forked from TrueCloudLab/lego
151 lines
4.1 KiB
Go
151 lines
4.1 KiB
Go
|
// Package stackpath implements a DNS provider for solving the DNS-01 challenge using Stackpath DNS.
|
||
|
// https://developer.stackpath.com/en/api/dns/
|
||
|
package stackpath
|
||
|
|
||
|
import (
|
||
|
"context"
|
||
|
"errors"
|
||
|
"fmt"
|
||
|
"log"
|
||
|
"net/http"
|
||
|
"net/url"
|
||
|
"strings"
|
||
|
"time"
|
||
|
|
||
|
"github.com/xenolf/lego/acme"
|
||
|
"github.com/xenolf/lego/platform/config/env"
|
||
|
"golang.org/x/oauth2/clientcredentials"
|
||
|
)
|
||
|
|
||
|
const (
|
||
|
defaultBaseURL = "https://gateway.stackpath.com/dns/v1/stacks/"
|
||
|
defaultAuthURL = "https://gateway.stackpath.com/identity/v1/oauth2/token"
|
||
|
)
|
||
|
|
||
|
// Config is used to configure the creation of the DNSProvider
|
||
|
type Config struct {
|
||
|
ClientID string
|
||
|
ClientSecret string
|
||
|
StackID string
|
||
|
TTL int
|
||
|
PropagationTimeout time.Duration
|
||
|
PollingInterval time.Duration
|
||
|
}
|
||
|
|
||
|
// NewDefaultConfig returns a default configuration for the DNSProvider
|
||
|
func NewDefaultConfig() *Config {
|
||
|
return &Config{
|
||
|
TTL: env.GetOrDefaultInt("STACKPATH_TTL", 120),
|
||
|
PropagationTimeout: env.GetOrDefaultSecond("STACKPATH_PROPAGATION_TIMEOUT", acme.DefaultPropagationTimeout),
|
||
|
PollingInterval: env.GetOrDefaultSecond("STACKPATH_POLLING_INTERVAL", acme.DefaultPollingInterval),
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// DNSProvider is an implementation of the acme.ChallengeProvider interface.
|
||
|
type DNSProvider struct {
|
||
|
BaseURL *url.URL
|
||
|
client *http.Client
|
||
|
config *Config
|
||
|
}
|
||
|
|
||
|
// NewDNSProvider returns a DNSProvider instance configured for Stackpath.
|
||
|
// Credentials must be passed in the environment variables:
|
||
|
// STACKPATH_CLIENT_ID, STACKPATH_CLIENT_SECRET, and STACKPATH_STACK_ID.
|
||
|
func NewDNSProvider() (*DNSProvider, error) {
|
||
|
values, err := env.Get("STACKPATH_CLIENT_ID", "STACKPATH_CLIENT_SECRET", "STACKPATH_STACK_ID")
|
||
|
if err != nil {
|
||
|
return nil, fmt.Errorf("stackpath: %v", err)
|
||
|
}
|
||
|
|
||
|
config := NewDefaultConfig()
|
||
|
config.ClientID = values["STACKPATH_CLIENT_ID"]
|
||
|
config.ClientSecret = values["STACKPATH_CLIENT_SECRET"]
|
||
|
config.StackID = values["STACKPATH_STACK_ID"]
|
||
|
|
||
|
return NewDNSProviderConfig(config)
|
||
|
}
|
||
|
|
||
|
// NewDNSProviderConfig return a DNSProvider instance configured for Stackpath.
|
||
|
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
|
||
|
if config == nil {
|
||
|
return nil, errors.New("stackpath: the configuration of the DNS provider is nil")
|
||
|
}
|
||
|
|
||
|
if len(config.ClientID) == 0 || len(config.ClientSecret) == 0 {
|
||
|
return nil, errors.New("stackpath: credentials missing")
|
||
|
}
|
||
|
|
||
|
if len(config.StackID) == 0 {
|
||
|
return nil, errors.New("stackpath: stack id missing")
|
||
|
}
|
||
|
|
||
|
baseURL, _ := url.Parse(defaultBaseURL)
|
||
|
|
||
|
return &DNSProvider{
|
||
|
BaseURL: baseURL,
|
||
|
client: getOathClient(config),
|
||
|
config: config,
|
||
|
}, nil
|
||
|
}
|
||
|
|
||
|
func getOathClient(config *Config) *http.Client {
|
||
|
oathConfig := &clientcredentials.Config{
|
||
|
TokenURL: defaultAuthURL,
|
||
|
ClientID: config.ClientID,
|
||
|
ClientSecret: config.ClientSecret,
|
||
|
}
|
||
|
|
||
|
return oathConfig.Client(context.Background())
|
||
|
}
|
||
|
|
||
|
// Present creates a TXT record to fulfill the dns-01 challenge
|
||
|
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
|
||
|
zone, err := d.getZones(domain)
|
||
|
if err != nil {
|
||
|
return fmt.Errorf("stackpath: %v", err)
|
||
|
}
|
||
|
|
||
|
fqdn, value, _ := acme.DNS01Record(domain, keyAuth)
|
||
|
parts := strings.Split(fqdn, ".")
|
||
|
|
||
|
record := Record{
|
||
|
Name: parts[0],
|
||
|
Type: "TXT",
|
||
|
TTL: d.config.TTL,
|
||
|
Data: value,
|
||
|
}
|
||
|
|
||
|
return d.createZoneRecord(zone, record)
|
||
|
}
|
||
|
|
||
|
// CleanUp removes the TXT record matching the specified parameters
|
||
|
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
|
||
|
zone, err := d.getZones(domain)
|
||
|
if err != nil {
|
||
|
return fmt.Errorf("stackpath: %v", err)
|
||
|
}
|
||
|
|
||
|
fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
|
||
|
parts := strings.Split(fqdn, ".")
|
||
|
|
||
|
records, err := d.getZoneRecords(parts[0], zone)
|
||
|
if err != nil {
|
||
|
return err
|
||
|
}
|
||
|
|
||
|
for _, record := range records {
|
||
|
err = d.deleteZoneRecord(zone, record)
|
||
|
if err != nil {
|
||
|
log.Printf("stackpath: failed to delete TXT record: %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
|
||
|
}
|