Files
mesh-controller/vendor/github.com/nats-io/jwt/v2/header.go
T
jochen be92762969 Give every test a bus of its own, at the release the mesh runs (hq ADR 0237)
The live tests reached one shared bus and assert, read and remove the mesh's own objects by
their fixed names, so packages run in parallel deleted what each other read and the suite
passed only one package at a time; a red suite read as noise. internal/testbus starts a server
per test, linked in at the nats-server release go.mod pins, and a test holds that pin to the
catalogue's bus image and to the facts snapshot's bus when there is one, so the tests never run
a bus the mesh does not. The waiter test read a timing (the most connections held at one look)
and now reads the state it means (the fewest held across the wait). make check runs the packages
in parallel under the race detector, with a timeout.
2026-10-06 21:17:02 +02:00

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2.1 KiB
Go

/*
* Copyright 2018-2019 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"
"strings"
)
const (
// Version is semantic version.
Version = "2.4.0"
// TokenTypeJwt is the JWT token type supported JWT tokens
// encoded and decoded by this library
// from RFC7519 5.1 "typ":
// it is RECOMMENDED that "JWT" always be spelled using uppercase characters for compatibility
TokenTypeJwt = "JWT"
// AlgorithmNkey is the algorithm supported by JWT tokens
// encoded and decoded by this library
AlgorithmNkeyOld = "ed25519"
AlgorithmNkey = AlgorithmNkeyOld + "-nkey"
)
// Header is a JWT Jose Header
type Header struct {
Type string `json:"typ"`
Algorithm string `json:"alg"`
}
// Parses a header JWT token
func parseHeaders(s string) (*Header, error) {
h, err := decodeString(s)
if err != nil {
return nil, err
}
header := Header{}
if err := json.Unmarshal(h, &header); err != nil {
return nil, err
}
if err := header.Valid(); err != nil {
return nil, err
}
return &header, nil
}
// Valid validates the Header. It returns nil if the Header is
// a JWT header, and the algorithm used is the NKEY algorithm.
func (h *Header) Valid() error {
if TokenTypeJwt != strings.ToUpper(h.Type) {
return fmt.Errorf("not supported type %q", h.Type)
}
alg := strings.ToLower(h.Algorithm)
if !strings.HasPrefix(alg, AlgorithmNkeyOld) {
return fmt.Errorf("unexpected %q algorithm", h.Algorithm)
}
if AlgorithmNkeyOld != alg && AlgorithmNkey != alg {
return fmt.Errorf("unexpected %q algorithm", h.Algorithm)
}
return nil
}