jwt: Add JWT support for minio server.

Please read JWT.md before using this feature.

web-config.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/minio/minio-xl/pkg/probe"
+	"github.com/minio/minio/pkg/user"
+)
+
+var customWebConfigDir = ""
+
+// getWebConfigDir get web config dir.
+func getWebConfigDir() (string, *probe.Error) {
+	if customWebConfigDir != "" {
+		return customWebConfigDir, nil
+	}
+	homeDir, e := user.HomeDir()
+	if e != nil {
+		return "", probe.NewError(e)
+	}
+	webConfigDir := filepath.Join(homeDir, ".minio", "web")
+	return webConfigDir, nil
+}
+
+func mustGetWebConfigDir() string {
+	webConfigDir, err := getWebConfigDir()
+	fatalIf(err.Trace(), "Unable to get config path.", nil)
+	return webConfigDir
+}
+
+// createWebConfigDir create users config path
+func createWebConfigDir() *probe.Error {
+	webConfigDir, err := getWebConfigDir()
+	if err != nil {
+		return err.Trace()
+	}
+	if err := os.MkdirAll(webConfigDir, 0700); err != nil {
+		return probe.NewError(err)
+	}
+	return nil
+}
+
+func mustGetPrivateKeyPath() string {
+	webConfigDir, err := getWebConfigDir()
+	fatalIf(err.Trace(), "Unable to get config path.", nil)
+	return webConfigDir + "/private.key"
+}
+
+func mustGetPublicKeyPath() string {
+	webConfigDir, err := getWebConfigDir()
+	fatalIf(err.Trace(), "Unable to get config path.", nil)
+	return webConfigDir + "/public.key"
+}