login-validator: new auth method: http forwarder

pkg/login-validator/cmd/auth_fwd.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"net/http"
+	"net/url"
+)
+
+type FWDAuth struct {
+	URI *url.URL
+}
+
+func (f FWDAuth) checkAuth(username, password string) (res bool, err error) {
+	if r, err := http.NewRequest("GET", f.URI.String(), nil); err != nil {
+		return false, err
+	} else {
+		r.SetBasicAuth(username, password)
+
+		if resp, err := http.DefaultClient.Do(r); err != nil {
+			return false, err
+		} else {
+			resp.Body.Close()
+
+			return resp.StatusCode < 400, err
+		}
+	}
+}