command factory

1 files changed, 31 insertions, 0 deletions

diff --git a/user.go b/user.go
new file mode 100644
index 00000000..1d47b5fb
--- /dev/null
+++ b/user.go
@@ -0,0 +1,31 @@
+package roadrunner
+
+import (
+	"os/user"
+	"fmt"
+)
+
+// resolveUser attempt to find system user by it's name or uid.
+func resolveUser(u string) (usr *user.User, err error) {
+	usr, err = user.LookupId(u)
+	if usr != nil {
+		return usr, nil
+	}
+
+	return user.Lookup(u)
+}
+
+// resolveUser attempt to find system group by it's name or uid.
+func resolveGroup(g string) (grp *user.Group, err error) {
+	grp, err = user.LookupGroupId(g)
+	if grp != nil && grp.Name != "nogroup" {
+		return grp, nil
+	}
+
+	grp, err = user.LookupGroup(g)
+	if grp != nil && grp.Name != "nogroup" {
+		return grp, nil
+	}
+
+	return nil, fmt.Errorf("no such group %s", g)
+}