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