/usr/share/gocode/src/github.com/go-sql-driver/mysql/driver.go is in golang-github-go-sql-driver-mysql-dev 1.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | // 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{}
// DialFunc is a function which can be used to establish the network connection.
// Custom dial functions must be registered with RegisterDial
type DialFunc func(addr string) (net.Conn, error)
var dials map[string]DialFunc
// RegisterDial registers a custom dial function. It can then be used by the
// network address mynet(addr), where mynet is the registered new network.
// addr is passed as a parameter to the dial function.
func RegisterDial(net string, dial DialFunc) {
if dials == nil {
dials = make(map[string]DialFunc)
}
dials[net] = dial
}
// 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
if dial, ok := dials[mc.cfg.net]; ok {
mc.netConn, err = dial(mc.cfg.addr)
} else {
nd := net.Dialer{Timeout: mc.cfg.timeout}
mc.netConn, err = nd.Dial(mc.cfg.net, mc.cfg.addr)
}
if err != nil {
return nil, err
}
// Enable TCP Keepalives on TCP connections
if tc, ok := mc.netConn.(*net.TCPConn); ok {
if err := tc.SetKeepAlive(true); err != nil {
mc.Close()
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 != nil && 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{})
}
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