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 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 $par String
  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, /*...*/ ) = Block::parseTarget( $request->getVal( 'wpPreviousTarget' ) );
  88                 $this->requestedHideUser = $request->getBool( 'wpHideUser' );
  89         }
  90
  91         /**
  92          * Customizes the HTMLForm a bit
  93          *
  94          * @param $form HTMLForm
  95          */
  96         protected function alterForm( HTMLForm $form ) {
  97                 $form->setWrapperLegendMsg( 'blockip-legend' );
  98                 $form->setHeaderText( '' );
  99                 $form->setSubmitCallback( array( __CLASS__, 'processUIForm' ) );
 100
 101                 $msg = $this->alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit';
 102                 $form->setSubmitTextMsg( $msg );
 103
 104                 # Don't need to do anything if the form has been posted
 105                 if ( !$this->getRequest()->wasPosted() && $this->preErrors ) {
 106                         $s = HTMLForm::formatErrors( $this->preErrors );
 107                         if ( $s ) {
 108                                 $form->addHeaderText( Html::rawElement(
 109                                         'div',
 110                                         array( 'class' => 'error' ),
 111                                         $s
 112                                 ) );
 113                         }
 114                 }
 115         }
 116
 117         /**
 118          * Get the HTMLForm descriptor array for the block form
 119          * @return Array
 120          */
 121         protected function getFormFields() {
 122                 global $wgBlockAllowsUTEdit;
 123
 124                 $user = $this->getUser();
 125
 126                 $suggestedDurations = self::getSuggestedDurations();
 127
 128                 $a = array(
 129                         'Target' => array(
 130                                 'type' => 'text',
 131                                 'label-message' => 'ipadressorusername',
 132                                 'tabindex' => '1',
 133                                 'id' => 'mw-bi-target',
 134                                 'size' => '45',
 135                                 'autofocus' => true,
 136                                 'required' => true,
 137                                 'validation-callback' => array( __CLASS__, 'validateTargetField' ),
 138                         ),
 139                         'Expiry' => array(
 140                                 'type' => !count( $suggestedDurations ) ? 'text' : 'selectorother',
 141                                 'label-message' => 'ipbexpiry',
 142                                 'required' => true,
 143                                 'tabindex' => '2',
 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( 'ipb-unblock-addr', wfEscapeWikiText( $this->target->getName() ) )->parse();
 365                         $list = SpecialPage::getTitleFor( 'Unblock', $this->target->getName() );
 366                 } else {
 367                         $message = $this->msg( 'ipb-unblock' )->parse();
 368                         $list = SpecialPage::getTitleFor( 'Unblock' );
 369                 }
 370                 $links[] = Linker::linkKnown( $list, $message, array() );
 371
 372                 # Link to the block list
 373                 $links[] = Linker::linkKnown(
 374                         SpecialPage::getTitleFor( 'BlockList' ),
 375                         $this->msg( 'ipb-blocklist' )->escaped()
 376                 );
 377
 378                 $user = $this->getUser();
 379
 380                 # Link to edit the block dropdown reasons, if applicable
 381                 if ( $user->isAllowed( 'editinterface' ) ) {
 382                         $links[] = Linker::link(
 383                                 Title::makeTitle( NS_MEDIAWIKI, 'Ipbreason-dropdown' ),
 384                                 $this->msg( 'ipb-edit-dropdown' )->escaped(),
 385                                 array(),
 386                                 array( 'action' => 'edit' )
 387                         );
 388                 }
 389
 390                 $text = Html::rawElement(
 391                         'p',
 392                         array( 'class' => 'mw-ipb-conveniencelinks' ),
 393                         $this->getLanguage()->pipeList( $links )
 394                 );
 395
 396                 $userTitle = self::getTargetUserTitle( $this->target );
 397                 if ( $userTitle ) {
 398                         # Get relevant extracts from the block and suppression logs, if possible
 399                         $out = '';
 400
 401                         LogEventsList::showLogExtract(
 402                                 $out,
 403                                 'block',
 404                                 $userTitle,
 405                                 '',
 406                                 array(
 407                                         'lim' => 10,
 408                                         'msgKey' => array( 'blocklog-showlog', $userTitle->getText() ),
 409                                         'showIfEmpty' => false
 410                                 )
 411                         );
 412                         $text .= $out;
 413
 414                         # Add suppression block entries if allowed
 415                         if ( $user->isAllowed( 'suppressionlog' ) ) {
 416                                 LogEventsList::showLogExtract(
 417                                         $out,
 418                                         'suppress',
 419                                         $userTitle,
 420                                         '',
 421                                         array(
 422                                                 'lim' => 10,
 423                                                 'conds' => array( 'log_action' => array( 'block', 'reblock', 'unblock' ) ),
 424                                                 'msgKey' => array( 'blocklog-showsuppresslog', $userTitle->getText() ),
 425                                                 'showIfEmpty' => false
 426                                         )
 427                                 );
 428
 429                                 $text .= $out;
 430                         }
 431                 }
 432
 433                 return $text;
 434         }
 435
 436         /**
 437          * Get a user page target for things like logs.
 438          * This handles account and IP range targets.
 439          * @param $target User|string
 440          * @return Title|null
 441          */
 442         protected static function getTargetUserTitle( $target ) {
 443                 if ( $target instanceof User ) {
 444                         return $target->getUserPage();
 445                 } elseif ( IP::isIPAddress( $target ) ) {
 446                         return Title::makeTitleSafe( NS_USER, $target );
 447                 }
 448
 449                 return null;
 450         }
 451
 452         /**
 453          * Determine the target of the block, and the type of target
 454          * TODO: should be in Block.php?
 455          * @param string $par subpage parameter passed to setup, or data value from
 456          *     the HTMLForm
 457          * @param $request WebRequest optionally try and get data from a request too
 458          * @return array( User|string|null, Block::TYPE_ constant|null )
 459          */
 460         public static function getTargetAndType( $par, WebRequest $request = null ) {
 461                 $i = 0;
 462                 $target = null;
 463
 464                 while ( true ) {
 465                         switch ( $i++ ) {
 466                                 case 0:
 467                                         # The HTMLForm will check wpTarget first and only if it doesn't get
 468                                         # a value use the default, which will be generated from the options
 469                                         # below; so this has to have a higher precedence here than $par, or
 470                                         # we could end up with different values in $this->target and the HTMLForm!
 471                                         if ( $request instanceof WebRequest ) {
 472                                                 $target = $request->getText( 'wpTarget', null );
 473                                         }
 474                                         break;
 475                                 case 1:
 476                                         $target = $par;
 477                                         break;
 478                                 case 2:
 479                                         if ( $request instanceof WebRequest ) {
 480                                                 $target = $request->getText( 'ip', null );
 481                                         }
 482                                         break;
 483                                 case 3:
 484                                         # B/C @since 1.18
 485                                         if ( $request instanceof WebRequest ) {
 486                                                 $target = $request->getText( 'wpBlockAddress', null );
 487                                         }
 488                                         break;
 489                                 case 4:
 490                                         break 2;
 491                         }
 492
 493                         list( $target, $type ) = Block::parseTarget( $target );
 494
 495                         if ( $type !== null ) {
 496                                 return array( $target, $type );
 497                         }
 498                 }
 499
 500                 return array( null, null );
 501         }
 502
 503         /**
 504          * HTMLForm field validation-callback for Target field.
 505          * @since 1.18
 506          * @param $value String
 507          * @param $alldata Array
 508          * @param $form HTMLForm
 509          * @return Message
 510          */
 511         public static function validateTargetField( $value, $alldata, $form ) {
 512                 $status = self::validateTarget( $value, $form->getUser() );
 513                 if ( !$status->isOK() ) {
 514                         $errors = $status->getErrorsArray();
 515
 516                         return call_user_func_array( array( $form, 'msg' ), $errors[0] );
 517                 } else {
 518                         return true;
 519                 }
 520         }
 521
 522         /**
 523          * Validate a block target.
 524          *
 525          * @since 1.21
 526          * @param string $value Block target to check
 527          * @param User $user Performer of the block
 528          * @return Status
 529          */
 530         public static function validateTarget( $value, User $user ) {
 531                 global $wgBlockCIDRLimit;
 532
 533                 /** @var User $target */
 534                 list( $target, $type ) = self::getTargetAndType( $value );
 535                 $status = Status::newGood( $target );
 536
 537                 if ( $type == Block::TYPE_USER ) {
 538                         if ( $target->isAnon() ) {
 539                                 $status->fatal(
 540                                         'nosuchusershort',
 541                                         wfEscapeWikiText( $target->getName() )
 542                                 );
 543                         }
 544
 545                         $unblockStatus = self::checkUnblockSelf( $target, $user );
 546                         if ( $unblockStatus !== true ) {
 547                                 $status->fatal( 'badaccess', $unblockStatus );
 548                         }
 549                 } elseif ( $type == Block::TYPE_RANGE ) {
 550                         list( $ip, $range ) = explode( '/', $target, 2 );
 551
 552                         if (
 553                                 ( IP::isIPv4( $ip ) && $wgBlockCIDRLimit['IPv4'] == 32 ) ||
 554                                 ( IP::isIPv6( $ip ) && $wgBlockCIDRLimit['IPv6'] == 128 )
 555                         ) {
 556                                 // Range block effectively disabled
 557                                 $status->fatal( 'range_block_disabled' );
 558                         }
 559
 560                         if (
 561                                 ( IP::isIPv4( $ip ) && $range > 32 ) ||
 562                                 ( IP::isIPv6( $ip ) && $range > 128 )
 563                         ) {
 564                                 // Dodgy range
 565                                 $status->fatal( 'ip_range_invalid' );
 566                         }
 567
 568                         if ( IP::isIPv4( $ip ) && $range < $wgBlockCIDRLimit['IPv4'] ) {
 569                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 570                         }
 571
 572                         if ( IP::isIPv6( $ip ) && $range < $wgBlockCIDRLimit['IPv6'] ) {
 573                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 574                         }
 575                 } elseif ( $type == Block::TYPE_IP ) {
 576                         # All is well
 577                 } else {
 578                         $status->fatal( 'badipaddress' );
 579                 }
 580
 581                 return $status;
 582         }
 583
 584         /**
 585          * Submit callback for an HTMLForm object, will simply pass
 586          * @param $data array
 587          * @param $form HTMLForm
 588          * @return Bool|String
 589          */
 590         public static function processUIForm( array $data, HTMLForm $form ) {
 591                 return self::processForm( $data, $form->getContext() );
 592         }
 593
 594         /**
 595          * Given the form data, actually implement a block
 596          * @param $data Array
 597          * @param $context IContextSource
 598          * @return Bool|String
 599          */
 600         public static function processForm( array $data, IContextSource $context ) {
 601                 global $wgBlockAllowsUTEdit, $wgHideUserContribLimit;
 602
 603                 $performer = $context->getUser();
 604
 605                 // Handled by field validator callback
 606                 // self::validateTargetField( $data['Target'] );
 607
 608                 # This might have been a hidden field or a checkbox, so interesting data
 609                 # can come from it
 610                 $data['Confirm'] = !in_array( $data['Confirm'], array( '', '0', null, false ), true );
 611
 612                 /** @var User $target */
 613                 list( $target, $type ) = self::getTargetAndType( $data['Target'] );
 614                 if ( $type == Block::TYPE_USER ) {
 615                         $user = $target;
 616                         $target = $user->getName();
 617                         $userId = $user->getId();
 618
 619                         # Give admins a heads-up before they go and block themselves.  Much messier
 620                         # to do this for IPs, but it's pretty unlikely they'd ever get the 'block'
 621                         # permission anyway, although the code does allow for it.
 622                         # Note: Important to use $target instead of $data['Target']
 623                         # since both $data['PreviousTarget'] and $target are normalized
 624                         # but $data['target'] gets overriden by (non-normalized) request variable
 625                         # from previous request.
 626                         if ( $target === $performer->getName() &&
 627                                 ( $data['PreviousTarget'] !== $target || !$data['Confirm'] )
 628                         ) {
 629                                 return array( 'ipb-blockingself', 'ipb-confirmaction' );
 630                         }
 631                 } elseif ( $type == Block::TYPE_RANGE ) {
 632                         $userId = 0;
 633                 } elseif ( $type == Block::TYPE_IP ) {
 634                         $target = $target->getName();
 635                         $userId = 0;
 636                 } else {
 637                         # This should have been caught in the form field validation
 638                         return array( 'badipaddress' );
 639                 }
 640
 641                 if ( ( strlen( $data['Expiry'] ) == 0 ) || ( strlen( $data['Expiry'] ) > 50 )
 642                         || !self::parseExpiryInput( $data['Expiry'] )
 643                 ) {
 644                         return array( 'ipb_expiry_invalid' );
 645                 }
 646
 647                 if ( !isset( $data['DisableEmail'] ) ) {
 648                         $data['DisableEmail'] = false;
 649                 }
 650
 651                 # If the user has done the form 'properly', they won't even have been given the
 652                 # option to suppress-block unless they have the 'hideuser' permission
 653                 if ( !isset( $data['HideUser'] ) ) {
 654                         $data['HideUser'] = false;
 655                 }
 656
 657                 if ( $data['HideUser'] ) {
 658                         if ( !$performer->isAllowed( 'hideuser' ) ) {
 659                                 # this codepath is unreachable except by a malicious user spoofing forms,
 660                                 # or by race conditions (user has oversight and sysop, loads block form,
 661                                 # and is de-oversighted before submission); so need to fail completely
 662                                 # rather than just silently disable hiding
 663                                 return array( 'badaccess-group0' );
 664                         }
 665
 666                         # Recheck params here...
 667                         if ( $type != Block::TYPE_USER ) {
 668                                 $data['HideUser'] = false; # IP users should not be hidden
 669                         } elseif ( !in_array( $data['Expiry'], array( 'infinite', 'infinity', 'indefinite' ) ) ) {
 670                                 # Bad expiry.
 671                                 return array( 'ipb_expiry_temp' );
 672                         } elseif ( $wgHideUserContribLimit !== false
 673                                 && $user->getEditCount() > $wgHideUserContribLimit
 674                         ) {
 675                                 # Typically, the user should have a handful of edits.
 676                                 # Disallow hiding users with many edits for performance.
 677                                 return array( array( 'ipb_hide_invalid',
 678                                         Message::numParam( $wgHideUserContribLimit ) ) );
 679                         } elseif ( !$data['Confirm'] ) {
 680                                 return array( 'ipb-confirmhideuser', 'ipb-confirmaction' );
 681                         }
 682                 }
 683
 684                 # Create block object.
 685                 $block = new Block();
 686                 $block->setTarget( $target );
 687                 $block->setBlocker( $performer );
 688                 $block->mReason = $data['Reason'][0];
 689                 $block->mExpiry = self::parseExpiryInput( $data['Expiry'] );
 690                 $block->prevents( 'createaccount', $data['CreateAccount'] );
 691                 $block->prevents( 'editownusertalk', ( !$wgBlockAllowsUTEdit || $data['DisableUTEdit'] ) );
 692                 $block->prevents( 'sendemail', $data['DisableEmail'] );
 693                 $block->isHardblock( $data['HardBlock'] );
 694                 $block->isAutoblocking( $data['AutoBlock'] );
 695                 $block->mHideName = $data['HideUser'];
 696
 697                 $reason = array( 'hookaborted' );
 698                 if ( !wfRunHooks( 'BlockIp', array( &$block, &$performer, &$reason ) ) ) {
 699                         return $reason;
 700                 }
 701
 702                 # Try to insert block. Is there a conflicting block?
 703                 $status = $block->insert();
 704                 if ( !$status ) {
 705                         # Indicates whether the user is confirming the block and is aware of
 706                         # the conflict (did not change the block target in the meantime)
 707                         $blockNotConfirmed = !$data['Confirm'] || ( array_key_exists( 'PreviousTarget', $data )
 708                                 && $data['PreviousTarget'] !== $target );
 709
 710                         # Special case for API - bug 32434
 711                         $reblockNotAllowed = ( array_key_exists( 'Reblock', $data ) && !$data['Reblock'] );
 712
 713                         # Show form unless the user is already aware of this...
 714                         if ( $blockNotConfirmed || $reblockNotAllowed ) {
 715                                 return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 716                                 # Otherwise, try to update the block...
 717                         } else {
 718                                 # This returns direct blocks before autoblocks/rangeblocks, since we should
 719                                 # be sure the user is blocked by now it should work for our purposes
 720                                 $currentBlock = Block::newFromTarget( $target );
 721
 722                                 if ( $block->equals( $currentBlock ) ) {
 723                                         return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 724                                 }
 725
 726                                 # If the name was hidden and the blocking user cannot hide
 727                                 # names, then don't allow any block changes...
 728                                 if ( $currentBlock->mHideName && !$performer->isAllowed( 'hideuser' ) ) {
 729                                         return array( 'cant-see-hidden-user' );
 730                                 }
 731
 732                                 $currentBlock->isHardblock( $block->isHardblock() );
 733                                 $currentBlock->prevents( 'createaccount', $block->prevents( 'createaccount' ) );
 734                                 $currentBlock->mExpiry = $block->mExpiry;
 735                                 $currentBlock->isAutoblocking( $block->isAutoblocking() );
 736                                 $currentBlock->mHideName = $block->mHideName;
 737                                 $currentBlock->prevents( 'sendemail', $block->prevents( 'sendemail' ) );
 738                                 $currentBlock->prevents( 'editownusertalk', $block->prevents( 'editownusertalk' ) );
 739                                 $currentBlock->mReason = $block->mReason;
 740
 741                                 $status = $currentBlock->update();
 742
 743                                 $logaction = 'reblock';
 744
 745                                 # Unset _deleted fields if requested
 746                                 if ( $currentBlock->mHideName && !$data['HideUser'] ) {
 747                                         RevisionDeleteUser::unsuppressUserName( $target, $userId );
 748                                 }
 749
 750                                 # If hiding/unhiding a name, this should go in the private logs
 751                                 if ( (bool)$currentBlock->mHideName ) {
 752                                         $data['HideUser'] = true;
 753                                 }
 754                         }
 755                 } else {
 756                         $logaction = 'block';
 757                 }
 758
 759                 wfRunHooks( 'BlockIpComplete', array( $block, $performer ) );
 760
 761                 # Set *_deleted fields if requested
 762                 if ( $data['HideUser'] ) {
 763                         RevisionDeleteUser::suppressUserName( $target, $userId );
 764                 }
 765
 766                 # Can't watch a rangeblock
 767                 if ( $type != Block::TYPE_RANGE && $data['Watch'] ) {
 768                         WatchAction::doWatch( Title::makeTitle( NS_USER, $target ), $performer, WatchedItem::IGNORE_USER_RIGHTS );
 769                 }
 770
 771                 # Block constructor sanitizes certain block options on insert
 772                 $data['BlockEmail'] = $block->prevents( 'sendemail' );
 773                 $data['AutoBlock'] = $block->isAutoblocking();
 774
 775                 # Prepare log parameters
 776                 $logParams = array();
 777                 $logParams[] = $data['Expiry'];
 778                 $logParams[] = self::blockLogFlags( $data, $type );
 779
 780                 # Make log entry, if the name is hidden, put it in the oversight log
 781                 $log_type = $data['HideUser'] ? 'suppress' : 'block';
 782                 $log = new LogPage( $log_type );
 783                 $log_id = $log->addEntry(
 784                         $logaction,
 785                         Title::makeTitle( NS_USER, $target ),
 786                         $data['Reason'][0],
 787                         $logParams,
 788                         $performer
 789                 );
 790                 # Relate log ID to block IDs (bug 25763)
 791                 $blockIds = array_merge( array( $status['id'] ), $status['autoIds'] );
 792                 $log->addRelations( 'ipb_id', $blockIds, $log_id );
 793
 794                 # Report to the user
 795                 return true;
 796         }
 797
 798         /**
 799          * Get an array of suggested block durations from MediaWiki:Ipboptions
 800          * @todo FIXME: This uses a rather odd syntax for the options, should it be converted
 801          *     to the standard "**<duration>|<displayname>" format?
 802          * @param $lang Language|null the language to get the durations in, or null to use
 803          *     the wiki's content language
 804          * @return Array
 805          */
 806         public static function getSuggestedDurations( $lang = null ) {
 807                 $a = array();
 808                 $msg = $lang === null
 809                         ? wfMessage( 'ipboptions' )->inContentLanguage()->text()
 810                         : wfMessage( 'ipboptions' )->inLanguage( $lang )->text();
 811
 812                 if ( $msg == '-' ) {
 813                         return array();
 814                 }
 815
 816                 foreach ( explode( ',', $msg ) as $option ) {
 817                         if ( strpos( $option, ':' ) === false ) {
 818                                 $option = "$option:$option";
 819                         }
 820
 821                         list( $show, $value ) = explode( ':', $option );
 822                         $a[htmlspecialchars( $show )] = htmlspecialchars( $value );
 823                 }
 824
 825                 return $a;
 826         }
 827
 828         /**
 829          * Convert a submitted expiry time, which may be relative ("2 weeks", etc) or absolute
 830          * ("24 May 2034", etc), into an absolute timestamp we can put into the database.
 831          * @param string $expiry whatever was typed into the form
 832          * @return String: timestamp or "infinity" string for the DB implementation
 833          */
 834         public static function parseExpiryInput( $expiry ) {
 835                 static $infinity;
 836                 if ( $infinity == null ) {
 837                         $infinity = wfGetDB( DB_SLAVE )->getInfinity();
 838                 }
 839
 840                 if ( $expiry == 'infinite' || $expiry == 'indefinite' ) {
 841                         $expiry = $infinity;
 842                 } else {
 843                         $expiry = strtotime( $expiry );
 844
 845                         if ( $expiry < 0 || $expiry === false ) {
 846                                 return false;
 847                         }
 848
 849                         $expiry = wfTimestamp( TS_MW, $expiry );
 850                 }
 851
 852                 return $expiry;
 853         }
 854
 855         /**
 856          * Can we do an email block?
 857          * @param $user User: the sysop wanting to make a block
 858          * @return Boolean
 859          */
 860         public static function canBlockEmail( $user ) {
 861                 global $wgEnableUserEmail, $wgSysopEmailBans;
 862
 863                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 864         }
 865
 866         /**
 867          * bug 15810: blocked admins should not be able to block/unblock
 868          * others, and probably shouldn't be able to unblock themselves
 869          * either.
 870          * @param $user User|Int|String
 871          * @param $performer User user doing the request
 872          * @return Bool|String true or error message key
 873          */
 874         public static function checkUnblockSelf( $user, User $performer ) {
 875                 if ( is_int( $user ) ) {
 876                         $user = User::newFromId( $user );
 877                 } elseif ( is_string( $user ) ) {
 878                         $user = User::newFromName( $user );
 879                 }
 880
 881                 if ( $performer->isBlocked() ) {
 882                         if ( $user instanceof User && $user->getId() == $performer->getId() ) {
 883                                 # User is trying to unblock themselves
 884                                 if ( $performer->isAllowed( 'unblockself' ) ) {
 885                                         return true;
 886                                         # User blocked themselves and is now trying to reverse it
 887                                 } elseif ( $performer->blockedBy() === $performer->getName() ) {
 888                                         return true;
 889                                 } else {
 890                                         return 'ipbnounblockself';
 891                                 }
 892                         } else {
 893                                 # User is trying to block/unblock someone else
 894                                 return 'ipbblocked';
 895                         }
 896                 } else {
 897                         return true;
 898                 }
 899         }
 900
 901         /**
 902          * Return a comma-delimited list of "flags" to be passed to the log
 903          * reader for this block, to provide more information in the logs
 904          * @param array $data from HTMLForm data
 905          * @param $type Block::TYPE_ constant (USER, RANGE, or IP)
 906          * @return string
 907          */
 908         protected static function blockLogFlags( array $data, $type ) {
 909                 global $wgBlockAllowsUTEdit;
 910                 $flags = array();
 911
 912                 # when blocking a user the option 'anononly' is not available/has no effect
 913                 # -> do not write this into log
 914                 if ( !$data['HardBlock'] && $type != Block::TYPE_USER ) {
 915                         // For grepping: message block-log-flags-anononly
 916                         $flags[] = 'anononly';
 917                 }
 918
 919                 if ( $data['CreateAccount'] ) {
 920                         // For grepping: message block-log-flags-nocreate
 921                         $flags[] = 'nocreate';
 922                 }
 923
 924                 # Same as anononly, this is not displayed when blocking an IP address
 925                 if ( !$data['AutoBlock'] && $type == Block::TYPE_USER ) {
 926                         // For grepping: message block-log-flags-noautoblock
 927                         $flags[] = 'noautoblock';
 928                 }
 929
 930                 if ( $data['DisableEmail'] ) {
 931                         // For grepping: message block-log-flags-noemail
 932                         $flags[] = 'noemail';
 933                 }
 934
 935                 if ( $wgBlockAllowsUTEdit && $data['DisableUTEdit'] ) {
 936                         // For grepping: message block-log-flags-nousertalk
 937                         $flags[] = 'nousertalk';
 938                 }
 939
 940                 if ( $data['HideUser'] ) {
 941                         // For grepping: message block-log-flags-hiddenname
 942                         $flags[] = 'hiddenname';
 943                 }
 944
 945                 return implode( ',', $flags );
 946         }
 947
 948         /**
 949          * Process the form on POST submission.
 950          * @param $data Array
 951          * @return Bool|Array true for success, false for didn't-try, array of errors on failure
 952          */
 953         public function onSubmit( array $data ) {
 954                 // This isn't used since we need that HTMLForm that's passed in the
 955                 // second parameter. See alterForm for the real function
 956         }
 957
 958         /**
 959          * Do something exciting on successful processing of the form, most likely to show a
 960          * confirmation message
 961          */
 962         public function onSuccess() {
 963                 $out = $this->getOutput();
 964                 $out->setPageTitle( $this->msg( 'blockipsuccesssub' ) );
 965                 $out->addWikiMsg( 'blockipsuccesstext', wfEscapeWikiText( $this->target ) );
 966         }
 967
 968         protected function getGroupName() {
 969                 return 'users';
 970         }
 971 }
 972
 973 # BC @since 1.18
 974 class IPBlockForm extends SpecialBlock {
 975 }