Handle reverse zones
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// This file is part of the happyDomain (R) project.
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// Copyright (c) 2020-2024 happyDomain
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// Authors: Pierre-Olivier Mercier, et al.
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//
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// This program is offered under a commercial and under the AGPL license.
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// For commercial licensing, contact us at <contact@happydomain.org>.
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//
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// For AGPL licensing:
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package svcs
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import (
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"strings"
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"github.com/StackExchange/dnscontrol/v4/models"
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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/utils"
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)
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type PTR struct {
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Target string
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}
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func (s *PTR) GetNbResources() int {
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return 1
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}
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func (s *PTR) GenComment(origin string) string {
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return strings.TrimSuffix(s.Target, "."+origin)
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}
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func (s *PTR) GenRRs(domain string, ttl uint32, origin string) (rrs models.Records) {
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rr := utils.NewRecordConfig(domain, "PTR", ttl, origin)
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rr.SetTarget(utils.DomainFQDN(s.Target, origin))
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rrs = append(rrs, rr)
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return
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}
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func pointer_analyze(a *Analyzer) error {
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for _, record := range a.SearchRR(AnalyzerRecordFilter{Type: dns.TypePTR}) {
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if record.Type == "PTR" {
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newrr := &PTR{
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Target: strings.TrimSuffix(record.String(), "."+a.origin),
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}
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a.UseRR(record, record.NameFQDN, newrr)
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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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RegisterService(
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func() happydns.Service {
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return &PTR{}
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},
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pointer_analyze,
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ServiceInfos{
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Name: "Pointer",
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Description: "A pointer to another domain.",
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Categories: []string{
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"internal",
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},
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RecordTypes: []uint16{
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dns.TypePTR,
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},
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Restrictions: ServiceRestrictions{
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Alone: true,
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Single: true,
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NeedTypes: []uint16{
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dns.TypePTR,
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},
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},
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},
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99999998,
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)
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}
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@ -34,7 +34,7 @@
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import { deleteZoneService } from '$lib/api/zone';
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import Service from '$lib/components/domains/Service.svelte';
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import { fqdn } from '$lib/dns';
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import { fqdn, isReverseZone, unreverseDomain } from '$lib/dns';
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import type { Domain, DomainInList } from '$lib/model/domain';
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import type { ServiceCombined } from '$lib/model/service';
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import { ZoneViewGrid } from '$lib/model/usersettings';
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@ -49,12 +49,19 @@
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export let services: Array<ServiceCombined>;
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export let zoneId: string;
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let reverseZone = false;
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$: reverseZone = isReverseZone(origin.domain);
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let showResources = true;
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function isCNAME(services: Array<ServiceCombined>) {
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return services.length === 1 && services[0]._svctype === 'svcs.CNAME';
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}
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function isPTR(services: Array<ServiceCombined>) {
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return services.length === 1 && services[0]._svctype === 'svcs.PTR';
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}
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let deleteServiceInProgress = false;
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function deleteCNAME() {
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deleteServiceInProgress = true;
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@ -75,19 +82,33 @@
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}
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</script>
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{#if isCNAME(services)}
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{#if isCNAME(services) || isPTR(services)}
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<div id={dn}>
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<h2
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class="sticky-top"
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style="background: white; z-index: 1"
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>
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<span style="white-space: nowrap">
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<Icon name="link" />
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{#if isPTR(services)}
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<Icon
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name="signpost"
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title="PTR"
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/>
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{:else}
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<Icon
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name="sign-turn-right"
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title="CNAME"
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/>
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{/if}
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<span
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class="font-monospace"
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title={fqdn(dn, origin.domain)}
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>
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{fqdn(dn, origin.domain)}
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{#if reverseZone}
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{unreverseDomain(fqdn(dn, origin.domain))}
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{:else}
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{fqdn(dn, origin.domain)}
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{/if}
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</span>
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</span>
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<span style="white-space: nowrap">
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@ -131,7 +152,11 @@
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{:else}
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<Icon name="x-circle" />
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{/if}
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{$t('domains.drop-alias')}
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{#if isPTR(services)}
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{$t('domains.drop-pointer')}
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{:else}
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{$t('domains.drop-alias')}
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{/if}
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</Button>
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</h2>
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</div>
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@ -143,7 +168,7 @@
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>
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<h2
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style="white-space: nowrap; cursor: pointer;"
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class="mb-0"
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class="mb-0 text-truncate"
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on:click={() => showResources = !showResources}
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on:keypress={() => showResources = !showResources}
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>
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@ -156,7 +181,11 @@
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class="font-monospace"
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title={fqdn(dn, origin.domain)}
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>
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{fqdn(dn, origin.domain)}
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{#if reverseZone}
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{unreverseDomain(fqdn(dn, origin.domain))}
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{:else}
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{fqdn(dn, origin.domain)}
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{/if}
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</span>
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</h2>
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{#if aliases.length != 0}
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@ -242,3 +242,55 @@ export function validateDomain(dn: string, origin: string = "", hostname: boolea
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return ret;
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}
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export function isReverseZone(fqdn: string) {
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return fqdn.endsWith('in-addr.arpa.') || fqdn.endsWith('ip6.arpa.')
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}
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export function reverseDomain(ip: string) {
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let suffix = 'in-addr.arpa.';
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let fields: Array<String>;
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if (ip.indexOf(":") > 0) {
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suffix = 'ip6.arpa.';
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fields = ip.split(':');
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fields = fields.map((e) => {
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let exp_len = 4;
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if (e.length == 0) {
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exp_len = 4 * (7 - fields.length);
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}
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while (e.length < exp_len) {
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e = '0' + e;
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}
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return e;
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});
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} else {
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fields = ip.split('.');
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while (fields.length < 4) {
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const last = fields.pop();
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fields.push('0', last);
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}
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}
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return fields.reduce((a, v) => v.replace(/^0*(0|[^0].*)$/, '$1') + '.' + a, suffix);
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}
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export function unreverseDomain(dn: string) {
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let split_char = '.';
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let group = 1;
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if (dn.endsWith('ip6.arpa.')) {
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split_char = ':';
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group = 4;
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dn = dn.substring(0, dn.indexOf('.ip6.arpa.'))
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} else {
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dn = dn.substring(0, dn.indexOf('.in-addr.arpa.'))
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}
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const fields = dn.split('.');
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let ip = fields.reduce((a, v, i) => v + (i % group == 0 ? split_char : '') + a, '');
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ip = ip.substring(0, ip.length - 1);
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return ip.replace(/:(0000:)+/, '::').replace(/:0+/g, ':');
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}
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@ -102,6 +102,7 @@
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"create-new-key": "Create new {{id}} key",
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"discard": "Discard",
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"drop-alias": "Drop alias",
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"drop-pointer": "Drop pointer",
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"edit-target": "Edit target",
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"give-explicit-name": "Give an explicit name in order to easily find this service.",
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"history": "History",
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@ -102,6 +102,7 @@
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"create-new-key": "Créer une nouvelle clé {{id}}",
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"discard": "Supprimer",
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"drop-alias": "Supprimer l'alias",
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"drop-pointer": "Supprimer le pointeur",
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"edit-target": "Éditer la destination",
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"give-explicit-name": "Donnez un nom explicite afin de trouver facilement ce service.",
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"history": "Historique",
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