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Split off tests for validate, simplifying HTTP-01 and TLS-SNI-01 tests.

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This commit is contained in:
Tommie Gannert 2015-12-05 14:53:53 +00:00
parent bee1326835
commit 2dc2fdd1af
6 changed files with 152 additions and 317 deletions
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20
acme/client.go
View file

@ -99,8 +99,8 @@ func NewClient(caDirURL string, user User, keyBits int, optPort string) (*Client
// Add all available solvers with the right index as per ACME
// spec to this map. Otherwise they won`t be found.
solvers := make(map[string]solver)
solvers["http-01"] = &httpChallenge{jws: jws, optPort: optPort}
solvers["tls-sni-01"] = &tlsSNIChallenge{jws: jws, optPort: optPort}
solvers["http-01"] = &httpChallenge{jws: jws, validate: validate, optPort: optPort}
solvers["tls-sni-01"] = &tlsSNIChallenge{jws: jws, validate: validate, optPort: optPort}
return &Client{directory: dir, user: user, jws: jws, keyBits: keyBits, solvers: solvers}, nil
}
@ -671,6 +671,11 @@ func parseLinks(links []string) map[string]string {
return linkMap
}
var (
pollInterval = 1 * time.Second
maxPollInterval = 15 * time.Minute
)
// validate makes the ACME server start validating a
// challenge response, only returning once it is done.
func validate(j *jws, uri string, chlng challenge) error {
@ -680,8 +685,7 @@ func validate(j *jws, uri string, chlng challenge) error {
return err
}
interval := 1 * time.Second
maxInterval := 15 * time.Minute
delay := pollInterval
// After the path is sent, the ACME server will access our server.
// Repeatedly check the server for an updated status on our request.
@ -699,10 +703,10 @@ func validate(j *jws, uri string, chlng challenge) error {
}
// Poll with exponential back-off.
time.Sleep(interval)
interval *= 2
if interval > maxInterval {
interval = maxInterval
time.Sleep(delay)
delay *= 2
if delay > maxPollInterval {
delay = maxPollInterval
}
if err := getJSON(uri, &challengeResponse); err != nil {

72
acme/client_test.go
View file

@ -6,6 +6,7 @@ import (
"encoding/json"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
@ -59,6 +60,77 @@ func TestNewClient(t *testing.T) {
}
}
func TestValidate(t *testing.T) {
// Disable polling delay in validate for faster tests.
pollInterval = 0
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")
switch r.Method {
case "HEAD":
case "POST":
st := statuses[0]
statuses = statuses[1:]
writeJSONResponse(w, &challenge{Type: "http-01", Status: st, URI: "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"})
default:
http.Error(w, r.Method, http.StatusMethodNotAllowed)
}
}))
defer ts.Close()
privKey, _ := generatePrivateKey(rsakey, 512)
j := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
tsts := []struct {
name string
statuses []string
want string
}{
{"POST-unexpected", []string{"weird"}, "unexpected"},
{"POST-valid", []string{"valid"}, ""},
{"POST-invalid", []string{"invalid"}, "not validate"},
{"GET-unexpected", []string{"pending", "weird"}, "unexpected"},
{"GET-valid", []string{"pending", "valid"}, ""},
{"GET-invalid", []string{"pending", "invalid"}, "not validate"},
}
for _, tst := range tsts {
statuses = tst.statuses
if err := validate(j, 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)
}
}
}
// 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, uri string, chlng challenge) error {
return nil
}
type mockUser struct {
email string
regres *RegistrationResource

7
acme/http_challenge.go
View file

@ -8,8 +8,9 @@ import (
)
type httpChallenge struct {
jws *jws
optPort string
jws *jws
validate func(j *jws, uri string, chlng challenge) error
optPort string
}
func (s *httpChallenge) Solve(chlng challenge, domain string) error {
@ -56,5 +57,5 @@ func (s *httpChallenge) Solve(chlng challenge, domain string) error {
go http.Serve(listener, mux)
return validate(s.jws, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
return s.validate(s.jws, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}

277
acme/http_challenge_test.go
View file

@ -2,263 +2,56 @@ package acme
import (
"crypto/rsa"
"crypto/tls"
"encoding/json"
"io/ioutil"
"net/http"
"net/http/httptest"
"regexp"
"strings"
"testing"
"github.com/square/go-jose"
)
func TestHTTPNonRootBind(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 128)
jws := &jws{privKey: privKey.(*rsa.PrivateKey)}
solver := &httpChallenge{jws: jws}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: "localhost:4000", Token: "http1"}
// validate error on non-root bind to 80
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("BIND: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "Could not start HTTP server for challenge -> listen tcp :80: bind: permission denied"
if err.Error() != expectedError {
t.Errorf("Expected error \"%s\" but instead got \"%s\"", expectedError, err.Error())
}
}
}
func TestHTTPShortRSA(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 128)
jws := &jws{privKey: privKey.(*rsa.PrivateKey), nonces: []string{"test1", "test2"}}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: "http://localhost:4000", Token: "http2"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "Failed to post JWS message. -> crypto/rsa: message too long for RSA public key size"
if err.Error() != expectedError {
t.Errorf("Expected error %s but instead got %s", expectedError, err.Error())
}
}
}
func TestHTTPConnectionRefusal(t *testing.T) {
func TestHTTPChallenge(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
jws := &jws{privKey: privKey.(*rsa.PrivateKey), nonces: []string{"test1", "test2"}}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: "http://localhost:4000", Token: "http3"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
} else {
reg := "/Failed to post JWS message\\. -> Post http:\\/\\/localhost:4000: dial tcp 127\\.0\\.0\\.1:4000: (getsockopt: )?connection refused/g"
test2 := "Failed to post JWS message. -> Post http://localhost:4000: dial tcp 127.0.0.1:4000: connection refused"
r, _ := regexp.Compile(reg)
if r.MatchString(err.Error()) && r.MatchString(test2) {
t.Errorf("Expected \"%s\" to match %s", err.Error(), reg)
}
}
}
func TestHTTPUnexpectedServerState(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"http01\",\"status\":\"what\",\"uri\":\"http://some.url\",\"token\":\"http4\"}"))
}))
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http4"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "The server returned an unexpected state."
if err.Error() != expectedError {
t.Errorf("Expected error %s but instead got %s", expectedError, err.Error())
}
}
}
func TestHTTPChallengeServerUnexpectedDomain(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
jws := &jws{privKey: privKey.(*rsa.PrivateKey)}
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.Method == "POST" {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
req, _ := client.Get("https://localhost:23456/.well-known/acme-challenge/" + "htto5")
reqBytes, _ := ioutil.ReadAll(req.Body)
if string(reqBytes) != "TEST" {
t.Error("Expected http01 server to return string TEST on unexpected domain.")
}
}
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"http01\",\"status\":\"invalid\",\"uri\":\"http://some.url\",\"token\":\"http5\"}"))
}))
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http5"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
}
}
func TestHTTPServerError(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.Method == "HEAD" {
w.Header().Add("Replay-Nonce", "12345")
} else {
w.WriteHeader(http.StatusInternalServerError)
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"urn:acme:error:unauthorized\",\"detail\":\"Error creating new authz :: Syntax error\"}"))
}
}))
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http6"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "acme: Error 500 - urn:acme:error:unauthorized - Error creating new authz :: Syntax error"
if err.Error() != expectedError {
t.Errorf("Expected error |%s| but instead got |%s|", expectedError, err.Error())
}
}
}
func TestHTTPInvalidServerState(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"http01\",\"status\":\"invalid\",\"uri\":\"http://some.url\",\"token\":\"http7\"}"))
}))
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http7"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("UNEXPECTED: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "The server could not validate our request."
if err.Error() != expectedError {
t.Errorf("Expected error |%s| but instead got |%s|", expectedError, err.Error())
}
}
}
func TestHTTPValidServerResponse(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Replay-Nonce", "12345")
w.Write([]byte("{\"type\":\"http01\",\"status\":\"valid\",\"uri\":\"http://some.url\",\"token\":\"http8\"}"))
}))
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &httpChallenge{jws: jws, optPort: "23456"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http8"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err != nil {
t.Errorf("VALID: Expected Solve to return no error but the error was -> %v", err)
}
}
func TestHTTPValidFull(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
ts := httptest.NewServer(nil)
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &httpChallenge{jws: jws, optPort: "23457"}
clientChallenge := challenge{Type: "http01", Status: "pending", URI: ts.URL, Token: "http9"}
// Validate server on port 23456 which responds appropriately
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var request challenge
w.Header().Add("Replay-Nonce", "12345")
if r.Method == "HEAD" {
return
}
clientJws, _ := ioutil.ReadAll(r.Body)
j, err := jose.ParseSigned(string(clientJws))
j := &jws{privKey: privKey.(*rsa.PrivateKey)}
clientChallenge := challenge{Type: "http-01", Token: "http1"}
mockValidate := func(_ *jws, _ string, chlng challenge) error {
uri := "http://localhost:23457/.well-known/acme-challenge/" + chlng.Token
resp, err := http.Get(uri)
if err != nil {
t.Errorf("Client sent invalid JWS to the server.\n\t%v", err)
return
}
output, err := j.Verify(&privKey.(*rsa.PrivateKey).PublicKey)
if err != nil {
t.Errorf("Unable to verify client data -> %v", err)
}
json.Unmarshal(output, &request)
transport := &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}
client := &http.Client{Transport: transport}
reqURL := "http://localhost:23457/.well-known/acme-challenge/" + clientChallenge.Token
t.Logf("Request URL is: %s", reqURL)
req, err := http.NewRequest("GET", reqURL, nil)
if err != nil {
t.Error(err)
}
req.Host = "127.0.0.1"
resp, err := client.Do(req)
if err != nil {
t.Errorf("Expected the solver to listen on port 23457 -> %v", err)
return err
}
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
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 resp.Header.Get("Content-Type") != "text/plain" {
t.Errorf("Expected server to respond with content type text/plain.")
if bodyStr != chlng.KeyAuthorization {
t.Errorf("Get(%q) Body: got %q, want %q", uri, bodyStr, chlng.KeyAuthorization)
}
tokenRegex := regexp.MustCompile("^[\\w-]{43}$")
parts := strings.Split(bodyStr, ".")
return nil
}
solver := &httpChallenge{jws: j, validate: mockValidate, optPort: "23457"}
if len(parts) != 2 {
t.Errorf("Expected server token to be a composite of two strings, seperated by a dot")
}
if parts[0] != clientChallenge.Token {
t.Errorf("Expected the first part of the server token to be the challenge token.")
}
if !tokenRegex.MatchString(parts[1]) {
t.Errorf("Expected the second part of the server token to be a properly formatted key authorization")
}
valid := challenge{Type: "http01", Status: "valid", URI: ts.URL, Token: "1234567812"}
jsonBytes, _ := json.Marshal(&valid)
w.Write(jsonBytes)
})
if err := solver.Solve(clientChallenge, "127.0.0.1"); err != nil {
t.Errorf("VALID: Expected Solve to return no error but the error was -> %v", err)
if err := solver.Solve(clientChallenge, "localhost:23457"); err != nil {
t.Errorf("Solve error: got %v, want nil", err)
}
}
func TestHTTPChallengeInvalidPort(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 128)
j := &jws{privKey: privKey.(*rsa.PrivateKey)}
clientChallenge := challenge{Type: "http-01", Token: "http2"}
solver := &httpChallenge{jws: j, validate: stubValidate, optPort: "123456"}
if err := solver.Solve(clientChallenge, "localhost:123456"); err == nil {
t.Error("Solve error: got %v, want error", err)
} else if want := "invalid port 123456"; !strings.HasSuffix(err.Error(), want) {
t.Errorf("Solve error: got %q, want suffix %q", err.Error(), want)
}
}

7
acme/tls_sni_challenge.go
View file

@ -10,8 +10,9 @@ import (
)
type tlsSNIChallenge struct {
jws *jws
optPort string
jws *jws
validate func(j *jws, uri string, chlng challenge) error
optPort string
}
func (t *tlsSNIChallenge) Solve(chlng challenge, domain string) error {
@ -48,7 +49,7 @@ func (t *tlsSNIChallenge) Solve(chlng challenge, domain string) error {
go http.Serve(listener, nil)
return validate(t.jws, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
return t.validate(t.jws, chlng.URI, challenge{Resource: "challenge", Type: chlng.Type, Token: chlng.Token, KeyAuthorization: keyAuth})
}
func (t *tlsSNIChallenge) generateCertificate(keyAuth string) (tls.Certificate, error) {

86
acme/tls_sni_challenge_test.go
View file

@ -5,61 +5,17 @@ import (
"crypto/sha256"
"crypto/tls"
"encoding/hex"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/square/go-jose"
)
func TestTLSSNINonRootBind(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 128)
jws := &jws{privKey: privKey.(*rsa.PrivateKey)}
solver := &tlsSNIChallenge{jws: jws}
clientChallenge := challenge{Type: "tls-sni-01", Status: "pending", URI: "localhost:4000", Token: "tls1"}
// validate error on non-root bind to 443
if err := solver.Solve(clientChallenge, "127.0.0.1"); err == nil {
t.Error("BIND: Expected Solve to return an error but the error was nil.")
} else {
expectedError := "Could not start HTTPS server for challenge -> listen tcp :443: bind: permission denied"
if err.Error() != expectedError {
t.Errorf("Expected error \"%s\" but instead got \"%s\"", expectedError, err.Error())
}
}
}
func TestTLSSNI(t *testing.T) {
func TestTLSSNIChallenge(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 512)
optPort := "5001"
ts := httptest.NewServer(nil)
ts.Config.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var request challenge
w.Header().Add("Replay-Nonce", "12345")
if r.Method == "HEAD" {
return
}
clientJws, _ := ioutil.ReadAll(r.Body)
j, err := jose.ParseSigned(string(clientJws))
if err != nil {
t.Errorf("Client sent invalid JWS to the server.\n\t%v", err)
return
}
output, err := j.Verify(&privKey.(*rsa.PrivateKey).PublicKey)
if err != nil {
t.Errorf("Unable to verify client data -> %v", err)
}
json.Unmarshal(output, &request)
conn, err := tls.Dial("tcp", "localhost:"+optPort, &tls.Config{
j := &jws{privKey: privKey.(*rsa.PrivateKey)}
clientChallenge := challenge{Type: "tls-sni-01", Token: "tlssni1"}
mockValidate := func(_ *jws, _ string, chlng challenge) error {
conn, err := tls.Dial("tcp", "localhost:23457", &tls.Config{
InsecureSkipVerify: true,
})
if err != nil {
@ -77,7 +33,7 @@ func TestTLSSNI(t *testing.T) {
t.Errorf("Expected the challenge certificate to have exactly one DNSNames entry but had %d", count)
}
zBytes := sha256.Sum256([]byte(request.KeyAuthorization))
zBytes := sha256.Sum256([]byte(chlng.KeyAuthorization))
z := hex.EncodeToString(zBytes[:sha256.Size])
domain := fmt.Sprintf("%s.%s.acme.invalid", z[:32], z[32:])
@ -85,16 +41,24 @@ func TestTLSSNI(t *testing.T) {
t.Errorf("Expected the challenge certificate DNSName to match %s but was %s", domain, remoteCert.DNSNames[0])
}
valid := challenge{Type: "tls-sni-01", Status: "valid", URI: ts.URL, Token: "tls1"}
jsonBytes, _ := json.Marshal(&valid)
w.Write(jsonBytes)
})
return nil
}
solver := &tlsSNIChallenge{jws: j, validate: mockValidate, optPort: "23457"}
jws := &jws{privKey: privKey.(*rsa.PrivateKey), directoryURL: ts.URL}
solver := &tlsSNIChallenge{jws: jws, optPort: optPort}
clientChallenge := challenge{Type: "tls-sni-01", Status: "pending", URI: ts.URL, Token: "tls1"}
if err := solver.Solve(clientChallenge, "127.0.0.1"); err != nil {
t.Error("UNEXPECTED: Expected Solve to return no error but the error was %s.", err.Error())
if err := solver.Solve(clientChallenge, "localhost:23457"); err != nil {
t.Errorf("Solve error: got %v, want nil", err)
}
}
func TestTLSSNIChallengeInvalidPort(t *testing.T) {
privKey, _ := generatePrivateKey(rsakey, 128)
j := &jws{privKey: privKey.(*rsa.PrivateKey)}
clientChallenge := challenge{Type: "tls-sni-01", Token: "tlssni2"}
solver := &tlsSNIChallenge{jws: j, validate: stubValidate, optPort: "123456"}
if err := solver.Solve(clientChallenge, "localhost:123456"); err == nil {
t.Error("Solve error: got %v, want error", err)
} else if want := "invalid port 123456"; !strings.HasSuffix(err.Error(), want) {
t.Errorf("Solve error: got %q, want suffix %q", err.Error(), want)
}
}