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lego/providers/dns/conoha/conoha.go

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// Package conoha implements a DNS provider for solving the DNS-01 challenge
// using ConoHa DNS.
package conoha
import (
"errors"
"fmt"
"net/http"
"time"
"github.com/xenolf/lego/acme"
"github.com/xenolf/lego/platform/config/env"
)
// Config is used to configure the creation of the DNSProvider
type Config struct {
Region string
TenantID string
Username string
Password string
TTL int
PropagationTimeout time.Duration
PollingInterval time.Duration
HTTPClient *http.Client
}
// NewDefaultConfig returns a default configuration for the DNSProvider
func NewDefaultConfig() *Config {
return &Config{
Region: env.GetOrDefaultString("CONOHA_REGION", "tyo1"),
TTL: env.GetOrDefaultInt("CONOHA_TTL", 60),
PropagationTimeout: env.GetOrDefaultSecond("CONOHA_PROPAGATION_TIMEOUT", acme.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond("CONOHA_POLLING_INTERVAL", acme.DefaultPollingInterval),
HTTPClient: &http.Client{
Timeout: env.GetOrDefaultSecond("CONOHA_HTTP_TIMEOUT", 30*time.Second),
},
}
}
// DNSProvider is an implementation of the acme.ChallengeProvider interface
type DNSProvider struct {
config *Config
client *Client
}
// NewDNSProvider returns a DNSProvider instance configured for ConoHa DNS.
// Credentials must be passed in the environment variables: CONOHA_TENANT_ID, CONOHA_API_USERNAME, CONOHA_API_PASSWORD
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get("CONOHA_TENANT_ID", "CONOHA_API_USERNAME", "CONOHA_API_PASSWORD")
if err != nil {
return nil, fmt.Errorf("conoha: %v", err)
}
config := NewDefaultConfig()
config.TenantID = values["CONOHA_TENANT_ID"]
config.Username = values["CONOHA_API_USERNAME"]
config.Password = values["CONOHA_API_PASSWORD"]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for ConoHa DNS.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("conoha: the configuration of the DNS provider is nil")
}
if config.TenantID == "" || config.Username == "" || config.Password == "" {
return nil, errors.New("conoha: some credentials information are missing")
}
auth := Auth{
TenantID: config.TenantID,
PasswordCredentials: PasswordCredentials{
Username: config.Username,
Password: config.Password,
},
}
client, err := NewClient(config.Region, auth, config.HTTPClient)
if err != nil {
return nil, fmt.Errorf("conoha: failed to create client: %v", err)
}
return &DNSProvider{config: config, client: client}, nil
}
// Present creates a TXT record to fulfill the dns-01 challenge.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
fqdn, value, _ := acme.DNS01Record(domain, keyAuth)
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authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
if err != nil {
return err
}
id, err := d.client.GetDomainID(authZone)
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if err != nil {
return fmt.Errorf("conoha: failed to get domain ID: %v", err)
}
record := Record{
Name: fqdn,
Type: "TXT",
Data: value,
TTL: d.config.TTL,
}
err = d.client.CreateRecord(id, record)
if err != nil {
return fmt.Errorf("conoha: failed to create record: %v", err)
}
return nil
}
// CleanUp clears ConoHa DNS TXT record
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
fqdn, value, _ := acme.DNS01Record(domain, keyAuth)
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authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
if err != nil {
return err
}
domID, err := d.client.GetDomainID(authZone)
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if err != nil {
return fmt.Errorf("conoha: failed to get domain ID: %v", err)
}
recID, err := d.client.GetRecordID(domID, fqdn, "TXT", value)
if err != nil {
return fmt.Errorf("conoha: failed to get record ID: %v", err)
}
err = d.client.DeleteRecord(domID, recID)
if err != nil {
return fmt.Errorf("conoha: failed to delete record: %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
}