open-consul/agent/connect/ca/provider_consul_test.go

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package ca
import (
"crypto/x509"
"fmt"
"testing"
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"time"
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"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/consul/state"
"github.com/hashicorp/consul/agent/structs"
"github.com/stretchr/testify/require"
)
type consulCAMockDelegate struct {
state *state.Store
}
func (c *consulCAMockDelegate) State() *state.Store {
return c.state
}
func (c *consulCAMockDelegate) ApplyCARequest(req *structs.CARequest) error {
idx, _, err := c.state.CAConfig()
if err != nil {
return err
}
switch req.Op {
case structs.CAOpSetProviderState:
_, err := c.state.CASetProviderState(idx+1, req.ProviderState)
if err != nil {
return err
}
return nil
case structs.CAOpDeleteProviderState:
if err := c.state.CADeleteProviderState(req.ProviderState.ID); err != nil {
return err
}
return nil
default:
return fmt.Errorf("Invalid CA operation '%s'", req.Op)
}
}
func newMockDelegate(t *testing.T, conf *structs.CAConfiguration) *consulCAMockDelegate {
s, err := state.NewStateStore(nil)
if err != nil {
t.Fatalf("err: %s", err)
}
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: "asdf",
Provider: "consul",
Fix CA pruning when CA config uses string durations. (#4669) * Fix CA pruning when CA config uses string durations. The tl;dr here is: - Configuring LeafCertTTL with a string like "72h" is how we do it by default and should be supported - Most of our tests managed to escape this by defining them as time.Duration directly - Out actual default value is a string - Since this is stored in a map[string]interface{} config, when it is written to Raft it goes through a msgpack encode/decode cycle (even though it's written from server not over RPC). - msgpack decode leaves the string as a `[]uint8` - Some of our parsers required string and failed - So after 1 hour, a default configured server would throw an error about pruning old CAs - If a new CA was configured that set LeafCertTTL as a time.Duration, things might be OK after that, but if a new CA was just configured from config file, intialization would cause same issue but always fail still so would never prune the old CA. - Mostly this is just a janky error that got passed tests due to many levels of complicated encoding/decoding. tl;dr of the tl;dr: Yay for type safety. Map[string]interface{} combined with msgpack always goes wrong but we somehow get bitten every time in a new way :D We already fixed this once! The main CA config had the same problem so @kyhavlov already wrote the mapstructure DecodeHook that fixes it. It wasn't used in several places it needed to be and one of those is notw in `structs` which caused a dependency cycle so I've moved them. This adds a whole new test thta explicitly tests the case that broke here. It also adds tests that would have failed in other places before (Consul and Vaul provider parsing functions). I'm not sure if they would ever be affected as it is now as we've not seen things broken with them but it seems better to explicitly test that and support it to not be bitten a third time! * Typo fix * Fix bad Uint8 usage
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Config: map[string]interface{}{
// Tests duration parsing after msgpack type mangling during raft apply.
"LeafCertTTL": []uint8("72h"),
},
}
}
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func TestConsulCAProvider_Bootstrap(t *testing.T) {
t.Parallel()
require := require.New(t)
conf := testConsulCAConfig()
delegate := newMockDelegate(t, conf)
provider := &ConsulProvider{Delegate: delegate}
require.NoError(provider.Configure(conf.ClusterID, true, conf.Config))
require.NoError(provider.GenerateRoot())
root, err := provider.ActiveRoot()
require.NoError(err)
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// Intermediate should be the same cert.
inter, err := provider.ActiveIntermediate()
require.NoError(err)
require.Equal(root, inter)
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// Should be a valid cert
parsed, err := connect.ParseCert(root)
require.NoError(err)
require.Equal(parsed.URIs[0].String(), fmt.Sprintf("spiffe://%s.consul", conf.ClusterID))
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}
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func TestConsulCAProvider_Bootstrap_WithCert(t *testing.T) {
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t.Parallel()
// Make sure setting a custom private key/root cert works.
require := require.New(t)
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rootCA := connect.TestCA(t, nil)
conf := testConsulCAConfig()
conf.Config = map[string]interface{}{
"PrivateKey": rootCA.SigningKey,
"RootCert": rootCA.RootCert,
}
delegate := newMockDelegate(t, conf)
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provider := &ConsulProvider{Delegate: delegate}
require.NoError(provider.Configure(conf.ClusterID, true, conf.Config))
require.NoError(provider.GenerateRoot())
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root, err := provider.ActiveRoot()
require.NoError(err)
require.Equal(root, rootCA.RootCert)
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}
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func TestConsulCAProvider_SignLeaf(t *testing.T) {
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t.Parallel()
require := require.New(t)
conf := testConsulCAConfig()
conf.Config["LeafCertTTL"] = "1h"
delegate := newMockDelegate(t, conf)
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provider := &ConsulProvider{Delegate: delegate}
require.NoError(provider.Configure(conf.ClusterID, true, conf.Config))
require.NoError(provider.GenerateRoot())
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spiffeService := &connect.SpiffeIDService{
Host: "node1",
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Namespace: "default",
Datacenter: "dc1",
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Service: "foo",
}
// Generate a leaf cert for the service.
{
raw, _ := connect.TestCSR(t, spiffeService)
csr, err := connect.ParseCSR(raw)
require.NoError(err)
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cert, err := provider.Sign(csr)
require.NoError(err)
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parsed, err := connect.ParseCert(cert)
require.NoError(err)
require.Equal(parsed.URIs[0], spiffeService.URI())
require.Equal(parsed.Subject.CommonName, "foo")
require.Equal(uint64(2), parsed.SerialNumber.Uint64())
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// Ensure the cert is valid now and expires within the correct limit.
now := time.Now()
require.True(parsed.NotAfter.Sub(now) < time.Hour)
require.True(parsed.NotBefore.Before(now))
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}
// 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(err)
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cert, err := provider.Sign(csr)
require.NoError(err)
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parsed, err := connect.ParseCert(cert)
require.NoError(err)
require.Equal(parsed.URIs[0], spiffeService.URI())
require.Equal(parsed.Subject.CommonName, "bar")
require.Equal(parsed.SerialNumber.Uint64(), uint64(2))
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// Ensure the cert is valid now and expires within the correct limit.
require.True(parsed.NotAfter.Sub(time.Now()) < 3*24*time.Hour)
require.True(parsed.NotBefore.Before(time.Now()))
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}
}
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func TestConsulCAProvider_CrossSignCA(t *testing.T) {
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t.Parallel()
require := require.New(t)
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conf1 := testConsulCAConfig()
delegate1 := newMockDelegate(t, conf1)
provider1 := &ConsulProvider{Delegate: delegate1}
require.NoError(provider1.Configure(conf1.ClusterID, true, conf1.Config))
require.NoError(provider1.GenerateRoot())
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conf2 := testConsulCAConfig()
conf2.CreateIndex = 10
delegate2 := newMockDelegate(t, conf2)
provider2 := &ConsulProvider{Delegate: delegate2}
require.NoError(provider2.Configure(conf2.ClusterID, true, conf2.Config))
require.NoError(provider2.GenerateRoot())
testCrossSignProviders(t, provider1, provider2)
}
func testCrossSignProviders(t *testing.T, provider1, provider2 Provider) {
require := require.New(t)
// Get the root from the new provider to be cross-signed.
newRootPEM, err := provider2.ActiveRoot()
require.NoError(err)
newRoot, err := connect.ParseCert(newRootPEM)
require.NoError(err)
oldSubject := newRoot.Subject.CommonName
newInterPEM, err := provider2.ActiveIntermediate()
require.NoError(err)
newIntermediate, err := connect.ParseCert(newInterPEM)
require.NoError(err)
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// Have provider1 cross sign our new root cert.
xcPEM, err := provider1.CrossSignCA(newRoot)
require.NoError(err)
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xc, err := connect.ParseCert(xcPEM)
require.NoError(err)
oldRootPEM, err := provider1.ActiveRoot()
require.NoError(err)
oldRoot, err := connect.ParseCert(oldRootPEM)
require.NoError(err)
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// AuthorityKeyID should now be the signing root's, SubjectKeyId should be kept.
require.Equal(oldRoot.AuthorityKeyId, xc.AuthorityKeyId)
require.Equal(newRoot.SubjectKeyId, xc.SubjectKeyId)
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// Subject name should not have changed.
require.Equal(oldSubject, xc.Subject.CommonName)
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// Issuer should be the signing root.
require.Equal(oldRoot.Issuer.CommonName, xc.Issuer.CommonName)
// Get a leaf cert so we can verify against the cross-signed cert.
spiffeService := &connect.SpiffeIDService{
Host: "node1",
Namespace: "default",
Datacenter: "dc1",
Service: "foo",
}
raw, _ := connect.TestCSR(t, spiffeService)
leafCsr, err := connect.ParseCSR(raw)
require.NoError(err)
leafPEM, err := provider2.Sign(leafCsr)
require.NoError(err)
cert, err := connect.ParseCert(leafPEM)
require.NoError(err)
// 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(err)
}
}
func TestConsulProvider_SignIntermediate(t *testing.T) {
t.Parallel()
require := require.New(t)
conf1 := testConsulCAConfig()
delegate1 := newMockDelegate(t, conf1)
provider1 := &ConsulProvider{Delegate: delegate1}
require.NoError(provider1.Configure(conf1.ClusterID, true, conf1.Config))
require.NoError(provider1.GenerateRoot())
conf2 := testConsulCAConfig()
conf2.CreateIndex = 10
delegate2 := newMockDelegate(t, conf2)
provider2 := &ConsulProvider{Delegate: delegate2}
require.NoError(provider2.Configure(conf2.ClusterID, false, conf2.Config))
testSignIntermediateCrossDC(t, provider1, provider2)
}
func testSignIntermediateCrossDC(t *testing.T, provider1, provider2 Provider) {
require := require.New(t)
// Get the intermediate CSR from provider2.
csrPEM, err := provider2.GenerateIntermediateCSR()
require.NoError(err)
csr, err := connect.ParseCSR(csrPEM)
require.NoError(err)
// Sign the CSR with provider1.
intermediatePEM, err := provider1.SignIntermediate(csr)
require.NoError(err)
rootPEM, err := provider1.ActiveRoot()
require.NoError(err)
// Give the new intermediate to provider2 to use.
require.NoError(provider2.SetIntermediate(intermediatePEM, rootPEM))
// Have provider2 sign a leaf cert and make sure the chain is correct.
spiffeService := &connect.SpiffeIDService{
Host: "node1",
Namespace: "default",
Datacenter: "dc1",
Service: "foo",
}
raw, _ := connect.TestCSR(t, spiffeService)
leafCsr, err := connect.ParseCSR(raw)
require.NoError(err)
leafPEM, err := provider2.Sign(leafCsr)
require.NoError(err)
cert, err := connect.ParseCert(leafPEM)
require.NoError(err)
// 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(err)
}
func TestConsulCAProvider_MigrateOldID(t *testing.T) {
t.Parallel()
require := require.New(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: ",",
},
})
require.NoError(err)
_, providerState, err := delegate.state.CAProviderState(",")
require.NoError(err)
require.NotNil(providerState)
provider := &ConsulProvider{Delegate: delegate}
require.NoError(provider.Configure(conf.ClusterID, true, conf.Config))
require.NoError(provider.GenerateRoot())
// After running Configure, the old ID entry should be gone.
_, providerState, err = delegate.state.CAProviderState(",")
require.NoError(err)
require.Nil(providerState)
}