Migrate to go-acme/lego.

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

@@ -0,0 +1,73 @@
+package dreamhost
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/url"
+
+	"github.com/go-acme/lego/log"
+)
+
+const (
+	defaultBaseURL = "https://api.dreamhost.com"
+
+	cmdAddRecord    = "dns-add_record"
+	cmdRemoveRecord = "dns-remove_record"
+)
+
+type apiResponse struct {
+	Data   string `json:"data"`
+	Result string `json:"result"`
+}
+
+func (d *DNSProvider) buildQuery(action, domain, txt string) (*url.URL, error) {
+	u, err := url.Parse(d.config.BaseURL)
+	if err != nil {
+		return nil, err
+	}
+
+	query := u.Query()
+	query.Set("key", d.config.APIKey)
+	query.Set("cmd", action)
+	query.Set("format", "json")
+	query.Set("record", domain)
+	query.Set("type", "TXT")
+	query.Set("value", txt)
+	query.Set("comment", url.QueryEscape("Managed By lego"))
+	u.RawQuery = query.Encode()
+
+	return u, nil
+}
+
+// updateTxtRecord will either add or remove a TXT record.
+// action is either cmdAddRecord or cmdRemoveRecord
+func (d *DNSProvider) updateTxtRecord(u fmt.Stringer) error {
+	resp, err := d.config.HTTPClient.Get(u.String())
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("request failed with HTTP status code %d", resp.StatusCode)
+	}
+
+	raw, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to read body: %v", err)
+	}
+
+	var response apiResponse
+	err = json.Unmarshal(raw, &response)
+	if err != nil {
+		return fmt.Errorf("unable to decode API server response: %v: %s", err, string(raw))
+	}
+
+	if response.Result == "error" {
+		return fmt.Errorf("add TXT record failed: %s", response.Data)
+	}
+
+	log.Infof("dreamhost: %s", response.Data)
+	return nil
+}

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

@@ -0,0 +1,111 @@
+// Package dreamhost implements a DNS provider for solving the DNS-01 challenge using DreamHost.
+// See https://help.dreamhost.com/hc/en-us/articles/217560167-API_overview
+// and https://help.dreamhost.com/hc/en-us/articles/217555707-DNS-API-commands for the API spec.
+package dreamhost
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"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
+	APIKey             string
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	HTTPClient         *http.Client
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		BaseURL:            defaultBaseURL,
+		PropagationTimeout: env.GetOrDefaultSecond("DREAMHOST_PROPAGATION_TIMEOUT", 60*time.Minute),
+		PollingInterval:    env.GetOrDefaultSecond("DREAMHOST_POLLING_INTERVAL", 1*time.Minute),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("DREAMHOST_HTTP_TIMEOUT", 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider adds and removes the record for the DNS challenge
+type DNSProvider struct {
+	config *Config
+}
+
+// NewDNSProvider returns a new DNS provider using
+// environment variable DREAMHOST_TOKEN for adding and removing the DNS record.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("DREAMHOST_API_KEY")
+	if err != nil {
+		return nil, fmt.Errorf("dreamhost: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.APIKey = values["DREAMHOST_API_KEY"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for DreamHost.
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("dreamhost: the configuration of the DNS provider is nil")
+	}
+
+	if config.APIKey == "" {
+		return nil, errors.New("dreamhost: credentials missing")
+	}
+
+	if config.BaseURL == "" {
+		config.BaseURL = defaultBaseURL
+	}
+
+	return &DNSProvider{config: config}, 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)
+	record := dns01.UnFqdn(fqdn)
+
+	u, err := d.buildQuery(cmdAddRecord, record, value)
+	if err != nil {
+		return fmt.Errorf("dreamhost: %v", err)
+	}
+
+	err = d.updateTxtRecord(u)
+	if err != nil {
+		return fmt.Errorf("dreamhost: %v", err)
+	}
+	return nil
+}
+
+// CleanUp clears DreamHost TXT record
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	fqdn, value := dns01.GetRecord(domain, keyAuth)
+	record := dns01.UnFqdn(fqdn)
+
+	u, err := d.buildQuery(cmdRemoveRecord, record, value)
+	if err != nil {
+		return fmt.Errorf("dreamhost: %v", err)
+	}
+
+	err = d.updateTxtRecord(u)
+	if err != nil {
+		return fmt.Errorf("dreamhost: %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
+}