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Add negative tests 

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2022-11-19 12:41:12 +01:00 committed by Kristoffer Dalby
parent f610be632e
commit e28d308796
1 changed files with 313 additions and 62 deletions
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375
integration/ssh_test.go
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@ -2,27 +2,35 @@ package integration
import (
"fmt"
"strings"
"testing"
"time"
"github.com/juanfont/headscale"
"github.com/juanfont/headscale/integration/hsic"
"github.com/juanfont/headscale/integration/tsic"
"github.com/stretchr/testify/assert"
)
var retry = func(times int, sleepInterval time.Duration, doWork func() (string, error)) (string, error) {
var retry = func(times int, sleepInterval time.Duration,
doWork func() (string, string, error),
) (string, string, error) {
var result string
var stderr string
var err error
for attempts := 0; attempts < times; attempts++ {
var result string
result, err = doWork()
tempResult, tempStderr, err := doWork()
result += tempResult
stderr += tempStderr
if err == nil {
return result, nil
return result, stderr, nil
}
time.Sleep(sleepInterval)
}
return "", err
return result, stderr, err
}
func TestSSHOneNamespaceAllToAll(t *testing.T) {
@ -81,26 +89,16 @@ func TestSSHOneNamespaceAllToAll(t *testing.T) {
t.Errorf("failed to get FQDNs: %s", err)
}
success := 0
for _, client := range allClients {
for _, peer := range allClients {
if client.Hostname() == peer.Hostname() {
continue
}
if doSSH(t, client, peer) {
success++
}
assertSSHHostname(t, client, peer)
}
}
t.Logf(
"%d successful pings out of %d",
success,
(len(allClients)*len(allClients))-len(allClients),
)
err = scenario.Shutdown()
if err != nil {
t.Errorf("failed to tear down scenario: %s", err)
@ -169,14 +167,10 @@ func TestSSHMultipleNamespacesAllToAll(t *testing.T) {
t.Errorf("failed to get FQDNs: %s", err)
}
success := 0
testInterNamespaceSSH := func(sourceClients []TailscaleClient, targetClients []TailscaleClient) {
for _, client := range sourceClients {
for _, peer := range targetClients {
if doSSH(t, client, peer) {
success++
}
assertSSHHostname(t, client, peer)
}
}
}
@ -184,11 +178,71 @@ func TestSSHMultipleNamespacesAllToAll(t *testing.T) {
testInterNamespaceSSH(nsOneClients, nsTwoClients)
testInterNamespaceSSH(nsTwoClients, nsOneClients)
t.Logf(
"%d successful pings out of %d",
success,
((len(nsOneClients)*len(nsOneClients))-len(nsOneClients))*2,
err = scenario.Shutdown()
if err != nil {
t.Errorf("failed to tear down scenario: %s", err)
}
}
func TestSSHNoSSHConfigured(t *testing.T) {
IntegrationSkip(t)
scenario, err := NewScenario()
if err != nil {
t.Errorf("failed to create scenario: %s", err)
}
spec := map[string]int{
"namespace1": len(TailscaleVersions) - 5,
}
err = scenario.CreateHeadscaleEnv(spec,
[]tsic.Option{tsic.WithSSH()},
hsic.WithACLPolicy(
&headscale.ACLPolicy{
Groups: map[string][]string{
"group:integration-test": {"namespace1"},
},
ACLs: []headscale.ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
SSHs: []headscale.SSH{},
},
),
hsic.WithTestName("sshnoneconfigured"),
)
if err != nil {
t.Errorf("failed to create headscale environment: %s", err)
}
allClients, err := scenario.ListTailscaleClients()
if err != nil {
t.Errorf("failed to get clients: %s", err)
}
err = scenario.WaitForTailscaleSync()
if err != nil {
t.Errorf("failed wait for tailscale clients to be in sync: %s", err)
}
_, err = scenario.ListTailscaleClientsFQDNs()
if err != nil {
t.Errorf("failed to get FQDNs: %s", err)
}
for _, client := range allClients {
for _, peer := range allClients {
if client.Hostname() == peer.Hostname() {
continue
}
assertSSHPermissionDenied(t, client, peer)
}
}
err = scenario.Shutdown()
if err != nil {
@ -196,45 +250,242 @@ func TestSSHMultipleNamespacesAllToAll(t *testing.T) {
}
}
func doSSH(t *testing.T, client TailscaleClient, peer TailscaleClient) bool {
func TestSSHIsBlockedInACL(t *testing.T) {
IntegrationSkip(t)
scenario, err := NewScenario()
if err != nil {
t.Errorf("failed to create scenario: %s", err)
}
spec := map[string]int{
"namespace1": len(TailscaleVersions) - 5,
}
err = scenario.CreateHeadscaleEnv(spec,
[]tsic.Option{tsic.WithSSH()},
hsic.WithACLPolicy(
&headscale.ACLPolicy{
Groups: map[string][]string{
"group:integration-test": {"namespace1"},
},
ACLs: []headscale.ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:80"},
},
},
SSHs: []headscale.SSH{
{
Action: "accept",
Sources: []string{"group:integration-test"},
Destinations: []string{"group:integration-test"},
Users: []string{"ssh-it-user"},
},
},
},
),
hsic.WithTestName("sshisblockedinacl"),
)
if err != nil {
t.Errorf("failed to create headscale environment: %s", err)
}
allClients, err := scenario.ListTailscaleClients()
if err != nil {
t.Errorf("failed to get clients: %s", err)
}
err = scenario.WaitForTailscaleSync()
if err != nil {
t.Errorf("failed wait for tailscale clients to be in sync: %s", err)
}
_, err = scenario.ListTailscaleClientsFQDNs()
if err != nil {
t.Errorf("failed to get FQDNs: %s", err)
}
for _, client := range allClients {
for _, peer := range allClients {
if client.Hostname() == peer.Hostname() {
continue
}
assertSSHTimeout(t, client, peer)
}
}
err = scenario.Shutdown()
if err != nil {
t.Errorf("failed to tear down scenario: %s", err)
}
}
func TestSSNamespaceOnlyIsolation(t *testing.T) {
IntegrationSkip(t)
scenario, err := NewScenario()
if err != nil {
t.Errorf("failed to create scenario: %s", err)
}
spec := map[string]int{
"namespaceacl1": len(TailscaleVersions) - 5,
"namespaceacl2": len(TailscaleVersions) - 5,
}
err = scenario.CreateHeadscaleEnv(spec,
[]tsic.Option{tsic.WithSSH()},
hsic.WithACLPolicy(
&headscale.ACLPolicy{
Groups: map[string][]string{
"group:ssh1": {"namespaceacl1"},
"group:ssh2": {"namespaceacl2"},
},
ACLs: []headscale.ACL{
{
Action: "accept",
Sources: []string{"*"},
Destinations: []string{"*:*"},
},
},
SSHs: []headscale.SSH{
{
Action: "accept",
Sources: []string{"group:ssh1"},
Destinations: []string{"group:ssh1"},
Users: []string{"ssh-it-user"},
},
{
Action: "accept",
Sources: []string{"group:ssh2"},
Destinations: []string{"group:ssh2"},
Users: []string{"ssh-it-user"},
},
},
},
),
hsic.WithTestName("sshtwonamespaceaclblock"),
)
if err != nil {
t.Errorf("failed to create headscale environment: %s", err)
}
ssh1Clients, err := scenario.ListTailscaleClients("namespaceacl1")
if err != nil {
t.Errorf("failed to get clients: %s", err)
}
ssh2Clients, err := scenario.ListTailscaleClients("namespaceacl2")
if err != nil {
t.Errorf("failed to get clients: %s", err)
}
err = scenario.WaitForTailscaleSync()
if err != nil {
t.Errorf("failed wait for tailscale clients to be in sync: %s", err)
}
_, err = scenario.ListTailscaleClientsFQDNs()
if err != nil {
t.Errorf("failed to get FQDNs: %s", err)
}
// TODO(kradalby,evenh): ACLs do currently not cover reject
// cases properly, and currently will accept all incomming connections
// as long as a rule is present.
//
// for _, client := range ssh1Clients {
// for _, peer := range ssh2Clients {
// if client.Hostname() == peer.Hostname() {
// continue
// }
//
// assertSSHPermissionDenied(t, client, peer)
// }
// }
//
// for _, client := range ssh2Clients {
// for _, peer := range ssh1Clients {
// if client.Hostname() == peer.Hostname() {
// continue
// }
//
// assertSSHPermissionDenied(t, client, peer)
// }
// }
for _, client := range ssh1Clients {
for _, peer := range ssh1Clients {
if client.Hostname() == peer.Hostname() {
continue
}
assertSSHHostname(t, client, peer)
}
}
for _, client := range ssh2Clients {
for _, peer := range ssh2Clients {
if client.Hostname() == peer.Hostname() {
continue
}
assertSSHHostname(t, client, peer)
}
}
err = scenario.Shutdown()
if err != nil {
t.Errorf("failed to tear down scenario: %s", err)
}
}
func doSSH(t *testing.T, client TailscaleClient, peer TailscaleClient) (string, string, error) {
t.Helper()
clientFQDN, _ := client.FQDN()
peerFQDN, _ := peer.FQDN()
success := false
command := []string{
"ssh", "-o StrictHostKeyChecking=no", "-o ConnectTimeout=1",
fmt.Sprintf("%s@%s", "ssh-it-user", peerFQDN),
"'hostname'",
}
t.Run(
fmt.Sprintf("%s-%s", clientFQDN, peerFQDN),
func(t *testing.T) {
command := []string{
"ssh", "-o StrictHostKeyChecking=no", "-o ConnectTimeout=1",
fmt.Sprintf("%s@%s", "ssh-it-user", peerFQDN),
"'hostname'",
}
result, err := retry(10, 1*time.Second, func() (string, error) {
result, _, err := client.Execute(command)
return result, err
})
if err != nil {
t.Errorf("failed to execute command over SSH: %s", err)
}
if strings.Contains(peer.ID(), result) {
t.Logf(
"failed to get correct container ID from %s, expected: %s, got: %s",
peer.Hostname(),
peer.ID(),
result,
)
t.Fail()
} else {
success = true
}
},
)
return success
return retry(10, 1*time.Second, func() (string, string, error) {
return client.Execute(command)
})
}
func assertSSHHostname(t *testing.T, client TailscaleClient, peer TailscaleClient) {
t.Helper()
result, _, err := doSSH(t, client, peer)
assert.NoError(t, err)
assert.Contains(t, peer.ID(), result)
}
func assertSSHPermissionDenied(t *testing.T, client TailscaleClient, peer TailscaleClient) {
t.Helper()
result, stderr, err := doSSH(t, client, peer)
assert.Error(t, err)
assert.Empty(t, result)
assert.Contains(t, stderr, "Permission denied (tailscale)")
}
func assertSSHTimeout(t *testing.T, client TailscaleClient, peer TailscaleClient) {
t.Helper()
result, stderr, err := doSSH(t, client, peer)
assert.NoError(t, err)
assert.Empty(t, result)
assert.Contains(t, stderr, "Connection timed out")
}