certificates/ca/ca_test.go

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package ca
import (
"bytes"
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"crypto"
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"crypto/rand"
"crypto/sha1"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
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"encoding/asn1"
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"encoding/json"
"encoding/pem"
"fmt"
"net/http"
"net/http/httptest"
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"os"
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"strings"
"testing"
"time"
"github.com/pkg/errors"
"github.com/smallstep/assert"
"github.com/smallstep/certificates/api"
"github.com/smallstep/certificates/authority"
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"github.com/smallstep/certificates/authority/provisioner"
"github.com/smallstep/certificates/errs"
"go.step.sm/crypto/jose"
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"go.step.sm/crypto/keyutil"
"go.step.sm/crypto/pemutil"
"go.step.sm/crypto/randutil"
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"go.step.sm/crypto/x509util"
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)
type ClosingBuffer struct {
*bytes.Buffer
}
func (cb *ClosingBuffer) Close() error {
return nil
}
func getCSR(priv interface{}) (*x509.CertificateRequest, error) {
_csr := &x509.CertificateRequest{
Subject: pkix.Name{CommonName: "test.smallstep.com"},
DNSNames: []string{"test.smallstep.com"},
}
csrBytes, err := x509.CreateCertificateRequest(rand.Reader, _csr, priv)
if err != nil {
return nil, err
}
return x509.ParseCertificateRequest(csrBytes)
}
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func generateSubjectKeyID(pub crypto.PublicKey) ([]byte, error) {
b, err := x509.MarshalPKIXPublicKey(pub)
if err != nil {
return nil, errors.Wrap(err, "error marshaling public key")
}
info := struct {
Algorithm pkix.AlgorithmIdentifier
SubjectPublicKey asn1.BitString
}{}
if _, err = asn1.Unmarshal(b, &info); err != nil {
return nil, errors.Wrap(err, "error unmarshaling public key")
}
hash := sha1.Sum(info.SubjectPublicKey.Bytes)
return hash[:], nil
}
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func TestMain(m *testing.M) {
DisableIdentity = true
os.Exit(m.Run())
}
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func TestCASign(t *testing.T) {
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pub, priv, err := keyutil.GenerateDefaultKeyPair()
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assert.FatalError(t, err)
asn1dn := &authority.ASN1DN{
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Country: "Tazmania",
Organization: "Acme Co",
Locality: "Landscapes",
Province: "Sudden Cliffs",
StreetAddress: "TNT",
CommonName: "test.smallstep.com",
}
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
config.AuthorityConfig.Template = asn1dn
ca, err := New(config)
assert.FatalError(t, err)
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intermediateCert, err := pemutil.ReadCertificate("testdata/secrets/intermediate_ca.crt")
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assert.FatalError(t, err)
clijwk, err := jose.ReadKey("testdata/secrets/step_cli_key_priv.jwk", jose.WithPassword([]byte("pass")))
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assert.FatalError(t, err)
sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.ES256, Key: clijwk.Key},
(&jose.SignerOptions{}).WithType("JWT").WithHeader("kid", clijwk.KeyID))
assert.FatalError(t, err)
validAud := []string{"https://127.0.0.1:0/sign"}
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now := time.Now().UTC()
leafExpiry := now.Add(time.Minute * 5)
type signTest struct {
ca *CA
body string
status int
errMsg string
}
tests := map[string]func(t *testing.T) *signTest{
"fail invalid-json-body": func(t *testing.T) *signTest {
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return &signTest{
ca: ca,
body: "invalid json",
status: http.StatusBadRequest,
errMsg: errs.BadRequestPrefix,
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}
},
"fail invalid-csr-sig": func(t *testing.T) *signTest {
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der := []byte(`-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----`)
block, _ := pem.Decode(der)
assert.NotNil(t, block)
csr, err := x509.ParseCertificateRequest(block.Bytes)
assert.FatalError(t, err)
body, err := json.Marshal(&api.SignRequest{
CsrPEM: api.CertificateRequest{CertificateRequest: csr},
OTT: "foo",
})
assert.FatalError(t, err)
return &signTest{
ca: ca,
body: string(body),
status: http.StatusBadRequest,
errMsg: errs.BadRequestPrefix,
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}
},
"fail unauthorized-ott": func(t *testing.T) *signTest {
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csr, err := getCSR(priv)
assert.FatalError(t, err)
body, err := json.Marshal(&api.SignRequest{
CsrPEM: api.CertificateRequest{CertificateRequest: csr},
OTT: "foo",
})
assert.FatalError(t, err)
return &signTest{
ca: ca,
body: string(body),
status: http.StatusUnauthorized,
errMsg: errs.UnauthorizedDefaultMsg,
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}
},
"fail commonname-claim": func(t *testing.T) *signTest {
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jti, err := randutil.ASCII(32)
assert.FatalError(t, err)
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cl := struct {
jose.Claims
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SANS []string `json:"sans"`
}{
Claims: jose.Claims{
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Subject: "invalid",
Issuer: "step-cli",
NotBefore: jose.NewNumericDate(now),
Expiry: jose.NewNumericDate(now.Add(time.Minute)),
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Audience: validAud,
ID: jti,
},
SANS: []string{"invalid"},
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}
raw, err := jose.Signed(sig).Claims(cl).CompactSerialize()
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assert.FatalError(t, err)
csr, err := getCSR(priv)
assert.FatalError(t, err)
body, err := json.Marshal(&api.SignRequest{
CsrPEM: api.CertificateRequest{CertificateRequest: csr},
OTT: raw,
})
assert.FatalError(t, err)
return &signTest{
ca: ca,
body: string(body),
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status: http.StatusForbidden,
errMsg: errs.ForbiddenPrefix,
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}
},
"ok": func(t *testing.T) *signTest {
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jti, err := randutil.ASCII(32)
assert.FatalError(t, err)
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cl := struct {
jose.Claims
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SANS []string `json:"sans"`
}{
Claims: jose.Claims{
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Subject: "test.smallstep.com",
Issuer: "step-cli",
NotBefore: jose.NewNumericDate(now),
Expiry: jose.NewNumericDate(now.Add(time.Minute)),
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Audience: validAud,
ID: jti,
},
SANS: []string{"test.smallstep.com"},
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}
raw, err := jose.Signed(sig).Claims(cl).CompactSerialize()
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assert.FatalError(t, err)
csr, err := getCSR(priv)
assert.FatalError(t, err)
body, err := json.Marshal(&api.SignRequest{
CsrPEM: api.CertificateRequest{CertificateRequest: csr},
OTT: raw,
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NotBefore: api.NewTimeDuration(now),
NotAfter: api.NewTimeDuration(leafExpiry),
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})
assert.FatalError(t, err)
return &signTest{
ca: ca,
body: string(body),
status: http.StatusCreated,
}
},
"ok-backwards-compat-missing-subject-SAN": func(t *testing.T) *signTest {
jti, err := randutil.ASCII(32)
assert.FatalError(t, err)
cl := struct {
jose.Claims
SANS []string `json:"sans"`
}{
Claims: jose.Claims{
Subject: "test.smallstep.com",
Issuer: "step-cli",
NotBefore: jose.NewNumericDate(now),
Expiry: jose.NewNumericDate(now.Add(time.Minute)),
Audience: validAud,
ID: jti,
},
}
raw, err := jose.Signed(sig).Claims(cl).CompactSerialize()
assert.FatalError(t, err)
csr, err := getCSR(priv)
assert.FatalError(t, err)
body, err := json.Marshal(&api.SignRequest{
CsrPEM: api.CertificateRequest{CertificateRequest: csr},
OTT: raw,
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NotBefore: api.NewTimeDuration(now),
NotAfter: api.NewTimeDuration(leafExpiry),
})
assert.FatalError(t, err)
return &signTest{
ca: ca,
body: string(body),
status: http.StatusCreated,
}
},
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}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
rq, err := http.NewRequest("POST", "/sign", strings.NewReader(tc.body))
assert.FatalError(t, err)
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var sign api.SignResponse
assert.FatalError(t, readJSON(body, &sign))
leaf := sign.ServerPEM.Certificate
intermediate := sign.CaPEM.Certificate
assert.Equals(t, leaf.NotBefore, now.Truncate(time.Second))
assert.Equals(t, leaf.NotAfter, leafExpiry.Truncate(time.Second))
assert.Equals(t, leaf.Subject.String(),
pkix.Name{
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Country: []string{asn1dn.Country},
Organization: []string{asn1dn.Organization},
Locality: []string{asn1dn.Locality},
StreetAddress: []string{asn1dn.StreetAddress},
Province: []string{asn1dn.Province},
CommonName: asn1dn.CommonName,
}.String())
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assert.Equals(t, leaf.Issuer, intermediate.Subject)
assert.Equals(t, leaf.SignatureAlgorithm, x509.ECDSAWithSHA256)
assert.Equals(t, leaf.PublicKeyAlgorithm, x509.ECDSA)
assert.Equals(t, leaf.ExtKeyUsage,
[]x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth})
assert.Equals(t, leaf.DNSNames, []string{"test.smallstep.com"})
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subjectKeyID, err := generateSubjectKeyID(pub)
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assert.FatalError(t, err)
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assert.Equals(t, leaf.SubjectKeyId, subjectKeyID)
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assert.Equals(t, leaf.AuthorityKeyId, intermediateCert.SubjectKeyId)
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realIntermediate, err := x509.ParseCertificate(intermediateCert.Raw)
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assert.FatalError(t, err)
assert.Equals(t, intermediate, realIntermediate)
} else {
err := readError(body)
if tc.errMsg == "" {
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assert.FatalError(t, errors.New("must validate response error"))
}
assert.HasPrefix(t, err.Error(), tc.errMsg)
}
}
})
}
}
func TestCAProvisioners(t *testing.T) {
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
ca, err := New(config)
assert.FatalError(t, err)
type ekt struct {
ca *CA
status int
errMsg string
}
tests := map[string]func(t *testing.T) *ekt{
"ok": func(t *testing.T) *ekt {
return &ekt{
ca: ca,
status: http.StatusOK,
}
},
}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
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rq, err := http.NewRequest("GET", "/provisioners", strings.NewReader(""))
assert.FatalError(t, err)
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var resp api.ProvisionersResponse
assert.FatalError(t, readJSON(body, &resp))
a, err := json.Marshal(config.AuthorityConfig.Provisioners)
assert.FatalError(t, err)
b, err := json.Marshal(resp.Provisioners)
assert.FatalError(t, err)
assert.Equals(t, a, b)
} else {
err := readError(body)
if tc.errMsg == "" {
assert.FatalError(t, errors.New("must validate response error"))
}
assert.HasPrefix(t, err.Error(), tc.errMsg)
}
}
})
}
}
func TestCAProvisionerEncryptedKey(t *testing.T) {
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
ca, err := New(config)
assert.FatalError(t, err)
type ekt struct {
ca *CA
kid string
expectedKey string
status int
errMsg string
}
tests := map[string]func(t *testing.T) *ekt{
"not-found": func(t *testing.T) *ekt {
return &ekt{
ca: ca,
kid: "foo",
status: http.StatusNotFound,
errMsg: errs.NotFoundDefaultMsg,
}
},
"ok": func(t *testing.T) *ekt {
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p := config.AuthorityConfig.Provisioners[2].(*provisioner.JWK)
return &ekt{
ca: ca,
kid: p.Key.KeyID,
expectedKey: p.EncryptedKey,
status: http.StatusOK,
}
},
}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
rq, err := http.NewRequest("GET", fmt.Sprintf("/provisioners/%s/encrypted-key", tc.kid), strings.NewReader(""))
assert.FatalError(t, err)
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var ek api.ProvisionerKeyResponse
assert.FatalError(t, readJSON(body, &ek))
assert.Equals(t, ek.Key, tc.expectedKey)
} else {
err := readError(body)
if tc.errMsg == "" {
assert.FatalError(t, errors.New("must validate response error"))
}
assert.HasPrefix(t, err.Error(), tc.errMsg)
}
}
})
}
}
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func TestCARoot(t *testing.T) {
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
ca, err := New(config)
assert.FatalError(t, err)
rootCrt, err := pemutil.ReadCertificate("testdata/secrets/root_ca.crt")
assert.FatalError(t, err)
type rootTest struct {
ca *CA
sha string
status int
errMsg string
}
tests := map[string]func(t *testing.T) *rootTest{
"not-found": func(t *testing.T) *rootTest {
return &rootTest{
ca: ca,
sha: "foo",
status: http.StatusNotFound,
errMsg: errs.NotFoundDefaultMsg,
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}
},
"success": func(t *testing.T) *rootTest {
return &rootTest{
ca: ca,
sha: "ef742f95dc0d8aa82d3cca4017af6dac3fce84290344159891952d18c53eefe7",
status: http.StatusOK,
}
},
}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
rq, err := http.NewRequest("GET", fmt.Sprintf("/root/%s", tc.sha), strings.NewReader(""))
assert.FatalError(t, err)
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var root api.RootResponse
assert.FatalError(t, readJSON(body, &root))
assert.Equals(t, root.RootPEM.Certificate, rootCrt)
} else {
err := readError(body)
if tc.errMsg == "" {
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assert.FatalError(t, errors.New("must validate response error"))
}
assert.HasPrefix(t, err.Error(), tc.errMsg)
}
}
})
}
}
func TestCAHealth(t *testing.T) {
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
ca, err := New(config)
assert.FatalError(t, err)
type rootTest struct {
ca *CA
status int
}
tests := map[string]func(t *testing.T) *rootTest{
"success": func(t *testing.T) *rootTest {
return &rootTest{
ca: ca,
status: http.StatusOK,
}
},
}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
rq, err := http.NewRequest("GET", "/health", strings.NewReader(""))
assert.FatalError(t, err)
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var health api.HealthResponse
assert.FatalError(t, readJSON(body, &health))
assert.Equals(t, health, api.HealthResponse{Status: "ok"})
}
}
})
}
}
func TestCARenew(t *testing.T) {
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pub, priv, err := keyutil.GenerateDefaultKeyPair()
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assert.FatalError(t, err)
asn1dn := &authority.ASN1DN{
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Country: "Tazmania",
Organization: "Acme Co",
Locality: "Landscapes",
Province: "Sudden Cliffs",
StreetAddress: "TNT",
CommonName: "test",
}
config, err := authority.LoadConfiguration("testdata/ca.json")
assert.FatalError(t, err)
config.AuthorityConfig.Template = asn1dn
ca, err := New(config)
assert.FatalError(t, err)
assert.FatalError(t, err)
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intermediateCert, err := pemutil.ReadCertificate("testdata/secrets/intermediate_ca.crt")
assert.FatalError(t, err)
intermediateKey, err := pemutil.Read("testdata/secrets/intermediate_ca_key", pemutil.WithPassword([]byte("password")))
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assert.FatalError(t, err)
now := time.Now().UTC()
leafExpiry := now.Add(time.Minute * 5)
type renewTest struct {
ca *CA
tlsConnState *tls.ConnectionState
status int
errMsg string
}
tests := map[string]func(t *testing.T) *renewTest{
"request-missing-tls": func(t *testing.T) *renewTest {
return &renewTest{
ca: ca,
tlsConnState: nil,
status: http.StatusBadRequest,
errMsg: errs.BadRequestPrefix,
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}
},
"request-missing-peer-certificate": func(t *testing.T) *renewTest {
return &renewTest{
ca: ca,
tlsConnState: &tls.ConnectionState{PeerCertificates: []*x509.Certificate{}},
status: http.StatusBadRequest,
errMsg: errs.BadRequestPrefix,
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}
},
"success": func(t *testing.T) *renewTest {
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cr, err := x509util.CreateCertificateRequest("test", []string{"funk"}, priv.(crypto.Signer))
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assert.FatalError(t, err)
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cert, err := x509util.NewCertificate(cr)
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assert.FatalError(t, err)
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crt := cert.GetCertificate()
crt.NotBefore = time.Now()
crt.NotAfter = leafExpiry
crt, err = x509util.CreateCertificate(crt, intermediateCert, pub, intermediateKey.(crypto.Signer))
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assert.FatalError(t, err)
return &renewTest{
ca: ca,
tlsConnState: &tls.ConnectionState{
PeerCertificates: []*x509.Certificate{crt},
},
status: http.StatusCreated,
}
},
}
for name, genTestCase := range tests {
t.Run(name, func(t *testing.T) {
tc := genTestCase(t)
rq, err := http.NewRequest("POST", "/renew", strings.NewReader(""))
assert.FatalError(t, err)
rq.TLS = tc.tlsConnState
rr := httptest.NewRecorder()
tc.ca.srv.Handler.ServeHTTP(rr, rq)
if assert.Equals(t, rr.Code, tc.status) {
body := &ClosingBuffer{rr.Body}
if rr.Code < http.StatusBadRequest {
var sign api.SignResponse
assert.FatalError(t, readJSON(body, &sign))
leaf := sign.ServerPEM.Certificate
intermediate := sign.CaPEM.Certificate
assert.Equals(t, leaf.NotBefore, now.Truncate(time.Second))
assert.Equals(t, leaf.NotAfter, leafExpiry.Truncate(time.Second))
assert.Equals(t, leaf.Subject.String(),
pkix.Name{
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CommonName: asn1dn.CommonName,
}.String())
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assert.Equals(t, leaf.Issuer, intermediate.Subject)
assert.Equals(t, leaf.SignatureAlgorithm, x509.ECDSAWithSHA256)
assert.Equals(t, leaf.PublicKeyAlgorithm, x509.ECDSA)
assert.Equals(t, leaf.ExtKeyUsage,
[]x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth})
assert.Equals(t, leaf.DNSNames, []string{"funk"})
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subjectKeyID, err := generateSubjectKeyID(pub)
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assert.FatalError(t, err)
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assert.Equals(t, leaf.SubjectKeyId, subjectKeyID)
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assert.Equals(t, leaf.AuthorityKeyId, intermediateCert.SubjectKeyId)
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realIntermediate, err := x509.ParseCertificate(intermediateCert.Raw)
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assert.FatalError(t, err)
assert.Equals(t, intermediate, realIntermediate)
assert.Equals(t, *sign.TLSOptions, authority.DefaultTLSOptions)
} else {
err := readError(body)
if tc.errMsg == "" {
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assert.FatalError(t, errors.New("must validate response error"))
}
assert.HasPrefix(t, err.Error(), tc.errMsg)
}
}
})
}
}