Remove "related" searches

[mediawiki.git] / includes / specials / SpecialBlockList.php

<?php
/**
 * Implements Special:BlockList
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup SpecialPage
 */

/**
 * A special page that lists existing blocks
 *
 * @ingroup SpecialPage
 */
class SpecialBlockList extends SpecialPage {
        protected $target;

        protected $options;

        function __construct() {
                parent::__construct( 'BlockList' );
        }

        /**
         * Main execution point
         *
         * @param string $par Title fragment
         */
        public function execute( $par ) {
                $this->setHeaders();
                $this->outputHeader();
                $out = $this->getOutput();
                $lang = $this->getLanguage();
                $out->setPageTitle( $this->msg( 'ipblocklist' ) );
                $out->addModuleStyles( 'mediawiki.special' );

                $request = $this->getRequest();
                $par = $request->getVal( 'ip', $par );
                $this->target = trim( $request->getVal( 'wpTarget', $par ) );

                $this->options = $request->getArray( 'wpOptions', array() );

                $action = $request->getText( 'action' );

                if ( $action == 'unblock' || $action == 'submit' && $request->wasPosted() ) {
                        # B/C @since 1.18: Unblock interface is now at Special:Unblock
                        $title = SpecialPage::getTitleFor( 'Unblock', $this->target );
                        $out->redirect( $title->getFullURL() );

                        return;
                }

                # Just show the block list
                $fields = array(
                        'Target' => array(
                                'type' => 'text',
                                'label-message' => 'ipaddressorusername',
                                'tabindex' => '1',
                                'size' => '45',
                                'default' => $this->target,
                        ),
                        'Options' => array(
                                'type' => 'multiselect',
                                'options' => array(
                                        $this->msg( 'blocklist-userblocks' )->text() => 'userblocks',
                                        $this->msg( 'blocklist-tempblocks' )->text() => 'tempblocks',
                                        $this->msg( 'blocklist-addressblocks' )->text() => 'addressblocks',
                                        $this->msg( 'blocklist-rangeblocks' )->text() => 'rangeblocks',
                                ),
                                'flatlist' => true,
                        ),
                        'Limit' => array(
                                'type' => 'limitselect',
                                'label-message' => 'table_pager_limit_label',
                                'options' => array(
                                        $lang->formatNum( 20 ) => 20,
                                        $lang->formatNum( 50 ) => 50,
                                        $lang->formatNum( 100 ) => 100,
                                        $lang->formatNum( 250 ) => 250,
                                        $lang->formatNum( 500 ) => 500,
                                ),
                                'name' => 'limit',
                                'default' => 50,
                        ),
                );
                $context = new DerivativeContext( $this->getContext() );
                $context->setTitle( $this->getPageTitle() ); // Remove subpage
                $form = new HTMLForm( $fields, $context );
                $form->setMethod( 'get' );
                $form->setWrapperLegendMsg( 'ipblocklist-legend' );
                $form->setSubmitTextMsg( 'ipblocklist-submit' );
                $form->prepareForm();

                $form->displayForm( '' );
                $this->showList();
        }

        function showList() {
                # Purge expired entries on one in every 10 queries
                if ( !mt_rand( 0, 10 ) ) {
                        Block::purgeExpired();
                }

                $conds = array();
                # Is the user allowed to see hidden blocks?
                if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
                        $conds['ipb_deleted'] = 0;
                }

                if ( $this->target !== '' ) {
                        list( $target, $type ) = Block::parseTarget( $this->target );

                        switch ( $type ) {
                                case Block::TYPE_ID:
                                case Block::TYPE_AUTO:
                                        $conds['ipb_id'] = $target;
                                        break;

                                case Block::TYPE_IP:
                                case Block::TYPE_RANGE:
                                        list( $start, $end ) = IP::parseRange( $target );
                                        $dbr = wfGetDB( DB_SLAVE );
                                        $conds[] = $dbr->makeList(
                                                array(
                                                        'ipb_address' => $target,
                                                        Block::getRangeCond( $start, $end )
                                                ),
                                                LIST_OR
                                        );
                                        $conds['ipb_auto'] = 0;
                                        break;

                                case Block::TYPE_USER:
                                        $conds['ipb_address'] = $target->getName();
                                        $conds['ipb_auto'] = 0;
                                        break;
                        }
                }

                # Apply filters
                if ( in_array( 'userblocks', $this->options ) ) {
                        $conds['ipb_user'] = 0;
                }
                if ( in_array( 'tempblocks', $this->options ) ) {
                        $conds['ipb_expiry'] = 'infinity';
                }
                if ( in_array( 'addressblocks', $this->options ) ) {
                        $conds[] = "ipb_user != 0 OR ipb_range_end > ipb_range_start";
                }
                if ( in_array( 'rangeblocks', $this->options ) ) {
                        $conds[] = "ipb_range_end = ipb_range_start";
                }

                # Check for other blocks, i.e. global/tor blocks
                $otherBlockLink = array();
                wfRunHooks( 'OtherBlockLogLink', array( &$otherBlockLink, $this->target ) );

                $out = $this->getOutput();

                # Show additional header for the local block only when other blocks exists.
                # Not necessary in a standard installation without such extensions enabled
                if ( count( $otherBlockLink ) ) {
                        $out->addHTML(
                                Html::element( 'h2', array(), $this->msg( 'ipblocklist-localblock' )->text() ) . "\n"
                        );
                }

                $pager = new BlockListPager( $this, $conds );
                if ( $pager->getNumRows() ) {
                        $out->addParserOutputContent( $pager->getFullOutput() );
                } elseif ( $this->target ) {
                        $out->addWikiMsg( 'ipblocklist-no-results' );
                } else {
                        $out->addWikiMsg( 'ipblocklist-empty' );
                }

                if ( count( $otherBlockLink ) ) {
                        $out->addHTML(
                                Html::rawElement(
                                        'h2',
                                        array(),
                                        $this->msg( 'ipblocklist-otherblocks', count( $otherBlockLink ) )->parse()
                                ) . "\n"
                        );
                        $list = '';
                        foreach ( $otherBlockLink as $link ) {
                                $list .= Html::rawElement( 'li', array(), $link ) . "\n";
                        }
                        $out->addHTML( Html::rawElement(
                                'ul',
                                array( 'class' => 'mw-ipblocklist-otherblocks' ),
                                $list
                        ) . "\n" );
                }
        }

        protected function getGroupName() {
                return 'users';
        }
}

class BlockListPager extends TablePager {
        protected $conds;
        protected $page;

        /**
         * @param SpecialPage $page
         * @param array $conds
         */
        function __construct( $page, $conds ) {
                $this->page = $page;
                $this->conds = $conds;
                $this->mDefaultDirection = IndexPager::DIR_DESCENDING;
                parent::__construct( $page->getContext() );
        }

        function getFieldNames() {
                static $headers = null;

                if ( $headers === null ) {
                        $headers = array(
                                'ipb_timestamp' => 'blocklist-timestamp',
                                'ipb_target' => 'blocklist-target',
                                'ipb_expiry' => 'blocklist-expiry',
                                'ipb_by' => 'blocklist-by',
                                'ipb_params' => 'blocklist-params',
                                'ipb_reason' => 'blocklist-reason',
                        );
                        foreach ( $headers as $key => $val ) {
                                $headers[$key] = $this->msg( $val )->text();
                        }
                }

                return $headers;
        }

        function formatValue( $name, $value ) {
                static $msg = null;
                if ( $msg === null ) {
                        $msg = array(
                                'anononlyblock',
                                'createaccountblock',
                                'noautoblockblock',
                                'emailblock',
                                'blocklist-nousertalk',
                                'unblocklink',
                                'change-blocklink',
                                'infiniteblock',
                        );
                        $msg = array_combine( $msg, array_map( array( $this, 'msg' ), $msg ) );
                }

                /** @var $row object */
                $row = $this->mCurrentRow;

                $formatted = '';

                switch ( $name ) {
                        case 'ipb_timestamp':
                                $formatted = $this->getLanguage()->userTimeAndDate( $value, $this->getUser() );
                                break;

                        case 'ipb_target':
                                if ( $row->ipb_auto ) {
                                        $formatted = $this->msg( 'autoblockid', $row->ipb_id )->parse();
                                } else {
                                        list( $target, $type ) = Block::parseTarget( $row->ipb_address );
                                        switch ( $type ) {
                                                case Block::TYPE_USER:
                                                case Block::TYPE_IP:
                                                        $formatted = Linker::userLink( $target->getId(), $target );
                                                        $formatted .= Linker::userToolLinks(
                                                                $target->getId(),
                                                                $target,
                                                                false,
                                                                Linker::TOOL_LINKS_NOBLOCK
                                                        );
                                                        break;
                                                case Block::TYPE_RANGE:
                                                        $formatted = htmlspecialchars( $target );
                                        }
                                }
                                break;

                        case 'ipb_expiry':
                                $formatted = $this->getLanguage()->formatExpiry( $value, /* User preference timezone */true );
                                if ( $this->getUser()->isAllowed( 'block' ) ) {
                                        if ( $row->ipb_auto ) {
                                                $links[] = Linker::linkKnown(
                                                        SpecialPage::getTitleFor( 'Unblock' ),
                                                        $msg['unblocklink'],
                                                        array(),
                                                        array( 'wpTarget' => "#{$row->ipb_id}" )
                                                );
                                        } else {
                                                $links[] = Linker::linkKnown(
                                                        SpecialPage::getTitleFor( 'Unblock', $row->ipb_address ),
                                                        $msg['unblocklink']
                                                );
                                                $links[] = Linker::linkKnown(
                                                        SpecialPage::getTitleFor( 'Block', $row->ipb_address ),
                                                        $msg['change-blocklink']
                                                );
                                        }
                                        $formatted .= ' ' . Html::rawElement(
                                                'span',
                                                array( 'class' => 'mw-blocklist-actions' ),
                                                $this->msg( 'parentheses' )->rawParams(
                                                        $this->getLanguage()->pipeList( $links ) )->escaped()
                                        );
                                }
                                break;

                        case 'ipb_by':
                                if ( isset( $row->by_user_name ) ) {
                                        $formatted = Linker::userLink( $value, $row->by_user_name );
                                        $formatted .= Linker::userToolLinks( $value, $row->by_user_name );
                                } else {
                                        $formatted = htmlspecialchars( $row->ipb_by_text ); // foreign user?
                                }
                                break;

                        case 'ipb_reason':
                                $formatted = Linker::formatComment( $value );
                                break;

                        case 'ipb_params':
                                $properties = array();
                                if ( $row->ipb_anon_only ) {
                                        $properties[] = $msg['anononlyblock'];
                                }
                                if ( $row->ipb_create_account ) {
                                        $properties[] = $msg['createaccountblock'];
                                }
                                if ( $row->ipb_user && !$row->ipb_enable_autoblock ) {
                                        $properties[] = $msg['noautoblockblock'];
                                }

                                if ( $row->ipb_block_email ) {
                                        $properties[] = $msg['emailblock'];
                                }

                                if ( !$row->ipb_allow_usertalk ) {
                                        $properties[] = $msg['blocklist-nousertalk'];
                                }

                                $formatted = $this->getLanguage()->commaList( $properties );
                                break;

                        default:
                                $formatted = "Unable to format $name";
                                break;
                }

                return $formatted;
        }

        function getQueryInfo() {
                $info = array(
                        'tables' => array( 'ipblocks', 'user' ),
                        'fields' => array(
                                'ipb_id',
                                'ipb_address',
                                'ipb_user',
                                'ipb_by',
                                'ipb_by_text',
                                'by_user_name' => 'user_name',
                                'ipb_reason',
                                'ipb_timestamp',
                                'ipb_auto',
                                'ipb_anon_only',
                                'ipb_create_account',
                                'ipb_enable_autoblock',
                                'ipb_expiry',
                                'ipb_range_start',
                                'ipb_range_end',
                                'ipb_deleted',
                                'ipb_block_email',
                                'ipb_allow_usertalk',
                        ),
                        'conds' => $this->conds,
                        'join_conds' => array( 'user' => array( 'LEFT JOIN', 'user_id = ipb_by' ) )
                );

                # Is the user allowed to see hidden blocks?
                if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
                        $info['conds']['ipb_deleted'] = 0;
                }

                return $info;
        }

        public function getTableClass() {
                return parent::getTableClass() . ' mw-blocklist';
        }

        function getIndexField() {
                return 'ipb_timestamp';
        }

        function getDefaultSort() {
                return 'ipb_timestamp';
        }

        function isFieldSortable( $name ) {
                return false;
        }

        /**
         * Do a LinkBatch query to minimise database load when generating all these links
         * @param ResultWrapper $result
         */
        function preprocessResults( $result ) {
                wfProfileIn( __METHOD__ );
                # Do a link batch query
                $lb = new LinkBatch;
                $lb->setCaller( __METHOD__ );

                $userids = array();

                foreach ( $result as $row ) {
                        $userids[] = $row->ipb_by;

                        # Usernames and titles are in fact related by a simple substitution of space -> underscore
                        # The last few lines of Title::secureAndSplit() tell the story.
                        $name = str_replace( ' ', '_', $row->ipb_address );
                        $lb->add( NS_USER, $name );
                        $lb->add( NS_USER_TALK, $name );
                }

                $ua = UserArray::newFromIDs( $userids );
                foreach ( $ua as $user ) {
                        $name = str_replace( ' ', '_', $user->getName() );
                        $lb->add( NS_USER, $name );
                        $lb->add( NS_USER_TALK, $name );
                }

                $lb->execute();
                wfProfileOut( __METHOD__ );
        }
}