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/tls/configure -- allow submitting empty certificates and keys to clear them out from config
This commit is contained in:
Eugene Bujak
Eugene Bujak
parent
1dd548c36c
commit
4a14c199d8
1 changed files with 92 additions and 84 deletions
176
control.go
176
control.go
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@ -1049,105 +1049,113 @@ func handleTLSConfigure(w http.ResponseWriter, r *http.Request) {
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return
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}
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certPEM, err := base64.StdEncoding.DecodeString(data.CertificateChain)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to base64-decode certificate chain: %s", err)
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return
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}
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var mainCert *x509.Certificate
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keyPEM, err := base64.StdEncoding.DecodeString(data.PrivateKey)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to base64-decode private key: %s", err)
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return
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}
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log.Printf("got certificate: %s", certPEM)
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_, err = tls.X509KeyPair(certPEM, keyPEM)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Invalid certificate or key: %s", err)
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return
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}
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// now do a more extended validation
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var certs []*pem.Block // PEM-encoded certificates
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var skippedBytes []string // skipped bytes
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pemblock := []byte(certPEM)
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for {
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var decoded *pem.Block
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decoded, pemblock = pem.Decode(pemblock)
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if decoded == nil {
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break
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}
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if decoded.Type == "CERTIFICATE" {
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certs = append(certs, decoded)
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} else {
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skippedBytes = append(skippedBytes, decoded.Type)
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}
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}
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var parsedCerts []*x509.Certificate
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for _, cert := range certs {
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parsed, err := x509.ParseCertificate(cert.Bytes)
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if data.CertificateChain != "" {
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certPEM, err := base64.StdEncoding.DecodeString(data.CertificateChain)
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if err != nil {
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httpError(w, http.StatusBadRequest, "failed to parse certificate: %s", err)
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httpError(w, http.StatusBadRequest, "Failed to base64-decode certificate chain: %s", err)
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return
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}
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parsedCerts = append(parsedCerts, parsed)
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}
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if len(parsedCerts) == 0 {
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httpError(w, http.StatusBadRequest, "You have specified an empty certificate")
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return
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}
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log.Printf("got certificate: %s", certPEM)
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// spew.Dump(parsedCerts)
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if data.PrivateKey != "" {
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keyPEM, err := base64.StdEncoding.DecodeString(data.PrivateKey)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Failed to base64-decode private key: %s", err)
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return
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}
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opts := x509.VerifyOptions{
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DNSName: data.ServerName,
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}
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log.Printf("number of certs - %d", len(parsedCerts))
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if len(parsedCerts) > 1 {
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// set up an intermediate
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pool := x509.NewCertPool()
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for _, cert := range parsedCerts[1:] {
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log.Printf("got an intermediate cert")
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pool.AddCert(cert)
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_, err = tls.X509KeyPair(certPEM, keyPEM)
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if err != nil {
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httpError(w, http.StatusBadRequest, "Invalid certificate or key: %s", err)
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return
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}
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}
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opts.Intermediates = pool
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}
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// TODO: save it as a warning rather than error it out -- shouldn't be a big problem
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mainCert := parsedCerts[0]
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_, err = mainCert.Verify(opts)
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if err != nil {
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// TODO: let self-signed certs through
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httpError(w, http.StatusBadRequest, "Your certificate does not verify: %s", err)
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return
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// now do a more extended validation
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var certs []*pem.Block // PEM-encoded certificates
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var skippedBytes []string // skipped bytes
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pemblock := []byte(certPEM)
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for {
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var decoded *pem.Block
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decoded, pemblock = pem.Decode(pemblock)
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if decoded == nil {
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break
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}
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if decoded.Type == "CERTIFICATE" {
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certs = append(certs, decoded)
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} else {
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skippedBytes = append(skippedBytes, decoded.Type)
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}
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}
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var parsedCerts []*x509.Certificate
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for _, cert := range certs {
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parsed, err := x509.ParseCertificate(cert.Bytes)
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if err != nil {
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httpError(w, http.StatusBadRequest, "failed to parse certificate: %s", err)
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return
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}
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parsedCerts = append(parsedCerts, parsed)
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}
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if len(parsedCerts) == 0 {
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httpError(w, http.StatusBadRequest, "You have specified an empty certificate")
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return
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}
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// spew.Dump(parsedCerts)
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opts := x509.VerifyOptions{
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DNSName: data.ServerName,
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}
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log.Printf("number of certs - %d", len(parsedCerts))
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if len(parsedCerts) > 1 {
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// set up an intermediate
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pool := x509.NewCertPool()
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for _, cert := range parsedCerts[1:] {
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log.Printf("got an intermediate cert")
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pool.AddCert(cert)
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}
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opts.Intermediates = pool
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}
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// TODO: save it as a warning rather than error it out -- shouldn't be a big problem
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mainCert := parsedCerts[0]
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_, err = mainCert.Verify(opts)
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if err != nil {
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// TODO: let self-signed certs through
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httpError(w, http.StatusBadRequest, "Your certificate does not verify: %s", err)
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return
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}
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// spew.Dump(chains)
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}
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// spew.Dump(chains)
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config.TLS = data
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// update status
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config.TLS.StatusCertificate = fmt.Sprintf("Certificate expires on %s", mainCert.NotAfter) //, valid for hostname %s", mainCert.NotAfter, mainCert.Subject.CommonName)
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if len(mainCert.DNSNames) == 1 {
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config.TLS.StatusCertificate += fmt.Sprintf(", valid for hostname %s", mainCert.DNSNames[0])
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} else if len(mainCert.DNSNames) > 1 {
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config.TLS.StatusCertificate += ", valid for hostnames " + strings.Join(mainCert.DNSNames, ", ")
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}
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if mainCert != nil {
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config.TLS.StatusCertificate = fmt.Sprintf("Certificate expires on %s", mainCert.NotAfter) //, valid for hostname %s", mainCert.NotAfter, mainCert.Subject.CommonName)
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if len(mainCert.DNSNames) == 1 {
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config.TLS.StatusCertificate += fmt.Sprintf(", valid for hostname %s", mainCert.DNSNames[0])
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} else if len(mainCert.DNSNames) > 1 {
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config.TLS.StatusCertificate += ", valid for hostnames " + strings.Join(mainCert.DNSNames, ", ")
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}
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// issue a warning if certificate is about to expire
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now := time.Now()
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if mainCert.NotAfter.AddDate(0, 0, -30).After(now) {
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timeLeft := time.Until(mainCert.NotAfter)
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if timeLeft > 0 {
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config.TLS.Warning = fmt.Sprintf("Your certificate expires in %.0f days, we recommend you update it soon", timeLeft.Hours()/24)
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} else {
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config.TLS.Warning = fmt.Sprintf("Your certificate has expired on %s, we recommend you update it immediatedly", mainCert.NotAfter)
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// issue a warning if certificate is about to expire
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now := time.Now()
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if mainCert.NotAfter.AddDate(0, 0, -30).After(now) {
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timeLeft := time.Until(mainCert.NotAfter)
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if timeLeft > 0 {
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config.TLS.Warning = fmt.Sprintf("Your certificate expires in %.0f days, we recommend you update it soon", timeLeft.Hours()/24)
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} else {
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config.TLS.Warning = fmt.Sprintf("Your certificate has expired on %s, we recommend you update it immediatedly", mainCert.NotAfter)
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}
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}
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}
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httpUpdateConfigReloadDNSReturnOK(w, r)
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