146 lines
3.5 KiB
Go
146 lines
3.5 KiB
Go
// Package dnspod implements a DNS provider for solving the DNS-01 challenge
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// using dnspod DNS.
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package dnspod
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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/decker502/dnspod-go"
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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 *dnspod.Client
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}
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// NewDNSProvider returns a DNSProvider instance configured for dnspod.
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// Credentials must be passed in the environment variables: DNSPOD_API_KEY.
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func NewDNSProvider() (*DNSProvider, error) {
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key := os.Getenv("DNSPOD_API_KEY")
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return NewDNSProviderCredentials(key)
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}
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// NewDNSProviderCredentials uses the supplied credentials to return a
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// DNSProvider instance configured for dnspod.
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func NewDNSProviderCredentials(key string) (*DNSProvider, error) {
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if key == "" {
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return nil, fmt.Errorf("dnspod credentials missing")
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}
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params := dnspod.CommonParams{LoginToken: key, Format: "json"}
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return &DNSProvider{
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client: dnspod.NewClient(params),
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}, 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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zoneID, zoneName, err := c.getHostedZone(domain)
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if err != nil {
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return err
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}
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recordAttributes := c.newTxtRecord(zoneName, fqdn, value, ttl)
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_, _, err = c.client.Domains.CreateRecord(zoneID, *recordAttributes)
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if err != nil {
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return fmt.Errorf("dnspod 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.findTxtRecords(domain, fqdn)
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if err != nil {
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return err
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}
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zoneID, _, err := c.getHostedZone(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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_, err := c.client.Domains.DeleteRecord(zoneID, rec.ID)
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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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return nil
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}
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func (c *DNSProvider) getHostedZone(domain string) (string, string, error) {
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zones, _, err := c.client.Domains.List()
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if err != nil {
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return "", "", fmt.Errorf("dnspod API call failed: %v", err)
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}
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authZone, err := acme.FindZoneByFqdn(acme.ToFqdn(domain), acme.RecursiveNameservers)
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if err != nil {
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return "", "", err
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}
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var hostedZone dnspod.Domain
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for _, zone := range zones {
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if zone.Name == acme.UnFqdn(authZone) {
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hostedZone = zone
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}
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}
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if hostedZone.ID == 0 {
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return "", "", fmt.Errorf("Zone %s not found in dnspod for domain %s", authZone, domain)
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}
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return fmt.Sprintf("%v", hostedZone.ID), hostedZone.Name, nil
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}
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func (c *DNSProvider) newTxtRecord(zone, fqdn, value string, ttl int) *dnspod.Record {
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name := c.extractRecordName(fqdn, zone)
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return &dnspod.Record{
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Type: "TXT",
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Name: name,
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Value: value,
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Line: "默认",
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TTL: "600",
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}
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}
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func (c *DNSProvider) findTxtRecords(domain, fqdn string) ([]dnspod.Record, error) {
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zoneID, zoneName, err := c.getHostedZone(domain)
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if err != nil {
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return nil, err
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}
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var records []dnspod.Record
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result, _, err := c.client.Domains.ListRecords(zoneID, "")
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if err != nil {
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return records, fmt.Errorf("dnspod API call has failed: %v", err)
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}
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recordName := c.extractRecordName(fqdn, zoneName)
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for _, record := range result {
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if record.Name == recordName {
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records = append(records, record)
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}
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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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