146 lines
4.3 KiB
Go
146 lines
4.3 KiB
Go
// Package glesys implements a DNS provider for solving the DNS-01 challenge using GleSYS api.
|
|
package glesys
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/go-acme/lego/challenge/dns01"
|
|
"github.com/go-acme/lego/platform/config/env"
|
|
)
|
|
|
|
const (
|
|
// defaultBaseURL is the GleSYS API endpoint used by Present and CleanUp.
|
|
defaultBaseURL = "https://api.glesys.com/domain"
|
|
minTTL = 60
|
|
)
|
|
|
|
// Config is used to configure the creation of the DNSProvider
|
|
type Config struct {
|
|
APIUser string
|
|
APIKey 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("GLESYS_TTL", minTTL),
|
|
PropagationTimeout: env.GetOrDefaultSecond("GLESYS_PROPAGATION_TIMEOUT", 20*time.Minute),
|
|
PollingInterval: env.GetOrDefaultSecond("GLESYS_POLLING_INTERVAL", 20*time.Second),
|
|
HTTPClient: &http.Client{
|
|
Timeout: env.GetOrDefaultSecond("GLESYS_HTTP_TIMEOUT", 10*time.Second),
|
|
},
|
|
}
|
|
}
|
|
|
|
// DNSProvider is an implementation of the
|
|
// acme.ChallengeProviderTimeout interface that uses GleSYS
|
|
// API to manage TXT records for a domain.
|
|
type DNSProvider struct {
|
|
config *Config
|
|
activeRecords map[string]int
|
|
inProgressMu sync.Mutex
|
|
}
|
|
|
|
// NewDNSProvider returns a DNSProvider instance configured for GleSYS.
|
|
// Credentials must be passed in the environment variables:
|
|
// GLESYS_API_USER and GLESYS_API_KEY.
|
|
func NewDNSProvider() (*DNSProvider, error) {
|
|
values, err := env.Get("GLESYS_API_USER", "GLESYS_API_KEY")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("glesys: %v", err)
|
|
}
|
|
|
|
config := NewDefaultConfig()
|
|
config.APIUser = values["GLESYS_API_USER"]
|
|
config.APIKey = values["GLESYS_API_KEY"]
|
|
|
|
return NewDNSProviderConfig(config)
|
|
}
|
|
|
|
// NewDNSProviderConfig return a DNSProvider instance configured for GleSYS.
|
|
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
|
|
if config == nil {
|
|
return nil, errors.New("glesys: the configuration of the DNS provider is nil")
|
|
}
|
|
|
|
if config.APIUser == "" || config.APIKey == "" {
|
|
return nil, fmt.Errorf("glesys: incomplete credentials provided")
|
|
}
|
|
|
|
if config.TTL < minTTL {
|
|
return nil, fmt.Errorf("glesys: invalid TTL, TTL (%d) must be greater than %d", config.TTL, minTTL)
|
|
}
|
|
|
|
return &DNSProvider{
|
|
config: config,
|
|
activeRecords: make(map[string]int),
|
|
}, nil
|
|
}
|
|
|
|
// Present creates a TXT record using the specified parameters.
|
|
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
|
|
fqdn, value := dns01.GetRecord(domain, keyAuth)
|
|
|
|
// find authZone
|
|
authZone, err := dns01.FindZoneByFqdn(fqdn)
|
|
if err != nil {
|
|
return fmt.Errorf("glesys: findZoneByFqdn failure: %v", err)
|
|
}
|
|
|
|
// determine name of TXT record
|
|
if !strings.HasSuffix(
|
|
strings.ToLower(fqdn), strings.ToLower("."+authZone)) {
|
|
return fmt.Errorf("glesys: unexpected authZone %s for fqdn %s", authZone, fqdn)
|
|
}
|
|
name := fqdn[:len(fqdn)-len("."+authZone)]
|
|
|
|
// acquire lock and check there is not a challenge already in
|
|
// progress for this value of authZone
|
|
d.inProgressMu.Lock()
|
|
defer d.inProgressMu.Unlock()
|
|
|
|
// add TXT record into authZone
|
|
recordID, err := d.addTXTRecord(domain, dns01.UnFqdn(authZone), name, value, d.config.TTL)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// save data necessary for CleanUp
|
|
d.activeRecords[fqdn] = recordID
|
|
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)
|
|
|
|
// acquire lock and retrieve authZone
|
|
d.inProgressMu.Lock()
|
|
defer d.inProgressMu.Unlock()
|
|
if _, ok := d.activeRecords[fqdn]; !ok {
|
|
// if there is no cleanup information then just return
|
|
return nil
|
|
}
|
|
|
|
recordID := d.activeRecords[fqdn]
|
|
delete(d.activeRecords, fqdn)
|
|
|
|
// delete TXT record from authZone
|
|
return d.deleteTXTRecord(domain, recordID)
|
|
}
|
|
|
|
// Timeout returns the values (20*time.Minute, 20*time.Second) which
|
|
// are used by the acme package as timeout and check interval values
|
|
// when checking for DNS record propagation with GleSYS.
|
|
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
|
|
return d.config.PropagationTimeout, d.config.PollingInterval
|
|
}
|