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dex/vendor/gopkg.in/square/go-jose.v2/jwt/builder.go

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2016-07-25 20:00:28 +00:00
/*-
* 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 "gopkg.in/square/go-jose.v2"
// Builder is a utility for making JSON Web Tokens. Calls can be chained, and
// errors are accumulated until the final call to CompactSerialize/FullSerialize.
type Builder struct {
transform func([]byte) (serializer, payload, error)
payload payload
serializer serializer
err error
}
type payload func(interface{}) ([]byte, error)
type serializer interface {
FullSerialize() string
CompactSerialize() (string, error)
}
// Signed creates builder for signed tokens.
func Signed(sig jose.Signer) *Builder {
return &Builder{
transform: func(b []byte) (serializer, payload, error) {
s, err := sig.Sign(b)
if err != nil {
return nil, nil, err
}
return s, s.Verify, nil
},
}
}
// Encrypted creates builder for encrypted tokens.
func Encrypted(enc jose.Encrypter) *Builder {
return &Builder{
transform: func(b []byte) (serializer, payload, error) {
e, err := enc.Encrypt(b)
if err != nil {
return nil, nil, err
}
return e, e.Decrypt, nil
},
}
}
// Claims encodes claims into the builder.
func (b *Builder) Claims(c interface{}) *Builder {
if b.transform == nil {
panic("Signer/Encrypter not set")
}
if b.payload != nil {
panic("Claims already set")
}
raw, err := marshalClaims(c)
if err != nil {
return &Builder{
err: err,
}
}
ser, pl, err := b.transform(raw)
return &Builder{
transform: b.transform,
serializer: ser,
payload: pl,
err: err,
}
}
// Token builds a JSONWebToken from provided data.
func (b *Builder) Token() (*JSONWebToken, error) {
if b.err != nil {
return nil, b.err
}
if b.payload == nil {
return nil, ErrInvalidClaims
}
return &JSONWebToken{b.payload}, nil
}
// FullSerialize serializes a token using the full serialization format.
func (b *Builder) FullSerialize() (string, error) {
if b.err != nil {
return "", b.err
}
if b.serializer == nil {
return "", ErrInvalidClaims
}
return b.serializer.FullSerialize(), nil
}
// CompactSerialize serializes a token using the compact serialization format.
func (b *Builder) CompactSerialize() (string, error) {
if b.err != nil {
return "", b.err
}
if b.serializer == nil {
return "", ErrInvalidClaims
}
return b.serializer.CompactSerialize()
}