mirror of
https://github.com/go-acme/lego
synced 2026-03-14 14:35:48 +01:00
130 lines
3.8 KiB
Go
130 lines
3.8 KiB
Go
// Package ddnss implements a DNS provider for solving the DNS-01 challenge using DynDNS Service.
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package ddnss
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"time"
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"github.com/go-acme/lego/v4/challenge/dns01"
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"github.com/go-acme/lego/v4/platform/config/env"
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"github.com/go-acme/lego/v4/providers/dns/ddnss/internal"
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"github.com/go-acme/lego/v4/providers/dns/internal/clientdebug"
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)
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// Environment variables names.
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const (
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envNamespace = "DDNSS_"
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EnvKey = envNamespace + "KEY"
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EnvTTL = envNamespace + "TTL"
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EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
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EnvPollingInterval = envNamespace + "POLLING_INTERVAL"
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EnvHTTPTimeout = envNamespace + "HTTP_TIMEOUT"
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EnvSequenceInterval = envNamespace + "SEQUENCE_INTERVAL"
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)
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// Config is used to configure the creation of the DNSProvider.
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type Config struct {
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Key string
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PropagationTimeout time.Duration
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PollingInterval time.Duration
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SequenceInterval time.Duration
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TTL int
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HTTPClient *http.Client
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}
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// NewDefaultConfig returns a default configuration for the DNSProvider.
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func NewDefaultConfig() *Config {
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return &Config{
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TTL: env.GetOrDefaultInt(EnvTTL, dns01.DefaultTTL),
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PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, dns01.DefaultPropagationTimeout),
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PollingInterval: env.GetOrDefaultSecond(EnvPollingInterval, dns01.DefaultPollingInterval),
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SequenceInterval: env.GetOrDefaultSecond(EnvSequenceInterval, dns01.DefaultPropagationTimeout),
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HTTPClient: &http.Client{
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Timeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 30*time.Second),
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},
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}
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}
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// DNSProvider implements the challenge.Provider interface.
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type DNSProvider struct {
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config *Config
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client *internal.Client
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}
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// NewDNSProvider returns a DNSProvider instance configured for DynDNS Service.
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func NewDNSProvider() (*DNSProvider, error) {
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values, err := env.Get(EnvKey)
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if err != nil {
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return nil, fmt.Errorf("ddnss: %w", err)
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}
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config := NewDefaultConfig()
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config.Key = values[EnvKey]
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return NewDNSProviderConfig(config)
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}
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// NewDNSProviderConfig return a DNSProvider instance configured for DynDNS Service.
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func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
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if config == nil {
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return nil, errors.New("ddnss: the configuration of the DNS provider is nil")
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}
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client, err := internal.NewClient(&internal.Authentication{Key: config.Key})
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if err != nil {
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return nil, fmt.Errorf("ddnss: %w", err)
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}
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if config.HTTPClient != nil {
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client.HTTPClient = config.HTTPClient
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}
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client.HTTPClient = clientdebug.Wrap(client.HTTPClient)
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return &DNSProvider{
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config: config,
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client: client,
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}, nil
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}
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// Present creates a TXT record using the specified parameters.
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func (d *DNSProvider) Present(domain, token, keyAuth string) error {
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info := dns01.GetChallengeInfo(domain, keyAuth)
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err := d.client.AddTXTRecord(context.Background(), dns01.UnFqdn(info.EffectiveFQDN), info.Value)
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if err != nil {
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return fmt.Errorf("ddnss: add TXT record: %w", err)
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}
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return nil
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}
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// CleanUp removes the TXT record matching the specified parameters.
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func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
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info := dns01.GetChallengeInfo(domain, keyAuth)
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err := d.client.RemoveTXTRecord(context.Background(), dns01.UnFqdn(info.EffectiveFQDN))
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if err != nil {
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return fmt.Errorf("ddnss: remove TXT record: %w", err)
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}
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return nil
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}
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// Timeout returns the timeout and interval to use when checking for DNS propagation.
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// Adjusting here to cope with spikes in propagation times.
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func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
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return d.config.PropagationTimeout, d.config.PollingInterval
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}
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// Sequential All DNS challenges for this provider will be resolved sequentially.
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// Returns the interval between each iteration.
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func (d *DNSProvider) Sequential() time.Duration {
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return d.config.SequenceInterval
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}
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