-
Notifications
You must be signed in to change notification settings - Fork 2
/
authentication.go
54 lines (41 loc) · 991 Bytes
/
authentication.go
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
package pgproto3
import (
"encoding/binary"
"github.com/pkg/errors"
"github.com/ronaldslc/pgx/pgio"
)
const (
AuthTypeOk = 0
AuthTypeCleartextPassword = 3
AuthTypeMD5Password = 5
)
type Authentication struct {
Type uint32
// MD5Password fields
Salt [4]byte
}
func (*Authentication) Backend() {}
func (dst *Authentication) Decode(src []byte) error {
*dst = Authentication{Type: binary.BigEndian.Uint32(src[:4])}
switch dst.Type {
case AuthTypeOk:
case AuthTypeCleartextPassword:
case AuthTypeMD5Password:
copy(dst.Salt[:], src[4:8])
default:
return errors.Errorf("unknown authentication type: %d", dst.Type)
}
return nil
}
func (src *Authentication) Encode(dst []byte) []byte {
dst = append(dst, 'R')
sp := len(dst)
dst = pgio.AppendInt32(dst, -1)
dst = pgio.AppendUint32(dst, src.Type)
switch src.Type {
case AuthTypeMD5Password:
dst = append(dst, src.Salt[:]...)
}
pgio.SetInt32(dst[sp:], int32(len(dst[sp:])))
return dst
}