124 lines
2.9 KiB
Go
124 lines
2.9 KiB
Go
// Package namedotcom implements a DNS provider for solving the DNS-01 challenge
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// using Name.com's DNS service.
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package namedotcom
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import (
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"fmt"
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"os"
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"strings"
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"github.com/namedotcom/go/namecom"
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"github.com/xenolf/lego/acme"
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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 *namecom.NameCom
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}
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// NewDNSProvider returns a DNSProvider instance configured for namedotcom.
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// Credentials must be passed in the environment variables: NAMECOM_USERNAME and NAMECOM_API_TOKEN
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func NewDNSProvider() (*DNSProvider, error) {
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username := os.Getenv("NAMECOM_USERNAME")
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apiToken := os.Getenv("NAMECOM_API_TOKEN")
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server := os.Getenv("NAMECOM_SERVER")
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return NewDNSProviderCredentials(username, apiToken, server)
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}
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// NewDNSProviderCredentials uses the supplied credentials to return a
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// DNSProvider instance configured for namedotcom.
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func NewDNSProviderCredentials(username, apiToken, server string) (*DNSProvider, error) {
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if username == "" {
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return nil, fmt.Errorf("Name.com Username is required")
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}
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if apiToken == "" {
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return nil, fmt.Errorf("Name.com API token is required")
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}
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client := namecom.New(username, apiToken)
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if server != "" {
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client.Server = server
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}
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return &DNSProvider{client: client}, nil
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}
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// Present creates a TXT record to fulfil the dns-01 challenge.
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func (c *DNSProvider) Present(domain, token, keyAuth string) error {
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fqdn, value, ttl := acme.DNS01Record(domain, keyAuth)
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request := &namecom.Record{
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DomainName: domain,
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Host: c.extractRecordName(fqdn, domain),
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Type: "TXT",
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TTL: uint32(ttl),
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Answer: value,
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}
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_, err := c.client.CreateRecord(request)
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if err != nil {
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return fmt.Errorf("namedotcom API call failed: %v", err)
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}
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return nil
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}
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// CleanUp removes the TXT record matching the specified parameters.
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func (c *DNSProvider) CleanUp(domain, token, keyAuth string) error {
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fqdn, _, _ := acme.DNS01Record(domain, keyAuth)
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records, err := c.getRecords(domain)
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if err != nil {
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return err
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}
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for _, rec := range records {
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if rec.Fqdn == fqdn && rec.Type == "TXT" {
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request := &namecom.DeleteRecordRequest{
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DomainName: domain,
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ID: rec.ID,
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}
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_, err := c.client.DeleteRecord(request)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (c *DNSProvider) getRecords(domain string) ([]*namecom.Record, error) {
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var (
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err error
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records []*namecom.Record
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response *namecom.ListRecordsResponse
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)
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request := &namecom.ListRecordsRequest{
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DomainName: domain,
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Page: 1,
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}
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for request.Page > 0 {
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response, err = c.client.ListRecords(request)
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if err != nil {
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return nil, err
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}
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records = append(records, response.Records...)
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request.Page = response.NextPage
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}
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return records, nil
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}
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func (c *DNSProvider) extractRecordName(fqdn, domain string) string {
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name := acme.UnFqdn(fqdn)
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if idx := strings.Index(name, "."+domain); idx != -1 {
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return name[:idx]
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}
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return name
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}
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