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lego/providers/dns/sakuracloud/sakuracloud.go
2019-08-20 18:40:41 +02:00

102 lines
3.2 KiB
Go

// Package sakuracloud implements a DNS provider for solving the DNS-01 challenge using SakuraCloud DNS.
package sakuracloud
import (
"errors"
"fmt"
"net/http"
"time"
"github.com/go-acme/lego/v3/challenge/dns01"
"github.com/go-acme/lego/v3/platform/config/env"
"github.com/sacloud/libsacloud/api"
)
// Config is used to configure the creation of the DNSProvider
type Config struct {
Token string
Secret string
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
TTL: env.GetOrDefaultInt("SAKURACLOUD_TTL", dns01.DefaultTTL),
PropagationTimeout: env.GetOrDefaultSecond("SAKURACLOUD_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("SAKURACLOUD_POLLING_INTERVAL", dns01.DefaultPollingInterval),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond("SAKURACLOUD_HTTP_TIMEOUT", 10*time.Second),
},
}
}
// DNSProvider is an implementation of the challenge.Provider interface.
type DNSProvider struct {
config *Config
client *api.DNSAPI
}
// NewDNSProvider returns a DNSProvider instance configured for SakuraCloud.
// Credentials must be passed in the environment variables: SAKURACLOUD_ACCESS_TOKEN & SAKURACLOUD_ACCESS_TOKEN_SECRET
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("SAKURACLOUD_ACCESS_TOKEN", "SAKURACLOUD_ACCESS_TOKEN_SECRET")
if err != nil {
return nil, fmt.Errorf("sakuracloud: %v", err)
}
config := NewDefaultConfig()
config.Token = values["SAKURACLOUD_ACCESS_TOKEN"]
config.Secret = values["SAKURACLOUD_ACCESS_TOKEN_SECRET"]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for SakuraCloud.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("sakuracloud: the configuration of the DNS provider is nil")
}
if config.Token == "" {
return nil, errors.New("sakuracloud: AccessToken is missing")
}
if config.Secret == "" {
return nil, errors.New("sakuracloud: AccessSecret is missing")
}
apiClient := api.NewClient(config.Token, config.Secret, "is1a")
if config.HTTPClient == nil {
apiClient.HTTPClient = http.DefaultClient
} else {
apiClient.HTTPClient = config.HTTPClient
}
return &DNSProvider{
client: apiClient.GetDNSAPI(),
config: config,
}, nil
}
// Present creates a TXT record to fulfill the dns-01 challenge.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
return d.addTXTRecord(fqdn, domain, value, d.config.TTL)
}
// CleanUp removes the TXT record matching the specified parameters.
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _ := dns01.GetRecord(domain, keyAuth)
return d.cleanupTXTRecord(fqdn, domain)
}
// 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
}