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feat: replace v1 by v2.

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Fernandez Ludovic 2018-05-27 23:55:19 +02:00 committed by Ludovic Fernandez
parent 2cdb0e9e8a
commit 76cb7789ce
42 changed files with 559 additions and 3848 deletions
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2
account.go
View file

@ -7,7 +7,7 @@ import (
"os"
"path"
"github.com/xenolf/lego/acmev2"
"github.com/xenolf/lego/acme"
)
// Account represents a users local saved credentials

3
acme/challenges.go
View file

@ -7,9 +7,6 @@ const (
// HTTP01 is the "http-01" ACME challenge https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md#http
// Note: HTTP01ChallengePath returns the URL path to fulfill this challenge
HTTP01 = Challenge("http-01")
// TLSSNI01 is the "tls-sni-01" ACME challenge https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md#tls-with-server-name-indication-tls-sni
// Note: TLSSNI01ChallengeCert returns a certificate to fulfill this challenge
TLSSNI01 = Challenge("tls-sni-01")
// DNS01 is the "dns-01" ACME challenge https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md#dns
// Note: DNS01Record returns a DNS record which will fulfill this challenge
DNS01 = Challenge("dns-01")

599
acme/client.go
View file

@ -5,13 +5,11 @@ import (
"crypto"
"crypto/x509"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
"regexp"
"strconv"
"strings"
@ -82,27 +80,26 @@ func NewClient(caDirURL string, user User, keyType KeyType) (*Client, error) {
return nil, fmt.Errorf("get directory at '%s': %v", caDirURL, err)
}
if dir.NewRegURL == "" {
if dir.NewAccountURL == "" {
return nil, errors.New("directory missing new registration URL")
}
if dir.NewAuthzURL == "" {
return nil, errors.New("directory missing new authz URL")
if dir.NewOrderURL == "" {
return nil, errors.New("directory missing new order URL")
}
if dir.NewCertURL == "" {
return nil, errors.New("directory missing new certificate URL")
}
if dir.RevokeCertURL == "" {
/*if dir.RevokeCertURL == "" {
return nil, errors.New("directory missing revoke certificate URL")
}
}*/
jws := &jws{privKey: privKey, directoryURL: caDirURL}
jws := &jws{privKey: privKey, getNonceURL: dir.NewNonceURL}
if reg := user.GetRegistration(); reg != nil {
jws.kid = reg.URI
}
// REVIEW: best possibility?
// Add all available solvers with the right index as per ACME
// spec to this map. Otherwise they won`t be found.
solvers := make(map[Challenge]solver)
solvers[HTTP01] = &httpChallenge{jws: jws, validate: validate, provider: &HTTPProviderServer{}}
solvers[TLSSNI01] = &tlsSNIChallenge{jws: jws, validate: validate, provider: &TLSProviderServer{}}
return &Client{directory: dir, user: user, jws: jws, keyType: keyType, solvers: solvers}, nil
}
@ -112,8 +109,6 @@ func (c *Client) SetChallengeProvider(challenge Challenge, p ChallengeProvider)
switch challenge {
case HTTP01:
c.solvers[challenge] = &httpChallenge{jws: c.jws, validate: validate, provider: p}
case TLSSNI01:
c.solvers[challenge] = &tlsSNIChallenge{jws: c.jws, validate: validate, provider: p}
case DNS01:
c.solvers[challenge] = &dnsChallenge{jws: c.jws, validate: validate, provider: p}
default:
@ -141,24 +136,6 @@ func (c *Client) SetHTTPAddress(iface string) error {
return nil
}
// SetTLSAddress specifies a custom interface:port to be used for TLS based challenges.
// If this option is not used, the default port 443 and all interfaces will be used.
// To only specify a port and no interface use the ":port" notation.
//
// NOTE: This REPLACES any custom TLS-SNI provider previously set by calling
// c.SetChallengeProvider with the default TLS-SNI challenge provider.
func (c *Client) SetTLSAddress(iface string) error {
host, port, err := net.SplitHostPort(iface)
if err != nil {
return err
}
if chlng, ok := c.solvers[TLSSNI01]; ok {
chlng.(*tlsSNIChallenge).provider = NewTLSProviderServer(host, port)
}
return nil
}
// ExcludeChallenges explicitly removes challenges from the pool for solving.
func (c *Client) ExcludeChallenges(challenges []Challenge) {
// Loop through all challenges and delete the requested one if found.
@ -167,61 +144,124 @@ func (c *Client) ExcludeChallenges(challenges []Challenge) {
}
}
// GetToSURL returns the current ToS URL from the Directory
func (c *Client) GetToSURL() string {
return c.directory.Meta.TermsOfService
}
// GetExternalAccountRequired returns the External Account Binding requirement of the Directory
func (c *Client) GetExternalAccountRequired() bool {
return c.directory.Meta.ExternalAccountRequired
}
// Register the current account to the ACME server.
func (c *Client) Register() (*RegistrationResource, error) {
func (c *Client) Register(tosAgreed bool) (*RegistrationResource, error) {
if c == nil || c.user == nil {
return nil, errors.New("acme: cannot register a nil client or user")
}
logf("[INFO] acme: Registering account for %s", c.user.GetEmail())
regMsg := registrationMessage{
Resource: "new-reg",
}
accMsg := accountMessage{}
if c.user.GetEmail() != "" {
regMsg.Contact = []string{"mailto:" + c.user.GetEmail()}
accMsg.Contact = []string{"mailto:" + c.user.GetEmail()}
} else {
regMsg.Contact = []string{}
accMsg.Contact = []string{}
}
accMsg.TermsOfServiceAgreed = tosAgreed
var serverReg Registration
var regURI string
hdr, err := postJSON(c.jws, c.directory.NewRegURL, regMsg, &serverReg)
var serverReg accountMessage
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, accMsg, &serverReg)
if err != nil {
remoteErr, ok := err.(RemoteError)
if ok && remoteErr.StatusCode == 409 {
regURI = hdr.Get("Location")
regMsg = registrationMessage{
Resource: "reg",
}
if hdr, err = postJSON(c.jws, regURI, regMsg, &serverReg); err != nil {
return nil, err
}
} else {
return nil, err
}
}
reg := &RegistrationResource{Body: serverReg}
links := parseLinks(hdr["Link"])
if regURI == "" {
regURI = hdr.Get("Location")
}
reg.URI = regURI
if links["terms-of-service"] != "" {
reg.TosURL = links["terms-of-service"]
}
if links["next"] != "" {
reg.NewAuthzURL = links["next"]
} else {
return nil, errors.New("acme: The server did not return 'next' link to proceed")
reg := &RegistrationResource{
URI: hdr.Get("Location"),
Body: serverReg,
}
c.jws.kid = reg.URI
return reg, nil
}
// Register the current account to the ACME server.
func (c *Client) RegisterWithExternalAccountBinding(tosAgreed bool, kid string, hmacEncoded string) (*RegistrationResource, error) {
if c == nil || c.user == nil {
return nil, errors.New("acme: cannot register a nil client or user")
}
logf("[INFO] acme: Registering account (EAB) for %s", c.user.GetEmail())
accMsg := accountMessage{}
if c.user.GetEmail() != "" {
accMsg.Contact = []string{"mailto:" + c.user.GetEmail()}
} else {
accMsg.Contact = []string{}
}
accMsg.TermsOfServiceAgreed = tosAgreed
hmac, err := base64.RawURLEncoding.DecodeString(hmacEncoded)
if err != nil {
return nil, fmt.Errorf("acme: could not decode hmac key: %s", err.Error())
}
eabJWS, err := c.jws.signEABContent(c.directory.NewAccountURL, kid, hmac)
if err != nil {
return nil, fmt.Errorf("acme: error signing eab content: %s", err.Error())
}
eabPayload := eabJWS.FullSerialize()
accMsg.ExternalAccountBinding = []byte(eabPayload)
var serverReg accountMessage
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, accMsg, &serverReg)
if err != nil {
remoteErr, ok := err.(RemoteError)
if ok && remoteErr.StatusCode == 409 {
} else {
return nil, err
}
}
reg := &RegistrationResource{
URI: hdr.Get("Location"),
Body: serverReg,
}
c.jws.kid = reg.URI
return reg, nil
}
// ResolveAccountByKey will attempt to look up an account using the given account key
// and return its registration resource.
func (c *Client) ResolveAccountByKey() (*RegistrationResource, error) {
logf("[INFO] acme: Trying to resolve account by key")
acc := accountMessage{OnlyReturnExisting: true}
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, acc, nil)
if err != nil {
return nil, err
}
accountLink := hdr.Get("Location")
if accountLink == "" {
return nil, errors.New("Server did not return the account link")
}
var retAccount accountMessage
c.jws.kid = accountLink
hdr, err = postJSON(c.jws, accountLink, accountMessage{}, &retAccount)
if err != nil {
return nil, err
}
return &RegistrationResource{URI: accountLink, Body: retAccount}, nil
}
// DeleteRegistration deletes the client's user registration from the ACME
// server.
func (c *Client) DeleteRegistration() error {
@ -230,12 +270,11 @@ func (c *Client) DeleteRegistration() error {
}
logf("[INFO] acme: Deleting account for %s", c.user.GetEmail())
regMsg := registrationMessage{
Resource: "reg",
Delete: true,
accMsg := accountMessage{
Status: "deactivated",
}
_, err := postJSON(c.jws, c.user.GetRegistration().URI, regMsg, nil)
_, err := postJSON(c.jws, c.user.GetRegistration().URI, accMsg, nil)
if err != nil {
return err
}
@ -255,46 +294,23 @@ func (c *Client) QueryRegistration() (*RegistrationResource, error) {
// Log the URL here instead of the email as the email may not be set
logf("[INFO] acme: Querying account for %s", c.user.GetRegistration().URI)
regMsg := registrationMessage{
Resource: "reg",
}
accMsg := accountMessage{}
var serverReg Registration
hdr, err := postJSON(c.jws, c.user.GetRegistration().URI, regMsg, &serverReg)
var serverReg accountMessage
_, err := postJSON(c.jws, c.user.GetRegistration().URI, accMsg, &serverReg)
if err != nil {
return nil, err
}
reg := &RegistrationResource{Body: serverReg}
links := parseLinks(hdr["Link"])
// Location: header is not returned so this needs to be populated off of
// existing URI
reg.URI = c.user.GetRegistration().URI
if links["terms-of-service"] != "" {
reg.TosURL = links["terms-of-service"]
}
if links["next"] != "" {
reg.NewAuthzURL = links["next"]
} else {
return nil, errors.New("acme: No new-authz link in response to registration query")
}
return reg, nil
}
// AgreeToTOS updates the Client registration and sends the agreement to
// the server.
func (c *Client) AgreeToTOS() error {
reg := c.user.GetRegistration()
reg.Body.Agreement = c.user.GetRegistration().TosURL
reg.Body.Resource = "reg"
_, err := postJSON(c.jws, c.user.GetRegistration().URI, c.user.GetRegistration().Body, nil)
return err
}
// ObtainCertificateForCSR tries to obtain a certificate matching the CSR passed into it.
// The domains are inferred from the CommonName and SubjectAltNames, if any. The private key
// for this CSR is not required.
@ -302,7 +318,7 @@ func (c *Client) AgreeToTOS() error {
// your issued certificate as a bundle.
// This function will never return a partial certificate. If one domain in the list fails,
// the whole certificate will fail.
func (c *Client) ObtainCertificateForCSR(csr x509.CertificateRequest, bundle bool) (CertificateResource, map[string]error) {
func (c *Client) ObtainCertificateForCSR(csr x509.CertificateRequest, bundle bool) (*CertificateResource, error) {
// figure out what domains it concerns
// start with the common name
domains := []string{csr.Subject.CommonName}
@ -327,36 +343,45 @@ DNSNames:
logf("[INFO][%s] acme: Obtaining SAN certificate given a CSR", strings.Join(domains, ", "))
}
challenges, failures := c.getChallenges(domains)
// If any challenge fails - return. Do not generate partial SAN certificates.
if len(failures) > 0 {
for _, auth := range challenges {
order, err := c.createOrderForIdentifiers(domains)
if err != nil {
return nil, err
}
authz, err := c.getAuthzForOrder(order)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
/*for _, auth := range authz {
c.disableAuthz(auth)
}*/
return nil, err
}
return CertificateResource{}, failures
}
errs := c.solveChallenges(challenges)
// If any challenge fails - return. Do not generate partial SAN certificates.
if len(errs) > 0 {
return CertificateResource{}, errs
err = c.solveChallengeForAuthz(authz)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
return nil, err
}
logf("[INFO][%s] acme: Validations succeeded; requesting certificates", strings.Join(domains, ", "))
cert, err := c.requestCertificateForCsr(challenges, bundle, csr.Raw, nil)
failures := make(ObtainError)
cert, err := c.requestCertificateForCsr(order, bundle, csr.Raw, nil)
if err != nil {
for _, chln := range challenges {
failures[chln.Domain] = err
for _, chln := range authz {
failures[chln.Identifier.Value] = err
}
}
// Add the CSR to the certificate so that it can be used for renewals.
cert.CSR = pemEncode(&csr)
// do not return an empty failures map, because
// it would still be a non-nil error value
if len(failures) > 0 {
return cert, failures
}
return cert, nil
}
// ObtainCertificate tries to obtain a single certificate using all domains passed into it.
// The first domain in domains is used for the CommonName field of the certificate, all other
@ -367,40 +392,53 @@ DNSNames:
// your issued certificate as a bundle.
// This function will never return a partial certificate. If one domain in the list fails,
// the whole certificate will fail.
func (c *Client) ObtainCertificate(domains []string, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (CertificateResource, map[string]error) {
func (c *Client) ObtainCertificate(domains []string, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (*CertificateResource, error) {
if len(domains) == 0 {
return nil, errors.New("No domains to obtain a certificate for")
}
if bundle {
logf("[INFO][%s] acme: Obtaining bundled SAN certificate", strings.Join(domains, ", "))
} else {
logf("[INFO][%s] acme: Obtaining SAN certificate", strings.Join(domains, ", "))
}
challenges, failures := c.getChallenges(domains)
// If any challenge fails - return. Do not generate partial SAN certificates.
if len(failures) > 0 {
for _, auth := range challenges {
order, err := c.createOrderForIdentifiers(domains)
if err != nil {
return nil, err
}
authz, err := c.getAuthzForOrder(order)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
/*for _, auth := range authz {
c.disableAuthz(auth)
}*/
return nil, err
}
return CertificateResource{}, failures
}
errs := c.solveChallenges(challenges)
// If any challenge fails - return. Do not generate partial SAN certificates.
if len(errs) > 0 {
return CertificateResource{}, errs
err = c.solveChallengeForAuthz(authz)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
return nil, err
}
logf("[INFO][%s] acme: Validations succeeded; requesting certificates", strings.Join(domains, ", "))
cert, err := c.requestCertificate(challenges, bundle, privKey, mustStaple)
failures := make(ObtainError)
cert, err := c.requestCertificateForOrder(order, bundle, privKey, mustStaple)
if err != nil {
for _, chln := range challenges {
failures[chln.Domain] = err
for _, auth := range authz {
failures[auth.Identifier.Value] = err
}
}
// do not return an empty failures map, because
// it would still be a non-nil error value
if len(failures) > 0 {
return cert, failures
}
return cert, nil
}
// RevokeCertificate takes a PEM encoded certificate or bundle and tries to revoke it at the CA.
func (c *Client) RevokeCertificate(certificate []byte) error {
@ -416,7 +454,7 @@ func (c *Client) RevokeCertificate(certificate []byte) error {
encodedCert := base64.URLEncoding.EncodeToString(x509Cert.Raw)
_, err = postJSON(c.jws, c.directory.RevokeCertURL, revokeCertMessage{Resource: "revoke-cert", Certificate: encodedCert}, nil)
_, err = postJSON(c.jws, c.directory.RevokeCertURL, revokeCertMessage{Certificate: encodedCert}, nil)
return err
}
@ -428,17 +466,17 @@ func (c *Client) RevokeCertificate(certificate []byte) error {
// If bundle is true, the []byte contains both the issuer certificate and
// your issued certificate as a bundle.
// For private key reuse the PrivateKey property of the passed in CertificateResource should be non-nil.
func (c *Client) RenewCertificate(cert CertificateResource, bundle, mustStaple bool) (CertificateResource, error) {
func (c *Client) RenewCertificate(cert CertificateResource, bundle, mustStaple bool) (*CertificateResource, error) {
// Input certificate is PEM encoded. Decode it here as we may need the decoded
// cert later on in the renewal process. The input may be a bundle or a single certificate.
certificates, err := parsePEMBundle(cert.Certificate)
if err != nil {
return CertificateResource{}, err
return nil, err
}
x509Cert := certificates[0]
if x509Cert.IsCA {
return CertificateResource{}, fmt.Errorf("[%s] Certificate bundle starts with a CA certificate", cert.Domain)
return nil, fmt.Errorf("[%s] Certificate bundle starts with a CA certificate", cert.Domain)
}
// This is just meant to be informal for the user.
@ -451,22 +489,21 @@ func (c *Client) RenewCertificate(cert CertificateResource, bundle, mustStaple b
if len(cert.CSR) > 0 {
csr, err := pemDecodeTox509CSR(cert.CSR)
if err != nil {
return CertificateResource{}, err
return nil, err
}
newCert, failures := c.ObtainCertificateForCSR(*csr, bundle)
return newCert, failures[cert.Domain]
return newCert, failures
}
var privKey crypto.PrivateKey
if cert.PrivateKey != nil {
privKey, err = parsePEMPrivateKey(cert.PrivateKey)
if err != nil {
return CertificateResource{}, err
return nil, err
}
}
var domains []string
var failures map[string]error
// check for SAN certificate
if len(x509Cert.DNSNames) > 1 {
domains = append(domains, x509Cert.Subject.CommonName)
@ -480,233 +517,242 @@ func (c *Client) RenewCertificate(cert CertificateResource, bundle, mustStaple b
domains = append(domains, x509Cert.Subject.CommonName)
}
newCert, failures := c.ObtainCertificate(domains, bundle, privKey, mustStaple)
return newCert, failures[cert.Domain]
newCert, err := c.ObtainCertificate(domains, bundle, privKey, mustStaple)
return newCert, err
}
func (c *Client) createOrderForIdentifiers(domains []string) (orderResource, error) {
var identifiers []identifier
for _, domain := range domains {
identifiers = append(identifiers, identifier{Type: "dns", Value: domain})
}
order := orderMessage{
Identifiers: identifiers,
}
var response orderMessage
hdr, err := postJSON(c.jws, c.directory.NewOrderURL, order, &response)
if err != nil {
return orderResource{}, err
}
orderRes := orderResource{
URL: hdr.Get("Location"),
Domains: domains,
orderMessage: response,
}
return orderRes, nil
}
// Looks through the challenge combinations to find a solvable match.
// Then solves the challenges in series and returns.
func (c *Client) solveChallenges(challenges []authorizationResource) map[string]error {
func (c *Client) solveChallengeForAuthz(authorizations []authorization) error {
failures := make(ObtainError)
// loop through the resources, basically through the domains.
failures := make(map[string]error)
for _, authz := range challenges {
if authz.Body.Status == "valid" {
for _, authz := range authorizations {
if authz.Status == "valid" {
// Boulder might recycle recent validated authz (see issue #267)
logf("[INFO][%s] acme: Authorization already valid; skipping challenge", authz.Domain)
logf("[INFO][%s] acme: Authorization already valid; skipping challenge", authz.Identifier.Value)
continue
}
// no solvers - no solving
if solvers := c.chooseSolvers(authz.Body, authz.Domain); solvers != nil {
for i, solver := range solvers {
// TODO: do not immediately fail if one domain fails to validate.
err := solver.Solve(authz.Body.Challenges[i], authz.Domain)
if i, solver := c.chooseSolver(authz, authz.Identifier.Value); solver != nil {
err := solver.Solve(authz.Challenges[i], authz.Identifier.Value)
if err != nil {
c.disableAuthz(authz)
failures[authz.Domain] = err
}
//c.disableAuthz(authz.Identifier)
failures[authz.Identifier.Value] = err
}
} else {
c.disableAuthz(authz)
failures[authz.Domain] = fmt.Errorf("[%s] acme: Could not determine solvers", authz.Domain)
//c.disableAuthz(authz)
failures[authz.Identifier.Value] = fmt.Errorf("[%s] acme: Could not determine solvers", authz.Identifier.Value)
}
}
// be careful not to return an empty failures map, for
// even an empty ObtainError is a non-nil error value
if len(failures) > 0 {
return failures
}
// Checks all combinations from the server and returns an array of
// solvers which should get executed in series.
func (c *Client) chooseSolvers(auth authorization, domain string) map[int]solver {
for _, combination := range auth.Combinations {
solvers := make(map[int]solver)
for _, idx := range combination {
if solver, ok := c.solvers[auth.Challenges[idx].Type]; ok {
solvers[idx] = solver
} else {
logf("[INFO][%s] acme: Could not find solver for: %s", domain, auth.Challenges[idx].Type)
}
}
// If we can solve the whole combination, return the solvers
if len(solvers) == len(combination) {
return solvers
}
}
return nil
}
// Checks all challenges from the server in order and returns the first matching solver.
func (c *Client) chooseSolver(auth authorization, domain string) (int, solver) {
for i, challenge := range auth.Challenges {
if solver, ok := c.solvers[Challenge(challenge.Type)]; ok {
return i, solver
}
logf("[INFO][%s] acme: Could not find solver for: %s", domain, challenge.Type)
}
return 0, nil
}
// Get the challenges needed to proof our identifier to the ACME server.
func (c *Client) getChallenges(domains []string) ([]authorizationResource, map[string]error) {
resc, errc := make(chan authorizationResource), make(chan domainError)
func (c *Client) getAuthzForOrder(order orderResource) ([]authorization, error) {
resc, errc := make(chan authorization), make(chan domainError)
delay := time.Second / overallRequestLimit
for _, domain := range domains {
for _, authzURL := range order.Authorizations {
time.Sleep(delay)
go func(domain string) {
authMsg := authorization{Resource: "new-authz", Identifier: identifier{Type: "dns", Value: domain}}
go func(authzURL string) {
var authz authorization
hdr, err := postJSON(c.jws, c.user.GetRegistration().NewAuthzURL, authMsg, &authz)
_, err := getJSON(authzURL, &authz)
if err != nil {
errc <- domainError{Domain: domain, Error: err}
errc <- domainError{Domain: authz.Identifier.Value, Error: err}
return
}
links := parseLinks(hdr["Link"])
if links["next"] == "" {
logf("[ERROR][%s] acme: Server did not provide next link to proceed", domain)
errc <- domainError{Domain: domain, Error: errors.New("Server did not provide next link to proceed")}
return
resc <- authz
}(authzURL)
}
resc <- authorizationResource{Body: authz, NewCertURL: links["next"], AuthURL: hdr.Get("Location"), Domain: domain}
}(domain)
}
responses := make(map[string]authorizationResource)
failures := make(map[string]error)
for i := 0; i < len(domains); i++ {
var responses []authorization
failures := make(ObtainError)
for i := 0; i < len(order.Authorizations); i++ {
select {
case res := <-resc:
responses[res.Domain] = res
responses = append(responses, res)
case err := <-errc:
failures[err.Domain] = err.Error
}
}
challenges := make([]authorizationResource, 0, len(responses))
for _, domain := range domains {
if challenge, ok := responses[domain]; ok {
challenges = append(challenges, challenge)
}
}
logAuthz(challenges)
logAuthz(order)
close(resc)
close(errc)
return challenges, failures
// be careful to not return an empty failures map;
// even if empty, they become non-nil error values
if len(failures) > 0 {
return responses, failures
}
return responses, nil
}
func logAuthz(authz []authorizationResource) {
for _, auth := range authz {
logf("[INFO][%s] AuthURL: %s", auth.Domain, auth.AuthURL)
func logAuthz(order orderResource) {
for i, auth := range order.Authorizations {
logf("[INFO][%s] AuthURL: %s", order.Identifiers[i].Value, auth)
}
}
// cleanAuthz loops through the passed in slice and disables any auths which are not "valid"
func (c *Client) disableAuthz(auth authorizationResource) error {
func (c *Client) disableAuthz(authURL string) error {
var disabledAuth authorization
_, err := postJSON(c.jws, auth.AuthURL, deactivateAuthMessage{Resource: "authz", Status: "deactivated"}, &disabledAuth)
_, err := postJSON(c.jws, authURL, deactivateAuthMessage{Status: "deactivated"}, &disabledAuth)
return err
}
func (c *Client) requestCertificate(authz []authorizationResource, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (CertificateResource, error) {
if len(authz) == 0 {
return CertificateResource{}, errors.New("Passed no authorizations to requestCertificate!")
}
func (c *Client) requestCertificateForOrder(order orderResource, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (*CertificateResource, error) {
var err error
if privKey == nil {
privKey, err = generatePrivateKey(c.keyType)
if err != nil {
return CertificateResource{}, err
return nil, err
}
}
// determine certificate name(s) based on the authorization resources
commonName := authz[0]
commonName := order.Domains[0]
var san []string
for _, auth := range authz[1:] {
san = append(san, auth.Domain)
for _, auth := range order.Identifiers {
san = append(san, auth.Value)
}
// TODO: should the CSR be customizable?
csr, err := generateCsr(privKey, commonName.Domain, san, mustStaple)
csr, err := generateCsr(privKey, commonName, san, mustStaple)
if err != nil {
return CertificateResource{}, err
return nil, err
}
return c.requestCertificateForCsr(authz, bundle, csr, pemEncode(privKey))
return c.requestCertificateForCsr(order, bundle, csr, pemEncode(privKey))
}
func (c *Client) requestCertificateForCsr(authz []authorizationResource, bundle bool, csr []byte, privateKeyPem []byte) (CertificateResource, error) {
commonName := authz[0]
func (c *Client) requestCertificateForCsr(order orderResource, bundle bool, csr []byte, privateKeyPem []byte) (*CertificateResource, error) {
commonName := order.Domains[0]
var authURLs []string
for _, auth := range authz[1:] {
authURLs = append(authURLs, auth.AuthURL)
csrString := base64.RawURLEncoding.EncodeToString(csr)
var retOrder orderMessage
_, error := postJSON(c.jws, order.Finalize, csrMessage{Csr: csrString}, &retOrder)
if error != nil {
return nil, error
}
csrString := base64.URLEncoding.EncodeToString(csr)
jsonBytes, err := json.Marshal(csrMessage{Resource: "new-cert", Csr: csrString, Authorizations: authURLs})
if err != nil {
return CertificateResource{}, err
}
resp, err := c.jws.post(commonName.NewCertURL, jsonBytes)
if err != nil {
return CertificateResource{}, err
if retOrder.Status == "invalid" {
return nil, error
}
certRes := CertificateResource{
Domain: commonName.Domain,
CertURL: resp.Header.Get("Location"),
Domain: commonName,
CertURL: retOrder.Certificate,
PrivateKey: privateKeyPem,
}
if retOrder.Status == "valid" {
// if the certificate is available right away, short cut!
ok, err := c.checkCertResponse(retOrder, &certRes, bundle)
if err != nil {
return nil, err
}
if ok {
return &certRes, nil
}
}
maxChecks := 1000
for i := 0; i < maxChecks; i++ {
done, err := c.checkCertResponse(resp, &certRes, bundle)
resp.Body.Close()
_, err := getJSON(order.URL, &retOrder)
if err != nil {
return CertificateResource{}, err
return nil, err
}
done, err := c.checkCertResponse(retOrder, &certRes, bundle)
if err != nil {
return nil, err
}
if done {
break
}
if i == maxChecks-1 {
return CertificateResource{}, fmt.Errorf("polled for certificate %d times; giving up", i)
}
resp, err = httpGet(certRes.CertURL)
if err != nil {
return CertificateResource{}, err
return nil, fmt.Errorf("polled for certificate %d times; giving up", i)
}
}
return certRes, nil
return &certRes, nil
}
// checkCertResponse checks resp to see if a certificate is contained in the
// response, and if so, loads it into certRes and returns true. If the cert
// is not yet ready, it returns false. This function honors the waiting period
// required by the Retry-After header of the response, if specified. This
// function may read from resp.Body but does NOT close it. The certRes input
// checkCertResponse checks to see if the certificate is ready and a link is contained in the
// response. if so, loads it into certRes and returns true. If the cert
// is not yet ready, it returns false. The certRes input
// should already have the Domain (common name) field populated. If bundle is
// true, the certificate will be bundled with the issuer's cert.
func (c *Client) checkCertResponse(resp *http.Response, certRes *CertificateResource, bundle bool) (bool, error) {
switch resp.StatusCode {
case 201, 202:
func (c *Client) checkCertResponse(order orderMessage, certRes *CertificateResource, bundle bool) (bool, error) {
switch order.Status {
case "valid":
resp, err := httpGet(order.Certificate)
if err != nil {
return false, err
}
cert, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
if err != nil {
return false, err
}
// The server returns a body with a length of zero if the
// certificate was not ready at the time this request completed.
// Otherwise the body is the certificate.
if len(cert) > 0 {
certRes.CertStableURL = resp.Header.Get("Content-Location")
certRes.AccountRef = c.user.GetRegistration().URI
issuedCert := pemEncode(derCertificateBytes(cert))
// The issuer certificate link is always supplied via an "up" link
// in the response headers of a new certificate.
links := parseLinks(resp.Header["Link"])
issuerCert, err := c.getIssuerCertificate(links["up"])
if link, ok := links["up"]; ok {
issuerCert, err := c.getIssuerCertificate(link)
if err != nil {
// If we fail to acquire the issuer cert, return the issued certificate - do not fail.
logf("[WARNING][%s] acme: Could not bundle issuer certificate: %v", certRes.Domain, err)
@ -716,31 +762,26 @@ func (c *Client) checkCertResponse(resp *http.Response, certRes *CertificateReso
// If bundle is true, we want to return a certificate bundle.
// To do this, we append the issuer cert to the issued cert.
if bundle {
issuedCert = append(issuedCert, issuerCert...)
cert = append(cert, issuerCert...)
}
certRes.IssuerCertificate = issuerCert
}
}
certRes.Certificate = issuedCert
certRes.IssuerCertificate = issuerCert
certRes.Certificate = cert
certRes.CertURL = order.Certificate
certRes.CertStableURL = order.Certificate
logf("[INFO][%s] Server responded with a certificate.", certRes.Domain)
return true, nil
}
// The certificate was granted but is not yet issued.
// Check retry-after and loop.
ra := resp.Header.Get("Retry-After")
retryAfter, err := strconv.Atoi(ra)
if err != nil {
return false, err
case "processing":
return false, nil
case "invalid":
return false, errors.New("Order has invalid state: invalid")
}
logf("[INFO][%s] acme: Server responded with status 202; retrying after %ds", certRes.Domain, retryAfter)
time.Sleep(time.Duration(retryAfter) * time.Second)
return false, nil
default:
return false, handleHTTPError(resp)
}
}
// getIssuerCertificate requests the issuer certificate
@ -786,10 +827,10 @@ func parseLinks(links []string) map[string]string {
// validate makes the ACME server start validating a
// challenge response, only returning once it is done.
func validate(j *jws, domain, uri string, chlng challenge) error {
var challengeResponse challenge
func validate(j *jws, domain, uri string, c challenge) error {
var chlng challenge
hdr, err := postJSON(j, uri, chlng, &challengeResponse)
hdr, err := postJSON(j, uri, c, &chlng)
if err != nil {
return err
}
@ -797,27 +838,27 @@ func validate(j *jws, domain, uri string, chlng challenge) error {
// After the path is sent, the ACME server will access our server.
// Repeatedly check the server for an updated status on our request.
for {
switch challengeResponse.Status {
switch chlng.Status {
case "valid":
logf("[INFO][%s] The server validated our request", domain)
return nil
case "pending":
break
case "invalid":
return handleChallengeError(challengeResponse)
return handleChallengeError(chlng)
default:
return errors.New("The server returned an unexpected state.")
return errors.New("The server returned an unexpected state")
}
ra, err := strconv.Atoi(hdr.Get("Retry-After"))
if err != nil {
// The ACME server MUST return a Retry-After.
// If it doesn't, we'll just poll hard.
ra = 1
ra = 5
}
time.Sleep(time.Duration(ra) * time.Second)
hdr, err = getJSON(uri, &challengeResponse)
hdr, err = getJSON(uri, &chlng)
if err != nil {
return err
}

105
acme/client_test.go
View file

@ -27,7 +27,13 @@ func TestNewClient(t *testing.T) {
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
data, _ := json.Marshal(directory{NewAuthzURL: "http://test", NewCertURL: "http://test", NewRegURL: "http://test", RevokeCertURL: "http://test"})
data, _ := json.Marshal(directory{
NewNonceURL: "http://test",
NewAccountURL: "http://test",
NewOrderURL: "http://test",
RevokeCertURL: "http://test",
KeyChangeURL: "http://test",
})
w.Write(data)
}))
@ -47,7 +53,7 @@ func TestNewClient(t *testing.T) {
t.Errorf("Expected keyType to be %s but was %s", keyType, client.keyType)
}
if expected, actual := 2, len(client.solvers); actual != expected {
if expected, actual := 1, len(client.solvers); actual != expected {
t.Fatalf("Expected %d solver(s), got %d", expected, actual)
}
}
@ -65,7 +71,13 @@ func TestClientOptPort(t *testing.T) {
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
data, _ := json.Marshal(directory{NewAuthzURL: "http://test", NewCertURL: "http://test", NewRegURL: "http://test", RevokeCertURL: "http://test"})
data, _ := json.Marshal(directory{
NewNonceURL: "http://test",
NewAccountURL: "http://test",
NewOrderURL: "http://test",
RevokeCertURL: "http://test",
KeyChangeURL: "http://test",
})
w.Write(data)
}))
@ -76,7 +88,6 @@ func TestClientOptPort(t *testing.T) {
t.Fatalf("Could not create client: %v", err)
}
client.SetHTTPAddress(net.JoinHostPort(optHost, optPort))
client.SetTLSAddress(net.JoinHostPort(optHost, optPort))
httpSolver, ok := client.solvers[HTTP01].(*httpChallenge)
if !ok {
@ -92,7 +103,7 @@ func TestClientOptPort(t *testing.T) {
t.Errorf("Expected http-01 to have iface %s but was %s", optHost, got)
}
httpsSolver, ok := client.solvers[TLSSNI01].(*tlsSNIChallenge)
/* httpsSolver, ok := client.solvers[TLSSNI01].(*tlsSNIChallenge)
if !ok {
t.Fatal("Expected tls-sni-01 solver to be httpChallenge type")
}
@ -104,19 +115,15 @@ func TestClientOptPort(t *testing.T) {
}
if got := httpsSolver.provider.(*TLSProviderServer).iface; got != optHost {
t.Errorf("Expected tls-sni-01 to have port %s but was %s", optHost, got)
}
} */
// test setting different host
optHost = "127.0.0.1"
client.SetHTTPAddress(net.JoinHostPort(optHost, optPort))
client.SetTLSAddress(net.JoinHostPort(optHost, optPort))
if got := httpSolver.provider.(*HTTPProviderServer).iface; got != optHost {
t.Errorf("Expected http-01 to have iface %s but was %s", optHost, got)
}
if got := httpsSolver.provider.(*TLSProviderServer).port; got != optPort {
t.Errorf("Expected tls-sni-01 to have port %s but was %s", optPort, got)
}
}
func TestNotHoldingLockWhileMakingHTTPRequests(t *testing.T) {
@ -124,12 +131,12 @@ func TestNotHoldingLockWhileMakingHTTPRequests(t *testing.T) {
time.Sleep(250 * time.Millisecond)
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
writeJSONResponse(w, &challenge{Type: "http-01", Status: "Valid", URI: "http://example.com/", Token: "token"})
writeJSONResponse(w, &challenge{Type: "http-01", Status: "Valid", URL: "http://example.com/", Token: "token"})
}))
defer ts.Close()
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey, directoryURL: ts.URL}
j := &jws{privKey: privKey, getNonceURL: ts.URL}
ch := make(chan bool)
resultCh := make(chan bool)
go func() {
@ -163,12 +170,12 @@ func TestValidate(t *testing.T) {
case "POST":
st := statuses[0]
statuses = statuses[1:]
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URI: "http://example.com/", Token: "token"})
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URL: "http://example.com/", Token: "token"})
case "GET":
st := statuses[0]
statuses = statuses[1:]
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URI: "http://example.com/", Token: "token"})
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URL: "http://example.com/", Token: "token"})
default:
http.Error(w, r.Method, http.StatusMethodNotAllowed)
@ -177,7 +184,7 @@ func TestValidate(t *testing.T) {
defer ts.Close()
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey, directoryURL: ts.URL}
j := &jws{privKey: privKey, getNonceURL: ts.URL}
tsts := []struct {
name string
@ -186,10 +193,10 @@ func TestValidate(t *testing.T) {
}{
{"POST-unexpected", []string{"weird"}, "unexpected"},
{"POST-valid", []string{"valid"}, ""},
{"POST-invalid", []string{"invalid"}, "Error Detail"},
{"POST-invalid", []string{"invalid"}, "Error"},
{"GET-unexpected", []string{"pending", "weird"}, "unexpected"},
{"GET-valid", []string{"pending", "valid"}, ""},
{"GET-invalid", []string{"pending", "invalid"}, "Error Detail"},
{"GET-invalid", []string{"pending", "invalid"}, "Error"},
}
for _, tst := range tsts {
@ -209,9 +216,15 @@ func TestGetChallenges(t *testing.T) {
case "GET", "HEAD":
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
writeJSONResponse(w, directory{NewAuthzURL: ts.URL, NewCertURL: ts.URL, NewRegURL: ts.URL, RevokeCertURL: ts.URL})
writeJSONResponse(w, directory{
NewNonceURL: ts.URL,
NewAccountURL: ts.URL,
NewOrderURL: ts.URL,
RevokeCertURL: ts.URL,
KeyChangeURL: ts.URL,
})
case "POST":
writeJSONResponse(w, authorization{})
writeJSONResponse(w, orderMessage{})
}
}))
defer ts.Close()
@ -224,7 +237,7 @@ func TestGetChallenges(t *testing.T) {
}
user := mockUser{
email: "test@test.com",
regres: &RegistrationResource{NewAuthzURL: ts.URL},
regres: &RegistrationResource{URI: ts.URL},
privatekey: key,
}
@ -233,12 +246,60 @@ func TestGetChallenges(t *testing.T) {
t.Fatalf("Could not create client: %v", err)
}
_, failures := client.getChallenges([]string{"example.com"})
if failures["example.com"] == nil {
_, err = client.createOrderForIdentifiers([]string{"example.com"})
if err != nil {
t.Fatal("Expecting \"Server did not provide next link to proceed\" error, got nil")
}
}
func TestResolveAccountByKey(t *testing.T) {
keyBits := 512
keyType := RSA2048
key, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
t.Fatal("Could not generate test key:", err)
}
user := mockUser{
email: "test@test.com",
regres: new(RegistrationResource),
privatekey: key,
}
var ts *httptest.Server
ts = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.RequestURI {
case "/directory":
writeJSONResponse(w, directory{
NewNonceURL: ts.URL + "/nonce",
NewAccountURL: ts.URL + "/account",
NewOrderURL: ts.URL + "/newOrder",
RevokeCertURL: ts.URL + "/revokeCert",
KeyChangeURL: ts.URL + "/keyChange",
})
case "/nonce":
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
case "/account":
w.Header().Set("Location", ts.URL+"/account_recovery")
case "/account_recovery":
writeJSONResponse(w, accountMessage{
Status: "valid",
})
}
}))
client, err := NewClient(ts.URL+"/directory", user, keyType)
if err != nil {
t.Fatalf("Could not create client: %v", err)
}
if res, err := client.ResolveAccountByKey(); err != nil {
t.Fatalf("Unexpected error resolving account by key: %v", err)
} else if res.Body.Status != "valid" {
t.Errorf("Unexpected account status: %v", res.Body.Status)
}
}
// writeJSONResponse marshals the body as JSON and writes it to the response.
func writeJSONResponse(w http.ResponseWriter, body interface{}) {
bs, err := json.Marshal(body)

14
acme/crypto.go
View file

@ -18,10 +18,10 @@ import (
"io/ioutil"
"math/big"
"net/http"
"strings"
"time"
"golang.org/x/crypto/ocsp"
jose "gopkg.in/square/go-jose.v2"
)
// KeyType represents the key algo as well as the key size or curve to use.
@ -135,9 +135,9 @@ func getKeyAuthorization(token string, key interface{}) (string, error) {
}
// Generate the Key Authorization for the challenge
jwk := keyAsJWK(publicKey)
jwk := &jose.JSONWebKey{Key: publicKey}
if jwk == nil {
return "", errors.New("Could not generate JWK from key.")
return "", errors.New("Could not generate JWK from key")
}
thumbBytes, err := jwk.Thumbprint(crypto.SHA256)
if err != nil {
@ -145,11 +145,7 @@ func getKeyAuthorization(token string, key interface{}) (string, error) {
}
// unpad the base64URL
keyThumb := base64.URLEncoding.EncodeToString(thumbBytes)
index := strings.Index(keyThumb, "=")
if index != -1 {
keyThumb = keyThumb[:index]
}
keyThumb := base64.RawURLEncoding.EncodeToString(thumbBytes)
return token + "." + keyThumb, nil
}
@ -176,7 +172,7 @@ func parsePEMBundle(bundle []byte) ([]*x509.Certificate, error) {
}
if len(certificates) == 0 {
return nil, errors.New("No certificates were found while parsing the bundle.")
return nil, errors.New("No certificates were found while parsing the bundle")
}
return certificates, nil

6
acme/dns_challenge.go
View file

@ -29,6 +29,7 @@ var defaultNameservers = []string{
"google-public-dns-b.google.com:53",
}
// RecursiveNameservers are used to pre-check DNS propagations
var RecursiveNameservers = getNameservers(defaultResolvConf, defaultNameservers)
// DNSTimeout is used to override the default DNS timeout of 10 seconds.
@ -57,8 +58,7 @@ func getNameservers(path string, defaults []string) []string {
func DNS01Record(domain, keyAuth string) (fqdn string, value string, ttl int) {
keyAuthShaBytes := sha256.Sum256([]byte(keyAuth))
// base64URL encoding without padding
keyAuthSha := base64.URLEncoding.EncodeToString(keyAuthShaBytes[:sha256.Size])
value = strings.TrimRight(keyAuthSha, "=")
value = base64.RawURLEncoding.EncodeToString(keyAuthShaBytes[:sha256.Size])
ttl = 120
fqdn = fmt.Sprintf("_acme-challenge.%s.", domain)
return
@ -114,7 +114,7 @@ func (s *dnsChallenge) Solve(chlng challenge, domain string) error {
return err
}
return s.validate(s.jws, domain, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
return s.validate(s.jws, domain, chlng.URL, challenge{Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}
// checkDNSPropagation checks if the expected TXT record has been propagated to all authoritative nameservers.

4
acme/dns_challenge_test.go
View file

@ -100,9 +100,9 @@ func TestDNSValidServerResponse(t *testing.T) {
}))
manualProvider, _ := NewDNSProviderManual()
jws := &jws{privKey: privKey, directoryURL: ts.URL}
jws := &jws{privKey: privKey, getNonceURL: ts.URL}
solver := &dnsChallenge{jws: jws, validate: validate, provider: manualProvider}
clientChallenge := challenge{Type: "dns01", Status: "pending", URI: ts.URL, Token: "http8"}
clientChallenge := challenge{Type: "dns01", Status: "pending", URL: ts.URL, Token: "http8"}
go func() {
time.Sleep(time.Second * 2)

33
acme/error.go
View file

@ -1,6 +1,7 @@
package acme
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
@ -9,8 +10,8 @@ import (
)
const (
tosAgreementError = "Must agree to subscriber agreement before any further actions"
invalidNonceError = "JWS has invalid anti-replay nonce"
tosAgreementError = "Terms of service have changed"
invalidNonceError = "urn:ietf:params:acme:error:badNonce"
)
// RemoteError is the base type for all errors specific to the ACME protocol.
@ -42,27 +43,23 @@ type domainError struct {
Error error
}
type challengeError struct {
RemoteError
records []validationRecord
// ObtainError is returned when there are specific errors available
// per domain. For example in ObtainCertificate
type ObtainError map[string]error
func (e ObtainError) Error() string {
buffer := bytes.NewBufferString("acme: Error -> One or more domains had a problem:\n")
for dom, err := range e {
buffer.WriteString(fmt.Sprintf("[%s] %s\n", dom, err))
}
func (c challengeError) Error() string {
var errStr string
for _, validation := range c.records {
errStr = errStr + fmt.Sprintf("\tValidation for %s:%s\n\tResolved to:\n\t\t%s\n\tUsed: %s\n\n",
validation.Hostname, validation.Port, strings.Join(validation.ResolvedAddresses, "\n\t\t"), validation.UsedAddress)
}
return fmt.Sprintf("%s\nError Detail:\n%s", c.RemoteError.Error(), errStr)
return buffer.String()
}
func handleHTTPError(resp *http.Response) error {
var errorDetail RemoteError
contentType := resp.Header.Get("Content-Type")
if contentType == "application/json" || contentType == "application/problem+json" {
if contentType == "application/json" || strings.HasPrefix(contentType, "application/problem+json") {
err := json.NewDecoder(resp.Body).Decode(&errorDetail)
if err != nil {
return err
@ -82,7 +79,7 @@ func handleHTTPError(resp *http.Response) error {
return TOSError{errorDetail}
}
if errorDetail.StatusCode == http.StatusBadRequest && strings.HasPrefix(errorDetail.Detail, invalidNonceError) {
if errorDetail.StatusCode == http.StatusBadRequest && errorDetail.Type == invalidNonceError {
return NonceError{errorDetail}
}
@ -90,5 +87,5 @@ func handleHTTPError(resp *http.Response) error {
}
func handleChallengeError(chlng challenge) error {
return challengeError{chlng.Error, chlng.ValidationRecords}
return chlng.Error
}

2
acme/http.go
View file

@ -102,7 +102,7 @@ func getJSON(uri string, respBody interface{}) (http.Header, error) {
func postJSON(j *jws, uri string, reqBody, respBody interface{}) (http.Header, error) {
jsonBytes, err := json.Marshal(reqBody)
if err != nil {
return nil, errors.New("Failed to marshal network message...")
return nil, errors.New("Failed to marshal network message")
}
resp, err := j.post(uri, jsonBytes)

2
acme/http_challenge.go
View file

@ -37,5 +37,5 @@ func (s *httpChallenge) Solve(chlng challenge, domain string) error {
}
}()
return s.validate(s.jws, domain, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
return s.validate(s.jws, domain, chlng.URL, challenge{Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}

4
acme/http_challenge_test.go
View file

@ -11,7 +11,7 @@ import (
func TestHTTPChallenge(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: HTTP01, Token: "http1"}
clientChallenge := challenge{Type: string(HTTP01), Token: "http1"}
mockValidate := func(_ *jws, _, _ string, chlng challenge) error {
uri := "http://localhost:23457/.well-known/acme-challenge/" + chlng.Token
resp, err := httpGet(uri)
@ -46,7 +46,7 @@ func TestHTTPChallenge(t *testing.T) {
func TestHTTPChallengeInvalidPort(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 128)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: HTTP01, Token: "http2"}
clientChallenge := challenge{Type: string(HTTP01), Token: "http2"}
solver := &httpChallenge{jws: j, validate: stubValidate, provider: &HTTPProviderServer{port: "123456"}}
if err := solver.Solve(clientChallenge, "localhost:123456"); err == nil {

78
acme/jws.go
View file

@ -10,37 +10,27 @@ import (
"net/http"
"sync"
"gopkg.in/square/go-jose.v1"
"gopkg.in/square/go-jose.v2"
)
type jws struct {
directoryURL string
getNonceURL string
privKey crypto.PrivateKey
kid string
nonces nonceManager
}
func keyAsJWK(key interface{}) *jose.JsonWebKey {
switch k := key.(type) {
case *ecdsa.PublicKey:
return &jose.JsonWebKey{Key: k, Algorithm: "EC"}
case *rsa.PublicKey:
return &jose.JsonWebKey{Key: k, Algorithm: "RSA"}
default:
return nil
}
}
// Posts a JWS signed message to the specified URL.
// It does NOT close the response body, so the caller must
// do that if no error was returned.
func (j *jws) post(url string, content []byte) (*http.Response, error) {
signedContent, err := j.signContent(content)
signedContent, err := j.signContent(url, content)
if err != nil {
return nil, fmt.Errorf("Failed to sign content -> %s", err.Error())
}
resp, err := httpPost(url, "application/jose+json", bytes.NewBuffer([]byte(signedContent.FullSerialize())))
data := bytes.NewBuffer([]byte(signedContent.FullSerialize()))
resp, err := httpPost(url, "application/jose+json", data)
if err != nil {
return nil, fmt.Errorf("Failed to HTTP POST to %s -> %s", url, err.Error())
}
@ -53,7 +43,7 @@ func (j *jws) post(url string, content []byte) (*http.Response, error) {
return resp, nil
}
func (j *jws) signContent(content []byte) (*jose.JsonWebSignature, error) {
func (j *jws) signContent(url string, content []byte) (*jose.JSONWebSignature, error) {
var alg jose.SignatureAlgorithm
switch k := j.privKey.(type) {
@ -67,11 +57,28 @@ func (j *jws) signContent(content []byte) (*jose.JsonWebSignature, error) {
}
}
signer, err := jose.NewSigner(alg, j.privKey)
jsonKey := jose.JSONWebKey{
Key: j.privKey,
KeyID: j.kid,
}
signKey := jose.SigningKey{
Algorithm: alg,
Key: jsonKey,
}
options := jose.SignerOptions{
NonceSource: j,
ExtraHeaders: make(map[jose.HeaderKey]interface{}),
}
options.ExtraHeaders["url"] = url
if j.kid == "" {
options.EmbedJWK = true
}
signer, err := jose.NewSigner(signKey, &options)
if err != nil {
return nil, fmt.Errorf("Failed to create jose signer -> %s", err.Error())
}
signer.SetNonceSource(j)
signed, err := signer.Sign(content)
if err != nil {
@ -80,12 +87,41 @@ func (j *jws) signContent(content []byte) (*jose.JsonWebSignature, error) {
return signed, nil
}
func (j *jws) signEABContent(url, kid string, hmac []byte) (*jose.JSONWebSignature, error) {
jwk := jose.JSONWebKey{Key: j.privKey}
jwkJSON, err := jwk.Public().MarshalJSON()
if err != nil {
return nil, fmt.Errorf("acme: error encoding eab jwk key: %s", err.Error())
}
signer, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.HS256, Key: hmac},
&jose.SignerOptions{
EmbedJWK: false,
ExtraHeaders: map[jose.HeaderKey]interface{}{
"kid": kid,
"url": url,
},
},
)
if err != nil {
return nil, fmt.Errorf("Failed to create External Account Binding jose signer -> %s", err.Error())
}
signed, err := signer.Sign(jwkJSON)
if err != nil {
return nil, fmt.Errorf("Failed to External Account Binding sign content -> %s", err.Error())
}
return signed, nil
}
func (j *jws) Nonce() (string, error) {
if nonce, ok := j.nonces.Pop(); ok {
return nonce, nil
}
return getNonce(j.directoryURL)
return getNonce(j.getNonceURL)
}
type nonceManager struct {
@ -124,7 +160,7 @@ func getNonce(url string) (string, error) {
func getNonceFromResponse(resp *http.Response) (string, error) {
nonce := resp.Header.Get("Replay-Nonce")
if nonce == "" {
return "", fmt.Errorf("Server did not respond with a proper nonce header.")
return "", fmt.Errorf("Server did not respond with a proper nonce header")
}
return nonce, nil

115
acme/messages.go
View file

@ -1,59 +1,62 @@
package acme
import (
"encoding/json"
"time"
"gopkg.in/square/go-jose.v1"
)
type directory struct {
NewAuthzURL string `json:"new-authz"`
NewCertURL string `json:"new-cert"`
NewRegURL string `json:"new-reg"`
RevokeCertURL string `json:"revoke-cert"`
}
type registrationMessage struct {
Resource string `json:"resource"`
Contact []string `json:"contact"`
Delete bool `json:"delete,omitempty"`
}
// Registration is returned by the ACME server after the registration
// The client implementation should save this registration somewhere.
type Registration struct {
Resource string `json:"resource,omitempty"`
ID int `json:"id"`
Key jose.JsonWebKey `json:"key"`
Contact []string `json:"contact"`
Agreement string `json:"agreement,omitempty"`
Authorizations string `json:"authorizations,omitempty"`
Certificates string `json:"certificates,omitempty"`
}
// RegistrationResource represents all important informations about a registration
// of which the client needs to keep track itself.
type RegistrationResource struct {
Body Registration `json:"body,omitempty"`
Body accountMessage `json:"body,omitempty"`
URI string `json:"uri,omitempty"`
NewAuthzURL string `json:"new_authzr_uri,omitempty"`
TosURL string `json:"terms_of_service,omitempty"`
}
type authorizationResource struct {
Body authorization
Domain string
NewCertURL string
AuthURL string
type directory struct {
NewNonceURL string `json:"newNonce"`
NewAccountURL string `json:"newAccount"`
NewOrderURL string `json:"newOrder"`
RevokeCertURL string `json:"revokeCert"`
KeyChangeURL string `json:"keyChange"`
Meta struct {
TermsOfService string `json:"termsOfService"`
Website string `json:"website"`
CaaIdentities []string `json:"caaIdentities"`
ExternalAccountRequired bool `json:"externalAccountRequired"`
} `json:"meta"`
}
type accountMessage struct {
Status string `json:"status,omitempty"`
Contact []string `json:"contact,omitempty"`
TermsOfServiceAgreed bool `json:"termsOfServiceAgreed,omitempty"`
Orders string `json:"orders,omitempty"`
OnlyReturnExisting bool `json:"onlyReturnExisting,omitempty"`
ExternalAccountBinding json.RawMessage `json:"externalAccountBinding,omitempty"`
}
type orderResource struct {
URL string `json:"url,omitempty"`
Domains []string `json:"domains,omitempty"`
orderMessage `json:"body,omitempty"`
}
type orderMessage struct {
Status string `json:"status,omitempty"`
Expires string `json:"expires,omitempty"`
Identifiers []identifier `json:"identifiers"`
NotBefore string `json:"notBefore,omitempty"`
NotAfter string `json:"notAfter,omitempty"`
Authorizations []string `json:"authorizations,omitempty"`
Finalize string `json:"finalize,omitempty"`
Certificate string `json:"certificate,omitempty"`
}
type authorization struct {
Resource string `json:"resource,omitempty"`
Status string `json:"status"`
Expires time.Time `json:"expires"`
Identifier identifier `json:"identifier"`
Status string `json:"status,omitempty"`
Expires time.Time `json:"expires,omitempty"`
Challenges []challenge `json:"challenges,omitempty"`
Combinations [][]int `json:"combinations,omitempty"`
Challenges []challenge `json:"challenges"`
}
type identifier struct {
@ -61,40 +64,28 @@ type identifier struct {
Value string `json:"value"`
}
type validationRecord struct {
URI string `json:"url,omitempty"`
Hostname string `json:"hostname,omitempty"`
Port string `json:"port,omitempty"`
ResolvedAddresses []string `json:"addressesResolved,omitempty"`
UsedAddress string `json:"addressUsed,omitempty"`
}
type challenge struct {
Resource string `json:"resource,omitempty"`
Type Challenge `json:"type,omitempty"`
Status string `json:"status,omitempty"`
URI string `json:"uri,omitempty"`
Token string `json:"token,omitempty"`
KeyAuthorization string `json:"keyAuthorization,omitempty"`
TLS bool `json:"tls,omitempty"`
Iterations int `json:"n,omitempty"`
Error RemoteError `json:"error,omitempty"`
ValidationRecords []validationRecord `json:"validationRecord,omitempty"`
URL string `json:"url"`
Type string `json:"type"`
Status string `json:"status"`
Token string `json:"token"`
Validated time.Time `json:"validated"`
KeyAuthorization string `json:"keyAuthorization"`
Error RemoteError `json:"error"`
}
type csrMessage struct {
Resource string `json:"resource,omitempty"`
Csr string `json:"csr"`
Authorizations []string `json:"authorizations"`
}
type emptyObjectMessage struct {
}
type revokeCertMessage struct {
Resource string `json:"resource"`
Certificate string `json:"certificate"`
}
type deactivateAuthMessage struct {
Resource string `json:"resource,omitempty"`
Status string `jsom:"status"`
}

67
acme/tls_sni_challenge.go
View file

@ -1,67 +0,0 @@
package acme
import (
"crypto/rsa"
"crypto/sha256"
"crypto/tls"
"encoding/hex"
"fmt"
"log"
)
type tlsSNIChallenge struct {
jws *jws
validate validateFunc
provider ChallengeProvider
}
func (t *tlsSNIChallenge) Solve(chlng challenge, domain string) error {
// FIXME: https://github.com/ietf-wg-acme/acme/pull/22
// Currently we implement this challenge to track boulder, not the current spec!
logf("[INFO][%s] acme: Trying to solve TLS-SNI-01", domain)
// Generate the Key Authorization for the challenge
keyAuth, err := getKeyAuthorization(chlng.Token, t.jws.privKey)
if err != nil {
return err
}
err = t.provider.Present(domain, chlng.Token, keyAuth)
if err != nil {
return fmt.Errorf("[%s] error presenting token: %v", domain, err)
}
defer func() {
err := t.provider.CleanUp(domain, chlng.Token, keyAuth)
if err != nil {
log.Printf("[%s] error cleaning up: %v", domain, err)
}
}()
return t.validate(t.jws, domain, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}
// TLSSNI01ChallengeCert returns a certificate and target domain for the `tls-sni-01` challenge
func TLSSNI01ChallengeCert(keyAuth string) (tls.Certificate, string, error) {
// generate a new RSA key for the certificates
tempPrivKey, err := generatePrivateKey(RSA2048)
if err != nil {
return tls.Certificate{}, "", err
}
rsaPrivKey := tempPrivKey.(*rsa.PrivateKey)
rsaPrivPEM := pemEncode(rsaPrivKey)
zBytes := sha256.Sum256([]byte(keyAuth))
z := hex.EncodeToString(zBytes[:sha256.Size])
domain := fmt.Sprintf("%s.%s.acme.invalid", z[:32], z[32:])
tempCertPEM, err := generatePemCert(rsaPrivKey, domain)
if err != nil {
return tls.Certificate{}, "", err
}
certificate, err := tls.X509KeyPair(tempCertPEM, rsaPrivPEM)
if err != nil {
return tls.Certificate{}, "", err
}
return certificate, domain, nil
}

62
acme/tls_sni_challenge_server.go
View file

@ -1,62 +0,0 @@
package acme
import (
"crypto/tls"
"fmt"
"net"
"net/http"
)
// TLSProviderServer implements ChallengeProvider for `TLS-SNI-01` challenge
// It may be instantiated without using the NewTLSProviderServer function if
// you want only to use the default values.
type TLSProviderServer struct {
iface string
port string
done chan bool
listener net.Listener
}
// NewTLSProviderServer creates a new TLSProviderServer on the selected interface and port.
// Setting iface and / or port to an empty string will make the server fall back to
// the "any" interface and port 443 respectively.
func NewTLSProviderServer(iface, port string) *TLSProviderServer {
return &TLSProviderServer{iface: iface, port: port}
}
// Present makes the keyAuth available as a cert
func (s *TLSProviderServer) Present(domain, token, keyAuth string) error {
if s.port == "" {
s.port = "443"
}
cert, _, err := TLSSNI01ChallengeCert(keyAuth)
if err != nil {
return err
}
tlsConf := new(tls.Config)
tlsConf.Certificates = []tls.Certificate{cert}
s.listener, err = tls.Listen("tcp", net.JoinHostPort(s.iface, s.port), tlsConf)
if err != nil {
return fmt.Errorf("Could not start HTTPS server for challenge -> %v", err)
}
s.done = make(chan bool)
go func() {
http.Serve(s.listener, nil)
s.done <- true
}()
return nil
}
// CleanUp closes the HTTP server.
func (s *TLSProviderServer) CleanUp(domain, token, keyAuth string) error {
if s.listener == nil {
return nil
}
s.listener.Close()
<-s.done
return nil
}

65
acme/tls_sni_challenge_test.go
View file

@ -1,65 +0,0 @@
package acme
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"crypto/tls"
"encoding/hex"
"fmt"
"strings"
"testing"
)
func TestTLSSNIChallenge(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: TLSSNI01, Token: "tlssni1"}
mockValidate := func(_ *jws, _, _ string, chlng challenge) error {
conn, err := tls.Dial("tcp", "localhost:23457", &tls.Config{
InsecureSkipVerify: true,
})
if err != nil {
t.Errorf("Expected to connect to challenge server without an error. %s", err.Error())
}
// Expect the server to only return one certificate
connState := conn.ConnectionState()
if count := len(connState.PeerCertificates); count != 1 {
t.Errorf("Expected the challenge server to return exactly one certificate but got %d", count)
}
remoteCert := connState.PeerCertificates[0]
if count := len(remoteCert.DNSNames); count != 1 {
t.Errorf("Expected the challenge certificate to have exactly one DNSNames entry but had %d", count)
}
zBytes := sha256.Sum256([]byte(chlng.KeyAuthorization))
z := hex.EncodeToString(zBytes[:sha256.Size])
domain := fmt.Sprintf("%s.%s.acme.invalid", z[:32], z[32:])
if remoteCert.DNSNames[0] != domain {
t.Errorf("Expected the challenge certificate DNSName to match %s but was %s", domain, remoteCert.DNSNames[0])
}
return nil
}
solver := &tlsSNIChallenge{jws: j, validate: mockValidate, provider: &TLSProviderServer{port: "23457"}}
if err := solver.Solve(clientChallenge, "localhost:23457"); err != nil {
t.Errorf("Solve error: got %v, want nil", err)
}
}
func TestTLSSNIChallengeInvalidPort(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 128)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: TLSSNI01, Token: "tlssni2"}
solver := &tlsSNIChallenge{jws: j, validate: stubValidate, provider: &TLSProviderServer{port: "123456"}}
if err := solver.Solve(clientChallenge, "localhost:123456"); err == nil {
t.Errorf("Solve error: got %v, want error", err)
} else if want, want18 := "invalid port 123456", "123456: invalid port"; !strings.HasSuffix(err.Error(), want) && !strings.HasSuffix(err.Error(), want18) {
t.Errorf("Solve error: got %q, want suffix %q", err.Error(), want)
}
}

13
acmev2/challenges.go
View file

@ -1,13 +0,0 @@
package acme
// Challenge is a string that identifies a particular type and version of ACME challenge.
type Challenge string
const (
// HTTP01 is the "http-01" ACME challenge https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md#http
// Note: HTTP01ChallengePath returns the URL path to fulfill this challenge
HTTP01 = Challenge("http-01")
// DNS01 is the "dns-01" ACME challenge https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md#dns
// Note: DNS01Record returns a DNS record which will fulfill this challenge
DNS01 = Challenge("dns-01")
)

867
acmev2/client.go
View file

@ -1,867 +0,0 @@
// Package acme implements the ACME protocol for Let's Encrypt and other conforming providers.
package acme
import (
"crypto"
"crypto/x509"
"encoding/base64"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"regexp"
"strconv"
"strings"
"time"
)
var (
// Logger is an optional custom logger.
Logger *log.Logger
)
const (
// maxBodySize is the maximum size of body that we will read.
maxBodySize = 1024 * 1024
// overallRequestLimit is the overall number of request per second limited on the
// “new-reg”, “new-authz” and “new-cert” endpoints. From the documentation the
// limitation is 20 requests per second, but using 20 as value doesn't work but 18 do
overallRequestLimit = 18
)
// logf writes a log entry. It uses Logger if not
// nil, otherwise it uses the default log.Logger.
func logf(format string, args ...interface{}) {
if Logger != nil {
Logger.Printf(format, args...)
} else {
log.Printf(format, args...)
}
}
// User interface is to be implemented by users of this library.
// It is used by the client type to get user specific information.
type User interface {
GetEmail() string
GetRegistration() *RegistrationResource
GetPrivateKey() crypto.PrivateKey
}
// Interface for all challenge solvers to implement.
type solver interface {
Solve(challenge challenge, domain string) error
}
type validateFunc func(j *jws, domain, uri string, chlng challenge) error
// Client is the user-friendy way to ACME
type Client struct {
directory directory
user User
jws *jws
keyType KeyType
solvers map[Challenge]solver
}
// NewClient creates a new ACME client on behalf of the user. The client will depend on
// the ACME directory located at caDirURL for the rest of its actions. A private
// key of type keyType (see KeyType contants) will be generated when requesting a new
// certificate if one isn't provided.
func NewClient(caDirURL string, user User, keyType KeyType) (*Client, error) {
privKey := user.GetPrivateKey()
if privKey == nil {
return nil, errors.New("private key was nil")
}
var dir directory
if _, err := getJSON(caDirURL, &dir); err != nil {
return nil, fmt.Errorf("get directory at '%s': %v", caDirURL, err)
}
if dir.NewAccountURL == "" {
return nil, errors.New("directory missing new registration URL")
}
if dir.NewOrderURL == "" {
return nil, errors.New("directory missing new order URL")
}
/*if dir.RevokeCertURL == "" {
return nil, errors.New("directory missing revoke certificate URL")
}*/
jws := &jws{privKey: privKey, getNonceURL: dir.NewNonceURL}
if reg := user.GetRegistration(); reg != nil {
jws.kid = reg.URI
}
// REVIEW: best possibility?
// Add all available solvers with the right index as per ACME
// spec to this map. Otherwise they won`t be found.
solvers := make(map[Challenge]solver)
solvers[HTTP01] = &httpChallenge{jws: jws, validate: validate, provider: &HTTPProviderServer{}}
return &Client{directory: dir, user: user, jws: jws, keyType: keyType, solvers: solvers}, nil
}
// SetChallengeProvider specifies a custom provider p that can solve the given challenge type.
func (c *Client) SetChallengeProvider(challenge Challenge, p ChallengeProvider) error {
switch challenge {
case HTTP01:
c.solvers[challenge] = &httpChallenge{jws: c.jws, validate: validate, provider: p}
case DNS01:
c.solvers[challenge] = &dnsChallenge{jws: c.jws, validate: validate, provider: p}
default:
return fmt.Errorf("Unknown challenge %v", challenge)
}
return nil
}
// SetHTTPAddress specifies a custom interface:port to be used for HTTP based challenges.
// If this option is not used, the default port 80 and all interfaces will be used.
// To only specify a port and no interface use the ":port" notation.
//
// NOTE: This REPLACES any custom HTTP provider previously set by calling
// c.SetChallengeProvider with the default HTTP challenge provider.
func (c *Client) SetHTTPAddress(iface string) error {
host, port, err := net.SplitHostPort(iface)
if err != nil {
return err
}
if chlng, ok := c.solvers[HTTP01]; ok {
chlng.(*httpChallenge).provider = NewHTTPProviderServer(host, port)
}
return nil
}
// ExcludeChallenges explicitly removes challenges from the pool for solving.
func (c *Client) ExcludeChallenges(challenges []Challenge) {
// Loop through all challenges and delete the requested one if found.
for _, challenge := range challenges {
delete(c.solvers, challenge)
}
}
// GetToSURL returns the current ToS URL from the Directory
func (c *Client) GetToSURL() string {
return c.directory.Meta.TermsOfService
}
// GetExternalAccountRequired returns the External Account Binding requirement of the Directory
func (c *Client) GetExternalAccountRequired() bool {
return c.directory.Meta.ExternalAccountRequired
}
// Register the current account to the ACME server.
func (c *Client) Register(tosAgreed bool) (*RegistrationResource, error) {
if c == nil || c.user == nil {
return nil, errors.New("acme: cannot register a nil client or user")
}
logf("[INFO] acme: Registering account for %s", c.user.GetEmail())
accMsg := accountMessage{}
if c.user.GetEmail() != "" {
accMsg.Contact = []string{"mailto:" + c.user.GetEmail()}
} else {
accMsg.Contact = []string{}
}
accMsg.TermsOfServiceAgreed = tosAgreed
var serverReg accountMessage
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, accMsg, &serverReg)
if err != nil {
remoteErr, ok := err.(RemoteError)
if ok && remoteErr.StatusCode == 409 {
} else {
return nil, err
}
}
reg := &RegistrationResource{
URI: hdr.Get("Location"),
Body: serverReg,
}
c.jws.kid = reg.URI
return reg, nil
}
// Register the current account to the ACME server.
func (c *Client) RegisterWithExternalAccountBinding(tosAgreed bool, kid string, hmacEncoded string) (*RegistrationResource, error) {
if c == nil || c.user == nil {
return nil, errors.New("acme: cannot register a nil client or user")
}
logf("[INFO] acme: Registering account (EAB) for %s", c.user.GetEmail())
accMsg := accountMessage{}
if c.user.GetEmail() != "" {
accMsg.Contact = []string{"mailto:" + c.user.GetEmail()}
} else {
accMsg.Contact = []string{}
}
accMsg.TermsOfServiceAgreed = tosAgreed
hmac, err := base64.RawURLEncoding.DecodeString(hmacEncoded)
if err != nil {
return nil, fmt.Errorf("acme: could not decode hmac key: %s", err.Error())
}
eabJWS, err := c.jws.signEABContent(c.directory.NewAccountURL, kid, hmac)
if err != nil {
return nil, fmt.Errorf("acme: error signing eab content: %s", err.Error())
}
eabPayload := eabJWS.FullSerialize()
accMsg.ExternalAccountBinding = []byte(eabPayload)
var serverReg accountMessage
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, accMsg, &serverReg)
if err != nil {
remoteErr, ok := err.(RemoteError)
if ok && remoteErr.StatusCode == 409 {
} else {
return nil, err
}
}
reg := &RegistrationResource{
URI: hdr.Get("Location"),
Body: serverReg,
}
c.jws.kid = reg.URI
return reg, nil
}
// ResolveAccountByKey will attempt to look up an account using the given account key
// and return its registration resource.
func (c *Client) ResolveAccountByKey() (*RegistrationResource, error) {
logf("[INFO] acme: Trying to resolve account by key")
acc := accountMessage{OnlyReturnExisting: true}
hdr, err := postJSON(c.jws, c.directory.NewAccountURL, acc, nil)
if err != nil {
return nil, err
}
accountLink := hdr.Get("Location")
if accountLink == "" {
return nil, errors.New("Server did not return the account link")
}
var retAccount accountMessage
c.jws.kid = accountLink
hdr, err = postJSON(c.jws, accountLink, accountMessage{}, &retAccount)
if err != nil {
return nil, err
}
return &RegistrationResource{URI: accountLink, Body: retAccount}, nil
}
// DeleteRegistration deletes the client's user registration from the ACME
// server.
func (c *Client) DeleteRegistration() error {
if c == nil || c.user == nil {
return errors.New("acme: cannot unregister a nil client or user")
}
logf("[INFO] acme: Deleting account for %s", c.user.GetEmail())
accMsg := accountMessage{
Status: "deactivated",
}
_, err := postJSON(c.jws, c.user.GetRegistration().URI, accMsg, nil)
if err != nil {
return err
}
return nil
}
// QueryRegistration runs a POST request on the client's registration and
// returns the result.
//
// This is similar to the Register function, but acting on an existing
// registration link and resource.
func (c *Client) QueryRegistration() (*RegistrationResource, error) {
if c == nil || c.user == nil {
return nil, errors.New("acme: cannot query the registration of a nil client or user")
}
// Log the URL here instead of the email as the email may not be set
logf("[INFO] acme: Querying account for %s", c.user.GetRegistration().URI)
accMsg := accountMessage{}
var serverReg accountMessage
_, err := postJSON(c.jws, c.user.GetRegistration().URI, accMsg, &serverReg)
if err != nil {
return nil, err
}
reg := &RegistrationResource{Body: serverReg}
// Location: header is not returned so this needs to be populated off of
// existing URI
reg.URI = c.user.GetRegistration().URI
return reg, nil
}
// ObtainCertificateForCSR tries to obtain a certificate matching the CSR passed into it.
// The domains are inferred from the CommonName and SubjectAltNames, if any. The private key
// for this CSR is not required.
// If bundle is true, the []byte contains both the issuer certificate and
// your issued certificate as a bundle.
// This function will never return a partial certificate. If one domain in the list fails,
// the whole certificate will fail.
func (c *Client) ObtainCertificateForCSR(csr x509.CertificateRequest, bundle bool) (*CertificateResource, error) {
// figure out what domains it concerns
// start with the common name
domains := []string{csr.Subject.CommonName}
// loop over the SubjectAltName DNS names
DNSNames:
for _, sanName := range csr.DNSNames {
for _, existingName := range domains {
if existingName == sanName {
// duplicate; skip this name
continue DNSNames
}
}
// name is unique
domains = append(domains, sanName)
}
if bundle {
logf("[INFO][%s] acme: Obtaining bundled SAN certificate given a CSR", strings.Join(domains, ", "))
} else {
logf("[INFO][%s] acme: Obtaining SAN certificate given a CSR", strings.Join(domains, ", "))
}
order, err := c.createOrderForIdentifiers(domains)
if err != nil {
return nil, err
}
authz, err := c.getAuthzForOrder(order)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
/*for _, auth := range authz {
c.disableAuthz(auth)
}*/
return nil, err
}
err = c.solveChallengeForAuthz(authz)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
return nil, err
}
logf("[INFO][%s] acme: Validations succeeded; requesting certificates", strings.Join(domains, ", "))
failures := make(ObtainError)
cert, err := c.requestCertificateForCsr(order, bundle, csr.Raw, nil)
if err != nil {
for _, chln := range authz {
failures[chln.Identifier.Value] = err
}
}
// Add the CSR to the certificate so that it can be used for renewals.
cert.CSR = pemEncode(&csr)
// do not return an empty failures map, because
// it would still be a non-nil error value
if len(failures) > 0 {
return cert, failures
}
return cert, nil
}
// ObtainCertificate tries to obtain a single certificate using all domains passed into it.
// The first domain in domains is used for the CommonName field of the certificate, all other
// domains are added using the Subject Alternate Names extension. A new private key is generated
// for every invocation of this function. If you do not want that you can supply your own private key
// in the privKey parameter. If this parameter is non-nil it will be used instead of generating a new one.
// If bundle is true, the []byte contains both the issuer certificate and
// your issued certificate as a bundle.
// This function will never return a partial certificate. If one domain in the list fails,
// the whole certificate will fail.
func (c *Client) ObtainCertificate(domains []string, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (*CertificateResource, error) {
if len(domains) == 0 {
return nil, errors.New("No domains to obtain a certificate for")
}
if bundle {
logf("[INFO][%s] acme: Obtaining bundled SAN certificate", strings.Join(domains, ", "))
} else {
logf("[INFO][%s] acme: Obtaining SAN certificate", strings.Join(domains, ", "))
}
order, err := c.createOrderForIdentifiers(domains)
if err != nil {
return nil, err
}
authz, err := c.getAuthzForOrder(order)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
/*for _, auth := range authz {
c.disableAuthz(auth)
}*/
return nil, err
}
err = c.solveChallengeForAuthz(authz)
if err != nil {
// If any challenge fails, return. Do not generate partial SAN certificates.
return nil, err
}
logf("[INFO][%s] acme: Validations succeeded; requesting certificates", strings.Join(domains, ", "))
failures := make(ObtainError)
cert, err := c.requestCertificateForOrder(order, bundle, privKey, mustStaple)
if err != nil {
for _, auth := range authz {
failures[auth.Identifier.Value] = err
}
}
// do not return an empty failures map, because
// it would still be a non-nil error value
if len(failures) > 0 {
return cert, failures
}
return cert, nil
}
// RevokeCertificate takes a PEM encoded certificate or bundle and tries to revoke it at the CA.
func (c *Client) RevokeCertificate(certificate []byte) error {
certificates, err := parsePEMBundle(certificate)
if err != nil {
return err
}
x509Cert := certificates[0]
if x509Cert.IsCA {
return fmt.Errorf("Certificate bundle starts with a CA certificate")
}
encodedCert := base64.URLEncoding.EncodeToString(x509Cert.Raw)
_, err = postJSON(c.jws, c.directory.RevokeCertURL, revokeCertMessage{Certificate: encodedCert}, nil)
return err
}
// RenewCertificate takes a CertificateResource and tries to renew the certificate.
// If the renewal process succeeds, the new certificate will ge returned in a new CertResource.
// Please be aware that this function will return a new certificate in ANY case that is not an error.
// If the server does not provide us with a new cert on a GET request to the CertURL
// this function will start a new-cert flow where a new certificate gets generated.
// If bundle is true, the []byte contains both the issuer certificate and
// your issued certificate as a bundle.
// For private key reuse the PrivateKey property of the passed in CertificateResource should be non-nil.
func (c *Client) RenewCertificate(cert CertificateResource, bundle, mustStaple bool) (*CertificateResource, error) {
// Input certificate is PEM encoded. Decode it here as we may need the decoded
// cert later on in the renewal process. The input may be a bundle or a single certificate.
certificates, err := parsePEMBundle(cert.Certificate)
if err != nil {
return nil, err
}
x509Cert := certificates[0]
if x509Cert.IsCA {
return nil, fmt.Errorf("[%s] Certificate bundle starts with a CA certificate", cert.Domain)
}
// This is just meant to be informal for the user.
timeLeft := x509Cert.NotAfter.Sub(time.Now().UTC())
logf("[INFO][%s] acme: Trying renewal with %d hours remaining", cert.Domain, int(timeLeft.Hours()))
// We always need to request a new certificate to renew.
// Start by checking to see if the certificate was based off a CSR, and
// use that if it's defined.
if len(cert.CSR) > 0 {
csr, err := pemDecodeTox509CSR(cert.CSR)
if err != nil {
return nil, err
}
newCert, failures := c.ObtainCertificateForCSR(*csr, bundle)
return newCert, failures
}
var privKey crypto.PrivateKey
if cert.PrivateKey != nil {
privKey, err = parsePEMPrivateKey(cert.PrivateKey)
if err != nil {
return nil, err
}
}
var domains []string
// check for SAN certificate
if len(x509Cert.DNSNames) > 1 {
domains = append(domains, x509Cert.Subject.CommonName)
for _, sanDomain := range x509Cert.DNSNames {
if sanDomain == x509Cert.Subject.CommonName {
continue
}
domains = append(domains, sanDomain)
}
} else {
domains = append(domains, x509Cert.Subject.CommonName)
}
newCert, err := c.ObtainCertificate(domains, bundle, privKey, mustStaple)
return newCert, err
}
func (c *Client) createOrderForIdentifiers(domains []string) (orderResource, error) {
var identifiers []identifier
for _, domain := range domains {
identifiers = append(identifiers, identifier{Type: "dns", Value: domain})
}
order := orderMessage{
Identifiers: identifiers,
}
var response orderMessage
hdr, err := postJSON(c.jws, c.directory.NewOrderURL, order, &response)
if err != nil {
return orderResource{}, err
}
orderRes := orderResource{
URL: hdr.Get("Location"),
Domains: domains,
orderMessage: response,
}
return orderRes, nil
}
// Looks through the challenge combinations to find a solvable match.
// Then solves the challenges in series and returns.
func (c *Client) solveChallengeForAuthz(authorizations []authorization) error {
failures := make(ObtainError)
// loop through the resources, basically through the domains.
for _, authz := range authorizations {
if authz.Status == "valid" {
// Boulder might recycle recent validated authz (see issue #267)
logf("[INFO][%s] acme: Authorization already valid; skipping challenge", authz.Identifier.Value)
continue
}
// no solvers - no solving
if i, solver := c.chooseSolver(authz, authz.Identifier.Value); solver != nil {
err := solver.Solve(authz.Challenges[i], authz.Identifier.Value)
if err != nil {
//c.disableAuthz(authz.Identifier)
failures[authz.Identifier.Value] = err
}
} else {
//c.disableAuthz(authz)
failures[authz.Identifier.Value] = fmt.Errorf("[%s] acme: Could not determine solvers", authz.Identifier.Value)
}
}
// be careful not to return an empty failures map, for
// even an empty ObtainError is a non-nil error value
if len(failures) > 0 {
return failures
}
return nil
}
// Checks all challenges from the server in order and returns the first matching solver.
func (c *Client) chooseSolver(auth authorization, domain string) (int, solver) {
for i, challenge := range auth.Challenges {
if solver, ok := c.solvers[Challenge(challenge.Type)]; ok {
return i, solver
}
logf("[INFO][%s] acme: Could not find solver for: %s", domain, challenge.Type)
}
return 0, nil
}
// Get the challenges needed to proof our identifier to the ACME server.
func (c *Client) getAuthzForOrder(order orderResource) ([]authorization, error) {
resc, errc := make(chan authorization), make(chan domainError)
delay := time.Second / overallRequestLimit
for _, authzURL := range order.Authorizations {
time.Sleep(delay)
go func(authzURL string) {
var authz authorization
_, err := getJSON(authzURL, &authz)
if err != nil {
errc <- domainError{Domain: authz.Identifier.Value, Error: err}
return
}
resc <- authz
}(authzURL)
}
var responses []authorization
failures := make(ObtainError)
for i := 0; i < len(order.Authorizations); i++ {
select {
case res := <-resc:
responses = append(responses, res)
case err := <-errc:
failures[err.Domain] = err.Error
}
}
logAuthz(order)
close(resc)
close(errc)
// be careful to not return an empty failures map;
// even if empty, they become non-nil error values
if len(failures) > 0 {
return responses, failures
}
return responses, nil
}
func logAuthz(order orderResource) {
for i, auth := range order.Authorizations {
logf("[INFO][%s] AuthURL: %s", order.Identifiers[i].Value, auth)
}
}
// cleanAuthz loops through the passed in slice and disables any auths which are not "valid"
func (c *Client) disableAuthz(authURL string) error {
var disabledAuth authorization
_, err := postJSON(c.jws, authURL, deactivateAuthMessage{Status: "deactivated"}, &disabledAuth)
return err
}
func (c *Client) requestCertificateForOrder(order orderResource, bundle bool, privKey crypto.PrivateKey, mustStaple bool) (*CertificateResource, error) {
var err error
if privKey == nil {
privKey, err = generatePrivateKey(c.keyType)
if err != nil {
return nil, err
}
}
// determine certificate name(s) based on the authorization resources
commonName := order.Domains[0]
var san []string
for _, auth := range order.Identifiers {
san = append(san, auth.Value)
}
// TODO: should the CSR be customizable?
csr, err := generateCsr(privKey, commonName, san, mustStaple)
if err != nil {
return nil, err
}
return c.requestCertificateForCsr(order, bundle, csr, pemEncode(privKey))
}
func (c *Client) requestCertificateForCsr(order orderResource, bundle bool, csr []byte, privateKeyPem []byte) (*CertificateResource, error) {
commonName := order.Domains[0]
csrString := base64.RawURLEncoding.EncodeToString(csr)
var retOrder orderMessage
_, error := postJSON(c.jws, order.Finalize, csrMessage{Csr: csrString}, &retOrder)
if error != nil {
return nil, error
}
if retOrder.Status == "invalid" {
return nil, error
}
certRes := CertificateResource{
Domain: commonName,
CertURL: retOrder.Certificate,
PrivateKey: privateKeyPem,
}
if retOrder.Status == "valid" {
// if the certificate is available right away, short cut!
ok, err := c.checkCertResponse(retOrder, &certRes, bundle)
if err != nil {
return nil, err
}
if ok {
return &certRes, nil
}
}
maxChecks := 1000
for i := 0; i < maxChecks; i++ {
_, err := getJSON(order.URL, &retOrder)
if err != nil {
return nil, err
}
done, err := c.checkCertResponse(retOrder, &certRes, bundle)
if err != nil {
return nil, err
}
if done {
break
}
if i == maxChecks-1 {
return nil, fmt.Errorf("polled for certificate %d times; giving up", i)
}
}
return &certRes, nil
}
// checkCertResponse checks to see if the certificate is ready and a link is contained in the
// response. if so, loads it into certRes and returns true. If the cert
// is not yet ready, it returns false. The certRes input
// should already have the Domain (common name) field populated. If bundle is
// true, the certificate will be bundled with the issuer's cert.
func (c *Client) checkCertResponse(order orderMessage, certRes *CertificateResource, bundle bool) (bool, error) {
switch order.Status {
case "valid":
resp, err := httpGet(order.Certificate)
if err != nil {
return false, err
}
cert, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
if err != nil {
return false, err
}
// The issuer certificate link is always supplied via an "up" link
// in the response headers of a new certificate.
links := parseLinks(resp.Header["Link"])
if link, ok := links["up"]; ok {
issuerCert, err := c.getIssuerCertificate(link)
if err != nil {
// If we fail to acquire the issuer cert, return the issued certificate - do not fail.
logf("[WARNING][%s] acme: Could not bundle issuer certificate: %v", certRes.Domain, err)
} else {
issuerCert = pemEncode(derCertificateBytes(issuerCert))
// If bundle is true, we want to return a certificate bundle.
// To do this, we append the issuer cert to the issued cert.
if bundle {
cert = append(cert, issuerCert...)
}
certRes.IssuerCertificate = issuerCert
}
}
certRes.Certificate = cert
certRes.CertURL = order.Certificate
certRes.CertStableURL = order.Certificate
logf("[INFO][%s] Server responded with a certificate.", certRes.Domain)
return true, nil
case "processing":
return false, nil
case "invalid":
return false, errors.New("Order has invalid state: invalid")
}
return false, nil
}
// getIssuerCertificate requests the issuer certificate
func (c *Client) getIssuerCertificate(url string) ([]byte, error) {
logf("[INFO] acme: Requesting issuer cert from %s", url)
resp, err := httpGet(url)
if err != nil {
return nil, err
}
defer resp.Body.Close()
issuerBytes, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
if err != nil {
return nil, err
}
_, err = x509.ParseCertificate(issuerBytes)
if err != nil {
return nil, err
}
return issuerBytes, err
}
func parseLinks(links []string) map[string]string {
aBrkt := regexp.MustCompile("[<>]")
slver := regexp.MustCompile("(.+) *= *\"(.+)\"")
linkMap := make(map[string]string)
for _, link := range links {
link = aBrkt.ReplaceAllString(link, "")
parts := strings.Split(link, ";")
matches := slver.FindStringSubmatch(parts[1])
if len(matches) > 0 {
linkMap[matches[2]] = parts[0]
}
}
return linkMap
}
// validate makes the ACME server start validating a
// challenge response, only returning once it is done.
func validate(j *jws, domain, uri string, c challenge) error {
var chlng challenge
hdr, err := postJSON(j, uri, c, &chlng)
if err != nil {
return err
}
// After the path is sent, the ACME server will access our server.
// Repeatedly check the server for an updated status on our request.
for {
switch chlng.Status {
case "valid":
logf("[INFO][%s] The server validated our request", domain)
return nil
case "pending":
break
case "invalid":
return handleChallengeError(chlng)
default:
return errors.New("The server returned an unexpected state")
}
ra, err := strconv.Atoi(hdr.Get("Retry-After"))
if err != nil {
// The ACME server MUST return a Retry-After.
// If it doesn't, we'll just poll hard.
ra = 5
}
time.Sleep(time.Duration(ra) * time.Second)
hdr, err = getJSON(uri, &chlng)
if err != nil {
return err
}
}
}

330
acmev2/client_test.go
View file

@ -1,330 +0,0 @@
package acme
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"encoding/json"
"net"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
)
func TestNewClient(t *testing.T) {
keyBits := 32 // small value keeps test fast
keyType := RSA2048
key, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
t.Fatal("Could not generate test key:", err)
}
user := mockUser{
email: "test@test.com",
regres: new(RegistrationResource),
privatekey: key,
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
data, _ := json.Marshal(directory{
NewNonceURL: "http://test",
NewAccountURL: "http://test",
NewOrderURL: "http://test",
RevokeCertURL: "http://test",
KeyChangeURL: "http://test",
})
w.Write(data)
}))
client, err := NewClient(ts.URL, user, keyType)
if err != nil {
t.Fatalf("Could not create client: %v", err)
}
if client.jws == nil {
t.Fatalf("Expected client.jws to not be nil")
}
if expected, actual := key, client.jws.privKey; actual != expected {
t.Errorf("Expected jws.privKey to be %p but was %p", expected, actual)
}
if client.keyType != keyType {
t.Errorf("Expected keyType to be %s but was %s", keyType, client.keyType)
}
if expected, actual := 1, len(client.solvers); actual != expected {
t.Fatalf("Expected %d solver(s), got %d", expected, actual)
}
}
func TestClientOptPort(t *testing.T) {
keyBits := 32 // small value keeps test fast
key, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
t.Fatal("Could not generate test key:", err)
}
user := mockUser{
email: "test@test.com",
regres: new(RegistrationResource),
privatekey: key,
}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
data, _ := json.Marshal(directory{
NewNonceURL: "http://test",
NewAccountURL: "http://test",
NewOrderURL: "http://test",
RevokeCertURL: "http://test",
KeyChangeURL: "http://test",
})
w.Write(data)
}))
optPort := "1234"
optHost := ""
client, err := NewClient(ts.URL, user, RSA2048)
if err != nil {
t.Fatalf("Could not create client: %v", err)
}
client.SetHTTPAddress(net.JoinHostPort(optHost, optPort))
httpSolver, ok := client.solvers[HTTP01].(*httpChallenge)
if !ok {
t.Fatal("Expected http-01 solver to be httpChallenge type")
}
if httpSolver.jws != client.jws {
t.Error("Expected http-01 to have same jws as client")
}
if got := httpSolver.provider.(*HTTPProviderServer).port; got != optPort {
t.Errorf("Expected http-01 to have port %s but was %s", optPort, got)
}
if got := httpSolver.provider.(*HTTPProviderServer).iface; got != optHost {
t.Errorf("Expected http-01 to have iface %s but was %s", optHost, got)
}
/* httpsSolver, ok := client.solvers[TLSSNI01].(*tlsSNIChallenge)
if !ok {
t.Fatal("Expected tls-sni-01 solver to be httpChallenge type")
}
if httpsSolver.jws != client.jws {
t.Error("Expected tls-sni-01 to have same jws as client")
}
if got := httpsSolver.provider.(*TLSProviderServer).port; got != optPort {
t.Errorf("Expected tls-sni-01 to have port %s but was %s", optPort, got)
}
if got := httpsSolver.provider.(*TLSProviderServer).iface; got != optHost {
t.Errorf("Expected tls-sni-01 to have port %s but was %s", optHost, got)
} */
// test setting different host
optHost = "127.0.0.1"
client.SetHTTPAddress(net.JoinHostPort(optHost, optPort))
if got := httpSolver.provider.(*HTTPProviderServer).iface; got != optHost {
t.Errorf("Expected http-01 to have iface %s but was %s", optHost, got)
}
}
func TestNotHoldingLockWhileMakingHTTPRequests(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
time.Sleep(250 * time.Millisecond)
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
writeJSONResponse(w, &challenge{Type: "http-01", Status: "Valid", URL: "http://example.com/", Token: "token"})
}))
defer ts.Close()
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey, getNonceURL: ts.URL}
ch := make(chan bool)
resultCh := make(chan bool)
go func() {
j.Nonce()
ch <- true
}()
go func() {
j.Nonce()
ch <- true
}()
go func() {
<-ch
<-ch
resultCh <- true
}()
select {
case <-resultCh:
case <-time.After(400 * time.Millisecond):
t.Fatal("JWS is probably holding a lock while making HTTP request")
}
}
func TestValidate(t *testing.T) {
var statuses []string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Minimal stub ACME server for validation.
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
switch r.Method {
case "HEAD":
case "POST":
st := statuses[0]
statuses = statuses[1:]
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URL: "http://example.com/", Token: "token"})
case "GET":
st := statuses[0]
statuses = statuses[1:]
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URL: "http://example.com/", Token: "token"})
default:
http.Error(w, r.Method, http.StatusMethodNotAllowed)
}
}))
defer ts.Close()
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey, getNonceURL: ts.URL}
tsts := []struct {
name string
statuses []string
want string
}{
{"POST-unexpected", []string{"weird"}, "unexpected"},
{"POST-valid", []string{"valid"}, ""},
{"POST-invalid", []string{"invalid"}, "Error"},
{"GET-unexpected", []string{"pending", "weird"}, "unexpected"},
{"GET-valid", []string{"pending", "valid"}, ""},
{"GET-invalid", []string{"pending", "invalid"}, "Error"},
}
for _, tst := range tsts {
statuses = tst.statuses
if err := validate(j, "example.com", ts.URL, challenge{Type: "http-01", Token: "token"}); err == nil && tst.want != "" {
t.Errorf("[%s] validate: got error %v, want something with %q", tst.name, err, tst.want)
} else if err != nil && !strings.Contains(err.Error(), tst.want) {
t.Errorf("[%s] validate: got error %v, want something with %q", tst.name, err, tst.want)
}
}
}
func TestGetChallenges(t *testing.T) {
var ts *httptest.Server
ts = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case "GET", "HEAD":
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
writeJSONResponse(w, directory{
NewNonceURL: ts.URL,
NewAccountURL: ts.URL,
NewOrderURL: ts.URL,
RevokeCertURL: ts.URL,
KeyChangeURL: ts.URL,
})
case "POST":
writeJSONResponse(w, orderMessage{})
}
}))
defer ts.Close()
keyBits := 512 // small value keeps test fast
keyType := RSA2048
key, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
t.Fatal("Could not generate test key:", err)
}
user := mockUser{
email: "test@test.com",
regres: &RegistrationResource{URI: ts.URL},
privatekey: key,
}
client, err := NewClient(ts.URL, user, keyType)
if err != nil {
t.Fatalf("Could not create client: %v", err)
}
_, err = client.createOrderForIdentifiers([]string{"example.com"})
if err != nil {
t.Fatal("Expecting \"Server did not provide next link to proceed\" error, got nil")
}
}
func TestResolveAccountByKey(t *testing.T) {
keyBits := 512
keyType := RSA2048
key, err := rsa.GenerateKey(rand.Reader, keyBits)
if err != nil {
t.Fatal("Could not generate test key:", err)
}
user := mockUser{
email: "test@test.com",
regres: new(RegistrationResource),
privatekey: key,
}
var ts *httptest.Server
ts = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.RequestURI {
case "/directory":
writeJSONResponse(w, directory{
NewNonceURL: ts.URL + "/nonce",
NewAccountURL: ts.URL + "/account",
NewOrderURL: ts.URL + "/newOrder",
RevokeCertURL: ts.URL + "/revokeCert",
KeyChangeURL: ts.URL + "/keyChange",
})
case "/nonce":
w.Header().Add("Replay-Nonce", "12345")
w.Header().Add("Retry-After", "0")
case "/account":
w.Header().Set("Location", ts.URL+"/account_recovery")
case "/account_recovery":
writeJSONResponse(w, accountMessage{
Status: "valid",
})
}
}))
client, err := NewClient(ts.URL+"/directory", user, keyType)
if err != nil {
t.Fatalf("Could not create client: %v", err)
}
if res, err := client.ResolveAccountByKey(); err != nil {
t.Fatalf("Unexpected error resolving account by key: %v", err)
} else if res.Body.Status != "valid" {
t.Errorf("Unexpected account status: %v", res.Body.Status)
}
}
// writeJSONResponse marshals the body as JSON and writes it to the response.
func writeJSONResponse(w http.ResponseWriter, body interface{}) {
bs, err := json.Marshal(body)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
if _, err := w.Write(bs); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
// stubValidate is like validate, except it does nothing.
func stubValidate(j *jws, domain, uri string, chlng challenge) error {
return nil
}
type mockUser struct {
email string
regres *RegistrationResource
privatekey *rsa.PrivateKey
}
func (u mockUser) GetEmail() string { return u.email }
func (u mockUser) GetRegistration() *RegistrationResource { return u.regres }
func (u mockUser) GetPrivateKey() crypto.PrivateKey { return u.privatekey }

342
acmev2/crypto.go
View file

@ -1,342 +0,0 @@
package acme
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/asn1"
"encoding/base64"
"encoding/pem"
"errors"
"fmt"
"io"
"io/ioutil"
"math/big"
"net/http"
"time"
"golang.org/x/crypto/ocsp"
jose "gopkg.in/square/go-jose.v2"
)
// KeyType represents the key algo as well as the key size or curve to use.
type KeyType string
type derCertificateBytes []byte
// Constants for all key types we support.
const (
EC256 = KeyType("P256")
EC384 = KeyType("P384")
RSA2048 = KeyType("2048")
RSA4096 = KeyType("4096")
RSA8192 = KeyType("8192")
)
const (
// OCSPGood means that the certificate is valid.
OCSPGood = ocsp.Good
// OCSPRevoked means that the certificate has been deliberately revoked.
OCSPRevoked = ocsp.Revoked
// OCSPUnknown means that the OCSP responder doesn't know about the certificate.
OCSPUnknown = ocsp.Unknown
// OCSPServerFailed means that the OCSP responder failed to process the request.
OCSPServerFailed = ocsp.ServerFailed
)
// Constants for OCSP must staple
var (
tlsFeatureExtensionOID = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 1, 24}
ocspMustStapleFeature = []byte{0x30, 0x03, 0x02, 0x01, 0x05}
)
// GetOCSPForCert takes a PEM encoded cert or cert bundle returning the raw OCSP response,
// the parsed response, and an error, if any. The returned []byte can be passed directly
// into the OCSPStaple property of a tls.Certificate. If the bundle only contains the
// issued certificate, this function will try to get the issuer certificate from the
// IssuingCertificateURL in the certificate. If the []byte and/or ocsp.Response return
// values are nil, the OCSP status may be assumed OCSPUnknown.
func GetOCSPForCert(bundle []byte) ([]byte, *ocsp.Response, error) {
certificates, err := parsePEMBundle(bundle)
if err != nil {
return nil, nil, err
}
// We expect the certificate slice to be ordered downwards the chain.
// SRV CRT -> CA. We need to pull the leaf and issuer certs out of it,
// which should always be the first two certificates. If there's no
// OCSP server listed in the leaf cert, there's nothing to do. And if
// we have only one certificate so far, we need to get the issuer cert.
issuedCert := certificates[0]
if len(issuedCert.OCSPServer) == 0 {
return nil, nil, errors.New("no OCSP server specified in cert")
}
if len(certificates) == 1 {
// TODO: build fallback. If this fails, check the remaining array entries.
if len(issuedCert.IssuingCertificateURL) == 0 {
return nil, nil, errors.New("no issuing certificate URL")
}
resp, err := httpGet(issuedCert.IssuingCertificateURL[0])
if err != nil {
return nil, nil, err
}
defer resp.Body.Close()
issuerBytes, err := ioutil.ReadAll(limitReader(resp.Body, 1024*1024))
if err != nil {
return nil, nil, err
}
issuerCert, err := x509.ParseCertificate(issuerBytes)
if err != nil {
return nil, nil, err
}
// Insert it into the slice on position 0
// We want it ordered right SRV CRT -> CA
certificates = append(certificates, issuerCert)
}
issuerCert := certificates[1]
// Finally kick off the OCSP request.
ocspReq, err := ocsp.CreateRequest(issuedCert, issuerCert, nil)
if err != nil {
return nil, nil, err
}
reader := bytes.NewReader(ocspReq)
req, err := httpPost(issuedCert.OCSPServer[0], "application/ocsp-request", reader)
if err != nil {
return nil, nil, err
}
defer req.Body.Close()
ocspResBytes, err := ioutil.ReadAll(limitReader(req.Body, 1024*1024))
ocspRes, err := ocsp.ParseResponse(ocspResBytes, issuerCert)
if err != nil {
return nil, nil, err
}
return ocspResBytes, ocspRes, nil
}
func getKeyAuthorization(token string, key interface{}) (string, error) {
var publicKey crypto.PublicKey
switch k := key.(type) {
case *ecdsa.PrivateKey:
publicKey = k.Public()
case *rsa.PrivateKey:
publicKey = k.Public()
}
// Generate the Key Authorization for the challenge
jwk := &jose.JSONWebKey{Key: publicKey}
if jwk == nil {
return "", errors.New("Could not generate JWK from key")
}
thumbBytes, err := jwk.Thumbprint(crypto.SHA256)
if err != nil {
return "", err
}
// unpad the base64URL
keyThumb := base64.RawURLEncoding.EncodeToString(thumbBytes)
return token + "." + keyThumb, nil
}
// parsePEMBundle parses a certificate bundle from top to bottom and returns
// a slice of x509 certificates. This function will error if no certificates are found.
func parsePEMBundle(bundle []byte) ([]*x509.Certificate, error) {
var certificates []*x509.Certificate
var certDERBlock *pem.Block
for {
certDERBlock, bundle = pem.Decode(bundle)
if certDERBlock == nil {
break
}
if certDERBlock.Type == "CERTIFICATE" {
cert, err := x509.ParseCertificate(certDERBlock.Bytes)
if err != nil {
return nil, err
}
certificates = append(certificates, cert)
}
}
if len(certificates) == 0 {
return nil, errors.New("No certificates were found while parsing the bundle")
}
return certificates, nil
}
func parsePEMPrivateKey(key []byte) (crypto.PrivateKey, error) {
keyBlock, _ := pem.Decode(key)
switch keyBlock.Type {
case "RSA PRIVATE KEY":
return x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
case "EC PRIVATE KEY":
return x509.ParseECPrivateKey(keyBlock.Bytes)
default:
return nil, errors.New("Unknown PEM header value")
}
}
func generatePrivateKey(keyType KeyType) (crypto.PrivateKey, error) {
switch keyType {
case EC256:
return ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
case EC384:
return ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
case RSA2048:
return rsa.GenerateKey(rand.Reader, 2048)
case RSA4096:
return rsa.GenerateKey(rand.Reader, 4096)
case RSA8192:
return rsa.GenerateKey(rand.Reader, 8192)
}
return nil, fmt.Errorf("Invalid KeyType: %s", keyType)
}
func generateCsr(privateKey crypto.PrivateKey, domain string, san []string, mustStaple bool) ([]byte, error) {
template := x509.CertificateRequest{
Subject: pkix.Name{
CommonName: domain,
},
}
if len(san) > 0 {
template.DNSNames = san
}
if mustStaple {
template.ExtraExtensions = append(template.ExtraExtensions, pkix.Extension{
Id: tlsFeatureExtensionOID,
Value: ocspMustStapleFeature,
})
}
return x509.CreateCertificateRequest(rand.Reader, &template, privateKey)
}
func pemEncode(data interface{}) []byte {
var pemBlock *pem.Block
switch key := data.(type) {
case *ecdsa.PrivateKey:
keyBytes, _ := x509.MarshalECPrivateKey(key)
pemBlock = &pem.Block{Type: "EC PRIVATE KEY", Bytes: keyBytes}
case *rsa.PrivateKey:
pemBlock = &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)}
break
case *x509.CertificateRequest:
pemBlock = &pem.Block{Type: "CERTIFICATE REQUEST", Bytes: key.Raw}
break
case derCertificateBytes:
pemBlock = &pem.Block{Type: "CERTIFICATE", Bytes: []byte(data.(derCertificateBytes))}
}
return pem.EncodeToMemory(pemBlock)
}
func pemDecode(data []byte) (*pem.Block, error) {
pemBlock, _ := pem.Decode(data)
if pemBlock == nil {
return nil, fmt.Errorf("Pem decode did not yield a valid block. Is the certificate in the right format?")
}
return pemBlock, nil
}
func pemDecodeTox509(pem []byte) (*x509.Certificate, error) {
pemBlock, err := pemDecode(pem)
if pemBlock == nil {
return nil, err
}
return x509.ParseCertificate(pemBlock.Bytes)
}
func pemDecodeTox509CSR(pem []byte) (*x509.CertificateRequest, error) {
pemBlock, err := pemDecode(pem)
if pemBlock == nil {
return nil, err
}
if pemBlock.Type != "CERTIFICATE REQUEST" {
return nil, fmt.Errorf("PEM block is not a certificate request")
}
return x509.ParseCertificateRequest(pemBlock.Bytes)
}
// GetPEMCertExpiration returns the "NotAfter" date of a PEM encoded certificate.
// The certificate has to be PEM encoded. Any other encodings like DER will fail.
func GetPEMCertExpiration(cert []byte) (time.Time, error) {
pemBlock, err := pemDecode(cert)
if pemBlock == nil {
return time.Time{}, err
}
return getCertExpiration(pemBlock.Bytes)
}
// getCertExpiration returns the "NotAfter" date of a DER encoded certificate.
func getCertExpiration(cert []byte) (time.Time, error) {
pCert, err := x509.ParseCertificate(cert)
if err != nil {
return time.Time{}, err
}
return pCert.NotAfter, nil
}
func generatePemCert(privKey *rsa.PrivateKey, domain string) ([]byte, error) {
derBytes, err := generateDerCert(privKey, time.Time{}, domain)
if err != nil {
return nil, err
}
return pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: derBytes}), nil
}
func generateDerCert(privKey *rsa.PrivateKey, expiration time.Time, domain string) ([]byte, error) {
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return nil, err
}
if expiration.IsZero() {
expiration = time.Now().Add(365)
}
template := x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
CommonName: "ACME Challenge TEMP",
},
NotBefore: time.Now(),
NotAfter: expiration,
KeyUsage: x509.KeyUsageKeyEncipherment,
BasicConstraintsValid: true,
DNSNames: []string{domain},
}
return x509.CreateCertificate(rand.Reader, &template, &template, &privKey.PublicKey, privKey)
}
func limitReader(rd io.ReadCloser, numBytes int64) io.ReadCloser {
return http.MaxBytesReader(nil, rd, numBytes)
}

93
acmev2/crypto_test.go
View file

@ -1,93 +0,0 @@
package acme
import (
"bytes"
"crypto/rand"
"crypto/rsa"
"testing"
"time"
)
func TestGeneratePrivateKey(t *testing.T) {
key, err := generatePrivateKey(RSA2048)
if err != nil {
t.Error("Error generating private key:", err)
}
if key == nil {
t.Error("Expected key to not be nil, but it was")
}
}
func TestGenerateCSR(t *testing.T) {
key, err := rsa.GenerateKey(rand.Reader, 512)
if err != nil {
t.Fatal("Error generating private key:", err)
}
csr, err := generateCsr(key, "fizz.buzz", nil, true)
if err != nil {
t.Error("Error generating CSR:", err)
}
if csr == nil || len(csr) == 0 {
t.Error("Expected CSR with data, but it was nil or length 0")
}
}
func TestPEMEncode(t *testing.T) {
buf := bytes.NewBufferString("TestingRSAIsSoMuchFun")
reader := MockRandReader{b: buf}
key, err := rsa.GenerateKey(reader, 32)
if err != nil {
t.Fatal("Error generating private key:", err)
}
data := pemEncode(key)
if data == nil {
t.Fatal("Expected result to not be nil, but it was")
}
if len(data) != 127 {
t.Errorf("Expected PEM encoding to be length 127, but it was %d", len(data))
}
}
func TestPEMCertExpiration(t *testing.T) {
privKey, err := generatePrivateKey(RSA2048)
if err != nil {
t.Fatal("Error generating private key:", err)
}
expiration := time.Now().Add(365)
expiration = expiration.Round(time.Second)
certBytes, err := generateDerCert(privKey.(*rsa.PrivateKey), expiration, "test.com")
if err != nil {
t.Fatal("Error generating cert:", err)
}
buf := bytes.NewBufferString("TestingRSAIsSoMuchFun")
// Some random string should return an error.
if ctime, err := GetPEMCertExpiration(buf.Bytes()); err == nil {
t.Errorf("Expected getCertExpiration to return an error for garbage string but returned %v", ctime)
}
// A DER encoded certificate should return an error.
if _, err := GetPEMCertExpiration(certBytes); err == nil {
t.Errorf("Expected getCertExpiration to return an error for DER certificates but returned none.")
}
// A PEM encoded certificate should work ok.
pemCert := pemEncode(derCertificateBytes(certBytes))
if ctime, err := GetPEMCertExpiration(pemCert); err != nil || !ctime.Equal(expiration.UTC()) {
t.Errorf("Expected getCertExpiration to return %v but returned %v. Error: %v", expiration, ctime, err)
}
}
type MockRandReader struct {
b *bytes.Buffer
}
func (r MockRandReader) Read(p []byte) (int, error) {
return r.b.Read(p)
}

309
acmev2/dns_challenge.go
View file

@ -1,309 +0,0 @@
package acme
import (
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
"log"
"net"
"strings"
"time"
"github.com/miekg/dns"
)
type preCheckDNSFunc func(fqdn, value string) (bool, error)
var (
// PreCheckDNS checks DNS propagation before notifying ACME that
// the DNS challenge is ready.
PreCheckDNS preCheckDNSFunc = checkDNSPropagation
fqdnToZone = map[string]string{}
)
const defaultResolvConf = "/etc/resolv.conf"
var defaultNameservers = []string{
"google-public-dns-a.google.com:53",
"google-public-dns-b.google.com:53",
}
// RecursiveNameservers are used to pre-check DNS propagations
var RecursiveNameservers = getNameservers(defaultResolvConf, defaultNameservers)
// DNSTimeout is used to override the default DNS timeout of 10 seconds.
var DNSTimeout = 10 * time.Second
// getNameservers attempts to get systems nameservers before falling back to the defaults
func getNameservers(path string, defaults []string) []string {
config, err := dns.ClientConfigFromFile(path)
if err != nil || len(config.Servers) == 0 {
return defaults
}
systemNameservers := []string{}
for _, server := range config.Servers {
// ensure all servers have a port number
if _, _, err := net.SplitHostPort(server); err != nil {
systemNameservers = append(systemNameservers, net.JoinHostPort(server, "53"))
} else {
systemNameservers = append(systemNameservers, server)
}
}
return systemNameservers
}
// DNS01Record returns a DNS record which will fulfill the `dns-01` challenge
func DNS01Record(domain, keyAuth string) (fqdn string, value string, ttl int) {
keyAuthShaBytes := sha256.Sum256([]byte(keyAuth))
// base64URL encoding without padding
value = base64.RawURLEncoding.EncodeToString(keyAuthShaBytes[:sha256.Size])
ttl = 120
fqdn = fmt.Sprintf("_acme-challenge.%s.", domain)
return
}
// dnsChallenge implements the dns-01 challenge according to ACME 7.5
type dnsChallenge struct {
jws *jws
validate validateFunc
provider ChallengeProvider
}
func (s *dnsChallenge) Solve(chlng challenge, domain string) error {
logf("[INFO][%s] acme: Trying to solve DNS-01", domain)
if s.provider == nil {
return errors.New("No DNS Provider configured")
}
// Generate the Key Authorization for the challenge
keyAuth, err := getKeyAuthorization(chlng.Token, s.jws.privKey)
if err != nil {
return err
}
err = s.provider.Present(domain, chlng.Token, keyAuth)
if err != nil {
return fmt.Errorf("Error presenting token: %s", err)
}
defer func() {
err := s.provider.CleanUp(domain, chlng.Token, keyAuth)
if err != nil {
log.Printf("Error cleaning up %s: %v ", domain, err)
}
}()
fqdn, value, _ := DNS01Record(domain, keyAuth)
logf("[INFO][%s] Checking DNS record propagation using %+v", domain, RecursiveNameservers)
var timeout, interval time.Duration
switch provider := s.provider.(type) {
case ChallengeProviderTimeout:
timeout, interval = provider.Timeout()
default:
timeout, interval = 60*time.Second, 2*time.Second
}
err = WaitFor(timeout, interval, func() (bool, error) {
return PreCheckDNS(fqdn, value)
})
if err != nil {
return err
}
return s.validate(s.jws, domain, chlng.URL, challenge{Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}
// checkDNSPropagation checks if the expected TXT record has been propagated to all authoritative nameservers.
func checkDNSPropagation(fqdn, value string) (bool, error) {
// Initial attempt to resolve at the recursive NS
r, err := dnsQuery(fqdn, dns.TypeTXT, RecursiveNameservers, true)
if err != nil {
return false, err
}
if r.Rcode == dns.RcodeSuccess {
// If we see a CNAME here then use the alias
for _, rr := range r.Answer {
if cn, ok := rr.(*dns.CNAME); ok {
if cn.Hdr.Name == fqdn {
fqdn = cn.Target
break
}
}
}
}
authoritativeNss, err := lookupNameservers(fqdn)
if err != nil {
return false, err
}
return checkAuthoritativeNss(fqdn, value, authoritativeNss)
}
// checkAuthoritativeNss queries each of the given nameservers for the expected TXT record.
func checkAuthoritativeNss(fqdn, value string, nameservers []string) (bool, error) {
for _, ns := range nameservers {
r, err := dnsQuery(fqdn, dns.TypeTXT, []string{net.JoinHostPort(ns, "53")}, false)
if err != nil {
return false, err
}
if r.Rcode != dns.RcodeSuccess {
return false, fmt.Errorf("NS %s returned %s for %s", ns, dns.RcodeToString[r.Rcode], fqdn)
}
var found bool
for _, rr := range r.Answer {
if txt, ok := rr.(*dns.TXT); ok {
if strings.Join(txt.Txt, "") == value {
found = true
break
}
}
}
if !found {
return false, fmt.Errorf("NS %s did not return the expected TXT record", ns)
}
}
return true, nil
}
// dnsQuery will query a nameserver, iterating through the supplied servers as it retries
// The nameserver should include a port, to facilitate testing where we talk to a mock dns server.
func dnsQuery(fqdn string, rtype uint16, nameservers []string, recursive bool) (in *dns.Msg, err error) {
m := new(dns.Msg)
m.SetQuestion(fqdn, rtype)
m.SetEdns0(4096, false)
if !recursive {
m.RecursionDesired = false
}
// Will retry the request based on the number of servers (n+1)
for i := 1; i <= len(nameservers)+1; i++ {
ns := nameservers[i%len(nameservers)]
udp := &dns.Client{Net: "udp", Timeout: DNSTimeout}
in, _, err = udp.Exchange(m, ns)
if err == dns.ErrTruncated {
tcp := &dns.Client{Net: "tcp", Timeout: DNSTimeout}
// If the TCP request succeeds, the err will reset to nil
in, _, err = tcp.Exchange(m, ns)
}
if err == nil {
break
}
}
return
}
// lookupNameservers returns the authoritative nameservers for the given fqdn.
func lookupNameservers(fqdn string) ([]string, error) {
var authoritativeNss []string
zone, err := FindZoneByFqdn(fqdn, RecursiveNameservers)
if err != nil {
return nil, fmt.Errorf("Could not determine the zone: %v", err)
}
r, err := dnsQuery(zone, dns.TypeNS, RecursiveNameservers, true)
if err != nil {
return nil, err
}
for _, rr := range r.Answer {
if ns, ok := rr.(*dns.NS); ok {
authoritativeNss = append(authoritativeNss, strings.ToLower(ns.Ns))
}
}
if len(authoritativeNss) > 0 {
return authoritativeNss, nil
}
return nil, fmt.Errorf("Could not determine authoritative nameservers")
}
// FindZoneByFqdn determines the zone apex for the given fqdn by recursing up the
// domain labels until the nameserver returns a SOA record in the answer section.
func FindZoneByFqdn(fqdn string, nameservers []string) (string, error) {
// Do we have it cached?
if zone, ok := fqdnToZone[fqdn]; ok {
return zone, nil
}
labelIndexes := dns.Split(fqdn)
for _, index := range labelIndexes {
domain := fqdn[index:]
in, err := dnsQuery(domain, dns.TypeSOA, nameservers, true)
if err != nil {
return "", err
}
// Any response code other than NOERROR and NXDOMAIN is treated as error
if in.Rcode != dns.RcodeNameError && in.Rcode != dns.RcodeSuccess {
return "", fmt.Errorf("Unexpected response code '%s' for %s",
dns.RcodeToString[in.Rcode], domain)
}
// Check if we got a SOA RR in the answer section
if in.Rcode == dns.RcodeSuccess {
// CNAME records cannot/should not exist at the root of a zone.
// So we skip a domain when a CNAME is found.
if dnsMsgContainsCNAME(in) {
continue
}
for _, ans := range in.Answer {
if soa, ok := ans.(*dns.SOA); ok {
zone := soa.Hdr.Name
fqdnToZone[fqdn] = zone
return zone, nil
}
}
}
}
return "", fmt.Errorf("Could not find the start of authority")
}
// dnsMsgContainsCNAME checks for a CNAME answer in msg
func dnsMsgContainsCNAME(msg *dns.Msg) bool {
for _, ans := range msg.Answer {
if _, ok := ans.(*dns.CNAME); ok {
return true
}
}
return false
}
// ClearFqdnCache clears the cache of fqdn to zone mappings. Primarily used in testing.
func ClearFqdnCache() {
fqdnToZone = map[string]string{}
}
// ToFqdn converts the name into a fqdn appending a trailing dot.
func ToFqdn(name string) string {
n := len(name)
if n == 0 || name[n-1] == '.' {
return name
}
return name + "."
}
// UnFqdn converts the fqdn into a name removing the trailing dot.
func UnFqdn(name string) string {
n := len(name)
if n != 0 && name[n-1] == '.' {
return name[:n-1]
}
return name
}

53
acmev2/dns_challenge_manual.go
View file

@ -1,53 +0,0 @@
package acme
import (
"bufio"
"fmt"
"os"
)
const (
dnsTemplate = "%s %d IN TXT \"%s\""
)
// DNSProviderManual is an implementation of the ChallengeProvider interface
type DNSProviderManual struct{}
// NewDNSProviderManual returns a DNSProviderManual instance.
func NewDNSProviderManual() (*DNSProviderManual, error) {
return &DNSProviderManual{}, nil
}
// Present prints instructions for manually creating the TXT record
func (*DNSProviderManual) Present(domain, token, keyAuth string) error {
fqdn, value, ttl := DNS01Record(domain, keyAuth)
dnsRecord := fmt.Sprintf(dnsTemplate, fqdn, ttl, value)
authZone, err := FindZoneByFqdn(fqdn, RecursiveNameservers)
if err != nil {
return err
}
logf("[INFO] acme: Please create the following TXT record in your %s zone:", authZone)
logf("[INFO] acme: %s", dnsRecord)
logf("[INFO] acme: Press 'Enter' when you are done")
reader := bufio.NewReader(os.Stdin)
_, _ = reader.ReadString('\n')
return nil
}
// CleanUp prints instructions for manually removing the TXT record
func (*DNSProviderManual) CleanUp(domain, token, keyAuth string) error {
fqdn, _, ttl := DNS01Record(domain, keyAuth)
dnsRecord := fmt.Sprintf(dnsTemplate, fqdn, ttl, "...")
authZone, err := FindZoneByFqdn(fqdn, RecursiveNameservers)
if err != nil {
return err
}
logf("[INFO] acme: You can now remove this TXT record from your %s zone:", authZone)
logf("[INFO] acme: %s", dnsRecord)
return nil
}

200
acmev2/dns_challenge_test.go
View file

@ -1,200 +0,0 @@
package acme
import (
"bufio"
"crypto/rand"
"crypto/rsa"
"net/http"
"net/http/httptest"
"os"
"reflect"
"sort"
"strings"
"testing"
"time"
)
var lookupNameserversTestsOK = []struct {
fqdn string
nss []string
}{
{"books.google.com.ng.",
[]string{"ns1.google.com.", "ns2.google.com.", "ns3.google.com.", "ns4.google.com."},
},
{"www.google.com.",
[]string{"ns1.google.com.", "ns2.google.com.", "ns3.google.com.", "ns4.google.com."},
},
{"physics.georgetown.edu.",
[]string{"ns1.georgetown.edu.", "ns2.georgetown.edu.", "ns3.georgetown.edu."},
},
}
var lookupNameserversTestsErr = []struct {
fqdn string
error string
}{
// invalid tld
{"_null.n0n0.",
"Could not determine the zone",
},
}
var findZoneByFqdnTests = []struct {
fqdn string
zone string
}{
{"mail.google.com.", "google.com."}, // domain is a CNAME
{"foo.google.com.", "google.com."}, // domain is a non-existent subdomain
{"example.com.ac.", "ac."}, // domain is a eTLD
{"cross-zone-example.assets.sh.", "assets.sh."}, // domain is a cross-zone CNAME
}
var checkAuthoritativeNssTests = []struct {
fqdn, value string
ns []string
ok bool
}{
// TXT RR w/ expected value
{"8.8.8.8.asn.routeviews.org.", "151698.8.8.024", []string{"asnums.routeviews.org."},
true,
},
// No TXT RR
{"ns1.google.com.", "", []string{"ns2.google.com."},
false,
},
}
var checkAuthoritativeNssTestsErr = []struct {
fqdn, value string
ns []string
error string
}{
// TXT RR /w unexpected value
{"8.8.8.8.asn.routeviews.org.", "fe01=", []string{"asnums.routeviews.org."},
"did not return the expected TXT record",
},
// No TXT RR
{"ns1.google.com.", "fe01=", []string{"ns2.google.com."},
"did not return the expected TXT record",
},
}
var checkResolvConfServersTests = []struct {
fixture string
expected []string
defaults []string
}{
{"testdata/resolv.conf.1", []string{"10.200.3.249:53", "10.200.3.250:5353", "[2001:4860:4860::8844]:53", "[10.0.0.1]:5353"}, []string{"127.0.0.1:53"}},
{"testdata/resolv.conf.nonexistant", []string{"127.0.0.1:53"}, []string{"127.0.0.1:53"}},
}
func TestDNSValidServerResponse(t *testing.T) {
PreCheckDNS = func(fqdn, value string) (bool, error) {
return true, nil
}
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"dns01\",\"status\":\"valid\",\"uri\":\"http://some.url\",\"token\":\"http8\"}"))
}))
manualProvider, _ := NewDNSProviderManual()
jws := &jws{privKey: privKey, getNonceURL: ts.URL}
solver := &dnsChallenge{jws: jws, validate: validate, provider: manualProvider}
clientChallenge := challenge{Type: "dns01", Status: "pending", URL: ts.URL, Token: "http8"}
go func() {
time.Sleep(time.Second * 2)
f := bufio.NewWriter(os.Stdout)
defer f.Flush()
f.WriteString("\n")
}()
if err := solver.Solve(clientChallenge, "example.com"); err != nil {
t.Errorf("VALID: Expected Solve to return no error but the error was -> %v", err)
}
}
func TestPreCheckDNS(t *testing.T) {
ok, err := PreCheckDNS("acme-staging.api.letsencrypt.org", "fe01=")
if err != nil || !ok {
t.Errorf("preCheckDNS failed for acme-staging.api.letsencrypt.org")
}
}
func TestLookupNameserversOK(t *testing.T) {
for _, tt := range lookupNameserversTestsOK {
nss, err := lookupNameservers(tt.fqdn)
if err != nil {
t.Fatalf("#%s: got %q; want nil", tt.fqdn, err)
}
sort.Strings(nss)
sort.Strings(tt.nss)
if !reflect.DeepEqual(nss, tt.nss) {
t.Errorf("#%s: got %v; want %v", tt.fqdn, nss, tt.nss)
}
}
}
func TestLookupNameserversErr(t *testing.T) {
for _, tt := range lookupNameserversTestsErr {
_, err := lookupNameservers(tt.fqdn)
if err == nil {
t.Fatalf("#%s: expected %q (error); got <nil>", tt.fqdn, tt.error)
}
if !strings.Contains(err.Error(), tt.error) {
t.Errorf("#%s: expected %q (error); got %q", tt.fqdn, tt.error, err)
continue
}
}
}
func TestFindZoneByFqdn(t *testing.T) {
for _, tt := range findZoneByFqdnTests {
res, err := FindZoneByFqdn(tt.fqdn, RecursiveNameservers)
if err != nil {
t.Errorf("FindZoneByFqdn failed for %s: %v", tt.fqdn, err)
}
if res != tt.zone {
t.Errorf("%s: got %s; want %s", tt.fqdn, res, tt.zone)
}
}
}
func TestCheckAuthoritativeNss(t *testing.T) {
for _, tt := range checkAuthoritativeNssTests {
ok, _ := checkAuthoritativeNss(tt.fqdn, tt.value, tt.ns)
if ok != tt.ok {
t.Errorf("%s: got %t; want %t", tt.fqdn, ok, tt.ok)
}
}
}
func TestCheckAuthoritativeNssErr(t *testing.T) {
for _, tt := range checkAuthoritativeNssTestsErr {
_, err := checkAuthoritativeNss(tt.fqdn, tt.value, tt.ns)
if err == nil {
t.Fatalf("#%s: expected %q (error); got <nil>", tt.fqdn, tt.error)
}
if !strings.Contains(err.Error(), tt.error) {
t.Errorf("#%s: expected %q (error); got %q", tt.fqdn, tt.error, err)
continue
}
}
}
func TestResolveConfServers(t *testing.T) {
for _, tt := range checkResolvConfServersTests {
result := getNameservers(tt.fixture, tt.defaults)
sort.Strings(result)
sort.Strings(tt.expected)
if !reflect.DeepEqual(result, tt.expected) {
t.Errorf("#%s: expected %q; got %q", tt.fixture, tt.expected, result)
}
}
}

91
acmev2/error.go
View file

@ -1,91 +0,0 @@
package acme
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"strings"
)
const (
tosAgreementError = "Terms of service have changed"
invalidNonceError = "urn:ietf:params:acme:error:badNonce"
)
// RemoteError is the base type for all errors specific to the ACME protocol.
type RemoteError struct {
StatusCode int `json:"status,omitempty"`
Type string `json:"type"`
Detail string `json:"detail"`
}
func (e RemoteError) Error() string {
return fmt.Sprintf("acme: Error %d - %s - %s", e.StatusCode, e.Type, e.Detail)
}
// TOSError represents the error which is returned if the user needs to
// accept the TOS.
// TODO: include the new TOS url if we can somehow obtain it.
type TOSError struct {
RemoteError
}
// NonceError represents the error which is returned if the
// nonce sent by the client was not accepted by the server.
type NonceError struct {
RemoteError
}
type domainError struct {
Domain string
Error error
}
// ObtainError is returned when there are specific errors available
// per domain. For example in ObtainCertificate
type ObtainError map[string]error
func (e ObtainError) Error() string {
buffer := bytes.NewBufferString("acme: Error -> One or more domains had a problem:\n")
for dom, err := range e {
buffer.WriteString(fmt.Sprintf("[%s] %s\n", dom, err))
}
return buffer.String()
}
func handleHTTPError(resp *http.Response) error {
var errorDetail RemoteError
contentType := resp.Header.Get("Content-Type")
if contentType == "application/json" || strings.HasPrefix(contentType, "application/problem+json") {
err := json.NewDecoder(resp.Body).Decode(&errorDetail)
if err != nil {
return err
}
} else {
detailBytes, err := ioutil.ReadAll(limitReader(resp.Body, maxBodySize))
if err != nil {
return err
}
errorDetail.Detail = string(detailBytes)
}
errorDetail.StatusCode = resp.StatusCode
// Check for errors we handle specifically
if errorDetail.StatusCode == http.StatusForbidden && errorDetail.Detail == tosAgreementError {
return TOSError{errorDetail}
}
if errorDetail.StatusCode == http.StatusBadRequest && errorDetail.Type == invalidNonceError {
return NonceError{errorDetail}
}
return errorDetail
}
func handleChallengeError(chlng challenge) error {
return chlng.Error
}

160
acmev2/http.go
View file

@ -1,160 +0,0 @@
package acme
import (
"encoding/json"
"errors"
"fmt"
"io"
"net"
"net/http"
"runtime"
"strings"
"time"
)
// UserAgent (if non-empty) will be tacked onto the User-Agent string in requests.
var UserAgent string
// HTTPClient is an HTTP client with a reasonable timeout value.
var HTTPClient = http.Client{
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}).Dial,
TLSHandshakeTimeout: 15 * time.Second,
ResponseHeaderTimeout: 15 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
},
}
const (
// defaultGoUserAgent is the Go HTTP package user agent string. Too
// bad it isn't exported. If it changes, we should update it here, too.
defaultGoUserAgent = "Go-http-client/1.1"
// ourUserAgent is the User-Agent of this underlying library package.
ourUserAgent = "xenolf-acme"
)
// httpHead performs a HEAD request with a proper User-Agent string.
// The response body (resp.Body) is already closed when this function returns.
func httpHead(url string) (resp *http.Response, err error) {
req, err := http.NewRequest("HEAD", url, nil)
if err != nil {
return nil, fmt.Errorf("failed to head %q: %v", url, err)
}
req.Header.Set("User-Agent", userAgent())
resp, err = HTTPClient.Do(req)
if err != nil {
return resp, fmt.Errorf("failed to do head %q: %v", url, err)
}
resp.Body.Close()
return resp, err
}
// httpPost performs a POST request with a proper User-Agent string.
// Callers should close resp.Body when done reading from it.
func httpPost(url string, bodyType string, body io.Reader) (resp *http.Response, err error) {
req, err := http.NewRequest("POST", url, body)
if err != nil {
return nil, fmt.Errorf("failed to post %q: %v", url, err)
}
req.Header.Set("Content-Type", bodyType)
req.Header.Set("User-Agent", userAgent())
return HTTPClient.Do(req)
}
// httpGet performs a GET request with a proper User-Agent string.
// Callers should close resp.Body when done reading from it.
func httpGet(url string) (resp *http.Response, err error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, fmt.Errorf("failed to get %q: %v", url, err)
}
req.Header.Set("User-Agent", userAgent())
return HTTPClient.Do(req)
}
// getJSON performs an HTTP GET request and parses the response body
// as JSON, into the provided respBody object.
func getJSON(uri string, respBody interface{}) (http.Header, error) {
resp, err := httpGet(uri)
if err != nil {
return nil, fmt.Errorf("failed to get json %q: %v", uri, err)
}
defer resp.Body.Close()
if resp.StatusCode >= http.StatusBadRequest {
return resp.Header, handleHTTPError(resp)
}
return resp.Header, json.NewDecoder(resp.Body).Decode(respBody)
}
// postJSON performs an HTTP POST request and parses the response body
// as JSON, into the provided respBody object.
func postJSON(j *jws, uri string, reqBody, respBody interface{}) (http.Header, error) {
jsonBytes, err := json.Marshal(reqBody)
if err != nil {
return nil, errors.New("Failed to marshal network message")
}
resp, err := j.post(uri, jsonBytes)
if err != nil {
return nil, fmt.Errorf("Failed to post JWS message. -> %v", err)
}
defer resp.Body.Close()
if resp.StatusCode >= http.StatusBadRequest {
err := handleHTTPError(resp)
switch err.(type) {
case NonceError:
// Retry once if the nonce was invalidated
retryResp, err := j.post(uri, jsonBytes)
if err != nil {
return nil, fmt.Errorf("Failed to post JWS message. -> %v", err)
}
defer retryResp.Body.Close()
if retryResp.StatusCode >= http.StatusBadRequest {
return retryResp.Header, handleHTTPError(retryResp)
}
if respBody == nil {
return retryResp.Header, nil
}
return retryResp.Header, json.NewDecoder(retryResp.Body).Decode(respBody)
default:
return resp.Header, err
}
}
if respBody == nil {
return resp.Header, nil
}
return resp.Header, json.NewDecoder(resp.Body).Decode(respBody)
}
// userAgent builds and returns the User-Agent string to use in requests.
func userAgent() string {
ua := fmt.Sprintf("%s (%s; %s) %s %s", defaultGoUserAgent, runtime.GOOS, runtime.GOARCH, ourUserAgent, UserAgent)
return strings.TrimSpace(ua)
}

41
acmev2/http_challenge.go
View file

@ -1,41 +0,0 @@
package acme
import (
"fmt"
"log"
)
type httpChallenge struct {
jws *jws
validate validateFunc
provider ChallengeProvider
}
// HTTP01ChallengePath returns the URL path for the `http-01` challenge
func HTTP01ChallengePath(token string) string {
return "/.well-known/acme-challenge/" + token
}
func (s *httpChallenge) Solve(chlng challenge, domain string) error {
logf("[INFO][%s] acme: Trying to solve HTTP-01", domain)
// Generate the Key Authorization for the challenge
keyAuth, err := getKeyAuthorization(chlng.Token, s.jws.privKey)
if err != nil {
return err
}
err = s.provider.Present(domain, chlng.Token, keyAuth)
if err != nil {
return fmt.Errorf("[%s] error presenting token: %v", domain, err)
}
defer func() {
err := s.provider.CleanUp(domain, chlng.Token, keyAuth)
if err != nil {
log.Printf("[%s] error cleaning up: %v", domain, err)
}
}()
return s.validate(s.jws, domain, chlng.URL, challenge{Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}

79
acmev2/http_challenge_server.go
View file

@ -1,79 +0,0 @@
package acme
import (
"fmt"
"net"
"net/http"
"strings"
)
// HTTPProviderServer implements ChallengeProvider for `http-01` challenge
// It may be instantiated without using the NewHTTPProviderServer function if
// you want only to use the default values.
type HTTPProviderServer struct {
iface string
port string
done chan bool
listener net.Listener
}
// NewHTTPProviderServer creates a new HTTPProviderServer on the selected interface and port.
// Setting iface and / or port to an empty string will make the server fall back to
// the "any" interface and port 80 respectively.
func NewHTTPProviderServer(iface, port string) *HTTPProviderServer {
return &HTTPProviderServer{iface: iface, port: port}
}
// Present starts a web server and makes the token available at `HTTP01ChallengePath(token)` for web requests.
func (s *HTTPProviderServer) Present(domain, token, keyAuth string) error {
if s.port == "" {
s.port = "80"
}
var err error
s.listener, err = net.Listen("tcp", net.JoinHostPort(s.iface, s.port))
if err != nil {
return fmt.Errorf("Could not start HTTP server for challenge -> %v", err)
}
s.done = make(chan bool)
go s.serve(domain, token, keyAuth)
return nil
}
// CleanUp closes the HTTP server and removes the token from `HTTP01ChallengePath(token)`
func (s *HTTPProviderServer) CleanUp(domain, token, keyAuth string) error {
if s.listener == nil {
return nil
}
s.listener.Close()
<-s.done
return nil
}
func (s *HTTPProviderServer) serve(domain, token, keyAuth string) {
path := HTTP01ChallengePath(token)
// The handler validates the HOST header and request type.
// For validation it then writes the token the server returned with the challenge
mux := http.NewServeMux()
mux.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
if strings.HasPrefix(r.Host, domain) && r.Method == "GET" {
w.Header().Add("Content-Type", "text/plain")
w.Write([]byte(keyAuth))
logf("[INFO][%s] Served key authentication", domain)
} else {
logf("[WARN] Received request for domain %s with method %s but the domain did not match any challenge. Please ensure your are passing the HOST header properly.", r.Host, r.Method)
w.Write([]byte("TEST"))
}
})
httpServer := &http.Server{
Handler: mux,
}
// Once httpServer is shut down we don't want any lingering
// connections, so disable KeepAlives.
httpServer.SetKeepAlivesEnabled(false)
httpServer.Serve(s.listener)
s.done <- true
}

57
acmev2/http_challenge_test.go
View file

@ -1,57 +0,0 @@
package acme
import (
"crypto/rand"
"crypto/rsa"
"io/ioutil"
"strings"
"testing"
)
func TestHTTPChallenge(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 512)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: string(HTTP01), Token: "http1"}
mockValidate := func(_ *jws, _, _ string, chlng challenge) error {
uri := "http://localhost:23457/.well-known/acme-challenge/" + chlng.Token
resp, err := httpGet(uri)
if err != nil {
return err
}
defer resp.Body.Close()
if want := "text/plain"; resp.Header.Get("Content-Type") != want {
t.Errorf("Get(%q) Content-Type: got %q, want %q", uri, resp.Header.Get("Content-Type"), want)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
bodyStr := string(body)
if bodyStr != chlng.KeyAuthorization {
t.Errorf("Get(%q) Body: got %q, want %q", uri, bodyStr, chlng.KeyAuthorization)
}
return nil
}
solver := &httpChallenge{jws: j, validate: mockValidate, provider: &HTTPProviderServer{port: "23457"}}
if err := solver.Solve(clientChallenge, "localhost:23457"); err != nil {
t.Errorf("Solve error: got %v, want nil", err)
}
}
func TestHTTPChallengeInvalidPort(t *testing.T) {
privKey, _ := rsa.GenerateKey(rand.Reader, 128)
j := &jws{privKey: privKey}
clientChallenge := challenge{Type: string(HTTP01), Token: "http2"}
solver := &httpChallenge{jws: j, validate: stubValidate, provider: &HTTPProviderServer{port: "123456"}}
if err := solver.Solve(clientChallenge, "localhost:123456"); err == nil {
t.Errorf("Solve error: got %v, want error", err)
} else if want, want18 := "invalid port 123456", "123456: invalid port"; !strings.HasSuffix(err.Error(), want) && !strings.HasSuffix(err.Error(), want18) {
t.Errorf("Solve error: got %q, want suffix %q", err.Error(), want)
}
}

100
acmev2/http_test.go
View file

@ -1,100 +0,0 @@
package acme
import (
"net/http"
"net/http/httptest"
"strings"
"testing"
)
func TestHTTPHeadUserAgent(t *testing.T) {
var ua, method string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ua = r.Header.Get("User-Agent")
method = r.Method
}))
defer ts.Close()
_, err := httpHead(ts.URL)
if err != nil {
t.Fatal(err)
}
if method != "HEAD" {
t.Errorf("Expected method to be HEAD, got %s", method)
}
if !strings.Contains(ua, ourUserAgent) {
t.Errorf("Expected User-Agent to contain '%s', got: '%s'", ourUserAgent, ua)
}
}
func TestHTTPGetUserAgent(t *testing.T) {
var ua, method string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ua = r.Header.Get("User-Agent")
method = r.Method
}))
defer ts.Close()
res, err := httpGet(ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
if method != "GET" {
t.Errorf("Expected method to be GET, got %s", method)
}
if !strings.Contains(ua, ourUserAgent) {
t.Errorf("Expected User-Agent to contain '%s', got: '%s'", ourUserAgent, ua)
}
}
func TestHTTPPostUserAgent(t *testing.T) {
var ua, method string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ua = r.Header.Get("User-Agent")
method = r.Method
}))
defer ts.Close()
res, err := httpPost(ts.URL, "text/plain", strings.NewReader("falalalala"))
if err != nil {
t.Fatal(err)
}
res.Body.Close()
if method != "POST" {
t.Errorf("Expected method to be POST, got %s", method)
}
if !strings.Contains(ua, ourUserAgent) {
t.Errorf("Expected User-Agent to contain '%s', got: '%s'", ourUserAgent, ua)
}
}
func TestUserAgent(t *testing.T) {
ua := userAgent()
if !strings.Contains(ua, defaultGoUserAgent) {
t.Errorf("Expected UA to contain %s, got '%s'", defaultGoUserAgent, ua)
}
if !strings.Contains(ua, ourUserAgent) {
t.Errorf("Expected UA to contain %s, got '%s'", ourUserAgent, ua)
}
if strings.HasSuffix(ua, " ") {
t.Errorf("UA should not have trailing spaces; got '%s'", ua)
}
// customize the UA by appending a value
UserAgent = "MyApp/1.2.3"
ua = userAgent()
if !strings.Contains(ua, defaultGoUserAgent) {
t.Errorf("Expected UA to contain %s, got '%s'", defaultGoUserAgent, ua)
}
if !strings.Contains(ua, ourUserAgent) {
t.Errorf("Expected UA to contain %s, got '%s'", ourUserAgent, ua)
}
if !strings.Contains(ua, UserAgent) {
t.Errorf("Expected custom UA to contain %s, got '%s'", UserAgent, ua)
}
}

167
acmev2/jws.go
View file

@ -1,167 +0,0 @@
package acme
import (
"bytes"
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rsa"
"fmt"
"net/http"
"sync"
"gopkg.in/square/go-jose.v2"
)
type jws struct {
getNonceURL string
privKey crypto.PrivateKey
kid string
nonces nonceManager
}
// Posts a JWS signed message to the specified URL.
// It does NOT close the response body, so the caller must
// do that if no error was returned.
func (j *jws) post(url string, content []byte) (*http.Response, error) {
signedContent, err := j.signContent(url, content)
if err != nil {
return nil, fmt.Errorf("Failed to sign content -> %s", err.Error())
}
data := bytes.NewBuffer([]byte(signedContent.FullSerialize()))
resp, err := httpPost(url, "application/jose+json", data)
if err != nil {
return nil, fmt.Errorf("Failed to HTTP POST to %s -> %s", url, err.Error())
}
nonce, nonceErr := getNonceFromResponse(resp)
if nonceErr == nil {
j.nonces.Push(nonce)
}
return resp, nil
}
func (j *jws) signContent(url string, content []byte) (*jose.JSONWebSignature, error) {
var alg jose.SignatureAlgorithm
switch k := j.privKey.(type) {
case *rsa.PrivateKey:
alg = jose.RS256
case *ecdsa.PrivateKey:
if k.Curve == elliptic.P256() {
alg = jose.ES256
} else if k.Curve == elliptic.P384() {
alg = jose.ES384
}
}
jsonKey := jose.JSONWebKey{
Key: j.privKey,
KeyID: j.kid,
}
signKey := jose.SigningKey{
Algorithm: alg,
Key: jsonKey,
}
options := jose.SignerOptions{
NonceSource: j,
ExtraHeaders: make(map[jose.HeaderKey]interface{}),
}
options.ExtraHeaders["url"] = url
if j.kid == "" {
options.EmbedJWK = true
}
signer, err := jose.NewSigner(signKey, &options)
if err != nil {
return nil, fmt.Errorf("Failed to create jose signer -> %s", err.Error())
}
signed, err := signer.Sign(content)
if err != nil {
return nil, fmt.Errorf("Failed to sign content -> %s", err.Error())
}
return signed, nil
}
func (j *jws) signEABContent(url, kid string, hmac []byte) (*jose.JSONWebSignature, error) {
jwk := jose.JSONWebKey{Key: j.privKey}
jwkJSON, err := jwk.Public().MarshalJSON()
if err != nil {
return nil, fmt.Errorf("acme: error encoding eab jwk key: %s", err.Error())
}
signer, err := jose.NewSigner(
jose.SigningKey{Algorithm: jose.HS256, Key: hmac},
&jose.SignerOptions{
EmbedJWK: false,
ExtraHeaders: map[jose.HeaderKey]interface{}{
"kid": kid,
"url": url,
},
},
)
if err != nil {
return nil, fmt.Errorf("Failed to create External Account Binding jose signer -> %s", err.Error())
}
signed, err := signer.Sign(jwkJSON)
if err != nil {
return nil, fmt.Errorf("Failed to External Account Binding sign content -> %s", err.Error())
}
return signed, nil
}
func (j *jws) Nonce() (string, error) {
if nonce, ok := j.nonces.Pop(); ok {
return nonce, nil
}
return getNonce(j.getNonceURL)
}
type nonceManager struct {
nonces []string
sync.Mutex
}
func (n *nonceManager) Pop() (string, bool) {
n.Lock()
defer n.Unlock()
if len(n.nonces) == 0 {
return "", false
}
nonce := n.nonces[len(n.nonces)-1]
n.nonces = n.nonces[:len(n.nonces)-1]
return nonce, true
}
func (n *nonceManager) Push(nonce string) {
n.Lock()
defer n.Unlock()
n.nonces = append(n.nonces, nonce)
}
func getNonce(url string) (string, error) {
resp, err := httpHead(url)
if err != nil {
return "", fmt.Errorf("Failed to get nonce from HTTP HEAD -> %s", err.Error())
}
return getNonceFromResponse(resp)
}
func getNonceFromResponse(resp *http.Response) (string, error) {
nonce := resp.Header.Get("Replay-Nonce")
if nonce == "" {
return "", fmt.Errorf("Server did not respond with a proper nonce header")
}
return nonce, nil
}

106
acmev2/messages.go
View file

@ -1,106 +0,0 @@
package acme
import (
"time"
"encoding/json"
)
// RegistrationResource represents all important informations about a registration
// of which the client needs to keep track itself.
type RegistrationResource struct {
Body accountMessage `json:"body,omitempty"`
URI string `json:"uri,omitempty"`
}
type directory struct {
NewNonceURL string `json:"newNonce"`
NewAccountURL string `json:"newAccount"`
NewOrderURL string `json:"newOrder"`
RevokeCertURL string `json:"revokeCert"`
KeyChangeURL string `json:"keyChange"`
Meta struct {
TermsOfService string `json:"termsOfService"`
Website string `json:"website"`
CaaIdentities []string `json:"caaIdentities"`
ExternalAccountRequired bool `json:"externalAccountRequired"`
} `json:"meta"`
}
type accountMessage struct {
Status string `json:"status,omitempty"`
Contact []string `json:"contact,omitempty"`
TermsOfServiceAgreed bool `json:"termsOfServiceAgreed,omitempty"`
Orders string `json:"orders,omitempty"`
OnlyReturnExisting bool `json:"onlyReturnExisting,omitempty"`
ExternalAccountBinding json.RawMessage `json:"externalAccountBinding,omitempty"`
}
type orderResource struct {
URL string `json:"url,omitempty"`
Domains []string `json:"domains,omitempty"`
orderMessage `json:"body,omitempty"`
}
type orderMessage struct {
Status string `json:"status,omitempty"`
Expires string `json:"expires,omitempty"`
Identifiers []identifier `json:"identifiers"`
NotBefore string `json:"notBefore,omitempty"`
NotAfter string `json:"notAfter,omitempty"`
Authorizations []string `json:"authorizations,omitempty"`
Finalize string `json:"finalize,omitempty"`
Certificate string `json:"certificate,omitempty"`
}
type authorization struct {
Status string `json:"status"`
Expires time.Time `json:"expires"`
Identifier identifier `json:"identifier"`
Challenges []challenge `json:"challenges"`
}
type identifier struct {
Type string `json:"type"`
Value string `json:"value"`
}
type challenge struct {
URL string `json:"url"`
Type string `json:"type"`
Status string `json:"status"`
Token string `json:"token"`
Validated time.Time `json:"validated"`
KeyAuthorization string `json:"keyAuthorization"`
Error RemoteError `json:"error"`
}
type csrMessage struct {
Csr string `json:"csr"`
}
type emptyObjectMessage struct {
}
type revokeCertMessage struct {
Certificate string `json:"certificate"`
}
type deactivateAuthMessage struct {
Status string `jsom:"status"`
}
// CertificateResource represents a CA issued certificate.
// PrivateKey, Certificate and IssuerCertificate are all
// already PEM encoded and can be directly written to disk.
// Certificate may be a certificate bundle, depending on the
// options supplied to create it.
type CertificateResource struct {
Domain string `json:"domain"`
CertURL string `json:"certUrl"`
CertStableURL string `json:"certStableUrl"`
AccountRef string `json:"accountRef,omitempty"`
PrivateKey []byte `json:"-"`
Certificate []byte `json:"-"`
IssuerCertificate []byte `json:"-"`
CSR []byte `json:"-"`
}

1
acmev2/pop_challenge.go
View file

@ -1 +0,0 @@
package acme

28
acmev2/provider.go
View file

@ -1,28 +0,0 @@
package acme
import "time"
// ChallengeProvider enables implementing a custom challenge
// provider. Present presents the solution to a challenge available to
// be solved. CleanUp will be called by the challenge if Present ends
// in a non-error state.
type ChallengeProvider interface {
Present(domain, token, keyAuth string) error
CleanUp(domain, token, keyAuth string) error
}
// ChallengeProviderTimeout allows for implementing a
// ChallengeProvider where an unusually long timeout is required when
// waiting for an ACME challenge to be satisfied, such as when
// checking for DNS record progagation. If an implementor of a
// ChallengeProvider provides a Timeout method, then the return values
// of the Timeout method will be used when appropriate by the acme
// package. The interval value is the time between checks.
//
// The default values used for timeout and interval are 60 seconds and
// 2 seconds respectively. These are used when no Timeout method is
// defined for the ChallengeProvider.
type ChallengeProviderTimeout interface {
ChallengeProvider
Timeout() (timeout, interval time.Duration)
}

5
acmev2/testdata/resolv.conf.1 vendored
View file

@ -1,5 +0,0 @@
domain company.com
nameserver 10.200.3.249
nameserver 10.200.3.250:5353
nameserver 2001:4860:4860::8844
nameserver [10.0.0.1]:5353

29
acmev2/utils.go
View file

@ -1,29 +0,0 @@
package acme
import (
"fmt"
"time"
)
// WaitFor polls the given function 'f', once every 'interval', up to 'timeout'.
func WaitFor(timeout, interval time.Duration, f func() (bool, error)) error {
var lastErr string
timeup := time.After(timeout)
for {
select {
case <-timeup:
return fmt.Errorf("Time limit exceeded. Last error: %s", lastErr)
default:
}
stop, err := f()
if stop {
return nil
}
if err != nil {
lastErr = err.Error()
}
time.Sleep(interval)
}
}

26
acmev2/utils_test.go
View file

@ -1,26 +0,0 @@
package acme
import (
"testing"
"time"
)
func TestWaitForTimeout(t *testing.T) {
c := make(chan error)
go func() {
err := WaitFor(3*time.Second, 1*time.Second, func() (bool, error) {
return false, nil
})
c <- err
}()
timeout := time.After(4 * time.Second)
select {
case <-timeout:
t.Fatal("timeout exceeded")
case err := <-c:
if err == nil {
t.Errorf("expected timeout error; got %v", err)
}
}
}

2
cli.go
View file

@ -11,7 +11,7 @@ import (
"text/tabwriter"
"github.com/urfave/cli"
"github.com/xenolf/lego/acmev2"
"github.com/xenolf/lego/acme"
)
// Logger is used to log errors; if nil, the default log.Logger is used.

3
cli_handlers.go
View file

@ -15,7 +15,7 @@ import (
"time"
"github.com/urfave/cli"
"github.com/xenolf/lego/acmev2"
"github.com/xenolf/lego/acme"
"github.com/xenolf/lego/providers/dns"
"github.com/xenolf/lego/providers/http/memcached"
"github.com/xenolf/lego/providers/http/webroot"
@ -302,7 +302,6 @@ func run(c *cli.Context) error {
}
var cert *acme.CertificateResource
var err error
if hasDomains {
// obtain a certificate, generating a new private key

2
configuration.go
View file

@ -8,7 +8,7 @@ import (
"strings"
"github.com/urfave/cli"
"github.com/xenolf/lego/acmev2"
"github.com/xenolf/lego/acme"
)
// Configuration type from CLI and config files.

58
providers/dns/gandi/gandi_test.go
View file

@ -2,13 +2,10 @@ package gandi
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"regexp"
"strings"
"testing"
@ -92,61 +89,6 @@ func TestDNSProvider(t *testing.T) {
}
}
// TestDNSProviderLive performs a live test to obtain a certificate
// using the Let's Encrypt staging server. It runs provided that both
// the environment variables GANDI_API_KEY and GANDI_TEST_DOMAIN are
// set. Otherwise the test is skipped.
//
// To complete this test, go test must be run with the -timeout=40m
// flag, since the default timeout of 10m is insufficient.
func TestDNSProviderLive(t *testing.T) {
apiKey := os.Getenv("GANDI_API_KEY")
domain := os.Getenv("GANDI_TEST_DOMAIN")
if apiKey == "" || domain == "" {
t.Skip("skipping live test")
}
// create a user.
const rsaKeySize = 2048
privateKey, err := rsa.GenerateKey(rand.Reader, rsaKeySize)
if err != nil {
t.Fatal(err)
}
myUser := user{
Email: "test@example.com",
key: privateKey,
}
// create a client using staging server
client, err := acme.NewClient(stagingServer, &myUser, acme.RSA2048)
if err != nil {
t.Fatal(err)
}
provider, err := NewDNSProviderCredentials(apiKey)
if err != nil {
t.Fatal(err)
}
err = client.SetChallengeProvider(acme.DNS01, provider)
if err != nil {
t.Fatal(err)
}
client.ExcludeChallenges([]acme.Challenge{acme.HTTP01, acme.TLSSNI01})
// register and agree tos
reg, err := client.Register()
if err != nil {
t.Fatal(err)
}
myUser.Registration = reg
err = client.AgreeToTOS()
if err != nil {
t.Fatal(err)
}
// complete the challenge
bundle := false
_, failures := client.ObtainCertificate([]string{domain}, bundle, nil, false)
if len(failures) > 0 {
t.Fatal(failures)
}
}
// serverResponses is the XML-RPC Request->Response map used by the
// fake RPC server. It was generated by recording a real RPC session
// which resulted in the successful issue of a cert, and then

58
providers/dns/gandiv5/gandiv5_test.go
View file

@ -2,13 +2,10 @@ package gandiv5
import (
"crypto"
"crypto/rand"
"crypto/rsa"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"regexp"
"strings"
"testing"
@ -92,61 +89,6 @@ func TestDNSProvider(t *testing.T) {
}
}
// TestDNSProviderLive performs a live test to obtain a certificate
// using the Let's Encrypt staging server. It runs provided that both
// the environment variables GANDIV5_API_KEY and GANDI_TEST_DOMAIN are
// set. Otherwise the test is skipped.
//
// To complete this test, go test must be run with the -timeout=40m
// flag, since the default timeout of 10m is insufficient.
func TestDNSProviderLive(t *testing.T) {
apiKey := os.Getenv("GANDIV5_API_KEY")
domain := os.Getenv("GANDI_TEST_DOMAIN")
if apiKey == "" || domain == "" {
t.Skip("skipping live test")
}
// create a user.
const rsaKeySize = 2048
privateKey, err := rsa.GenerateKey(rand.Reader, rsaKeySize)
if err != nil {
t.Fatal(err)
}
myUser := user{
Email: "test@example.com",
key: privateKey,
}
// create a client using staging server
client, err := acme.NewClient(stagingServer, &myUser, acme.RSA2048)
if err != nil {
t.Fatal(err)
}
provider, err := NewDNSProviderCredentials(apiKey)
if err != nil {
t.Fatal(err)
}
err = client.SetChallengeProvider(acme.DNS01, provider)
if err != nil {
t.Fatal(err)
}
client.ExcludeChallenges([]acme.Challenge{acme.HTTP01, acme.TLSSNI01})
// register and agree tos
reg, err := client.Register()
if err != nil {
t.Fatal(err)
}
myUser.Registration = reg
err = client.AgreeToTOS()
if err != nil {
t.Fatal(err)
}
// complete the challenge
bundle := false
_, failures := client.ObtainCertificate([]string{domain}, bundle, nil, false)
if len(failures) > 0 {
t.Fatal(failures)
}
}
// serverResponses is the JSON Request->Response map used by the
// fake JSON server.
var serverResponses = map[string]string{