ACME TLS ALPN

vendor/github.com/xenolf/lego/providers/dns/duckdns/duckdns.go

@@ -1,4 +1,4 @@
-// Package duckdns Adds lego support for http://duckdns.org .
+// Package duckdns Adds lego support for http://duckdns.org.
 // See http://www.duckdns.org/spec.jsp for more info on updating TXT records.
 package duckdns
 
@@ -6,30 +6,33 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
-	"os"
 
 	"github.com/xenolf/lego/acme"
+	"github.com/xenolf/lego/platform/config/env"
 )
 
 // DNSProvider adds and removes the record for the DNS challenge
 type DNSProvider struct {
-	// The duckdns api token
+	// The api token
 	token string
 }
 
 // NewDNSProvider returns a new DNS provider using
 // environment variable DUCKDNS_TOKEN for adding and removing the DNS record.
 func NewDNSProvider() (*DNSProvider, error) {
-	duckdnsToken := os.Getenv("DUCKDNS_TOKEN")
+	values, err := env.Get("DUCKDNS_TOKEN")
+	if err != nil {
+		return nil, fmt.Errorf("DuckDNS: %v", err)
+	}
 
-	return NewDNSProviderCredentials(duckdnsToken)
+	return NewDNSProviderCredentials(values["DUCKDNS_TOKEN"])
 }
 
 // NewDNSProviderCredentials uses the supplied credentials to return a
 // DNSProvider instance configured for http://duckdns.org .
 func NewDNSProviderCredentials(duckdnsToken string) (*DNSProvider, error) {
 	if duckdnsToken == "" {
-		return nil, errors.New("environment variable DUCKDNS_TOKEN not set")
+		return nil, errors.New("DuckDNS: credentials missing")
 	}
 
 	return &DNSProvider{token: duckdnsToken}, nil