forked from TrueCloudLab/lego
114 lines
2.4 KiB
Go
114 lines
2.4 KiB
Go
package sakuracloud
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import (
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"context"
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"fmt"
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"strings"
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"sync"
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"github.com/go-acme/lego/v4/challenge/dns01"
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"github.com/sacloud/iaas-api-go"
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"github.com/sacloud/iaas-api-go/search"
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)
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// This mutex is required for concurrent updates.
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// see: https://github.com/go-acme/lego/pull/850
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var mu sync.Mutex
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func (d *DNSProvider) addTXTRecord(fqdn, domain, value string, ttl int) error {
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mu.Lock()
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defer mu.Unlock()
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zone, err := d.getHostedZone(domain)
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if err != nil {
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return fmt.Errorf("%w", err)
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}
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name := extractRecordName(fqdn, zone.Name)
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records := append(zone.Records, &iaas.DNSRecord{
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Name: name,
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Type: "TXT",
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RData: value,
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TTL: ttl,
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})
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_, err = d.client.UpdateSettings(context.Background(), zone.ID, &iaas.DNSUpdateSettingsRequest{
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Records: records,
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SettingsHash: zone.SettingsHash,
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})
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if err != nil {
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return fmt.Errorf("API call failed: %w", err)
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}
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return nil
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}
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func (d *DNSProvider) cleanupTXTRecord(fqdn, domain, value string) error {
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mu.Lock()
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defer mu.Unlock()
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zone, err := d.getHostedZone(domain)
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if err != nil {
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return err
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}
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recordName := extractRecordName(fqdn, zone.Name)
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var updRecords iaas.DNSRecords
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for _, r := range zone.Records {
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if !(r.Name == recordName && r.Type == "TXT" && r.RData == value) {
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updRecords = append(updRecords, r)
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}
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}
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settings := &iaas.DNSUpdateSettingsRequest{
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Records: updRecords,
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SettingsHash: zone.SettingsHash,
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}
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_, err = d.client.UpdateSettings(context.Background(), zone.ID, settings)
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if err != nil {
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return fmt.Errorf("API call failed: %w", err)
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}
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return nil
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}
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func (d *DNSProvider) getHostedZone(domain string) (*iaas.DNS, error) {
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authZone, err := dns01.FindZoneByFqdn(dns01.ToFqdn(domain))
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if err != nil {
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return nil, err
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}
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zoneName := dns01.UnFqdn(authZone)
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conditions := &iaas.FindCondition{
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Filter: search.Filter{
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search.Key("Name"): search.ExactMatch(zoneName),
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},
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}
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res, err := d.client.Find(context.Background(), conditions)
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if err != nil {
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if iaas.IsNotFoundError(err) {
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return nil, fmt.Errorf("zone %s not found on SakuraCloud DNS: %w", zoneName, err)
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}
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return nil, fmt.Errorf("API call failed: %w", err)
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}
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for _, zone := range res.DNS {
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if zone.Name == zoneName {
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return zone, nil
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}
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}
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return nil, fmt.Errorf("zone %s not found", zoneName)
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}
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func extractRecordName(fqdn, zone string) string {
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name := dns01.UnFqdn(fqdn)
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if idx := strings.Index(name, "."+zone); idx != -1 {
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return name[:idx]
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}
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return name
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}
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