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package jwt
import (
"errors"
"github.com/nats-io/nkeys"
)
// Server defines the custom part of a server jwt
type Server struct {
Permissions
Cluster string `json:"cluster,omitempty"`
}
// Validate checks the cluster and permissions for a server JWT
func (s *Server) Validate(vr *ValidationResults) {
if s.Cluster == "" {
vr.AddError("servers can't contain an empty cluster")
}
}
// ServerClaims defines the data in a server JWT
type ServerClaims struct {
ClaimsData
Server `json:"nats,omitempty"`
}
// NewServerClaims creates a new server JWT with the specified subject/public key
func NewServerClaims(subject string) *ServerClaims {
if subject == "" {
return nil
}
c := &ServerClaims{}
c.Subject = subject
return c
}
// Encode tries to turn the server claims into a JWT string
func (s *ServerClaims) Encode(pair nkeys.KeyPair) (string, error) {
if !nkeys.IsValidPublicServerKey([]byte(s.Subject)) {
return "", errors.New("expected subject to be a server public key")
}
s.ClaimsData.Type = ServerClaim
return s.ClaimsData.encode(pair, s)
}
// DecodeServerClaims tries to parse server claims from a JWT string
func DecodeServerClaims(token string) (*ServerClaims, error) {
v := ServerClaims{}
if err := Decode(token, &v); err != nil {
return nil, err
}
return &v, nil
}
func (s *ServerClaims) String() string {
return s.ClaimsData.String(s)
}
// Payload returns the server specific data
func (s *ServerClaims) Payload() interface{} {
return &s.Server
}
// Validate checks the generic and server data in the server claims
func (s *ServerClaims) Validate(vr *ValidationResults) {
s.ClaimsData.Validate(vr)
s.Server.Validate(vr)
}
// ExpectedPrefixes defines the types that can encode a server JWT, operator or cluster
func (s *ServerClaims) ExpectedPrefixes() []nkeys.PrefixByte {
return []nkeys.PrefixByte{nkeys.PrefixByteOperator, nkeys.PrefixByteCluster}
}
// Claims returns the generic data
func (s *ServerClaims) Claims() *ClaimsData {
return &s.ClaimsData
}
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