goint there

shared/permisions.go

@@ -0,0 +1,9 @@
+package shared
+
+import (
+	"os"
+)
+
+const DIRECTORY_PERMISSION os.FileMode = 0700
+const PUBLIC_KEY_PERMISSION os.FileMode = 0644
+const PRIVATE_KEY_PERMISSION os.FileMode = 0600

shared/shared.go

@@ -0,0 +1,39 @@
+package shared
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path"
+)
+
+var ecryptoDir string
+
+func ensureEcryptoDirectoryIsOkay(dir string) error {
+	stat, err := os.Stat(dir)
+	if os.IsNotExist(err) {
+		return os.Mkdir(dir, DIRECTORY_PERMISSION)
+	} else if err != nil {
+		return err
+	} else if !stat.IsDir() {
+		return errors.New(dir + " is not a directory")
+	} else if perm := stat.Mode().Perm(); perm != DIRECTORY_PERMISSION {
+		msg := fmt.Sprintf("root folder has bad file permission.  should be set to %v  but vas %v", DIRECTORY_PERMISSION, perm)
+		return errors.New(msg)
+	}
+	return nil
+
+}
+
+func init() {
+	ecryptoDir = path.Join(os.Getenv("HOME"), ".ecrypto")
+	if err := ensureEcryptoDirectoryIsOkay(ecryptoDir); err != nil {
+		fmt.Println("cannot work with eCrypto directory", err)
+		os.Exit(1)
+
+	}
+}
+
+func GetEcryptoDir() string {
+	return ecryptoDir
+}