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/*
* Copyright 2020 The NATS Authors
* 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 (
"encoding/json"
"fmt"
)
type v1User struct {
Permissions
Limits
BearerToken bool `json:"bearer_token,omitempty"`
// Limit values deprecated inv v2
Max int64 `json:"max,omitempty"`
}
type v1UserClaimsDataDeletedFields struct {
v1ClaimsDataDeletedFields
IssuerAccount string `json:"issuer_account,omitempty"`
}
type v1UserClaims struct {
ClaimsData
v1UserClaimsDataDeletedFields
v1User `json:"nats,omitempty"`
}
func loadUser(data []byte, version int) (*UserClaims, error) {
switch version {
case 1:
var v1a v1UserClaims
v1a.Limits = Limits{NatsLimits: NatsLimits{NoLimit, NoLimit, NoLimit}}
v1a.Max = NoLimit
if err := json.Unmarshal(data, &v1a); err != nil {
return nil, err
}
return v1a.Migrate()
case 2:
var v2a UserClaims
if err := json.Unmarshal(data, &v2a); err != nil {
return nil, err
}
return &v2a, nil
default:
return nil, fmt.Errorf("library supports version %d or less - received %d", libVersion, version)
}
}
func (oa v1UserClaims) Migrate() (*UserClaims, error) {
return oa.migrateV1()
}
func (oa v1UserClaims) migrateV1() (*UserClaims, error) {
var u UserClaims
// copy the base claim
u.ClaimsData = oa.ClaimsData
// move the moved fields
u.User.Type = oa.v1ClaimsDataDeletedFields.Type
u.User.Tags = oa.v1ClaimsDataDeletedFields.Tags
u.User.IssuerAccount = oa.IssuerAccount
// copy the user data
u.User.Permissions = oa.v1User.Permissions
u.User.Limits = oa.v1User.Limits
u.User.BearerToken = oa.v1User.BearerToken
u.Version = 1
return &u, nil
}
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