Mirrors/coredns
1
0
Fork 0
mirror of https://github.com/coredns/coredns.git synced 2025-11-01 02:33:14 -04:00
Code Issues Packages Projects Releases Wiki Activity

plugin/hosts provide more configuration flexibility (#2535)

Browse Source 
* plugin/hosts provide more configuration flexibility

This patch adds few features to the host plugin
 * no-reverse (both as first argument on the plugin line and inline)
   disable the automatic generation of reserve entries for hosts
 * ttl <duration> (inline only atm)
   allows to change the default ttl (default 5 minutes)
 * reload <duration> (inline only atm)
   allows to change the reloading interval (default 5s)

* plugin/hosts remove superfluous parameters to parse
This commit is contained in:
Thomas Mangin
2019-02-12 16:09:33 +00:00
committed by Pat Moroney
parent e47d881461
commit 4b402e000d
6 changed files with 163 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
plugin/hosts/hosts.go
View File

@@ -43,13 +43,13 @@ func (h Hosts) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (
// If this doesn't match we need to fall through regardless of h.Fallthrough
return plugin.NextOrFailure(h.Name(), h.Next, ctx, w, r)
}
answers = h.ptr(qname, names)
answers = h.ptr(qname, h.options.ttl, names)
case dns.TypeA:
ips := h.LookupStaticHostV4(qname)
answers = a(qname, ips)
answers = a(qname, h.options.ttl, ips)
case dns.TypeAAAA:
ips := h.LookupStaticHostV6(qname)
answers = aaaa(qname, ips)
answers = aaaa(qname, h.options.ttl, ips)
}
if len(answers) == 0 {
@@ -96,12 +96,12 @@ func (h Hosts) otherRecordsExist(qtype uint16, qname string) bool {
func (h Hosts) Name() string { return "hosts" }
// a takes a slice of net.IPs and returns a slice of A RRs.
func a(zone string, ips []net.IP) []dns.RR {
func a(zone string, ttl uint32, ips []net.IP) []dns.RR {
answers := []dns.RR{}
for _, ip := range ips {
r := new(dns.A)
r.Hdr = dns.RR_Header{Name: zone, Rrtype: dns.TypeA,
Class: dns.ClassINET, Ttl: 3600}
Class: dns.ClassINET, Ttl: ttl}
r.A = ip
answers = append(answers, r)
}
@@ -109,12 +109,12 @@ func a(zone string, ips []net.IP) []dns.RR {
}
// aaaa takes a slice of net.IPs and returns a slice of AAAA RRs.
func aaaa(zone string, ips []net.IP) []dns.RR {
func aaaa(zone string, ttl uint32, ips []net.IP) []dns.RR {
answers := []dns.RR{}
for _, ip := range ips {
r := new(dns.AAAA)
r.Hdr = dns.RR_Header{Name: zone, Rrtype: dns.TypeAAAA,
Class: dns.ClassINET, Ttl: 3600}
Class: dns.ClassINET, Ttl: ttl}
r.AAAA = ip
answers = append(answers, r)
}
@@ -122,12 +122,12 @@ func aaaa(zone string, ips []net.IP) []dns.RR {
}
// ptr takes a slice of host names and filters out the ones that aren't in Origins, if specified, and returns a slice of PTR RRs.
func (h *Hosts) ptr(zone string, names []string) []dns.RR {
func (h *Hosts) ptr(zone string, ttl uint32, names []string) []dns.RR {
answers := []dns.RR{}
for _, n := range names {
r := new(dns.PTR)
r.Hdr = dns.RR_Header{Name: zone, Rrtype: dns.TypePTR,
Class: dns.ClassINET, Ttl: 3600}
Class: dns.ClassINET, Ttl: ttl}
r.Ptr = dns.Fqdn(n)
answers = append(answers, r)
}