Update Lego

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

@@ -0,0 +1,116 @@
+// Package netcup implements a DNS Provider for solving the DNS-01 challenge using the netcup DNS API.
+package netcup
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/xenolf/lego/acme"
+	"github.com/xenolf/lego/platform/config/env"
+)
+
+// DNSProvider is an implementation of the acme.ChallengeProvider interface
+type DNSProvider struct {
+	client *Client
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for netcup.
+// Credentials must be passed in the environment variables: NETCUP_CUSTOMER_NUMBER,
+// NETCUP_API_KEY, NETCUP_API_PASSWORD
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get("NETCUP_CUSTOMER_NUMBER", "NETCUP_API_KEY", "NETCUP_API_PASSWORD")
+	if err != nil {
+		return nil, fmt.Errorf("netcup: %v", err)
+	}
+
+	return NewDNSProviderCredentials(values["NETCUP_CUSTOMER_NUMBER"], values["NETCUP_API_KEY"], values["NETCUP_API_PASSWORD"])
+}
+
+// NewDNSProviderCredentials uses the supplied credentials to return a
+// DNSProvider instance configured for netcup.
+func NewDNSProviderCredentials(customer, key, password string) (*DNSProvider, error) {
+	if customer == "" || key == "" || password == "" {
+		return nil, fmt.Errorf("netcup: netcup credentials missing")
+	}
+
+	httpClient := &http.Client{
+		Timeout: 10 * time.Second,
+	}
+
+	return &DNSProvider{
+		client: NewClient(httpClient, customer, key, password),
+	}, nil
+}
+
+// Present creates a TXT record to fulfill the dns-01 challenge
+func (d *DNSProvider) Present(domainName, token, keyAuth string) error {
+	fqdn, value, _ := acme.DNS01Record(domainName, keyAuth)
+
+	zone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
+	if err != nil {
+		return fmt.Errorf("netcup: failed to find DNSZone, %v", err)
+	}
+
+	sessionID, err := d.client.Login()
+	if err != nil {
+		return err
+	}
+
+	hostname := strings.Replace(fqdn, "."+zone, "", 1)
+	record := CreateTxtRecord(hostname, value)
+
+	err = d.client.UpdateDNSRecord(sessionID, acme.UnFqdn(zone), record)
+	if err != nil {
+		if errLogout := d.client.Logout(sessionID); errLogout != nil {
+			return fmt.Errorf("failed to add TXT-Record: %v; %v", err, errLogout)
+		}
+		return fmt.Errorf("failed to add TXT-Record: %v", err)
+	}
+
+	return d.client.Logout(sessionID)
+}
+
+// CleanUp removes the TXT record matching the specified parameters
+func (d *DNSProvider) CleanUp(domainname, token, keyAuth string) error {
+	fqdn, value, _ := acme.DNS01Record(domainname, keyAuth)
+
+	zone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
+	if err != nil {
+		return fmt.Errorf("failed to find DNSZone, %v", err)
+	}
+
+	sessionID, err := d.client.Login()
+	if err != nil {
+		return err
+	}
+
+	hostname := strings.Replace(fqdn, "."+zone, "", 1)
+
+	zone = acme.UnFqdn(zone)
+
+	records, err := d.client.GetDNSRecords(zone, sessionID)
+	if err != nil {
+		return err
+	}
+
+	record := CreateTxtRecord(hostname, value)
+
+	idx, err := GetDNSRecordIdx(records, record)
+	if err != nil {
+		return err
+	}
+
+	records[idx].DeleteRecord = true
+
+	err = d.client.UpdateDNSRecord(sessionID, zone, records[idx])
+	if err != nil {
+		if errLogout := d.client.Logout(sessionID); errLogout != nil {
+			return fmt.Errorf("%v; %v", err, errLogout)
+		}
+		return err
+	}
+
+	return d.client.Logout(sessionID)
+}