ApiQueryBlocks.php

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<?php
use MediaWiki\Block\BlockActionInfo;
use MediaWiki\Block\BlockRestrictionStore;
use MediaWiki\Block\DatabaseBlockStore;
use MediaWiki\Block\HideUserUtils;
use MediaWiki\Block\Restriction\PageRestriction;
use MediaWiki\CommentStore\CommentStore;
use MediaWiki\MainConfigNames;
use MediaWiki\ParamValidator\TypeDef\UserDef;
use Wikimedia\IPUtils;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
use Wikimedia\Rdbms\IResultWrapper;
 
class ApiQueryBlocks extends ApiQueryBase {
 
    private DatabaseBlockStore $blockStore;
    private BlockActionInfo $blockActionInfo;
    private BlockRestrictionStore $blockRestrictionStore;
    private CommentStore $commentStore;
    private HideUserUtils $hideUserUtils;
 
    private $blockTargetReadStage;
 
    public function __construct(
        ApiQuery $query,
        $moduleName,
        DatabaseBlockStore $blockStore,
        BlockActionInfo $blockActionInfo,
        BlockRestrictionStore $blockRestrictionStore,
        CommentStore $commentStore,
        HideUserUtils $hideUserUtils
    ) {
        parent::__construct( $query, $moduleName, 'bk' );
        $this->blockStore = $blockStore;
        $this->blockActionInfo = $blockActionInfo;
        $this->blockRestrictionStore = $blockRestrictionStore;
        $this->commentStore = $commentStore;
        $this->hideUserUtils = $hideUserUtils;
        $this->blockTargetReadStage = $this->getConfig()
            ->get( MainConfigNames::BlockTargetMigrationStage ) & SCHEMA_COMPAT_READ_MASK;
    }
 
    public function execute() {
        $db = $this->getDB();
        $params = $this->extractRequestParams();
        $this->requireMaxOneParameter( $params, 'users', 'ip' );
 
        $prop = array_fill_keys( $params['prop'], true );
        $fld_id = isset( $prop['id'] );
        $fld_user = isset( $prop['user'] );
        $fld_userid = isset( $prop['userid'] );
        $fld_by = isset( $prop['by'] );
        $fld_byid = isset( $prop['byid'] );
        $fld_timestamp = isset( $prop['timestamp'] );
        $fld_expiry = isset( $prop['expiry'] );
        $fld_reason = isset( $prop['reason'] );
        $fld_range = isset( $prop['range'] );
        $fld_flags = isset( $prop['flags'] );
        $fld_restrictions = isset( $prop['restrictions'] );
 
        $result = $this->getResult();
 
        if ( $this->blockTargetReadStage === SCHEMA_COMPAT_READ_OLD ) {
            $this->addTables( 'ipblocks' );
            $this->addFields( [ 'ipb_auto', 'ipb_id', 'ipb_timestamp', 'ipb_user' ] );
            $this->addFieldsIf( [ 'ipb_address', 'ipb_user' ], $fld_user || $fld_userid );
            $bt_range_start = 'ipb_range_start';
            $bt_range_end = 'ipb_range_end';
            $bt_user = 'ipb_user';
            $bt_auto = 'ipb_auto';
            $bt_address_or_user_name = 'ipb_address';
            $bl_by_actor = 'ipb_by_actor';
            $bl_expiry = 'ipb_expiry';
            $bl_anon_only = 'ipb_anon_only';
            $bl_create_account = 'ipb_create_account';
            $bl_enable_autoblock = 'ipb_enable_autoblock';
            $bl_block_email = 'ipb_block_email';
            $bl_deleted = 'ipb_deleted';
            $bl_allow_usertalk = 'ipb_allow_usertalk';
            $bl_sitewide = 'ipb_sitewide';
            $bl_reason = 'ipb_reason';
            $bl_timestamp = 'ipb_timestamp';
            $bl_id = 'ipb_id';
            $blockTable = 'ipblocks';
        } else {
            $this->addTables( [ 'block', 'block_target', 'block_target_user' => 'user' ] );
            $this->addJoinConds( [
                'block_target' => [ 'JOIN', 'bt_id=bl_target' ],
                'block_target_user' => [ 'LEFT JOIN', 'user_id=bt_user' ]
            ] );
            $this->addFields( [ 'bt_auto', 'bl_id', 'bl_timestamp' ] );
            $this->addFieldsIf(
                [
                    'bt_address',
                    'bt_user',
                    'bt_address_or_user_name' => 'COALESCE(bt_address, bt_user_text)'
                ],
                $fld_user || $fld_userid
            );
            $bt_range_start = 'bt_range_start';
            $bt_range_end = 'bt_range_end';
            $bt_user = 'bt_user';
            $bt_auto = 'bt_auto';
            $bt_address_or_user_name = 'bt_address_or_user_name';
            $bl_by_actor = 'bl_by_actor';
            $bl_expiry = 'bl_expiry';
            $bl_anon_only = 'bl_anon_only';
            $bl_create_account = 'bl_create_account';
            $bl_enable_autoblock = 'bl_enable_autoblock';
            $bl_block_email = 'bl_block_email';
            $bl_deleted = 'bl_deleted';
            $bl_allow_usertalk = 'bl_allow_usertalk';
            $bl_sitewide = 'bl_sitewide';
            $bl_reason = 'bl_reason';
            $bl_timestamp = 'bl_timestamp';
            $bl_id = 'bl_id';
            $blockTable = 'block';
        }
 
        if ( $fld_by || $fld_byid ) {
            $this->addTables( 'actor' );
            $this->addFields( [ 'actor_user', 'actor_name' ] );
            $this->addJoinConds( [ 'actor' => [ 'JOIN', "actor_id=$bl_by_actor" ] ] );
        }
        $this->addFieldsIf( $bl_expiry, $fld_expiry );
        $this->addFieldsIf( [ $bt_range_start, $bt_range_end ], $fld_range );
        $this->addFieldsIf( [ $bl_anon_only, $bl_create_account, $bl_enable_autoblock,
            $bl_block_email, $bl_deleted, $bl_allow_usertalk, $bl_sitewide ],
            $fld_flags );
        $this->addFieldsIf( $bl_sitewide, $fld_restrictions );
 
        if ( $fld_reason ) {
            $commentQuery = $this->commentStore->getJoin( $bl_reason );
            $this->addTables( $commentQuery['tables'] );
            $this->addFields( $commentQuery['fields'] );
            $this->addJoinConds( $commentQuery['joins'] );
        }
 
        $this->addOption( 'LIMIT', $params['limit'] + 1 );
        $this->addTimestampWhereRange(
            $bl_timestamp,
            $params['dir'],
            $params['start'],
            $params['end']
        );
        // Include in ORDER BY for uniqueness
        $this->addWhereRange( $bl_id, $params['dir'], null, null );
 
        if ( $params['continue'] !== null ) {
            $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'timestamp', 'int' ] );
            $op = ( $params['dir'] == 'newer' ? '>=' : '<=' );
            $this->addWhere( $db->buildComparison( $op, [
                $bl_timestamp => $db->timestamp( $cont[0] ),
                $bl_id => $cont[1],
            ] ) );
        }
 
        if ( $params['ids'] ) {
            $this->addWhereIDsFld( $blockTable, $bl_id, $params['ids'] );
        }
        if ( $params['users'] ) {
            if ( $this->blockTargetReadStage === SCHEMA_COMPAT_READ_OLD ) {
                $this->addWhereFld( 'ipb_address', $params['users'] );
            } else {
                $addresses = [];
                $userNames = [];
                foreach ( $params['users'] as $target ) {
                    if ( IPUtils::isValid( $target ) || IPUtils::isValidRange( $target ) ) {
                        $addresses[] = $target;
                    } else {
                        $userNames[] = $target;
                    }
                }
                if ( $addresses && $userNames ) {
                    // Use a union, not "OR" (T360088)
                    $ids = $db->newUnionQueryBuilder()
                        ->add( $db->newSelectQueryBuilder()
                            ->select( 'bt_id' )
                            ->from( 'block_target' )
                            ->where( [ 'bt_address' => $addresses ] )
                        )
                        ->add( $db->newSelectQueryBuilder()
                            ->select( 'bt_id' )
                            ->from( 'block_target' )
                            ->join( 'user', null, 'user_id=bt_user' )
                            ->where( [ 'user_name' => $userNames ] )
                        )
                        ->caller( __METHOD__ )
                        ->fetchFieldValues();
                    if ( $ids ) {
                        $this->addWhere( [ 'bt_id' => $ids ] );
                    } else {
                        $this->addWhere( '1=0' );
                    }
                } elseif ( $addresses ) {
                    $this->addWhere( [ 'bt_address' => $addresses ] );
                } elseif ( $userNames ) {
                    $this->addWhere( [ 'block_target_user.user_name' => $userNames ] );
                } else {
                    // Unreachable since $params['users'] is non-empty
                    $this->addWhere( '1=0' );
                }
            }
            $this->addWhereFld( $bt_auto, 0 );
        }
        if ( $params['ip'] !== null ) {
            $blockCIDRLimit = $this->getConfig()->get( MainConfigNames::BlockCIDRLimit );
            if ( IPUtils::isIPv4( $params['ip'] ) ) {
                $type = 'IPv4';
                $cidrLimit = $blockCIDRLimit['IPv4'];
            } elseif ( IPUtils::isIPv6( $params['ip'] ) ) {
                $type = 'IPv6';
                $cidrLimit = $blockCIDRLimit['IPv6'];
            } else {
                $this->dieWithError( 'apierror-badip', 'param_ip' );
            }
 
            // Check range validity, if it's a CIDR
            [ $ip, $range ] = IPUtils::parseCIDR( $params['ip'] );
            if ( $ip !== false && $range !== false && $range < $cidrLimit ) {
                $this->dieWithError( [ 'apierror-cidrtoobroad', $type, $cidrLimit ] );
            }
 
            // Let IPUtils::parseRange handle calculating $upper, instead of duplicating the logic here.
            [ $lower, $upper ] = IPUtils::parseRange( $params['ip'] );
 
            $this->addWhere( $this->blockStore->getRangeCond(
                $lower, $upper, DatabaseBlockStore::SCHEMA_CURRENT ) );
            $this->addWhere( [ $bt_auto => 0 ] );
        }
 
        if ( $params['show'] !== null ) {
            $show = array_fill_keys( $params['show'], true );
 
            // Check for conflicting parameters.
            if ( ( isset( $show['account'] ) && isset( $show['!account'] ) )
                || ( isset( $show['ip'] ) && isset( $show['!ip'] ) )
                || ( isset( $show['range'] ) && isset( $show['!range'] ) )
                || ( isset( $show['temp'] ) && isset( $show['!temp'] ) )
            ) {
                $this->dieWithError( 'apierror-show' );
            }
 
            $this->addWhereIf( [ $bt_user => 0 ], isset( $show['!account'] ) );
            $this->addWhereIf( "$bt_user != 0", isset( $show['account'] ) );
            $this->addWhereIf( "$bt_user != 0 OR $bt_range_end > $bt_range_start", isset( $show['!ip'] ) );
            $this->addWhereIf( "$bt_user = 0 AND $bt_range_end = $bt_range_start", isset( $show['ip'] ) );
            $this->addWhereIf( [ $bl_expiry => $db->getInfinity() ], isset( $show['!temp'] ) );
            $this->addWhereIf( $db->expr( $bl_expiry, '!=', $db->getInfinity() ), isset( $show['temp'] ) );
            $this->addWhereIf( "$bt_range_end = $bt_range_start", isset( $show['!range'] ) );
            $this->addWhereIf( "$bt_range_end > $bt_range_start", isset( $show['range'] ) );
        }
 
        if ( !$this->getAuthority()->isAllowed( 'hideuser' ) ) {
            if ( $this->blockTargetReadStage === SCHEMA_COMPAT_READ_OLD ) {
                $this->addWhereFld( $bl_deleted, 0 );
            } else {
                $this->addWhere(
                    $this->hideUserUtils->getExpression( $db, 'block_target.bt_user' )
                );
            }
        }
 
        // Filter out expired rows
        $this->addWhere( $db->expr( $bl_expiry, '>', $db->timestamp() ) );
 
        $res = $this->select( __METHOD__ );
 
        $restrictions = [];
        if ( $fld_restrictions ) {
            $restrictions = $this->getRestrictionData( $res, $params['limit'] );
        }
 
        $count = 0;
        foreach ( $res as $row ) {
            if ( ++$count > $params['limit'] ) {
                // We've had enough
                $this->setContinueEnumParameter( 'continue', "{$row->$bl_timestamp}|{$row->$bl_id}" );
                break;
            }
            $block = [
                ApiResult::META_TYPE => 'assoc',
            ];
            if ( $fld_id ) {
                $block['id'] = (int)$row->$bl_id;
            }
            if ( $fld_user && !$row->$bt_auto ) {
                $block['user'] = $row->$bt_address_or_user_name;
            }
            if ( $fld_userid && !$row->$bt_auto ) {
                $block['userid'] = (int)$row->$bt_user;
            }
            if ( $fld_by ) {
                $block['by'] = $row->actor_name;
            }
            if ( $fld_byid ) {
                $block['byid'] = (int)$row->actor_user;
            }
            if ( $fld_timestamp ) {
                $block['timestamp'] = wfTimestamp( TS_ISO_8601, $row->$bl_timestamp );
            }
            if ( $fld_expiry ) {
                $block['expiry'] = ApiResult::formatExpiry( $row->$bl_expiry );
            }
            if ( $fld_reason ) {
                $block['reason'] = $this->commentStore->getComment( $bl_reason, $row )->text;
            }
            if ( $fld_range && !$row->$bt_auto && $row->$bt_range_start !== null ) {
                $block['rangestart'] = IPUtils::formatHex( $row->$bt_range_start );
                $block['rangeend'] = IPUtils::formatHex( $row->$bt_range_end );
            }
            if ( $fld_flags ) {
                // For clarity, these flags use the same names as their action=block counterparts
                $block['automatic'] = (bool)$row->$bt_auto;
                $block['anononly'] = (bool)$row->$bl_anon_only;
                $block['nocreate'] = (bool)$row->$bl_create_account;
                $block['autoblock'] = (bool)$row->$bl_enable_autoblock;
                $block['noemail'] = (bool)$row->$bl_block_email;
                $block['hidden'] = (bool)$row->$bl_deleted;
                $block['allowusertalk'] = (bool)$row->$bl_allow_usertalk;
                $block['partial'] = !(bool)$row->$bl_sitewide;
            }
 
            if ( $fld_restrictions ) {
                $block['restrictions'] = [];
                if ( !$row->$bl_sitewide && isset( $restrictions[$row->$bl_id] ) ) {
                    $block['restrictions'] = $restrictions[$row->$bl_id];
                }
            }
 
            $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $block );
            if ( !$fit ) {
                $this->setContinueEnumParameter( 'continue', "{$row->$bl_timestamp}|{$row->$bl_id}" );
                break;
            }
        }
        $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'block' );
    }
 
    private function getRestrictionData( IResultWrapper $result, $limit ) {
        $partialIds = [];
        $count = 0;
        foreach ( $result as $row ) {
            if ( ++$count <= $limit && !( $row->ipb_sitewide ?? $row->bl_sitewide ) ) {
                $partialIds[] = (int)( $row->ipb_id ?? $row->bl_id );
            }
        }
 
        $restrictions = $this->blockRestrictionStore->loadByBlockId( $partialIds );
 
        $data = [];
        $keys = [
            'page' => 'pages',
            'ns' => 'namespaces',
        ];
        if ( $this->getConfig()->get( MainConfigNames::EnablePartialActionBlocks ) ) {
            $keys['action'] = 'actions';
        }
 
        foreach ( $restrictions as $restriction ) {
            $key = $keys[$restriction->getType()];
            $id = $restriction->getBlockId();
            switch ( $restriction->getType() ) {
                case 'page':
                    '@phan-var \MediaWiki\Block\Restriction\PageRestriction $restriction';
                    $value = [ 'id' => $restriction->getValue() ];
                    if ( $restriction->getTitle() ) {
                        self::addTitleInfo( $value, $restriction->getTitle() );
                    }
                    break;
                case 'action':
                    $value = $this->blockActionInfo->getActionFromId( $restriction->getValue() );
                    break;
                default:
                    $value = $restriction->getValue();
            }
 
            if ( !isset( $data[$id][$key] ) ) {
                $data[$id][$key] = [];
                ApiResult::setIndexedTagName( $data[$id][$key], $restriction->getType() );
            }
            $data[$id][$key][] = $value;
        }
 
        return $data;
    }
 
    public function getAllowedParams() {
        $blockCIDRLimit = $this->getConfig()->get( MainConfigNames::BlockCIDRLimit );
 
        return [
            'start' => [
                ParamValidator::PARAM_TYPE => 'timestamp'
            ],
            'end' => [
                ParamValidator::PARAM_TYPE => 'timestamp',
            ],
            'dir' => [
                ParamValidator::PARAM_TYPE => [
                    'newer',
                    'older'
                ],
                ParamValidator::PARAM_DEFAULT => 'older',
                ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [
                    'newer' => 'api-help-paramvalue-direction-newer',
                    'older' => 'api-help-paramvalue-direction-older',
                ],
            ],
            'ids' => [
                ParamValidator::PARAM_TYPE => 'integer',
                ParamValidator::PARAM_ISMULTI => true
            ],
            'users' => [
                ParamValidator::PARAM_TYPE => 'user',
                UserDef::PARAM_ALLOWED_USER_TYPES => [ 'name', 'ip', 'temp', 'cidr' ],
                ParamValidator::PARAM_ISMULTI => true
            ],
            'ip' => [
                ApiBase::PARAM_HELP_MSG => [
                    'apihelp-query+blocks-param-ip',
                    $blockCIDRLimit['IPv4'],
                    $blockCIDRLimit['IPv6'],
                ],
            ],
            'limit' => [
                ParamValidator::PARAM_DEFAULT => 10,
                ParamValidator::PARAM_TYPE => 'limit',
                IntegerDef::PARAM_MIN => 1,
                IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
                IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
            ],
            'prop' => [
                ParamValidator::PARAM_DEFAULT => 'id|user|by|timestamp|expiry|reason|flags',
                ParamValidator::PARAM_TYPE => [
                    'id',
                    'user',
                    'userid',
                    'by',
                    'byid',
                    'timestamp',
                    'expiry',
                    'reason',
                    'range',
                    'flags',
                    'restrictions',
                ],
                ParamValidator::PARAM_ISMULTI => true,
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
            ],
            'show' => [
                ParamValidator::PARAM_TYPE => [
                    'account',
                    '!account',
                    'temp',
                    '!temp',
                    'ip',
                    '!ip',
                    'range',
                    '!range',
                ],
                ParamValidator::PARAM_ISMULTI => true
            ],
            'continue' => [
                ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
            ],
        ];
    }
 
    protected function getExamplesMessages() {
        return [
            'action=query&list=blocks'
                => 'apihelp-query+blocks-example-simple',
            'action=query&list=blocks&bkusers=Alice|Bob'
                => 'apihelp-query+blocks-example-users',
        ];
    }
 
    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Blocks';
    }
}