Add pgproto3.Backend

password_message.go

@@ -0,0 +1,44 @@
+package pgproto3
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+type PasswordMessage struct {
+	Password string
+}
+
+func (*PasswordMessage) Frontend() {}
+
+func (dst *PasswordMessage) Decode(src []byte) error {
+	buf := bytes.NewBuffer(src)
+
+	b, err := buf.ReadBytes(0)
+	if err != nil {
+		return err
+	}
+	dst.Password = string(b[:len(b)-1])
+
+	return nil
+}
+
+func (src *PasswordMessage) MarshalBinary() ([]byte, error) {
+	var bigEndian BigEndianBuf
+	buf := &bytes.Buffer{}
+	buf.WriteByte('p')
+	buf.Write(bigEndian.Uint32(uint32(4 + len(src.Password) + 1)))
+	buf.WriteString(src.Password)
+	buf.WriteByte(0)
+	return buf.Bytes(), nil
+}
+
+func (src *PasswordMessage) MarshalJSON() ([]byte, error) {
+	return json.Marshal(struct {
+		Type     string
+		Password string
+	}{
+		Type:     "PasswordMessage",
+		Password: src.Password,
+	})
+}