mirror of
https://github.com/woodpecker-ci/woodpecker.git
synced 2024-12-18 06:26:30 +00:00
109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
|
|
//
|
|
// The driver should be used via the database/sql package:
|
|
//
|
|
// import "database/sql"
|
|
// import _ "github.com/go-sql-driver/mysql"
|
|
//
|
|
// db, err := sql.Open("mysql", "user:password@/dbname")
|
|
//
|
|
// See https://github.com/go-sql-driver/mysql#usage for details
|
|
package mysql
|
|
|
|
import (
|
|
"database/sql"
|
|
"database/sql/driver"
|
|
"net"
|
|
)
|
|
|
|
// This struct is exported to make the driver directly accessible.
|
|
// In general the driver is used via the database/sql package.
|
|
type MySQLDriver struct{}
|
|
|
|
// Open new Connection.
|
|
// See https://github.com/go-sql-driver/mysql#dsn-data-source-name for how
|
|
// the DSN string is formated
|
|
func (d *MySQLDriver) Open(dsn string) (driver.Conn, error) {
|
|
var err error
|
|
|
|
// New mysqlConn
|
|
mc := &mysqlConn{
|
|
maxPacketAllowed: maxPacketSize,
|
|
maxWriteSize: maxPacketSize - 1,
|
|
}
|
|
mc.cfg, err = parseDSN(dsn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Connect to Server
|
|
nd := net.Dialer{Timeout: mc.cfg.timeout}
|
|
mc.netConn, err = nd.Dial(mc.cfg.net, mc.cfg.addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
mc.buf = newBuffer(mc.netConn)
|
|
|
|
// Reading Handshake Initialization Packet
|
|
cipher, err := mc.readInitPacket()
|
|
if err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
|
|
// Send Client Authentication Packet
|
|
if err = mc.writeAuthPacket(cipher); err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
|
|
// Read Result Packet
|
|
err = mc.readResultOK()
|
|
if err != nil {
|
|
// Retry with old authentication method, if allowed
|
|
if mc.cfg.allowOldPasswords && err == errOldPassword {
|
|
if err = mc.writeOldAuthPacket(cipher); err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
if err = mc.readResultOK(); err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
} else {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
|
|
}
|
|
|
|
// Get max allowed packet size
|
|
maxap, err := mc.getSystemVar("max_allowed_packet")
|
|
if err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
mc.maxPacketAllowed = stringToInt(maxap) - 1
|
|
if mc.maxPacketAllowed < maxPacketSize {
|
|
mc.maxWriteSize = mc.maxPacketAllowed
|
|
}
|
|
|
|
// Handle DSN Params
|
|
err = mc.handleParams()
|
|
if err != nil {
|
|
mc.Close()
|
|
return nil, err
|
|
}
|
|
|
|
return mc, nil
|
|
}
|
|
|
|
func init() {
|
|
sql.Register("mysql", &MySQLDriver{})
|
|
}
|