| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package mysql |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "os" |
| 8 | |
| 9 | "gopkg.in/ini.v1" |
| 10 | ) |
| 11 | |
| 12 | func dsnFromFile(filename string) (string, error) { |
| 13 | f, err := ini.Load(filename) |
| 14 | if err != nil { |
| 15 | return "", err |
| 16 | } |
| 17 | |
| 18 | section, err := f.GetSection("client") |
| 19 | if err != nil { |
| 20 | return "", err |
| 21 | } |
| 22 | |
| 23 | defaultUser := getUser() |
| 24 | defaultHost := "localhost" |
| 25 | defaultPort := "3306" |
| 26 | |
| 27 | user := section.Key("user").String() |
| 28 | password := section.Key("password").String() |
| 29 | socket := section.Key("socket").String() |
| 30 | host := section.Key("host").String() |
| 31 | port := section.Key("port").String() |
| 32 | database := section.Key("database").String() |
| 33 | |
| 34 | var dsn string |
| 35 | |
| 36 | if user != "" { |
| 37 | dsn = user |
| 38 | } else { |
| 39 | dsn = defaultUser |
| 40 | } |
| 41 | |
| 42 | if password != "" { |
| 43 | dsn += ":" + password |
| 44 | } |
| 45 | |
| 46 | switch { |
| 47 | case socket != "": |
| 48 | dsn += fmt.Sprintf("@unix(%s)/", socket) |
| 49 | case host != "" && port != "": |
| 50 | dsn += fmt.Sprintf("@tcp(%s:%s)/", host, port) |
| 51 | case host != "": |
| 52 | dsn += fmt.Sprintf("@tcp(%s:%s)/", host, defaultPort) |
| 53 | case port != "": |
| 54 | dsn += fmt.Sprintf("@tcp(%s:%s)/", defaultHost, port) |
| 55 | default: |
| 56 | dsn += "@/" |
| 57 | } |
| 58 | |
| 59 | if database != "" { |
| 60 | dsn += database |
| 61 | } |
| 62 | return dsn, nil |
| 63 | } |
| 64 | |
| 65 | func getUser() (user string) { |
| 66 | if user = os.Getenv("LOGNAME"); user != "" { |
| 67 | return user |
| 68 | } |
| 69 | if user = os.Getenv("USER"); user != "" { |
| 70 | return user |
| 71 | } |
| 72 | if user = os.Getenv("LNAME"); user != "" { |
| 73 | return user |
| 74 | } |
| 75 | if user = os.Getenv("USERNAME"); user != "" { |
| 76 | return user |
| 77 | } |
| 78 | return "" |
| 79 | } |