mtsatellite/cmd/mtwebmapper/misc.go
2015-03-02 13:14:29 +01:00

37 lines
587 B
Go

// Copyright 2014 by Sascha L. Teichmann
// Use of this source code is governed by the MIT license
// that can be found in the LICENSE file.
package main
import (
"net"
"strings"
)
func ipsFromHosts(hosts string) ([]net.IP, error) {
ips := []net.IP{}
if len(hosts) == 0 { // Empty list: allow all hosts.
return ips, nil
}
for _, host := range strings.Split(hosts, ";") {
if hips, err := net.LookupIP(host); err != nil {
return nil, err
} else {
ips = append(ips, hips...)
}
}
return ips, nil
}
func min(a, b int) int {
if a < b {
return a
}
return b
}