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| 1 | <?php |
| 2 | /** |
| 3 | * Contains a class for dealing with database log entries |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @author Niklas Laxström |
| 22 | * @license GPL-2.0-or-later |
| 23 | * @since 1.19 |
| 24 | */ |
| 25 | |
| 26 | use MediaWiki\Logger\LoggerFactory; |
| 27 | use MediaWiki\Logging\LoggingSelectQueryBuilder; |
| 28 | use MediaWiki\MediaWikiServices; |
| 29 | use MediaWiki\User\UserIdentity; |
| 30 | use Wikimedia\AtEase\AtEase; |
| 31 | use Wikimedia\Rdbms\IReadableDatabase; |
| 32 | |
| 33 | /** |
| 34 | * A value class to process existing log entries. In other words, this class caches a log |
| 35 | * entry from the database and provides an immutable object-oriented representation of it. |
| 36 | * |
| 37 | * This class should only be used in context of the LogFormatter class. |
| 38 | * |
| 39 | * @since 1.19 |
| 40 | */ |
| 41 | class DatabaseLogEntry extends LogEntryBase { |
| 42 | |
| 43 | /** |
| 44 | * Returns array of information that is needed for querying |
| 45 | * log entries. Array contains the following keys: |
| 46 | * tables, fields, conds, options and join_conds |
| 47 | * |
| 48 | * Since 1.34, log_user and log_user_text have not been present in the |
| 49 | * database, but they continue to be available in query results as |
| 50 | * aliases. |
| 51 | * |
| 52 | * @deprecated since 1.41 use ::newSelectQueryBuilder() instead |
| 53 | * |
| 54 | * @return array |
| 55 | */ |
| 56 | public static function getSelectQueryData() { |
| 57 | $commentQuery = MediaWikiServices::getInstance()->getCommentStore()->getJoin( 'log_comment' ); |
| 58 | |
| 59 | $tables = array_merge( |
| 60 | [ |
| 61 | 'logging', |
| 62 | 'logging_actor' => 'actor', |
| 63 | 'user' |
| 64 | ], |
| 65 | $commentQuery['tables'] |
| 66 | ); |
| 67 | $fields = [ |
| 68 | 'log_id', 'log_type', 'log_action', 'log_timestamp', |
| 69 | 'log_namespace', 'log_title', // unused log_page |
| 70 | 'log_params', 'log_deleted', |
| 71 | 'user_id', |
| 72 | 'user_name', |
| 73 | 'log_actor', |
| 74 | 'log_user' => 'logging_actor.actor_user', |
| 75 | 'log_user_text' => 'logging_actor.actor_name' |
| 76 | ] + $commentQuery['fields']; |
| 77 | |
| 78 | $joins = [ |
| 79 | 'logging_actor' => [ 'JOIN', 'actor_id=log_actor' ], |
| 80 | // IPs don't have an entry in user table |
| 81 | 'user' => [ 'LEFT JOIN', 'user_id=logging_actor.actor_user' ], |
| 82 | ] + $commentQuery['joins']; |
| 83 | |
| 84 | return [ |
| 85 | 'tables' => $tables, |
| 86 | 'fields' => $fields, |
| 87 | 'conds' => [], |
| 88 | 'options' => [], |
| 89 | 'join_conds' => $joins, |
| 90 | ]; |
| 91 | } |
| 92 | |
| 93 | public static function newSelectQueryBuilder( IReadableDatabase $db ) { |
| 94 | return new LoggingSelectQueryBuilder( $db ); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Constructs new LogEntry from database result row. |
| 99 | * Supports rows from both logging and recentchanges table. |
| 100 | * |
| 101 | * @param stdClass|array $row |
| 102 | * @return DatabaseLogEntry |
| 103 | */ |
| 104 | public static function newFromRow( $row ) { |
| 105 | $row = (object)$row; |
| 106 | if ( isset( $row->rc_logid ) ) { |
| 107 | return new RCDatabaseLogEntry( $row ); |
| 108 | } else { |
| 109 | return new self( $row ); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Loads a LogEntry with the given id from database. |
| 115 | * |
| 116 | * @param int $id |
| 117 | * @param IReadableDatabase $db |
| 118 | * @return DatabaseLogEntry|null |
| 119 | */ |
| 120 | public static function newFromId( $id, IReadableDatabase $db ) { |
| 121 | $row = self::newSelectQueryBuilder( $db ) |
| 122 | ->where( [ 'log_id' => $id ] ) |
| 123 | ->caller( __METHOD__ )->fetchRow(); |
| 124 | if ( !$row ) { |
| 125 | return null; |
| 126 | } |
| 127 | return self::newFromRow( $row ); |
| 128 | } |
| 129 | |
| 130 | /** @var stdClass Database result row. */ |
| 131 | protected $row; |
| 132 | |
| 133 | /** @var UserIdentity */ |
| 134 | protected $performer; |
| 135 | |
| 136 | /** @var array Parameters for log entry */ |
| 137 | protected $params; |
| 138 | |
| 139 | /** @var int A rev id associated to the log entry */ |
| 140 | protected $revId = null; |
| 141 | |
| 142 | /** @var bool Whether the parameters for this log entry are stored in new or old format. */ |
| 143 | protected $legacy; |
| 144 | |
| 145 | protected function __construct( $row ) { |
| 146 | $this->row = $row; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Returns the unique database id. |
| 151 | * |
| 152 | * @return int |
| 153 | */ |
| 154 | public function getId() { |
| 155 | return (int)( $this->row->log_id ?? 0 ); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Returns whatever is stored in the database field (typically a serialized |
| 160 | * associative array but very old entries might have different formats). |
| 161 | * |
| 162 | * @return string |
| 163 | */ |
| 164 | protected function getRawParameters() { |
| 165 | return $this->row->log_params; |
| 166 | } |
| 167 | |
| 168 | public function isLegacy() { |
| 169 | // This extracts the property |
| 170 | $this->getParameters(); |
| 171 | return $this->legacy; |
| 172 | } |
| 173 | |
| 174 | public function getType() { |
| 175 | return $this->row->log_type; |
| 176 | } |
| 177 | |
| 178 | public function getSubtype() { |
| 179 | return $this->row->log_action; |
| 180 | } |
| 181 | |
| 182 | public function getParameters() { |
| 183 | if ( !isset( $this->params ) ) { |
| 184 | $blob = $this->getRawParameters(); |
| 185 | AtEase::suppressWarnings(); |
| 186 | $params = LogEntryBase::extractParams( $blob ); |
| 187 | AtEase::restoreWarnings(); |
| 188 | if ( $params !== false ) { |
| 189 | $this->params = $params; |
| 190 | $this->legacy = false; |
| 191 | } else { |
| 192 | $this->params = LogPage::extractParams( $blob ); |
| 193 | $this->legacy = true; |
| 194 | } |
| 195 | |
| 196 | if ( isset( $this->params['associated_rev_id'] ) ) { |
| 197 | $this->revId = $this->params['associated_rev_id']; |
| 198 | unset( $this->params['associated_rev_id'] ); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | return $this->params; |
| 203 | } |
| 204 | |
| 205 | public function getAssociatedRevId() { |
| 206 | // This extracts the property |
| 207 | $this->getParameters(); |
| 208 | return $this->revId; |
| 209 | } |
| 210 | |
| 211 | public function getPerformerIdentity(): UserIdentity { |
| 212 | if ( !$this->performer ) { |
| 213 | $actorStore = MediaWikiServices::getInstance()->getActorStore(); |
| 214 | try { |
| 215 | $this->performer = $actorStore->newActorFromRowFields( |
| 216 | $this->row->user_id ?? 0, |
| 217 | $this->row->log_user_text ?? null, |
| 218 | $this->row->log_actor ?? null |
| 219 | ); |
| 220 | } catch ( InvalidArgumentException $e ) { |
| 221 | LoggerFactory::getInstance( 'logentry' )->warning( |
| 222 | 'Failed to instantiate log entry performer', [ |
| 223 | 'exception' => $e, |
| 224 | 'log_id' => $this->getId() |
| 225 | ] |
| 226 | ); |
| 227 | $this->performer = $actorStore->getUnknownActor(); |
| 228 | } |
| 229 | } |
| 230 | return $this->performer; |
| 231 | } |
| 232 | |
| 233 | public function getTarget() { |
| 234 | $namespace = $this->row->log_namespace; |
| 235 | $page = $this->row->log_title; |
| 236 | return MediaWikiServices::getInstance()->getTitleFactory()->makeTitle( $namespace, $page ); |
| 237 | } |
| 238 | |
| 239 | public function getTimestamp() { |
| 240 | return wfTimestamp( TS_MW, $this->row->log_timestamp ); |
| 241 | } |
| 242 | |
| 243 | public function getComment() { |
| 244 | return MediaWikiServices::getInstance()->getCommentStore() |
| 245 | ->getComment( 'log_comment', $this->row )->text; |
| 246 | } |
| 247 | |
| 248 | public function getDeleted() { |
| 249 | return $this->row->log_deleted; |
| 250 | } |
| 251 | } |