Migrate to go-acme/lego.

vendor/github.com/go-acme/lego/providers/dns/dyn/client.go

@@ -0,0 +1,146 @@
+package dyn
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
+const defaultBaseURL = "https://api.dynect.net/REST"
+
+type dynResponse struct {
+	// One of 'success', 'failure', or 'incomplete'
+	Status string `json:"status"`
+
+	// The structure containing the actual results of the request
+	Data json.RawMessage `json:"data"`
+
+	// The ID of the job that was created in response to a request.
+	JobID int `json:"job_id"`
+
+	// A list of zero or more messages
+	Messages json.RawMessage `json:"msgs"`
+}
+
+type credentials struct {
+	Customer string `json:"customer_name"`
+	User     string `json:"user_name"`
+	Pass     string `json:"password"`
+}
+
+type session struct {
+	Token   string `json:"token"`
+	Version string `json:"version"`
+}
+
+type publish struct {
+	Publish bool   `json:"publish"`
+	Notes   string `json:"notes"`
+}
+
+// Starts a new Dyn API Session. Authenticates using customerName, userName,
+// password and receives a token to be used in for subsequent requests.
+func (d *DNSProvider) login() error {
+	payload := &credentials{Customer: d.config.CustomerName, User: d.config.UserName, Pass: d.config.Password}
+	dynRes, err := d.sendRequest(http.MethodPost, "Session", payload)
+	if err != nil {
+		return err
+	}
+
+	var s session
+	err = json.Unmarshal(dynRes.Data, &s)
+	if err != nil {
+		return err
+	}
+
+	d.token = s.Token
+
+	return nil
+}
+
+// Destroys Dyn Session
+func (d *DNSProvider) logout() error {
+	if len(d.token) == 0 {
+		// nothing to do
+		return nil
+	}
+
+	url := fmt.Sprintf("%s/Session", defaultBaseURL)
+	req, err := http.NewRequest(http.MethodDelete, url, nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Auth-Token", d.token)
+
+	resp, err := d.config.HTTPClient.Do(req)
+	if err != nil {
+		return err
+	}
+	resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("API request failed to delete session with HTTP status code %d", resp.StatusCode)
+	}
+
+	d.token = ""
+
+	return nil
+}
+
+func (d *DNSProvider) publish(zone, notes string) error {
+	pub := &publish{Publish: true, Notes: notes}
+	resource := fmt.Sprintf("Zone/%s/", zone)
+
+	_, err := d.sendRequest(http.MethodPut, resource, pub)
+	return err
+}
+
+func (d *DNSProvider) sendRequest(method, resource string, payload interface{}) (*dynResponse, error) {
+	url := fmt.Sprintf("%s/%s", defaultBaseURL, resource)
+
+	body, err := json.Marshal(payload)
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest(method, url, bytes.NewReader(body))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	if len(d.token) > 0 {
+		req.Header.Set("Auth-Token", d.token)
+	}
+
+	resp, err := d.config.HTTPClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 500 {
+		return nil, fmt.Errorf("API request failed with HTTP status code %d", resp.StatusCode)
+	}
+
+	var dynRes dynResponse
+	err = json.NewDecoder(resp.Body).Decode(&dynRes)
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("API request failed with HTTP status code %d: %s", resp.StatusCode, dynRes.Messages)
+	} else if resp.StatusCode == 307 {
+		// TODO add support for HTTP 307 response and long running jobs
+		return nil, fmt.Errorf("API request returned HTTP 307. This is currently unsupported")
+	}
+
+	if dynRes.Status == "failure" {
+		// TODO add better error handling
+		return nil, fmt.Errorf("API request failed: %s", dynRes.Messages)
+	}
+
+	return &dynRes, nil
+}

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

@@ -0,0 +1,157 @@
+// Package dyn implements a DNS provider for solving the DNS-01 challenge using Dyn Managed DNS.
+package dyn
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"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 {
+	CustomerName       string
+	UserName           string
+	Password           string
+	HTTPClient         *http.Client
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	TTL                int
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		TTL:                env.GetOrDefaultInt("DYN_TTL", dns01.DefaultTTL),
+		PropagationTimeout: env.GetOrDefaultSecond("DYN_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
+		PollingInterval:    env.GetOrDefaultSecond("DYN_POLLING_INTERVAL", dns01.DefaultPollingInterval),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("DYN_HTTP_TIMEOUT", 10*time.Second),
+		},
+	}
+}
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface that uses
+// Dyn's Managed DNS API to manage TXT records for a domain.
+type DNSProvider struct {
+	config *Config
+	token  string
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for Dyn DNS.
+// Credentials must be passed in the environment variables:
+// DYN_CUSTOMER_NAME, DYN_USER_NAME and DYN_PASSWORD.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("DYN_CUSTOMER_NAME", "DYN_USER_NAME", "DYN_PASSWORD")
+	if err != nil {
+		return nil, fmt.Errorf("dyn: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.CustomerName = values["DYN_CUSTOMER_NAME"]
+	config.UserName = values["DYN_USER_NAME"]
+	config.Password = values["DYN_PASSWORD"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for Dyn DNS
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("dyn: the configuration of the DNS provider is nil")
+	}
+
+	if config.CustomerName == "" || config.UserName == "" || config.Password == "" {
+		return nil, fmt.Errorf("dyn: credentials missing")
+	}
+
+	return &DNSProvider{config: config}, nil
+}
+
+// Present creates a TXT record using the specified parameters
+func (d *DNSProvider) Present(domain, token, keyAuth string) error {
+	fqdn, value := dns01.GetRecord(domain, keyAuth)
+
+	authZone, err := dns01.FindZoneByFqdn(fqdn)
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	err = d.login()
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	data := map[string]interface{}{
+		"rdata": map[string]string{
+			"txtdata": value,
+		},
+		"ttl": strconv.Itoa(d.config.TTL),
+	}
+
+	resource := fmt.Sprintf("TXTRecord/%s/%s/", authZone, fqdn)
+	_, err = d.sendRequest(http.MethodPost, resource, data)
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	err = d.publish(authZone, "Added TXT record for ACME dns-01 challenge using lego client")
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	return d.logout()
+}
+
+// CleanUp removes the TXT record matching the specified parameters
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	fqdn, _ := dns01.GetRecord(domain, keyAuth)
+
+	authZone, err := dns01.FindZoneByFqdn(fqdn)
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	err = d.login()
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	resource := fmt.Sprintf("TXTRecord/%s/%s/", authZone, fqdn)
+	url := fmt.Sprintf("%s/%s", defaultBaseURL, resource)
+
+	req, err := http.NewRequest(http.MethodDelete, url, nil)
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Auth-Token", d.token)
+
+	resp, err := d.config.HTTPClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+	resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("dyn: API request failed to delete TXT record HTTP status code %d", resp.StatusCode)
+	}
+
+	err = d.publish(authZone, "Removed TXT record for ACME dns-01 challenge using lego client")
+	if err != nil {
+		return fmt.Errorf("dyn: %v", err)
+	}
+
+	return d.logout()
+}
+
+// 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
+}