traefik/vendor/github.com/xenolf/lego/providers/dns/inwx/inwx.go
2018-11-19 16:40:03 +01:00

166 lines
4.4 KiB
Go

// Package inwx implements a DNS provider for solving the DNS-01 challenge using inwx dom robot
package inwx
import (
"errors"
"fmt"
"time"
"github.com/smueller18/goinwx"
"github.com/xenolf/lego/acme"
"github.com/xenolf/lego/log"
"github.com/xenolf/lego/platform/config/env"
)
// Config is used to configure the creation of the DNSProvider
type Config struct {
Username string
Password string
Sandbox bool
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
PropagationTimeout: env.GetOrDefaultSecond("INWX_PROPAGATION_TIMEOUT", acme.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("INWX_POLLING_INTERVAL", acme.DefaultPollingInterval),
TTL: env.GetOrDefaultInt("INWX_TTL", 300),
Sandbox: env.GetOrDefaultBool("INWX_SANDBOX", false),
}
}
// DNSProvider is an implementation of the acme.ChallengeProvider interface
type DNSProvider struct {
config *Config
client *goinwx.Client
}
// NewDNSProvider returns a DNSProvider instance configured for Dyn DNS.
// Credentials must be passed in the environment variables:
// INWX_USERNAME and INWX_PASSWORD.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("INWX_USERNAME", "INWX_PASSWORD")
if err != nil {
return nil, fmt.Errorf("inwx: %v", err)
}
config := NewDefaultConfig()
config.Username = values["INWX_USERNAME"]
config.Password = values["INWX_PASSWORD"]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for Dyn DNS
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("inwx: the configuration of the DNS provider is nil")
}
if config.Username == "" || config.Password == "" {
return nil, fmt.Errorf("inwx: credentials missing")
}
if config.Sandbox {
log.Infof("inwx: sandbox mode is enabled")
}
client := goinwx.NewClient(config.Username, config.Password, &goinwx.ClientOptions{Sandbox: config.Sandbox})
return &DNSProvider{config: config, client: client}, nil
}
// Present creates a TXT record using the specified parameters
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value, _ := acme.DNS01Record(domain, keyAuth)
authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
if err != nil {
return fmt.Errorf("inwx: %v", err)
}
err = d.client.Account.Login()
if err != nil {
return fmt.Errorf("inwx: %v", err)
}
defer func() {
errL := d.client.Account.Logout()
if errL != nil {
log.Infof("inwx: failed to logout: %v", errL)
}
}()
var request = &goinwx.NameserverRecordRequest{
Domain: acme.UnFqdn(authZone),
Name: acme.UnFqdn(fqdn),
Type: "TXT",
Content: value,
Ttl: d.config.TTL,
}
_, err = d.client.Nameservers.CreateRecord(request)
if err != nil {
switch err.(type) {
case *goinwx.ErrorResponse:
if err.(*goinwx.ErrorResponse).Message == "Object exists" {
return nil
}
return fmt.Errorf("inwx: %v", err)
default:
return fmt.Errorf("inwx: %v", err)
}
}
return nil
}
// CleanUp removes the TXT record matching the specified parameters
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
if err != nil {
return fmt.Errorf("inwx: %v", err)
}
err = d.client.Account.Login()
if err != nil {
return fmt.Errorf("inwx: %v", err)
}
defer func() {
errL := d.client.Account.Logout()
if errL != nil {
log.Infof("inwx: failed to logout: %v", errL)
}
}()
response, err := d.client.Nameservers.Info(&goinwx.NameserverInfoRequest{
Domain: acme.UnFqdn(authZone),
Name: acme.UnFqdn(fqdn),
Type: "TXT",
})
if err != nil {
return fmt.Errorf("inwx: %v", err)
}
var lastErr error
for _, record := range response.Records {
err = d.client.Nameservers.DeleteRecord(record.Id)
if err != nil {
lastErr = fmt.Errorf("inwx: %v", err)
}
}
return lastErr
}
// 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
}