100 lines
2.5 KiB
Go
100 lines
2.5 KiB
Go
package acme
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import (
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"fmt"
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"time"
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"github.com/cenk/backoff"
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"github.com/containous/flaeg"
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"github.com/containous/traefik/log"
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"github.com/containous/traefik/safe"
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acme "github.com/xenolf/lego/acmev2"
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)
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func dnsOverrideDelay(delay flaeg.Duration) error {
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if delay == 0 {
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return nil
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}
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if delay > 0 {
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log.Debugf("Delaying %d rather than validating DNS propagation now.", delay)
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acme.PreCheckDNS = func(_, _ string) (bool, error) {
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time.Sleep(time.Duration(delay))
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return true, nil
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}
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} else {
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return fmt.Errorf("delayBeforeCheck: %d cannot be less than 0", delay)
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}
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return nil
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}
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func getTokenValue(token, domain string, store Store) []byte {
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log.Debugf("Looking for an existing ACME challenge for token %v...", token)
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var result []byte
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operation := func() error {
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var ok bool
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httpChallenges, err := store.GetHTTPChallenges()
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if err != nil {
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return fmt.Errorf("HTTPChallenges not available : %s", err)
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}
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if result, ok = httpChallenges[token][domain]; !ok {
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return fmt.Errorf("cannot find challenge for token %v", token)
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}
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return nil
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}
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notify := func(err error, time time.Duration) {
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log.Errorf("Error getting challenge for token retrying in %s", time)
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}
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ebo := backoff.NewExponentialBackOff()
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ebo.MaxElapsedTime = 60 * time.Second
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err := backoff.RetryNotify(safe.OperationWithRecover(operation), ebo, notify)
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if err != nil {
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log.Errorf("Error getting challenge for token: %v", err)
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return []byte{}
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}
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return result
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}
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func presentHTTPChallenge(domain, token, keyAuth string, store Store) error {
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httpChallenges, err := store.GetHTTPChallenges()
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if err != nil {
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return fmt.Errorf("unable to get HTTPChallenges : %s", err)
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}
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if httpChallenges == nil {
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httpChallenges = map[string]map[string][]byte{}
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}
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if _, ok := httpChallenges[token]; !ok {
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httpChallenges[token] = map[string][]byte{}
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}
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httpChallenges[token][domain] = []byte(keyAuth)
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return store.SaveHTTPChallenges(httpChallenges)
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}
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func cleanUpHTTPChallenge(domain, token string, store Store) error {
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httpChallenges, err := store.GetHTTPChallenges()
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if err != nil {
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return fmt.Errorf("unable to get HTTPChallenges : %s", err)
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}
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log.Debugf("Challenge CleanUp for domain %s", domain)
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if _, ok := httpChallenges[token]; ok {
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if _, domainOk := httpChallenges[token][domain]; domainOk {
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delete(httpChallenges[token], domain)
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}
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if len(httpChallenges[token]) == 0 {
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delete(httpChallenges, token)
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}
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return store.SaveHTTPChallenges(httpChallenges)
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}
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return nil
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}
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