package ca import ( "crypto/x509" "fmt" "testing" "time" "github.com/stretchr/testify/require" "github.com/hashicorp/consul/agent/connect" "github.com/hashicorp/consul/agent/consul/fsm" "github.com/hashicorp/consul/agent/consul/state" "github.com/hashicorp/consul/agent/structs" ) type consulCAMockDelegate struct { state *state.Store } func (c *consulCAMockDelegate) ProviderState(id string) (*structs.CAConsulProviderState, error) { _, s, err := c.state.CAProviderState(id) return s, err } func (c *consulCAMockDelegate) ApplyCARequest(req *structs.CARequest) (interface{}, error) { idx, _, err := c.state.CAConfig(nil) if err != nil { return nil, err } result := fsm.ApplyConnectCAOperationFromRequest(c.state, req, idx+1) if err, ok := result.(error); ok && err != nil { return nil, err } return result, nil } func newMockDelegate(t *testing.T, conf *structs.CAConfiguration) *consulCAMockDelegate { s := state.NewStateStore(nil) if s == nil { t.Fatalf("missing state store") } if err := s.CASetConfig(conf.RaftIndex.CreateIndex, conf); err != nil { t.Fatalf("err: %s", err) } return &consulCAMockDelegate{s} } func testConsulCAConfig() *structs.CAConfiguration { return &structs.CAConfiguration{ ClusterID: connect.TestClusterID, Provider: "consul", Config: map[string]interface{}{ // Tests duration parsing after msgpack type mangling during raft apply. "LeafCertTTL": []byte("72h"), "IntermediateCertTTL": []byte("288h"), "RootCertTTL": []byte("87600h"), }, } } func testProviderConfig(caCfg *structs.CAConfiguration) ProviderConfig { return ProviderConfig{ ClusterID: caCfg.ClusterID, Datacenter: "dc1", IsPrimary: true, RawConfig: caCfg.Config, } } func requireNotEncoded(t *testing.T, v []byte) { t.Helper() require.False(t, connect.IsHexString(v)) } func TestConsulCAProvider_Bootstrap(t *testing.T) { t.Parallel() conf := testConsulCAConfig() delegate := newMockDelegate(t, conf) provider := TestConsulProvider(t, delegate) require.NoError(t, provider.Configure(testProviderConfig(conf))) root, err := provider.GenerateRoot() require.NoError(t, err) // Intermediate should be the same cert. inter, err := provider.ActiveIntermediate() require.NoError(t, err) require.Equal(t, root.PEM, inter) // Should be a valid cert parsed, err := connect.ParseCert(root.PEM) require.NoError(t, err) require.Equal(t, parsed.URIs[0].String(), fmt.Sprintf("spiffe://%s.consul", conf.ClusterID)) requireNotEncoded(t, parsed.SubjectKeyId) requireNotEncoded(t, parsed.AuthorityKeyId) // test that the root cert ttl is the same as the expected value // notice that we allow a margin of "error" of 10 minutes between the // generateCA() creation and this check defaultRootCertTTL, err := time.ParseDuration(structs.DefaultRootCertTTL) require.NoError(t, err) expectedNotAfter := time.Now().Add(defaultRootCertTTL).UTC() require.WithinDuration(t, expectedNotAfter, parsed.NotAfter, 10*time.Minute, "expected parsed cert ttl to be the same as the value configured") } func TestConsulCAProvider_Bootstrap_WithCert(t *testing.T) { t.Parallel() // Make sure setting a custom private key/root cert works. rootCA := connect.TestCAWithTTL(t, nil, 5*time.Hour) conf := testConsulCAConfig() conf.Config = map[string]interface{}{ "PrivateKey": rootCA.SigningKey, "RootCert": rootCA.RootCert, } delegate := newMockDelegate(t, conf) provider := TestConsulProvider(t, delegate) require.NoError(t, provider.Configure(testProviderConfig(conf))) root, err := provider.GenerateRoot() require.NoError(t, err) require.Equal(t, root.PEM, rootCA.RootCert) // Should be a valid cert parsed, err := connect.ParseCert(root.PEM) require.NoError(t, err) // test that the default root cert ttl was not applied to the provided cert defaultRootCertTTL, err := time.ParseDuration(structs.DefaultRootCertTTL) require.NoError(t, err) defaultNotAfter := time.Now().Add(defaultRootCertTTL).UTC() // we can't compare given the "delta" between the time the cert is generated // and when we start the test; so just look at the years for now, given different years require.NotEqualf(t, defaultNotAfter.Year(), parsed.NotAfter.Year(), "parsed cert ttl expected to be different from default root cert ttl") } func TestConsulCAProvider_SignLeaf(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() for _, tc := range KeyTestCases { tc := tc t.Run(tc.Desc, func(t *testing.T) { conf := testConsulCAConfig() conf.Config["LeafCertTTL"] = "1h" conf.Config["PrivateKeyType"] = tc.KeyType conf.Config["PrivateKeyBits"] = tc.KeyBits delegate := newMockDelegate(t, conf) provider := TestConsulProvider(t, delegate) require.NoError(t, provider.Configure(testProviderConfig(conf))) _, err := provider.GenerateRoot() require.NoError(t, err) spiffeService := &connect.SpiffeIDService{ Host: connect.TestClusterID + ".consul", Namespace: "default", Datacenter: "dc1", Service: "foo", } // Generate a leaf cert for the service. { raw, _ := connect.TestCSR(t, spiffeService) csr, err := connect.ParseCSR(raw) require.NoError(t, err) cert, err := provider.Sign(csr) require.NoError(t, err) requireTrailingNewline(t, cert) parsed, err := connect.ParseCert(cert) require.NoError(t, err) require.Equal(t, spiffeService.URI(), parsed.URIs[0]) require.Empty(t, parsed.Subject.CommonName) require.Equal(t, uint64(3), parsed.SerialNumber.Uint64()) subjectKeyID, err := connect.KeyId(csr.PublicKey) require.NoError(t, err) require.Equal(t, subjectKeyID, parsed.SubjectKeyId) requireNotEncoded(t, parsed.SubjectKeyId) requireNotEncoded(t, parsed.AuthorityKeyId) // Ensure the cert is valid now and expires within the correct limit. now := time.Now() require.True(t, parsed.NotAfter.Sub(now) < time.Hour) require.True(t, parsed.NotBefore.Before(now)) } // Generate a new cert for another service and make sure // the serial number is incremented. spiffeService.Service = "bar" { raw, _ := connect.TestCSR(t, spiffeService) csr, err := connect.ParseCSR(raw) require.NoError(t, err) cert, err := provider.Sign(csr) require.NoError(t, err) parsed, err := connect.ParseCert(cert) require.NoError(t, err) require.Equal(t, spiffeService.URI(), parsed.URIs[0]) require.Empty(t, parsed.Subject.CommonName) require.Equal(t, uint64(4), parsed.SerialNumber.Uint64()) requireNotEncoded(t, parsed.SubjectKeyId) requireNotEncoded(t, parsed.AuthorityKeyId) // Ensure the cert is valid now and expires within the correct limit. require.True(t, time.Until(parsed.NotAfter) < 3*24*time.Hour) require.True(t, parsed.NotBefore.Before(time.Now())) } spiffeAgent := &connect.SpiffeIDAgent{ Host: connect.TestClusterID + ".consul", Datacenter: "dc1", Agent: "uuid", } // Generate a leaf cert for an agent. { raw, _ := connect.TestCSR(t, spiffeAgent) csr, err := connect.ParseCSR(raw) require.NoError(t, err) cert, err := provider.Sign(csr) require.NoError(t, err) parsed, err := connect.ParseCert(cert) require.NoError(t, err) require.Equal(t, spiffeAgent.URI(), parsed.URIs[0]) require.Empty(t, parsed.Subject.CommonName) require.Equal(t, uint64(5), parsed.SerialNumber.Uint64()) requireNotEncoded(t, parsed.SubjectKeyId) requireNotEncoded(t, parsed.AuthorityKeyId) // Ensure the cert is valid now and expires within the correct limit. now := time.Now() require.True(t, parsed.NotAfter.Sub(now) < time.Hour) require.True(t, parsed.NotBefore.Before(now)) } }) } } func TestConsulCAProvider_CrossSignCA(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() tests := CASigningKeyTypeCases() for _, tc := range tests { tc := tc t.Run(tc.Desc, func(t *testing.T) { conf1 := testConsulCAConfig() delegate1 := newMockDelegate(t, conf1) provider1 := TestConsulProvider(t, delegate1) conf1.Config["PrivateKeyType"] = tc.SigningKeyType conf1.Config["PrivateKeyBits"] = tc.SigningKeyBits require.NoError(t, provider1.Configure(testProviderConfig(conf1))) _, err := provider1.GenerateRoot() require.NoError(t, err) conf2 := testConsulCAConfig() conf2.CreateIndex = 10 delegate2 := newMockDelegate(t, conf2) provider2 := TestConsulProvider(t, delegate2) conf2.Config["PrivateKeyType"] = tc.CSRKeyType conf2.Config["PrivateKeyBits"] = tc.CSRKeyBits require.NoError(t, provider2.Configure(testProviderConfig(conf2))) _, err = provider2.GenerateRoot() require.NoError(t, err) testCrossSignProviders(t, provider1, provider2) }) } } func testCrossSignProviders(t *testing.T, provider1, provider2 Provider) { // Get the root from the new provider to be cross-signed. root, err := provider2.GenerateRoot() require.NoError(t, err) newRoot, err := connect.ParseCert(root.PEM) require.NoError(t, err) oldSubject := newRoot.Subject.CommonName requireNotEncoded(t, newRoot.SubjectKeyId) requireNotEncoded(t, newRoot.AuthorityKeyId) newInterPEM, err := provider2.ActiveIntermediate() require.NoError(t, err) newIntermediate, err := connect.ParseCert(newInterPEM) require.NoError(t, err) requireNotEncoded(t, newIntermediate.SubjectKeyId) requireNotEncoded(t, newIntermediate.AuthorityKeyId) // Have provider1 cross sign our new root cert. xcPEM, err := provider1.CrossSignCA(newRoot) require.NoError(t, err) xc, err := connect.ParseCert(xcPEM) require.NoError(t, err) requireNotEncoded(t, xc.SubjectKeyId) requireNotEncoded(t, xc.AuthorityKeyId) p1Root, err := provider1.GenerateRoot() require.NoError(t, err) oldRoot, err := connect.ParseCert(p1Root.PEM) require.NoError(t, err) requireNotEncoded(t, oldRoot.SubjectKeyId) requireNotEncoded(t, oldRoot.AuthorityKeyId) // AuthorityKeyID should now be the signing root's, SubjectKeyId should be kept. require.Equal(t, oldRoot.SubjectKeyId, xc.AuthorityKeyId, "newSKID=%x\nnewAKID=%x\noldSKID=%x\noldAKID=%x\nxcSKID=%x\nxcAKID=%x", newRoot.SubjectKeyId, newRoot.AuthorityKeyId, oldRoot.SubjectKeyId, oldRoot.AuthorityKeyId, xc.SubjectKeyId, xc.AuthorityKeyId) require.Equal(t, newRoot.SubjectKeyId, xc.SubjectKeyId) // Subject name should not have changed. require.Equal(t, oldSubject, xc.Subject.CommonName) // Issuer should be the signing root. require.Equal(t, oldRoot.Issuer.CommonName, xc.Issuer.CommonName) // Get a leaf cert so we can verify against the cross-signed cert. spiffeService := &connect.SpiffeIDService{ Host: connect.TestClusterID + ".consul", Namespace: "default", Datacenter: "dc1", Service: "foo", } raw, _ := connect.TestCSR(t, spiffeService) leafCsr, err := connect.ParseCSR(raw) require.NoError(t, err) leafPEM, err := provider2.Sign(leafCsr) require.NoError(t, err) cert, err := connect.ParseCert(leafPEM) require.NoError(t, err) requireNotEncoded(t, cert.SubjectKeyId) requireNotEncoded(t, cert.AuthorityKeyId) // Check that the leaf signed by the new cert can be verified by either root // certificate by using the new intermediate + cross-signed cert. intermediatePool := x509.NewCertPool() intermediatePool.AddCert(newIntermediate) intermediatePool.AddCert(xc) for _, root := range []*x509.Certificate{oldRoot, newRoot} { rootPool := x509.NewCertPool() rootPool.AddCert(root) _, err = cert.Verify(x509.VerifyOptions{ Intermediates: intermediatePool, Roots: rootPool, }) require.NoError(t, err) } } func testCrossSignProvidersShouldFail(t *testing.T, provider1, provider2 Provider) { t.Helper() // Get the root from the new provider to be cross-signed. root, err := provider2.GenerateRoot() require.NoError(t, err) newRoot, err := connect.ParseCert(root.PEM) require.NoError(t, err) requireNotEncoded(t, newRoot.SubjectKeyId) requireNotEncoded(t, newRoot.AuthorityKeyId) newInterPEM, err := provider2.ActiveIntermediate() require.NoError(t, err) newIntermediate, err := connect.ParseCert(newInterPEM) require.NoError(t, err) requireNotEncoded(t, newIntermediate.SubjectKeyId) requireNotEncoded(t, newIntermediate.AuthorityKeyId) // Have provider1 cross sign our new root cert. _, err = provider1.CrossSignCA(newRoot) require.Error(t, err) } func TestConsulProvider_SignIntermediate(t *testing.T) { if testing.Short() { t.Skip("too slow for testing.Short") } t.Parallel() tests := CASigningKeyTypeCases() for _, tc := range tests { tc := tc t.Run(tc.Desc, func(t *testing.T) { conf1 := testConsulCAConfig() delegate1 := newMockDelegate(t, conf1) provider1 := TestConsulProvider(t, delegate1) conf1.Config["PrivateKeyType"] = tc.SigningKeyType conf1.Config["PrivateKeyBits"] = tc.SigningKeyBits require.NoError(t, provider1.Configure(testProviderConfig(conf1))) _, err := provider1.GenerateRoot() require.NoError(t, err) conf2 := testConsulCAConfig() conf2.CreateIndex = 10 delegate2 := newMockDelegate(t, conf2) provider2 := TestConsulProvider(t, delegate2) conf2.Config["PrivateKeyType"] = tc.CSRKeyType conf2.Config["PrivateKeyBits"] = tc.CSRKeyBits cfg := testProviderConfig(conf2) cfg.IsPrimary = false cfg.Datacenter = "dc2" require.NoError(t, provider2.Configure(cfg)) testSignIntermediateCrossDC(t, provider1, provider2) }) } } func testSignIntermediateCrossDC(t *testing.T, provider1, provider2 Provider) { // Get the intermediate CSR from provider2. csrPEM, opaque, err := provider2.GenerateIntermediateCSR() require.NoError(t, err) csr, err := connect.ParseCSR(csrPEM) require.NoError(t, err) // Sign the CSR with provider1. intermediatePEM, err := provider1.SignIntermediate(csr) require.NoError(t, err) root, err := provider1.GenerateRoot() require.NoError(t, err) rootPEM := root.PEM // Give the new intermediate to provider2 to use. require.NoError(t, provider2.SetIntermediate(intermediatePEM, rootPEM, opaque)) // Have provider2 sign a leaf cert and make sure the chain is correct. spiffeService := &connect.SpiffeIDService{ Host: connect.TestClusterID + ".consul", Namespace: "default", Datacenter: "dc1", Service: "foo", } raw, _ := connect.TestCSR(t, spiffeService) leafCsr, err := connect.ParseCSR(raw) require.NoError(t, err) leafPEM, err := provider2.Sign(leafCsr) require.NoError(t, err) cert, err := connect.ParseCert(leafPEM) require.NoError(t, err) requireNotEncoded(t, cert.SubjectKeyId) requireNotEncoded(t, cert.AuthorityKeyId) // Check that the leaf signed by the new cert can be verified using the // returned cert chain (signed intermediate + remote root). intermediatePool := x509.NewCertPool() intermediatePool.AppendCertsFromPEM([]byte(intermediatePEM)) rootPool := x509.NewCertPool() rootPool.AppendCertsFromPEM([]byte(rootPEM)) _, err = cert.Verify(x509.VerifyOptions{ Intermediates: intermediatePool, Roots: rootPool, }) require.NoError(t, err) } func TestConsulCAProvider_MigrateOldID(t *testing.T) { cases := []struct { name string oldID string }{ { name: "original-unhashed", oldID: ",", }, { name: "hash-v1", oldID: hexStringHash(",,true"), }, } for _, tc := range cases { t.Run(tc.name, func(t *testing.T) { conf := testConsulCAConfig() delegate := newMockDelegate(t, conf) // Create an entry with an old-style ID. _, err := delegate.ApplyCARequest(&structs.CARequest{ Op: structs.CAOpSetProviderState, ProviderState: &structs.CAConsulProviderState{ ID: tc.oldID, }, }) require.NoError(t, err) _, providerState, err := delegate.state.CAProviderState(tc.oldID) require.NoError(t, err) require.NotNil(t, providerState) provider := TestConsulProvider(t, delegate) require.NoError(t, provider.Configure(testProviderConfig(conf))) _, err = provider.GenerateRoot() require.NoError(t, err) // After running Configure, the old ID entry should be gone. _, providerState, err = delegate.state.CAProviderState(tc.oldID) require.NoError(t, err) require.Nil(t, providerState) }) } }