includes/specials/SpecialBlock.php

   1 <?php
   2 /**
   3  * Implements Special:Block
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page that allows users with 'block' right to block users from
  26  * editing pages and other actions
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialBlock extends FormSpecialPage {
  31         /** @var User User to be blocked, as passed either by parameter (url?wpTarget=Foo)
  32          * or as subpage (Special:Block/Foo) */
  33         protected $target;
  34
  35         /** @var int Block::TYPE_ constant */
  36         protected $type;
  37
  38         /** @var User|string The previous block target */
  39         protected $previousTarget;
  40
  41         /** @var bool Whether the previous submission of the form asked for HideUser */
  42         protected $requestedHideUser;
  43
  44         /** @var bool */
  45         protected $alreadyBlocked;
  46
  47         /** @var array */
  48         protected $preErrors = array();
  49
  50         public function __construct() {
  51                 parent::__construct( 'Block', 'block' );
  52         }
  53
  54         /**
  55          * Checks that the user can unblock themselves if they are trying to do so
  56          *
  57          * @param User $user
  58          * @throws ErrorPageError
  59          */
  60         protected function checkExecutePermissions( User $user ) {
  61                 parent::checkExecutePermissions( $user );
  62
  63                 # bug 15810: blocked admins should have limited access here
  64                 $status = self::checkUnblockSelf( $this->target, $user );
  65                 if ( $status !== true ) {
  66                         throw new ErrorPageError( 'badaccess', $status );
  67                 }
  68         }
  69
  70         /**
  71          * Handle some magic here
  72          *
  73          * @param string $par
  74          */
  75         protected function setParameter( $par ) {
  76                 # Extract variables from the request.  Try not to get into a situation where we
  77                 # need to extract *every* variable from the form just for processing here, but
  78                 # there are legitimate uses for some variables
  79                 $request = $this->getRequest();
  80                 list( $this->target, $this->type ) = self::getTargetAndType( $par, $request );
  81                 if ( $this->target instanceof User ) {
  82                         # Set the 'relevant user' in the skin, so it displays links like Contributions,
  83                         # User logs, UserRights, etc.
  84                         $this->getSkin()->setRelevantUser( $this->target );
  85                 }
  86
  87                 list( $this->previousTarget, /*...*/ ) =
  88                         Block::parseTarget( $request->getVal( 'wpPreviousTarget' ) );
  89                 $this->requestedHideUser = $request->getBool( 'wpHideUser' );
  90         }
  91
  92         /**
  93          * Customizes the HTMLForm a bit
  94          *
  95          * @param HTMLForm $form
  96          */
  97         protected function alterForm( HTMLForm $form ) {
  98                 $form->setWrapperLegendMsg( 'blockip-legend' );
  99                 $form->setHeaderText( '' );
 100                 $form->setSubmitCallback( array( __CLASS__, 'processUIForm' ) );
 101                 $form->setSubmitDestructive();
 102
 103                 $msg = $this->alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit';
 104                 $form->setSubmitTextMsg( $msg );
 105
 106                 # Don't need to do anything if the form has been posted
 107                 if ( !$this->getRequest()->wasPosted() && $this->preErrors ) {
 108                         $s = HTMLForm::formatErrors( $this->preErrors );
 109                         if ( $s ) {
 110                                 $form->addHeaderText( Html::rawElement(
 111                                         'div',
 112                                         array( 'class' => 'error' ),
 113                                         $s
 114                                 ) );
 115                         }
 116                 }
 117         }
 118
 119         /**
 120          * Get the HTMLForm descriptor array for the block form
 121          * @return array
 122          */
 123         protected function getFormFields() {
 124                 global $wgBlockAllowsUTEdit;
 125
 126                 $user = $this->getUser();
 127
 128                 $suggestedDurations = self::getSuggestedDurations();
 129
 130                 $a = array(
 131                         'Target' => array(
 132                                 'type' => 'text',
 133                                 'label-message' => 'ipaddressorusername',
 134                                 'id' => 'mw-bi-target',
 135                                 'size' => '45',
 136                                 'autofocus' => true,
 137                                 'required' => true,
 138                                 'validation-callback' => array( __CLASS__, 'validateTargetField' ),
 139                                 'cssclass' => 'mw-autocomplete-user', // used by mediawiki.userSuggest
 140                         ),
 141                         'Expiry' => array(
 142                                 'type' => !count( $suggestedDurations ) ? 'text' : 'selectorother',
 143                                 'label-message' => 'ipbexpiry',
 144                                 'required' => true,
 145                                 'options' => $suggestedDurations,
 146                                 'other' => $this->msg( 'ipbother' )->text(),
 147                                 'default' => $this->msg( 'ipb-default-expiry' )->inContentLanguage()->text(),
 148                         ),
 149                         'Reason' => array(
 150                                 'type' => 'selectandother',
 151                                 'maxlength' => 255,
 152                                 'label-message' => 'ipbreason',
 153                                 'options-message' => 'ipbreason-dropdown',
 154                         ),
 155                         'CreateAccount' => array(
 156                                 'type' => 'check',
 157                                 'label-message' => 'ipbcreateaccount',
 158                                 'default' => true,
 159                         ),
 160                 );
 161
 162                 if ( self::canBlockEmail( $user ) ) {
 163                         $a['DisableEmail'] = array(
 164                                 'type' => 'check',
 165                                 'label-message' => 'ipbemailban',
 166                         );
 167                 }
 168
 169                 if ( $wgBlockAllowsUTEdit ) {
 170                         $a['DisableUTEdit'] = array(
 171                                 'type' => 'check',
 172                                 'label-message' => 'ipb-disableusertalk',
 173                                 'default' => false,
 174                         );
 175                 }
 176
 177                 $a['AutoBlock'] = array(
 178                         'type' => 'check',
 179                         'label-message' => 'ipbenableautoblock',
 180                         'default' => true,
 181                 );
 182
 183                 # Allow some users to hide name from block log, blocklist and listusers
 184                 if ( $user->isAllowed( 'hideuser' ) ) {
 185                         $a['HideUser'] = array(
 186                                 'type' => 'check',
 187                                 'label-message' => 'ipbhidename',
 188                                 'cssclass' => 'mw-block-hideuser',
 189                         );
 190                 }
 191
 192                 # Watchlist their user page? (Only if user is logged in)
 193                 if ( $user->isLoggedIn() ) {
 194                         $a['Watch'] = array(
 195                                 'type' => 'check',
 196                                 'label-message' => 'ipbwatchuser',
 197                         );
 198                 }
 199
 200                 $a['HardBlock'] = array(
 201                         'type' => 'check',
 202                         'label-message' => 'ipb-hardblock',
 203                         'default' => false,
 204                 );
 205
 206                 # This is basically a copy of the Target field, but the user can't change it, so we
 207                 # can see if the warnings we maybe showed to the user before still apply
 208                 $a['PreviousTarget'] = array(
 209                         'type' => 'hidden',
 210                         'default' => false,
 211                 );
 212
 213                 # We'll turn this into a checkbox if we need to
 214                 $a['Confirm'] = array(
 215                         'type' => 'hidden',
 216                         'default' => '',
 217                         'label-message' => 'ipb-confirm',
 218                 );
 219
 220                 $this->maybeAlterFormDefaults( $a );
 221
 222                 // Allow extensions to add more fields
 223                 Hooks::run( 'SpecialBlockModifyFormFields', array( $this, &$a ) );
 224
 225                 return $a;
 226         }
 227
 228         /**
 229          * If the user has already been blocked with similar settings, load that block
 230          * and change the defaults for the form fields to match the existing settings.
 231          * @param array $fields HTMLForm descriptor array
 232          * @return bool Whether fields were altered (that is, whether the target is
 233          *     already blocked)
 234          */
 235         protected function maybeAlterFormDefaults( &$fields ) {
 236                 # This will be overwritten by request data
 237                 $fields['Target']['default'] = (string)$this->target;
 238
 239                 # This won't be
 240                 $fields['PreviousTarget']['default'] = (string)$this->target;
 241
 242                 $block = Block::newFromTarget( $this->target );
 243
 244                 if ( $block instanceof Block && !$block->mAuto # The block exists and isn't an autoblock
 245                         && ( $this->type != Block::TYPE_RANGE # The block isn't a rangeblock
 246                                 || $block->getTarget() == $this->target ) # or if it is, the range is what we're about to block
 247                 ) {
 248                         $fields['HardBlock']['default'] = $block->isHardblock();
 249                         $fields['CreateAccount']['default'] = $block->prevents( 'createaccount' );
 250                         $fields['AutoBlock']['default'] = $block->isAutoblocking();
 251
 252                         if ( isset( $fields['DisableEmail'] ) ) {
 253                                 $fields['DisableEmail']['default'] = $block->prevents( 'sendemail' );
 254                         }
 255
 256                         if ( isset( $fields['HideUser'] ) ) {
 257                                 $fields['HideUser']['default'] = $block->mHideName;
 258                         }
 259
 260                         if ( isset( $fields['DisableUTEdit'] ) ) {
 261                                 $fields['DisableUTEdit']['default'] = $block->prevents( 'editownusertalk' );
 262                         }
 263
 264                         // If the username was hidden (ipb_deleted == 1), don't show the reason
 265                         // unless this user also has rights to hideuser: Bug 35839
 266                         if ( !$block->mHideName || $this->getUser()->isAllowed( 'hideuser' ) ) {
 267                                 $fields['Reason']['default'] = $block->mReason;
 268                         } else {
 269                                 $fields['Reason']['default'] = '';
 270                         }
 271
 272                         if ( $this->getRequest()->wasPosted() ) {
 273                                 # Ok, so we got a POST submission asking us to reblock a user.  So show the
 274                                 # confirm checkbox; the user will only see it if they haven't previously
 275                                 $fields['Confirm']['type'] = 'check';
 276                         } else {
 277                                 # We got a target, but it wasn't a POST request, so the user must have gone
 278                                 # to a link like [[Special:Block/User]].  We don't need to show the checkbox
 279                                 # as long as they go ahead and block *that* user
 280                                 $fields['Confirm']['default'] = 1;
 281                         }
 282
 283                         if ( $block->mExpiry == 'infinity' ) {
 284                                 $fields['Expiry']['default'] = 'infinite';
 285                         } else {
 286                                 $fields['Expiry']['default'] = wfTimestamp( TS_RFC2822, $block->mExpiry );
 287                         }
 288
 289                         $this->alreadyBlocked = true;
 290                         $this->preErrors[] = array( 'ipb-needreblock', wfEscapeWikiText( (string)$block->getTarget() ) );
 291                 }
 292
 293                 # We always need confirmation to do HideUser
 294                 if ( $this->requestedHideUser ) {
 295                         $fields['Confirm']['type'] = 'check';
 296                         unset( $fields['Confirm']['default'] );
 297                         $this->preErrors[] = array( 'ipb-confirmhideuser', 'ipb-confirmaction' );
 298                 }
 299
 300                 # Or if the user is trying to block themselves
 301                 if ( (string)$this->target === $this->getUser()->getName() ) {
 302                         $fields['Confirm']['type'] = 'check';
 303                         unset( $fields['Confirm']['default'] );
 304                         $this->preErrors[] = array( 'ipb-blockingself', 'ipb-confirmaction' );
 305                 }
 306         }
 307
 308         /**
 309          * Add header elements like block log entries, etc.
 310          * @return string
 311          */
 312         protected function preText() {
 313                 $this->getOutput()->addModules( array( 'mediawiki.special.block', 'mediawiki.userSuggest' ) );
 314
 315                 $text = $this->msg( 'blockiptext' )->parse();
 316
 317                 $otherBlockMessages = array();
 318                 if ( $this->target !== null ) {
 319                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 320                         Hooks::run( 'OtherBlockLogLink', array( &$otherBlockMessages, $this->target ) );
 321
 322                         if ( count( $otherBlockMessages ) ) {
 323                                 $s = Html::rawElement(
 324                                         'h2',
 325                                         array(),
 326                                         $this->msg( 'ipb-otherblocks-header', count( $otherBlockMessages ) )->parse()
 327                                 ) . "\n";
 328
 329                                 $list = '';
 330
 331                                 foreach ( $otherBlockMessages as $link ) {
 332                                         $list .= Html::rawElement( 'li', array(), $link ) . "\n";
 333                                 }
 334
 335                                 $s .= Html::rawElement(
 336                                         'ul',
 337                                         array( 'class' => 'mw-blockip-alreadyblocked' ),
 338                                         $list
 339                                 ) . "\n";
 340
 341                                 $text .= $s;
 342                         }
 343                 }
 344
 345                 return $text;
 346         }
 347
 348         /**
 349          * Add footer elements to the form
 350          * @return string
 351          */
 352         protected function postText() {
 353                 $links = array();
 354
 355                 # Link to the user's contributions, if applicable
 356                 if ( $this->target instanceof User ) {
 357                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->target->getName() );
 358                         $links[] = Linker::link(
 359                                 $contribsPage,
 360                                 $this->msg( 'ipb-blocklist-contribs', $this->target->getName() )->escaped()
 361                         );
 362                 }
 363
 364                 # Link to unblock the specified user, or to a blank unblock form
 365                 if ( $this->target instanceof User ) {
 366                         $message = $this->msg(
 367                                 'ipb-unblock-addr',
 368                                 wfEscapeWikiText( $this->target->getName() )
 369                         )->parse();
 370                         $list = SpecialPage::getTitleFor( 'Unblock', $this->target->getName() );
 371                 } else {
 372                         $message = $this->msg( 'ipb-unblock' )->parse();
 373                         $list = SpecialPage::getTitleFor( 'Unblock' );
 374                 }
 375                 $links[] = Linker::linkKnown( $list, $message, array() );
 376
 377                 # Link to the block list
 378                 $links[] = Linker::linkKnown(
 379                         SpecialPage::getTitleFor( 'BlockList' ),
 380                         $this->msg( 'ipb-blocklist' )->escaped()
 381                 );
 382
 383                 $user = $this->getUser();
 384
 385                 # Link to edit the block dropdown reasons, if applicable
 386                 if ( $user->isAllowed( 'editinterface' ) ) {
 387                         $links[] = Linker::link(
 388                                 Title::makeTitle( NS_MEDIAWIKI, 'Ipbreason-dropdown' ),
 389                                 $this->msg( 'ipb-edit-dropdown' )->escaped(),
 390                                 array(),
 391                                 array( 'action' => 'edit' )
 392                         );
 393                 }
 394
 395                 $text = Html::rawElement(
 396                         'p',
 397                         array( 'class' => 'mw-ipb-conveniencelinks' ),
 398                         $this->getLanguage()->pipeList( $links )
 399                 );
 400
 401                 $userTitle = self::getTargetUserTitle( $this->target );
 402                 if ( $userTitle ) {
 403                         # Get relevant extracts from the block and suppression logs, if possible
 404                         $out = '';
 405
 406                         LogEventsList::showLogExtract(
 407                                 $out,
 408                                 'block',
 409                                 $userTitle,
 410                                 '',
 411                                 array(
 412                                         'lim' => 10,
 413                                         'msgKey' => array( 'blocklog-showlog', $userTitle->getText() ),
 414                                         'showIfEmpty' => false
 415                                 )
 416                         );
 417                         $text .= $out;
 418
 419                         # Add suppression block entries if allowed
 420                         if ( $user->isAllowed( 'suppressionlog' ) ) {
 421                                 LogEventsList::showLogExtract(
 422                                         $out,
 423                                         'suppress',
 424                                         $userTitle,
 425                                         '',
 426                                         array(
 427                                                 'lim' => 10,
 428                                                 'conds' => array( 'log_action' => array( 'block', 'reblock', 'unblock' ) ),
 429                                                 'msgKey' => array( 'blocklog-showsuppresslog', $userTitle->getText() ),
 430                                                 'showIfEmpty' => false
 431                                         )
 432                                 );
 433
 434                                 $text .= $out;
 435                         }
 436                 }
 437
 438                 return $text;
 439         }
 440
 441         /**
 442          * Get a user page target for things like logs.
 443          * This handles account and IP range targets.
 444          * @param User|string $target
 445          * @return Title|null
 446          */
 447         protected static function getTargetUserTitle( $target ) {
 448                 if ( $target instanceof User ) {
 449                         return $target->getUserPage();
 450                 } elseif ( IP::isIPAddress( $target ) ) {
 451                         return Title::makeTitleSafe( NS_USER, $target );
 452                 }
 453
 454                 return null;
 455         }
 456
 457         /**
 458          * Determine the target of the block, and the type of target
 459          * @todo Should be in Block.php?
 460          * @param string $par Subpage parameter passed to setup, or data value from
 461          *     the HTMLForm
 462          * @param WebRequest $request Optionally try and get data from a request too
 463          * @return array( User|string|null, Block::TYPE_ constant|null )
 464          */
 465         public static function getTargetAndType( $par, WebRequest $request = null ) {
 466                 $i = 0;
 467                 $target = null;
 468
 469                 while ( true ) {
 470                         switch ( $i++ ) {
 471                                 case 0:
 472                                         # The HTMLForm will check wpTarget first and only if it doesn't get
 473                                         # a value use the default, which will be generated from the options
 474                                         # below; so this has to have a higher precedence here than $par, or
 475                                         # we could end up with different values in $this->target and the HTMLForm!
 476                                         if ( $request instanceof WebRequest ) {
 477                                                 $target = $request->getText( 'wpTarget', null );
 478                                         }
 479                                         break;
 480                                 case 1:
 481                                         $target = $par;
 482                                         break;
 483                                 case 2:
 484                                         if ( $request instanceof WebRequest ) {
 485                                                 $target = $request->getText( 'ip', null );
 486                                         }
 487                                         break;
 488                                 case 3:
 489                                         # B/C @since 1.18
 490                                         if ( $request instanceof WebRequest ) {
 491                                                 $target = $request->getText( 'wpBlockAddress', null );
 492                                         }
 493                                         break;
 494                                 case 4:
 495                                         break 2;
 496                         }
 497
 498                         list( $target, $type ) = Block::parseTarget( $target );
 499
 500                         if ( $type !== null ) {
 501                                 return array( $target, $type );
 502                         }
 503                 }
 504
 505                 return array( null, null );
 506         }
 507
 508         /**
 509          * HTMLForm field validation-callback for Target field.
 510          * @since 1.18
 511          * @param string $value
 512          * @param array $alldata
 513          * @param HTMLForm $form
 514          * @return Message
 515          */
 516         public static function validateTargetField( $value, $alldata, $form ) {
 517                 $status = self::validateTarget( $value, $form->getUser() );
 518                 if ( !$status->isOK() ) {
 519                         $errors = $status->getErrorsArray();
 520
 521                         return call_user_func_array( array( $form, 'msg' ), $errors[0] );
 522                 } else {
 523                         return true;
 524                 }
 525         }
 526
 527         /**
 528          * Validate a block target.
 529          *
 530          * @since 1.21
 531          * @param string $value Block target to check
 532          * @param User $user Performer of the block
 533          * @return Status
 534          */
 535         public static function validateTarget( $value, User $user ) {
 536                 global $wgBlockCIDRLimit;
 537
 538                 /** @var User $target */
 539                 list( $target, $type ) = self::getTargetAndType( $value );
 540                 $status = Status::newGood( $target );
 541
 542                 if ( $type == Block::TYPE_USER ) {
 543                         if ( $target->isAnon() ) {
 544                                 $status->fatal(
 545                                         'nosuchusershort',
 546                                         wfEscapeWikiText( $target->getName() )
 547                                 );
 548                         }
 549
 550                         $unblockStatus = self::checkUnblockSelf( $target, $user );
 551                         if ( $unblockStatus !== true ) {
 552                                 $status->fatal( 'badaccess', $unblockStatus );
 553                         }
 554                 } elseif ( $type == Block::TYPE_RANGE ) {
 555                         list( $ip, $range ) = explode( '/', $target, 2 );
 556
 557                         if (
 558                                 ( IP::isIPv4( $ip ) && $wgBlockCIDRLimit['IPv4'] == 32 ) ||
 559                                 ( IP::isIPv6( $ip ) && $wgBlockCIDRLimit['IPv6'] == 128 )
 560                         ) {
 561                                 // Range block effectively disabled
 562                                 $status->fatal( 'range_block_disabled' );
 563                         }
 564
 565                         if (
 566                                 ( IP::isIPv4( $ip ) && $range > 32 ) ||
 567                                 ( IP::isIPv6( $ip ) && $range > 128 )
 568                         ) {
 569                                 // Dodgy range
 570                                 $status->fatal( 'ip_range_invalid' );
 571                         }
 572
 573                         if ( IP::isIPv4( $ip ) && $range < $wgBlockCIDRLimit['IPv4'] ) {
 574                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 575                         }
 576
 577                         if ( IP::isIPv6( $ip ) && $range < $wgBlockCIDRLimit['IPv6'] ) {
 578                                 $status->fatal( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 579                         }
 580                 } elseif ( $type == Block::TYPE_IP ) {
 581                         # All is well
 582                 } else {
 583                         $status->fatal( 'badipaddress' );
 584                 }
 585
 586                 return $status;
 587         }
 588
 589         /**
 590          * Submit callback for an HTMLForm object, will simply pass
 591          * @param array $data
 592          * @param HTMLForm $form
 593          * @return bool|string
 594          */
 595         public static function processUIForm( array $data, HTMLForm $form ) {
 596                 return self::processForm( $data, $form->getContext() );
 597         }
 598
 599         /**
 600          * Given the form data, actually implement a block
 601          * @param array $data
 602          * @param IContextSource $context
 603          * @return bool|string
 604          */
 605         public static function processForm( array $data, IContextSource $context ) {
 606                 global $wgBlockAllowsUTEdit, $wgHideUserContribLimit, $wgContLang;
 607
 608                 $performer = $context->getUser();
 609
 610                 // Handled by field validator callback
 611                 // self::validateTargetField( $data['Target'] );
 612
 613                 # This might have been a hidden field or a checkbox, so interesting data
 614                 # can come from it
 615                 $data['Confirm'] = !in_array( $data['Confirm'], array( '', '0', null, false ), true );
 616
 617                 /** @var User $target */
 618                 list( $target, $type ) = self::getTargetAndType( $data['Target'] );
 619                 if ( $type == Block::TYPE_USER ) {
 620                         $user = $target;
 621                         $target = $user->getName();
 622                         $userId = $user->getId();
 623
 624                         # Give admins a heads-up before they go and block themselves.  Much messier
 625                         # to do this for IPs, but it's pretty unlikely they'd ever get the 'block'
 626                         # permission anyway, although the code does allow for it.
 627                         # Note: Important to use $target instead of $data['Target']
 628                         # since both $data['PreviousTarget'] and $target are normalized
 629                         # but $data['target'] gets overridden by (non-normalized) request variable
 630                         # from previous request.
 631                         if ( $target === $performer->getName() &&
 632                                 ( $data['PreviousTarget'] !== $target || !$data['Confirm'] )
 633                         ) {
 634                                 return array( 'ipb-blockingself', 'ipb-confirmaction' );
 635                         }
 636                 } elseif ( $type == Block::TYPE_RANGE ) {
 637                         $userId = 0;
 638                 } elseif ( $type == Block::TYPE_IP ) {
 639                         $target = $target->getName();
 640                         $userId = 0;
 641                 } else {
 642                         # This should have been caught in the form field validation
 643                         return array( 'badipaddress' );
 644                 }
 645
 646                 if ( ( strlen( $data['Expiry'] ) == 0 ) || ( strlen( $data['Expiry'] ) > 50 )
 647                         || !self::parseExpiryInput( $data['Expiry'] )
 648                 ) {
 649                         return array( 'ipb_expiry_invalid' );
 650                 }
 651
 652                 if ( !isset( $data['DisableEmail'] ) ) {
 653                         $data['DisableEmail'] = false;
 654                 }
 655
 656                 # If the user has done the form 'properly', they won't even have been given the
 657                 # option to suppress-block unless they have the 'hideuser' permission
 658                 if ( !isset( $data['HideUser'] ) ) {
 659                         $data['HideUser'] = false;
 660                 }
 661
 662                 if ( $data['HideUser'] ) {
 663                         if ( !$performer->isAllowed( 'hideuser' ) ) {
 664                                 # this codepath is unreachable except by a malicious user spoofing forms,
 665                                 # or by race conditions (user has oversight and sysop, loads block form,
 666                                 # and is de-oversighted before submission); so need to fail completely
 667                                 # rather than just silently disable hiding
 668                                 return array( 'badaccess-group0' );
 669                         }
 670
 671                         # Recheck params here...
 672                         if ( $type != Block::TYPE_USER ) {
 673                                 $data['HideUser'] = false; # IP users should not be hidden
 674                         } elseif ( !in_array( $data['Expiry'], array( 'infinite', 'infinity', 'indefinite' ) ) ) {
 675                                 # Bad expiry.
 676                                 return array( 'ipb_expiry_temp' );
 677                         } elseif ( $wgHideUserContribLimit !== false
 678                                 && $user->getEditCount() > $wgHideUserContribLimit
 679                         ) {
 680                                 # Typically, the user should have a handful of edits.
 681                                 # Disallow hiding users with many edits for performance.
 682                                 return array( array( 'ipb_hide_invalid',
 683                                         Message::numParam( $wgHideUserContribLimit ) ) );
 684                         } elseif ( !$data['Confirm'] ) {
 685                                 return array( 'ipb-confirmhideuser', 'ipb-confirmaction' );
 686                         }
 687                 }
 688
 689                 # Create block object.
 690                 $block = new Block();
 691                 $block->setTarget( $target );
 692                 $block->setBlocker( $performer );
 693                 # Truncate reason for whole multibyte characters
 694                 $block->mReason = $wgContLang->truncate( $data['Reason'][0], 255 );
 695                 $block->mExpiry = self::parseExpiryInput( $data['Expiry'] );
 696                 $block->prevents( 'createaccount', $data['CreateAccount'] );
 697                 $block->prevents( 'editownusertalk', ( !$wgBlockAllowsUTEdit || $data['DisableUTEdit'] ) );
 698                 $block->prevents( 'sendemail', $data['DisableEmail'] );
 699                 $block->isHardblock( $data['HardBlock'] );
 700                 $block->isAutoblocking( $data['AutoBlock'] );
 701                 $block->mHideName = $data['HideUser'];
 702
 703                 $reason = array( 'hookaborted' );
 704                 if ( !Hooks::run( 'BlockIp', array( &$block, &$performer, &$reason ) ) ) {
 705                         return $reason;
 706                 }
 707
 708                 # Try to insert block. Is there a conflicting block?
 709                 $status = $block->insert();
 710                 if ( !$status ) {
 711                         # Indicates whether the user is confirming the block and is aware of
 712                         # the conflict (did not change the block target in the meantime)
 713                         $blockNotConfirmed = !$data['Confirm'] || ( array_key_exists( 'PreviousTarget', $data )
 714                                 && $data['PreviousTarget'] !== $target );
 715
 716                         # Special case for API - bug 32434
 717                         $reblockNotAllowed = ( array_key_exists( 'Reblock', $data ) && !$data['Reblock'] );
 718
 719                         # Show form unless the user is already aware of this...
 720                         if ( $blockNotConfirmed || $reblockNotAllowed ) {
 721                                 return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 722                                 # Otherwise, try to update the block...
 723                         } else {
 724                                 # This returns direct blocks before autoblocks/rangeblocks, since we should
 725                                 # be sure the user is blocked by now it should work for our purposes
 726                                 $currentBlock = Block::newFromTarget( $target );
 727
 728                                 if ( $block->equals( $currentBlock ) ) {
 729                                         return array( array( 'ipb_already_blocked', $block->getTarget() ) );
 730                                 }
 731
 732                                 # If the name was hidden and the blocking user cannot hide
 733                                 # names, then don't allow any block changes...
 734                                 if ( $currentBlock->mHideName && !$performer->isAllowed( 'hideuser' ) ) {
 735                                         return array( 'cant-see-hidden-user' );
 736                                 }
 737
 738                                 $currentBlock->isHardblock( $block->isHardblock() );
 739                                 $currentBlock->prevents( 'createaccount', $block->prevents( 'createaccount' ) );
 740                                 $currentBlock->mExpiry = $block->mExpiry;
 741                                 $currentBlock->isAutoblocking( $block->isAutoblocking() );
 742                                 $currentBlock->mHideName = $block->mHideName;
 743                                 $currentBlock->prevents( 'sendemail', $block->prevents( 'sendemail' ) );
 744                                 $currentBlock->prevents( 'editownusertalk', $block->prevents( 'editownusertalk' ) );
 745                                 $currentBlock->mReason = $block->mReason;
 746
 747                                 $status = $currentBlock->update();
 748
 749                                 $logaction = 'reblock';
 750
 751                                 # Unset _deleted fields if requested
 752                                 if ( $currentBlock->mHideName && !$data['HideUser'] ) {
 753                                         RevisionDeleteUser::unsuppressUserName( $target, $userId );
 754                                 }
 755
 756                                 # If hiding/unhiding a name, this should go in the private logs
 757                                 if ( (bool)$currentBlock->mHideName ) {
 758                                         $data['HideUser'] = true;
 759                                 }
 760                         }
 761                 } else {
 762                         $logaction = 'block';
 763                 }
 764
 765                 Hooks::run( 'BlockIpComplete', array( $block, $performer ) );
 766
 767                 # Set *_deleted fields if requested
 768                 if ( $data['HideUser'] ) {
 769                         RevisionDeleteUser::suppressUserName( $target, $userId );
 770                 }
 771
 772                 # Can't watch a rangeblock
 773                 if ( $type != Block::TYPE_RANGE && $data['Watch'] ) {
 774                         WatchAction::doWatch(
 775                                 Title::makeTitle( NS_USER, $target ),
 776                                 $performer,
 777                                 WatchedItem::IGNORE_USER_RIGHTS
 778                         );
 779                 }
 780
 781                 # Block constructor sanitizes certain block options on insert
 782                 $data['BlockEmail'] = $block->prevents( 'sendemail' );
 783                 $data['AutoBlock'] = $block->isAutoblocking();
 784
 785                 # Prepare log parameters
 786                 $logParams = array();
 787                 $logParams[] = $data['Expiry'];
 788                 $logParams[] = self::blockLogFlags( $data, $type );
 789
 790                 # Make log entry, if the name is hidden, put it in the oversight log
 791                 $log_type = $data['HideUser'] ? 'suppress' : 'block';
 792                 $log = new LogPage( $log_type );
 793                 $log_id = $log->addEntry(
 794                         $logaction,
 795                         Title::makeTitle( NS_USER, $target ),
 796                         $data['Reason'][0],
 797                         $logParams,
 798                         $performer
 799                 );
 800                 # Relate log ID to block IDs (bug 25763)
 801                 $blockIds = array_merge( array( $status['id'] ), $status['autoIds'] );
 802                 $log->addRelations( 'ipb_id', $blockIds, $log_id );
 803
 804                 # Report to the user
 805                 return true;
 806         }
 807
 808         /**
 809          * Get an array of suggested block durations from MediaWiki:Ipboptions
 810          * @todo FIXME: This uses a rather odd syntax for the options, should it be converted
 811          *     to the standard "**<duration>|<displayname>" format?
 812          * @param Language|null $lang The language to get the durations in, or null to use
 813          *     the wiki's content language
 814          * @return array
 815          */
 816         public static function getSuggestedDurations( $lang = null ) {
 817                 $a = array();
 818                 $msg = $lang === null
 819                         ? wfMessage( 'ipboptions' )->inContentLanguage()->text()
 820                         : wfMessage( 'ipboptions' )->inLanguage( $lang )->text();
 821
 822                 if ( $msg == '-' ) {
 823                         return array();
 824                 }
 825
 826                 foreach ( explode( ',', $msg ) as $option ) {
 827                         if ( strpos( $option, ':' ) === false ) {
 828                                 $option = "$option:$option";
 829                         }
 830
 831                         list( $show, $value ) = explode( ':', $option );
 832                         $a[$show] = $value;
 833                 }
 834
 835                 return $a;
 836         }
 837
 838         /**
 839          * Convert a submitted expiry time, which may be relative ("2 weeks", etc) or absolute
 840          * ("24 May 2034", etc), into an absolute timestamp we can put into the database.
 841          * @param string $expiry Whatever was typed into the form
 842          * @return string Timestamp or "infinity" string for the DB implementation
 843          */
 844         public static function parseExpiryInput( $expiry ) {
 845                 static $infinity;
 846                 if ( $infinity == null ) {
 847                         $infinity = wfGetDB( DB_SLAVE )->getInfinity();
 848                 }
 849
 850                 if ( $expiry == 'infinite' || $expiry == 'indefinite' ) {
 851                         $expiry = $infinity;
 852                 } else {
 853                         $expiry = strtotime( $expiry );
 854
 855                         if ( $expiry < 0 || $expiry === false ) {
 856                                 return false;
 857                         }
 858
 859                         $expiry = wfTimestamp( TS_MW, $expiry );
 860                 }
 861
 862                 return $expiry;
 863         }
 864
 865         /**
 866          * Can we do an email block?
 867          * @param User $user The sysop wanting to make a block
 868          * @return bool
 869          */
 870         public static function canBlockEmail( $user ) {
 871                 global $wgEnableUserEmail, $wgSysopEmailBans;
 872
 873                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 874         }
 875
 876         /**
 877          * bug 15810: blocked admins should not be able to block/unblock
 878          * others, and probably shouldn't be able to unblock themselves
 879          * either.
 880          * @param User|int|string $user
 881          * @param User $performer User doing the request
 882          * @return bool|string True or error message key
 883          */
 884         public static function checkUnblockSelf( $user, User $performer ) {
 885                 if ( is_int( $user ) ) {
 886                         $user = User::newFromId( $user );
 887                 } elseif ( is_string( $user ) ) {
 888                         $user = User::newFromName( $user );
 889                 }
 890
 891                 if ( $performer->isBlocked() ) {
 892                         if ( $user instanceof User && $user->getId() == $performer->getId() ) {
 893                                 # User is trying to unblock themselves
 894                                 if ( $performer->isAllowed( 'unblockself' ) ) {
 895                                         return true;
 896                                         # User blocked themselves and is now trying to reverse it
 897                                 } elseif ( $performer->blockedBy() === $performer->getName() ) {
 898                                         return true;
 899                                 } else {
 900                                         return 'ipbnounblockself';
 901                                 }
 902                         } else {
 903                                 # User is trying to block/unblock someone else
 904                                 return 'ipbblocked';
 905                         }
 906                 } else {
 907                         return true;
 908                 }
 909         }
 910
 911         /**
 912          * Return a comma-delimited list of "flags" to be passed to the log
 913          * reader for this block, to provide more information in the logs
 914          * @param array $data From HTMLForm data
 915          * @param int $type Block::TYPE_ constant (USER, RANGE, or IP)
 916          * @return string
 917          */
 918         protected static function blockLogFlags( array $data, $type ) {
 919                 global $wgBlockAllowsUTEdit;
 920                 $flags = array();
 921
 922                 # when blocking a user the option 'anononly' is not available/has no effect
 923                 # -> do not write this into log
 924                 if ( !$data['HardBlock'] && $type != Block::TYPE_USER ) {
 925                         // For grepping: message block-log-flags-anononly
 926                         $flags[] = 'anononly';
 927                 }
 928
 929                 if ( $data['CreateAccount'] ) {
 930                         // For grepping: message block-log-flags-nocreate
 931                         $flags[] = 'nocreate';
 932                 }
 933
 934                 # Same as anononly, this is not displayed when blocking an IP address
 935                 if ( !$data['AutoBlock'] && $type == Block::TYPE_USER ) {
 936                         // For grepping: message block-log-flags-noautoblock
 937                         $flags[] = 'noautoblock';
 938                 }
 939
 940                 if ( $data['DisableEmail'] ) {
 941                         // For grepping: message block-log-flags-noemail
 942                         $flags[] = 'noemail';
 943                 }
 944
 945                 if ( $wgBlockAllowsUTEdit && $data['DisableUTEdit'] ) {
 946                         // For grepping: message block-log-flags-nousertalk
 947                         $flags[] = 'nousertalk';
 948                 }
 949
 950                 if ( $data['HideUser'] ) {
 951                         // For grepping: message block-log-flags-hiddenname
 952                         $flags[] = 'hiddenname';
 953                 }
 954
 955                 return implode( ',', $flags );
 956         }
 957
 958         /**
 959          * Process the form on POST submission.
 960          * @param array $data
 961          * @return bool|array True for success, false for didn't-try, array of errors on failure
 962          */
 963         public function onSubmit( array $data ) {
 964                 // This isn't used since we need that HTMLForm that's passed in the
 965                 // second parameter. See alterForm for the real function
 966         }
 967
 968         /**
 969          * Do something exciting on successful processing of the form, most likely to show a
 970          * confirmation message
 971          */
 972         public function onSuccess() {
 973                 $out = $this->getOutput();
 974                 $out->setPageTitle( $this->msg( 'blockipsuccesssub' ) );
 975                 $out->addWikiMsg( 'blockipsuccesstext', wfEscapeWikiText( $this->target ) );
 976         }
 977
 978         protected function getGroupName() {
 979                 return 'users';
 980         }
 981 }