Remove spurious error: OCSP expired

Signed-off-by: eriknordmark <erik@zededa.com>
(cherry picked from commit 000b356)

pkg/pillar/zedcloud/send.go

@@ -764,19 +764,11 @@ func SendOnIntf(workContext context.Context, ctx *ZedCloudContext, destURL strin
 				continue
 			}
 
-			if connState.OCSPResponse == nil ||
-				!stapledCheck(log, connState) {
-
-				if connState.OCSPResponse == nil {
-					// XXX remove debug check
-					log.Tracef("no OCSP response for %s\n",
-						reqUrl)
-				}
-				errStr := fmt.Sprintf("OCSP stapled check failed for %s",
-					reqUrl)
-
-				//XXX OSCP is not implemented in cloud side so
-				// commenting out it for now.
+			if ok, err := stapledCheck(log, connState); !ok {
+				errStr := fmt.Sprintf("OCSP stapled check failed for %s: %s",
+					reqUrl, err)
+				// XXX OSCP is not implemented in controller
+				// so commenting out it for now.
 				if false {
 					log.Errorln(errStr)
 					// Inform ledmanager about broken cloud connectivity

pkg/pillar/zedcloud/tls.go

@@ -308,38 +308,45 @@ func UpdateTLSProxyCerts(ctx *ZedCloudContext) bool {
 	return true
 }
 
-func stapledCheck(log *base.LogObject, connState *tls.ConnectionState) bool {
+func stapledCheck(log *base.LogObject, connState *tls.ConnectionState) (bool, error) {
+	if connState.OCSPResponse == nil {
+		return false, errors.New("no OCSP response")
+	}
 	if connState.VerifiedChains == nil {
-		log.Errorln("stapledCheck: No VerifiedChains")
-		return false
+		return false, errors.New("stapledCheck: No VerifiedChains")
+
 	}
 	if len(connState.VerifiedChains[0]) == 0 {
-		log.Errorln("stapledCheck: No VerifiedChains 2")
-		return false
+		return false, errors.New("stapledCheck: No VerifiedChains 2")
+
 	}
 
 	issuer := connState.VerifiedChains[0][1]
 	resp, err := ocsp.ParseResponse(connState.OCSPResponse, issuer)
 	if err != nil {
-		log.Errorln("stapledCheck: error parsing response: ", err)
-		return false
+		return false,
+			fmt.Errorf("stapledCheck: error parsing response: %s ",
+				err)
+
 	}
 	now := time.Now()
 	age := now.Unix() - resp.ProducedAt.Unix()
 	remain := resp.NextUpdate.Unix() - now.Unix()
 	log.Tracef("OCSP age %d, remain %d\n", age, remain)
 	if remain < 0 {
-		log.Errorln("OCSP expired.")
-		return false
+		return false, errors.New("OCSP expired.")
 	}
-	if resp.Status == ocsp.Good {
+	switch resp.Status {
+	case ocsp.Good:
 		log.Traceln("Certificate Status Good.")
-	} else if resp.Status == ocsp.Unknown {
-		log.Errorln("Certificate Status Unknown")
-	} else {
-		log.Errorln("Certificate Status Revoked")
+		return true, nil
+	case ocsp.Unknown:
+		return false, errors.New("Certificate Status Unknown")
+	case ocsp.Revoked:
+		return false, errors.New("Certificate Status Revoked")
+	default:
+		return false, fmt.Errorf("Unknown OCSP status %d", resp.Status)
 	}
-	return resp.Status == ocsp.Good
 }
 
 func updateEtcSSLforProxyCerts(ctx *ZedCloudContext, dns *types.DeviceNetworkStatus) {