Migrate to go-acme/lego.

vendor/github.com/go-acme/lego/providers/dns/alidns/alidns.go

@@ -0,0 +1,220 @@
+// Package alidns implements a DNS provider for solving the DNS-01 challenge using Alibaba Cloud DNS.
+package alidns
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk"
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
+	"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
+	"github.com/aliyun/alibaba-cloud-sdk-go/services/alidns"
+	"github.com/go-acme/lego/challenge/dns01"
+	"github.com/go-acme/lego/platform/config/env"
+)
+
+const defaultRegionID = "cn-hangzhou"
+
+// Config is used to configure the creation of the DNSProvider
+type Config struct {
+	APIKey             string
+	SecretKey          string
+	RegionID           string
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	TTL                int
+	HTTPTimeout        time.Duration
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		TTL:                env.GetOrDefaultInt("ALICLOUD_TTL", 600),
+		PropagationTimeout: env.GetOrDefaultSecond("ALICLOUD_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
+		PollingInterval:    env.GetOrDefaultSecond("ALICLOUD_POLLING_INTERVAL", dns01.DefaultPollingInterval),
+		HTTPTimeout:        env.GetOrDefaultSecond("ALICLOUD_HTTP_TIMEOUT", 10*time.Second),
+	}
+}
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface
+type DNSProvider struct {
+	config *Config
+	client *alidns.Client
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for Alibaba Cloud DNS.
+// Credentials must be passed in the environment variables: ALICLOUD_ACCESS_KEY and ALICLOUD_SECRET_KEY.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("ALICLOUD_ACCESS_KEY", "ALICLOUD_SECRET_KEY")
+	if err != nil {
+		return nil, fmt.Errorf("alicloud: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.APIKey = values["ALICLOUD_ACCESS_KEY"]
+	config.SecretKey = values["ALICLOUD_SECRET_KEY"]
+	config.RegionID = env.GetOrFile("ALICLOUD_REGION_ID")
+
+	return NewDNSProviderConfig(config)
+}
+
+// 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")
+	}
+
+	if len(config.RegionID) == 0 {
+		config.RegionID = defaultRegionID
+	}
+
+	conf := sdk.NewConfig().WithTimeout(config.HTTPTimeout)
+	credential := credentials.NewAccessKeyCredential(config.APIKey, config.SecretKey)
+
+	client, err := alidns.NewClientWithOptions(config.RegionID, conf, credential)
+	if err != nil {
+		return nil, fmt.Errorf("alicloud: credentials failed: %v", err)
+	}
+
+	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
+}
+
+// Present creates a TXT record to fulfill the dns-01 challenge.
+func (d *DNSProvider) Present(domain, token, keyAuth string) error {
+	fqdn, value := dns01.GetRecord(domain, keyAuth)
+
+	_, zoneName, err := d.getHostedZone(domain)
+	if err != nil {
+		return fmt.Errorf("alicloud: %v", err)
+	}
+
+	recordAttributes := d.newTxtRecord(zoneName, fqdn, value)
+
+	_, err = d.client.AddDomainRecord(recordAttributes)
+	if err != nil {
+		return fmt.Errorf("alicloud: API call failed: %v", err)
+	}
+	return nil
+}
+
+// CleanUp removes the TXT record matching the specified parameters.
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	fqdn, _ := dns01.GetRecord(domain, keyAuth)
+
+	records, err := d.findTxtRecords(domain, fqdn)
+	if err != nil {
+		return fmt.Errorf("alicloud: %v", err)
+	}
+
+	_, _, err = d.getHostedZone(domain)
+	if err != nil {
+		return fmt.Errorf("alicloud: %v", err)
+	}
+
+	for _, rec := range records {
+		request := alidns.CreateDeleteDomainRecordRequest()
+		request.RecordId = rec.RecordId
+		_, err = d.client.DeleteDomainRecord(request)
+		if err != nil {
+			return fmt.Errorf("alicloud: %v", err)
+		}
+	}
+	return nil
+}
+
+func (d *DNSProvider) getHostedZone(domain string) (string, string, error) {
+	request := alidns.CreateDescribeDomainsRequest()
+
+	var domains []alidns.Domain
+	startPage := 1
+
+	for {
+		request.PageNumber = requests.NewInteger(startPage)
+
+		response, err := d.client.DescribeDomains(request)
+		if err != nil {
+			return "", "", fmt.Errorf("API call failed: %v", err)
+		}
+
+		domains = append(domains, response.Domains.Domain...)
+
+		if response.PageNumber*response.PageSize >= response.TotalCount {
+			break
+		}
+
+		startPage++
+	}
+
+	authZone, err := dns01.FindZoneByFqdn(dns01.ToFqdn(domain))
+	if err != nil {
+		return "", "", err
+	}
+
+	var hostedZone alidns.Domain
+	for _, zone := range domains {
+		if zone.DomainName == dns01.UnFqdn(authZone) {
+			hostedZone = zone
+		}
+	}
+
+	if hostedZone.DomainId == "" {
+		return "", "", fmt.Errorf("zone %s not found in AliDNS for domain %s", authZone, domain)
+	}
+	return fmt.Sprintf("%v", hostedZone.DomainId), hostedZone.DomainName, nil
+}
+
+func (d *DNSProvider) newTxtRecord(zone, fqdn, value string) *alidns.AddDomainRecordRequest {
+	request := alidns.CreateAddDomainRecordRequest()
+	request.Type = "TXT"
+	request.DomainName = zone
+	request.RR = d.extractRecordName(fqdn, zone)
+	request.Value = value
+	request.TTL = requests.NewInteger(d.config.TTL)
+	return request
+}
+
+func (d *DNSProvider) findTxtRecords(domain, fqdn string) ([]alidns.Record, error) {
+	_, zoneName, err := d.getHostedZone(domain)
+	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 {
+		return records, fmt.Errorf("API call has failed: %v", err)
+	}
+
+	recordName := d.extractRecordName(fqdn, zoneName)
+	for _, record := range result.DomainRecords.Record {
+		if record.RR == recordName {
+			records = append(records, record)
+		}
+	}
+	return records, nil
+}
+
+func (d *DNSProvider) extractRecordName(fqdn, domain string) string {
+	name := dns01.UnFqdn(fqdn)
+	if idx := strings.Index(name, "."+domain); idx != -1 {
+		return name[:idx]
+	}
+	return name
+}