159 lines
5.9 KiB
Go
159 lines
5.9 KiB
Go
// Copyright or © or Copr. happyDNS (2020)
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//
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// contact@happydomain.org
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//
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// This software is a computer program whose purpose is to provide a modern
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// interface to interact with DNS systems.
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//
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// This software is governed by the CeCILL license under French law and abiding
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// by the rules of distribution of free software. You can use, modify and/or
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// redistribute the software under the terms of the CeCILL license as
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// circulated by CEA, CNRS and INRIA at the following URL
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// "http://www.cecill.info".
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//
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// As a counterpart to the access to the source code and rights to copy, modify
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// and redistribute granted by the license, users are provided only with a
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// limited warranty and the software's author, the holder of the economic
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// rights, and the successive licensors have only limited liability.
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//
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// In this respect, the user's attention is drawn to the risks associated with
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// loading, using, modifying and/or developing or reproducing the software by
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// the user in light of its specific status of free software, that may mean
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// that it is complicated to manipulate, and that also therefore means that it
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// is reserved for developers and experienced professionals having in-depth
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// computer knowledge. Users are therefore encouraged to load and test the
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// software's suitability as regards their requirements in conditions enabling
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// the security of their systems and/or data to be ensured and, more generally,
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// to use and operate it in the same conditions as regards security.
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//
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// The fact that you are presently reading this means that you have had
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// knowledge of the CeCILL license and that you accept its terms.
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package abstract
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import (
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"fmt"
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"strings"
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"time"
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"github.com/miekg/dns"
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"git.happydns.org/happydomain/model"
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"git.happydns.org/happydomain/services"
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"git.happydns.org/happydomain/services/common"
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"git.happydns.org/happydomain/utils"
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)
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type Origin struct {
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Ns string `json:"mname" happydomain:"label=Name Server,placeholder=ns0,required,description=The domain name of the name server that was the original or primary source of data for this zone."`
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Mbox string `json:"rname" happydomain:"label=Contact Email,required,description=A <domain-name> which specifies the mailbox of the person responsible for this zone."`
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Serial uint32 `json:"serial" happydomain:"label=Zone Serial,required,description=The unsigned 32 bit version number of the original copy of the zone. Zone transfers preserve this value. This value wraps and should be compared using sequence space arithmetic."`
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Refresh common.Duration `json:"refresh" happydomain:"label=Slave Refresh Time,required,description=The time interval before the zone should be refreshed by others name servers than the primary."`
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Retry common.Duration `json:"retry" happydomain:"label=Retry Interval on failed refresh,required,description=The time interval a slave name server should elapse before a failed refresh should be retried."`
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Expire common.Duration `json:"expire" happydomain:"label=Authoritative Expiry,required,description=Time value that specifies the upper limit on the time interval that can elapse before the zone is no longer authoritative."`
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Negttl common.Duration `json:"nxttl" happydomain:"label=Negative Caching Time,required,description=Maximal time a resolver should cache a negative authoritative answer (such as NXDOMAIN ...)."`
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NameServers []string `json:"ns" happydomain:"label=Zone's Name Servers"`
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}
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func (s *Origin) GetNbResources() int {
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return len(s.NameServers)
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}
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func (s *Origin) GenComment(origin string) string {
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ns := ""
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if s.NameServers != nil {
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ns = fmt.Sprintf(" + %d NS", len(s.NameServers))
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}
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return fmt.Sprintf("%s %s %d"+ns, strings.TrimSuffix(s.Ns, "."+origin), strings.TrimSuffix(s.Mbox, "."+origin), s.Serial)
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}
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func (s *Origin) GenRRs(domain string, ttl uint32, origin string) (rrs []dns.RR) {
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rrs = append(rrs, &dns.SOA{
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Hdr: dns.RR_Header{
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Name: utils.DomainJoin(domain),
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Rrtype: dns.TypeSOA,
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Class: dns.ClassINET,
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Ttl: ttl,
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},
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Ns: utils.DomainFQDN(s.Ns, origin),
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Mbox: utils.DomainFQDN(s.Mbox, origin),
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Serial: s.Serial,
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Refresh: uint32(s.Refresh.Seconds()),
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Retry: uint32(s.Retry.Seconds()),
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Expire: uint32(s.Expire.Seconds()),
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Minttl: uint32(s.Negttl.Seconds()),
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})
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for _, ns := range s.NameServers {
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rrs = append(rrs, &dns.NS{
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Hdr: dns.RR_Header{
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Name: utils.DomainJoin(domain),
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Rrtype: dns.TypeNS,
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Class: dns.ClassINET,
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Ttl: ttl,
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},
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Ns: utils.DomainFQDN(ns, origin),
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})
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}
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return
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}
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func origin_analyze(a *svcs.Analyzer) error {
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for _, record := range a.SearchRR(svcs.AnalyzerRecordFilter{Type: dns.TypeSOA}) {
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if soa, ok := record.(*dns.SOA); ok {
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origin := &Origin{
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Ns: soa.Ns,
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Mbox: soa.Mbox,
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Serial: soa.Serial,
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Refresh: common.Duration(time.Duration(soa.Refresh) * time.Second),
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Retry: common.Duration(time.Duration(soa.Retry) * time.Second),
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Expire: common.Duration(time.Duration(soa.Expire) * time.Second),
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Negttl: common.Duration(time.Duration(soa.Minttl) * time.Second),
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}
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a.UseRR(
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record,
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soa.Header().Name,
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origin,
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)
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for _, record := range a.SearchRR(svcs.AnalyzerRecordFilter{Type: dns.TypeNS, Domain: soa.Header().Name}) {
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if ns, ok := record.(*dns.NS); ok {
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origin.NameServers = append(origin.NameServers, ns.Ns)
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a.UseRR(
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record,
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ns.Header().Name,
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origin,
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)
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}
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}
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}
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}
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return nil
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}
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func init() {
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svcs.RegisterService(
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func() happydns.Service {
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return &Origin{}
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},
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origin_analyze,
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svcs.ServiceInfos{
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Name: "Origin",
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Description: "This is the root of your domain.",
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Family: svcs.Abstract,
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Categories: []string{
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"internal",
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},
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Restrictions: svcs.ServiceRestrictions{
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RootOnly: true,
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Single: true,
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NeedTypes: []uint16{
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dns.TypeSOA,
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},
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},
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},
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0,
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)
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}
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