mirror of
https://github.com/smallstep/certificates.git
synced 2024-10-31 03:20:16 +00:00
132 lines
3.7 KiB
Go
132 lines
3.7 KiB
Go
package provisioner
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// SCEP is the SCEP provisioner type, an entity that can authorize the
|
|
// SCEP provisioning flow
|
|
type SCEP struct {
|
|
*base
|
|
ID string `json:"-"`
|
|
Type string `json:"type"`
|
|
Name string `json:"name"`
|
|
|
|
ForceCN bool `json:"forceCN,omitempty"`
|
|
ChallengePassword string `json:"challenge,omitempty"`
|
|
Capabilities []string `json:"capabilities,omitempty"`
|
|
// MinimumPublicKeyLength is the minimum length for public keys in CSRs
|
|
MinimumPublicKeyLength int `json:"minimumPublicKeyLength,omitempty"`
|
|
Options *Options `json:"options,omitempty"`
|
|
Claims *Claims `json:"claims,omitempty"`
|
|
claimer *Claimer
|
|
|
|
secretChallengePassword string
|
|
}
|
|
|
|
// GetID returns the provisioner unique identifier.
|
|
func (s *SCEP) GetID() string {
|
|
if s.ID != "" {
|
|
return s.ID
|
|
}
|
|
return s.GetIDForToken()
|
|
}
|
|
|
|
// GetIDForToken returns an identifier that will be used to load the provisioner
|
|
// from a token.
|
|
func (s *SCEP) GetIDForToken() string {
|
|
return "scep/" + s.Name
|
|
}
|
|
|
|
// GetName returns the name of the provisioner.
|
|
func (s *SCEP) GetName() string {
|
|
return s.Name
|
|
}
|
|
|
|
// GetType returns the type of provisioner.
|
|
func (s *SCEP) GetType() Type {
|
|
return TypeSCEP
|
|
}
|
|
|
|
// GetEncryptedKey returns the base provisioner encrypted key if it's defined.
|
|
func (s *SCEP) GetEncryptedKey() (string, string, bool) {
|
|
return "", "", false
|
|
}
|
|
|
|
// GetTokenID returns the identifier of the token.
|
|
func (s *SCEP) GetTokenID(ott string) (string, error) {
|
|
return "", errors.New("scep provisioner does not implement GetTokenID")
|
|
}
|
|
|
|
// GetOptions returns the configured provisioner options.
|
|
func (s *SCEP) GetOptions() *Options {
|
|
return s.Options
|
|
}
|
|
|
|
// DefaultTLSCertDuration returns the default TLS cert duration enforced by
|
|
// the provisioner.
|
|
func (s *SCEP) DefaultTLSCertDuration() time.Duration {
|
|
return s.claimer.DefaultTLSCertDuration()
|
|
}
|
|
|
|
// Init initializes and validates the fields of a SCEP type.
|
|
func (s *SCEP) Init(config Config) (err error) {
|
|
|
|
switch {
|
|
case s.Type == "":
|
|
return errors.New("provisioner type cannot be empty")
|
|
case s.Name == "":
|
|
return errors.New("provisioner name cannot be empty")
|
|
}
|
|
|
|
// Update claims with global ones
|
|
if s.claimer, err = NewClaimer(s.Claims, config.Claims); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Mask the actual challenge value, so it won't be marshaled
|
|
s.secretChallengePassword = s.ChallengePassword
|
|
s.ChallengePassword = "*** redacted ***"
|
|
|
|
// Default to 2048 bits minimum public key length (for CSRs) if not set
|
|
if s.MinimumPublicKeyLength == 0 {
|
|
s.MinimumPublicKeyLength = 2048
|
|
}
|
|
|
|
if s.MinimumPublicKeyLength%8 != 0 {
|
|
return errors.Errorf("only minimum public keys exactly divisible by 8 are supported; %d is not exactly divisible by 8", s.MinimumPublicKeyLength)
|
|
}
|
|
|
|
// TODO: add other, SCEP specific, options?
|
|
|
|
return err
|
|
}
|
|
|
|
// AuthorizeSign does not do any verification, because all verification is handled
|
|
// in the SCEP protocol. This method returns a list of modifiers / constraints
|
|
// on the resulting certificate.
|
|
func (s *SCEP) AuthorizeSign(ctx context.Context, token string) ([]SignOption, error) {
|
|
return []SignOption{
|
|
// modifiers / withOptions
|
|
newProvisionerExtensionOption(TypeSCEP, s.Name, ""),
|
|
newForceCNOption(s.ForceCN),
|
|
profileDefaultDuration(s.claimer.DefaultTLSCertDuration()),
|
|
// validators
|
|
newPublicKeyMinimumLengthValidator(s.MinimumPublicKeyLength),
|
|
newValidityValidator(s.claimer.MinTLSCertDuration(), s.claimer.MaxTLSCertDuration()),
|
|
}, nil
|
|
}
|
|
|
|
// GetChallengePassword returns the challenge password
|
|
func (s *SCEP) GetChallengePassword() string {
|
|
return s.secretChallengePassword
|
|
}
|
|
|
|
// GetCapabilities returns the CA capabilities
|
|
func (s *SCEP) GetCapabilities() []string {
|
|
return s.Capabilities
|
|
}
|