X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/includes/db/DatabaseMysql.php

diff --git a/includes/db/DatabaseMysql.php b/includes/db/DatabaseMysql.php
deleted file mode 100644
index ed276ec5..00000000
--- a/includes/db/DatabaseMysql.php
+++ /dev/null
@@ -1,607 +0,0 @@
-<?php
-/**
- * This is the MySQL database abstraction layer.
- *
- * @file
- * @ingroup Database
- */
-
-/**
- * Database abstraction object for mySQL
- * Inherit all methods and properties of Database::Database()
- *
- * @ingroup Database
- * @see Database
- */
-class DatabaseMysql extends DatabaseBase {
-	function getType() {
-		return 'mysql';
-	}
-
-	/*private*/ function doQuery( $sql ) {
-		if( $this->bufferResults() ) {
-			$ret = mysql_query( $sql, $this->mConn );
-		} else {
-			$ret = mysql_unbuffered_query( $sql, $this->mConn );
-		}
-		return $ret;
-	}
-
-	function open( $server, $user, $password, $dbName ) {
-		global $wgAllDBsAreLocalhost;
-		wfProfileIn( __METHOD__ );
-
-		# Load mysql.so if we don't have it
-		wfDl( 'mysql' );
-
-		# Fail now
-		# Otherwise we get a suppressed fatal error, which is very hard to track down
-		if ( !function_exists( 'mysql_connect' ) ) {
-			throw new DBConnectionError( $this, "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n" );
-		}
-
-		# Debugging hack -- fake cluster
-		if ( $wgAllDBsAreLocalhost ) {
-			$realServer = 'localhost';
-		} else {
-			$realServer = $server;
-		}
-		$this->close();
-		$this->mServer = $server;
-		$this->mUser = $user;
-		$this->mPassword = $password;
-		$this->mDBname = $dbName;
-
-		wfProfileIn("dbconnect-$server");
-
-		# The kernel's default SYN retransmission period is far too slow for us,
-		# so we use a short timeout plus a manual retry. Retrying means that a small
-		# but finite rate of SYN packet loss won't cause user-visible errors.
-		$this->mConn = false;
-		if ( ini_get( 'mysql.connect_timeout' ) <= 3 ) {
-			$numAttempts = 2;
-		} else {
-			$numAttempts = 1;
-		}
-		$this->installErrorHandler();
-		for ( $i = 0; $i < $numAttempts && !$this->mConn; $i++ ) {
-			if ( $i > 1 ) {
-				usleep( 1000 );
-			}
-			if ( $this->mFlags & DBO_PERSISTENT ) {
-				$this->mConn = mysql_pconnect( $realServer, $user, $password );
-			} else {
-				# Create a new connection...
-				$this->mConn = mysql_connect( $realServer, $user, $password, true );
-			}
-			#if ( $this->mConn === false ) {
-				#$iplus = $i + 1;
-				#wfLogDBError("Connect loop error $iplus of $max ($server): " . mysql_errno() . " - " . mysql_error()."\n");
-			#}
-		}
-		$phpError = $this->restoreErrorHandler();
-		# Always log connection errors
-		if ( !$this->mConn ) {
-			$error = $this->lastError();
-			if ( !$error ) {
-				$error = $phpError;
-			}
-			wfLogDBError( "Error connecting to {$this->mServer}: $error\n" );
-			wfDebug( "DB connection error\n" );
-			wfDebug( "Server: $server, User: $user, Password: " .
-				substr( $password, 0, 3 ) . "..., error: " . mysql_error() . "\n" );
-		}
-
-		wfProfileOut("dbconnect-$server");
-
-		if ( $dbName != '' && $this->mConn !== false ) {
-			$success = @/**/mysql_select_db( $dbName, $this->mConn );
-			if ( !$success ) {
-				$error = "Error selecting database $dbName on server {$this->mServer} " .
-					"from client host " . wfHostname() . "\n";
-				wfLogDBError(" Error selecting database $dbName on server {$this->mServer} \n");
-				wfDebug( $error );
-			}
-		} else {
-			# Delay USE query
-			$success = (bool)$this->mConn;
-		}
-
-		if ( $success ) {
-			$version = $this->getServerVersion();
-			if ( version_compare( $version, '4.1' ) >= 0 ) {
-				// Tell the server we're communicating with it in UTF-8.
-				// This may engage various charset conversions.
-				global $wgDBmysql5;
-				if( $wgDBmysql5 ) {
-					$this->query( 'SET NAMES utf8', __METHOD__ );
-				} else {
-					$this->query( 'SET NAMES binary', __METHOD__ );
-				}
-				// Set SQL mode, default is turning them all off, can be overridden or skipped with null
-				global $wgSQLMode;
-				if ( is_string( $wgSQLMode ) ) {
-					$mode = $this->addQuotes( $wgSQLMode );
-					$this->query( "SET sql_mode = $mode", __METHOD__ );
-				}
-			}
-
-			// Turn off strict mode if it is on
-		} else {
-			$this->reportConnectionError( $phpError );
-		}
-
-		$this->mOpened = $success;
-		wfProfileOut( __METHOD__ );
-		return $success;
-	}
-
-	function close() {
-		$this->mOpened = false;
-		if ( $this->mConn ) {
-			if ( $this->trxLevel() ) {
-				$this->commit();
-			}
-			return mysql_close( $this->mConn );
-		} else {
-			return true;
-		}
-	}
-
-	function freeResult( $res ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		if ( !@/**/mysql_free_result( $res ) ) {
-			throw new DBUnexpectedError( $this, "Unable to free MySQL result" );
-		}
-	}
-
-	function fetchObject( $res ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		@/**/$row = mysql_fetch_object( $res );
-		if( $this->lastErrno() ) {
-			throw new DBUnexpectedError( $this, 'Error in fetchObject(): ' . htmlspecialchars( $this->lastError() ) );
-		}
-		return $row;
-	}
-
- 	function fetchRow( $res ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		@/**/$row = mysql_fetch_array( $res );
-		if ( $this->lastErrno() ) {
-			throw new DBUnexpectedError( $this, 'Error in fetchRow(): ' . htmlspecialchars( $this->lastError() ) );
-		}
-		return $row;
-	}
-
-	function numRows( $res ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		@/**/$n = mysql_num_rows( $res );
-		if( $this->lastErrno() ) {
-			throw new DBUnexpectedError( $this, 'Error in numRows(): ' . htmlspecialchars( $this->lastError() ) );
-		}
-		return $n;
-	}
-
-	function numFields( $res ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		return mysql_num_fields( $res );
-	}
-
-	function fieldName( $res, $n ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		return mysql_field_name( $res, $n );
-	}
-
-	function insertId() { return mysql_insert_id( $this->mConn ); }
-
-	function dataSeek( $res, $row ) {
-		if ( $res instanceof ResultWrapper ) {
-			$res = $res->result;
-		}
-		return mysql_data_seek( $res, $row );
-	}
-
-	function lastErrno() {
-		if ( $this->mConn ) {
-			return mysql_errno( $this->mConn );
-		} else {
-			return mysql_errno();
-		}
-	}
-
-	function lastError() {
-		if ( $this->mConn ) {
-			# Even if it's non-zero, it can still be invalid
-			wfSuppressWarnings();
-			$error = mysql_error( $this->mConn );
-			if ( !$error ) {
-				$error = mysql_error();
-			}
-			wfRestoreWarnings();
-		} else {
-			$error = mysql_error();
-		}
-		if( $error ) {
-			$error .= ' (' . $this->mServer . ')';
-		}
-		return $error;
-	}
-
-	function affectedRows() { return mysql_affected_rows( $this->mConn ); }
-
-	/**
-	 * Estimate rows in dataset
-	 * Returns estimated count, based on EXPLAIN output
-	 * Takes same arguments as Database::select()
-	 */
-	public function estimateRowCount( $table, $vars='*', $conds='', $fname = 'DatabaseMysql::estimateRowCount', $options = array() ) {
-		$options['EXPLAIN'] = true;
-		$res = $this->select( $table, $vars, $conds, $fname, $options );
-		if ( $res === false ) {
-			return false;
-		}
-		if ( !$this->numRows( $res ) ) {
-			return 0;
-		}
-
-		$rows = 1;
-		foreach ( $res as $plan ) {
-			$rows *= $plan->rows > 0 ? $plan->rows : 1; // avoid resetting to zero
-		}
-		return $rows;
-	}
-
-	function fieldInfo( $table, $field ) {
-		$table = $this->tableName( $table );
-		$res = $this->query( "SELECT * FROM $table LIMIT 1", __METHOD__, true );
-		if ( !$res ) {
-			return false;
-		}
-		$n = mysql_num_fields( $res->result );
-		for( $i = 0; $i < $n; $i++ ) {
-			$meta = mysql_fetch_field( $res->result, $i );
-			if( $field == $meta->name ) {
-				return new MySQLField($meta);
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Get information about an index into an object
-	 * Returns false if the index does not exist
-	 */
-	function indexInfo( $table, $index, $fname = 'DatabaseMysql::indexInfo' ) {
-		# SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
-		# SHOW INDEX should work for 3.x and up:
-		# http://dev.mysql.com/doc/mysql/en/SHOW_INDEX.html
-		$table = $this->tableName( $table );
-		$index = $this->indexName( $index );
-		$sql = 'SHOW INDEX FROM ' . $table;
-		$res = $this->query( $sql, $fname );
-
-		if ( !$res ) {
-			return null;
-		}
-
-		$result = array();
-
-		foreach ( $res as $row ) {
-			if ( $row->Key_name == $index ) {
-				$result[] = $row;
-			}
-		}
-
-		return empty( $result ) ? false : $result;
-	}
-
-	function selectDB( $db ) {
-		$this->mDBname = $db;
-		return mysql_select_db( $db, $this->mConn );
-	}
-
-	function strencode( $s ) {
-		$sQuoted = mysql_real_escape_string( $s, $this->mConn );
-
-		if($sQuoted === false) {
-			$this->ping();
-			$sQuoted = mysql_real_escape_string( $s, $this->mConn );
-		}
-		return $sQuoted;
-	}
-
-	/**
-	 * MySQL uses `backticks` for identifier quoting instead of the sql standard "double quotes".
-	 */
-	public function addIdentifierQuotes( $s ) {
-		return "`" . $this->strencode( $s ) . "`";
-	}
-
-	function ping() {
-		$ping = mysql_ping( $this->mConn );
-		if ( $ping ) {
-			return true;
-		}
-
-		mysql_close( $this->mConn );
-		$this->mOpened = false;
-		$this->mConn = false;
-		$this->open( $this->mServer, $this->mUser, $this->mPassword, $this->mDBname );
-		return true;
-	}
-
-	/**
-	 * Returns slave lag.
-	 * At the moment, this will only work if the DB user has the PROCESS privilege
-	 * @result int
-	 */
-	function getLag() {
-		if ( !is_null( $this->mFakeSlaveLag ) ) {
-			wfDebug( "getLag: fake slave lagged {$this->mFakeSlaveLag} seconds\n" );
-			return $this->mFakeSlaveLag;
-		}
-		$res = $this->query( 'SHOW PROCESSLIST', __METHOD__ );
-		if( !$res ) {
-			return false;
-		}
-		# Find slave SQL thread
-		foreach( $res as $row ) {
-			/* This should work for most situations - when default db
-			 * for thread is not specified, it had no events executed,
-			 * and therefore it doesn't know yet how lagged it is.
-			 *
-			 * Relay log I/O thread does not select databases.
-			 */
-			if ( $row->User == 'system user' &&
-				$row->State != 'Waiting for master to send event' &&
-				$row->State != 'Connecting to master' &&
-				$row->State != 'Queueing master event to the relay log' &&
-				$row->State != 'Waiting for master update' &&
-				$row->State != 'Requesting binlog dump' &&
-				$row->State != 'Waiting to reconnect after a failed master event read' &&
-				$row->State != 'Reconnecting after a failed master event read' &&
-				$row->State != 'Registering slave on master'
-				) {
-				# This is it, return the time (except -ve)
-				if ( $row->Time > 0x7fffffff ) {
-					return false;
-				} else {
-					return $row->Time;
-				}
-			}
-		}
-		return false;
-	}
-
-	function getServerVersion() {
-		return mysql_get_server_info( $this->mConn );
-	}
-
-	function useIndexClause( $index ) {
-		return "FORCE INDEX (" . $this->indexName( $index ) . ")";
-	}
-
-	function lowPriorityOption() {
-		return 'LOW_PRIORITY';
-	}
-
-	public static function getSoftwareLink() {
-		return '[http://www.mysql.com/ MySQL]';
-	}
-
-	function standardSelectDistinct() {
-		return false;
-	}
-
-	public function setTimeout( $timeout ) {
-		$this->query( "SET net_read_timeout=$timeout" );
-		$this->query( "SET net_write_timeout=$timeout" );
-	}
-
-	public function lock( $lockName, $method, $timeout = 5 ) {
-		$lockName = $this->addQuotes( $lockName );
-		$result = $this->query( "SELECT GET_LOCK($lockName, $timeout) AS lockstatus", $method );
-		$row = $this->fetchObject( $result );
-
-		if( $row->lockstatus == 1 ) {
-			return true;
-		} else {
-			wfDebug( __METHOD__." failed to acquire lock\n" );
-			return false;
-		}
-	}
-
-	/**
-	 * FROM MYSQL DOCS: http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_release-lock
-	 */
-	public function unlock( $lockName, $method ) {
-		$lockName = $this->addQuotes( $lockName );
-		$result = $this->query( "SELECT RELEASE_LOCK($lockName) as lockstatus", $method );
-		$row = $this->fetchObject( $result );
-		return $row->lockstatus;
-	}
-
-	public function lockTables( $read, $write, $method, $lowPriority = true ) {
-		$items = array();
-
-		foreach( $write as $table ) {
-			$tbl = $this->tableName( $table ) .
-					( $lowPriority ? ' LOW_PRIORITY' : '' ) .
-					' WRITE';
-			$items[] = $tbl;
-		}
-		foreach( $read as $table ) {
-			$items[] = $this->tableName( $table ) . ' READ';
-		}
-		$sql = "LOCK TABLES " . implode( ',', $items );
-		$this->query( $sql, $method );
-	}
-
-	public function unlockTables( $method ) {
-		$this->query( "UNLOCK TABLES", $method );
-	}
-
-	/**
-	 * Get search engine class. All subclasses of this
-	 * need to implement this if they wish to use searching.
-	 *
-	 * @return String
-	 */
-	public function getSearchEngine() {
-		return 'SearchMySQL';
-	}
-
-	public function setBigSelects( $value = true ) {
-		if ( $value === 'default' ) {
-			if ( $this->mDefaultBigSelects === null ) {
-				# Function hasn't been called before so it must already be set to the default
-				return;
-			} else {
-				$value = $this->mDefaultBigSelects;
-			}
-		} elseif ( $this->mDefaultBigSelects === null ) {
-			$this->mDefaultBigSelects = (bool)$this->selectField( false, '@@sql_big_selects' );
-		}
-		$encValue = $value ? '1' : '0';
-		$this->query( "SET sql_big_selects=$encValue", __METHOD__ );
-	}
-
-	public function unixTimestamp( $field ) {
-		return "UNIX_TIMESTAMP($field)";
-	}
-
-	/**
-	 * Determines if the last failure was due to a deadlock
-	 */
-	function wasDeadlock() {
-		return $this->lastErrno() == 1213;
-	}
-
-	/**
-	 * Determines if the last query error was something that should be dealt
-	 * with by pinging the connection and reissuing the query
-	 */
-	function wasErrorReissuable() {
-		return $this->lastErrno() == 2013 || $this->lastErrno() == 2006;
-	}
-
-	/**
-	 * Determines if the last failure was due to the database being read-only.
-	 */
-	function wasReadOnlyError() {
-		return $this->lastErrno() == 1223 ||
-			( $this->lastErrno() == 1290 && strpos( $this->lastError(), '--read-only' ) !== false );
-	}
-
-	function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = 'DatabaseMysql::duplicateTableStructure' ) {
-		$tmp = $temporary ? 'TEMPORARY ' : '';
-		if ( strcmp( $this->getServerVersion(), '4.1' ) < 0 ) {
-			# Hack for MySQL versions < 4.1, which don't support
-			# "CREATE TABLE ... LIKE". Note that
-			# "CREATE TEMPORARY TABLE ... SELECT * FROM ... LIMIT 0"
-			# would not create the indexes we need....
-			#
-			# Note that we don't bother changing around the prefixes here be-
-			# cause we know we're using MySQL anyway.
-
-			$res = $this->query( "SHOW CREATE TABLE $oldName" );
-			$row = $this->fetchRow( $res );
-			$oldQuery = $row[1];
-			$query = preg_replace( '/CREATE TABLE `(.*?)`/',
-				"CREATE $tmp TABLE `$newName`", $oldQuery );
-			if ($oldQuery === $query) {
-				# Couldn't do replacement
-				throw new MWException( "could not create temporary table $newName" );
-			}
-		} else {
-			$query = "CREATE $tmp TABLE $newName (LIKE $oldName)";
-		}
-		$this->query( $query, $fname );
-	}
-
-	protected function getDefaultSchemaVars() {
-		$vars = parent::getDefaultSchemaVars();
-		$vars['wgDBTableOptions'] = $GLOBALS['wgDBTableOptions'];
-		return $vars;
-	}
-}
-
-/**
- * Legacy support: Database == DatabaseMysql
- */
-class Database extends DatabaseMysql {}
-
-/**
- * Utility class.
- * @ingroup Database
- */
-class MySQLField implements Field {
-	private $name, $tablename, $default, $max_length, $nullable,
-		$is_pk, $is_unique, $is_multiple, $is_key, $type;
-
-	function __construct ( $info ) {
-		$this->name = $info->name;
-		$this->tablename = $info->table;
-		$this->default = $info->def;
-		$this->max_length = $info->max_length;
-		$this->nullable = !$info->not_null;
-		$this->is_pk = $info->primary_key;
-		$this->is_unique = $info->unique_key;
-		$this->is_multiple = $info->multiple_key;
-		$this->is_key = ( $this->is_pk || $this->is_unique || $this->is_multiple );
-		$this->type = $info->type;
-	}
-
-	function name() {
-		return $this->name;
-	}
-
-	function tableName() {
-		return $this->tableName;
-	}
-
-	function type() {
-		return $this->type;
-	}
-
-	function isNullable() {
-		return $this->nullable;
-	}
-
-	function defaultValue() {
-		return $this->default;
-	}
-
-	function isKey() {
-		return $this->is_key;
-	}
-
-	function isMultipleKey() {
-		return $this->is_multiple;
-	}
-}
-
-class MySQLMasterPos {
-	var $file, $pos;
-
-	function __construct( $file, $pos ) {
-		$this->file = $file;
-		$this->pos = $pos;
-	}
-
-	function __toString() {
-		return "{$this->file}/{$this->pos}";
-	}
-}