wikimedia/mediawiki-core

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includes/logging/ManualLogEntry.php

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<?php
/**
 * Contains a class for dealing with manual log entries
 *
 * 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
 * @author Niklas Laxström
 * @license GPL-2.0-or-later
 * @since 1.19
 */

use MediaWiki\ChangeTags\Taggable;
use MediaWiki\Context\RequestContext;
use MediaWiki\Deferred\DeferredUpdates;
use MediaWiki\HookContainer\HookRunner;
use MediaWiki\Linker\LinkTarget;
use MediaWiki\MediaWikiServices;
use MediaWiki\Page\PageReference;
use MediaWiki\SpecialPage\SpecialPage;
use MediaWiki\Title\Title;
use MediaWiki\User\UserIdentity;
use Wikimedia\Assert\Assert;
use Wikimedia\Rdbms\IDatabase;

/**
 * Class for creating new log entries and inserting them into the database.
 *
 * @newable
 * @note marked as newable in 1.35 for lack of a better alternative,
 *       but should be changed to use the builder pattern or the
 *       command pattern.
 * @since 1.19
 * @see https://www.mediawiki.org/wiki/Manual:Logging_to_Special:Log
 */
class ManualLogEntry extends LogEntryBase implements Taggable {
    /** @var string Type of log entry */
    protected $type;

    /** @var string Sub type of log entry */
    protected $subtype;

    /** @var array Parameters for log entry */
    protected $parameters = [];

    /** @var array */
    protected $relations = [];

    /** @var UserIdentity Performer of the action for the log entry */
    protected $performer;

    /** @var Title Target title for the log entry */
    protected $target;

    /** @var string Timestamp of creation of the log entry */
    protected $timestamp;

    /** @var string Comment for the log entry */
    protected $comment = '';

    /** @var int A rev id associated to the log entry */
    protected $revId = 0;

    /** @var string[] Change tags add to the log entry */
    protected $tags = [];

    /** @var int Deletion state of the log entry */
    protected $deleted;

    /** @var int ID of the log entry */
    protected $id;

    /** @var bool Can this log entry be patrolled? */
    protected $isPatrollable = false;

    /** @var bool Whether this is a legacy log entry */
    protected $legacy = false;

    /** @var bool|null The bot flag in the recent changes will be set to this value */
    protected $forceBotFlag = null;

    /**
     * @stable to call
     * @since 1.19
     * @param string $type Log type. Should match $wgLogTypes.
     * @param string $subtype Log subtype (action). Should match $wgLogActions or
     *   (together with $type) $wgLogActionsHandlers.
     * @note
     */
    public function __construct( $type, $subtype ) {
        $this->type = $type;
        $this->subtype = $subtype;
    }

    /**
     * Set extra log parameters.
     *
     * Takes an array in a parameter name => parameter value format. The array
     * will be converted to string via serialize() and stored in the log_params
     * database field. (If you want to store parameters in such a way that they
     * can be targeted by DB queries, use setRelations() instead.)
     *
     * You can pass these parameters to the log action message by prefixing the
     * keys with a number and optional type, using colons to separate the fields.
     * The numbering should start with number 4 (matching the $4 message
     * parameter), as the first three parameters are hardcoded for every message
     * ($1 is a link to the username and user talk page of the performing user,
     * $2 is just the username (for determining gender), $3 is a link to the
     * target page).
     *
     * If you want to store stuff that should not be available in messages, don't
     * prefix the array key with a number and don't use the colons. (Note that
     * such parameters will still be publicly viewable via the API.)
     *
     * Example:
     *   $entry->setParameters( [
     *     // store and use in messages as $4
     *     '4::color' => 'blue',
     *     // store as is, use in messages as $5 with Message::numParam()
     *     '5:number:count' => 3000,
     *     // store but do not use in messages
     *     'animal' => 'dog'
     *   ] );
     *
     * Typically, these parameters will be used in the logentry-<type>-<subtype>
     * message, but custom formatters, declared via $wgLogActionsHandlers, can
     * override that.
     *
     * @since 1.19
     * @param array $parameters Associative array
     * @see LogFormatter::formatParameterValue() for valid parameter types and
     *   their meanings.
     * @see self::setRelations() for storing parameters in a way that can be searched.
     * @see LogFormatter::getMessageKey() for determining which message these
     *   parameters will be used in.
     */
    public function setParameters( $parameters ) {
        $this->parameters = $parameters;
    }

    /**
     * Declare arbitrary tag/value relations to this log entry.
     * These will be stored in the log_search table and can be used
     * to filter log entries later on.
     *
     * @param array $relations Map of (tag => (list of values|value)); values must be string.
     *   When an array of values is given, a separate DB row will be created for each value.
     * @since 1.22
     */
    public function setRelations( array $relations ) {
        $this->relations = $relations;
    }

    /**
     * Set the user that performed the action being logged.
     *
     * @since 1.19
     * @param UserIdentity $performer
     */
    public function setPerformer( UserIdentity $performer ) {
        $this->performer = $performer;
    }

    /**
     * Set the title of the object changed.
     *
     * @param LinkTarget|PageReference $target calling with LinkTarget
     *   is deprecated since 1.37
     * @since 1.19
     */
    public function setTarget( $target ) {
        if ( $target instanceof PageReference ) {
            $this->target = Title::newFromPageReference( $target );
        } elseif ( $target instanceof LinkTarget ) {
            $this->target = Title::newFromLinkTarget( $target );
        } else {
            throw new InvalidArgumentException( "Invalid target provided" );
        }
    }

    /**
     * Set the timestamp of when the logged action took place.
     *
     * @since 1.19
     * @param string $timestamp Can be in any format accepted by ConvertibleTimestamp
     */
    public function setTimestamp( $timestamp ) {
        $this->timestamp = $timestamp;
    }

    /**
     * Set a comment associated with the action being logged.
     *
     * @since 1.19
     * @param string $comment
     */
    public function setComment( string $comment ) {
        $this->comment = $comment;
    }

    /**
     * Set an associated revision id.
     *
     * For example, the ID of the revision that was inserted to mark a page move
     * or protection, file upload, etc.
     *
     * @since 1.27
     * @param int $revId
     */
    public function setAssociatedRevId( $revId ) {
        $this->revId = $revId;
    }

    /**
     * Add change tags for the log entry
     *
     * @since 1.33
     * @param string|string[]|null $tags Tags to apply
     */
    public function addTags( $tags ) {
        if ( $tags === null ) {
            return;
        }

        if ( is_string( $tags ) ) {
            $tags = [ $tags ];
        }
        Assert::parameterElementType( 'string', $tags, 'tags' );
        $this->tags = array_unique( array_merge( $this->tags, $tags ) );
    }

    /**
     * Set whether this log entry should be made patrollable
     * This shouldn't depend on config, only on whether there is full support
     * in the software for patrolling this log entry.
     * False by default
     *
     * @since 1.27
     * @param bool $patrollable
     */
    public function setIsPatrollable( $patrollable ) {
        $this->isPatrollable = (bool)$patrollable;
    }

    /**
     * Set the 'legacy' flag
     *
     * @since 1.25
     * @param bool $legacy
     */
    public function setLegacy( $legacy ) {
        $this->legacy = $legacy;
    }

    /**
     * Set the 'deleted' flag.
     *
     * @since 1.19
     * @param int $deleted One of LogPage::DELETED_* bitfield constants
     */
    public function setDeleted( $deleted ) {
        $this->deleted = $deleted;
    }

    /**
     * Set the bot flag in the recent changes to this value.
     *
     * @since 1.40
     * @param bool $forceBotFlag
     */
    public function setForceBotFlag( bool $forceBotFlag ): void {
        $this->forceBotFlag = $forceBotFlag;
    }

    /**
     * Insert the entry into the `logging` table.
     *
     * @param IDatabase|null $dbw
     * @return int ID of the log entry
     */
    public function insert( IDatabase $dbw = null ) {
        $services = MediaWikiServices::getInstance();
        $dbw = $dbw ?: $services->getConnectionProvider()->getPrimaryDatabase();

        $this->timestamp ??= wfTimestampNow();
        $actorId = $services->getActorStore()->acquireActorId( $this->getPerformerIdentity(), $dbw );

        // Trim spaces on user supplied text
        $comment = trim( $this->getComment() ?? '' );

        $params = $this->getParameters();
        $relations = $this->relations;

        // Additional fields for which there's no space in the database table schema
        $revId = $this->getAssociatedRevId();
        if ( $revId ) {
            $params['associated_rev_id'] = $revId;
            $relations['associated_rev_id'] = $revId;
        }

        $row = [
            'log_type' => $this->getType(),
            'log_action' => $this->getSubtype(),
            'log_timestamp' => $dbw->timestamp( $this->getTimestamp() ),
            'log_actor' => $actorId,
            'log_namespace' => $this->getTarget()->getNamespace(),
            'log_title' => $this->getTarget()->getDBkey(),
            'log_page' => $this->getTarget()->getArticleID(),
            'log_params' => LogEntryBase::makeParamBlob( $params ),
        ];
        if ( isset( $this->deleted ) ) {
            $row['log_deleted'] = $this->deleted;
        }
        $row += $services->getCommentStore()->insert( $dbw, 'log_comment', $comment );

        $dbw->newInsertQueryBuilder()
            ->insertInto( 'logging' )
            ->row( $row )
            ->caller( __METHOD__ )
            ->execute();
        $this->id = $dbw->insertId();

        $rows = [];
        foreach ( $relations as $tag => $values ) {
            if ( !strlen( $tag ) ) {
                throw new UnexpectedValueException( "Got empty log search tag." );
            }

            if ( !is_array( $values ) ) {
                $values = [ $values ];
            }

            foreach ( $values as $value ) {
                $rows[] = [
                    'ls_field' => $tag,
                    'ls_value' => $value,
                    'ls_log_id' => $this->id
                ];
            }
        }
        if ( count( $rows ) ) {
            $dbw->newInsertQueryBuilder()
                ->insertInto( 'log_search' )
                ->ignore()
                ->rows( $rows )
                ->caller( __METHOD__ )
                ->execute();
        }

        return $this->id;
    }

    /**
     * Get a RecentChanges object for the log entry
     *
     * @param int $newId
     * @return RecentChange
     * @since 1.23
     */
    public function getRecentChange( $newId = 0 ) {
        $formatter = MediaWikiServices::getInstance()->getLogFormatterFactory()->newFromEntry( $this );
        $context = RequestContext::newExtraneousContext( $this->getTarget() );
        $formatter->setContext( $context );

        $logpage = SpecialPage::getTitleFor( 'Log', $this->getType() );

        return RecentChange::newLogEntry(
            $this->getTimestamp(),
            $logpage,
            $this->getPerformerIdentity(),
            $formatter->getPlainActionText(),
            '',
            $this->getType(),
            $this->getSubtype(),
            $this->getTarget(),
            $this->getComment(),
            LogEntryBase::makeParamBlob( $this->getParameters() ),
            $newId,
            $formatter->getIRCActionComment(), // Used for IRC feeds
            $this->getAssociatedRevId(), // Used for e.g. moves and uploads
            $this->getIsPatrollable(),
            $this->forceBotFlag
        );
    }

    /**
     * Publish the log entry.
     *
     * @param int $newId Id of the log entry.
     * @param string $to One of: rcandudp (default), rc, udp
     */
    public function publish( $newId, $to = 'rcandudp' ) {
        $canAddTags = true;
        // FIXME: this code should be removed once all callers properly call publish()
        if ( $to === 'udp' && !$newId && !$this->getAssociatedRevId() ) {
            \MediaWiki\Logger\LoggerFactory::getInstance( 'logging' )->warning(
                'newId and/or revId must be set when calling ManualLogEntry::publish()',
                [
                    'newId' => $newId,
                    'to' => $to,
                    'revId' => $this->getAssociatedRevId(),
                    // pass a new exception to register the stack trace
                    'exception' => new RuntimeException()
                ]
            );
            $canAddTags = false;
        }

        DeferredUpdates::addCallableUpdate(
            function () use ( $newId, $to, $canAddTags ) {
                $log = new LogPage( $this->getType() );
                if ( !$log->isRestricted() ) {
                    ( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) )
                        ->onManualLogEntryBeforePublish( $this );
                    $rc = $this->getRecentChange( $newId );

                    if ( $to === 'rc' || $to === 'rcandudp' ) {
                        // save RC, passing tags so they are applied there
                        $rc->addTags( $this->getTags() );
                        $rc->save( $rc::SEND_NONE );
                    } else {
                        $tags = $this->getTags();
                        if ( $tags && $canAddTags ) {
                            $revId = $this->getAssociatedRevId();
                            MediaWikiServices::getInstance()->getChangeTagsStore()->addTags(
                                $tags,
                                null,
                                $revId > 0 ? $revId : null,
                                $newId > 0 ? $newId : null
                            );
                        }
                    }

                    if ( $to === 'udp' || $to === 'rcandudp' ) {
                        $rc->notifyRCFeeds();
                    }
                }
            },
            DeferredUpdates::POSTSEND,
            MediaWikiServices::getInstance()->getConnectionProvider()->getPrimaryDatabase()
        );
    }

    /**
     * @return string
     */
    public function getType() {
        return $this->type;
    }

    /**
     * @return string
     */
    public function getSubtype() {
        return $this->subtype;
    }

    /**
     * @return array
     */
    public function getParameters() {
        return $this->parameters;
    }

    /**
     * @return UserIdentity
     */
    public function getPerformerIdentity(): UserIdentity {
        return $this->performer;
    }

    /**
     * @return Title
     */
    public function getTarget() {
        return $this->target;
    }

    /**
     * @return string|false TS_MW timestamp, a string with 14 digits
     */
    public function getTimestamp() {
        $ts = $this->timestamp ?? wfTimestampNow();

        return wfTimestamp( TS_MW, $ts );
    }

    /**
     * @return string
     */
    public function getComment() {
        return $this->comment;
    }

    /**
     * @since 1.27
     * @return int
     */
    public function getAssociatedRevId() {
        return $this->revId;
    }

    /**
     * @since 1.27
     * @return string[]
     */
    public function getTags() {
        return $this->tags;
    }

    /**
     * Whether this log entry is patrollable
     *
     * @since 1.27
     * @return bool
     */
    public function getIsPatrollable() {
        return $this->isPatrollable;
    }

    /**
     * @since 1.25
     * @return bool
     */
    public function isLegacy() {
        return $this->legacy;
    }

    /**
     * @return int
     */
    public function getDeleted() {
        return (int)$this->deleted;
    }
}