Migrate to go-acme/lego.

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

@@ -0,0 +1,182 @@
+// Package pdns implements a DNS provider for solving the DNS-01 challenge using PowerDNS nameserver.
+package pdns
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/go-acme/lego/challenge/dns01"
+	"github.com/go-acme/lego/log"
+	"github.com/go-acme/lego/platform/config/env"
+)
+
+// Config is used to configure the creation of the DNSProvider
+type Config struct {
+	APIKey             string
+	Host               *url.URL
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	TTL                int
+	HTTPClient         *http.Client
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		TTL:                env.GetOrDefaultInt("PDNS_TTL", dns01.DefaultTTL),
+		PropagationTimeout: env.GetOrDefaultSecond("PDNS_PROPAGATION_TIMEOUT", 120*time.Second),
+		PollingInterval:    env.GetOrDefaultSecond("PDNS_POLLING_INTERVAL", 2*time.Second),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("PDNS_HTTP_TIMEOUT", 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface
+type DNSProvider struct {
+	apiVersion int
+	config     *Config
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for pdns.
+// Credentials must be passed in the environment variable:
+// PDNS_API_URL and PDNS_API_KEY.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("PDNS_API_KEY", "PDNS_API_URL")
+	if err != nil {
+		return nil, fmt.Errorf("pdns: %v", err)
+	}
+
+	hostURL, err := url.Parse(values["PDNS_API_URL"])
+	if err != nil {
+		return nil, fmt.Errorf("pdns: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.Host = hostURL
+	config.APIKey = values["PDNS_API_KEY"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for pdns.
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("pdns: the configuration of the DNS provider is nil")
+	}
+
+	if config.APIKey == "" {
+		return nil, fmt.Errorf("pdns: API key missing")
+	}
+
+	if config.Host == nil || config.Host.Host == "" {
+		return nil, fmt.Errorf("pdns: API URL missing")
+	}
+
+	d := &DNSProvider{config: config}
+
+	apiVersion, err := d.getAPIVersion()
+	if err != nil {
+		log.Warnf("pdns: failed to get API version %v", err)
+	}
+	d.apiVersion = apiVersion
+
+	return d, 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)
+
+	zone, err := d.getHostedZone(fqdn)
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+
+	name := fqdn
+
+	// pre-v1 API wants non-fqdn
+	if d.apiVersion == 0 {
+		name = dns01.UnFqdn(fqdn)
+	}
+
+	rec := Record{
+		Content:  "\"" + value + "\"",
+		Disabled: false,
+
+		// pre-v1 API
+		Type: "TXT",
+		Name: name,
+		TTL:  d.config.TTL,
+	}
+
+	rrsets := rrSets{
+		RRSets: []rrSet{
+			{
+				Name:       name,
+				ChangeType: "REPLACE",
+				Type:       "TXT",
+				Kind:       "Master",
+				TTL:        d.config.TTL,
+				Records:    []Record{rec},
+			},
+		},
+	}
+
+	body, err := json.Marshal(rrsets)
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+
+	_, err = d.sendRequest(http.MethodPatch, zone.URL, bytes.NewReader(body))
+	if err != nil {
+		return fmt.Errorf("pdns: %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)
+
+	zone, err := d.getHostedZone(fqdn)
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+
+	set, err := d.findTxtRecord(fqdn)
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+
+	rrsets := rrSets{
+		RRSets: []rrSet{
+			{
+				Name:       set.Name,
+				Type:       set.Type,
+				ChangeType: "DELETE",
+			},
+		},
+	}
+	body, err := json.Marshal(rrsets)
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+
+	_, err = d.sendRequest(http.MethodPatch, zone.URL, bytes.NewReader(body))
+	if err != nil {
+		return fmt.Errorf("pdns: %v", err)
+	}
+	return nil
+}