39d9babab3
This is instead of having the AutoConfigBackend interface provide functions for retrieving them. NOTE: the config is not reloadable. For now this is fine as we don’t look at any reloadable fields. If that changes then we should provide a way to make it reloadable.
663 lines
19 KiB
Go
663 lines
19 KiB
Go
package consul
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import (
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"encoding/base64"
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"fmt"
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"io/ioutil"
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"math/rand"
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"net"
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"os"
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"path"
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"testing"
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"time"
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"github.com/hashicorp/consul/agent/agentpb"
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"github.com/hashicorp/consul/agent/agentpb/config"
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"github.com/hashicorp/consul/agent/structs"
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"github.com/hashicorp/consul/internal/go-sso/oidcauth/oidcauthtest"
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"github.com/hashicorp/consul/sdk/testutil"
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"github.com/hashicorp/consul/tlsutil"
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"github.com/hashicorp/memberlist"
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msgpackrpc "github.com/hashicorp/net-rpc-msgpackrpc"
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"github.com/stretchr/testify/mock"
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"github.com/stretchr/testify/require"
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"gopkg.in/square/go-jose.v2/jwt"
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)
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type mockAutoConfigBackend struct {
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mock.Mock
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}
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func (m *mockAutoConfigBackend) CreateACLToken(template *structs.ACLToken) (*structs.ACLToken, error) {
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ret := m.Called(template)
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// this handles converting an untyped nil to a typed nil
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token, _ := ret.Get(0).(*structs.ACLToken)
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return token, ret.Error(1)
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}
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func (m *mockAutoConfigBackend) DatacenterJoinAddresses(segment string) ([]string, error) {
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ret := m.Called(segment)
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// this handles converting an untyped nil to a typed nil
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addrs, _ := ret.Get(0).([]string)
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return addrs, ret.Error(1)
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}
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func (m *mockAutoConfigBackend) ForwardRPC(method string, info structs.RPCInfo, args, reply interface{}) (bool, error) {
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ret := m.Called(method, info, args, reply)
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return ret.Bool(0), ret.Error(1)
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}
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func testJWTStandardClaims() jwt.Claims {
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now := time.Now()
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return jwt.Claims{
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Subject: "consul",
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Issuer: "consul",
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Audience: jwt.Audience{"consul"},
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NotBefore: jwt.NewNumericDate(now.Add(-1 * time.Second)),
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Expiry: jwt.NewNumericDate(now.Add(10 * time.Minute)),
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}
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}
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func signJWT(t *testing.T, privKey string, claims jwt.Claims, privateClaims interface{}) string {
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t.Helper()
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token, err := oidcauthtest.SignJWT(privKey, claims, privateClaims)
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require.NoError(t, err)
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return token
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}
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func signJWTWithStandardClaims(t *testing.T, privKey string, claims interface{}) string {
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t.Helper()
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return signJWT(t, privKey, testJWTStandardClaims(), claims)
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}
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// TestAutoConfigInitialConfiguration is really an integration test of all the moving parts of the AutoConfig.InitialConfiguration RPC.
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// Full testing of the individual parts will not be done in this test:
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//
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// * Any implementations of the AutoConfigAuthorizer interface (although these test do use the jwtAuthorizer)
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// * Each of the individual config generation functions. These can be unit tested separately and should NOT
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// require running test servers
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func TestAutoConfigInitialConfiguration(t *testing.T) {
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type testCase struct {
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request agentpb.AutoConfigRequest
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expected agentpb.AutoConfigResponse
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patchResponse func(t *testing.T, srv *Server, resp *agentpb.AutoConfigResponse)
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err string
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}
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gossipKey := make([]byte, 32)
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// this is not cryptographic randomness and is not secure but for the sake of this test its all we need.
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n, err := rand.Read(gossipKey)
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require.NoError(t, err)
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require.Equal(t, 32, n)
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gossipKeyEncoded := base64.StdEncoding.EncodeToString(gossipKey)
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// generate a test certificate for the server serving out the insecure RPC
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cert, key, cacert, err := testTLSCertificates("server.dc1.consul")
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require.NoError(t, err)
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// generate a JWT signer
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pub, priv, err := oidcauthtest.GenerateKey()
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require.NoError(t, err)
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_, altpriv, err := oidcauthtest.GenerateKey()
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require.NoError(t, err)
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cases := map[string]testCase{
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"wrong-datacenter": {
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request: agentpb.AutoConfigRequest{
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Datacenter: "no-such-dc",
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},
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err: `invalid datacenter "no-such-dc" - agent auto configuration cannot target a remote datacenter`,
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},
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"unverifiable": {
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request: agentpb.AutoConfigRequest{
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Node: "test-node",
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// this is signed using an incorrect private key
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JWT: signJWTWithStandardClaims(t, altpriv, map[string]interface{}{"consul_node_name": "test-node"}),
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},
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err: "Permission denied: Failed JWT authorization: no known key successfully validated the token signature",
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},
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"claim-assertion-failed": {
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request: agentpb.AutoConfigRequest{
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Node: "test-node",
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JWT: signJWTWithStandardClaims(t, priv, map[string]interface{}{"wrong_claim": "test-node"}),
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},
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err: "Permission denied: Failed JWT claim assertion",
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},
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"good": {
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request: agentpb.AutoConfigRequest{
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Node: "test-node",
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JWT: signJWTWithStandardClaims(t, priv, map[string]interface{}{"consul_node_name": "test-node"}),
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},
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expected: agentpb.AutoConfigResponse{
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Config: &config.Config{
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Datacenter: "dc1",
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PrimaryDatacenter: "dc1",
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NodeName: "test-node",
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AutoEncrypt: &config.AutoEncrypt{
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TLS: true,
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},
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ACL: &config.ACL{
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Enabled: true,
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PolicyTTL: "30s",
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TokenTTL: "30s",
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RoleTTL: "30s",
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DisabledTTL: "0s",
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DownPolicy: "extend-cache",
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DefaultPolicy: "deny",
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Tokens: &config.ACLTokens{
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Agent: "patched-secret",
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},
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},
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Gossip: &config.Gossip{
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Encryption: &config.GossipEncryption{
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Key: gossipKeyEncoded,
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VerifyIncoming: true,
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VerifyOutgoing: true,
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},
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},
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TLS: &config.TLS{
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VerifyOutgoing: true,
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VerifyServerHostname: true,
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MinVersion: "tls12",
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PreferServerCipherSuites: true,
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},
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},
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},
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patchResponse: func(t *testing.T, srv *Server, resp *agentpb.AutoConfigResponse) {
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// we are expecting an ACL token but cannot check anything for equality
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// so here we check that it was set and overwrite it
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require.NotNil(t, resp.Config)
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require.NotNil(t, resp.Config.ACL)
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require.NotNil(t, resp.Config.ACL.Tokens)
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require.NotEmpty(t, resp.Config.ACL.Tokens.Agent)
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resp.Config.ACL.Tokens.Agent = "patched-secret"
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// we don't know the expected join address until we start up the test server
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joinAddr := &net.TCPAddr{IP: net.IPv4(127, 0, 0, 1), Port: srv.config.SerfLANConfig.MemberlistConfig.AdvertisePort}
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require.NotNil(t, resp.Config.Gossip)
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require.Equal(t, []string{joinAddr.String()}, resp.Config.Gossip.RetryJoinLAN)
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resp.Config.Gossip.RetryJoinLAN = nil
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},
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},
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}
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_, s, _ := testACLServerWithConfig(t, func(c *Config) {
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c.Domain = "consul"
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c.AutoConfigAuthzEnabled = true
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c.AutoConfigAuthzAuthMethod = structs.ACLAuthMethod{
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Name: "Auth Config Authorizer",
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Type: "jwt",
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EnterpriseMeta: *structs.DefaultEnterpriseMeta(),
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Config: map[string]interface{}{
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"BoundAudiences": []string{"consul"},
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"BoundIssuer": "consul",
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"JWTValidationPubKeys": []string{pub},
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"ClaimMappings": map[string]string{
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"consul_node_name": "node",
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},
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},
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}
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c.AutoConfigAuthzClaimAssertions = []string{
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`value.node == "${node}"`,
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}
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c.AutoConfigAuthzAllowReuse = true
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cafile := path.Join(c.DataDir, "cacert.pem")
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err := ioutil.WriteFile(cafile, []byte(cacert), 0600)
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require.NoError(t, err)
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certfile := path.Join(c.DataDir, "cert.pem")
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err = ioutil.WriteFile(certfile, []byte(cert), 0600)
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require.NoError(t, err)
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keyfile := path.Join(c.DataDir, "key.pem")
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err = ioutil.WriteFile(keyfile, []byte(key), 0600)
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require.NoError(t, err)
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c.CAFile = cafile
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c.CertFile = certfile
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c.KeyFile = keyfile
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c.VerifyOutgoing = true
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c.VerifyIncoming = true
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c.VerifyServerHostname = true
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c.TLSMinVersion = "tls12"
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c.TLSPreferServerCipherSuites = true
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c.ConnectEnabled = true
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c.AutoEncryptAllowTLS = true
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c.SerfLANConfig.MemberlistConfig.GossipVerifyIncoming = true
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c.SerfLANConfig.MemberlistConfig.GossipVerifyOutgoing = true
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keyring, err := memberlist.NewKeyring(nil, gossipKey)
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require.NoError(t, err)
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c.SerfLANConfig.MemberlistConfig.Keyring = keyring
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}, false)
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conf := tlsutil.Config{
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CAFile: s.config.CAFile,
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VerifyServerHostname: s.config.VerifyServerHostname,
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VerifyOutgoing: s.config.VerifyOutgoing,
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Domain: s.config.Domain,
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}
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codec, err := insecureRPCClient(s, conf)
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require.NoError(t, err)
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waitForLeaderEstablishment(t, s)
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for testName, tcase := range cases {
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t.Run(testName, func(t *testing.T) {
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var reply agentpb.AutoConfigResponse
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err := msgpackrpc.CallWithCodec(codec, "AutoConfig.InitialConfiguration", &tcase.request, &reply)
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if tcase.err != "" {
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testutil.RequireErrorContains(t, err, tcase.err)
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} else {
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require.NoError(t, err)
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if tcase.patchResponse != nil {
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tcase.patchResponse(t, s, &reply)
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}
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require.Equal(t, tcase.expected, reply)
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}
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})
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}
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}
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func TestAutoConfig_baseConfig(t *testing.T) {
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type testCase struct {
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serverConfig Config
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opts AutoConfigOptions
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expected config.Config
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err string
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}
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cases := map[string]testCase{
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"ok": {
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serverConfig: Config{
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Datacenter: "oSWzfhnU",
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PrimaryDatacenter: "53XO9mx4",
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},
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opts: AutoConfigOptions{
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NodeName: "lBdc0lsH",
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SegmentName: "HZiwlWpi",
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},
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expected: config.Config{
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Datacenter: "oSWzfhnU",
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PrimaryDatacenter: "53XO9mx4",
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NodeName: "lBdc0lsH",
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SegmentName: "HZiwlWpi",
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},
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},
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"no-node-name": {
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serverConfig: Config{
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Datacenter: "oSWzfhnU",
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PrimaryDatacenter: "53XO9mx4",
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},
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err: "Cannot generate auto config response without a node name",
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},
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}
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for name, tcase := range cases {
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t.Run(name, func(t *testing.T) {
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ac := AutoConfig{
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config: &tcase.serverConfig,
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}
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var actual config.Config
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err := ac.baseConfig(tcase.opts, &actual)
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if tcase.err == "" {
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require.NoError(t, err)
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require.Equal(t, tcase.expected, actual)
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} else {
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testutil.RequireErrorContains(t, err, tcase.err)
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}
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})
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}
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}
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func TestAutoConfig_updateTLSSettingsInConfig(t *testing.T) {
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_, _, cacert, err := testTLSCertificates("server.dc1.consul")
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require.NoError(t, err)
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dir := testutil.TempDir(t, "auto-config-tls-settings")
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t.Cleanup(func() { os.RemoveAll(dir) })
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cafile := path.Join(dir, "cacert.pem")
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err = ioutil.WriteFile(cafile, []byte(cacert), 0600)
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require.NoError(t, err)
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parseCiphers := func(t *testing.T, cipherStr string) []uint16 {
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t.Helper()
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ciphers, err := tlsutil.ParseCiphers(cipherStr)
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require.NoError(t, err)
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return ciphers
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}
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type testCase struct {
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tlsConfig tlsutil.Config
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expected config.Config
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}
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cases := map[string]testCase{
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"secure": {
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tlsConfig: tlsutil.Config{
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VerifyOutgoing: true,
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VerifyServerHostname: true,
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TLSMinVersion: "tls12",
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PreferServerCipherSuites: true,
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CAFile: cafile,
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CipherSuites: parseCiphers(t, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384"),
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},
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expected: config.Config{
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TLS: &config.TLS{
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VerifyOutgoing: true,
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VerifyServerHostname: true,
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MinVersion: "tls12",
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PreferServerCipherSuites: true,
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CipherSuites: "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
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},
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},
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},
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"less-secure": {
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tlsConfig: tlsutil.Config{
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VerifyOutgoing: true,
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VerifyServerHostname: false,
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TLSMinVersion: "tls10",
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PreferServerCipherSuites: false,
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CAFile: cafile,
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CipherSuites: parseCiphers(t, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384"),
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},
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expected: config.Config{
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TLS: &config.TLS{
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VerifyOutgoing: true,
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VerifyServerHostname: false,
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MinVersion: "tls10",
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PreferServerCipherSuites: false,
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CipherSuites: "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
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},
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},
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},
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}
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for name, tcase := range cases {
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t.Run(name, func(t *testing.T) {
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logger := testutil.Logger(t)
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configurator, err := tlsutil.NewConfigurator(tcase.tlsConfig, logger)
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require.NoError(t, err)
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ac := &AutoConfig{
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tlsConfigurator: configurator,
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}
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var actual config.Config
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err = ac.updateTLSSettingsInConfig(AutoConfigOptions{}, &actual)
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require.NoError(t, err)
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require.Equal(t, tcase.expected, actual)
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})
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}
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}
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func TestAutoConfig_updateGossipEncryptionInConfig(t *testing.T) {
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type testCase struct {
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conf memberlist.Config
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expected config.Config
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}
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gossipKey := make([]byte, 32)
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// this is not cryptographic randomness and is not secure but for the sake of this test its all we need.
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n, err := rand.Read(gossipKey)
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require.NoError(t, err)
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require.Equal(t, 32, n)
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gossipKeyEncoded := base64.StdEncoding.EncodeToString(gossipKey)
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keyring, err := memberlist.NewKeyring(nil, gossipKey)
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require.NoError(t, err)
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cases := map[string]testCase{
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"encryption-required": {
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conf: memberlist.Config{
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Keyring: keyring,
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GossipVerifyIncoming: true,
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GossipVerifyOutgoing: true,
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},
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expected: config.Config{
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Gossip: &config.Gossip{
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Encryption: &config.GossipEncryption{
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Key: gossipKeyEncoded,
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VerifyIncoming: true,
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VerifyOutgoing: true,
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},
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},
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},
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},
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"encryption-allowed": {
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conf: memberlist.Config{
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Keyring: keyring,
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GossipVerifyIncoming: false,
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GossipVerifyOutgoing: false,
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},
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expected: config.Config{
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Gossip: &config.Gossip{
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Encryption: &config.GossipEncryption{
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Key: gossipKeyEncoded,
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VerifyIncoming: false,
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VerifyOutgoing: false,
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},
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},
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},
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},
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"encryption-disabled": {
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// zero values all around - if no keyring is configured then the gossip
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// encryption settings should not be set.
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},
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}
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for name, tcase := range cases {
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t.Run(name, func(t *testing.T) {
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cfg := DefaultConfig()
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cfg.SerfLANConfig.MemberlistConfig = &tcase.conf
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ac := AutoConfig{
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config: cfg,
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}
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var actual config.Config
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err := ac.updateGossipEncryptionInConfig(AutoConfigOptions{}, &actual)
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require.NoError(t, err)
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require.Equal(t, tcase.expected, actual)
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})
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}
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}
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func TestAutoConfig_updateTLSCertificatesInConfig(t *testing.T) {
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type testCase struct {
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serverConfig Config
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expected config.Config
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}
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cases := map[string]testCase{
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"auto_encrypt-enabled": {
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serverConfig: Config{
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ConnectEnabled: true,
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AutoEncryptAllowTLS: true,
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},
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expected: config.Config{
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AutoEncrypt: &config.AutoEncrypt{TLS: true},
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},
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},
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"auto_encrypt-disabled": {
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serverConfig: Config{
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ConnectEnabled: true,
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AutoEncryptAllowTLS: false,
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|
},
|
|
expected: config.Config{
|
|
AutoEncrypt: &config.AutoEncrypt{TLS: false},
|
|
},
|
|
},
|
|
}
|
|
|
|
for name, tcase := range cases {
|
|
t.Run(name, func(t *testing.T) {
|
|
ac := AutoConfig{
|
|
config: &tcase.serverConfig,
|
|
}
|
|
|
|
var actual config.Config
|
|
err := ac.updateTLSCertificatesInConfig(AutoConfigOptions{}, &actual)
|
|
require.NoError(t, err)
|
|
require.Equal(t, tcase.expected, actual)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAutoConfig_updateACLsInConfig(t *testing.T) {
|
|
type testCase struct {
|
|
config Config
|
|
expected config.Config
|
|
expectACLToken bool
|
|
err error
|
|
}
|
|
|
|
const (
|
|
tokenAccessor = "b98761aa-c0ee-445b-9b0c-f54b56b47778"
|
|
tokenSecret = "1c96448a-ab04-4caa-982a-e8b095a111e2"
|
|
)
|
|
|
|
testDC := "dc1"
|
|
|
|
cases := map[string]testCase{
|
|
"enabled": {
|
|
config: Config{
|
|
Datacenter: testDC,
|
|
PrimaryDatacenter: testDC,
|
|
ACLsEnabled: true,
|
|
ACLPolicyTTL: 7 * time.Second,
|
|
ACLRoleTTL: 10 * time.Second,
|
|
ACLTokenTTL: 12 * time.Second,
|
|
ACLDisabledTTL: 31 * time.Second,
|
|
ACLDefaultPolicy: "allow",
|
|
ACLDownPolicy: "deny",
|
|
ACLEnableKeyListPolicy: true,
|
|
},
|
|
expectACLToken: true,
|
|
expected: config.Config{
|
|
ACL: &config.ACL{
|
|
Enabled: true,
|
|
PolicyTTL: "7s",
|
|
RoleTTL: "10s",
|
|
TokenTTL: "12s",
|
|
DisabledTTL: "31s",
|
|
DownPolicy: "deny",
|
|
DefaultPolicy: "allow",
|
|
EnableKeyListPolicy: true,
|
|
Tokens: &config.ACLTokens{
|
|
Agent: tokenSecret,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
"disabled": {
|
|
config: Config{
|
|
Datacenter: testDC,
|
|
PrimaryDatacenter: testDC,
|
|
ACLsEnabled: false,
|
|
ACLPolicyTTL: 7 * time.Second,
|
|
ACLRoleTTL: 10 * time.Second,
|
|
ACLTokenTTL: 12 * time.Second,
|
|
ACLDisabledTTL: 31 * time.Second,
|
|
ACLDefaultPolicy: "allow",
|
|
ACLDownPolicy: "deny",
|
|
ACLEnableKeyListPolicy: true,
|
|
},
|
|
expectACLToken: false,
|
|
expected: config.Config{
|
|
ACL: &config.ACL{
|
|
Enabled: false,
|
|
PolicyTTL: "7s",
|
|
RoleTTL: "10s",
|
|
TokenTTL: "12s",
|
|
DisabledTTL: "31s",
|
|
DownPolicy: "deny",
|
|
DefaultPolicy: "allow",
|
|
EnableKeyListPolicy: true,
|
|
},
|
|
},
|
|
},
|
|
"local-tokens-disabled": {
|
|
config: Config{
|
|
Datacenter: testDC,
|
|
PrimaryDatacenter: "somewhere-else",
|
|
ACLsEnabled: true,
|
|
},
|
|
expectACLToken: true,
|
|
err: fmt.Errorf("Agent Auto Configuration requires local token usage to be enabled in this datacenter"),
|
|
},
|
|
}
|
|
for name, tcase := range cases {
|
|
t.Run(name, func(t *testing.T) {
|
|
backend := &mockAutoConfigBackend{}
|
|
expectedTemplate := &structs.ACLToken{
|
|
Description: `Auto Config Token for Node "something"`,
|
|
Local: true,
|
|
NodeIdentities: []*structs.ACLNodeIdentity{
|
|
{
|
|
NodeName: "something",
|
|
Datacenter: testDC,
|
|
},
|
|
},
|
|
EnterpriseMeta: *structs.DefaultEnterpriseMeta(),
|
|
}
|
|
|
|
testToken := &structs.ACLToken{
|
|
AccessorID: tokenAccessor,
|
|
SecretID: tokenSecret,
|
|
Description: `Auto Config Token for Node "something"`,
|
|
Local: true,
|
|
NodeIdentities: []*structs.ACLNodeIdentity{
|
|
{
|
|
NodeName: "something",
|
|
Datacenter: testDC,
|
|
},
|
|
},
|
|
EnterpriseMeta: *structs.DefaultEnterpriseMeta(),
|
|
}
|
|
|
|
if tcase.expectACLToken {
|
|
backend.On("CreateACLToken", expectedTemplate).Return(testToken, tcase.err).Once()
|
|
}
|
|
|
|
ac := AutoConfig{config: &tcase.config, backend: backend}
|
|
|
|
var actual config.Config
|
|
err := ac.updateACLsInConfig(AutoConfigOptions{NodeName: "something"}, &actual)
|
|
if tcase.err != nil {
|
|
testutil.RequireErrorContains(t, err, tcase.err.Error())
|
|
} else {
|
|
require.NoError(t, err)
|
|
require.Equal(t, tcase.expected, actual)
|
|
}
|
|
|
|
backend.AssertExpectations(t)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestAutoConfig_updateJoinAddressesInConfig(t *testing.T) {
|
|
addrs := []string{"198.18.0.7:8300", "198.18.0.1:8300"}
|
|
backend := &mockAutoConfigBackend{}
|
|
backend.On("DatacenterJoinAddresses", "").Return(addrs, nil).Once()
|
|
|
|
ac := AutoConfig{backend: backend}
|
|
|
|
var actual config.Config
|
|
err := ac.updateJoinAddressesInConfig(AutoConfigOptions{}, &actual)
|
|
require.NoError(t, err)
|
|
|
|
require.NotNil(t, actual.Gossip)
|
|
require.ElementsMatch(t, addrs, actual.Gossip.RetryJoinLAN)
|
|
|
|
backend.AssertExpectations(t)
|
|
}
|