e7a90b9471
- chore: update dependencies: use version with go modules. - chore: remove dep. - chore: update backoff imports. - chore: init go module. - chore: update CI. - chore: mod v3 - chore: update docker image.
155 lines
4.3 KiB
Go
155 lines
4.3 KiB
Go
// Package versio implements a DNS provider for solving the DNS-01 challenge using versio DNS.
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package versio
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import (
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"errors"
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"fmt"
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"net/http"
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"net/url"
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"sync"
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"time"
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"github.com/go-acme/lego/v3/challenge/dns01"
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"github.com/go-acme/lego/v3/platform/config/env"
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)
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// Config is used to configure the creation of the DNSProvider
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type Config struct {
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BaseURL *url.URL
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TTL int
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Username string
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Password string
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PropagationTimeout time.Duration
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PollingInterval time.Duration
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SequenceInterval time.Duration
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HTTPClient *http.Client
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}
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// NewDefaultConfig returns a default configuration for the DNSProvider
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func NewDefaultConfig() *Config {
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baseURL, err := url.Parse(env.GetOrDefaultString("VERSIO_ENDPOINT", defaultBaseURL))
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if err != nil {
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baseURL, _ = url.Parse(defaultBaseURL)
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}
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return &Config{
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BaseURL: baseURL,
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TTL: env.GetOrDefaultInt("VERSIO_TTL", 300),
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PropagationTimeout: env.GetOrDefaultSecond("VERSIO_PROPAGATION_TIMEOUT", 60*time.Second),
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PollingInterval: env.GetOrDefaultSecond("VERSIO_POLLING_INTERVAL", 5*time.Second),
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SequenceInterval: env.GetOrDefaultSecond("VERSIO_SEQUENCE_INTERVAL", dns01.DefaultPropagationTimeout),
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HTTPClient: &http.Client{
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Timeout: env.GetOrDefaultSecond("VERSIO_HTTP_TIMEOUT", 30*time.Second),
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},
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}
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}
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// DNSProvider describes a provider for acme-proxy
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type DNSProvider struct {
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config *Config
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dnsEntriesMu sync.Mutex
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}
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// NewDNSProvider returns a DNSProvider instance.
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func NewDNSProvider() (*DNSProvider, error) {
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values, err := env.Get("VERSIO_USERNAME", "VERSIO_PASSWORD")
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if err != nil {
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return nil, fmt.Errorf("versio: %v", err)
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}
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config := NewDefaultConfig()
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config.Username = values["VERSIO_USERNAME"]
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config.Password = values["VERSIO_PASSWORD"]
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return NewDNSProviderConfig(config)
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}
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// NewDNSProviderConfig return a DNSProvider .
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func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
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if config == nil {
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return nil, errors.New("versio: the configuration of the DNS provider is nil")
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}
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if config.Username == "" {
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return nil, errors.New("versio: the versio username is missing")
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}
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if config.Password == "" {
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return nil, errors.New("versio: the versio password is missing")
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}
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return &DNSProvider{config: config}, nil
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}
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// Timeout returns the timeout and interval to use when checking for DNS propagation.
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// Adjusting here to cope with spikes in propagation times.
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func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
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return d.config.PropagationTimeout, d.config.PollingInterval
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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(domain, token, keyAuth string) error {
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fqdn, value := dns01.GetRecord(domain, keyAuth)
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authZone, err := dns01.FindZoneByFqdn(fqdn)
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if err != nil {
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return fmt.Errorf("versio: %v", err)
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}
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// use mutex to prevent race condition from getDNSRecords until postDNSRecords
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d.dnsEntriesMu.Lock()
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defer d.dnsEntriesMu.Unlock()
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zoneName := dns01.UnFqdn(authZone)
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domains, err := d.getDNSRecords(zoneName)
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if err != nil {
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return fmt.Errorf("versio: %v", err)
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}
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txtRecord := record{
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Type: "TXT",
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Name: fqdn,
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Value: `"` + value + `"`,
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TTL: d.config.TTL,
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}
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// Add new txtRercord to existing array of DNSRecords
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msg := &domains.Record
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msg.DNSRecords = append(msg.DNSRecords, txtRecord)
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err = d.postDNSRecords(zoneName, msg)
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if err != nil {
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return fmt.Errorf("versio: %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 (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
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fqdn, _ := dns01.GetRecord(domain, keyAuth)
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authZone, err := dns01.FindZoneByFqdn(fqdn)
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if err != nil {
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return fmt.Errorf("versio: %v", err)
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}
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// use mutex to prevent race condition from getDNSRecords until postDNSRecords
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d.dnsEntriesMu.Lock()
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defer d.dnsEntriesMu.Unlock()
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zoneName := dns01.UnFqdn(authZone)
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domains, err := d.getDNSRecords(zoneName)
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if err != nil {
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return fmt.Errorf("versio: %v", err)
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}
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// loop through the existing entries and remove the specific record
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msg := &dnsRecord{}
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for _, e := range domains.Record.DNSRecords {
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if e.Name != fqdn {
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msg.DNSRecords = append(msg.DNSRecords, e)
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}
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}
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err = d.postDNSRecords(zoneName, msg)
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if err != nil {
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return fmt.Errorf("versio: %v", err)
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}
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return nil
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}
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