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<?php
/**
* Contain classes for dealing with individual log entries
*
* This is how I see the log system history:
* - appending to plain wiki pages
* - formatting log entries based on database fields
* - user is now part of the action message
*
* 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 http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
* @since 1.19
*/
/**
* Interface for log entries. Every log entry has these methods.
*
* @since 1.19
*/
interface LogEntry {
/**
* The main log type.
*
* @return string
*/
public function getType();
/**
* The log subtype.
*
* @return string
*/
public function getSubtype();
/**
* The full logtype in format maintype/subtype.
*
* @return string
*/
public function getFullType();
/**
* Get the extra parameters stored for this message.
*
* @return array
*/
public function getParameters();
/**
* Get the user for performed this action.
*
* @return User
*/
public function getPerformer();
/**
* Get the target page of this action.
*
* @return Title
*/
public function getTarget();
/**
* Get the timestamp when the action was executed.
*
* @return string
*/
public function getTimestamp();
/**
* Get the user provided comment.
*
* @return string
*/
public function getComment();
/**
* Get the access restriction.
*
* @return string
*/
public function getDeleted();
/**
* @param int $field One of LogPage::DELETED_* bitfield constants
* @return bool
*/
public function isDeleted( $field );
}
/**
* Extends the LogEntryInterface with some basic functionality
*
* @since 1.19
*/
abstract class LogEntryBase implements LogEntry {
public function getFullType() {
return $this->getType() . '/' . $this->getSubtype();
}
public function isDeleted( $field ) {
return ( $this->getDeleted() & $field ) === $field;
}
/**
* Whether the parameters for this log are stored in new or
* old format.
*
* @return bool
*/
public function isLegacy() {
return false;
}
/**
* Create a blob from a parameter array
*
* @since 1.26
* @param array $params
* @return string
*/
public static function makeParamBlob( $params ) {
return serialize( (array)$params );
}
/**
* Extract a parameter array from a blob
*
* @since 1.26
* @param string $blob
* @return array
*/
public static function extractParams( $blob ) {
return unserialize( $blob );
}
}
/**
* This class wraps around database result row.
*
* @since 1.19
*/
class DatabaseLogEntry extends LogEntryBase {
/**
* Returns array of information that is needed for querying
* log entries. Array contains the following keys:
* tables, fields, conds, options and join_conds
*
* @return array
*/
public static function getSelectQueryData() {
$tables = [ 'logging', 'user' ];
$fields = [
'log_id', 'log_type', 'log_action', 'log_timestamp',
'log_user', 'log_user_text',
'log_namespace', 'log_title', // unused log_page
'log_comment', 'log_params', 'log_deleted',
'user_id', 'user_name', 'user_editcount',
];
$joins = [
// IPs don't have an entry in user table
'user' => [ 'LEFT JOIN', 'log_user=user_id' ],
];
return [
'tables' => $tables,
'fields' => $fields,
'conds' => [],
'options' => [],
'join_conds' => $joins,
];
}
/**
* Constructs new LogEntry from database result row.
* Supports rows from both logging and recentchanges table.
*
* @param stdClass|array $row
* @return DatabaseLogEntry
*/
public static function newFromRow( $row ) {
$row = (object)$row;
if ( isset( $row->rc_logid ) ) {
return new RCDatabaseLogEntry( $row );
} else {
return new self( $row );
}
}
/** @var stdClass Database result row. */
protected $row;
/** @var User */
protected $performer;
/** @var array Parameters for log entry */
protected $params;
/** @var int A rev id associated to the log entry */
protected $revId = null;
/** @var bool Whether the parameters for this log entry are stored in new or old format. */
protected $legacy;
protected function __construct( $row ) {
$this->row = $row;
}
/**
* Returns the unique database id.
*
* @return int
*/
public function getId() {
return (int)$this->row->log_id;
}
/**
* Returns whatever is stored in the database field.
*
* @return string
*/
protected function getRawParameters() {
return $this->row->log_params;
}
public function isLegacy() {
// This extracts the property
$this->getParameters();
return $this->legacy;
}
public function getType() {
return $this->row->log_type;
}
public function getSubtype() {
return $this->row->log_action;
}
public function getParameters() {
if ( !isset( $this->params ) ) {
$blob = $this->getRawParameters();
MediaWiki\suppressWarnings();
$params = LogEntryBase::extractParams( $blob );
MediaWiki\restoreWarnings();
if ( $params !== false ) {
$this->params = $params;
$this->legacy = false;
} else {
$this->params = LogPage::extractParams( $blob );
$this->legacy = true;
}
if ( isset( $this->params['associated_rev_id'] ) ) {
$this->revId = $this->params['associated_rev_id'];
unset( $this->params['associated_rev_id'] );
}
}
return $this->params;
}
public function getAssociatedRevId() {
// This extracts the property
$this->getParameters();
return $this->revId;
}
public function getPerformer() {
if ( !$this->performer ) {
$userId = (int)$this->row->log_user;
if ( $userId !== 0 ) {
// logged-in users
if ( isset( $this->row->user_name ) ) {
$this->performer = User::newFromRow( $this->row );
} else {
$this->performer = User::newFromId( $userId );
}
} else {
// IP users
$userText = $this->row->log_user_text;
$this->performer = User::newFromName( $userText, false );
}
}
return $this->performer;
}
public function getTarget() {
$namespace = $this->row->log_namespace;
$page = $this->row->log_title;
$title = Title::makeTitle( $namespace, $page );
return $title;
}
public function getTimestamp() {
return wfTimestamp( TS_MW, $this->row->log_timestamp );
}
public function getComment() {
return $this->row->log_comment;
}
public function getDeleted() {
return $this->row->log_deleted;
}
}
class RCDatabaseLogEntry extends DatabaseLogEntry {
public function getId() {
return $this->row->rc_logid;
}
protected function getRawParameters() {
return $this->row->rc_params;
}
public function getAssociatedRevId() {
return $this->row->rc_this_oldid;
}
public function getType() {
return $this->row->rc_log_type;
}
public function getSubtype() {
return $this->row->rc_log_action;
}
public function getPerformer() {
if ( !$this->performer ) {
$userId = (int)$this->row->rc_user;
if ( $userId !== 0 ) {
$this->performer = User::newFromId( $userId );
} else {
$userText = $this->row->rc_user_text;
// Might be an IP, don't validate the username
$this->performer = User::newFromName( $userText, false );
}
}
return $this->performer;
}
public function getTarget() {
$namespace = $this->row->rc_namespace;
$page = $this->row->rc_title;
$title = Title::makeTitle( $namespace, $page );
return $title;
}
public function getTimestamp() {
return wfTimestamp( TS_MW, $this->row->rc_timestamp );
}
public function getComment() {
return $this->row->rc_comment;
}
public function getDeleted() {
return $this->row->rc_deleted;
}
}
/**
* Class for creating log entries manually, to inject them into the database.
*
* @since 1.19
*/
class ManualLogEntry extends LogEntryBase {
/** @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 User 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 array Change tags add to the log entry */
protected $tags = null;
/** @var int Deletion state of the log entry */
protected $deleted;
/** @var int ID of the log entry */
protected $id;
/** @var Can this log entry be patrolled? */
protected $isPatrollable = false;
/** @var bool Whether this is a legacy log entry */
protected $legacy = false;
/**
* Constructor.
*
* @since 1.19
* @param string $type
* @param string $subtype
*/
public function __construct( $type, $subtype ) {
$this->type = $type;
$this->subtype = $subtype;
}
/**
* Set extra log parameters.
*
* You can pass params 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, the first three parameters are
* hardcoded for every message.
*
* 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.
*
* Example:
* $entry->setParameters(
* '4::color' => 'blue',
* '5:number:count' => 3000,
* 'animal' => 'dog'
* );
*
* @since 1.19
* @param array $parameters Associative array
*/
public function setParameters( $parameters ) {
$this->parameters = $parameters;
}
/**
* Declare arbitrary tag/value relations to this log entry.
* These can be used to filter log entries later on.
*
* @param array $relations Map of (tag => (list of values|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 User $performer
*/
public function setPerformer( User $performer ) {
$this->performer = $performer;
}
/**
* Set the title of the object changed.
*
* @since 1.19
* @param Title $target
*/
public function setTarget( Title $target ) {
$this->target = $target;
}
/**
* Set the timestamp of when the logged action took place.
*
* @since 1.19
* @param string $timestamp
*/
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( $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;
}
/**
* Set change tags for the log entry.
*
* @since 1.27
* @param string|string[] $tags
*/
public function setTags( $tags ) {
if ( is_string( $tags ) ) {
$tags = [ $tags ];
}
$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;
}
/**
* Insert the entry into the `logging` table.
*
* @param IDatabase $dbw
* @return int ID of the log entry
* @throws MWException
*/
public function insert( IDatabase $dbw = null ) {
global $wgContLang;
$dbw = $dbw ?: wfGetDB( DB_MASTER );
$id = $dbw->nextSequenceValue( 'logging_log_id_seq' );
if ( $this->timestamp === null ) {
$this->timestamp = wfTimestampNow();
}
// Trim spaces on user supplied text
$comment = trim( $this->getComment() );
// Truncate for whole multibyte characters.
$comment = $wgContLang->truncate( $comment, 255 );
$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;
}
$data = [
'log_id' => $id,
'log_type' => $this->getType(),
'log_action' => $this->getSubtype(),
'log_timestamp' => $dbw->timestamp( $this->getTimestamp() ),
'log_user' => $this->getPerformer()->getId(),
'log_user_text' => $this->getPerformer()->getName(),
'log_namespace' => $this->getTarget()->getNamespace(),
'log_title' => $this->getTarget()->getDBkey(),
'log_page' => $this->getTarget()->getArticleID(),
'log_comment' => $comment,
'log_params' => LogEntryBase::makeParamBlob( $params ),
];
if ( isset( $this->deleted ) ) {
$data['log_deleted'] = $this->deleted;
}
$dbw->insert( 'logging', $data, __METHOD__ );
$this->id = !is_null( $id ) ? $id : $dbw->insertId();
$rows = [];
foreach ( $relations as $tag => $values ) {
if ( !strlen( $tag ) ) {
throw new MWException( "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->insert( 'log_search', $rows, __METHOD__, 'IGNORE' );
}
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 = LogFormatter::newFromEntry( $this );
$context = RequestContext::newExtraneousContext( $this->getTarget() );
$formatter->setContext( $context );
$logpage = SpecialPage::getTitleFor( 'Log', $this->getType() );
$user = $this->getPerformer();
$ip = "";
if ( $user->isAnon() ) {
// "MediaWiki default" and friends may have
// no IP address in their name
if ( IP::isIPAddress( $user->getName() ) ) {
$ip = $user->getName();
}
}
return RecentChange::newLogEntry(
$this->getTimestamp(),
$logpage,
$user,
$formatter->getPlainActionText(),
$ip,
$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()
);
}
/**
* Publish the log entry.
*
* @param int $newId Id of the log entry.
* @param string $to One of: rcandudp (default), rc, udp
* @return RecentChange|null
*/
public function publish( $newId, $to = 'rcandudp' ) {
$log = new LogPage( $this->getType() );
if ( $log->isRestricted() ) {
return null;
}
$rc = $this->getRecentChange( $newId );
if ( $to === 'rc' || $to === 'rcandudp' ) {
$rc->save( 'pleasedontudp' );
}
if ( $to === 'udp' || $to === 'rcandudp' ) {
$rc->notifyRCFeeds();
}
// Log the autopatrol if the log entry is patrollable
if ( $this->getIsPatrollable() &&
$rc->getAttribute( 'rc_patrolled' ) === 1 ) {
PatrolLog::record( $rc, true, $this->getPerformer() );
}
// Add change tags to the log entry and (if applicable) the associated revision
$tags = $this->getTags();
if ( !is_null( $tags ) ) {
$rcId = $rc->getAttribute( 'rc_id' );
$revId = $this->getAssociatedRevId(); // Use null if $revId is 0
ChangeTags::addTags( $tags, $rcId, $revId > 0 ? $revId : null, $newId );
}
return $rc;
}
public function getType() {
return $this->type;
}
public function getSubtype() {
return $this->subtype;
}
public function getParameters() {
return $this->parameters;
}
/**
* @return User
*/
public function getPerformer() {
return $this->performer;
}
/**
* @return Title
*/
public function getTarget() {
return $this->target;
}
public function getTimestamp() {
$ts = $this->timestamp !== null ? $this->timestamp : wfTimestampNow();
return wfTimestamp( TS_MW, $ts );
}
public function getComment() {
return $this->comment;
}
/**
* @since 1.27
* @return int
*/
public function getAssociatedRevId() {
return $this->revId;
}
/**
* @since 1.27
* @return array
*/
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 $this->legacy;
}
public function getDeleted() {
return (int)$this->deleted;
}
}