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| 1 | <?php |
| 2 | /** |
| 3 | * Send SQL queries from the specified file to the database, performing |
| 4 | * variable replacement along the way. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 19 | * http://www.gnu.org/copyleft/gpl.html |
| 20 | * |
| 21 | * @file |
| 22 | * @ingroup Maintenance |
| 23 | */ |
| 24 | |
| 25 | // @codeCoverageIgnoreStart |
| 26 | require_once __DIR__ . '/Maintenance.php'; |
| 27 | // @codeCoverageIgnoreEnd |
| 28 | |
| 29 | use MediaWiki\Installer\DatabaseUpdater; |
| 30 | use MediaWiki\Maintenance\Maintenance; |
| 31 | use Wikimedia\Rdbms\DBQueryError; |
| 32 | use Wikimedia\Rdbms\IDatabase; |
| 33 | use Wikimedia\Rdbms\IResultWrapper; |
| 34 | use Wikimedia\Rdbms\ServerInfo; |
| 35 | |
| 36 | /** |
| 37 | * Maintenance script that sends SQL queries from the specified file to the database. |
| 38 | * |
| 39 | * @ingroup Maintenance |
| 40 | */ |
| 41 | class MwSql extends Maintenance { |
| 42 | public function __construct() { |
| 43 | parent::__construct(); |
| 44 | $this->addDescription( 'Send SQL queries to a MediaWiki database. ' . |
| 45 | 'Takes a file name containing SQL as argument or runs interactively.' ); |
| 46 | $this->addOption( 'query', |
| 47 | 'Run a single query instead of running interactively', false, true ); |
| 48 | $this->addOption( 'json', 'Output the results as JSON instead of PHP objects' ); |
| 49 | $this->addOption( 'status', 'Return successful exit status only if the query succeeded ' |
| 50 | . '(selected or altered rows), otherwise 1 for errors, 2 for no rows' ); |
| 51 | $this->addOption( 'cluster', 'Use an external cluster by name', false, true ); |
| 52 | $this->addOption( 'wikidb', |
| 53 | 'The database wiki ID to use if not the current one', false, true ); |
| 54 | $this->addOption( 'replicadb', |
| 55 | 'Replica DB server to use instead of the primary DB (can be "any")', false, true ); |
| 56 | $this->setBatchSize( 100 ); |
| 57 | } |
| 58 | |
| 59 | public function execute() { |
| 60 | global $IP; |
| 61 | |
| 62 | // We want to allow "" for the wikidb, meaning don't call select_db() |
| 63 | $wiki = $this->hasOption( 'wikidb' ) ? $this->getOption( 'wikidb' ) : false; |
| 64 | // Get the appropriate load balancer (for this wiki) |
| 65 | $lbFactory = $this->getServiceContainer()->getDBLoadBalancerFactory(); |
| 66 | if ( $this->hasOption( 'cluster' ) ) { |
| 67 | $lb = $lbFactory->getExternalLB( $this->getOption( 'cluster' ) ); |
| 68 | } else { |
| 69 | $lb = $lbFactory->getMainLB( $wiki ); |
| 70 | } |
| 71 | // Figure out which server to use |
| 72 | $replicaDB = $this->getOption( 'replicadb', '' ); |
| 73 | if ( $replicaDB === 'any' ) { |
| 74 | $index = DB_REPLICA; |
| 75 | } elseif ( $replicaDB !== '' ) { |
| 76 | $index = null; |
| 77 | $serverCount = $lb->getServerCount(); |
| 78 | for ( $i = 0; $i < $serverCount; ++$i ) { |
| 79 | if ( $lb->getServerName( $i ) === $replicaDB ) { |
| 80 | $index = $i; |
| 81 | break; |
| 82 | } |
| 83 | } |
| 84 | // @phan-suppress-next-line PhanSuspiciousValueComparison |
| 85 | if ( $index === null || $index === ServerInfo::WRITER_INDEX ) { |
| 86 | $this->fatalError( "No replica DB server configured with the name '$replicaDB'." ); |
| 87 | } |
| 88 | } else { |
| 89 | $index = DB_PRIMARY; |
| 90 | } |
| 91 | |
| 92 | $db = $lb->getMaintenanceConnectionRef( $index, [], $wiki ); |
| 93 | if ( $replicaDB != '' && $db->getLBInfo( 'master' ) !== null ) { |
| 94 | $this->fatalError( "Server {$db->getServerName()} is not a replica DB." ); |
| 95 | } |
| 96 | |
| 97 | if ( $index === DB_PRIMARY ) { |
| 98 | $updater = DatabaseUpdater::newForDB( $db, true, $this ); |
| 99 | $db->setSchemaVars( $updater->getSchemaVars() ); |
| 100 | } |
| 101 | |
| 102 | if ( $this->hasArg( 0 ) ) { |
| 103 | $file = fopen( $this->getArg( 0 ), 'r' ); |
| 104 | if ( !$file ) { |
| 105 | $this->fatalError( "Unable to open input file" ); |
| 106 | } |
| 107 | |
| 108 | $error = $db->sourceStream( $file, null, [ $this, 'sqlPrintResult' ], __METHOD__ ); |
| 109 | if ( $error !== true ) { |
| 110 | $this->fatalError( $error ); |
| 111 | } |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | if ( $this->hasOption( 'query' ) ) { |
| 116 | $query = $this->getOption( 'query' ); |
| 117 | $res = $this->sqlDoQuery( $db, $query, /* dieOnError */ true ); |
| 118 | $this->waitForReplication(); |
| 119 | if ( $this->hasOption( 'status' ) && !$res ) { |
| 120 | $this->fatalError( 'Failed.', 2 ); |
| 121 | } |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | if ( |
| 126 | function_exists( 'readline_add_history' ) && |
| 127 | Maintenance::posix_isatty( 0 /*STDIN*/ ) |
| 128 | ) { |
| 129 | $home = getenv( 'HOME' ); |
| 130 | $historyFile = $home ? |
| 131 | "$home/.mwsql_history" : "$IP/maintenance/.mwsql_history"; |
| 132 | readline_read_history( $historyFile ); |
| 133 | } else { |
| 134 | $historyFile = null; |
| 135 | } |
| 136 | |
| 137 | $wholeLine = ''; |
| 138 | $newPrompt = '> '; |
| 139 | $prompt = $newPrompt; |
| 140 | $doDie = !Maintenance::posix_isatty( 0 ); |
| 141 | $res = 1; |
| 142 | $batchCount = 0; |
| 143 | // phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition |
| 144 | while ( ( $line = Maintenance::readconsole( $prompt ) ) !== false ) { |
| 145 | if ( !$line ) { |
| 146 | # User simply pressed return key |
| 147 | continue; |
| 148 | } |
| 149 | $done = $db->streamStatementEnd( $wholeLine, $line ); |
| 150 | |
| 151 | $wholeLine .= $line; |
| 152 | |
| 153 | if ( !$done ) { |
| 154 | $wholeLine .= ' '; |
| 155 | $prompt = ' -> '; |
| 156 | continue; |
| 157 | } |
| 158 | if ( $historyFile ) { |
| 159 | # Delimiter is eaten by streamStatementEnd, we add it |
| 160 | # up in the history (T39020) |
| 161 | readline_add_history( $wholeLine . ';' ); |
| 162 | readline_write_history( $historyFile ); |
| 163 | } |
| 164 | // @phan-suppress-next-line SecurityCheck-SQLInjection |
| 165 | $res = $this->sqlDoQuery( $db, $wholeLine, $doDie ); |
| 166 | if ( $this->getBatchSize() && ++$batchCount >= $this->getBatchSize() ) { |
| 167 | $batchCount = 0; |
| 168 | $this->waitForReplication(); |
| 169 | } |
| 170 | $prompt = $newPrompt; |
| 171 | $wholeLine = ''; |
| 172 | } |
| 173 | $this->waitForReplication(); |
| 174 | if ( $this->hasOption( 'status' ) && !$res ) { |
| 175 | $this->fatalError( 'Failed.', 2 ); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * @param IDatabase $db |
| 181 | * @param string $line The SQL text of the query |
| 182 | * @param bool $dieOnError |
| 183 | * @return int|null Number of rows selected or updated, or null if the query was unsuccessful. |
| 184 | */ |
| 185 | protected function sqlDoQuery( IDatabase $db, $line, $dieOnError ) { |
| 186 | try { |
| 187 | $res = $db->query( $line, __METHOD__ ); |
| 188 | return $this->sqlPrintResult( $res, $db ); |
| 189 | } catch ( DBQueryError $e ) { |
| 190 | if ( $dieOnError ) { |
| 191 | $this->fatalError( (string)$e ); |
| 192 | } else { |
| 193 | $this->error( (string)$e ); |
| 194 | } |
| 195 | } |
| 196 | return null; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Print the results, callback for $db->sourceStream() |
| 201 | * @param IResultWrapper|bool $res |
| 202 | * @param IDatabase $db |
| 203 | * @return int|null Number of rows selected or updated, or null if the query was unsuccessful. |
| 204 | */ |
| 205 | public function sqlPrintResult( $res, $db ) { |
| 206 | if ( !$res ) { |
| 207 | // Do nothing |
| 208 | return null; |
| 209 | } elseif ( is_object( $res ) ) { |
| 210 | $out = ''; |
| 211 | $rows = []; |
| 212 | foreach ( $res as $row ) { |
| 213 | $out .= print_r( $row, true ); |
| 214 | $rows[] = $row; |
| 215 | } |
| 216 | if ( $this->hasOption( 'json' ) ) { |
| 217 | $out = json_encode( $rows, JSON_PRETTY_PRINT ); |
| 218 | } elseif ( !$rows ) { |
| 219 | $out = 'Query OK, 0 row(s) affected'; |
| 220 | } |
| 221 | $this->output( $out . "\n" ); |
| 222 | return count( $rows ); |
| 223 | } else { |
| 224 | $affected = $db->affectedRows(); |
| 225 | if ( $this->hasOption( 'json' ) ) { |
| 226 | $this->output( json_encode( [ 'affected' => $affected ], JSON_PRETTY_PRINT ) . "\n" ); |
| 227 | } else { |
| 228 | $this->output( "Query OK, $affected row(s) affected\n" ); |
| 229 | } |
| 230 | return $affected; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * @return int DB_TYPE constant |
| 236 | */ |
| 237 | public function getDbType() { |
| 238 | return Maintenance::DB_ADMIN; |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | // @codeCoverageIgnoreStart |
| 243 | $maintClass = MwSql::class; |
| 244 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 245 | // @codeCoverageIgnoreEnd |