mirror of https://github.com/jackc/pgx.git
77 lines
1.9 KiB
Go
77 lines
1.9 KiB
Go
package pgproto3
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"encoding/json"
|
|
"errors"
|
|
|
|
"github.com/jackc/pgx/v5/internal/pgio"
|
|
)
|
|
|
|
// AuthenticationMD5Password is a message sent from the backend indicating that an MD5 hashed password is required.
|
|
type AuthenticationMD5Password struct {
|
|
Salt [4]byte
|
|
}
|
|
|
|
// Backend identifies this message as sendable by the PostgreSQL backend.
|
|
func (*AuthenticationMD5Password) Backend() {}
|
|
|
|
// Backend identifies this message as an authentication response.
|
|
func (*AuthenticationMD5Password) AuthenticationResponse() {}
|
|
|
|
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
|
|
// type identifier and 4 byte message length.
|
|
func (dst *AuthenticationMD5Password) Decode(src []byte) error {
|
|
if len(src) != 8 {
|
|
return errors.New("bad authentication message size")
|
|
}
|
|
|
|
authType := binary.BigEndian.Uint32(src)
|
|
|
|
if authType != AuthTypeMD5Password {
|
|
return errors.New("bad auth type")
|
|
}
|
|
|
|
copy(dst.Salt[:], src[4:8])
|
|
|
|
return nil
|
|
}
|
|
|
|
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
|
|
func (src *AuthenticationMD5Password) Encode(dst []byte) ([]byte, error) {
|
|
dst, sp := beginMessage(dst, 'R')
|
|
dst = pgio.AppendUint32(dst, AuthTypeMD5Password)
|
|
dst = append(dst, src.Salt[:]...)
|
|
return finishMessage(dst, sp)
|
|
}
|
|
|
|
// MarshalJSON implements encoding/json.Marshaler.
|
|
func (src AuthenticationMD5Password) MarshalJSON() ([]byte, error) {
|
|
return json.Marshal(struct {
|
|
Type string
|
|
Salt [4]byte
|
|
}{
|
|
Type: "AuthenticationMD5Password",
|
|
Salt: src.Salt,
|
|
})
|
|
}
|
|
|
|
// UnmarshalJSON implements encoding/json.Unmarshaler.
|
|
func (dst *AuthenticationMD5Password) UnmarshalJSON(data []byte) error {
|
|
// Ignore null, like in the main JSON package.
|
|
if string(data) == "null" {
|
|
return nil
|
|
}
|
|
|
|
var msg struct {
|
|
Type string
|
|
Salt [4]byte
|
|
}
|
|
if err := json.Unmarshal(data, &msg); err != nil {
|
|
return err
|
|
}
|
|
|
|
dst.Salt = msg.Salt
|
|
return nil
|
|
}
|