122 lines
3.2 KiB
Go
122 lines
3.2 KiB
Go
|
/*-
|
||
|
|
* Copyright 2016 Zbigniew Mandziejewicz
|
||
|
|
* Copyright 2016 Square, Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package jwt
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strconv"
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"gopkg.in/square/go-jose.v2/json"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Claims represents public claim values (as specified in RFC 7519).
|
||
|
|
type Claims struct {
|
||
|
|
Issuer string `json:"iss,omitempty"`
|
||
|
|
Subject string `json:"sub,omitempty"`
|
||
|
|
Audience Audience `json:"aud,omitempty"`
|
||
|
|
Expiry *NumericDate `json:"exp,omitempty"`
|
||
|
|
NotBefore *NumericDate `json:"nbf,omitempty"`
|
||
|
|
IssuedAt *NumericDate `json:"iat,omitempty"`
|
||
|
|
ID string `json:"jti,omitempty"`
|
||
|
|
}
|
||
|
|
|
||
|
|
// NumericDate represents date and time as the number of seconds since the
|
||
|
|
// epoch, ignoring leap seconds. Non-integer values can be represented
|
||
|
|
// in the serialized format, but we round to the nearest second.
|
||
|
|
// See RFC7519 Section 2: https://tools.ietf.org/html/rfc7519#section-2
|
||
|
|
type NumericDate int64
|
||
|
|
|
||
|
|
// NewNumericDate constructs NumericDate from time.Time value.
|
||
|
|
func NewNumericDate(t time.Time) *NumericDate {
|
||
|
|
if t.IsZero() {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// While RFC 7519 technically states that NumericDate values may be
|
||
|
|
// non-integer values, we don't bother serializing timestamps in
|
||
|
|
// claims with sub-second accurancy and just round to the nearest
|
||
|
|
// second instead. Not convined sub-second accuracy is useful here.
|
||
|
|
out := NumericDate(t.Unix())
|
||
|
|
return &out
|
||
|
|
}
|
||
|
|
|
||
|
|
// MarshalJSON serializes the given NumericDate into its JSON representation.
|
||
|
|
func (n NumericDate) MarshalJSON() ([]byte, error) {
|
||
|
|
return []byte(strconv.FormatInt(int64(n), 10)), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// UnmarshalJSON reads a date from its JSON representation.
|
||
|
|
func (n *NumericDate) UnmarshalJSON(b []byte) error {
|
||
|
|
s := string(b)
|
||
|
|
|
||
|
|
f, err := strconv.ParseFloat(s, 64)
|
||
|
|
if err != nil {
|
||
|
|
return ErrUnmarshalNumericDate
|
||
|
|
}
|
||
|
|
|
||
|
|
*n = NumericDate(f)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Time returns time.Time representation of NumericDate.
|
||
|
|
func (n *NumericDate) Time() time.Time {
|
||
|
|
if n == nil {
|
||
|
|
return time.Time{}
|
||
|
|
}
|
||
|
|
return time.Unix(int64(*n), 0)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Audience represents the recipients that the token is intended for.
|
||
|
|
type Audience []string
|
||
|
|
|
||
|
|
// UnmarshalJSON reads an audience from its JSON representation.
|
||
|
|
func (s *Audience) UnmarshalJSON(b []byte) error {
|
||
|
|
var v interface{}
|
||
|
|
if err := json.Unmarshal(b, &v); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
switch v := v.(type) {
|
||
|
|
case string:
|
||
|
|
*s = []string{v}
|
||
|
|
case []interface{}:
|
||
|
|
a := make([]string, len(v))
|
||
|
|
for i, e := range v {
|
||
|
|
s, ok := e.(string)
|
||
|
|
if !ok {
|
||
|
|
return ErrUnmarshalAudience
|
||
|
|
}
|
||
|
|
a[i] = s
|
||
|
|
}
|
||
|
|
*s = a
|
||
|
|
default:
|
||
|
|
return ErrUnmarshalAudience
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s Audience) Contains(v string) bool {
|
||
|
|
for _, a := range s {
|
||
|
|
if a == v {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
}
|