coredns/plugin/kubernetes/local.go
Miek Gieben b003d06003
For caddy v1 in our org (#4018)
* For caddy v1 in our org

This RP changes all imports for caddyserver/caddy to coredns/caddy. This
is the v1 code of caddy.

For the coredns/caddy repo the following changes have been made:

* anything not needed by us is deleted
* all `telemetry` stuff is deleted
* all its import paths are also changed to point to coredns/caddy
* the v1 branch has been moved to the master branch
* a v1.1.0 tag has been added to signal the latest release

Signed-off-by: Miek Gieben <miek@miek.nl>

* Fix imports

Signed-off-by: Miek Gieben <miek@miek.nl>

* Group coredns/caddy with out plugins

Signed-off-by: Miek Gieben <miek@miek.nl>

* remove this file

Signed-off-by: Miek Gieben <miek@miek.nl>

* Relax import ordering

github.com/coredns is now also a coredns dep, this makes
github.com/coredns/caddy fit more natural in the list.

Signed-off-by: Miek Gieben <miek@miek.nl>

* Fix final import

Signed-off-by: Miek Gieben <miek@miek.nl>
2020-09-24 18:14:41 +02:00

37 lines
768 B
Go

package kubernetes
import (
"net"
"github.com/coredns/caddy"
"github.com/coredns/coredns/core/dnsserver"
)
// boundIPs returns the list of non-loopback IPs that CoreDNS is bound to
func boundIPs(c *caddy.Controller) (ips []net.IP) {
conf := dnsserver.GetConfig(c)
hosts := conf.ListenHosts
if hosts == nil || hosts[0] == "" {
hosts = nil
addrs, err := net.InterfaceAddrs()
if err != nil {
return nil
}
for _, addr := range addrs {
hosts = append(hosts, addr.String())
}
}
for _, host := range hosts {
ip, _, _ := net.ParseCIDR(host)
ip4 := ip.To4()
if ip4 != nil && !ip4.IsLoopback() {
ips = append(ips, ip4)
continue
}
ip6 := ip.To16()
if ip6 != nil && !ip6.IsLoopback() {
ips = append(ips, ip6)
}
}
return ips
}