mirror of
https://github.com/StackExchange/dnscontrol.git
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9812ecd9ff
* github.com/miekg/dns * Greatly simplify the logic for handling serial numbers. Related code was all over the place. Now it is abstracted into one testable method makeSoa. This simplifies code in many other places. * Update docs/_providers/bind.md: Edit old text. Add SOA description. * SOA records are now treated like any other record internally. You still can't specify them in dnsconfig.js, but that's by design. * The URL for issue 491 was wrong in many places * BIND: Clarify GENERATE_ZONEFILE message
71 lines
2 KiB
Go
71 lines
2 KiB
Go
// Package nameservers provides logic for dynamically finding nameservers for a domain, and configuring NS records for them.
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package nameservers
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import (
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"fmt"
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"strings"
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"strconv"
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"github.com/StackExchange/dnscontrol/v2/models"
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)
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// DetermineNameservers will find all nameservers we should use for a domain. It follows the following rules:
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// 1. All explicitly defined NAMESERVER records will be used.
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// 2. Each DSP declares how many nameservers to use. Default is all. 0 indicates to use none.
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func DetermineNameservers(dc *models.DomainConfig) ([]*models.Nameserver, error) {
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// always take explicit
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ns := dc.Nameservers
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for _, dnsProvider := range dc.DNSProviderInstances {
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n := dnsProvider.NumberOfNameservers
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if n == 0 {
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continue
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}
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fmt.Printf("----- Getting nameservers from: %s\n", dnsProvider.Name)
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nss, err := dnsProvider.Driver.GetNameservers(dc.Name)
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if err != nil {
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return nil, err
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}
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take := len(nss)
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if n > 0 && n < take {
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take = n
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}
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for i := 0; i < take; i++ {
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nss[i].Name = strings.TrimRight(nss[i].Name, ".")
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// FIXME(tlim): Rather than correct broken providers, we should print
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// a warning that the provider should be updated to store the FQDN
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// with no trailing dot. See also providers/namedotcom/nameservers.go
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// Bug https://github.com/StackExchange/dnscontrol/issues/491
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ns = append(ns, nss[i])
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}
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}
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return ns, nil
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}
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// AddNSRecords creates NS records on a domain corresponding to the nameservers specified.
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func AddNSRecords(dc *models.DomainConfig) {
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ttl := uint32(300)
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if ttls, ok := dc.Metadata["ns_ttl"]; ok {
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t, err := strconv.ParseUint(ttls, 10, 32)
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if err != nil {
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fmt.Printf("WARNING: ns_ttl for %s (%s) is not a valid int", dc.Name, ttls)
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} else {
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ttl = uint32(t)
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}
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}
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for _, ns := range dc.Nameservers {
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rc := &models.RecordConfig{
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Type: "NS",
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Metadata: map[string]string{},
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TTL: ttl,
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}
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rc.SetLabel("@", dc.Name)
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t := ns.Name
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if !strings.HasSuffix(t, ".") {
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t += "."
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}
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rc.SetTarget(t)
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dc.Records = append(dc.Records, rc)
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}
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}
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