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Resolve hostname to localhost

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This commit is contained in:
Daniel 2021-11-18 16:28:26 +01:00
parent 8794d72318
commit e092ab9831
2 changed files with 11 additions and 2 deletions
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7
nameserver/module.go
View file

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"net"
"os"
"strconv"
"github.com/safing/portbase/log"
@ -46,6 +47,12 @@ func start() error {
return fmt.Errorf("failed to parse nameserver listen address: %w", err)
}
hostname, err = os.Hostname()
if err != nil {
log.Warningf("nameserver: failed to get hostname: %s", err)
}
hostname += "."
// Start listener(s).
if ip2 == nil {
// Start a single listener.

6
nameserver/nameserver.go
View file

@ -19,6 +19,8 @@ import (
"github.com/miekg/dns"
)
var hostname string
func handleRequestAsWorker(w dns.ResponseWriter, query *dns.Msg) {
err := module.RunWorker("dns request", func(ctx context.Context) error {
return handleRequest(ctx, w, query)
@ -87,8 +89,8 @@ func handleRequest(ctx context.Context, w dns.ResponseWriter, request *dns.Msg)
return reply(nsutil.Refused("unsupported qclass"))
}
// Handle request for localhost.
if strings.HasSuffix(q.FQDN, "localhost.") {
// Handle request for localhost and the hostname.
if strings.HasSuffix(q.FQDN, "localhost.") || q.FQDN == hostname {
tracer.Tracef("nameserver: returning localhost records")
return reply(nsutil.Localhost())
}