Remove duplication on certificates code

Signed-off-by: David Gageot <david@gageot.net>

commands/commands.go

@@ -4,13 +4,11 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"path/filepath"
 	"strings"
 
 	"github.com/codegangsta/cli"
 	"github.com/docker/machine/commands/mcndirs"
 	"github.com/docker/machine/libmachine"
-	"github.com/docker/machine/libmachine/cert"
 	"github.com/docker/machine/libmachine/crashreport"
 	"github.com/docker/machine/libmachine/drivers/rpc"
 	"github.com/docker/machine/libmachine/host"
@@ -391,36 +389,3 @@ func consolidateErrs(errs []error) error {
 
 	return errors.New(strings.TrimSpace(finalErr))
 }
-
-// Returns the cert paths.  codegangsta/cli will not set the cert paths if the
-// storage-path is set to something different so we cannot use the paths in the
-// global options. le sigh.
-func getCertPathInfoFromCommandLine(c CommandLine) cert.PathInfo {
-	caCertPath := c.GlobalString("tls-ca-cert")
-	caKeyPath := c.GlobalString("tls-ca-key")
-	clientCertPath := c.GlobalString("tls-client-cert")
-	clientKeyPath := c.GlobalString("tls-client-key")
-
-	if caCertPath == "" {
-		caCertPath = filepath.Join(mcndirs.GetMachineCertDir(), "ca.pem")
-	}
-
-	if caKeyPath == "" {
-		caKeyPath = filepath.Join(mcndirs.GetMachineCertDir(), "ca-key.pem")
-	}
-
-	if clientCertPath == "" {
-		clientCertPath = filepath.Join(mcndirs.GetMachineCertDir(), "cert.pem")
-	}
-
-	if clientKeyPath == "" {
-		clientKeyPath = filepath.Join(mcndirs.GetMachineCertDir(), "key.pem")
-	}
-
-	return cert.PathInfo{
-		CaCertPath:       caCertPath,
-		CaPrivateKeyPath: caKeyPath,
-		ClientCertPath:   clientCertPath,
-		ClientKeyPath:    clientKeyPath,
-	}
-}

commands/create.go

@@ -162,15 +162,13 @@ func cmdCreateInner(c CommandLine, api libmachine.API) error {
 		return fmt.Errorf("Error getting new host: %s", err)
 	}
 
-	certInfo := getCertPathInfoFromCommandLine(c)
-
 	h.HostOptions = &host.Options{
 		AuthOptions: &auth.Options{
 			CertDir:          mcndirs.GetMachineCertDir(),
-			CaCertPath:       certInfo.CaCertPath,
-			CaPrivateKeyPath: certInfo.CaPrivateKeyPath,
-			ClientCertPath:   certInfo.ClientCertPath,
-			ClientKeyPath:    certInfo.ClientKeyPath,
+			CaCertPath:       tlsPath(c, "tls-ca-cert", "ca.pem"),
+			CaPrivateKeyPath: tlsPath(c, "tls-ca-key", "ca-key.pem"),
+			ClientCertPath:   tlsPath(c, "tls-client-cert", "cert.pem"),
+			ClientKeyPath:    tlsPath(c, "tls-client-key", "key.pem"),
 			ServerCertPath:   filepath.Join(mcndirs.GetMachineDir(), name, "server.pem"),
 			ServerKeyPath:    filepath.Join(mcndirs.GetMachineDir(), name, "server-key.pem"),
 			StorePath:        filepath.Join(mcndirs.GetMachineDir(), name),
@@ -433,3 +431,12 @@ func validateSwarmDiscovery(discovery string) error {
 
 	return fmt.Errorf("Swarm Discovery URL was in the wrong format: %s", discovery)
 }
+
+func tlsPath(c CommandLine, flag string, defaultName string) string {
+	path := c.GlobalString(flag)
+	if path != "" {
+		return path
+	}
+
+	return filepath.Join(mcndirs.GetMachineCertDir(), defaultName)
+}

libmachine/cert/cert_path_info.go

@@ -1,10 +0,0 @@
-package cert
-
-type PathInfo struct {
-	CaCertPath       string
-	CaPrivateKeyPath string
-	ClientCertPath   string
-	ClientKeyPath    string
-	ServerCertPath   string
-	ServerKeyPath    string
-}