Cherry pick v1.7 into master

vendor/github.com/xenolf/lego/providers/dns/mydnsjp/mydnsjp.go

@@ -0,0 +1,140 @@
+// Package mydnsjp implements a DNS provider for solving the DNS-01
+// challenge using MyDNS.jp.
+package mydnsjp
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/xenolf/lego/acme"
+	"github.com/xenolf/lego/platform/config/env"
+)
+
+const defaultBaseURL = "https://www.mydns.jp/directedit.html"
+
+// Config is used to configure the creation of the DNSProvider
+type Config struct {
+	MasterID           string
+	Password           string
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	HTTPClient         *http.Client
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider
+func NewDefaultConfig() *Config {
+	return &Config{
+		PropagationTimeout: env.GetOrDefaultSecond("MYDNSJP_PROPAGATION_TIMEOUT", 2*time.Minute),
+		PollingInterval:    env.GetOrDefaultSecond("MYDNSJP_POLLING_INTERVAL", 2*time.Second),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond("MYDNSJP_HTTP_TIMEOUT", 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface
+type DNSProvider struct {
+	config *Config
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for MyDNS.jp.
+// Credentials must be passed in the environment variables: MYDNSJP_MASTER_ID and MYDNSJP_PASSWORD.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("MYDNSJP_MASTER_ID", "MYDNSJP_PASSWORD")
+	if err != nil {
+		return nil, fmt.Errorf("mydnsjp: %v", err)
+	}
+
+	config := NewDefaultConfig()
+	config.MasterID = values["MYDNSJP_MASTER_ID"]
+	config.Password = values["MYDNSJP_PASSWORD"]
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for MyDNS.jp.
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("mydnsjp: the configuration of the DNS provider is nil")
+	}
+
+	if config.MasterID == "" || config.Password == "" {
+		return nil, errors.New("mydnsjp: some credentials information are missing")
+	}
+
+	return &DNSProvider{config: config}, 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 {
+	_, value, _ := acme.DNS01Record(domain, keyAuth)
+	err := d.doRequest(domain, value, "REGIST")
+	if err != nil {
+		return fmt.Errorf("mydnsjp: %v", err)
+	}
+	return nil
+}
+
+// CleanUp removes the TXT record matching the specified parameters
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	_, value, _ := acme.DNS01Record(domain, keyAuth)
+	err := d.doRequest(domain, value, "DELETE")
+	if err != nil {
+		return fmt.Errorf("mydnsjp: %v", err)
+	}
+	return nil
+}
+
+func (d *DNSProvider) doRequest(domain, value string, cmd string) error {
+	req, err := d.buildRequest(domain, value, cmd)
+	if err != nil {
+		return err
+	}
+
+	resp, err := d.config.HTTPClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("error querying API: %v", err)
+	}
+
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 {
+		var content []byte
+		content, err = ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+
+		return fmt.Errorf("request %s failed [status code %d]: %s", req.URL, resp.StatusCode, string(content))
+	}
+
+	return nil
+}
+
+func (d *DNSProvider) buildRequest(domain, value string, cmd string) (*http.Request, error) {
+	params := url.Values{}
+	params.Set("CERTBOT_DOMAIN", domain)
+	params.Set("CERTBOT_VALIDATION", value)
+	params.Set("EDIT_CMD", cmd)
+
+	req, err := http.NewRequest(http.MethodPost, defaultBaseURL, strings.NewReader(params.Encode()))
+	if err != nil {
+		return nil, fmt.Errorf("invalid request: %v", err)
+	}
+
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.SetBasicAuth(d.config.MasterID, d.config.Password)
+
+	return req, nil
+}