mirror of
https://github.com/owncast/owncast.git
synced 2024-11-23 13:24:33 +03:00
36 lines
759 B
Go
36 lines
759 B
Go
|
package utils
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
|
||
|
|
log "github.com/sirupsen/logrus"
|
||
|
|
)
|
||
|
|
|
||
|
|
// IsHostnameInternal will attempt to determine if the hostname is internal to
|
||
|
|
// this server's network or is the loopback address.
|
||
|
|
func IsHostnameInternal(hostname string) bool {
|
||
|
|
// If this is already an IP address don't try to resolve it
|
||
|
|
if ip := net.ParseIP(hostname); ip != nil {
|
||
|
|
return isIPAddressInternal(ip)
|
||
|
|
}
|
||
|
|
|
||
|
|
ips, err := net.LookupIP(hostname)
|
||
|
|
if err != nil {
|
||
|
|
// Default to false if we can't resolve the hostname.
|
||
|
|
log.Debugln("Unable to resolve hostname:", hostname)
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, ip := range ips {
|
||
|
|
if isIPAddressInternal(ip) {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
func isIPAddressInternal(ip net.IP) bool {
|
||
|
|
return ip.IsLoopback() || ip.IsPrivate()
|
||
|
|
}
|