traefik/vendor/github.com/go-acme/lego/providers/dns/vegadns/vegadns.go
2019-03-14 11:04:04 +01:00

113 lines
3.4 KiB
Go

// Package vegadns implements a DNS provider for solving the DNS-01 challenge using VegaDNS.
package vegadns
import (
"errors"
"fmt"
"strings"
"time"
vegaClient "github.com/OpenDNS/vegadns2client"
"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 {
BaseURL string
APIKey string
APISecret string
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
TTL: env.GetOrDefaultInt("VEGADNS_TTL", 10),
PropagationTimeout: env.GetOrDefaultSecond("VEGADNS_PROPAGATION_TIMEOUT", 12*time.Minute),
PollingInterval: env.GetOrDefaultSecond("VEGADNS_POLLING_INTERVAL", 1*time.Minute),
}
}
// DNSProvider describes a provider for VegaDNS
type DNSProvider struct {
config *Config
client vegaClient.VegaDNSClient
}
// NewDNSProvider returns a DNSProvider instance configured for VegaDNS.
// Credentials must be passed in the environment variables:
// VEGADNS_URL, SECRET_VEGADNS_KEY, SECRET_VEGADNS_SECRET.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("VEGADNS_URL")
if err != nil {
return nil, fmt.Errorf("vegadns: %v", err)
}
config := NewDefaultConfig()
config.BaseURL = values["VEGADNS_URL"]
config.APIKey = env.GetOrFile("SECRET_VEGADNS_KEY")
config.APISecret = env.GetOrFile("SECRET_VEGADNS_SECRET")
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for VegaDNS.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("vegadns: the configuration of the DNS provider is nil")
}
vega := vegaClient.NewVegaDNSClient(config.BaseURL)
vega.APIKey = config.APIKey
vega.APISecret = config.APISecret
return &DNSProvider{client: vega, config: config}, 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 to fulfill the dns-01 challenge
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value := dns01.GetRecord(domain, keyAuth)
_, domainID, err := d.client.GetAuthZone(fqdn)
if err != nil {
return fmt.Errorf("vegadns: can't find Authoritative Zone for %s in Present: %v", fqdn, err)
}
err = d.client.CreateTXT(domainID, fqdn, value, d.config.TTL)
if err != nil {
return fmt.Errorf("vegadns: %v", err)
}
return nil
}
// CleanUp removes the TXT record matching the specified parameters
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _ := dns01.GetRecord(domain, keyAuth)
_, domainID, err := d.client.GetAuthZone(fqdn)
if err != nil {
return fmt.Errorf("vegadns: can't find Authoritative Zone for %s in CleanUp: %v", fqdn, err)
}
txt := strings.TrimSuffix(fqdn, ".")
recordID, err := d.client.GetRecordID(domainID, txt, "TXT")
if err != nil {
return fmt.Errorf("vegadns: couldn't get Record ID in CleanUp: %s", err)
}
err = d.client.DeleteRecord(recordID)
if err != nil {
return fmt.Errorf("vegadns: %v", err)
}
return nil
}