lego/providers/dns/rackspace/rackspace.go
Ludovic Fernandez 42941ccea6
Refactor the core of the lib (#700)
- Packages
- Isolate code used by the CLI into the package `cmd`
- (experimental) Add e2e tests for HTTP01, TLS-ALPN-01 and DNS-01, use [Pebble](https://github.com/letsencrypt/pebble) and [challtestsrv](https://github.com/letsencrypt/boulder/tree/master/test/challtestsrv) 
- Support non-ascii domain name (punnycode)
- Check all challenges in a predictable order
- No more global exported variables
- Archive revoked certificates
- Fixes revocation for subdomains and non-ascii domains
- Disable pending authorizations
- use pointer for RemoteError/ProblemDetails
- Poll authz URL instead of challenge URL
- The ability for a DNS provider to solve the challenge sequentially
- Check all nameservers in a predictable order
- Option to disable the complete propagation Requirement
- CLI, support for renew with CSR
- CLI, add SAN on renew
- Add command to list certificates.
- Logs every iteration of waiting for the propagation
- update DNSimple client
- update github.com/miekg/dns
2018-12-06 22:50:17 +01:00

159 lines
4.5 KiB
Go

// Package rackspace implements a DNS provider for solving the DNS-01 challenge using rackspace DNS.
package rackspace
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"net/http"
"time"
"github.com/xenolf/lego/challenge/dns01"
"github.com/xenolf/lego/platform/config/env"
)
// defaultBaseURL represents the Identity API endpoint to call
const defaultBaseURL = "https://identity.api.rackspacecloud.com/v2.0/tokens"
// Config is used to configure the creation of the DNSProvider
type Config struct {
BaseURL string
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{
BaseURL: defaultBaseURL,
TTL: env.GetOrDefaultInt("RACKSPACE_TTL", 300),
PropagationTimeout: env.GetOrDefaultSecond("RACKSPACE_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("RACKSPACE_POLLING_INTERVAL", dns01.DefaultPollingInterval),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond("RACKSPACE_HTTP_TIMEOUT", 30*time.Second),
},
}
}
// DNSProvider is an implementation of the acme.ChallengeProvider interface
// used to store the reusable token and DNS API endpoint
type DNSProvider struct {
config *Config
token string
cloudDNSEndpoint string
}
// NewDNSProvider returns a DNSProvider instance configured for Rackspace.
// Credentials must be passed in the environment variables:
// RACKSPACE_USER and RACKSPACE_API_KEY.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("RACKSPACE_USER", "RACKSPACE_API_KEY")
if err != nil {
return nil, fmt.Errorf("rackspace: %v", err)
}
config := NewDefaultConfig()
config.APIUser = values["RACKSPACE_USER"]
config.APIKey = values["RACKSPACE_API_KEY"]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for Rackspace.
// It authenticates against the API, also grabbing the DNS Endpoint.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("rackspace: the configuration of the DNS provider is nil")
}
if config.APIUser == "" || config.APIKey == "" {
return nil, fmt.Errorf("rackspace: credentials missing")
}
identity, err := login(config)
if err != nil {
return nil, fmt.Errorf("rackspace: %v", err)
}
// Iterate through the Service Catalog to get the DNS Endpoint
var dnsEndpoint string
for _, service := range identity.Access.ServiceCatalog {
if service.Name == "cloudDNS" {
dnsEndpoint = service.Endpoints[0].PublicURL
break
}
}
if dnsEndpoint == "" {
return nil, fmt.Errorf("rackspace: failed to populate DNS endpoint, check Rackspace API for changes")
}
return &DNSProvider{
config: config,
token: identity.Access.Token.ID,
cloudDNSEndpoint: dnsEndpoint,
}, 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)
zoneID, err := d.getHostedZoneID(fqdn)
if err != nil {
return fmt.Errorf("rackspace: %v", err)
}
rec := Records{
Record: []Record{{
Name: dns01.UnFqdn(fqdn),
Type: "TXT",
Data: value,
TTL: d.config.TTL,
}},
}
body, err := json.Marshal(rec)
if err != nil {
return fmt.Errorf("rackspace: %v", err)
}
_, err = d.makeRequest(http.MethodPost, fmt.Sprintf("/domains/%d/records", zoneID), bytes.NewReader(body))
if err != nil {
return fmt.Errorf("rackspace: %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)
zoneID, err := d.getHostedZoneID(fqdn)
if err != nil {
return fmt.Errorf("rackspace: %v", err)
}
record, err := d.findTxtRecord(fqdn, zoneID)
if err != nil {
return fmt.Errorf("rackspace: %v", err)
}
_, err = d.makeRequest(http.MethodDelete, fmt.Sprintf("/domains/%d/records?id=%s", zoneID, record.ID), nil)
if err != nil {
return fmt.Errorf("rackspace: %v", err)
}
return 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
}