traefik/provider/acme/local_store.go

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package acme
import (
"encoding/json"
"fmt"
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"io/ioutil"
"os"
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"regexp"
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"sync"
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"github.com/containous/traefik/log"
"github.com/containous/traefik/safe"
)
var _ Store = (*LocalStore)(nil)
// LocalStore Stores implementation for local file
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type LocalStore struct {
filename string
storedData *StoredData
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SaveDataChan chan *StoredData `json:"-"`
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lock sync.RWMutex
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}
// NewLocalStore initializes a new LocalStore with a file name
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func NewLocalStore(filename string) *LocalStore {
store := &LocalStore{filename: filename, SaveDataChan: make(chan *StoredData)}
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store.listenSaveAction()
return store
}
func (s *LocalStore) get() (*StoredData, error) {
if s.storedData == nil {
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s.storedData = &StoredData{
HTTPChallenges: make(map[string]map[string][]byte),
TLSChallenges: make(map[string]*Certificate),
}
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hasData, err := CheckFile(s.filename)
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if err != nil {
return nil, err
}
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if hasData {
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logger := log.WithoutContext().WithField(log.ProviderName, "acme")
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f, err := os.Open(s.filename)
if err != nil {
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return nil, err
}
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defer f.Close()
file, err := ioutil.ReadAll(f)
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if err != nil {
return nil, err
}
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if len(file) > 0 {
if err := json.Unmarshal(file, s.storedData); err != nil {
return nil, err
}
}
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// Check if ACME Account is in ACME V1 format
if s.storedData.Account != nil && s.storedData.Account.Registration != nil {
isOldRegistration, err := regexp.MatchString(RegistrationURLPathV1Regexp, s.storedData.Account.Registration.URI)
if err != nil {
return nil, err
}
if isOldRegistration {
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logger.Debug("Reseting ACME account.")
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s.storedData.Account = nil
s.SaveDataChan <- s.storedData
}
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}
// Delete all certificates with no value
var certificates []*Certificate
for _, certificate := range s.storedData.Certificates {
if len(certificate.Certificate) == 0 || len(certificate.Key) == 0 {
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logger.Debugf("Deleting empty certificate %v for %v", certificate, certificate.Domain.ToStrArray())
continue
}
certificates = append(certificates, certificate)
}
if len(certificates) < len(s.storedData.Certificates) {
s.storedData.Certificates = certificates
s.SaveDataChan <- s.storedData
}
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}
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}
return s.storedData, nil
}
// listenSaveAction listens to a chan to store ACME data in json format into LocalStore.filename
func (s *LocalStore) listenSaveAction() {
safe.Go(func() {
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logger := log.WithoutContext().WithField(log.ProviderName, "acme")
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for object := range s.SaveDataChan {
data, err := json.MarshalIndent(object, "", " ")
if err != nil {
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logger.Error(err)
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}
err = ioutil.WriteFile(s.filename, data, 0600)
if err != nil {
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logger.Error(err)
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}
}
})
}
// GetAccount returns ACME Account
func (s *LocalStore) GetAccount() (*Account, error) {
storedData, err := s.get()
if err != nil {
return nil, err
}
return storedData.Account, nil
}
// SaveAccount stores ACME Account
func (s *LocalStore) SaveAccount(account *Account) error {
storedData, err := s.get()
if err != nil {
return err
}
storedData.Account = account
s.SaveDataChan <- storedData
return nil
}
// GetCertificates returns ACME Certificates list
func (s *LocalStore) GetCertificates() ([]*Certificate, error) {
storedData, err := s.get()
if err != nil {
return nil, err
}
return storedData.Certificates, nil
}
// SaveCertificates stores ACME Certificates list
func (s *LocalStore) SaveCertificates(certificates []*Certificate) error {
storedData, err := s.get()
if err != nil {
return err
}
storedData.Certificates = certificates
s.SaveDataChan <- storedData
return nil
}
// GetHTTPChallengeToken Get the http challenge token from the store
func (s *LocalStore) GetHTTPChallengeToken(token, domain string) ([]byte, error) {
s.lock.RLock()
defer s.lock.RUnlock()
if s.storedData.HTTPChallenges == nil {
s.storedData.HTTPChallenges = map[string]map[string][]byte{}
}
if _, ok := s.storedData.HTTPChallenges[token]; !ok {
return nil, fmt.Errorf("cannot find challenge for token %v", token)
}
result, ok := s.storedData.HTTPChallenges[token][domain]
if !ok {
return nil, fmt.Errorf("cannot find challenge for token %v", token)
}
return result, nil
}
// SetHTTPChallengeToken Set the http challenge token in the store
func (s *LocalStore) SetHTTPChallengeToken(token, domain string, keyAuth []byte) error {
s.lock.Lock()
defer s.lock.Unlock()
if s.storedData.HTTPChallenges == nil {
s.storedData.HTTPChallenges = map[string]map[string][]byte{}
}
if _, ok := s.storedData.HTTPChallenges[token]; !ok {
s.storedData.HTTPChallenges[token] = map[string][]byte{}
}
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s.storedData.HTTPChallenges[token][domain] = keyAuth
return nil
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}
// RemoveHTTPChallengeToken Remove the http challenge token in the store
func (s *LocalStore) RemoveHTTPChallengeToken(token, domain string) error {
s.lock.Lock()
defer s.lock.Unlock()
if s.storedData.HTTPChallenges == nil {
return nil
}
if _, ok := s.storedData.HTTPChallenges[token]; ok {
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delete(s.storedData.HTTPChallenges[token], domain)
if len(s.storedData.HTTPChallenges[token]) == 0 {
delete(s.storedData.HTTPChallenges, token)
}
}
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return nil
}
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// AddTLSChallenge Add a certificate to the ACME TLS-ALPN-01 certificates storage
func (s *LocalStore) AddTLSChallenge(domain string, cert *Certificate) error {
s.lock.Lock()
defer s.lock.Unlock()
if s.storedData.TLSChallenges == nil {
s.storedData.TLSChallenges = make(map[string]*Certificate)
}
s.storedData.TLSChallenges[domain] = cert
return nil
}
// GetTLSChallenge Get a certificate from the ACME TLS-ALPN-01 certificates storage
func (s *LocalStore) GetTLSChallenge(domain string) (*Certificate, error) {
s.lock.Lock()
defer s.lock.Unlock()
if s.storedData.TLSChallenges == nil {
s.storedData.TLSChallenges = make(map[string]*Certificate)
}
return s.storedData.TLSChallenges[domain], nil
}
// RemoveTLSChallenge Remove a certificate from the ACME TLS-ALPN-01 certificates storage
func (s *LocalStore) RemoveTLSChallenge(domain string) error {
s.lock.Lock()
defer s.lock.Unlock()
if s.storedData.TLSChallenges == nil {
return nil
}
delete(s.storedData.TLSChallenges, domain)
return nil
}