Add Exoscale DNS provider (#311)

This commit is contained in:
Thomas Recloux 2016-11-07 08:37:57 +01:00 committed by xenolf
parent 800538520e
commit 7615653a08
4 changed files with 239 additions and 0 deletions

1
cli.go
View file

@ -207,6 +207,7 @@ Here is an example bash command using the CloudFlare DNS provider:
fmt.Fprintln(w, "\tdigitalocean:\tDO_AUTH_TOKEN")
fmt.Fprintln(w, "\tdnsimple:\tDNSIMPLE_EMAIL, DNSIMPLE_API_KEY")
fmt.Fprintln(w, "\tdnsmadeeasy:\tDNSMADEEASY_API_KEY, DNSMADEEASY_API_SECRET")
fmt.Fprintln(w, "\texoscale:\tEXOSCALE_API_KEY, EXOSCALE_API_SECRET, EXOSCALE_ENDPOINT")
fmt.Fprintln(w, "\tgandi:\tGANDI_API_KEY")
fmt.Fprintln(w, "\tgcloud:\tGCE_PROJECT")
fmt.Fprintln(w, "\tlinode:\tLINODE_API_KEY")

View file

@ -22,6 +22,7 @@ import (
"github.com/xenolf/lego/providers/dns/dnsimple"
"github.com/xenolf/lego/providers/dns/dnsmadeeasy"
"github.com/xenolf/lego/providers/dns/dyn"
"github.com/xenolf/lego/providers/dns/exoscale"
"github.com/xenolf/lego/providers/dns/gandi"
"github.com/xenolf/lego/providers/dns/googlecloud"
"github.com/xenolf/lego/providers/dns/linode"
@ -146,6 +147,8 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
provider, err = dnsimple.NewDNSProvider()
case "dnsmadeeasy":
provider, err = dnsmadeeasy.NewDNSProvider()
case "exoscale":
provider, err = exoscale.NewDNSProvider()
case "dyn":
provider, err = dyn.NewDNSProvider()
case "gandi":

View file

@ -0,0 +1,132 @@
// Package exoscale implements a DNS provider for solving the DNS-01 challenge
// using exoscale DNS.
package exoscale
import (
"errors"
"fmt"
"os"
"github.com/pyr/egoscale/src/egoscale"
"github.com/xenolf/lego/acme"
)
// DNSProvider is an implementation of the acme.ChallengeProvider interface.
type DNSProvider struct {
client *egoscale.Client
}
// Credentials must be passed in the environment variables:
// EXOSCALE_API_KEY, EXOSCALE_API_SECRET, EXOSCALE_ENDPOINT.
func NewDNSProvider() (*DNSProvider, error) {
key := os.Getenv("EXOSCALE_API_KEY")
secret := os.Getenv("EXOSCALE_API_SECRET")
endpoint := os.Getenv("EXOSCALE_ENDPOINT")
return NewDNSProviderClient(key, secret, endpoint)
}
// Uses the supplied parameters to return a DNSProvider instance
// configured for Exoscale.
func NewDNSProviderClient(key, secret, endpoint string) (*DNSProvider, error) {
if key == "" || secret == "" {
return nil, fmt.Errorf("Exoscale credentials missing")
}
if endpoint == "" {
endpoint = "https://api.exoscale.ch/dns"
}
return &DNSProvider{
client: egoscale.NewClient(endpoint, key, secret),
}, nil
}
// Present creates a TXT record to fulfil the dns-01 challenge.
func (c *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value, ttl := acme.DNS01Record(domain, keyAuth)
zone, recordName, err := c.FindZoneAndRecordName(fqdn, domain)
if err != nil {
return err
}
recordId, err := c.FindExistingRecordId(zone, recordName)
if err != nil {
return err
}
record := egoscale.DNSRecord{
Name: recordName,
Ttl: ttl,
Content: value,
RecordType: "TXT",
}
if recordId == 0 {
_, err := c.client.CreateRecord(zone, record)
if err != nil {
return errors.New("Error while creating DNS record: " + err.Error())
}
} else {
record.Id = recordId
_, err := c.client.UpdateRecord(zone, record)
if err != nil {
return errors.New("Error while updating DNS record: " + err.Error())
}
}
return nil
}
// CleanUp removes the record matching the specified parameters.
func (c *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
zone, recordName, err := c.FindZoneAndRecordName(fqdn, domain)
if err != nil {
return err
}
recordId, err := c.FindExistingRecordId(zone, recordName)
if err != nil {
return err
}
if recordId != 0 {
record := egoscale.DNSRecord{
Id: recordId,
}
err = c.client.DeleteRecord(zone, record)
if err != nil {
return errors.New("Error while deleting DNS record: " + err.Error())
}
}
return nil
}
// Query Exoscale to find an existing record for this name.
// Returns nil if no record could be found
func (c *DNSProvider) FindExistingRecordId(zone, recordName string) (int64, error) {
responses, err := c.client.GetRecords(zone)
if err != nil {
return -1, errors.New("Error while retrievening DNS records: " + err.Error())
}
for _, response := range responses {
if response.Record.Name == recordName {
return response.Record.Id, nil
}
}
return 0, nil
}
// Extract DNS zone and DNS entry name
func (c *DNSProvider) FindZoneAndRecordName(fqdn, domain string) (string, string, error) {
zone, err := acme.FindZoneByFqdn(acme.ToFqdn(domain), acme.RecursiveNameservers)
if err != nil {
return "", "", err
}
zone = acme.UnFqdn(zone)
name := acme.UnFqdn(fqdn)
name = name[:len(name)-len("."+zone)]
return zone, name, nil
}

View file

@ -0,0 +1,103 @@
package exoscale
import (
"os"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
var (
exoscaleLiveTest bool
exoscaleAPIKey string
exoscaleAPISecret string
exoscaleDomain string
)
func init() {
exoscaleAPISecret = os.Getenv("EXOSCALE_API_SECRET")
exoscaleAPIKey = os.Getenv("EXOSCALE_API_KEY")
exoscaleDomain = os.Getenv("EXOSCALE_DOMAIN")
if len(exoscaleAPIKey) > 0 && len(exoscaleAPISecret) > 0 && len(exoscaleDomain) > 0 {
exoscaleLiveTest = true
}
}
func restoreExoscaleEnv() {
os.Setenv("EXOSCALE_API_KEY", exoscaleAPIKey)
os.Setenv("EXOSCALE_API_SECRET", exoscaleAPISecret)
}
func TestNewDNSProviderValid(t *testing.T) {
os.Setenv("EXOSCALE_API_KEY", "")
os.Setenv("EXOSCALE_API_SECRET", "")
_, err := NewDNSProviderClient("example@example.com", "123", "")
assert.NoError(t, err)
restoreExoscaleEnv()
}
func TestNewDNSProviderValidEnv(t *testing.T) {
os.Setenv("EXOSCALE_API_KEY", "example@example.com")
os.Setenv("EXOSCALE_API_SECRET", "123")
_, err := NewDNSProvider()
assert.NoError(t, err)
restoreExoscaleEnv()
}
func TestNewDNSProviderMissingCredErr(t *testing.T) {
os.Setenv("EXOSCALE_API_KEY", "")
os.Setenv("EXOSCALE_API_SECRET", "")
_, err := NewDNSProvider()
assert.EqualError(t, err, "Exoscale credentials missing")
restoreExoscaleEnv()
}
func TestExtractRootRecordName(t *testing.T) {
provider, err := NewDNSProviderClient("example@example.com", "123", "")
assert.NoError(t, err)
zone, recordName, err := provider.FindZoneAndRecordName("_acme-challenge.bar.com.", "bar.com")
assert.NoError(t, err)
assert.Equal(t, "bar.com", zone)
assert.Equal(t, "_acme-challenge", recordName)
}
func TestExtractSubRecordName(t *testing.T) {
provider, err := NewDNSProviderClient("example@example.com", "123", "")
assert.NoError(t, err)
zone, recordName, err := provider.FindZoneAndRecordName("_acme-challenge.foo.bar.com.", "foo.bar.com")
assert.NoError(t, err)
assert.Equal(t, "bar.com", zone)
assert.Equal(t, "_acme-challenge.foo", recordName)
}
func TestLiveExoscalePresent(t *testing.T) {
if !exoscaleLiveTest {
t.Skip("skipping live test")
}
provider, err := NewDNSProviderClient(exoscaleAPIKey, exoscaleAPISecret, "")
assert.NoError(t, err)
err = provider.Present(exoscaleDomain, "", "123d==")
assert.NoError(t, err)
// Present Twice to handle create / update
err = provider.Present(exoscaleDomain, "", "123d==")
assert.NoError(t, err)
}
func TestLiveExoscaleCleanUp(t *testing.T) {
if !exoscaleLiveTest {
t.Skip("skipping live test")
}
time.Sleep(time.Second * 1)
provider, err := NewDNSProviderClient(exoscaleAPIKey, exoscaleAPISecret, "")
assert.NoError(t, err)
err = provider.CleanUp(exoscaleDomain, "", "123d==")
assert.NoError(t, err)
}