106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
// 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 utils
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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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)
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// SplitN splits a string into N sized string chunks.
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// This function is a copy of https://github.com/miekg/dns/blob/master/types.go#L1509
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// awaiting its exportation
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func SplitN(s string, n int) []string {
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if len(s) < n {
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return []string{s}
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}
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sx := []string{}
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p, i := 0, n
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for {
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if i <= len(s) {
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sx = append(sx, s[p:i])
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} else {
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sx = append(sx, s[p:])
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break
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}
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p, i = p+n, i+n
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}
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return sx
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}
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// IsDNSSECType returns true if the given rrtype is generally autogenerated by
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// NS server.
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func IsDNSSECType(rrtype uint16) bool {
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return rrtype == dns.TypeNSEC ||
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rrtype == dns.TypeNSEC3 ||
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rrtype == dns.TypeNSEC3PARAM ||
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rrtype == dns.TypeDNSKEY ||
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rrtype == dns.TypeRRSIG
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}
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// DomainFQDN normalizes the domain by adding the origin if it is relative (not
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// ended by .).
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func DomainFQDN(subdomain string, origin string) string {
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if subdomain == "" || subdomain[len(subdomain)-1] == '.' {
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return subdomain
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} else if subdomain == "@" {
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return origin
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} else {
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return subdomain + "." + origin
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}
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}
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// DomainJoin appends each relative domains passed as argument.
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func DomainJoin(domains ...string) (ret string) {
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for _, d := range domains {
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if d == "@" {
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break
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} else if d != "" {
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ret += "." + d
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}
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if len(ret) > 0 && ret[len(ret)-1] == '.' {
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break
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}
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}
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if len(ret) >= 1 {
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ret = ret[1:]
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}
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return
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}
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// DomainJoin appends each relative domains passed as argument.
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func NewRecordConfig(domain string, rtype string, ttl uint32, origin string) *models.RecordConfig {
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return &models.RecordConfig{
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Name: strings.TrimSuffix(strings.TrimSuffix(DomainJoin(domain), origin), "."),
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NameFQDN: strings.TrimSuffix(DomainJoin(domain), "."),
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Type: rtype,
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TTL: ttl,
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}
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}
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