Migrate to go-acme/lego.

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

@@ -0,0 +1,126 @@
+// Package digitalocean implements a DNS provider for solving the DNS-01 challenge using digitalocean DNS.
+package digitalocean
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/go-acme/lego/challenge/dns01"
+	"github.com/go-acme/lego/platform/config/env"
+)
+
+// Config is used to configure the creation of the DNSProvider
+type Config struct {
+	BaseURL            string
+	AuthToken          string
+	TTL                int
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	HTTPClient         *http.Client
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		BaseURL:            defaultBaseURL,
+		TTL:                env.GetOrDefaultInt("DO_TTL", 30),
+		PropagationTimeout: env.GetOrDefaultSecond("DO_PROPAGATION_TIMEOUT", 60*time.Second),
+		PollingInterval:    env.GetOrDefaultSecond("DO_POLLING_INTERVAL", 5*time.Second),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("DO_HTTP_TIMEOUT", 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface
+// that uses DigitalOcean's REST API to manage TXT records for a domain.
+type DNSProvider struct {
+	config      *Config
+	recordIDs   map[string]int
+	recordIDsMu sync.Mutex
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for Digital
+// Ocean. Credentials must be passed in the environment variable:
+// DO_AUTH_TOKEN.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("DO_AUTH_TOKEN")
+	if err != nil {
+		return nil, fmt.Errorf("digitalocean: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.AuthToken = values["DO_AUTH_TOKEN"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for Digital Ocean.
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("digitalocean: the configuration of the DNS provider is nil")
+	}
+
+	if config.AuthToken == "" {
+		return nil, fmt.Errorf("digitalocean: credentials missing")
+	}
+
+	if config.BaseURL == "" {
+		config.BaseURL = defaultBaseURL
+	}
+
+	return &DNSProvider{
+		config:    config,
+		recordIDs: make(map[string]int),
+	}, 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 using the specified parameters
+func (d *DNSProvider) Present(domain, token, keyAuth string) error {
+	fqdn, value := dns01.GetRecord(domain, keyAuth)
+
+	respData, err := d.addTxtRecord(domain, fqdn, value)
+	if err != nil {
+		return fmt.Errorf("digitalocean: %v", err)
+	}
+
+	d.recordIDsMu.Lock()
+	d.recordIDs[fqdn] = respData.DomainRecord.ID
+	d.recordIDsMu.Unlock()
+
+	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)
+
+	// get the record's unique ID from when we created it
+	d.recordIDsMu.Lock()
+	recordID, ok := d.recordIDs[fqdn]
+	d.recordIDsMu.Unlock()
+	if !ok {
+		return fmt.Errorf("digitalocean: unknown record ID for '%s'", fqdn)
+	}
+
+	err := d.removeTxtRecord(domain, recordID)
+	if err != nil {
+		return fmt.Errorf("digitalocean: %v", err)
+	}
+
+	// Delete record ID from map
+	d.recordIDsMu.Lock()
+	delete(d.recordIDs, fqdn)
+	d.recordIDsMu.Unlock()
+
+	return nil
+}