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lego/providers/dns/dode/dode.go

90 lines
2.8 KiB
Go

// Package dode implements a DNS provider for solving the DNS-01 challenge using do.de.
package dode
import (
"errors"
"fmt"
"net/http"
"time"
"github.com/go-acme/lego/challenge/dns01"
"github.com/go-acme/lego/platform/config/env"
)
// Config is used to configure the creation of the DNSProvider
type Config struct {
Token string
PropagationTimeout time.Duration
PollingInterval time.Duration
SequenceInterval time.Duration
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
PropagationTimeout: env.GetOrDefaultSecond("DODE_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("DODE_POLLING_INTERVAL", dns01.DefaultPollingInterval),
SequenceInterval: env.GetOrDefaultSecond("DODE_SEQUENCE_INTERVAL", dns01.DefaultPropagationTimeout),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond("DODE_HTTP_TIMEOUT", 30*time.Second),
},
}
}
// DNSProvider adds and removes the record for the DNS challenge
type DNSProvider struct {
config *Config
}
// NewDNSProvider returns a new DNS provider using
// environment variable DODE_TOKEN for adding and removing the DNS record.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("DODE_TOKEN")
if err != nil {
return nil, fmt.Errorf("do.de: %v", err)
}
config := NewDefaultConfig()
config.Token = values["DODE_TOKEN"]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for do.de.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("do.de: the configuration of the DNS provider is nil")
}
if config.Token == "" {
return nil, errors.New("do.de: credentials missing")
}
return &DNSProvider{config: config}, nil
}
// Present creates a TXT record to fulfill the dns-01 challenge.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, txtRecord := dns01.GetRecord(domain, keyAuth)
return d.updateTxtRecord(fqdn, d.config.Token, txtRecord, false)
}
// CleanUp clears TXT record
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _ := dns01.GetRecord(domain, keyAuth)
return d.updateTxtRecord(fqdn, d.config.Token, "", true)
}
// 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
}
// Sequential All DNS challenges for this provider will be resolved sequentially.
// Returns the interval between each iteration.
func (d *DNSProvider) Sequential() time.Duration {
return d.config.SequenceInterval
}