Update file-headers and add a testing geoip_notify script

internal/fail2ban/client.go

@@ -1,3 +1,19 @@
+// Fail2ban UI - A Swiss made, management interface for Fail2ban.
+//
+// Copyright (C) 2025 Swissmakers GmbH (https://swissmakers.ch)
+//
+// Licensed under the GNU General Public License, Version 3 (GPL-3.0)
+// You may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package fail2ban
 
 import (
@@ -21,7 +37,7 @@ func GetJails() ([]string, error) {
 	cmd := exec.Command("fail2ban-client", "status")
 	out, err := cmd.CombinedOutput()
 	if err != nil {
-		return nil, fmt.Errorf("could not run 'fail2ban-client status': %v", err)
+		return nil, fmt.Errorf("could not get jail information. is fail2ban running? error: %v", err)
 	}
 
 	var jails []string