|
| 1 | +package settings |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "fmt" |
| 6 | + "os" |
| 7 | + |
| 8 | + "github.com/qdm12/gosettings" |
| 9 | + "github.com/qdm12/gosettings/reader" |
| 10 | + "github.com/qdm12/gosettings/validate" |
| 11 | + "github.com/qdm12/gotree" |
| 12 | +) |
| 13 | + |
| 14 | +// Socks5 contains settings to configure the Socks5 proxy server. |
| 15 | +type Socks5 struct { |
| 16 | + Enabled *bool |
| 17 | + ListeningAddress string |
| 18 | + Username *string |
| 19 | + Password *string |
| 20 | +} |
| 21 | + |
| 22 | +func (s Socks5) validate() (err error) { |
| 23 | + err = validate.ListeningAddress(s.ListeningAddress, os.Getuid()) |
| 24 | + if err != nil { |
| 25 | + return fmt.Errorf("server listening address is not valid: %w", err) |
| 26 | + } |
| 27 | + |
| 28 | + switch { |
| 29 | + case *s.Username != "" && *s.Password == "": |
| 30 | + return errors.New("password must be set if username is set") |
| 31 | + case *s.Username == "" && *s.Password != "": |
| 32 | + return errors.New("username must be set if password is set") |
| 33 | + } |
| 34 | + |
| 35 | + return nil |
| 36 | +} |
| 37 | + |
| 38 | +func (s *Socks5) copy() (copied Socks5) { |
| 39 | + return Socks5{ |
| 40 | + Enabled: gosettings.CopyPointer(s.Enabled), |
| 41 | + ListeningAddress: s.ListeningAddress, |
| 42 | + Username: gosettings.CopyPointer(s.Username), |
| 43 | + Password: gosettings.CopyPointer(s.Password), |
| 44 | + } |
| 45 | +} |
| 46 | + |
| 47 | +func (s *Socks5) overrideWith(other Socks5) { |
| 48 | + s.Enabled = gosettings.OverrideWithPointer(s.Enabled, other.Enabled) |
| 49 | + s.ListeningAddress = gosettings.OverrideWithComparable(s.ListeningAddress, other.ListeningAddress) |
| 50 | + s.Username = gosettings.OverrideWithPointer(s.Username, other.Username) |
| 51 | + s.Password = gosettings.OverrideWithPointer(s.Password, other.Password) |
| 52 | +} |
| 53 | + |
| 54 | +func (s *Socks5) setDefaults() { |
| 55 | + s.Enabled = gosettings.DefaultPointer(s.Enabled, false) |
| 56 | + s.ListeningAddress = gosettings.DefaultComparable(s.ListeningAddress, ":1080") |
| 57 | + s.Username = gosettings.DefaultPointer(s.Username, "") |
| 58 | + s.Password = gosettings.DefaultPointer(s.Password, "") |
| 59 | +} |
| 60 | + |
| 61 | +func (s Socks5) String() string { |
| 62 | + return s.toLinesNode().String() |
| 63 | +} |
| 64 | + |
| 65 | +func (s Socks5) toLinesNode() (node *gotree.Node) { |
| 66 | + node = gotree.New("SOCKS5 proxy server settings:") |
| 67 | + node.Appendf("Enabled: %s", gosettings.BoolToYesNo(s.Enabled)) |
| 68 | + if !*s.Enabled { |
| 69 | + return node |
| 70 | + } |
| 71 | + |
| 72 | + node.Appendf("Listening address: %s", s.ListeningAddress) |
| 73 | + if *s.Username != "" || *s.Password != "" { |
| 74 | + node.Appendf("Username: %s", *s.Username) |
| 75 | + node.Appendf("Password: %s", gosettings.ObfuscateKey(*s.Password)) |
| 76 | + } |
| 77 | + return node |
| 78 | +} |
| 79 | + |
| 80 | +func (s *Socks5) read(r *reader.Reader) (err error) { |
| 81 | + s.Enabled, err = r.BoolPtr("SOCKS5_ENABLED") |
| 82 | + if err != nil { |
| 83 | + return err |
| 84 | + } |
| 85 | + |
| 86 | + s.ListeningAddress = r.String("SOCKS5_LISTENING_ADDRESS") |
| 87 | + s.Username = r.Get("SOCKS5_USER", reader.ForceLowercase(false)) |
| 88 | + s.Password = r.Get("SOCKS5_PASSWORD", reader.ForceLowercase(false)) |
| 89 | + |
| 90 | + return nil |
| 91 | +} |
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