func (s *Store) validateCert(certID string, c *fdb.Collection) error {
ss, err := fdb.String(c.Open("url"))
if err != nil {
return err
}
ss = strings.TrimSpace(ss)
if !acmeapi.ValidURL(ss) {
return fmt.Errorf("certificate has invalid URI")
}
actualCertID := determineCertificateID(ss)
if certID != actualCertID {
return fmt.Errorf("cert ID mismatch: %#v != %#v", certID, actualCertID)
}
crt := &Certificate{
URL: ss,
Certificates: nil,
Cached: false,
}
fullchain, err := fdb.Bytes(c.Open("fullchain"))
if err == nil {
certs, err := acmeutils.LoadCertificates(fullchain)
if err != nil {
return err
}
xcrt, err := x509.ParseCertificate(certs[0])
if err != nil {
return err
}
keyID := determineKeyIDFromCert(xcrt)
crt.Key = s.keys[keyID]
if crt.Key != nil {
err := c.WriteLink("privkey", fdb.Link{"keys/" + keyID + "/privkey"})
if err != nil {
return err
}
}
crt.Certificates = certs
crt.Cached = true
}
// TODO: obtain derived data
s.certs[certID] = crt
return nil
}
// The Let's Encrypt state directory format keeps certificates but not their
// URLs. Since boulder uses the serial number to form the URL, we can
// reconstruct the URL. But since not even the provider association is stored,
// we have to guess.
func determineLECertificateURL(certFilename string) (string, error) {
b, err := ioutil.ReadFile(certFilename)
if err != nil {
return "", err
}
certs, err := acmeutils.LoadCertificates(b)
if err != nil {
return "", err
}
if len(certs) == 0 {
return "", fmt.Errorf("no certs")
}
c, err := x509.ParseCertificate(certs[0])
if err != nil {
return "", err
}
sn := fmt.Sprintf("%036x", c.SerialNumber)
for u := range knownProviderURLs {
certURL, err := convertBoulderProviderURLToCertificateURL(u, sn)
if err != nil {
continue
}
cl := acmeapi.Client{
DirectoryURL: u,
}
crt := acmeapi.Certificate{
URI: certURL,
}
err = cl.LoadCertificate(&crt, context.TODO())
if err != nil {
continue
}
return certURL, nil
}
return "", fmt.Errorf("cannot find certificate URL for %#v (serial %#v)", certFilename, sn)
}