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|
package bind
import (
"fmt"
"net"
"github.com/coredns/caddy"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
)
func setup(c *caddy.Controller) error {
config := dnsserver.GetConfig(c)
// addresses will be consolidated over all BIND directives available in that BlocServer
all := []string{}
for c.Next() {
args := c.RemainingArgs()
if len(args) == 0 {
return plugin.Error("bind", fmt.Errorf("at least one address or interface name is expected"))
}
ifaces, err := net.Interfaces()
if err != nil {
return plugin.Error("bind", fmt.Errorf("failed to get interfaces list"))
}
var isIface bool
for _, arg := range args {
isIface = false
for _, iface := range ifaces {
if arg == iface.Name {
isIface = true
addrs, err := iface.Addrs()
if err != nil {
return plugin.Error("bind", fmt.Errorf("failed to get the IP addresses of the interface: %q", arg))
}
for _, addr := range addrs {
if ipnet, ok := addr.(*net.IPNet); ok {
if ipnet.IP.To4() != nil || (!ipnet.IP.IsLinkLocalMulticast() && !ipnet.IP.IsLinkLocalUnicast()) {
all = append(all, ipnet.IP.String())
}
}
}
}
}
if !isIface {
if net.ParseIP(arg) == nil {
return plugin.Error("bind", fmt.Errorf("not a valid IP address or interface name: %q", arg))
}
all = append(all, arg)
}
}
}
config.ListenHosts = all
return nil
}
|
