open-consul/agent/acl_test.go
2017-10-23 08:03:18 +02:00

866 lines
21 KiB
Go

package agent
import (
"fmt"
"os"
"strings"
"testing"
"time"
rawacl "github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/config"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/consul/types"
"github.com/hashicorp/serf/serf"
)
func TestACL_Bad_Config(t *testing.T) {
t.Parallel()
dataDir := testutil.TempDir(t, "agent")
defer os.Remove(dataDir)
cfg := TestConfig(config.Source{
Name: "acl",
Format: "hcl",
Data: `
acl_down_policy = "nope"
data_dir = "` + dataDir + `"
`,
})
// do not use TestAgent here since we want
// the agent to fail during startup.
_, err := New(cfg)
if err == nil || !strings.Contains(err.Error(), "invalid ACL down policy") {
t.Fatalf("err: %v", err)
}
}
type MockServer struct {
getPolicyFn func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error
}
func (m *MockServer) GetPolicy(args *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
if m.getPolicyFn != nil {
return m.getPolicyFn(args, reply)
}
return fmt.Errorf("should not have called GetPolicy")
}
func TestACL_Version8(t *testing.T) {
t.Parallel()
t.Run("version 8 disabled", func(t *testing.T) {
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = false
`)
defer a.Shutdown()
m := MockServer{
getPolicyFn: func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
t.Fatalf("should not have called to server")
return nil
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
if token, err := a.resolveToken("nope"); token != nil || err != nil {
t.Fatalf("bad: %v err: %v", token, err)
}
})
t.Run("version 8 enabled", func(t *testing.T) {
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
var called bool
m := MockServer{
getPolicyFn: func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
called = true
return fmt.Errorf("token not found")
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
if _, err := a.resolveToken("nope"); err != nil {
t.Fatalf("err: %v", err)
}
if !called {
t.Fatalf("bad")
}
})
}
func TestACL_Disabled(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_disabled_ttl = "10ms"
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{
// Fetch a token without ACLs enabled and make sure the manager sees it.
getPolicyFn: func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
return rawacl.ErrDisabled
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
if a.acls.isDisabled() {
t.Fatalf("should not be disabled yet")
}
if token, err := a.resolveToken("nope"); token != nil || err != nil {
t.Fatalf("bad: %v err: %v", token, err)
}
if !a.acls.isDisabled() {
t.Fatalf("should be disabled")
}
// Now turn on ACLs and check right away, it should still think ACLs are
// disabled since we don't check again right away.
m.getPolicyFn = func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
return rawacl.ErrNotFound
}
if token, err := a.resolveToken("nope"); token != nil || err != nil {
t.Fatalf("bad: %v err: %v", token, err)
}
if !a.acls.isDisabled() {
t.Fatalf("should be disabled")
}
// Wait the waiting period and make sure it checks again. Do a few tries
// to make sure we don't think it's disabled.
time.Sleep(2 * 10 * time.Millisecond)
for i := 0; i < 10; i++ {
_, err := a.resolveToken("nope")
if !rawacl.IsErrNotFound(err) {
t.Fatalf("err: %v", err)
}
if a.acls.isDisabled() {
t.Fatalf("should not be disabled")
}
}
}
func TestACL_Special_IDs(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
acl_agent_master_token = "towel"
`)
defer a.Shutdown()
m := MockServer{
// An empty ID should get mapped to the anonymous token.
getPolicyFn: func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
if req.ACL != "anonymous" {
t.Fatalf("bad: %#v", *req)
}
return rawacl.ErrNotFound
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
_, err := a.resolveToken("")
if !rawacl.IsErrNotFound(err) {
t.Fatalf("err: %v", err)
}
// A root ACL request should get rejected and not call the server.
m.getPolicyFn = func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
t.Fatalf("should not have called to server")
return nil
}
_, err = a.resolveToken("deny")
if !rawacl.IsErrRootDenied(err) {
t.Fatalf("err: %v", err)
}
// The ACL master token should also not call the server, but should give
// us a working agent token.
acl, err := a.resolveToken("towel")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if !acl.AgentRead(a.config.NodeName) {
t.Fatalf("should be able to read agent")
}
if !acl.AgentWrite(a.config.NodeName) {
t.Fatalf("should be able to write agent")
}
if !acl.NodeRead("hello") {
t.Fatalf("should be able to read any node")
}
if acl.NodeWrite("hello", nil) {
t.Fatalf("should not be able to write any node")
}
}
func TestACL_Down_Deny(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_down_policy = "deny"
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{
// Resolve with ACLs down.
getPolicyFn: func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
return fmt.Errorf("ACLs are broken")
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
acl, err := a.resolveToken("nope")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if acl.AgentRead(a.config.NodeName) {
t.Fatalf("should deny")
}
}
func TestACL_Down_Allow(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_down_policy = "allow"
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{
// Resolve with ACLs down.
getPolicyFn: func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
return fmt.Errorf("ACLs are broken")
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
acl, err := a.resolveToken("nope")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if !acl.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
}
func TestACL_Down_Extend(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_down_policy = "extend-cache"
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{
// Populate the cache for one of the tokens.
getPolicyFn: func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
*reply = structs.ACLPolicy{
Parent: "allow",
Policy: &rawacl.Policy{
Agents: []*rawacl.AgentPolicy{
&rawacl.AgentPolicy{
Node: a.config.NodeName,
Policy: "read",
},
},
},
}
return nil
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
acl, err := a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if !acl.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if acl.AgentWrite(a.config.NodeName) {
t.Fatalf("should deny")
}
// Now take down ACLs and make sure a new token fails to resolve.
m.getPolicyFn = func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
return fmt.Errorf("ACLs are broken")
}
acl, err = a.resolveToken("nope")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if acl.AgentRead(a.config.NodeName) {
t.Fatalf("should deny")
}
if acl.AgentWrite(a.config.NodeName) {
t.Fatalf("should deny")
}
// Read the token from the cache while ACLs are broken, which should
// extend.
acl, err = a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if acl == nil {
t.Fatalf("should not be nil")
}
if !acl.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if acl.AgentWrite(a.config.NodeName) {
t.Fatalf("should deny")
}
}
func TestACL_Cache(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{
// Populate the cache for one of the tokens.
getPolicyFn: func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
*reply = structs.ACLPolicy{
ETag: "hash1",
Parent: "deny",
Policy: &rawacl.Policy{
Agents: []*rawacl.AgentPolicy{
&rawacl.AgentPolicy{
Node: a.config.NodeName,
Policy: "read",
},
},
},
TTL: 10 * time.Millisecond,
}
return nil
},
}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
rule, err := a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if rule == nil {
t.Fatalf("should not be nil")
}
if !rule.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if rule.AgentWrite(a.config.NodeName) {
t.Fatalf("should deny")
}
if rule.NodeRead("nope") {
t.Fatalf("should deny")
}
// Fetch right away and make sure it uses the cache.
m.getPolicyFn = func(*structs.ACLPolicyRequest, *structs.ACLPolicy) error {
t.Fatalf("should not have called to server")
return nil
}
rule, err = a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if rule == nil {
t.Fatalf("should not be nil")
}
if !rule.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if rule.AgentWrite(a.config.NodeName) {
t.Fatalf("should deny")
}
if rule.NodeRead("nope") {
t.Fatalf("should deny")
}
// Wait for the TTL to expire and try again. This time the token will be
// gone.
time.Sleep(20 * time.Millisecond)
m.getPolicyFn = func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
return rawacl.ErrNotFound
}
_, err = a.resolveToken("yep")
if !rawacl.IsErrNotFound(err) {
t.Fatalf("err: %v", err)
}
// Page it back in with a new tag and different policy
m.getPolicyFn = func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
*reply = structs.ACLPolicy{
ETag: "hash2",
Parent: "deny",
Policy: &rawacl.Policy{
Agents: []*rawacl.AgentPolicy{
&rawacl.AgentPolicy{
Node: a.config.NodeName,
Policy: "write",
},
},
},
TTL: 10 * time.Millisecond,
}
return nil
}
rule, err = a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if rule == nil {
t.Fatalf("should not be nil")
}
if !rule.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if !rule.AgentWrite(a.config.NodeName) {
t.Fatalf("should allow")
}
if rule.NodeRead("nope") {
t.Fatalf("should deny")
}
// Wait for the TTL to expire and try again. This will match the tag
// and not send the policy back, but we should have the old token
// behavior.
time.Sleep(20 * time.Millisecond)
var didRefresh bool
m.getPolicyFn = func(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
*reply = structs.ACLPolicy{
ETag: "hash2",
TTL: 10 * time.Millisecond,
}
didRefresh = true
return nil
}
rule, err = a.resolveToken("yep")
if err != nil {
t.Fatalf("err: %v", err)
}
if rule == nil {
t.Fatalf("should not be nil")
}
if !rule.AgentRead(a.config.NodeName) {
t.Fatalf("should allow")
}
if !rule.AgentWrite(a.config.NodeName) {
t.Fatalf("should allow")
}
if rule.NodeRead("nope") {
t.Fatalf("should deny")
}
if !didRefresh {
t.Fatalf("should refresh")
}
}
// catalogPolicy supplies some standard policies to help with testing the
// catalog-related vet and filter functions.
func catalogPolicy(req *structs.ACLPolicyRequest, reply *structs.ACLPolicy) error {
reply.Policy = &rawacl.Policy{}
switch req.ACL {
case "node-ro":
reply.Policy.Nodes = append(reply.Policy.Nodes,
&rawacl.NodePolicy{Name: "Node", Policy: "read"})
case "node-rw":
reply.Policy.Nodes = append(reply.Policy.Nodes,
&rawacl.NodePolicy{Name: "Node", Policy: "write"})
case "service-ro":
reply.Policy.Services = append(reply.Policy.Services,
&rawacl.ServicePolicy{Name: "service", Policy: "read"})
case "service-rw":
reply.Policy.Services = append(reply.Policy.Services,
&rawacl.ServicePolicy{Name: "service", Policy: "write"})
case "other-rw":
reply.Policy.Services = append(reply.Policy.Services,
&rawacl.ServicePolicy{Name: "other", Policy: "write"})
default:
return fmt.Errorf("unknown token %q", req.ACL)
}
return nil
}
func TestACL_vetServiceRegister(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
// Register a new service, with permission.
err := a.vetServiceRegister("service-rw", &structs.NodeService{
ID: "my-service",
Service: "service",
})
if err != nil {
t.Fatalf("err: %v", err)
}
// Register a new service without write privs.
err = a.vetServiceRegister("service-ro", &structs.NodeService{
ID: "my-service",
Service: "service",
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
// Try to register over a service without write privs to the existing
// service.
a.State.AddService(&structs.NodeService{
ID: "my-service",
Service: "other",
}, "")
err = a.vetServiceRegister("service-rw", &structs.NodeService{
ID: "my-service",
Service: "service",
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
func TestACL_vetServiceUpdate(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
// Update a service that doesn't exist.
err := a.vetServiceUpdate("service-rw", "my-service")
if err == nil || !strings.Contains(err.Error(), "Unknown service") {
t.Fatalf("err: %v", err)
}
// Update with write privs.
a.State.AddService(&structs.NodeService{
ID: "my-service",
Service: "service",
}, "")
err = a.vetServiceUpdate("service-rw", "my-service")
if err != nil {
t.Fatalf("err: %v", err)
}
// Update without write privs.
err = a.vetServiceUpdate("service-ro", "my-service")
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
func TestACL_vetCheckRegister(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
// Register a new service check with write privs.
err := a.vetCheckRegister("service-rw", &structs.HealthCheck{
CheckID: types.CheckID("my-check"),
ServiceID: "my-service",
ServiceName: "service",
})
if err != nil {
t.Fatalf("err: %v", err)
}
// Register a new service check without write privs.
err = a.vetCheckRegister("service-ro", &structs.HealthCheck{
CheckID: types.CheckID("my-check"),
ServiceID: "my-service",
ServiceName: "service",
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
// Register a new node check with write privs.
err = a.vetCheckRegister("node-rw", &structs.HealthCheck{
CheckID: types.CheckID("my-check"),
})
if err != nil {
t.Fatalf("err: %v", err)
}
// Register a new node check without write privs.
err = a.vetCheckRegister("node-ro", &structs.HealthCheck{
CheckID: types.CheckID("my-check"),
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
// Try to register over a service check without write privs to the
// existing service.
a.State.AddService(&structs.NodeService{
ID: "my-service",
Service: "service",
}, "")
a.State.AddCheck(&structs.HealthCheck{
CheckID: types.CheckID("my-check"),
ServiceID: "my-service",
ServiceName: "other",
}, "")
err = a.vetCheckRegister("service-rw", &structs.HealthCheck{
CheckID: types.CheckID("my-check"),
ServiceID: "my-service",
ServiceName: "service",
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
// Try to register over a node check without write privs to the node.
a.State.AddCheck(&structs.HealthCheck{
CheckID: types.CheckID("my-node-check"),
}, "")
err = a.vetCheckRegister("service-rw", &structs.HealthCheck{
CheckID: types.CheckID("my-node-check"),
ServiceID: "my-service",
ServiceName: "service",
})
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
func TestACL_vetCheckUpdate(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
// Update a check that doesn't exist.
err := a.vetCheckUpdate("node-rw", "my-check")
if err == nil || !strings.Contains(err.Error(), "Unknown check") {
t.Fatalf("err: %v", err)
}
// Update service check with write privs.
a.State.AddService(&structs.NodeService{
ID: "my-service",
Service: "service",
}, "")
a.State.AddCheck(&structs.HealthCheck{
CheckID: types.CheckID("my-service-check"),
ServiceID: "my-service",
ServiceName: "service",
}, "")
err = a.vetCheckUpdate("service-rw", "my-service-check")
if err != nil {
t.Fatalf("err: %v", err)
}
// Update service check without write privs.
err = a.vetCheckUpdate("service-ro", "my-service-check")
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
// Update node check with write privs.
a.State.AddCheck(&structs.HealthCheck{
CheckID: types.CheckID("my-node-check"),
}, "")
err = a.vetCheckUpdate("node-rw", "my-node-check")
if err != nil {
t.Fatalf("err: %v", err)
}
// Update without write privs.
err = a.vetCheckUpdate("node-ro", "my-node-check")
if !rawacl.IsErrPermissionDenied(err) {
t.Fatalf("err: %v", err)
}
}
func TestACL_filterMembers(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
var members []serf.Member
if err := a.filterMembers("node-ro", &members); err != nil {
t.Fatalf("err: %v", err)
}
if len(members) != 0 {
t.Fatalf("bad: %#v", members)
}
members = []serf.Member{
serf.Member{Name: "Node 1"},
serf.Member{Name: "Nope"},
serf.Member{Name: "Node 2"},
}
if err := a.filterMembers("node-ro", &members); err != nil {
t.Fatalf("err: %v", err)
}
if len(members) != 2 ||
members[0].Name != "Node 1" ||
members[1].Name != "Node 2" {
t.Fatalf("bad: %#v", members)
}
}
func TestACL_filterServices(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
services := make(map[string]*structs.NodeService)
if err := a.filterServices("node-ro", &services); err != nil {
t.Fatalf("err: %v", err)
}
services["my-service"] = &structs.NodeService{ID: "my-service", Service: "service"}
services["my-other"] = &structs.NodeService{ID: "my-other", Service: "other"}
if err := a.filterServices("service-ro", &services); err != nil {
t.Fatalf("err: %v", err)
}
if _, ok := services["my-service"]; !ok {
t.Fatalf("bad: %#v", services)
}
if _, ok := services["my-other"]; ok {
t.Fatalf("bad: %#v", services)
}
}
func TestACL_filterChecks(t *testing.T) {
t.Parallel()
a := NewTestAgent(t.Name(), TestACLConfig()+`
acl_enforce_version_8 = true
`)
defer a.Shutdown()
m := MockServer{catalogPolicy}
if err := a.registerEndpoint("ACL", &m); err != nil {
t.Fatalf("err: %v", err)
}
checks := make(map[types.CheckID]*structs.HealthCheck)
if err := a.filterChecks("node-ro", &checks); err != nil {
t.Fatalf("err: %v", err)
}
checks["my-node"] = &structs.HealthCheck{}
checks["my-service"] = &structs.HealthCheck{ServiceName: "service"}
checks["my-other"] = &structs.HealthCheck{ServiceName: "other"}
if err := a.filterChecks("service-ro", &checks); err != nil {
t.Fatalf("err: %v", err)
}
if _, ok := checks["my-node"]; ok {
t.Fatalf("bad: %#v", checks)
}
if _, ok := checks["my-service"]; !ok {
t.Fatalf("bad: %#v", checks)
}
if _, ok := checks["my-other"]; ok {
t.Fatalf("bad: %#v", checks)
}
checks["my-node"] = &structs.HealthCheck{}
checks["my-service"] = &structs.HealthCheck{ServiceName: "service"}
checks["my-other"] = &structs.HealthCheck{ServiceName: "other"}
if err := a.filterChecks("node-ro", &checks); err != nil {
t.Fatalf("err: %v", err)
}
if _, ok := checks["my-node"]; !ok {
t.Fatalf("bad: %#v", checks)
}
if _, ok := checks["my-service"]; ok {
t.Fatalf("bad: %#v", checks)
}
if _, ok := checks["my-other"]; ok {
t.Fatalf("bad: %#v", checks)
}
}