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