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