Update lego.

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

@@ -0,0 +1,165 @@
+// Package easydns implements a DNS provider for solving the DNS-01 challenge using EasyDNS API.
+package easydns
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/miekg/dns"
+
+	"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 {
+	Endpoint           *url.URL
+	Token              string
+	Key                string
+	TTL                int
+	HTTPClient         *http.Client
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	SequenceInterval   time.Duration
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		PropagationTimeout: env.GetOrDefaultSecond("EASYDNS_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
+		SequenceInterval:   env.GetOrDefaultSecond("EASYDNS_SEQUENCE_INTERVAL", dns01.DefaultPropagationTimeout),
+		PollingInterval:    env.GetOrDefaultSecond("EASYDNS_POLLING_INTERVAL", dns01.DefaultPollingInterval),
+		TTL:                env.GetOrDefaultInt("EASYDNS_TTL", dns01.DefaultTTL),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("EASYDNS_HTTP_TIMEOUT", 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider describes a provider for acme-proxy
+type DNSProvider struct {
+	config      *Config
+	recordIDs   map[string]string
+	recordIDsMu sync.Mutex
+}
+
+// NewDNSProvider returns a DNSProvider instance.
+func NewDNSProvider() (*DNSProvider, error) {
+	config := NewDefaultConfig()
+
+	endpoint, err := url.Parse(env.GetOrDefaultString("EASYDNS_ENDPOINT", defaultEndpoint))
+	if err != nil {
+		return nil, fmt.Errorf("easydns: %v", err)
+	}
+	config.Endpoint = endpoint
+
+	values, err := env.Get("EASYDNS_TOKEN", "EASYDNS_KEY")
+	if err != nil {
+		return nil, fmt.Errorf("easydns: %v", err)
+	}
+
+	config.Token = values["EASYDNS_TOKEN"]
+	config.Key = values["EASYDNS_KEY"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider .
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("easydns: the configuration of the DNS provider is nil")
+	}
+
+	if config.Token == "" {
+		return nil, errors.New("easydns: the API token is missing")
+	}
+
+	if config.Key == "" {
+		return nil, errors.New("easydns: the API key is missing")
+	}
+
+	return &DNSProvider{config: config, recordIDs: map[string]string{}}, nil
+}
+
+// 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)
+
+	apiHost, apiDomain := splitFqdn(fqdn)
+	record := &zoneRecord{
+		Domain: apiDomain,
+		Host:   apiHost,
+		Type:   "TXT",
+		Rdata:  value,
+		TTL:    strconv.Itoa(d.config.TTL),
+		Prio:   "0",
+	}
+
+	recordID, err := d.addRecord(apiDomain, record)
+	if err != nil {
+		return fmt.Errorf("easydns: error adding zone record: %v", err)
+	}
+
+	key := getMapKey(fqdn, value)
+
+	d.recordIDsMu.Lock()
+	d.recordIDs[key] = recordID
+	d.recordIDsMu.Unlock()
+
+	return nil
+}
+
+// CleanUp removes the TXT record matching the specified parameters
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	fqdn, challenge := dns01.GetRecord(domain, keyAuth)
+
+	key := getMapKey(fqdn, challenge)
+	recordID, exists := d.recordIDs[key]
+	if !exists {
+		return nil
+	}
+
+	_, apiDomain := splitFqdn(fqdn)
+	err := d.deleteRecord(apiDomain, recordID)
+
+	d.recordIDsMu.Lock()
+	defer delete(d.recordIDs, key)
+	d.recordIDsMu.Unlock()
+
+	if err != nil {
+		return fmt.Errorf("easydns: %v", err)
+	}
+
+	return 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
+}
+
+// Sequential All DNS challenges for this provider will be resolved sequentially.
+// Returns the interval between each iteration.
+func (d *DNSProvider) Sequential() time.Duration {
+	return d.config.SequenceInterval
+}
+
+func splitFqdn(fqdn string) (host, domain string) {
+	parts := dns.SplitDomainName(fqdn)
+	length := len(parts)
+
+	host = strings.Join(parts[0:length-2], ".")
+	domain = strings.Join(parts[length-2:length], ".")
+	return
+}
+
+func getMapKey(fqdn, value string) string {
+	return fqdn + "|" + value
+}