mirror of
https://github.com/akvorado/akvorado.git
synced 2025-12-11 22:14:02 +01:00
39 lines
907 B
Go
39 lines
907 B
Go
// SPDX-FileCopyrightText: 2022 Free Mobile
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
package helpers
|
|
|
|
import (
|
|
"net"
|
|
"strconv"
|
|
|
|
"github.com/go-playground/validator/v10"
|
|
)
|
|
|
|
// Validate is a validator instance to be used everywhere.
|
|
var Validate *validator.Validate
|
|
|
|
// isListen validates a <dns>:<port> combination for fields typically used for listening address
|
|
func isListen(fl validator.FieldLevel) bool {
|
|
val := fl.Field().String()
|
|
host, port, err := net.SplitHostPort(val)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
// Port must be a iny <= 65535.
|
|
if portNum, err := strconv.ParseInt(port, 10, 32); err != nil || portNum > 65535 || portNum < 0 {
|
|
return false
|
|
}
|
|
|
|
// If host is specified, it should match a DNS name
|
|
if host != "" {
|
|
return Validate.Var(host, "hostname_rfc1123") == nil
|
|
}
|
|
return true
|
|
}
|
|
|
|
func init() {
|
|
Validate = validator.New()
|
|
Validate.RegisterValidation("listen", isListen)
|
|
}
|