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domeneshop.go
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domeneshop.go
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// Package domeneshop implements a DNS provider for solving the DNS-01 challenge using domeneshop DNS.
package domeneshop
import (
"errors"
"fmt"
"net/http"
"strings"
"time"
"github.com/go-acme/lego/v4/challenge/dns01"
"github.com/go-acme/lego/v4/platform/config/env"
"github.com/go-acme/lego/v4/providers/dns/domeneshop/internal"
)
// Environment variables names.
const (
envNamespace = "DOMENESHOP_"
EnvAPIToken = envNamespace + "API_TOKEN"
EnvAPISecret = envNamespace + "API_SECRET"
EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
EnvPollingInterval = envNamespace + "POLLING_INTERVAL"
EnvHTTPTimeout = envNamespace + "HTTP_TIMEOUT"
)
// Config is used to configure the creation of the DNSProvider.
type Config struct {
APIToken string
APISecret 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(EnvPropagationTimeout, 5*time.Minute),
PollingInterval: env.GetOrDefaultSecond(EnvPollingInterval, 20*time.Second),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 30*time.Second),
},
}
}
// DNSProvider implements the challenge.Provider interface.
type DNSProvider struct {
config *Config
client *internal.Client
}
// NewDNSProvider returns a DNSProvider instance configured for domeneshop.
// Credentials must be passed in the environment variables:
// DOMENESHOP_API_TOKEN, DOMENESHOP_API_SECRET.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get(EnvAPIToken, EnvAPISecret)
if err != nil {
return nil, fmt.Errorf("domeneshop: %w", err)
}
config := NewDefaultConfig()
config.APIToken = values[EnvAPIToken]
config.APISecret = values[EnvAPISecret]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for Domeneshop.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("domeneshop: the configuration of the DNS provider is nil")
}
if config.APIToken == "" || config.APISecret == "" {
return nil, errors.New("domeneshop: credentials missing")
}
client := internal.NewClient(config.APIToken, config.APISecret)
if config.HTTPClient != nil {
client.HTTPClient = config.HTTPClient
}
return &DNSProvider{config: config, client: client}, 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 using the specified parameters.
func (d *DNSProvider) Present(domain, _, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
zone, host, err := d.splitDomain(fqdn)
if err != nil {
return fmt.Errorf("domeneshop: %w", err)
}
domainInstance, err := d.client.GetDomainByName(zone)
if err != nil {
return fmt.Errorf("domeneshop: %w", err)
}
err = d.client.CreateTXTRecord(domainInstance, host, value)
if err != nil {
return fmt.Errorf("domeneshop: failed to create record: %w", err)
}
return nil
}
// CleanUp removes the TXT record matching the specified parameters.
func (d *DNSProvider) CleanUp(domain, _, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
zone, host, err := d.splitDomain(fqdn)
if err != nil {
return fmt.Errorf("domeneshop: %w", err)
}
domainInstance, err := d.client.GetDomainByName(zone)
if err != nil {
return fmt.Errorf("domeneshop: %w", err)
}
if err := d.client.DeleteTXTRecord(domainInstance, host, value); err != nil {
return fmt.Errorf("domeneshop: failed to create record: %w", err)
}
return nil
}
// splitDomain splits the hostname from the authoritative zone, and returns both parts (non-fqdn).
func (d *DNSProvider) splitDomain(fqdn string) (string, string, error) {
zone, err := dns01.FindZoneByFqdn(fqdn)
if err != nil {
return "", "", err
}
host := dns01.UnFqdn(strings.TrimSuffix(fqdn, zone))
zone = dns01.UnFqdn(zone)
return zone, host, nil
}