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// Package godaddy implements a DNS provider for solving the DNS-01 challenge using godaddy DNS.
package godaddy
import (
"fmt"
"io"
"net/http"
"os"
"time"
"bytes"
"encoding/json"
"github.com/xenolf/lego/acme"
"io/ioutil"
"strings"
)
// GoDaddyAPIURL represents the API endpoint to call.
const apiURL = "https://api.godaddy.com"
// DNSProvider is an implementation of the acme.ChallengeProvider interface
type DNSProvider struct {
apiKey string
apiSecret string
}
// NewDNSProvider returns a DNSProvider instance configured for godaddy.
// Credentials must be passed in the environment variables: GODADDY_API_KEY
// and GODADDY_API_SECRET.
func NewDNSProvider() (*DNSProvider, error) {
apikey := os.Getenv("GODADDY_API_KEY")
secret := os.Getenv("GODADDY_API_SECRET")
return NewDNSProviderCredentials(apikey, secret)
}
// NewDNSProviderCredentials uses the supplied credentials to return a
// DNSProvider instance configured for godaddy.
func NewDNSProviderCredentials(apiKey, apiSecret string) (*DNSProvider, error) {
if apiKey == "" || apiSecret == "" {
return nil, fmt.Errorf("GoDaddy credentials missing")
}
return &DNSProvider{apiKey, apiSecret}, nil
}
// Timeout returns the timeout and interval to use when checking for DNS
// propagation. Adjusting here to cope with spikes in propagation times.
func (c *DNSProvider) Timeout() (timeout, interval time.Duration) {
return 120 * time.Second, 2 * time.Second
}
func (c *DNSProvider) extractRecordName(fqdn, domain string) string {
name := acme.UnFqdn(fqdn)
if idx := strings.Index(name, "."+domain); idx != -1 {
return name[:idx]
}
return name
}
// Present creates a TXT record to fulfil the dns-01 challenge
func (c *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value, ttl := acme.DNS01Record(domain, keyAuth)
domainZone, err := c.getZone(fqdn)
if err != nil {
return err
}
if ttl < 600 {
ttl = 600
}
recordName := c.extractRecordName(fqdn, domainZone)
rec := []DNSRecord{
{
Type: "TXT",
Name: recordName,
Data: value,
Ttl: ttl,
},
}
return c.updateRecords(rec, domainZone, recordName)
}
func (c *DNSProvider) updateRecords(records []DNSRecord, domainZone string, recordName string) error {
body, err := json.Marshal(records)
if err != nil {
return err
}
var resp *http.Response
resp, err = c.makeRequest("PUT", fmt.Sprintf("/v1/domains/%s/records/TXT/%s", domainZone, recordName), bytes.NewReader(body))
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
bodyBytes, _ := ioutil.ReadAll(resp.Body)
return fmt.Errorf("Could not create record %v; Status: %v; Body: %s\n", string(body), resp.StatusCode, string(bodyBytes))
}
return nil
}
// CleanUp sets null value in the TXT DNS record as GoDaddy has no proper DELETE record method
func (c *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
domainZone, err := c.getZone(fqdn)
if err != nil {
return err
}
recordName := c.extractRecordName(fqdn, domainZone)
rec := []DNSRecord{
{
Type: "TXT",
Name: recordName,
Data: "null",
},
}
return c.updateRecords(rec, domainZone, recordName)
}
func (c *DNSProvider) getZone(fqdn string) (string, error) {
authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
if err != nil {
return "", err
}
return acme.UnFqdn(authZone), nil
}
func (c *DNSProvider) makeRequest(method, uri string, body io.Reader) (*http.Response, error) {
req, err := http.NewRequest(method, fmt.Sprintf("%s%s", apiURL, uri), body)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", fmt.Sprintf("sso-key %s:%s", c.apiKey, c.apiSecret))
client := http.Client{Timeout: 30 * time.Second}
return client.Do(req)
}
type DNSRecord struct {
Type string `json:"type"`
Name string `json:"name"`
Data string `json:"data"`
Priority int `json:"priority,omitempty"`
Ttl int `json:"ttl,omitempty"`
}
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