                 $data['AutoBlock'] = $block->isAutoblocking();
 782
 783                 # Prepare log parameters
 784                 $logParams = array();
 785                 $logParams[] = $data['Expiry'];
 786                 $logParams[] = self::blockLogFlags( $data, $type );
 787
 788                 # Make log entry, if the name is hidden, put it in the oversight log
 789                 $log_type = $data['HideUser'] ? 'suppress' : 'block';
 790                 $log = new LogPage( $log_type );
 791                 $log_id = $log->addEntry(
 792                         $logaction,
 793                         Title::makeTitle( NS_USER, $target ),
 794                         $data['Reason'][0],
 795                         $logParams,
 796                         $performer
 797                 );
 798                 # Relate log ID to block IDs (bug 25763)
 799                 $blockIds = array_merge( array( $status['id'] ), $status['autoIds'] );
 800                 $log->addRelations( 'ipb_id', $blockIds, $log_id );
 801
 802                 # Report to the user
 803                 return true;
 804         }
 805
 806         /**
 807          * Get an array of suggested block durations from MediaWiki:Ipboptions
 808          * @todo FIXME: This uses a rather odd syntax for the options, should it be converted
 809          *     to the standard "**<duration>|<displayname>" format?
 810          * @param Language|null $lang The language to get the durations in, or null to use
 811          *     the wiki's content language
 812          * @return array
 813          */
 814         public static function getSuggestedDurations( $lang = null ) {
 815                 $a = array();
 816                 $msg = $lang === null
 817                         ? wfMessage( 'ipboptions' )->inContentLanguage()->text()
 818                         : wfMessage( 'ipboptions' )->inLanguage( $lang )->text();
 819
 820                 if ( $msg == '-' ) {
 821                         return array();
 822                 }
 823
 824                 foreach ( explode( ',', $msg ) as $option ) {
 825                         if ( strpos( $option, ':' ) === false ) {
 826                                 $option = "$option:$option";
 827                         }
 828
 829                         list( $show, $value ) = explode( ':', $option );
 830                         $a[htmlspecialchars( $show )] = htmlspecialchars( $value );
 831                 }
 832
 833                 return $a;
 834         }
 835
 836         /**
 837          * Convert a submitted expiry time, which may be relative ("2 weeks", etc) or absolute
 838          * ("24 May 2034", etc), into an absolute timestamp we can put into the database.
 839          * @param string $expiry Whatever was typed into the form
 840          * @return string Timestamp or "infinity" string for the DB implementation
 841          */
 842         public static function parseExpiryInput( $expiry ) {
 843                 static $infinity;
 844                 if ( $infinity == null ) {
 845                         $infinity = wfGetDB( DB_SLAVE )->getInfinity();
 846                 }
 847
 848                 if ( $expiry == 'infinite' || $expiry == 'indefinite' ) {
 849                         $expiry = $infinity;
 850                 } else {
 851                         $expiry = strtotime( $expiry );
 852
 853                         if ( $expiry < 0 || $expiry === false ) {
 854                                 return false;
 855                         }
 856
 857                         $expiry = wfTimestamp( TS_MW, $expiry );
 858                 }
 859
 860                 return $expiry;
 861         }
 862
 863         /**
 864          * Can we do an email block?
 865          * @param User $user The sysop wanting to make a block
 866          * @return bool
 867          */
 868         public static function canBlockEmail( $user ) {
 869                 global $wgEnableUserEmail, $wgSysopEmailBans;
 870
 871                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 872         }
 873
 874         /**
 875          * bug 15810: blocked admins should not be able to block/unblock
 876          * others, and probably shouldn't be able to unblock themselves
 877          * either.
 878          * @param User|int|string $user
 879          * @param User $performer User doing the request
 880          * @return bool|string True or error message key
 881          */
 882         public static function checkUnblockSelf( $user, User $performer ) {
 883                 if ( is_int( $user ) ) {
 884                         $user = User::newFromId( $user );
 885                 } elseif ( is_string( $user ) ) {
 886                         $user = User::newFromName( $user );
 887                 }
 888
 889                 if ( $performer->isBlocked() ) {
 890                         if ( $user instanceof User && $user->getId() == $performer->getId() ) {
 891                                 # User is trying to unblock themselves
 892                                 if ( $performer->isAllowed( 'unblockself' ) ) {
 893                                         return true;
 894                                         # User blocked themselves and is now trying to reverse it
 895                                 } elseif ( $performer->blockedBy() === $performer->getName() ) {
 896                                         return true;
 897                                 } else {
 898                                         return 'ipbnounblockself';
 899                                 }
 900                         } else {
 901                                 # User is trying to block/unblock someone else
 902                                 return 'ipbblocked';
 903                         }
 904                 } else {
 905                         return true;
 906                 }
 907         }
 908
 909         /**
 910          * Return a comma-delimited list of "flags" to be passed to the log
 911          * reader for this block, to provide more information in the logs
 912          * @param array $data From HTMLForm data
 913          * @param int $type Block::TYPE_ constant (USER, RANGE, or IP)
 914          * @return string
 915          */
 916         protected static function blockLogFlags( array $data, $type ) {
 917                 global $wgBlockAllowsUTEdit;
 918                 $flags = array();
 919
 920                 # when blocking a user the option 'anononly' is not available/has no effect
 921                 # -> do not write this into log
 922                 if ( !$data['HardBlock'] && $type != Block::TYPE_USER ) {
 923                         // For grepping: message block-log-flags-anononly
 924                         $flags[] = 'anononly';
 925                 }
 926
 927                 if ( $data['CreateAccount'] ) {
 928                         // For grepping: message block-log-flags-nocreate
 929                         $flags[] = 'nocreate';
 930                 }
 931
 932                 # Same as anononly, this is not displayed when blocking an IP address
 933                 if ( !$data['AutoBlock'] && $type == Block::TYPE_USER ) {
 934                         // For grepping: message block-log-flags-noautoblock
 935                         $flags[] = 'noautoblock';
 936                 }
 937
 938                 if ( $data['DisableEmail'] ) {
 939                         // For grepping: message block-log-flags-noemail
 940                         $flags[] = 'noemail';
 941                 }
 942
 943                 if ( $wgBlockAllowsUTEdit && $data['DisableUTEdit'] ) {
 944                         // For grepping: message block-log-flags-nousertalk
 945                         $flags[] = 'nousertalk';
 946                 }
 947
 948                 if ( $data['HideUser'] ) {
 949                         // For grepping: message block-log-flags-hiddenname
 950                         $flags[] = 'hiddenname';
 951                 }
 952
 953                 return implode( ',', $flags );
 954         }
 955
 956         /**
 957          * Process the form on POST submission.
 958          * @param array $data
 959          * @return bool|array True for success, false for didn't-try, array of errors on failure
 960          */
 961         public function onSubmit( array $data ) {
 962                 // This isn't used since we need that HTMLForm that's passed in the
 963                 // second parameter. See alterForm for the real function
 964         }
 965
 966         /**
 967          * Do something exciting on successful processing of the form, most likely to show a
 968          * confirmation message
 969          */
 970         public function onSuccess() {
 971                 $out = $this->getOutput();
 972                 $out->setPageTitle( $this->msg( 'blockipsuccesssub' ) );
 973                 $out->addWikiMsg( 'blockipsuccesstext', wfEscapeWikiText( $this->target ) );
 974         }
 975
 976         protected function getGroupName() {
 977                 return 'users';
 978         }
 979 }