forked from TrueCloudLab/certificates
ee7db4006a
* authorize returns []interface{}
- operators in this list can conform to any interface the user decides
- our implementation has a combination of certificate claim validators
and certificate template modifiers.
* provisioners can set and enforce tls cert options
114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
package authority
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import (
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"net"
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"time"
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"github.com/pkg/errors"
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x509 "github.com/smallstep/cli/pkg/x509"
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)
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// certClaim interface is implemented by types used to validate specific claims in a
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// certificate request.
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type certClaim interface {
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Valid(crt *x509.Certificate) error
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}
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// ValidateClaims returns nil if all the claims are validated, it will return
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// the first error if a claim fails.
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func validateClaims(crt *x509.Certificate, claims []certClaim) (err error) {
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for _, c := range claims {
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if err = c.Valid(crt); err != nil {
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return err
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}
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}
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return
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}
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// commonNameClaim validates the common name of a certificate request.
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type commonNameClaim struct {
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name string
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}
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// Valid checks that certificate request common name matches the one configured.
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func (c *commonNameClaim) Valid(crt *x509.Certificate) error {
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if crt.Subject.CommonName == "" {
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return errors.New("common name cannot be empty")
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}
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if crt.Subject.CommonName != c.name {
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return errors.Errorf("common name claim failed - got %s, want %s", crt.Subject.CommonName, c.name)
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}
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return nil
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}
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type dnsNamesClaim struct {
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name string
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}
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// Valid checks that certificate request common name matches the one configured.
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func (c *dnsNamesClaim) Valid(crt *x509.Certificate) error {
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if len(crt.DNSNames) == 0 {
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return nil
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}
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for _, name := range crt.DNSNames {
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if name != c.name {
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return errors.Errorf("DNS names claim failed - got %s, want %s", name, c.name)
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}
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}
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return nil
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}
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type ipAddressesClaim struct {
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name string
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}
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// Valid checks that certificate request common name matches the one configured.
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func (c *ipAddressesClaim) Valid(crt *x509.Certificate) error {
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if len(crt.IPAddresses) == 0 {
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return nil
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}
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// If it's an IP validate that only that ip is in IP addresses
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if requestedIP := net.ParseIP(c.name); requestedIP != nil {
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for _, ip := range crt.IPAddresses {
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if !ip.Equal(requestedIP) {
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return errors.Errorf("IP addresses claim failed - got %s, want %s", ip, requestedIP)
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}
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}
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return nil
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}
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return errors.Errorf("IP addresses claim failed - got %v, want none", crt.IPAddresses)
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}
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// certTemporalClaim validates the certificate temporal validity settings.
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type certTemporalClaim struct {
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min time.Duration
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max time.Duration
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}
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// Validate validates the certificate temporal validity settings.
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func (ctc *certTemporalClaim) Valid(crt *x509.Certificate) error {
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var (
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na = crt.NotAfter
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nb = crt.NotBefore
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d = na.Sub(nb)
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now = time.Now()
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)
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if na.Before(now) {
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return errors.Errorf("NotAfter: %v cannot be in the past", na)
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}
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if na.Before(nb) {
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return errors.Errorf("NotAfter: %v cannot be before NotBefore: %v", na, nb)
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}
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if d < ctc.min {
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return errors.Errorf("requested duration of %v is less than the authorized minimum certificate duration of %v",
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d, ctc.min)
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}
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if d > ctc.max {
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return errors.Errorf("requested duration of %v is more than the authorized maximum certificate duration of %v",
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d, ctc.max)
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}
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return nil
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}
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