forked from TrueCloudLab/lego
xenolf
GitHub
commit
160cb3b6e8
5 changed files with 434 additions and 0 deletions
1
cli.go
1
cli.go
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@ -202,6 +202,7 @@ Here is an example bash command using the CloudFlare DNS provider:
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fmt.Fprintln(w, "\tdyn:\tDYN_CUSTOMER_NAME, DYN_USER_NAME, DYN_PASSWORD")
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fmt.Fprintln(w, "\tvultr:\tVULTR_API_KEY")
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fmt.Fprintln(w, "\tovh:\tOVH_ENDPOINT, OVH_APPLICATION_KEY, OVH_APPLICATION_SECRET, OVH_CONSUMER_KEY")
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fmt.Fprintln(w, "\tpdns:\tPDNS_API_KEY, PDNS_API_URL")
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w.Flush()
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fmt.Println(`
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@ -24,6 +24,7 @@ import (
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"github.com/xenolf/lego/providers/dns/googlecloud"
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"github.com/xenolf/lego/providers/dns/namecheap"
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"github.com/xenolf/lego/providers/dns/ovh"
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"github.com/xenolf/lego/providers/dns/pdns"
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"github.com/xenolf/lego/providers/dns/rfc2136"
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"github.com/xenolf/lego/providers/dns/route53"
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"github.com/xenolf/lego/providers/dns/vultr"
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@ -141,6 +142,8 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
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provider, err = vultr.NewDNSProvider()
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case "ovh":
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provider, err = ovh.NewDNSProvider()
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case "pdns":
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provider, err = pdns.NewDNSProvider()
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}
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if err != nil {
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7
providers/dns/pdns/README.md
Normal file
7
providers/dns/pdns/README.md
Normal file
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@ -0,0 +1,7 @@
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## PowerDNS provider
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Tested and confirmed to work with PowerDNS authoratative server 3.4.8 and 4.0.1. Refer to [PowerDNS documentation](https://doc.powerdns.com/md/httpapi/README/) instructions on how to enable the built-in API interface.
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PowerDNS Notes:
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- PowerDNS API does not currently support SSL, therefore you should take care to ensure that traffic between lego and the PowerDNS API is over a trusted network, VPN etc.
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- In order to have the SOA serial automatically increment each time the `_acme-challenge` record is added/modified via the API, set `SOA-API-EDIT` to `INCEPTION-INCREMENT` for the zone in the `domainmetadata` table
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343
providers/dns/pdns/pdns.go
Normal file
343
providers/dns/pdns/pdns.go
Normal file
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@ -0,0 +1,343 @@
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// Package pdns implements a DNS provider for solving the DNS-01
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// challenge using PowerDNS nameserver.
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package pdns
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"strconv"
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"strings"
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"time"
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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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apiKey string
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host *url.URL
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apiVersion int
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}
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// NewDNSProvider returns a DNSProvider instance configured for pdns.
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// Credentials must be passed in the environment variable:
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// PDNS_API_URL and PDNS_API_KEY.
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func NewDNSProvider() (*DNSProvider, error) {
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key := os.Getenv("PDNS_API_KEY")
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hostUrl, err := url.Parse(os.Getenv("PDNS_API_URL"))
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if err != nil {
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return nil, err
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}
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return NewDNSProviderCredentials(hostUrl, 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 pdns.
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func NewDNSProviderCredentials(host *url.URL, key string) (*DNSProvider, error) {
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if key == "" {
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return nil, fmt.Errorf("PDNS API key missing")
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}
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if host == nil || host.Host == "" {
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return nil, fmt.Errorf("PDNS API URL missing")
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}
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provider := &DNSProvider{
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host: host,
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apiKey: key,
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}
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provider.getAPIVersion()
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return provider, nil
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}
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// Timeout returns the timeout and interval to use when checking for DNS
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// propagation. Adjusting here to cope with spikes in propagation times.
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func (c *DNSProvider) Timeout() (timeout, interval time.Duration) {
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return 120 * time.Second, 2 * time.Second
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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, _ := acme.DNS01Record(domain, keyAuth)
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zone, err := c.getHostedZone(fqdn)
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if err != nil {
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return err
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}
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name := fqdn
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// pre-v1 API wants non-fqdn
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if c.apiVersion == 0 {
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name = acme.UnFqdn(fqdn)
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}
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rec := pdnsRecord{
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Content: "\"" + value + "\"",
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Disabled: false,
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// pre-v1 API
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Type: "TXT",
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Name: name,
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TTL: 120,
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}
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rrsets := rrSets{
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RRSets: []rrSet{
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rrSet{
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Name: name,
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ChangeType: "REPLACE",
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Type: "TXT",
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Kind: "Master",
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TTL: 120,
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Records: []pdnsRecord{rec},
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},
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},
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}
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body, err := json.Marshal(rrsets)
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if err != nil {
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return err
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}
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_, err = c.makeRequest("PATCH", zone.URL, bytes.NewReader(body))
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if err != nil {
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fmt.Println("here")
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return 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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zone, err := c.getHostedZone(fqdn)
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if err != nil {
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return err
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}
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set, err := c.findTxtRecord(fqdn)
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if err != nil {
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return err
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}
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rrsets := rrSets{
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RRSets: []rrSet{
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rrSet{
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Name: set.Name,
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Type: set.Type,
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ChangeType: "DELETE",
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},
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},
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}
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body, err := json.Marshal(rrsets)
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if err != nil {
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return err
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}
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_, err = c.makeRequest("PATCH", zone.URL, bytes.NewReader(body))
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if err != nil {
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return err
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}
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return nil
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}
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func (c *DNSProvider) getHostedZone(fqdn string) (*hostedZone, error) {
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var zone hostedZone
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authZone, err := acme.FindZoneByFqdn(fqdn, acme.RecursiveNameservers)
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if err != nil {
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return nil, err
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}
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url := "/servers/localhost/zones"
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result, err := c.makeRequest("GET", url, nil)
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if err != nil {
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return nil, err
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}
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zones := []hostedZone{}
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err = json.Unmarshal(result, &zones)
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if err != nil {
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return nil, err
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}
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url = ""
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for _, zone := range zones {
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if acme.UnFqdn(zone.Name) == acme.UnFqdn(authZone) {
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url = zone.URL
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}
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}
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result, err = c.makeRequest("GET", url, nil)
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if err != nil {
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return nil, err
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}
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err = json.Unmarshal(result, &zone)
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if err != nil {
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return nil, err
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}
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// convert pre-v1 API result
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if len(zone.Records) > 0 {
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zone.RRSets = []rrSet{}
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for _, record := range zone.Records {
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set := rrSet{
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Name: record.Name,
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Type: record.Type,
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Records: []pdnsRecord{record},
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}
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zone.RRSets = append(zone.RRSets, set)
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}
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}
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return &zone, nil
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}
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func (c *DNSProvider) findTxtRecord(fqdn string) (*rrSet, error) {
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zone, err := c.getHostedZone(fqdn)
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if err != nil {
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return nil, err
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}
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_, err = c.makeRequest("GET", zone.URL, nil)
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if err != nil {
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return nil, err
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}
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for _, set := range zone.RRSets {
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if (set.Name == acme.UnFqdn(fqdn) || set.Name == fqdn) && set.Type == "TXT" {
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return &set, nil
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}
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}
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return nil, fmt.Errorf("No existing record found for %s", fqdn)
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}
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func (c *DNSProvider) getAPIVersion() {
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type APIVersion struct {
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URL string `json:"url"`
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Version int `json:"version"`
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}
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result, err := c.makeRequest("GET", "/api", nil)
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if err != nil {
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return
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}
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var versions []APIVersion
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err = json.Unmarshal(result, &versions)
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if err != nil {
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return
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}
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latestVersion := 0
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for _, v := range versions {
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if v.Version > latestVersion {
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latestVersion = v.Version
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}
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}
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c.apiVersion = latestVersion
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}
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func (c *DNSProvider) makeRequest(method, uri string, body io.Reader) (json.RawMessage, error) {
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type APIError struct {
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Error string `json:"error"`
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}
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var path = ""
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if c.host.Path != "/" {
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path = c.host.Path
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}
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if c.apiVersion > 0 {
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if !strings.HasPrefix(uri, "api/v") {
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uri = "/api/v" + strconv.Itoa(c.apiVersion) + uri
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} else {
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uri = "/" + uri
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}
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}
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url := c.host.Scheme + "://" + c.host.Host + path + uri
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req, err := http.NewRequest(method, url, body)
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if err != nil {
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return nil, err
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}
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req.Header.Set("X-API-Key", c.apiKey)
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client := http.Client{Timeout: 30 * time.Second}
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resp, err := client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("Error talking to PDNS API -> %v", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != 422 && (resp.StatusCode < 200 || resp.StatusCode >= 300) {
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return nil, fmt.Errorf("Unexpected HTTP status code %d when fetching '%s'", resp.StatusCode, url)
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}
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var msg json.RawMessage
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err = json.NewDecoder(resp.Body).Decode(&msg)
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switch {
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case err == io.EOF:
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// empty body
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return nil, nil
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case err != nil:
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// other error
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return nil, err
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}
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// check for PowerDNS error message
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if len(msg) > 0 && msg[0] == '{' {
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var apiError APIError
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err = json.Unmarshal(msg, &apiError)
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if err != nil {
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return nil, err
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}
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if apiError.Error != "" {
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return nil, fmt.Errorf("Error talking to PDNS API -> %v", apiError.Error)
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}
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}
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return msg, nil
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}
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type pdnsRecord struct {
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Content string `json:"content"`
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Disabled bool `json:"disabled"`
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// pre-v1 API
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Name string `json:"name"`
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Type string `json:"type"`
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TTL int `json:"ttl,omitempty"`
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}
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type hostedZone struct {
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ID string `json:"id"`
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Name string `json:"name"`
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URL string `json:"url"`
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RRSets []rrSet `json:"rrsets"`
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// pre-v1 API
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Records []pdnsRecord `json:"records"`
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}
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type rrSet struct {
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Name string `json:"name"`
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Type string `json:"type"`
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Kind string `json:"kind"`
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ChangeType string `json:"changetype"`
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Records []pdnsRecord `json:"records"`
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TTL int `json:"ttl,omitempty"`
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}
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type rrSets struct {
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RRSets []rrSet `json:"rrsets"`
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}
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80
providers/dns/pdns/pdns_test.go
Normal file
80
providers/dns/pdns/pdns_test.go
Normal file
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@ -0,0 +1,80 @@
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package pdns
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import (
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"net/url"
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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var (
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pdnsLiveTest bool
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pdnsURL *url.URL
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pdnsURLStr string
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pdnsAPIKey string
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pdnsDomain string
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)
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func init() {
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pdnsURLStr = os.Getenv("PDNS_API_URL")
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pdnsURL, _ = url.Parse(pdnsURLStr)
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pdnsAPIKey = os.Getenv("PDNS_API_KEY")
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pdnsDomain = os.Getenv("PDNS_DOMAIN")
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if len(pdnsURLStr) > 0 && len(pdnsAPIKey) > 0 && len(pdnsDomain) > 0 {
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pdnsLiveTest = true
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}
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}
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func restorePdnsEnv() {
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os.Setenv("PDNS_API_URL", pdnsURLStr)
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os.Setenv("PDNS_API_KEY", pdnsAPIKey)
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}
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func TestNewDNSProviderValid(t *testing.T) {
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os.Setenv("PDNS_API_URL", "")
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os.Setenv("PDNS_API_KEY", "")
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tmpURL, _ := url.Parse("http://localhost:8081")
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_, err := NewDNSProviderCredentials(tmpURL, "123")
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assert.NoError(t, err)
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restorePdnsEnv()
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}
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func TestNewDNSProviderValidEnv(t *testing.T) {
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os.Setenv("PDNS_API_URL", "http://localhost:8081")
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os.Setenv("PDNS_API_KEY", "123")
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_, err := NewDNSProvider()
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assert.NoError(t, err)
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restorePdnsEnv()
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}
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func TestNewDNSProviderMissingHostErr(t *testing.T) {
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os.Setenv("PDNS_API_URL", "")
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os.Setenv("PDNS_API_KEY", "123")
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_, err := NewDNSProvider()
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assert.EqualError(t, err, "PDNS API URL missing")
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restorePdnsEnv()
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}
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func TestNewDNSProviderMissingKeyErr(t *testing.T) {
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os.Setenv("PDNS_API_URL", pdnsURLStr)
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os.Setenv("PDNS_API_KEY", "")
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_, err := NewDNSProvider()
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assert.EqualError(t, err, "PDNS API key missing")
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restorePdnsEnv()
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}
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func TestPdnsPresentAndCleanup(t *testing.T) {
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if !pdnsLiveTest {
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t.Skip("skipping live test")
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}
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provider, err := NewDNSProviderCredentials(pdnsURL, pdnsAPIKey)
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assert.NoError(t, err)
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err = provider.Present(pdnsDomain, "", "123d==")
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assert.NoError(t, err)
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err = provider.CleanUp(pdnsDomain, "", "123d==")
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assert.NoError(t, err)
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}
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