package ca import ( "bytes" "context" "crypto" "crypto/rand" "crypto/sha1" "crypto/tls" "crypto/x509" "crypto/x509/pkix" "encoding/asn1" "encoding/json" "encoding/pem" "fmt" "net/http" "net/http/httptest" "os" "strings" "testing" "time" "github.com/pkg/errors" "github.com/smallstep/assert" "github.com/smallstep/certificates/api" "github.com/smallstep/certificates/authority" "github.com/smallstep/certificates/authority/provisioner" "github.com/smallstep/certificates/errs" "go.step.sm/crypto/jose" "go.step.sm/crypto/keyutil" "go.step.sm/crypto/pemutil" "go.step.sm/crypto/randutil" "go.step.sm/crypto/x509util" ) 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) } 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 } func TestMain(m *testing.M) { DisableIdentity = true os.Exit(m.Run()) } func TestCASign(t *testing.T) { pub, priv, err := keyutil.GenerateDefaultKeyPair() assert.FatalError(t, err) asn1dn := &authority.ASN1DN{ 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) intermediateCert, err := pemutil.ReadCertificate("testdata/secrets/intermediate_ca.crt") assert.FatalError(t, err) clijwk, err := jose.ReadKey("testdata/secrets/step_cli_key_priv.jwk", jose.WithPassword([]byte("pass"))) 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"} 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 { return &signTest{ ca: ca, body: "invalid json", status: http.StatusBadRequest, errMsg: errs.BadRequestPrefix, } }, "fail invalid-csr-sig": func(t *testing.T) *signTest { der := []byte(`-----BEGIN CERTIFICATE REQUEST----- MIIDNjCCAh4CAQAwYzELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAkNBMRYwFAYDVQQH DA1TYW4gRnJhbmNpc2NvMRIwEAYDVQQKDAlzbWFsbHN0ZXAxGzAZBgNVBAMMEnRl c3Quc21hbGxzdGVwLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB ANPahliigZ38QpBLmQMS3MVKKZ5gapNjqR7LIEYoYWa4lTFiUnbwg8tSfIFcgLZr jNIxn7/98+JOJHKgS03NhFJoS5hej0LyypleOGJ0nk2qawYVKnn1ftoKjkfxkfZI a/5rsDF1jhNBspB/KPHWE0eimKQJbUiVG1zA1sExnXDecF3vJfBj+DPDWngx4yxR /jYEKjt4tQ6Ei752TbosrCHYeYXzkr6iAwiNz6vT/ewLb6b8JmuN8X6Y1I9ogDGx hntBJ1jAK8x3IGTjYbkm+mqVuCyhNcHtGfEHcBnUEzLAPrVFn8kGiAnU17FJ0uQ7 1C9CtUzgBRZCxSBm6Qs+Zs8CAwEAAaCBjTCBigYJKoZIhvcNAQkOMX0wezAMBgNV HRMBAf8EAjAAMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATAOBgNVHQ8B Af8EBAMCBaAwHQYDVR0RBBYwFIISdGVzdC5zbWFsbHN0ZXAuY29tMB0GA1UdDgQW BBQj6N4RTAAjhV3UBYXH72mkdOGpqzANBgkqhkiG9w0BAQsFAAOCAQEAN0/ivCBk FD53SqtRmqqc7C9saoRNvV+wDi4Sg6YGLFQLjbZPJrqQURWdHtV9O3sb3p8O5erX 9Kgq3C7fqd//0mro4GZ1GTpjsPKIMocZFfH7zEhAZlvQLRKWICjoBaOwxQum2qY/ B3+ltAXb4uqGdbI0jPkkyWGN5CQhK+ZHoYe/zGtTEmHBcPxRtJJkukQQjUgZhjU2 Z7K+w3AjOxj47XLNHHlW83QYUJ2mN+mEZF9DhrZb2ydYOlpy0V2NJwv7QrmnFaDj R0v3BFLTblIp100li3oV2QaM/yESrgo9XIjEEGzCGz5cNs5ovNadufUZDCJyyT4q ZEp7knvU2psWRw== -----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, } }, "fail unauthorized-ott": func(t *testing.T) *signTest { 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, } }, "fail commonname-claim": 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: "invalid", Issuer: "step-cli", NotBefore: jose.NewNumericDate(now), Expiry: jose.NewNumericDate(now.Add(time.Minute)), Audience: validAud, ID: jti, }, SANS: []string{"invalid"}, } 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, }) assert.FatalError(t, err) return &signTest{ ca: ca, body: string(body), status: http.StatusForbidden, errMsg: errs.ForbiddenPrefix, } }, "ok": 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, }, SANS: []string{"test.smallstep.com"}, } 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, NotBefore: api.NewTimeDuration(now), NotAfter: api.NewTimeDuration(leafExpiry), }) 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, NotBefore: api.NewTimeDuration(now), NotAfter: api.NewTimeDuration(leafExpiry), }) assert.FatalError(t, err) return &signTest{ ca: ca, body: string(body), status: http.StatusCreated, } }, } 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() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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{ Country: []string{asn1dn.Country}, Organization: []string{asn1dn.Organization}, Locality: []string{asn1dn.Locality}, StreetAddress: []string{asn1dn.StreetAddress}, Province: []string{asn1dn.Province}, CommonName: asn1dn.CommonName, }.String()) 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"}) subjectKeyID, err := generateSubjectKeyID(pub) assert.FatalError(t, err) assert.Equals(t, leaf.SubjectKeyId, subjectKeyID) assert.Equals(t, leaf.AuthorityKeyId, intermediateCert.SubjectKeyId) realIntermediate, err := x509.ParseCertificate(intermediateCert.Raw) assert.FatalError(t, err) assert.Equals(t, intermediate, realIntermediate) } else { err := readError(body) if tc.errMsg == "" { 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) rq, err := http.NewRequest("GET", "/provisioners", strings.NewReader("")) assert.FatalError(t, err) rr := httptest.NewRecorder() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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 { 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() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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) } } }) } } 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, } }, "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() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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 == "" { 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() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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) { pub, priv, err := keyutil.GenerateDefaultKeyPair() assert.FatalError(t, err) asn1dn := &authority.ASN1DN{ 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) 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"))) 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, } }, "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, } }, "success": func(t *testing.T) *renewTest { cr, err := x509util.CreateCertificateRequest("test", []string{"funk"}, priv.(crypto.Signer)) assert.FatalError(t, err) cert, err := x509util.NewCertificate(cr) assert.FatalError(t, err) crt := cert.GetCertificate() crt.NotBefore = time.Now() crt.NotAfter = leafExpiry crt, err = x509util.CreateCertificate(crt, intermediateCert, pub, intermediateKey.(crypto.Signer)) 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() ctx := authority.NewContext(context.Background(), tc.ca.auth) tc.ca.srv.Handler.ServeHTTP(rr, rq.WithContext(ctx)) 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{ CommonName: asn1dn.CommonName, }.String()) 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"}) subjectKeyID, err := generateSubjectKeyID(pub) assert.FatalError(t, err) assert.Equals(t, leaf.SubjectKeyId, subjectKeyID) assert.Equals(t, leaf.AuthorityKeyId, intermediateCert.SubjectKeyId) realIntermediate, err := x509.ParseCertificate(intermediateCert.Raw) assert.FatalError(t, err) assert.Equals(t, intermediate, realIntermediate) assert.Equals(t, *sign.TLSOptions, authority.DefaultTLSOptions) } else { err := readError(body) if tc.errMsg == "" { assert.FatalError(t, errors.New("must validate response error")) } assert.HasPrefix(t, err.Error(), tc.errMsg) } } }) } }