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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pkix
import (
"encoding/json"
"fmt"
"strconv"
"strings"
"github.com/zmap/zcrypto/encoding/asn1"
)
// AuxOID behaves similar to asn1.ObjectIdentifier, except encodes to JSON as a
// string in dot notation. It is a type synonym for []int, and can be converted
// to an asn1.ObjectIdentifier by going through []int and back.
type AuxOID []int
// AsSlice returns a slice over the inner-representation
func (aux *AuxOID) AsSlice() []int {
return *aux
}
// CopyAsSlice returns a copy of the inter-representation as a slice
func (aux *AuxOID) CopyAsSlice() []int {
out := make([]int, len(*aux))
copy(out, *aux)
return out
}
// Equal tests (deep) equality of two AuxOIDs
func (aux *AuxOID) Equal(other *AuxOID) bool {
var a []int = *aux
var b []int = *other
if len(a) != len(b) {
return false
}
for idx := range a {
if a[idx] != b[idx] {
return false
}
}
return true
}
// MarshalJSON implements the json.Marshaler interface
func (aux *AuxOID) MarshalJSON() ([]byte, error) {
var oid asn1.ObjectIdentifier
oid = []int(*aux)
return json.Marshal(oid.String())
}
// UnmarshalJSON implements the json.Unmarshaler interface
func (aux *AuxOID) UnmarshalJSON(b []byte) error {
var s string
if err := json.Unmarshal(b, &s); err != nil {
return err
}
parts := strings.Split(s, ".")
if len(parts) < 1 {
return fmt.Errorf("Invalid OID string %s", s)
}
slice := make([]int, len(parts))
for idx := range parts {
n, err := strconv.Atoi(parts[idx])
if err != nil || n < 0 {
return fmt.Errorf("Invalid OID integer %s", parts[idx])
}
slice[idx] = n
}
*aux = slice
return nil
}
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