Support literal IPv6 nameservers

This effectively means that `doggo @2001:DB8::53 example.org` works just
like we know it from `dig(1)`. This already works for IPv4 because
`url.Parse` accepts a literal IPv4 address, but not a literal IPv6
address (due to parsing ambiguities with strings that look like an IPv4
address I guess).

This is implemented by checking if the nameserver argument is a valid IP
if the URL validation failed. If that's the case, `ns` is returned
directly with the `[2001:DB8::53]:53` as address (from
`net.JoinHostPort` with the default DNS port) and UDP as protocol (also
the default if not specified).
pull/66/head
Maximilian Bosch 2022-12-13 12:35:44 +01:00 committed by Karan Sharma
parent c21f90c2bc
commit 88c63d6b41
1 changed files with 5 additions and 1 deletions

View File

@ -61,8 +61,12 @@ func initNameserver(n string) (models.Nameserver, error) {
}
u, err := url.Parse(n)
if err != nil {
ip := net.ParseIP(n)
if ip == nil {
return ns, err
}
return ns, nil
}
switch u.Scheme {
case "sdns":
stamp, err := dnsstamps.NewServerStampFromString(n)