2018-12-06 23:50:17 +02:00
|
|
|
// Package alidns implements a DNS provider for solving the DNS-01 challenge using Alibaba Cloud DNS.
|
2019-03-11 18:56:48 +02:00
|
|
|
package alidns
|
2018-09-08 15:17:23 +02:00
|
|
|
|
|
|
|
import (
|
2018-09-15 19:07:24 +02:00
|
|
|
"errors"
|
2018-09-08 15:17:23 +02:00
|
|
|
"fmt"
|
|
|
|
"strings"
|
2018-09-15 19:07:24 +02:00
|
|
|
"time"
|
2018-09-08 15:17:23 +02:00
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
"github.com/aliyun/alibaba-cloud-sdk-go/sdk"
|
|
|
|
"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
|
2018-09-08 15:17:23 +02:00
|
|
|
"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
|
|
|
|
"github.com/aliyun/alibaba-cloud-sdk-go/services/alidns"
|
2020-09-02 03:20:01 +02:00
|
|
|
"github.com/go-acme/lego/v4/challenge/dns01"
|
|
|
|
"github.com/go-acme/lego/v4/platform/config/env"
|
2020-03-19 10:26:48 +02:00
|
|
|
"golang.org/x/net/idna"
|
2018-09-08 15:17:23 +02:00
|
|
|
)
|
|
|
|
|
|
|
|
const defaultRegionID = "cn-hangzhou"
|
|
|
|
|
2020-03-12 00:51:10 +02:00
|
|
|
// Environment variables names.
|
|
|
|
const (
|
|
|
|
envNamespace = "ALICLOUD_"
|
|
|
|
|
|
|
|
EnvAccessKey = envNamespace + "ACCESS_KEY"
|
|
|
|
EnvSecretKey = envNamespace + "SECRET_KEY"
|
|
|
|
EnvRegionID = envNamespace + "REGION_ID"
|
|
|
|
|
|
|
|
EnvTTL = envNamespace + "TTL"
|
|
|
|
EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
|
|
|
|
EnvPollingInterval = envNamespace + "POLLING_INTERVAL"
|
|
|
|
EnvHTTPTimeout = envNamespace + "HTTP_TIMEOUT"
|
|
|
|
)
|
|
|
|
|
2020-05-08 19:35:25 +02:00
|
|
|
// Config is used to configure the creation of the DNSProvider.
|
2018-09-15 19:07:24 +02:00
|
|
|
type Config struct {
|
|
|
|
APIKey string
|
|
|
|
SecretKey string
|
|
|
|
RegionID string
|
|
|
|
PropagationTimeout time.Duration
|
|
|
|
PollingInterval time.Duration
|
|
|
|
TTL int
|
|
|
|
HTTPTimeout time.Duration
|
|
|
|
}
|
|
|
|
|
2020-05-08 19:35:25 +02:00
|
|
|
// NewDefaultConfig returns a default configuration for the DNSProvider.
|
2018-09-15 19:07:24 +02:00
|
|
|
func NewDefaultConfig() *Config {
|
|
|
|
return &Config{
|
2020-03-12 00:51:10 +02:00
|
|
|
TTL: env.GetOrDefaultInt(EnvTTL, 600),
|
|
|
|
PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, dns01.DefaultPropagationTimeout),
|
|
|
|
PollingInterval: env.GetOrDefaultSecond(EnvPollingInterval, dns01.DefaultPollingInterval),
|
|
|
|
HTTPTimeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 10*time.Second),
|
2018-09-15 19:07:24 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-05-08 19:35:25 +02:00
|
|
|
// DNSProvider implements the challenge.Provider interface.
|
2018-09-08 15:17:23 +02:00
|
|
|
type DNSProvider struct {
|
2018-09-15 19:07:24 +02:00
|
|
|
config *Config
|
2018-09-08 15:17:23 +02:00
|
|
|
client *alidns.Client
|
|
|
|
}
|
|
|
|
|
|
|
|
// NewDNSProvider returns a DNSProvider instance configured for Alibaba Cloud DNS.
|
2020-05-08 19:35:25 +02:00
|
|
|
// Credentials must be passed in the environment variables:
|
|
|
|
// ALICLOUD_ACCESS_KEY and ALICLOUD_SECRET_KEY.
|
2018-09-08 15:17:23 +02:00
|
|
|
func NewDNSProvider() (*DNSProvider, error) {
|
2020-03-12 00:51:10 +02:00
|
|
|
values, err := env.Get(EnvAccessKey, EnvSecretKey)
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return nil, fmt.Errorf("alicloud: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
config := NewDefaultConfig()
|
2020-03-12 00:51:10 +02:00
|
|
|
config.APIKey = values[EnvAccessKey]
|
|
|
|
config.SecretKey = values[EnvSecretKey]
|
|
|
|
config.RegionID = env.GetOrFile(EnvRegionID)
|
2018-09-08 15:17:23 +02:00
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
return NewDNSProviderConfig(config)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
// NewDNSProviderConfig return a DNSProvider instance configured for alidns.
|
|
|
|
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
|
|
|
|
if config == nil {
|
|
|
|
return nil, errors.New("alicloud: the configuration of the DNS provider is nil")
|
|
|
|
}
|
|
|
|
|
|
|
|
if config.APIKey == "" || config.SecretKey == "" {
|
|
|
|
return nil, fmt.Errorf("alicloud: credentials missing")
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2021-03-04 21:16:59 +02:00
|
|
|
if config.RegionID == "" {
|
2018-09-15 19:07:24 +02:00
|
|
|
config.RegionID = defaultRegionID
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
conf := sdk.NewConfig().WithTimeout(config.HTTPTimeout)
|
|
|
|
credential := credentials.NewAccessKeyCredential(config.APIKey, config.SecretKey)
|
|
|
|
|
|
|
|
client, err := alidns.NewClientWithOptions(config.RegionID, conf, credential)
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return nil, fmt.Errorf("alicloud: credentials failed: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-09-15 19:07:24 +02:00
|
|
|
return &DNSProvider{config: config, client: client}, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// Timeout returns the timeout and interval to use when checking for DNS propagation.
|
|
|
|
// Adjusting here to cope with spikes in propagation times.
|
|
|
|
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
|
|
|
|
return d.config.PropagationTimeout, d.config.PollingInterval
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-09-24 21:07:20 +02:00
|
|
|
// Present creates a TXT record to fulfill the dns-01 challenge.
|
2018-09-08 15:17:23 +02:00
|
|
|
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
|
2018-12-06 23:50:17 +02:00
|
|
|
fqdn, value := dns01.GetRecord(domain, keyAuth)
|
2018-09-08 15:17:23 +02:00
|
|
|
|
2019-10-25 01:27:40 +02:00
|
|
|
zoneName, err := d.getHostedZone(domain)
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return fmt.Errorf("alicloud: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2020-03-19 10:26:48 +02:00
|
|
|
recordAttributes, err := d.newTxtRecord(zoneName, fqdn, value)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2018-09-08 15:17:23 +02:00
|
|
|
|
|
|
|
_, err = d.client.AddDomainRecord(recordAttributes)
|
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return fmt.Errorf("alicloud: API call failed: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// CleanUp removes the TXT record matching the specified parameters.
|
|
|
|
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
|
2018-12-06 23:50:17 +02:00
|
|
|
fqdn, _ := dns01.GetRecord(domain, keyAuth)
|
2018-09-08 15:17:23 +02:00
|
|
|
|
|
|
|
records, err := d.findTxtRecords(domain, fqdn)
|
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return fmt.Errorf("alicloud: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2019-10-25 01:27:40 +02:00
|
|
|
_, err = d.getHostedZone(domain)
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return fmt.Errorf("alicloud: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
for _, rec := range records {
|
|
|
|
request := alidns.CreateDeleteDomainRecordRequest()
|
|
|
|
request.RecordId = rec.RecordId
|
|
|
|
_, err = d.client.DeleteDomainRecord(request)
|
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return fmt.Errorf("alicloud: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2019-10-25 01:27:40 +02:00
|
|
|
func (d *DNSProvider) getHostedZone(domain string) (string, error) {
|
2018-09-08 15:17:23 +02:00
|
|
|
request := alidns.CreateDescribeDomainsRequest()
|
2018-12-20 12:52:34 +02:00
|
|
|
|
2021-03-10 11:42:00 +02:00
|
|
|
var domains []alidns.DomainInDescribeDomains
|
2018-12-20 12:52:34 +02:00
|
|
|
startPage := 1
|
|
|
|
|
|
|
|
for {
|
|
|
|
request.PageNumber = requests.NewInteger(startPage)
|
|
|
|
|
|
|
|
response, err := d.client.DescribeDomains(request)
|
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return "", fmt.Errorf("API call failed: %w", err)
|
2018-12-20 12:52:34 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
domains = append(domains, response.Domains.Domain...)
|
|
|
|
|
2019-01-24 20:56:19 +02:00
|
|
|
if response.PageNumber*response.PageSize >= response.TotalCount {
|
2018-12-20 12:52:34 +02:00
|
|
|
break
|
|
|
|
}
|
|
|
|
|
|
|
|
startPage++
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2018-12-06 23:50:17 +02:00
|
|
|
authZone, err := dns01.FindZoneByFqdn(dns01.ToFqdn(domain))
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
2019-10-25 01:27:40 +02:00
|
|
|
return "", err
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2021-03-10 11:42:00 +02:00
|
|
|
var hostedZone alidns.DomainInDescribeDomains
|
2018-12-20 12:52:34 +02:00
|
|
|
for _, zone := range domains {
|
2020-03-19 10:26:48 +02:00
|
|
|
if zone.DomainName == dns01.UnFqdn(authZone) || zone.PunyCode == dns01.UnFqdn(authZone) {
|
2018-09-08 15:17:23 +02:00
|
|
|
hostedZone = zone
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if hostedZone.DomainId == "" {
|
2019-10-25 01:27:40 +02:00
|
|
|
return "", fmt.Errorf("zone %s not found in AliDNS for domain %s", authZone, domain)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
2019-10-25 01:27:40 +02:00
|
|
|
|
|
|
|
return hostedZone.DomainName, nil
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2020-03-19 10:26:48 +02:00
|
|
|
func (d *DNSProvider) newTxtRecord(zone, fqdn, value string) (*alidns.AddDomainRecordRequest, error) {
|
2018-09-08 15:17:23 +02:00
|
|
|
request := alidns.CreateAddDomainRecordRequest()
|
|
|
|
request.Type = "TXT"
|
|
|
|
request.DomainName = zone
|
2020-03-19 10:26:48 +02:00
|
|
|
|
|
|
|
var err error
|
2020-06-27 14:28:59 +02:00
|
|
|
request.RR, err = extractRecordName(fqdn, zone)
|
2020-03-19 10:26:48 +02:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2018-09-08 15:17:23 +02:00
|
|
|
request.Value = value
|
2018-09-15 19:07:24 +02:00
|
|
|
request.TTL = requests.NewInteger(d.config.TTL)
|
2020-03-19 10:26:48 +02:00
|
|
|
|
|
|
|
return request, nil
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
func (d *DNSProvider) findTxtRecords(domain, fqdn string) ([]alidns.Record, error) {
|
2019-10-25 01:27:40 +02:00
|
|
|
zoneName, err := d.getHostedZone(domain)
|
2018-09-08 15:17:23 +02:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
request := alidns.CreateDescribeDomainRecordsRequest()
|
|
|
|
request.DomainName = zoneName
|
|
|
|
request.PageSize = requests.NewInteger(500)
|
|
|
|
|
|
|
|
var records []alidns.Record
|
|
|
|
|
|
|
|
result, err := d.client.DescribeDomainRecords(request)
|
|
|
|
if err != nil {
|
2020-02-27 20:14:46 +02:00
|
|
|
return records, fmt.Errorf("API call has failed: %w", err)
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
|
|
|
|
2020-06-27 14:28:59 +02:00
|
|
|
recordName, err := extractRecordName(fqdn, zoneName)
|
2020-03-19 10:26:48 +02:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2018-09-08 15:17:23 +02:00
|
|
|
for _, record := range result.DomainRecords.Record {
|
|
|
|
if record.RR == recordName {
|
|
|
|
records = append(records, record)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return records, nil
|
|
|
|
}
|
|
|
|
|
2020-06-27 14:28:59 +02:00
|
|
|
func extractRecordName(fqdn, zone string) (string, error) {
|
|
|
|
asciiDomain, err := idna.ToASCII(zone)
|
2020-03-19 10:26:48 +02:00
|
|
|
if err != nil {
|
|
|
|
return "", fmt.Errorf("fail to convert punycode: %w", err)
|
|
|
|
}
|
|
|
|
|
2018-12-06 23:50:17 +02:00
|
|
|
name := dns01.UnFqdn(fqdn)
|
2020-03-19 10:26:48 +02:00
|
|
|
if idx := strings.Index(name, "."+asciiDomain); idx != -1 {
|
|
|
|
return name[:idx], nil
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|
2020-03-19 10:26:48 +02:00
|
|
|
return name, nil
|
2018-09-08 15:17:23 +02:00
|
|
|
}
|