SpecialBlockList.php

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<?php
class SpecialBlockList extends SpecialPage {
    protected $target;

    protected $options;

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

    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;

    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 ) );
        }

        $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;
    }

    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__ );
    }
}